Potterton Promax System HE Operation instructions

User’s Operating
Instructions
Please keep these instructions safe.
Should you move house, please hand
them over to the next occupier.
Promax System HE
Wall Mounted Powered Flue Condensing Boiler
Gas Fired Central Heating Unit

2
Natural Gas
Potterton Promax System HE
G.C.No41 590 69
The boiler meets the requirements of Statutory
Instrument “ The Boiler (Efficiency) Regulations
1993 No3083” and is deemed to meet the
requirements of Directive 92/42/EEC on the energy
efficiency requirements for new hot water boilers
fired with liquid or gaseous fuels:-
Type test for purpose of Regulation 5 certified by:
Notified Body 0086.
Product/Production certified by:
Notified Body 0086.
For GB/IE only.
Guarantee
Your Potterton Promax System HE is
designed and produced to meet all the
relevant Standards.
Potterton provide a 12 month
guarantee on the boiler. The guarantee
operates from the date installation is
completed for the customer who is the
original user.
To maximise the benefit from our
guarantee we urge you to return the
reply-paid guarantee registration.
This does not in any way prejudice your
rights at Common Law. Such rights
between the customer and the installer
or supplier from whom the unit was
purchased remain intact.
Any component or part which becomes
defective during the guarantee period
as a result of faulty workmanship or
material whilst in normal use will be
repaired or replaced free of charge.
B.S. Codes of Practice
Standard Scope
BS 6891 Gas Installation.
BS 5546 Installation of hot water supplies for
domestic purposes.
BS 5449 Part 1 Forced circulation hot water systems.
BS 6798 Installation of gas fired hot water boilers.
BS 5440 Part 1 Flues.
BS 5440 Part 2 Ventilation.
BS 7074 Expansion vessels and ancillary
equipment for sealed water systems.
BS 7593 Treatment of water in domestic hot water
central heating systems.
IMPORTANT - Care must be
exercised when lifting and handling
this product. Seek assistance where
appropriate and avoid stooping.
Protective equipment (e.g. gloves)
should be worn as necessary.

1.0 Warnings
3
1.1 Safe Installation
1. The installation must be carried out by a CORGI
Registered Installer or other registered competent
person and be in accordance with the relevant
requirements of the current GAS SAFETY
(Installation and Use) REGULATIONS, the BUILDING
REGULATIONS (Scotland)(Consolidation), the LOCAL
BUILDING REGULATIONS, the current I.E.E. WIRING
REGULATIONS and the bye laws of the LOCAL WATER
UNDERTAKING. Where no specific instruction is
given reference should be made to the relevant
BRITISH STANDARD CODES OF PRACTICE.
For Ireland install in accordance with IS 813
“INSTALLATION OF GAS APPLIANCES”. Reference
should also be made to BRITISH GAS GUIDANCE
NOTES FOR THE INSTALLATION OF DOMESTIC GAS
CONDENSING BOILERS.
2. This appliance must be installed in accordance
with the manufacturer’s instructions and the rules
in force, and only used in a suitably ventilated
location.
3. Read the instructions before installing or using
this appliance.
4. Any purpose provided ventilation should be
checked periodically to ensure that it is free from
obstruction.
IMPORTANT - The addition of anything that
may interfere with the normal operation of the
appliance without the express written
permission of Potterton could invalidate the
appliance warranty and infringe the GAS SAFETY
(Installation and Use) REGULATIONS.
1.2 In case of gas leaks
1. If a gas leak is found or suspected, turn off the
gas supply at the meter immediately and at the
isolating valve on the boiler if possible. Contact your
Installer or Transco (under 'Gas' in the phone
directory). Do not operate any electrical equipment
or light switches.
1.3 Servicing your Appliance
1. For reasons of safety and economy your appliance
should be serviced annually. Your Installer or British
Gas Service will be able to advise you.
1.4 Electricity Supply
1. THIS APPLIANCE MUST BE EARTHED.
2. A standard 230V ~ 50Hzsupply is required. The
appliance must be protected by a 3 amp fuse.
Never Hang any Items Over
The Appliance
“Benchmark”Installation, Commissioning and Service Record
Log Book
Please ensure that your installer has completed the Installation and
Commissioning sections of the Log Book and hands the Log Book over.
The details of the Log Book will be required in the event of any warranty
work. Keep the Log Book in a safe place and ensure that the relevant
sections are completed at each subsequent regular service visit.
All CORGI registered installers carry a CORGI identification card
and have a registration number. Both should be recorded in your
boiler Log Book. You can check your installer is registered by
telephoning 01256 372300 or writing to:-
1 Elmwood,
Chineham Business Park,
Crockford Lane,
Basingstoke.
RG24 8WG.

