HRM X-ternal Series User manual

12/14
TRADITIONAL
15/19
SYSTEM
Your Boiler Serial Number is:
to be found on the Burner Cover.
X-ternal
CONDENSING
HANDBOOK AND SERVICE LOG

Householder Information
IMPORTANT!
Your boiler must be commissioned in order to:
- Validate your warranty
- Ensure the boiler has been installed correctly and avoid premature failure
- Set the boiler to its optimum efficiency. Operating conditions for the boiler will vary from site to site, your
commissioning engineer has specialised equipment to check the oil pressure and analyse the exhaust gases for
temperature, smoke and carbon dioxide content.
Your installer will organise the commissioning of your boiler. Should you experience any difficulty locating an
engineer, our service department may be able to provide you with details of an engineer in your area.
“Benchmark” Installation, Commissioning and Service Record Log Book
Please ensure that your installer has completed all sections of the log book (found at the back of this manual).
The log book will be required in the event of any warranty work. Ensure that the service record is completed.
Warranty
Your HRM boiler is under warranty for 2 years from the date of installation.
Warranty Conditions
- The boiler must be installed and commissioned in accordance with our handbook
- The boiler must not be repaired, modified or tampered with by any person not authorised by HRM
Extended Warranty
The “Benchmark” and warranty registration document at the end of this manual should be completed as
appropriate by your installer / engineer. This is your record that the boiler has been correctly installed in accordance
with our recommendations. Return the warranty registration document to HRM in order to qualify for a further 3 year
warranty of the heat exchanger – a total of 5 years.
Extended Warranty Conditions
- The boiler must be serviced annually and maintained in accordance with this handbook. The
“Benchmark” service log is located at the back of this manual
- This warranty is in addition to your statutory and other legal rights
After Sales Service
- If your boiler fails during the warranty period contact your installer, who will be able to identify the
cause of the problem. If appropriate, your installer will contact us.
- Under no circumstances should “in warranty” work be undertaken without authorisation from the HRM
service department
- If you are unable to contact your installer please contact our service department. Quoting your boiler’s
serial number when phoning – this can be found on the cover of this manual.
3
Standard X-ternal & System X-
ternal
Handbook
Householder Information
IMPORTANT!
Your boiler must be commissioned in order to:
- Validate your warranty
- Ensure the boiler has been installed correctly and avoid premature failure
- Set the boiler to its optimum efficiency. Operating conditions for the boiler will vary from site to site, your
commissioning engineer has specialised equipment to check the oil pressure and analyse the exhaust gases for
temperature, smoke and carbon dioxide content.
Your installer will organise the commissioning of your boiler. Should you experience any difficulty locating an
engineer, our service department may be able to provide you with details of an engineer in your area.
“Benchmark” Installation, Commissioning and Service Record Log Book
Please ensure that your installer has completed all sections of the log book (found at the back of this manual).
The log book will be required in the event of any warranty work. Ensure that the service record is completed.
Warranty
Your HRM boiler is under warranty for 2 years from the date of installation.
Warranty Conditions
- The boiler must be installed and commissioned in accordance with our handbook
- The boiler must not be repaired, modified or tampered with by any person not authorised by HRM
Extended Warranty
The “Benchmark” and warranty registration document at the end of this manual should be completed as
appropriate by your installer / engineer. This is your record that the boiler has been correctly installed in accordance
with our recommendations. Return the warranty registration document to HRM in order to qualify for a further 3 year
warranty of the heat exchanger – a total of 5 years.
Extended Warranty Conditions
- The boiler must be serviced annually and maintained in accordance with this handbook. The
“Benchmark” service log is located at the back of this manual
- This warranty is in addition to your statutory and other legal rights
After Sales Service
- If your boiler fails during the warranty period contact your installer, who will be able to identify the
cause of the problem. If appropriate, your installer will contact us.
- Under no circumstances should “in warranty” work be undertaken without authorisation from the HRM
service department
- If you are unable to contact your installer please contact our service department. Quoting your boiler’s
serial number when phoning – this can be found on the cover of this manual.
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Handbook
1
Contents Page
DESCRIPTION PAGE
Householder Information
Warranty Registration Document End Of Manual
Warranty 3
Extended Warranty 3
After Sales Service 3
Boiler Controls: X-ternal 4
System X-ternal 4
Burner Lockout 5
Technical Specifications
Boiler Dimensions: X-ternal 15/19 6
X-ternal 12/14 7
System X-ternal 8
Technical Specifications 9
Burner Settings 10
Boiler Installation
Regulations 11
Boiler Sizing 11
Refurbishing An Old System 11
System Protection 11
Boiler Location 12
Wall Construction 12
Flue Terminal Guard Installation 13
Flue Terminating Positions 14
Fuel Supply System 15
Oil Supply 15
Installation Procedure
X-ternal
16-19
System X-ternal 20-25
Condensate Drain 26
Wiring Diagrams
X-ternal and System X-ternal 27
Boiler Maintenance
Baffle Removal 28
Contacts
Tel No: 01953 455400
Fax No: 01953 454483
Email: [email protected]k or [email protected]
1
Standard X-ternal & System X-ternal
Handbook

Householder Information
IMPORTANT!
Your boiler must be commissioned in order to:
- Validate your warranty
- Ensure the boiler has been installed correctly and avoid premature failure
- Set the boiler to its optimum efficiency. Operating conditions for the boiler will vary from site to site, your
commissioning engineer has specialised equipment to check the oil pressure and analyse the exhaust gases for
temperature, smoke and carbon dioxide content.
Your installer will organise the commissioning of your boiler. Should you experience any difficulty locating an
engineer, our service department may be able to provide you with details of an engineer in your area.
“Benchmark” Installation, Commissioning and Service Record Log Book
Please ensure that your installer has completed all sections of the log book (found at the back of this manual).
The log book will be required in the event of any warranty work. Ensure that the service record is completed.
Warranty
Your HRM boiler is under warranty for 2 years from the date of installation.
Warranty Conditions
- The boiler must be installed and commissioned in accordance with our handbook
- The boiler must not be repaired, modified or tampered with by any person not authorised by HRM
Extended Warranty
The “Benchmark” and warranty registration document at the end of this manual should be completed as
appropriate by your installer / engineer. This is your record that the boiler has been correctly installed in accordance
with our recommendations. Return the warranty registration document to HRM in order to qualify for a further 3 year
warranty of the heat exchanger – a total of 5 years.
Extended Warranty Conditions
- The boiler must be serviced annually and maintained in accordance with this handbook. The
“Benchmark” service log is located at the back of this manual
- This warranty is in addition to your statutory and other legal rights
After Sales Service
- If your boiler fails during the warranty period contact your installer, who will be able to identify the
cause of the problem. If appropriate, your installer will contact us.
- Under no circumstances should “in warranty” work be undertaken without authorisation from the HRM
service department
- If you are unable to contact your installer please contact our service department. Quoting your boiler’s
serial number when phoning – this can be found on the cover of this manual.
3
Standard X-ternal & System X-
ternal
Handbook
Householder Information
IMPORTANT!
Your boiler must be commissioned in order to:
- Validate your warranty
- Ensure the boiler has been installed correctly and avoid premature failure
- Set the boiler to its optimum efficiency. Operating conditions for the boiler will vary from site to site, your
commissioning engineer has specialised equipment to check the oil pressure and analyse the exhaust gases for
temperature, smoke and carbon dioxide content.
Your installer will organise the commissioning of your boiler. Should you experience any difficulty locating an
engineer, our service department may be able to provide you with details of an engineer in your area.
“Benchmark” Installation, Commissioning and Service Record Log Book
Please ensure that your installer has completed all sections of the log book (found at the back of this manual).
The log book will be required in the event of any warranty work. Ensure that the service record is completed.
Warranty
Your HRM boiler is under warranty for 2 years from the date of installation.
Warranty Conditions
- The boiler must be installed and commissioned in accordance with our handbook
- The boiler must not be repaired, modified or tampered with by any person not authorised by HRM
Extended Warranty
The “Benchmark” and warranty registration document at the end of this manual should be completed as
appropriate by your installer / engineer. This is your record that the boiler has been correctly installed in accordance
with our recommendations. Return the warranty registration document to HRM in order to qualify for a further 3 year
warranty of the heat exchanger – a total of 5 years.
Extended Warranty Conditions
- The boiler must be serviced annually and maintained in accordance with this handbook. The
“Benchmark” service log is located at the back of this manual
- This warranty is in addition to your statutory and other legal rights
After Sales Service
- If your boiler fails during the warranty period contact your installer, who will be able to identify the
cause of the problem. If appropriate, your installer will contact us.
- Under no circumstances should “in warranty” work be undertaken without authorisation from the HRM
service department
- If you are unable to contact your installer please contact our service department. Quoting your boiler’s
serial number when phoning – this can be found on the cover of this manual.
3
Standard X-ternal & System X-
ternal
Handbook
Householder Information
IMPORTANT!
Your boiler must be commissioned in order to:
- Validate your warranty
- Ensure the boiler has been installed correctly and avoid premature failure
- Set the boiler to its optimum efficiency. Operating conditions for the boiler will vary from site to site, your
commissioning engineer has specialised equipment to check the oil pressure and analyse the exhaust gases for
temperature, smoke and carbon dioxide content.
Your installer will organise the commissioning of your boiler. Should you experience any difficulty locating an
engineer, our service department may be able to provide you with details of an engineer in your area.
“Benchmark” Installation, Commissioning and Service Record Log Book
Please ensure that your installer has completed all sections of the log book (found at the back of this manual).
The log book will be required in the event of any warranty work. Ensure that the service record is completed.
Warranty
Your HRM boiler is under warranty for 2 years from the date of installation.
Warranty Conditions
- The boiler must be installed and commissioned in accordance with our handbook
- The boiler must not be repaired, modified or tampered with by any person not authorised by HRM
Extended Warranty
The “Benchmark” and warranty registration document at the end of this manual should be completed as
appropriate by your installer / engineer. This is your record that the boiler has been correctly installed in accordance
with our recommendations. Return the warranty registration document to HRM in order to qualify for a further 3 year
warranty of the heat exchanger – a total of 5 years.
Extended Warranty Conditions
- The boiler must be serviced annually and maintained in accordance with this handbook. The
“Benchmark” service log is located at the back of this manual
- This warranty is in addition to your statutory and other legal rights
After Sales Service
- If your boiler fails during the warranty period contact your installer, who will be able to identify the
cause of the problem. If appropriate, your installer will contact us.
