11
6
VENTILATION OF ROOM SEALED FANNED
FLUE (RSF) APPLIANCES
These appliances do not require air flow for combustion from the
room in which they are installed. Any cooling ventilation openings in
a wall or door must not be obstructed. Do not allow the flue terminal
fitted on the outside wall to become obstructed or damaged.
NOTE:
Do not place anything on top of the appliance. If the
appliance is fitted in a compartment do not use the compartment for
storage purposes unless it conforms to the requirements of
BS 6798:1987: Section 6. It is essential that the airing space is
separated from the boiler space by a perforated non-combustible
partition as described in BS 6798:1987.
The compartment must be ventilated in accordance with BS5440.
FLUE TERMINAL
Do not allow the flue terminal fitted on the outside wall to
become obstructed or damaged.
CIRCULATING PUMP
This may be fitted with a speed adjuster. If so it will be set by the
installer to suit the heating load. Do not alter the setting.
10
INDICATOR LIGHTS
Boiler demand :
System is calling for heat
Burner ON
:
Burner is firing
Lock-out
:
There is a fault condition
Steady light - Overheat
Flashing light - Flame failure
TO LIGHT THE APPLIANCE
Check that the water valves to the central heating circuit are open.
Check that the needle on the pressure gauge is not below the
required pressure - sealed system only.
Switch on the mains electricity. Set the room thermostat, if
fitted, to maximum. Turn the boiler temperature control knob fully
clockwise to the maximum position
.
The burner will light. Set the
boiler temperature control knob and the room thermostat/cylinder
thermostat, if fitted, to the desired temperature.
TO STOP THE APPLIANCE
For Short Periods
Turn the boiler temperature control knob fully anti-clockwise to
the
‘O’
position.
For Long Periods
Turn the boiler temperature control knob switch to the
‘O’
position. Switch off the mains electricity.
Any programmer will require resetting if mains supply has been
disconnected.
ELECTRICITY SUPPLY
FAIL
URE
If the electricity supply fails the appliance will not operate.
Once the supply is restored the appliance will return to normal
operation.
Check that the settings of any programmer or time control
have been maintained.
7
FROST PRECAUTIONS
If the appliance is not to be used for a long period of time and
there is a likelihood of freezing, then the appliance should be drained.
The Worcester Heat Systems Technical Helpline will advise you on
suitable frost precautions.
SERVICE
Annual servicing is important in order to ensure continuing
high efficiency and long life for your appliance. In the event of any
difficulty in making suitable servicing arrangements, Worcester Heat
Systems Limited or other competent persons will discuss regular
servicing arrangements and offer a comprehensive maintenance
contract.
WARNING
If a gas leak exists, or is suspected, turn off the gas supply to the
appliance at the service cock on the meter and consult your local
service engineer.
Do not touch any electrical switches to turn them either on or off.
Open all windows and doors. Do not smoke. Extinguish all naked lights.
CLEANING
Do not use abrasive cleaners on the outer casing. Use a damp
cloth and a little detergent.
APPLIANCE LOCKOUT
The appliance can be reset by turning the boiler temperature
control knob fully anti-clockwise and back. Check that the gas supply
has not been interrupted.
If this condition continues to occur, then call a service engineer.
TO LIGHT AND STOP THE
APPLIANCE
