Operating instructions

7
The water hardness may be determined using the standard test
paper or by reference to the local Water Company.
Further information may be obtained from Worcester Heat
Systems Technical Helpline.
AIR SUPPLY FOR OPEN FLUED (O.F.)
APPLIANCES
Your installer will have made arrangements for an adequate
supply of fresh air to the appliance. Fresh air is required for
combustion. Do not block up any air ways which may be let into a wall
or door. Do not hang clothes or other combustible materials over the
appliance or against the flue pipe.
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. In particular, the flue pipe should not pass
through an airing cupboard space unless protected by a guard (such as
wire mesh) concentrically spaced 13mm (
1
/
2
in), as described in BS 6798:1987.
VENTILATION OF BALANCED FLUED (BF)
AND ROOM SEALED FANNED FLUE (RSF)
APPLIANCES
These are room sealed appliances and any 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.
CIRCULATING PUMP
This may be fitted with a speed adjuster. If so it will be factory
set at maximum and should not be changed.
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. For short periods, the built-in frost
protection of the appliance will be adequate.
SERVICE
Annual servicing is important to ensure continuing high efficiency and
long life of your appliance. Suitable servicing arrangements should be made
with a competent third party. In the event of any difficulty in making
suitable service arrangements, Worcester Heat Systems Ltd. will be happy to
discuss regular servicing and offer a comprehensive maintenance contract.
IMPORTANT: Do not touch or adjust any sealed compontent.
WARNING
If a gas leak exists, or is suspected, turn off the gas supply to the
appliance at the service cock 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.