- Under no circumstances should “in warranty” work be undertaken without authorisation from the HRM
service department
- If you are unable to contact your installer please contact our service department. Quoting your boiler’s
serial number when phoning – this can be found on the cover of this manual.
3
Standard X-ternal & System X-ternal
Handbook
Householder Information
IMPORTANT!
Your boiler must be commissioned in order to:
- Validate your warranty
- Ensure the boiler has been installed correctly and avoid premature failure
- Set the boiler to its optimum efficiency. Operating conditions for the boiler will vary from site to site, your
commissioning engineer has specialised equipment to check the oil pressure and analyse the exhaust gases for
temperature, smoke and carbon dioxide content.
Your installer will organise the commissioning of your boiler. Should you experience any difficulty locating an
engineer, our service department may be able to provide you with details of an engineer in your area.
“Benchmark” Installation, Commissioning and Service Record Log Book
Please ensure that your installer has completed all sections of the log book (found at the back of this manual).
The log book will be required in the event of any warranty work. Ensure that the service record is completed.
Warranty
Your HRM boiler is under warranty for 2 years from the date of installation.
Warranty Conditions
- The boiler must be installed and commissioned in accordance with our handbook
- The boiler must not be repaired, modified or tampered with by any person not authorised by HRM
Extended Warranty
The “Benchmark” and warranty registration document at the end of this manual should be completed as
appropriate by your installer / engineer. This is your record that the boiler has been correctly installed in accordance
with our recommendations. Return the warranty registration document to HRM in order to qualify for a further 3 year
warranty of the heat exchanger – a total of 5 years.
Extended Warranty Conditions
- The boiler must be serviced annually and maintained in accordance with this handbook. The
“Benchmark” service log is located at the back of this manual
- This warranty is in addition to your statutory and other legal rights
After Sales Service
- If your boiler fails during the warranty period contact your installer, who will be able to identify the
cause of the problem. If appropriate, your installer will contact us.
- Under no circumstances should “in warranty” work be undertaken without authorisation from the HRM
service department
- If you are unable to contact your installer please contact our service department. Quoting your boiler’s
serial number when phoning – this can be found on the cover of this manual.
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Standard X-ternal & System X-ternal
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2
Householder Information
IMPORTANT!
Your boiler must be commissioned in order to:
- Validate your warranty
- Ensure the boiler has been installed correctly and avoid premature failure
- Set the boiler to its optimum efficiency. Operating conditions for the boiler will vary from site to site, your
commissioning engineer has specialised equipment to check the oil pressure and analyse the exhaust gases for
temperature, smoke and carbon dioxide content.
Your installer will organise the commissioning of your boiler. Should you experience any difficulty locating an
engineer, our service department may be able to provide you with details of an engineer in your area.
“Benchmark” Installation, Commissioning and Service Record Log Book
Please ensure that your installer has completed all sections of the log book (found at the back of this manual).
The log book will be required in the event of any warranty work. Ensure that the service record is completed.
Warranty
Your HRM boiler is under warranty for 2 years from the date of installation.
Warranty Conditions
- The boiler must be installed and commissioned in accordance with our handbook
- The boiler must not be repaired, modified or tampered with by any person not authorised by HRM
Extended Warranty
The “Benchmark” and warranty registration document at the end of this manual should be completed as
appropriate by your installer / engineer. This is your record that the boiler has been correctly installed in accordance
with our recommendations. Return the warranty registration document to HRM in order to qualify for a further 3 year
warranty of the heat exchanger – a total of 5 years.
Extended Warranty Conditions
- The boiler must be serviced annually and maintained in accordance with this handbook. The
“Benchmark” service log is located at the back of this manual
- This warranty is in addition to your statutory and other legal rights
After Sales Service
- If your boiler fails during the warranty period contact your installer, who will be able to identify the
cause of the problem and refer to HRM for any warranty work instruction.
- Under no circumstances should “in warranty” work be undertaken without authorisation from the HRM
service department
- If you are unable to contact your installer please contact our service department, quoting your boiler’s
serial number when phoning – this can be found on the cover of this manual.
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Standard X-ternal & System X-ternal
Handbook
Introduction
Dear Householder
Thank you, for selecting a boiler from HRM. Your boiler is the culmination of years of experience in the development,
testing, and manufacture of oil fired equipment.
Our boilers are independently tested and comply with the latest European Boiler Efficiency Directive. Our quality
assurance procedures are also approved and comply with the International Standards, ISO9001:2000 and ISO14001.
Each boiler is assembled and tested with care by a member of our production team.
Your boiler will provide you with a long and trouble free service life providing that a few essential steps are addressed.
Please take time to read the “Householder Information” section of this handbook.
In the unlikely event of a fault, please contact your installer who should be able to identify the cause of the problem, if
appropriate your installer will contact us.
Simon Eastwell
MD
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Standard X-ternal & System X-ternal
Handbook

Householder Information
IMPORTANT!
Your boiler must be commissioned in order to:
- Validate your warranty
- Ensure the boiler has been installed correctly and avoid premature failure
- Set the boiler to its optimum efficiency. Operating conditions for the boiler will vary from site to site, your
commissioning engineer has specialised equipment to check the oil pressure and analyse the exhaust gases for
temperature, smoke and carbon dioxide content.
Your installer will organise the commissioning of your boiler. Should you experience any difficulty locating an
engineer, our service department may be able to provide you with details of an engineer in your area.
“Benchmark” Installation, Commissioning and Service Record Log Book
Please ensure that your installer has completed all sections of the log book (found at the back of this manual).
The log book will be required in the event of any warranty work. Ensure that the service record is completed.
Warranty
Your HRM boiler is under warranty for 2 years from the date of installation.
Warranty Conditions
- The boiler must be installed and commissioned in accordance with our handbook
- The boiler must not be repaired, modified or tampered with by any person not authorised by HRM
Extended Warranty
The “Benchmark” and warranty registration document at the end of this manual should be completed as
appropriate by your installer / engineer. This is your record that the boiler has been correctly installed in accordance
with our recommendations. Return the warranty registration document to HRM in order to qualify for a further 3 year
warranty of the heat exchanger – a total of 5 years.
Extended Warranty Conditions
- The boiler must be serviced annually and maintained in accordance with this handbook. The
“Benchmark” service log is located at the back of this manual
- This warranty is in addition to your statutory and other legal rights
After Sales Service
- If your boiler fails during the warranty period contact your installer, who will be able to identify the
cause of the problem. If appropriate, your installer will contact us.
- Under no circumstances should “in warranty” work be undertaken without authorisation from the HRM
service department
- If you are unable to contact your installer please contact our service department. Quoting your boiler’s
serial number when phoning – this can be found on the cover of this manual.
3
Standard X-ternal & System X-
ternal
Handbook
Householder Information
IMPORTANT!
Your boiler must be commissioned in order to:
- Validate your warranty
- Ensure the boiler has been installed correctly and avoid premature failure
- Set the boiler to its optimum efficiency. Operating conditions for the boiler will vary from site to site, your
commissioning engineer has specialised equipment to check the oil pressure and analyse the exhaust gases for
temperature, smoke and carbon dioxide content.
Your installer will organise the commissioning of your boiler. Should you experience any difficulty locating an
engineer, our service department may be able to provide you with details of an engineer in your area.
“Benchmark” Installation, Commissioning and Service Record Log Book
Please ensure that your installer has completed all sections of the log book (found at the back of this manual).
The log book will be required in the event of any warranty work. Ensure that the service record is completed.
Warranty
Your HRM boiler is under warranty for 2 years from the date of installation.
Warranty Conditions
- The boiler must be installed and commissioned in accordance with our handbook
- The boiler must not be repaired, modified or tampered with by any person not authorised by HRM
Extended Warranty
The “Benchmark” and warranty registration document at the end of this manual should be completed as
appropriate by your installer / engineer. This is your record that the boiler has been correctly installed in accordance
with our recommendations. Return the warranty registration document to HRM in order to qualify for a further 3 year
warranty of the heat exchanger – a total of 5 years.
Extended Warranty Conditions
- The boiler must be serviced annually and maintained in accordance with this handbook. The
“Benchmark” service log is located at the back of this manual
- This warranty is in addition to your statutory and other legal rights
After Sales Service
- If your boiler fails during the warranty period contact your installer, who will be able to identify the
cause of the problem. If appropriate, your installer will contact us.
- Under no circumstances should “in warranty” work be undertaken without authorisation from the HRM
service department
- If you are unable to contact your installer please contact our service department. Quoting your boiler’s
serial number when phoning – this can be found on the cover of this manual.
3
Standard X-ternal & System X-
ternal
Handbook
Householder Information
IMPORTANT!
Your boiler must be commissioned in order to:
- Validate your warranty
- Ensure the boiler has been installed correctly and avoid premature failure
- Set the boiler to its optimum efficiency. Operating conditions for the boiler will vary from site to site, your
commissioning engineer has specialised equipment to check the oil pressure and analyse the exhaust gases for
temperature, smoke and carbon dioxide content.
Your installer will organise the commissioning of your boiler. Should you experience any difficulty locating an
engineer, our service department may be able to provide you with details of an engineer in your area.
“Benchmark” Installation, Commissioning and Service Record Log Book
Please ensure that your installer has completed all sections of the log book (found at the back of this manual).
The log book will be required in the event of any warranty work. Ensure that the service record is completed.
Warranty
Your HRM boiler is under warranty for 2 years from the date of installation.
Warranty Conditions
- The boiler must be installed and commissioned in accordance with our handbook
- The boiler must not be repaired, modified or tampered with by any person not authorised by HRM
Extended Warranty
The “Benchmark” and warranty registration document at the end of this manual should be completed as
appropriate by your installer / engineer. This is your record that the boiler has been correctly installed in accordance
with our recommendations. Return the warranty registration document to HRM in order to qualify for a further 3 year
warranty of the heat exchanger – a total of 5 years.
Extended Warranty Conditions
- The boiler must be serviced annually and maintained in accordance with this handbook. The
“Benchmark” service log is located at the back of this manual
- This warranty is in addition to your statutory and other legal rights
After Sales Service
- If your boiler fails during the warranty period contact your installer, who will be able to identify the
cause of the problem. If appropriate, your installer will contact us.
- Under no circumstances should “in warranty” work be undertaken without authorisation from the HRM
service department
- If you are unable to contact your installer please contact our service department. Quoting your boiler’s
serial number when phoning – this can be found on the cover of this manual.
3
Standard X-ternal & System X-ternal
Handbook
Householder Information
IMPORTANT!
