CENTURION
2.5
3.5
Wall-Mounted Fan-Assisted Gas-Fired
Instantaneous Combination Boiler
,
s .
InstructIons
Centurion WM 2.5&WM 3.5
G. C. No 47 13003
FOR NATURAL GAS ONLY
Part No PL35984
ISSUE 2
DATE March 1997
57030
INDEX
Gas safety (Installation and use Regulations 1994) 1
Gas leak warning 1
General Description 1
Method of operation 1
Gas Consumer Council 2
Boiler Clearances 2
Ventilation 2
Lighting the Boiler 2
Toturn off the Boiler 3
Operation of Controls 3
Central Heating Timer Operation 3
General Notes and Care of your system 5
Servicing and Maintenance 6
Cleaning 6
Spare Parts and Service 6
57030
GAS SAFETY (INSTALLATION AND USE)
REGULATIONS 1994.
It is the law that all gas appliances are installed by a CORGI
registered person, in accordance with the above regulations.
Failure to install appliances correctly could lead to
prosecution. It is in your own interests, and that of safety, to
ensure that the law is complied with.
WARNING
It is essential that the appliance is correctly earthed. An
electricity supply of 230V ~ 50 Hz is required fused at 3
Amp.
Manufacturers instructions must not be taken as overiding
either statutory or LocalAuthority Regulations.
If a gas leak is suspected or exists, turn the gas supply
OFF at the incoming mains (adjacent to the meter) and:
Do not operate any electrical appliance.
Do not operate any electrical switches.
Open all doors and windows.
Do not smoke.
Extinguish all naked lights.
Contact your gas supplier immediately.
READ THESE INSTRUCTIONS CAREFULLY BEFORE
ATTEMPTING TO OPERATE THE APPLIANCE.
IF A FAULT IS KNOWN OR SUSPECTED, DO NOT USE THIS
APPLIANCE UNTIL IT HAS BEEN REPAIRED BY A
COMPETENT PERSON
GENERAL DESCRIPTION
The Centurion WM 2.5 Is a wall mounted instantaneous
combination boiler with a fully automatic microprocessor based
control system and a fan assisted balanced flue. The appliance
has been designed for use on a sealed water central heating
system and is suitable for use with natural gas only.
The appliance provides central heating at outputs between 8.8
kW (30,100 Btu/h) and 22.0 kW (75,000 Btu/h). Hot water is
produced at outputs between 6.3 kW (21,600 Btu/h) and 27.7
kW (94,500 Btu/h).
Incorporated within the appliance are:
a User adjustable controls for domestic hot water and central
heating water temperature.
b A pump, expansion vessel, pressure gauge, overheat
thermostat and frost thermostat.
c A multi-directional concentric balanced flue
d A fully modulating gas control to ensure that precise output
is matched to demand.
e A two speed fan to maintain high operating efficiency at all
heat inputs.
Optional features include:
a An integral electronic timer for central heating operation.
b A WM SIB pack (fitted behind the appliance) to enhance
domestic hot water performance.
The boiler is fully automatic once switched on, and will supply
hot water whenever a hot tap is opened and central heating
whenever there is a demand for heat.
METHOD OF OPERATION
Note: If the optional timer is fitted this controls the operating
times of the central heating, domestic hot water is available
continuously.
The supply of domestic hot water always takes priority over
central heating. If a demand for hot water is required during a
central heating period, the boiler will automatically switch to
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