Glowworm Xtramax HE User manual

www.high-efficiency.info
1
To be left with the user
Instructions for Use
002000****A.05.05
Glow-worm, Nottingham Road, Belper, Derbyshire. DE56 1JT
www.high-efficiency.info
High Efficiency Condensing Boilers
Xtramax HE

www.high-efficiency.info
2
WARNING
GAS LEAK OR FAULT
Turn off the gas emergency control valve immediately. Eliminate all sources of ignition, i.e.smoking,
blowlamps, hot air guns etc.Do not operate electrical lights or switches either on or off. Open all doors and
windows, ventilate the area.
SHEETMETAL PARTS
This boiler contains metal parts (components) and care should be taken when handling and cleaning, with
particular regard to edges.
SEALED COMPONENTS
Under no circumstances must the User interfere with or adjust sealed parts.
Customer service call: 01773 828100
Technical helpline: 01773 828300
General and Sales enquiries Tel: [phone] Fax: [phone]

www.high-efficiency.info
3
Xtramax HE

www.high-efficiency.info
4
Important Information page 5
Boiler Design page 6
Boiler Safety Devices page 7
Maintenance page 8
Boiler Operation page 9
User Controls - Display page 10
CONTENTS
The instructions are an integral part of the boiler and must, to comply with the current issue of the Gas Safety
(Installation and Use) Regulations, be handed to the user on completion of the installation.
Please read these instructions and follow them carefully for the safe and economical use of your boiler.

www.high-efficiency.info
5
Gas Safety (Installation and Use) Regulations
In your own interests and that of safety, it is the Law that ALL gas
appliances are installed by a competent person in accordance
with the current issue of the regulations.
Control of Substances Hazardous to Health
Under Section 6 of The Health and Safety at Work Act 1974, we
are required to provide information on substances hazardous to
health.
The adhesives and sealants used in this appliance are cured and
give no known hazard in this state.
Electrical Connection
The boiler MUST be earthed.
The boiler MUSTbe connected to a permanent 230V ac, 50Hz
supply.
Connection of the whole electrical system of the boiler, including
any heating controls, to the electrical supply must be through one
common isolator and must be fused 3 Amp maximum.
The colours of three core flexible cable are, blue - neutral, brown
- live, green and yellow - earth.
IMPORTANT NOTE
ALL electrical connections to the boiler
must be permenantly fixed to a wall or a
sturdy support feature.
Gas Category
This boiler is for use on G20 natural gas, but may be adjusted for
use on G31 propane.
Testing and Certification
This boiler certificated to the current issue of EN 483 for perform-
ance and safety.
It is important that no alteration is made to the boiler unless ap-
proved, in writing, by Glow-worm.
Any alteration not approved by Glow-worm, could invalidate the
certification, boiler warranty and may also infringe the current issue
of the statutory requirements.
CE Mark
This boiler meets the requirements of Statutory Instrument, No. 3083
The Boiler (Efficiency) Regulations, and therefore is deemed to meet
the requirements of Directive 92/42/EEC on the efficiency requirements
for new hot water boilers fired with liquid or gaseous fuels.
Type test for purposes of Regulation 5 certified by: Notified body
0087.
Product/production certified by: Notified body 0086.
The CE mark on this appliance shows compliance with:
1. Directive 90/396/EEC on the approximation of the laws of the
Member States relating to appliances burning gaseous fuels.
2. Directive 73/23/EEC on the harmonisation of the Laws of the
Member States relating to electrical equipment designed for use
within certain voltage limits.
3. Directive 89/336/EEC on the approximation of the Laws of the
Member States relating to electromagnetic compatibility.
Important Information

www.high-efficiency.info
6
Boiler Design
Description
Xtramax HE Model: The boiler is designed to provide central
heating and instantaneous hot water.
Once the controls are set the boiler operates automatically.
Compartment or Cupboard Installations
Ventilation is not required for compartment or cupboard
installations.
Do not use the compartment or cupboard for storage.
The minimum clearances to fixtures are shown in
diagram 1.
Pluming from flue terminal
Like all condensing boilers it will produce a plume of
condensation from the flue terminal in cool weather. This is
due to the high efficiency and hence low flue gas temperature
of the boiler. It is normal and not a fault indication.
Electrical Supply Failure Reset Switch
The boiler will not work without an electrical supply.
Normal operation of the boiler should resume when the
electrical supply is restored.
Reset any external controls, to resume normal operation of
the central heating.
If the boiler does not resume normal operation turn the mains
reset switch off and on. If the boiler does not resume normal
operation after this the overheat stat may have operated.
+ A removable compartment door can be placed
at least 5mm in front of the appliance
5
5
600 +
200
50
Diagram 1

www.high-efficiency.info
7
Boiler Safety Devices
Overheat Reset
The boiler software is designed to recognise the potential for
an overheat lockout and will shutdown before this happens.
To restart the boiler. Turn the mains reset switch 0, wait for
five seconds, turn mains reset switch to I, the boiler is reset,
see diagram 2.
If, however the boiler fails to resume normal operation and
all services and demands are calling for duty then call your
Installation/Servicing company.
Overheat Lockout
In the event of the boiler overheating the safety device will
shutdown the boiler. If this happens, call your Installation/
Servicing company.
Frost Protection
The boiler has a built in frost protection programme as long
as the electricity and gas are left switched on. This device
operates the burner and system pump when the temperature
in the heating circuit falls below 40C.
When the temperature inside the boiler rises to 70C the
burner will switch off and only the system pump will run, at
100C the pump will switch off as frost protection will no longer
be required.
NOTE: Any other exposed areas of the system should be
protected by a separate frost thermostat.
Condensate Drain Blockage
As a safety feature the boiler will stop working if the condensate
drain becomes blocked. During freezing conditions this may
be due to the forming of ice in the condense drain external
to the house. Release an ice blockage by the use of warm
cloths on the pipe. The boiler should then restart. Contact
your installation/servicing company if the fault persists.
Safety Discharge Valve
A safety discharge valve and discharge pipe is fitted to the
boiler. This valve MUST not be touched. If there is any
discharge from the pipe, switch off the boiler electrical supply,
then call your Installation/Servicing company.
Diagram 2