Your boiler must be commissioned in order to:
- Validate your warranty
- Ensure the boiler has been installed correctly and avoid premature failure
- Set the boiler to its optimum efficiency. Operating conditions for the boiler will vary from site to site, your
commissioning engineer has specialised equipment to check the oil pressure and analyse the exhaust gases for
temperature, smoke and carbon dioxide content.
Your installer will organise the commissioning of your boiler. Should you experience any difficulty locating an
engineer, our service department may be able to provide you with details of an engineer in your area.
“Benchmark” Installation, Commissioning and Service Record Log Book
Please ensure that your installer has completed all sections of the log book (found at the back of this manual).
The log book will be required in the event of any warranty work. Ensure that the service record is completed.
Warranty
Your HRM boiler is under warranty for 2 years from the date of installation.
Warranty Conditions
- The boiler must be installed and commissioned in accordance with our handbook
- The boiler must not be repaired, modified or tampered with by any person not authorised by HRM
Extended Warranty
The “Benchmark” and warranty registration document at the end of this manual should be completed as
appropriate by your installer / engineer. This is your record that the boiler has been correctly installed in accordance
with our recommendations. Return the warranty registration document to HRM in order to qualify for a further 3 year
warranty of the heat exchanger – a total of 5 years.
Extended Warranty Conditions
- The boiler must be serviced annually and maintained in accordance with this handbook. The
“Benchmark” service log is located at the back of this manual
- This warranty is in addition to your statutory and other legal rights
After Sales Service
- If your boiler fails during the warranty period contact your installer, who will be able to identify the
cause of the problem. If appropriate, your installer will contact us.
- Under no circumstances should “in warranty” work be undertaken without authorisation from the HRM
service department
- If you are unable to contact your installer please contact our service department. Quoting your boiler’s
serial number when phoning – this can be found on the cover of this manual.
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4
Burner Lockout
The burner is equipped with a flame failure device. When activated the reset button on the burner control box is
illuminated. Refer to the fault finding section of the handbook to identify possible causes.
The test switch is provided for the service engineer, in normal operation the switch should be left in the “PROG”
position.
Switching The Boiler On
- Turn on the oil supply
- Switch on the mains supply
- Set the timer control to “on”
- Set the boiler control thermostat to the required setting
Switching The Boiler Off For Long Periods
- Have the boiler serviced
- Switch off the mains supply (Note: Without power the boiler will have no frost protection)
- Turn off the oil at the tank
Pump Priming
If the burner fails to lift oil, the pump may be dry and require priming. To prime the burner, fill a suitable container, such
as a jar, with heating oil, disconnect the flexible oil line at the isolating valve and place the end into the container.
Hold the container above the height of the burner and press the lockout reset button, once the pump has pulled the oil
from the container through it is primed and can be reconnected to the main supply.
Oil Delivery
Switch the boiler off during an oil delivery, wait for a short period before switching the boiler back on to allow sediment
in the bottom of the oil supply tank to settle.
Maintenance
Your boiler should be serviced annually. Failure to have this done will invalidate your warranty and may also lead to
inconvenient breakdowns. A “Benchmark” service log can be found at the back of this manual.
If you have difficulty in locating a service engineer, please contact our service department who may be able to provide
you with the name of an engineer in your area.
Burner Spares
Please contact our sales department for further information on burner spares.
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Standard X-ternal & System X-ternal
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Boiler Controls – Standard X-Ternal and System X-Ternal
Control Panel
Temperature Control Thermostat
The control thermostat regulates the temperature of the water within the boiler.
The recommended settings, governed by the control knob, are maximum for heating and hot water and minimum for
hot water only.
Boiler Overheat (Limit) Thermostat
In the unlikely event the boiler overheats the reset button will trip and cut the power supply to the boiler. Allow the
boiler to cool then press the reset button to reset the thermostat.
IMPORTANT - If overheating occurs regularly, consult your installation engineer. There may be a fault with the
central heating system
Power Neon Lamp
The lamp is illuminated when there is power to the control thermostat and the control system (time clock) is
requesting heat.
Limit Neon Lamp
The lamp is illuminated when there is power to the controls, but the boiler has overheated. When the limit reset is
pressed this lamp should extinguish.
Lockout Neon Lamp
The remote reset plate supplied with the boiler can be connected to the X-ternal control panel to allow for indoor
resetting of the burner. Simply pass the Molex connector through the cable trunking already used to supply power to
the boiler and connect to the corresponding Molex connector on the control panel. The lamp is illuminated when there
is power to the controls, but the burner has not fired correctly. When the lockout reset is pressed this lamp should
extinguish. This lamp is also a reset button which provides an alternative to pressing the reset on the burner itself.
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Standard X-ternal & System X-ternal
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Householder Information
IMPORTANT!
Your boiler must be commissioned in order to:
- Validate your warranty
- Ensure the boiler has been installed correctly and avoid premature failure
- Set the boiler to its optimum efficiency. Operating conditions for the boiler will vary from site to site, your
commissioning engineer has specialised equipment to check the oil pressure and analyse the exhaust gases for
temperature, smoke and carbon dioxide content.
Your installer will organise the commissioning of your boiler. Should you experience any difficulty locating an
engineer, our service department may be able to provide you with details of an engineer in your area.
“Benchmark” Installation, Commissioning and Service Record Log Book
Please ensure that your installer has completed all sections of the log book (found at the back of this manual).
The log book will be required in the event of any warranty work. Ensure that the service record is completed.
Warranty
Your HRM boiler is under warranty for 2 years from the date of installation.
Warranty Conditions
- The boiler must be installed and commissioned in accordance with our handbook
- The boiler must not be repaired, modified or tampered with by any person not authorised by HRM
Extended Warranty
The “Benchmark” and warranty registration document at the end of this manual should be completed as
appropriate by your installer / engineer. This is your record that the boiler has been correctly installed in accordance
with our recommendations. Return the warranty registration document to HRM in order to qualify for a further 3 year
warranty of the heat exchanger – a total of 5 years.
Extended Warranty Conditions
- The boiler must be serviced annually and maintained in accordance with this handbook. The
“Benchmark” service log is located at the back of this manual
- This warranty is in addition to your statutory and other legal rights
After Sales Service
- If your boiler fails during the warranty period contact your installer, who will be able to identify the
cause of the problem. If appropriate, your installer will contact us.
- Under no circumstances should “in warranty” work be undertaken without authorisation from the HRM
service department
- If you are unable to contact your installer please contact our service department. Quoting your boiler’s
serial number when phoning – this can be found on the cover of this manual.
3
Standard X-ternal & System X-
ternal
Handbook
Householder Information
IMPORTANT!
Your boiler must be commissioned in order to:
- Validate your warranty
- Ensure the boiler has been installed correctly and avoid premature failure
- Set the boiler to its optimum efficiency. Operating conditions for the boiler will vary from site to site, your
commissioning engineer has specialised equipment to check the oil pressure and analyse the exhaust gases for
temperature, smoke and carbon dioxide content.
Your installer will organise the commissioning of your boiler. Should you experience any difficulty locating an
engineer, our service department may be able to provide you with details of an engineer in your area.
“Benchmark” Installation, Commissioning and Service Record Log Book
Please ensure that your installer has completed all sections of the log book (found at the back of this manual).
The log book will be required in the event of any warranty work. Ensure that the service record is completed.
Warranty
Your HRM boiler is under warranty for 2 years from the date of installation.
Warranty Conditions
- The boiler must be installed and commissioned in accordance with our handbook
- The boiler must not be repaired, modified or tampered with by any person not authorised by HRM
Extended Warranty
The “Benchmark” and warranty registration document at the end of this manual should be completed as
appropriate by your installer / engineer. This is your record that the boiler has been correctly installed in accordance
with our recommendations. Return the warranty registration document to HRM in order to qualify for a further 3 year
warranty of the heat exchanger – a total of 5 years.
Extended Warranty Conditions
- The boiler must be serviced annually and maintained in accordance with this handbook. The
“Benchmark” service log is located at the back of this manual
- This warranty is in addition to your statutory and other legal rights
After Sales Service
- If your boiler fails during the warranty period contact your installer, who will be able to identify the
cause of the problem. If appropriate, your installer will contact us.
- Under no circumstances should “in warranty” work be undertaken without authorisation from the HRM
service department
- If you are unable to contact your installer please contact our service department. Quoting your boiler’s
serial number when phoning – this can be found on the cover of this manual.
3
Standard X-ternal & System X-
ternal
Handbook
Householder Information
IMPORTANT!
Your boiler must be commissioned in order to:
- Validate your warranty
- Ensure the boiler has been installed correctly and avoid premature failure
- Set the boiler to its optimum efficiency. Operating conditions for the boiler will vary from site to site, your
commissioning engineer has specialised equipment to check the oil pressure and analyse the exhaust gases for
temperature, smoke and carbon dioxide content.
Your installer will organise the commissioning of your boiler. Should you experience any difficulty locating an
engineer, our service department may be able to provide you with details of an engineer in your area.
“Benchmark” Installation, Commissioning and Service Record Log Book
Please ensure that your installer has completed all sections of the log book (found at the back of this manual).
The log book will be required in the event of any warranty work. Ensure that the service record is completed.
Warranty
Your HRM boiler is under warranty for 2 years from the date of installation.
Warranty Conditions
- The boiler must be installed and commissioned in accordance with our handbook
- The boiler must not be repaired, modified or tampered with by any person not authorised by HRM
Extended Warranty
The “Benchmark” and warranty registration document at the end of this manual should be completed as
appropriate by your installer / engineer. This is your record that the boiler has been correctly installed in accordance
with our recommendations. Return the warranty registration document to HRM in order to qualify for a further 3 year
warranty of the heat exchanger – a total of 5 years.
Extended Warranty Conditions
- The boiler must be serviced annually and maintained in accordance with this handbook. The
“Benchmark” service log is located at the back of this manual
- This warranty is in addition to your statutory and other legal rights
After Sales Service
- If your boiler fails during the warranty period contact your installer, who will be able to identify the
cause of the problem. If appropriate, your installer will contact us.
- Under no circumstances should “in warranty” work be undertaken without authorisation from the HRM
service department
- If you are unable to contact your installer please contact our service department. Quoting your boiler’s
serial number when phoning – this can be found on the cover of this manual.
3
Standard X-ternal & System X-ternal
Handbook
Householder Information
IMPORTANT!