2.0 Operating the Boiler
4
2.1 Operating the Boiler
1. Hinge the lower door panel down (Fig. 1).
2. Turn on the main gas and electricity supplies to
the appliance.
3. Set the boiler thermostat control knob to the
required setting (Fig. 2). (The optimum boiler
setting depends upon type of system, external
controls and your requirements. Your installer will
be able to advise you on this matter.)
4. The fan will start to run and after a short period,
the ignition spark will commence. Sparking will
continue until the flame is established. Check that
both the Mains ON light and Boiler ON light are on.
Mains ON is indicated by green and Boiler ON by
yellow (Fig. 3).
5. Flashing Mains ON light indicates that there is a
mains electrical supply to the boiler, but the control
knob is in the OFF position. Turn the control knob
on and ignition will start.
2.2 To shut down the Boiler
1. Turn off the electricity supply to the appliance at
the mains.
2. Turn the boiler thermostat control knob to OFF
““(Fig. 2), then turn off the gas supply at the
appliance gas tap.
2.3 Frost Protection
1. The boiler does not have integral frost
protection. It is recommended that the installer fits
a suitable protection device to the system controls
if required. For frost protection the boiler must be
turned on.
2.4 Central Heating System Pressure
1. The water pressure in the central heating
system is indicated by the pressure gauge.
2. The normal operating pressure is the range
between 1 and 2·5 (Fig. 4).
3. A pressure of 3 or greater indicates a fault. The
safety pressure relief valve will operate, at a
pressure of 3 (Fig. 5). It is important that your
Service Engineer is contacted as soon as possible.
4. The MINIMUM pressure for correct operation
is 1. If the pressure falls below 1, this may indicate
a leak on the central heating system (Fig. 6).
5. The system must be re-pressurised by your
Service Engineer.
2.5 In Operation
1. The Promax System HE is a high efficiency
“condensing boiler”. In common with other
condensing boilers its exceptional efficiency means
the flue gases are cooled to such an extent that
steam is often visible at the outside flue terminal.
The amount produced depends on system design,
product use and outside air temperature but it is
not harmful to the individual or the working of the
appliance in any way.
Fig. 1
Fig. 2
12
3
0
12
3
0
12
3
0
Normal Pressure
Fig. 4
Fault
Fig. 5
Below Minimum
Fig. 6
Pressure Gauge
HIGH
LOW
Fig. 3
Boiler
Thermostat
Knob
Mains ON
(Green) Boiler ON
(Yellow)
Overheat or
Lockout
(Red)

3.0 Safety Devices
5
3.1 Operation of Safety Devices
1. Your Potterton Promax System HE is fitted with
safety devices which shut down the appliance if:
a) the system overheats.
b) the condensate drain is blocked.
c) there is no gas to the boiler.
2. The lockout indicator light will be either flashing
or permanently illuminated and the boiler will need
resetting (Fig. 7).
NOTE: In the case of persistent operation of
the devices, turn off the boiler and consult your
service engineer as an appliance or system
fault is indicated.
3.2 Resetting
TO RESET THE BOILER
1. Allow the boiler to cool if hot.
2. Hinge the lower door panel down (Fig. 8).
3. If the lockout indicator light is flashing once
a second, follow these instructions.
4. Turn the boiler thermostat control knob fully
anti-clockwise to the OFF position marked ““
(Fig. 9).
5. Wait 10 seconds and then turn the boiler
thermostat control knob clockwise to the required
thermostat setting. The overheat light will go out
and the boiler will fire up automatically when it has
cooled sufficiently.
6. If the lockout indicator light is permanently
illuminated, follow these instructions.
7. Check that the gas supply to the appliance has
not been inadvertently turned off.
8. Check the condensate drain outlet has not
been blocked.
WARNING: The condensate outlet must not be
blocked or modified.
9. Turn the boiler thermostat control knob fully
anti-clockwise to the OFF position marked ““
(Fig. 9).
10. Wait 10 seconds and then turn the boiler
thermostat control knob clockwise to the required
thermostat setting. The overheat or lockout light
will go out and the boiler will fire up automatically.
Fig. 8
HIGH
LOW
Overheat or
Lockout
(Red)
Fig. 7
HIGH
LOW
Fig. 9
Boiler
Thermostat
Knob

4.0 Clearances
6
4.1 Clearances around the Boiler
(Figs. 10 & 11)
1. The minimum clear spaces needed around
the boiler are:
Top - 200mm
Bottom - 200mm
Both sides - 5mm
Front - 500mm (For Servicing)
- 5mm (In Operation)
2. The boiler may be installed in an unventilated
cupboard or compartment if the following
minimum clearances are maintained:
Top - 200mm
Bottom - 200mm
Sides - 25mm
Front - 100mm
3. Any compartment should be large enough to
house the boiler only.
4. IT SHOULD NOT BE USED AS A STORAGE
CUPBOARD.
5. The gas burning compartment of your boiler is
completely sealed from the room in which it is
fitted. Products from the combustion of gas are
vented to the outside through the flue terminal
which must be kept free from obstruction as this
would interfere with the correct operation of the
boiler.
200mm
850mm
490mm
200mm
5mm Min
5mm Min
5mm
500mm
For Servicing
Purposes
Fig. 10
Fig. 11 In Operation
325mm

5.0 Cleaning, Spares & Guarantee
7
5.1 Cleaning the Outercase
The painted panels should be wiped with a damp
cloth and then dried completely. DO NOT USE
ABRASIVE CLEANING AGENTS.
5.2 Spare Parts
Repairs should be carried out by a CORGI
Registered Installer or other Registered Person
1. Any repairs to the boiler will usually be the
responsibility of the Installer during the
guarantee period after which spare parts may be
obtained through approved Potterton stockists if
required.
2. Quote the appliance name, model number
(found on the reverse of the lower door panel)
and where possible the part number when
ordering spares. A short parts list is included in
the Installation and Servicing Instructions.
5.3 Guarantee
1. Your Potterton Promax System HE is
designed and produced to meet all the relevant
Standards.
2. Potterton provide a 12 month guarantee on
the boiler. The guarantee operates from the date
installation is completed for the customer who is
the original user.
3. To maximise the benefit from our guarantee
we urge you to return the reply-paid guarantee
registration.
4. This does not in any way prejudice your rights
at Common Law. Such rights between the
customer and the installer or supplier from whom
the unit was purchased remain intact.
Any component or part which becomes
defective during the guarantee period as a
result of faulty workmanship or material
whilst in normal use will be repaired or
replaced free of charge.

Potterton, Baxi UK Limited, Brownedge Road, Bamber Bridge, Preston, Lancashire. PR5 6SN
After Sales Service 08706 096 096
www.baxi.com
Comp No5106704 - Iss A - 1/02