www.high-efficiency.info
8
Spare Parts
REMEMBER: When replacing a part on this boiler, use only
spare parts that you can be assured conform to the safety
and performance specification that we require. Do not use
reconditioned or copy parts that have not been clearly
authorised by Glow-worm.
If replacement parts are required contact Glow-worm’s own
service organisation using the telephone number on the inside
front cover of this booklet.
Please quote the name of the boiler, this infomation will be
on the name badge on the front case.
If in doubt seek advice from the local gas company or
Glow-worm’s own service organisation using the telephone
number on the inside front cover of this booklet.
Servicing
To ensure the continued efficient and safe operation of the
boiler it is recommended that it is checked and serviced at
regular intervals. The frequency of servicing will depend upon
the site conditions and usage, but in general, once a year
should be enough.
If this boiler is installed in a rented property in the UK there
is a duty of care imposed on the owner of the property by
the current issue of the Gas Safety (Installation and Use)
Regulations, Section 35.
Servicing/maintenance should be carried out by a
competent
person inaccordance with the rules in force in the countries
of destination.
To obtain service, please call your installer or Glow-worm’s
own service organisation using the telephone number on the
inside front cover of this booklet.
Cleaning
The boiler casing can be cleaned using a mild liquid detergent
with a damp cloth, then a dry cloth to polish.
Do not use any form of abrasive or solvent cleaner as you
may damage the paintwork.
Frost Protection
If the mains electricity and gas services are to be turned off for
any long periods during severe weather, it is recommended
that the whole system, including the boiler, should be drained
to avoid the risk of freezing.
Maintenance

www.high-efficiency.info
9
1. Check that all isolating valves are open, see diagram 5 and water flows from the hot water taps.
2. If you are in any doubt about the boiler being filled with water contact your installer or Glow-worm's own
service organisation using the telephone number on the inside front cover of this booklet.
Do not operate the boiler without water.
3. Check that the electrical supply to the boiler is ON and set any remote controls as required.
4. With the User controls in their "OFF" (0) positions, turn the Mains Reset Switch to the ON (1) position,
the running lamp will initially illuminate (green) then go off, the system pressure will be displayed and should read
on the digital display, at least 0.7bar (recommended 1.0bar), if less, pressurise as described in the Digital/Display
System Pressurisation section.
Digital Display/System Pressurisation
The digital display, see diagram 4, normally shows the operating temperature of the unit when there is a central heating demand
and gives a pressure reading when there is no demand or when the appliance is in the domestic hot water mode.
If the digital display shows pressure less than 0.7bar, re-pressurise the system to 1bar by gently opening the built in filling tap
underneath the boiler, see diagram 3. A tap extension tool is provided to facilitate this. Ensure the tap is closed. If the system
repeatedly looses pressure, YOU MUST CONTACT YOUR INSTALLER OR GLOW-WORM'S OWN SERVICE ORGANISATION
USING THE TELEPHONE NUMBER ON THE INSIDE FRONT COVER OF THIS BOOKLET.
If there is a fault, then a fault symbol displays and the control light on the control panel flashes red.
WARNING: Never try to service or repair the appliance by yourself and only start the appliance once a skilled professional has
repaired the fault.
Boiler Operation
Diagram 3 Diagram 5
Diagram 4
Tap Extension Tool
Filling Tap Isolating Valves
Shown Closed

www.high-efficiency.info
10
User Controls - Display
CENTRAL HEATING CONTROL
1. Turn the central heating water temperature control "ON", the lighting sequence will begin, the running lamp will
illuminate (green) to indicate the boiler has lit, the system temperature will now be displayed instead of
system pressure.
The temperature of the central heating water can be adjusted by turning the central heating water temperature
control to desired setting between 1 'Min' and
°C
bar
'Max'. Maximum setting is appoximately 82°C.
Set the control to '0' to switch off heating.
If the boiler fails to light, reset the controls, see paragraph below, TO RESET
If a fault occurs the running lamp will flash red and a fault code will appear on the digital display.
DOMESTIC HOT WATER CONTROL
2. Position 0 - hot water OFF. Turn hot water temperature control to maximum.
TO RESET
3. Turn the Mains Reset Switch to 0, wait for 5 seconds, turn Mains Reset Switch to 1, the boiler is reset.
If the fault persists contact your installer/service provider using the telephone number on the inside font cover of
this booklet.
TO TURN THE BOILER OFF
4. Turn the Mains Reset Switch to the OFF (0) position.
Turn the gas supply OFF at the gas service cock if the boiler is to be out of use for some time.

www.high-efficiency.info
11
User Controls - Display
9934
CONTROLS
FASCIA
MAINS
RESET
SWITCH
DIGITAL
DISPLAY
CONTROL
LIGHT
HOT WATER
TEMPERATURE
CONTROL
ECONOMY POSITION
APPROX 55O
MAXIMUM POSITION
APPROX 62O
CENTRAL HEATING
WATER TEMPERATURE
CONTROL
Diagram 6

www.high-efficiency.info
12
www.high-efficiency.info
Because of our constant endeavour for improvement, details may vary slightly from those shown in these instructions.