Your boiler must be commissioned in order to:
- Validate your warranty
- Ensure the boiler has been installed correctly and avoid premature failure
- Set the boiler to its optimum efficiency. Operating conditions for the boiler will vary from site to site, your
commissioning engineer has specialised equipment to check the oil pressure and analyse the exhaust gases for
temperature, smoke and carbon dioxide content.
Your installer will organise the commissioning of your boiler. Should you experience any difficulty locating an
engineer, our service department may be able to provide you with details of an engineer in your area.
“Benchmark” Installation, Commissioning and Service Record Log Book
Please ensure that your installer has completed all sections of the log book (found at the back of this manual).
The log book will be required in the event of any warranty work. Ensure that the service record is completed.
Warranty
Your HRM boiler is under warranty for 2 years from the date of installation.
Warranty Conditions
- The boiler must be installed and commissioned in accordance with our handbook
- The boiler must not be repaired, modified or tampered with by any person not authorised by HRM
Extended Warranty
The “Benchmark” and warranty registration document at the end of this manual should be completed as
appropriate by your installer / engineer. This is your record that the boiler has been correctly installed in accordance
with our recommendations. Return the warranty registration document to HRM in order to qualify for a further 3 year
warranty of the heat exchanger – a total of 5 years.
Extended Warranty Conditions
- The boiler must be serviced annually and maintained in accordance with this handbook. The
“Benchmark” service log is located at the back of this manual
- This warranty is in addition to your statutory and other legal rights
After Sales Service
- If your boiler fails during the warranty period contact your installer, who will be able to identify the
cause of the problem. If appropriate, your installer will contact us.
- Under no circumstances should “in warranty” work be undertaken without authorisation from the HRM
service department
- If you are unable to contact your installer please contact our service department. Quoting your boiler’s
serial number when phoning – this can be found on the cover of this manual.
3
Standard X-ternal & System X-ternal
Handbook
7
6
Technical Specifications – Boiler Dimensions – Standard X-ternal (15/19)
Frontal View
Underside View
6
Standard X-ternal & System X-ternal
Handbook
Technical Specifications – Boiler Dimensions – System X-ternal
Frontal View
Underside View
8
Standard X-ternal & System X-ternal
Handbook
For 12/14 Standard
X-ternal (heat only) wall
plate and external casing
measurements are the
same as System X-ternal

Householder Information
IMPORTANT!
Your boiler must be commissioned in order to:
- Validate your warranty
- Ensure the boiler has been installed correctly and avoid premature failure
- Set the boiler to its optimum efficiency. Operating conditions for the boiler will vary from site to site, your
commissioning engineer has specialised equipment to check the oil pressure and analyse the exhaust gases for
temperature, smoke and carbon dioxide content.
Your installer will organise the commissioning of your boiler. Should you experience any difficulty locating an
engineer, our service department may be able to provide you with details of an engineer in your area.
“Benchmark” Installation, Commissioning and Service Record Log Book
Please ensure that your installer has completed all sections of the log book (found at the back of this manual).
The log book will be required in the event of any warranty work. Ensure that the service record is completed.
Warranty
Your HRM boiler is under warranty for 2 years from the date of installation.
Warranty Conditions
- The boiler must be installed and commissioned in accordance with our handbook
- The boiler must not be repaired, modified or tampered with by any person not authorised by HRM
Extended Warranty
The “Benchmark” and warranty registration document at the end of this manual should be completed as
appropriate by your installer / engineer. This is your record that the boiler has been correctly installed in accordance
with our recommendations. Return the warranty registration document to HRM in order to qualify for a further 3 year
warranty of the heat exchanger – a total of 5 years.
Extended Warranty Conditions
- The boiler must be serviced annually and maintained in accordance with this handbook. The
“Benchmark” service log is located at the back of this manual
- This warranty is in addition to your statutory and other legal rights
After Sales Service
- If your boiler fails during the warranty period contact your installer, who will be able to identify the
cause of the problem. If appropriate, your installer will contact us.
- Under no circumstances should “in warranty” work be undertaken without authorisation from the HRM
service department
- If you are unable to contact your installer please contact our service department. Quoting your boiler’s
serial number when phoning – this can be found on the cover of this manual.
3
Standard X-ternal & System X-
ternal
Handbook
Householder Information
IMPORTANT!
Your boiler must be commissioned in order to:
- Validate your warranty
- Ensure the boiler has been installed correctly and avoid premature failure
- Set the boiler to its optimum efficiency. Operating conditions for the boiler will vary from site to site, your
commissioning engineer has specialised equipment to check the oil pressure and analyse the exhaust gases for
temperature, smoke and carbon dioxide content.
Your installer will organise the commissioning of your boiler. Should you experience any difficulty locating an
engineer, our service department may be able to provide you with details of an engineer in your area.
“Benchmark” Installation, Commissioning and Service Record Log Book
Please ensure that your installer has completed all sections of the log book (found at the back of this manual).
The log book will be required in the event of any warranty work. Ensure that the service record is completed.
Warranty
Your HRM boiler is under warranty for 2 years from the date of installation.
Warranty Conditions
- The boiler must be installed and commissioned in accordance with our handbook
- The boiler must not be repaired, modified or tampered with by any person not authorised by HRM
Extended Warranty
The “Benchmark” and warranty registration document at the end of this manual should be completed as
appropriate by your installer / engineer. This is your record that the boiler has been correctly installed in accordance
with our recommendations. Return the warranty registration document to HRM in order to qualify for a further 3 year
warranty of the heat exchanger – a total of 5 years.
Extended Warranty Conditions
- The boiler must be serviced annually and maintained in accordance with this handbook. The
“Benchmark” service log is located at the back of this manual
- This warranty is in addition to your statutory and other legal rights
After Sales Service
- If your boiler fails during the warranty period contact your installer, who will be able to identify the
cause of the problem. If appropriate, your installer will contact us.
- Under no circumstances should “in warranty” work be undertaken without authorisation from the HRM
service department
- If you are unable to contact your installer please contact our service department. Quoting your boiler’s
serial number when phoning – this can be found on the cover of this manual.
3
Standard X-ternal & System X-
ternal
Handbook
Householder Information
IMPORTANT!
Your boiler must be commissioned in order to:
- Validate your warranty
- Ensure the boiler has been installed correctly and avoid premature failure
- Set the boiler to its optimum efficiency. Operating conditions for the boiler will vary from site to site, your
commissioning engineer has specialised equipment to check the oil pressure and analyse the exhaust gases for
temperature, smoke and carbon dioxide content.
Your installer will organise the commissioning of your boiler. Should you experience any difficulty locating an
engineer, our service department may be able to provide you with details of an engineer in your area.
“Benchmark” Installation, Commissioning and Service Record Log Book
Please ensure that your installer has completed all sections of the log book (found at the back of this manual).
The log book will be required in the event of any warranty work. Ensure that the service record is completed.
Warranty
Your HRM boiler is under warranty for 2 years from the date of installation.
Warranty Conditions
- The boiler must be installed and commissioned in accordance with our handbook
- The boiler must not be repaired, modified or tampered with by any person not authorised by HRM
Extended Warranty
The “Benchmark” and warranty registration document at the end of this manual should be completed as
appropriate by your installer / engineer. This is your record that the boiler has been correctly installed in accordance
with our recommendations. Return the warranty registration document to HRM in order to qualify for a further 3 year
warranty of the heat exchanger – a total of 5 years.
Extended Warranty Conditions
- The boiler must be serviced annually and maintained in accordance with this handbook. The
“Benchmark” service log is located at the back of this manual
- This warranty is in addition to your statutory and other legal rights
After Sales Service
- If your boiler fails during the warranty period contact your installer, who will be able to identify the
cause of the problem. If appropriate, your installer will contact us.
- Under no circumstances should “in warranty” work be undertaken without authorisation from the HRM
service department
- If you are unable to contact your installer please contact our service department. Quoting your boiler’s
serial number when phoning – this can be found on the cover of this manual.
3
Standard X-ternal & System X-ternal
Handbook
Householder Information
IMPORTANT!
Your boiler must be commissioned in order to:
- Validate your warranty
- Ensure the boiler has been installed correctly and avoid premature failure
- Set the boiler to its optimum efficiency. Operating conditions for the boiler will vary from site to site, your
commissioning engineer has specialised equipment to check the oil pressure and analyse the exhaust gases for
temperature, smoke and carbon dioxide content.
Your installer will organise the commissioning of your boiler. Should you experience any difficulty locating an
engineer, our service department may be able to provide you with details of an engineer in your area.
“Benchmark” Installation, Commissioning and Service Record Log Book
Please ensure that your installer has completed all sections of the log book (found at the back of this manual).
The log book will be required in the event of any warranty work. Ensure that the service record is completed.
Warranty
Your HRM boiler is under warranty for 2 years from the date of installation.
Warranty Conditions
- The boiler must be installed and commissioned in accordance with our handbook
- The boiler must not be repaired, modified or tampered with by any person not authorised by HRM
Extended Warranty
The “Benchmark” and warranty registration document at the end of this manual should be completed as
appropriate by your installer / engineer. This is your record that the boiler has been correctly installed in accordance
with our recommendations. Return the warranty registration document to HRM in order to qualify for a further 3 year
warranty of the heat exchanger – a total of 5 years.
Extended Warranty Conditions
- The boiler must be serviced annually and maintained in accordance with this handbook. The
“Benchmark” service log is located at the back of this manual
- This warranty is in addition to your statutory and other legal rights
After Sales Service
- If your boiler fails during the warranty period contact your installer, who will be able to identify the
cause of the problem. If appropriate, your installer will contact us.
- Under no circumstances should “in warranty” work be undertaken without authorisation from the HRM
service department
- If you are unable to contact your installer please contact our service department. Quoting your boiler’s
serial number when phoning – this can be found on the cover of this manual.
3
Standard X-ternal & System X-ternal
Handbook
9
8
Technical Specifications
Standard X-ternal
Electrical Supply 230V Single Phase, Fused 5amp
Max Power Consumption 110W
Fuel Class C2 (28 Sec Kerosene)
Oil Supply Connection 10mm Compression, Single Pipe
Heating Systems Requirements Fully Pumped, Conventional Open Vented, or
Sealed System
Max Operating Pressure 3 Bar (43.5psi) Static Head 30.59 Meters
(100ft)
Operating Temperature Range 60 to 80 Degree’s Centigrade
Resistance To Water Flow Between Return
and Flow Connections (10 Deg Temp Rise)
15/19 - 35mm 12/14 - 26mm
Cut Out Temperature 100 Degree’s Centigrade
Weight Empty 15/19 - 93kg 12/14 - 84kg
Water Capacity 15/19 - 19.25 Litres 12/14 - 17.5 Litres
SEDBUK Rating A
System X-ternal
Electrical Supply 230V Single Phase, Fused 5amp
Max Power Consumption 110W
Fuel Class C2 (28 Sec Kerosene)
Oil Supply Connection 10mm Compression, Single Pipe
Heating Systems Requirements Sealed Systems Only
Max Operating Pressure 3 Bar (43.5psi) Static Head 30.59 Meters
(100ft)
Operating Temperature Range 60 to 80 Degree’s Centigrade
Resistance To Water Flow Between Return
and Flow Connections (10 Deg Temp Rise)
12/14 – 26mm
Cut Out Temperature 100 Degree’s Centigrade
Weight Empty 12/14 - 84kg
Water Capacity 12/14 - 17.5 Litres
SEDBUK Rating A
9
Standard X-ternal & System X-ternal
Handbook
Technical Specifications – Burner Settings
Burner Fault Diagnosis
Burner fails to start - Mains lamp not illuminated
Blown fuse
Time clock/programmer not calling for heat
Room or hot water thermostats not calling for heat
Burner lockout lamp is illuminated - Lack of oil
Faulty solenoid coil
Blocked nozzle
Faulty fire valve
Air in oil supply
Empty oil tank
Blocked Oil Filter
Flame extinguishes after a short period
Photocell faulty
Faulty control box
No spark
Faulty control box
Faulty ignition transformer
Incorrect electrode setting
Motor does not run - Seized oil pump
Motor faulty
Control box faulty
Capacitor faulty
Radio/T.V interference - Incorrect electrode setting
Poor earth bonding
Faulty ignition transformer
Smokey exhaust - Blocked nozzle
Incorrect burner settings
Burner starts violently - Delayed Ignition
Incorrect electrode adjustment
Electrode insulation damaged
HT leads faulty
Air in oil supply
Incorrect air adjustment
Oil odours - Incorrect combustion settings
Oil leak
Unstable flame - Incorrect head settings
Low oil pressure
Excess air
Faulty nozzle
btu/h
Kw
Nozzle
US/GPH
Size & Type
BAR
PSI
Kg/hr
Litres/hr
Smoke No.
Bacharach Scale
CO2
%
Flue Gas Temp
Less ambiant °C
SEDBUK
Band
Oil Pressure
Boiler Model
12/14 Condensing
Firing Rate
1.34
1.7
0.50 80° EH
6.9
100
Output
15/19 Condensing
A
0
11.5
12
85
A
64,850
19
8.6
125
1.63
0.55 80° EH
85
47,800
14
2.05
0
10
Standard X-ternal & System X-ternal
Handbook

Householder Information
IMPORTANT!
Your boiler must be commissioned in order to:
- Validate your warranty
- Ensure the boiler has been installed correctly and avoid premature failure
- Set the boiler to its optimum efficiency. Operating conditions for the boiler will vary from site to site, your
commissioning engineer has specialised equipment to check the oil pressure and analyse the exhaust gases for
temperature, smoke and carbon dioxide content.
Your installer will organise the commissioning of your boiler. Should you experience any difficulty locating an
engineer, our service department may be able to provide you with details of an engineer in your area.
“Benchmark” Installation, Commissioning and Service Record Log Book
Please ensure that your installer has completed all sections of the log book (found at the back of this manual).
The log book will be required in the event of any warranty work. Ensure that the service record is completed.
Warranty
Your HRM boiler is under warranty for 2 years from the date of installation.
Warranty Conditions
- The boiler must be installed and commissioned in accordance with our handbook
- The boiler must not be repaired, modified or tampered with by any person not authorised by HRM
Extended Warranty
The “Benchmark” and warranty registration document at the end of this manual should be completed as
appropriate by your installer / engineer. This is your record that the boiler has been correctly installed in accordance
with our recommendations. Return the warranty registration document to HRM in order to qualify for a further 3 year
warranty of the heat exchanger – a total of 5 years.
Extended Warranty Conditions
- The boiler must be serviced annually and maintained in accordance with this handbook. The
“Benchmark” service log is located at the back of this manual
- This warranty is in addition to your statutory and other legal rights
After Sales Service
- If your boiler fails during the warranty period contact your installer, who will be able to identify the
cause of the problem. If appropriate, your installer will contact us.
- Under no circumstances should “in warranty” work be undertaken without authorisation from the HRM
service department
- If you are unable to contact your installer please contact our service department. Quoting your boiler’s
serial number when phoning – this can be found on the cover of this manual.
3
Standard X-ternal & System X-
ternal
Handbook
Householder Information
IMPORTANT!
Your boiler must be commissioned in order to:
- Validate your warranty
- Ensure the boiler has been installed correctly and avoid premature failure
- Set the boiler to its optimum efficiency. Operating conditions for the boiler will vary from site to site, your
commissioning engineer has specialised equipment to check the oil pressure and analyse the exhaust gases for
temperature, smoke and carbon dioxide content.
Your installer will organise the commissioning of your boiler. Should you experience any difficulty locating an
engineer, our service department may be able to provide you with details of an engineer in your area.
“Benchmark” Installation, Commissioning and Service Record Log Book
Please ensure that your installer has completed all sections of the log book (found at the back of this manual).
The log book will be required in the event of any warranty work. Ensure that the service record is completed.
Warranty
Your HRM boiler is under warranty for 2 years from the date of installation.
Warranty Conditions
- The boiler must be installed and commissioned in accordance with our handbook
- The boiler must not be repaired, modified or tampered with by any person not authorised by HRM
Extended Warranty
The “Benchmark” and warranty registration document at the end of this manual should be completed as
appropriate by your installer / engineer. This is your record that the boiler has been correctly installed in accordance
with our recommendations. Return the warranty registration document to HRM in order to qualify for a further 3 year
warranty of the heat exchanger – a total of 5 years.
Extended Warranty Conditions
- The boiler must be serviced annually and maintained in accordance with this handbook. The
“Benchmark” service log is located at the back of this manual
- This warranty is in addition to your statutory and other legal rights
After Sales Service
- If your boiler fails during the warranty period contact your installer, who will be able to identify the
cause of the problem. If appropriate, your installer will contact us.
- Under no circumstances should “in warranty” work be undertaken without authorisation from the HRM
service department
- If you are unable to contact your installer please contact our service department. Quoting your boiler’s
serial number when phoning – this can be found on the cover of this manual.
3
Standard X-ternal & System X-
ternal
Handbook
Householder Information
IMPORTANT!
Your boiler must be commissioned in order to:
- Validate your warranty
- Ensure the boiler has been installed correctly and avoid premature failure
- Set the boiler to its optimum efficiency. Operating conditions for the boiler will vary from site to site, your
commissioning engineer has specialised equipment to check the oil pressure and analyse the exhaust gases for
temperature, smoke and carbon dioxide content.
Your installer will organise the commissioning of your boiler. Should you experience any difficulty locating an
engineer, our service department may be able to provide you with details of an engineer in your area.
“Benchmark” Installation, Commissioning and Service Record Log Book
Please ensure that your installer has completed all sections of the log book (found at the back of this manual).
The log book will be required in the event of any warranty work. Ensure that the service record is completed.
Warranty
Your HRM boiler is under warranty for 2 years from the date of installation.
Warranty Conditions
- The boiler must be installed and commissioned in accordance with our handbook
- The boiler must not be repaired, modified or tampered with by any person not authorised by HRM
Extended Warranty
The “Benchmark” and warranty registration document at the end of this manual should be completed as
appropriate by your installer / engineer. This is your record that the boiler has been correctly installed in accordance
with our recommendations. Return the warranty registration document to HRM in order to qualify for a further 3 year
warranty of the heat exchanger – a total of 5 years.
Extended Warranty Conditions
- The boiler must be serviced annually and maintained in accordance with this handbook. The
“Benchmark” service log is located at the back of this manual
- This warranty is in addition to your statutory and other legal rights
After Sales Service
- If your boiler fails during the warranty period contact your installer, who will be able to identify the
cause of the problem. If appropriate, your installer will contact us.
- Under no circumstances should “in warranty” work be undertaken without authorisation from the HRM
service department
- If you are unable to contact your installer please contact our service department. Quoting your boiler’s
serial number when phoning – this can be found on the cover of this manual.
3
Standard X-ternal & System X-ternal
Handbook
Householder Information
IMPORTANT!
Your boiler must be commissioned in order to:
- Validate your warranty
- Ensure the boiler has been installed correctly and avoid premature failure
- Set the boiler to its optimum efficiency. Operating conditions for the boiler will vary from site to site, your
commissioning engineer has specialised equipment to check the oil pressure and analyse the exhaust gases for
temperature, smoke and carbon dioxide content.
Your installer will organise the commissioning of your boiler. Should you experience any difficulty locating an
engineer, our service department may be able to provide you with details of an engineer in your area.
“Benchmark” Installation, Commissioning and Service Record Log Book
Please ensure that your installer has completed all sections of the log book (found at the back of this manual).
The log book will be required in the event of any warranty work. Ensure that the service record is completed.
Warranty
Your HRM boiler is under warranty for 2 years from the date of installation.
Warranty Conditions
- The boiler must be installed and commissioned in accordance with our handbook
- The boiler must not be repaired, modified or tampered with by any person not authorised by HRM
Extended Warranty
The “Benchmark” and warranty registration document at the end of this manual should be completed as
appropriate by your installer / engineer. This is your record that the boiler has been correctly installed in accordance
with our recommendations. Return the warranty registration document to HRM in order to qualify for a further 3 year
warranty of the heat exchanger – a total of 5 years.
Extended Warranty Conditions
- The boiler must be serviced annually and maintained in accordance with this handbook. The
“Benchmark” service log is located at the back of this manual
- This warranty is in addition to your statutory and other legal rights
After Sales Service
- If your boiler fails during the warranty period contact your installer, who will be able to identify the
cause of the problem. If appropriate, your installer will contact us.
- Under no circumstances should “in warranty” work be undertaken without authorisation from the HRM
service department
- If you are unable to contact your installer please contact our service department. Quoting your boiler’s
serial number when phoning – this can be found on the cover of this manual.
3
Standard X-ternal & System X-ternal
Handbook
11
10
Boiler Installation
Regulations
The Installation of oil fired boilers must comply with the following Standards and Codes of Practice:
BS 5410-1:1997 Oil installations up to 45kW
BS 5449 Forced circulation hot water central heating systems for domestic premises
BS 7593:2006 Treatment of water in hot water central heating systems
Building Regulations Part L1 Part J 2006 England and Wales, Part F Scottish Regulations and Technical
Booklet L Northern Ireland
BS 7671:2001 Electrical Regulations
BS 7074 Code of practice for sealed systems
Boiler Sizing
It is important to establish the correct size of boiler required. Boiler output will depend on a number of factors,
including:
- The preferred room temperatures
- Location winter temperature
- Structural and ventilation heat losses
- Domestic hot water requirements
This is a complicated calculation, we recommend you employ the services of a heating engineer, who will determine
the correct size of boiler required for your property.
Refurbishing an Old System
IMPORTANT – Before installing a new boiler:
The system should be chemically cleaned to remove debris, in the form of black magnetite sludge and lime scale that
accumulates in radiators and pipe work. Failure to do this will result in debris adhering to the clean surfaces of a new
boiler, causing kettling or knocking noises. It also prohibits efficient heat transfer. A cleanser such as Fernox
Superfloc should be added to the system 48 hours prior to changing the boiler
System Protection
After Installation
Flush the system with a cleanser to remove traces of flux residues, grease, metal swarf, solder pieces and oils used
during component manufacture.
After Flushing
Add a corrosion inhibitor. This will minimise the chemical action and chemical change that takes place in a systems
primary water and system components.
Note: The manufacturer’s usage instructions for chemical cleaners and inhibitors should always be followed.
Please refer to BS 7593:2006 for a detailed explanation of cleansing procedures.
11
Standard X-ternal & System X-ternal
Handbook
Boiler Installation - Continued
Boiler Location
Noise levels – consideration should be given to the following:
- Where a flue terminates near the boundary of an adjoining property, consideration should be given to
possible noise disturbance as some people are sensitive to even low noise levels.
Wall Construction
The boiler must be installed on a suitable load bearing external wall.
For walls constructed of timber, stramit or similar material, the structural material must support the weight
of the boiler when filled with water. A stud work frame should be constructed when appropriate.
It is not necessary to construct a heat barrier around the wall plate.
Where the external cladding is of weatherboard or similar, construct a “picture frame” for the wall plate to
seat against.
12
Standard X-ternal & System X-ternal
Handbook

Householder Information
IMPORTANT!
Your boiler must be commissioned in order to:
- Validate your warranty
- Ensure the boiler has been installed correctly and avoid premature failure
- Set the boiler to its optimum efficiency. Operating conditions for the boiler will vary from site to site, your
commissioning engineer has specialised equipment to check the oil pressure and analyse the exhaust gases for
temperature, smoke and carbon dioxide content.
Your installer will organise the commissioning of your boiler. Should you experience any difficulty locating an
engineer, our service department may be able to provide you with details of an engineer in your area.
“Benchmark” Installation, Commissioning and Service Record Log Book
Please ensure that your installer has completed all sections of the log book (found at the back of this manual).
The log book will be required in the event of any warranty work. Ensure that the service record is completed.
Warranty
Your HRM boiler is under warranty for 2 years from the date of installation.
Warranty Conditions
- The boiler must be installed and commissioned in accordance with our handbook
- The boiler must not be repaired, modified or tampered with by any person not authorised by HRM
Extended Warranty
The “Benchmark” and warranty registration document at the end of this manual should be completed as
appropriate by your installer / engineer. This is your record that the boiler has been correctly installed in accordance
with our recommendations. Return the warranty registration document to HRM in order to qualify for a further 3 year
warranty of the heat exchanger – a total of 5 years.
Extended Warranty Conditions
- The boiler must be serviced annually and maintained in accordance with this handbook. The
“Benchmark” service log is located at the back of this manual
- This warranty is in addition to your statutory and other legal rights
After Sales Service
- If your boiler fails during the warranty period contact your installer, who will be able to identify the
cause of the problem. If appropriate, your installer will contact us.
- Under no circumstances should “in warranty” work be undertaken without authorisation from the HRM
service department
- If you are unable to contact your installer please contact our service department. Quoting your boiler’s
serial number when phoning – this can be found on the cover of this manual.
3
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ternal
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Householder Information
IMPORTANT!
Your boiler must be commissioned in order to:
- Validate your warranty
- Ensure the boiler has been installed correctly and avoid premature failure
- Set the boiler to its optimum efficiency. Operating conditions for the boiler will vary from site to site, your
commissioning engineer has specialised equipment to check the oil pressure and analyse the exhaust gases for
temperature, smoke and carbon dioxide content.
Your installer will organise the commissioning of your boiler. Should you experience any difficulty locating an
engineer, our service department may be able to provide you with details of an engineer in your area.
“Benchmark” Installation, Commissioning and Service Record Log Book
Please ensure that your installer has completed all sections of the log book (found at the back of this manual).
The log book will be required in the event of any warranty work. Ensure that the service record is completed.
Warranty
Your HRM boiler is under warranty for 2 years from the date of installation.
Warranty Conditions
- The boiler must be installed and commissioned in accordance with our handbook
- The boiler must not be repaired, modified or tampered with by any person not authorised by HRM
Extended Warranty
The “Benchmark” and warranty registration document at the end of this manual should be completed as
appropriate by your installer / engineer. This is your record that the boiler has been correctly installed in accordance
with our recommendations. Return the warranty registration document to HRM in order to qualify for a further 3 year
warranty of the heat exchanger – a total of 5 years.
Extended Warranty Conditions
- The boiler must be serviced annually and maintained in accordance with this handbook. The
“Benchmark” service log is located at the back of this manual
- This warranty is in addition to your statutory and other legal rights
After Sales Service
- If your boiler fails during the warranty period contact your installer, who will be able to identify the
cause of the problem. If appropriate, your installer will contact us.
- Under no circumstances should “in warranty” work be undertaken without authorisation from the HRM
service department
- If you are unable to contact your installer please contact our service department. Quoting your boiler’s
serial number when phoning – this can be found on the cover of this manual.
3
Standard X-ternal & System X-
ternal
Handbook
Householder Information
IMPORTANT!
Your boiler must be commissioned in order to:
- Validate your warranty
- Ensure the boiler has been installed correctly and avoid premature failure
- Set the boiler to its optimum efficiency. Operating conditions for the boiler will vary from site to site, your
commissioning engineer has specialised equipment to check the oil pressure and analyse the exhaust gases for
temperature, smoke and carbon dioxide content.
Your installer will organise the commissioning of your boiler. Should you experience any difficulty locating an
engineer, our service department may be able to provide you with details of an engineer in your area.
“Benchmark” Installation, Commissioning and Service Record Log Book
Please ensure that your installer has completed all sections of the log book (found at the back of this manual).
The log book will be required in the event of any warranty work. Ensure that the service record is completed.
Warranty
Your HRM boiler is under warranty for 2 years from the date of installation.
Warranty Conditions
- The boiler must be installed and commissioned in accordance with our handbook
- The boiler must not be repaired, modified or tampered with by any person not authorised by HRM
Extended Warranty
The “Benchmark” and warranty registration document at the end of this manual should be completed as
appropriate by your installer / engineer. This is your record that the boiler has been correctly installed in accordance
with our recommendations. Return the warranty registration document to HRM in order to qualify for a further 3 year
warranty of the heat exchanger – a total of 5 years.
Extended Warranty Conditions
- The boiler must be serviced annually and maintained in accordance with this handbook. The
“Benchmark” service log is located at the back of this manual
- This warranty is in addition to your statutory and other legal rights
After Sales Service
- If your boiler fails during the warranty period contact your installer, who will be able to identify the
cause of the problem. If appropriate, your installer will contact us.
- Under no circumstances should “in warranty” work be undertaken without authorisation from the HRM
service department
- If you are unable to contact your installer please contact our service department. Quoting your boiler’s
serial number when phoning – this can be found on the cover of this manual.
3
Standard X-ternal & System X-ternal
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Householder Information
IMPORTANT!
Your boiler must be commissioned in order to:
- Validate your warranty
- Ensure the boiler has been installed correctly and avoid premature failure
- Set the boiler to its optimum efficiency. Operating conditions for the boiler will vary from site to site, your
commissioning engineer has specialised equipment to check the oil pressure and analyse the exhaust gases for
temperature, smoke and carbon dioxide content.
Your installer will organise the commissioning of your boiler. Should you experience any difficulty locating an
engineer, our service department may be able to provide you with details of an engineer in your area.
“Benchmark” Installation, Commissioning and Service Record Log Book
Please ensure that your installer has completed all sections of the log book (found at the back of this manual).
The log book will be required in the event of any warranty work. Ensure that the service record is completed.
Warranty
Your HRM boiler is under warranty for 2 years from the date of installation.
Warranty Conditions
- The boiler must be installed and commissioned in accordance with our handbook
- The boiler must not be repaired, modified or tampered with by any person not authorised by HRM
Extended Warranty
The “Benchmark” and warranty registration document at the end of this manual should be completed as
appropriate by your installer / engineer. This is your record that the boiler has been correctly installed in accordance
with our recommendations. Return the warranty registration document to HRM in order to qualify for a further 3 year
warranty of the heat exchanger – a total of 5 years.
Extended Warranty Conditions
- The boiler must be serviced annually and maintained in accordance with this handbook. The
“Benchmark” service log is located at the back of this manual
- This warranty is in addition to your statutory and other legal rights
After Sales Service
- If your boiler fails during the warranty period contact your installer, who will be able to identify the
cause of the problem. If appropriate, your installer will contact us.
- Under no circumstances should “in warranty” work be undertaken without authorisation from the HRM
service department
- If you are unable to contact your installer please contact our service department. Quoting your boiler’s
serial number when phoning – this can be found on the cover of this manual.
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13
12
Flue Guard Assembly Instructions
1. Mark & Drill Holes
Place the flue guard onto the front of the casing, mark out
and drill the four 5mm holes.
Note: Drill smaller pilot holes first to reduce the risk of the
fibreglass case cracking.
2. Bolts & Washers
Pass a stainless steel bolt with a washer through the front
of the guard bracket. Place another washer on the back
so it sits between the guard and the casing.
3. Securing Guard
Secure the guard onto the case using a further washer
and nut on the inside.
4. Installation Complete
The installation of the X-ternal flue terminal guard is now
complete.
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Flue Terminating Positions
Information taken from BS 5410-1:1997
Notes:
1 - Terminals should be positioned so as to avoid products of combustion accumulating in stagnant pockets around
the building or entering into buildings.
2 - Where a flue is terminated less than 600mm away from a projection above it and the projection consists of plastics
or has a combustible or painted surface, then a shield of at least 750mm should be fitted to protect these surfaces.
3 - If the lowest part of the terminal is less than 2m above the ground, balcony, flat roof or other place to which any
person has access, the terminal should be protected by a guard.
4 - Where a flue terminates near the boundry of an ajoining property, consideration should be given to possible noise
disturbance as some people are sensitive to even low noise levels.
5 - Boilers can produce sulphur deposits, occasionally these deposits are discharged out of the flue, this should be
taken into consideration when planning to site flue’s over patios etc.
Position Description Dimension
A Directly Below An Opening (Air Brick, Window, etc) 600mm
B Horizontally To An Opening 600mm
C Below a Gutter, Eaves or Balcony With Protection (Note 2) 75mm
D Below a Gutter, Eaves or Balcony Without Protection 600mm
E From Vertical Sanitary Pipework 300mm
F From An Internal or External Corner 300mm
G Above Ground or Balcony Level 300mm
H From Surface or Boundry Facing The Terminal 2500mm
J From a Terminal Facing a Terminal 1200mm
K Vertical From a Terminal On The Same Wall 1500mm
L Horizontally From A Terminal On The Same Wall 750mm
M From An Oil Tank 1800mm
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Standard X-ternal & System X-ternal
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Householder Information
IMPORTANT!
Your boiler must be commissioned in order to:
- Validate your warranty
- Ensure the boiler has been installed correctly and avoid premature failure
- Set the boiler to its optimum efficiency. Operating conditions for the boiler will vary from site to site, your
commissioning engineer has specialised equipment to check the oil pressure and analyse the exhaust gases for
temperature, smoke and carbon dioxide content.
Your installer will organise the commissioning of your boiler. Should you experience any difficulty locating an
engineer, our service department may be able to provide you with details of an engineer in your area.
“Benchmark” Installation, Commissioning and Service Record Log Book
Please ensure that your installer has completed all sections of the log book (found at the back of this manual).
The log book will be required in the event of any warranty work. Ensure that the service record is completed.
Warranty
Your HRM boiler is under warranty for 2 years from the date of installation.
Warranty Conditions
- The boiler must be installed and commissioned in accordance with our handbook
- The boiler must not be repaired, modified or tampered with by any person not authorised by HRM
Extended Warranty
The “Benchmark” and warranty registration document at the end of this manual should be completed as
appropriate by your installer / engineer. This is your record that the boiler has been correctly installed in accordance
with our recommendations. Return the warranty registration document to HRM in order to qualify for a further 3 year
warranty of the heat exchanger – a total of 5 years.
Extended Warranty Conditions
- The boiler must be serviced annually and maintained in accordance with this handbook. The
“Benchmark” service log is located at the back of this manual
- This warranty is in addition to your statutory and other legal rights
After Sales Service
- If your boiler fails during the warranty period contact your installer, who will be able to identify the
cause of the problem. If appropriate, your installer will contact us.
- Under no circumstances should “in warranty” work be undertaken without authorisation from the HRM
service department
- If you are unable to contact your installer please contact our service department. Quoting your boiler’s
serial number when phoning – this can be found on the cover of this manual.
3
Standard X-ternal & System X-
ternal
Handbook
Householder Information
IMPORTANT!
Your boiler must be commissioned in order to:
- Validate your warranty
- Ensure the boiler has been installed correctly and avoid premature failure
- Set the boiler to its optimum efficiency. Operating conditions for the boiler will vary from site to site, your
commissioning engineer has specialised equipment to check the oil pressure and analyse the exhaust gases for
temperature, smoke and carbon dioxide content.
Your installer will organise the commissioning of your boiler. Should you experience any difficulty locating an
engineer, our service department may be able to provide you with details of an engineer in your area.
“Benchmark” Installation, Commissioning and Service Record Log Book
Please ensure that your installer has completed all sections of the log book (found at the back of this manual).
The log book will be required in the event of any warranty work. Ensure that the service record is completed.
Warranty
Your HRM boiler is under warranty for 2 years from the date of installation.
Warranty Conditions
- The boiler must be installed and commissioned in accordance with our handbook
- The boiler must not be repaired, modified or tampered with by any person not authorised by HRM
Extended Warranty
The “Benchmark” and warranty registration document at the end of this manual should be completed as
appropriate by your installer / engineer. This is your record that the boiler has been correctly installed in accordance
with our recommendations. Return the warranty registration document to HRM in order to qualify for a further 3 year
warranty of the heat exchanger – a total of 5 years.
Extended Warranty Conditions
- The boiler must be serviced annually and maintained in accordance with this handbook. The
“Benchmark” service log is located at the back of this manual
- This warranty is in addition to your statutory and other legal rights
After Sales Service
- If your boiler fails during the warranty period contact your installer, who will be able to identify the
cause of the problem. If appropriate, your installer will contact us.
- Under no circumstances should “in warranty” work be undertaken without authorisation from the HRM
service department
- If you are unable to contact your installer please contact our service department. Quoting your boiler’s
serial number when phoning – this can be found on the cover of this manual.
3
Standard X-ternal & System X-
ternal
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Householder Information
IMPORTANT!
Your boiler must be commissioned in order to:
- Validate your warranty
- Ensure the boiler has been installed correctly and avoid premature failure
- Set the boiler to its optimum efficiency. Operating conditions for the boiler will vary from site to site, your
commissioning engineer has specialised equipment to check the oil pressure and analyse the exhaust gases for
temperature, smoke and carbon dioxide content.
Your installer will organise the commissioning of your boiler. Should you experience any difficulty locating an
engineer, our service department may be able to provide you with details of an engineer in your area.
“Benchmark” Installation, Commissioning and Service Record Log Book
Please ensure that your installer has completed all sections of the log book (found at the back of this manual).
The log book will be required in the event of any warranty work. Ensure that the service record is completed.
Warranty
Your HRM boiler is under warranty for 2 years from the date of installation.
Warranty Conditions
- The boiler must be installed and commissioned in accordance with our handbook
- The boiler must not be repaired, modified or tampered with by any person not authorised by HRM
Extended Warranty
The “Benchmark” and warranty registration document at the end of this manual should be completed as
appropriate by your installer / engineer. This is your record that the boiler has been correctly installed in accordance
with our recommendations. Return the warranty registration document to HRM in order to qualify for a further 3 year
warranty of the heat exchanger – a total of 5 years.
Extended Warranty Conditions
- The boiler must be serviced annually and maintained in accordance with this handbook. The
“Benchmark” service log is located at the back of this manual
- This warranty is in addition to your statutory and other legal rights
After Sales Service
- If your boiler fails during the warranty period contact your installer, who will be able to identify the
cause of the problem. If appropriate, your installer will contact us.
- Under no circumstances should “in warranty” work be undertaken without authorisation from the HRM
service department
- If you are unable to contact your installer please contact our service department. Quoting your boiler’s
serial number when phoning – this can be found on the cover of this manual.
3
Standard X-ternal & System X-ternal
Handbook
Householder Information
IMPORTANT!
Your boiler must be commissioned in order to:
- Validate your warranty
- Ensure the boiler has been installed correctly and avoid premature failure
- Set the boiler to its optimum efficiency. Operating conditions for the boiler will vary from site to site, your
commissioning engineer has specialised equipment to check the oil pressure and analyse the exhaust gases for
temperature, smoke and carbon dioxide content.
Your installer will organise the commissioning of your boiler. Should you experience any difficulty locating an
engineer, our service department may be able to provide you with details of an engineer in your area.
“Benchmark” Installation, Commissioning and Service Record Log Book
Please ensure that your installer has completed all sections of the log book (found at the back of this manual).
The log book will be required in the event of any warranty work. Ensure that the service record is completed.
Warranty
Your HRM boiler is under warranty for 2 years from the date of installation.
Warranty Conditions
- The boiler must be installed and commissioned in accordance with our handbook
- The boiler must not be repaired, modified or tampered with by any person not authorised by HRM
Extended Warranty
The “Benchmark” and warranty registration document at the end of this manual should be completed as
appropriate by your installer / engineer. This is your record that the boiler has been correctly installed in accordance
with our recommendations. Return the warranty registration document to HRM in order to qualify for a further 3 year
warranty of the heat exchanger – a total of 5 years.
Extended Warranty Conditions
- The boiler must be serviced annually and maintained in accordance with this handbook. The
“Benchmark” service log is located at the back of this manual
- This warranty is in addition to your statutory and other legal rights
After Sales Service
- If your boiler fails during the warranty period contact your installer, who will be able to identify the
cause of the problem. If appropriate, your installer will contact us.
- Under no circumstances should “in warranty” work be undertaken without authorisation from the HRM
service department
- If you are unable to contact your installer please contact our service department. Quoting your boiler’s
serial number when phoning – this can be found on the cover of this manual.
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15
14
Fuel Supply System
Oil Tank
We recommend the use of plastic oil tanks, they require less maintenance than steel tanks and are longer lasting.
A bunded oil tank may be required on any environmentally sensitive site where spillage of oil could pollute rivers,
ponds, or any other water courses. Please refer to the appropriate requirements when locating oil tanks: “Control of
Pollution Regulations”, “Building Regulations” and OFTEC Technical Paper T19.
Oil Supply
Fuel Tank Below the Burner
The fuel pump can lift fuel to a height of 2.5m. A two pipe system or deaerator (Tiger Loop, 3K or similar) is not
required. For heights above 2.5m, please consult our service department.
Pipework
Soldered fittings should not be used, as the joints will fail in the event of a fire. Flux deposits may damage the pump
and fuel may deteriorate the solder within the joint. Galvanised pipes and fittings must not be used. The aggressive
action of the fuel will erode the zinc and damage the fuel pump.
Keep the number of pipe joints to a minimum, form bends rather than using compression fittings.
Joining Compounds
Jointing compounds should be used with care. Excessive amounts can cause blockages, and fragments may cause
failure of the fuel pump or the non-return valve. We recommend the use of a non-setting liquid pipe sealant.
Automatic Isolation of the Fuel Supply in the Event of a Fire
In accordance with Document J of the Building Regulations “a means of automatic isolation of the fuel
supply” should be used. A remote acting fire valve being the most common in accordance with BS 5410-
1:1997
Oil Filtration
The paper element filter supplied must be installed adjacent to the boiler. Where a steel oil tank is installed we
recommend a further paper element filter is also fitted adjacent to the oil tank, replacement elements are available (Pt.
No. BS076)
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Standard X-ternal & System X-ternal
Handbook
CONCRETE BASE
OIL TANK TO BOILER
10mm
COPPER
PIPE
MAXIMUM 100M
SIGHT
GAUGE
ISOLATING VALVE
Installation Procedure – Standard X-ternal
1. Unpack The Boiler
Remove the fibre glass cover, burner assembly, silencer box
assembly, heat exchanger, top baffle and control panel.
Note: Keys for the fibre glass cover are secured to the burner.
2. Attach Wall Plate To Wall
4 Rawl bolts are supplied to secure the wall plate to the wall. The
drill size for the Rawl bolts is 14mm.
Secure the wall plate to the wall and ensure that it is level
3. Drill Holes For Pipe Work / Power Supply
Once the wall plate is secure, drill holes for the pipe work and
power supply connections with a suitably sized drill bit.
4. Heat Exchanger
The boiler is supplied with 22mm copper end feed bends for the
flow and return connections, and a drain cock.
Lift the heat exchanger into position, secure with nuts and
washers provided.
IMPORTANT: The heat exchanger is heavy, two people will
be required to lift it into position.
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Householder Information
IMPORTANT!
Your boiler must be commissioned in order to:
- Validate your warranty
- Ensure the boiler has been installed correctly and avoid premature failure
- Set the boiler to its optimum efficiency. Operating conditions for the boiler will vary from site to site, your
commissioning engineer has specialised equipment to check the oil pressure and analyse the exhaust gases for
temperature, smoke and carbon dioxide content.
Your installer will organise the commissioning of your boiler. Should you experience any difficulty locating an
engineer, our service department may be able to provide you with details of an engineer in your area.
“Benchmark” Installation, Commissioning and Service Record Log Book
Please ensure that your installer has completed all sections of the log book (found at the back of this manual).
The log book will be required in the event of any warranty work. Ensure that the service record is completed.
Warranty
Your HRM boiler is under warranty for 2 years from the date of installation.
Warranty Conditions
- The boiler must be installed and commissioned in accordance with our handbook
- The boiler must not be repaired, modified or tampered with by any person not authorised by HRM
Extended Warranty
The “Benchmark” and warranty registration document at the end of this manual should be completed as
appropriate by your installer / engineer. This is your record that the boiler has been correctly installed in accordance
with our recommendations. Return the warranty registration document to HRM in order to qualify for a further 3 year
warranty of the heat exchanger – a total of 5 years.
Extended Warranty Conditions
- The boiler must be serviced annually and maintained in accordance with this handbook. The
“Benchmark” service log is located at the back of this manual
- This warranty is in addition to your statutory and other legal rights
After Sales Service
- If your boiler fails during the warranty period contact your installer, who will be able to identify the
cause of the problem. If appropriate, your installer will contact us.
- Under no circumstances should “in warranty” work be undertaken without authorisation from the HRM
service department
- If you are unable to contact your installer please contact our service department. Quoting your boiler’s
serial number when phoning – this can be found on the cover of this manual.
3
Standard X-ternal & System X-
ternal
Handbook
Householder Information
IMPORTANT!
Your boiler must be commissioned in order to:
- Validate your warranty
- Ensure the boiler has been installed correctly and avoid premature failure
- Set the boiler to its optimum efficiency. Operating conditions for the boiler will vary from site to site, your
commissioning engineer has specialised equipment to check the oil pressure and analyse the exhaust gases for
temperature, smoke and carbon dioxide content.
Your installer will organise the commissioning of your boiler. Should you experience any difficulty locating an
engineer, our service department may be able to provide you with details of an engineer in your area.
“Benchmark” Installation, Commissioning and Service Record Log Book
Please ensure that your installer has completed all sections of the log book (found at the back of this manual).
The log book will be required in the event of any warranty work. Ensure that the service record is completed.
Warranty
Your HRM boiler is under warranty for 2 years from the date of installation.
Warranty Conditions
- The boiler must be installed and commissioned in accordance with our handbook
- The boiler must not be repaired, modified or tampered with by any person not authorised by HRM
Extended Warranty
The “Benchmark” and warranty registration document at the end of this manual should be completed as
appropriate by your installer / engineer. This is your record that the boiler has been correctly installed in accordance
with our recommendations. Return the warranty registration document to HRM in order to qualify for a further 3 year
warranty of the heat exchanger – a total of 5 years.
Extended Warranty Conditions
- The boiler must be serviced annually and maintained in accordance with this handbook. The
“Benchmark” service log is located at the back of this manual
- This warranty is in addition to your statutory and other legal rights
After Sales Service
- If your boiler fails during the warranty period contact your installer, who will be able to identify the
cause of the problem. If appropriate, your installer will contact us.
- Under no circumstances should “in warranty” work be undertaken without authorisation from the HRM
service department
- If you are unable to contact your installer please contact our service department. Quoting your boiler’s
serial number when phoning – this can be found on the cover of this manual.
3
Standard X-ternal & System X-
ternal
Handbook
Householder Information
IMPORTANT!
Your boiler must be commissioned in order to:
- Validate your warranty
- Ensure the boiler has been installed correctly and avoid premature failure
- Set the boiler to its optimum efficiency. Operating conditions for the boiler will vary from site to site, your
commissioning engineer has specialised equipment to check the oil pressure and analyse the exhaust gases for
temperature, smoke and carbon dioxide content.
Your installer will organise the commissioning of your boiler. Should you experience any difficulty locating an
engineer, our service department may be able to provide you with details of an engineer in your area.
“Benchmark” Installation, Commissioning and Service Record Log Book
Please ensure that your installer has completed all sections of the log book (found at the back of this manual).
The log book will be required in the event of any warranty work. Ensure that the service record is completed.
Warranty
Your HRM boiler is under warranty for 2 years from the date of installation.
Warranty Conditions
- The boiler must be installed and commissioned in accordance with our handbook
- The boiler must not be repaired, modified or tampered with by any person not authorised by HRM
Extended Warranty
The “Benchmark” and warranty registration document at the end of this manual should be completed as
appropriate by your installer / engineer. This is your record that the boiler has been correctly installed in accordance
with our recommendations. Return the warranty registration document to HRM in order to qualify for a further 3 year
warranty of the heat exchanger – a total of 5 years.
Extended Warranty Conditions
- The boiler must be serviced annually and maintained in accordance with this handbook. The
“Benchmark” service log is located at the back of this manual
- This warranty is in addition to your statutory and other legal rights
After Sales Service
- If your boiler fails during the warranty period contact your installer, who will be able to identify the
cause of the problem. If appropriate, your installer will contact us.
- Under no circumstances should “in warranty” work be undertaken without authorisation from the HRM
service department
- If you are unable to contact your installer please contact our service department. Quoting your boiler’s
serial number when phoning – this can be found on the cover of this manual.
3
Standard X-ternal & System X-ternal
Handbook
Householder Information
IMPORTANT!
Your boiler must be commissioned in order to:
- Validate your warranty
- Ensure the boiler has been installed correctly and avoid premature failure
- Set the boiler to its optimum efficiency. Operating conditions for the boiler will vary from site to site, your
commissioning engineer has specialised equipment to check the oil pressure and analyse the exhaust gases for
temperature, smoke and carbon dioxide content.
Your installer will organise the commissioning of your boiler. Should you experience any difficulty locating an
engineer, our service department may be able to provide you with details of an engineer in your area.
“Benchmark” Installation, Commissioning and Service Record Log Book
Please ensure that your installer has completed all sections of the log book (found at the back of this manual).
The log book will be required in the event of any warranty work. Ensure that the service record is completed.
Warranty
Your HRM boiler is under warranty for 2 years from the date of installation.
Warranty Conditions
- The boiler must be installed and commissioned in accordance with our handbook
- The boiler must not be repaired, modified or tampered with by any person not authorised by HRM
Extended Warranty
The “Benchmark” and warranty registration document at the end of this manual should be completed as
appropriate by your installer / engineer. This is your record that the boiler has been correctly installed in accordance
with our recommendations. Return the warranty registration document to HRM in order to qualify for a further 3 year
warranty of the heat exchanger – a total of 5 years.
Extended Warranty Conditions
- The boiler must be serviced annually and maintained in accordance with this handbook. The
“Benchmark” service log is located at the back of this manual
- This warranty is in addition to your statutory and other legal rights
After Sales Service
- If your boiler fails during the warranty period contact your installer, who will be able to identify the
cause of the problem. If appropriate, your installer will contact us.
- Under no circumstances should “in warranty” work be undertaken without authorisation from the HRM
service department
- If you are unable to contact your installer please contact our service department. Quoting your boiler’s
serial number when phoning – this can be found on the cover of this manual.
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17
16
Installation Procedure Continued – Standard X-ternal
5. Top Baffle
Place the top baffle into the heat exchanger as shown.
6. Control Panel
Fit the control panel onto the wall plate with and secure screw
provided.
7. Thermostats
Place the thermostat phials into their pockets located at the top
of the heat exchanger.
IMPORTANT: Ensure the thermostat capillary tubes are
kept clear of any possible electrical contact on the control panel
8. Electrical Connections
A 20mm hole is provided in the wall plate for concealed cable
entry. Use round cable ducting to pass wires through the wall
cavity.
The earth bonding cable can be secured to the 5mm stud
provided on the wall plate, as shown.
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Standard X-ternal & System X-ternal
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Installation Procedure Continued –Standard X-ternal
Note: The power supply to the boiler should be fitted with a 5
amp fuse. The electrical supply to the boiler should be made via
a switched and fused spur located near the boiler, fitted with a 5
amp fuse.
A frost thermostat is fitted as standard to protect the boiler.
Where appropriate, an additional frost thermostat may be
required to protect the rest of the heating system.
9. Silencer Box
Slide the silencer box over the 4 mounting pins located on the heat
exchanger. Secure the silencer box to heat exchanger by
tightening the 4 supplied wing nuts and penny washers down onto
the mounting pins.
10. Burner
Fit the burner to the mounting flange on the silencer box. As you
can see in this picture the flue has been rotated around into its
operational position.
11. Connect The Fuel Line
Connect the fuel line from the burner, to the oil supply.
IMPORTANT: The X-ternal comes with a built in non-return
valve. No additional non return valve must be used. Should the
boiler be used in conjunction with a purpose designed
underground tank, the foot valve found inside such tanks must be
removed or at least rendered ineffective. A replaceable element
fuel filter must be fitted near the tank. The adjacent images show a
clear fuel line with built in filter which are no longer supplied as
standard, they are available separately (Part Number: BS099A)
Please refer to page 15 of this manual for oil tank installation
recommendations
18
Standard X-ternal & System X-ternal
Handbook