Worcester 18/25 Instruction Manual download pdf (Page 32)

COMMISSIONING

INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER BOSCH

STARTING THE APPLIANCE

8-716-106-256a (08.05)

IMPORTANT: Never run the appliance when

the appliance/system is unpressurised

(sealed systems) or empty.

Check the oil supply is correctly fitted and in

good working order before turning on the oil

supply valves to the boiler.

Turn on the main oil supply valve at the tank

and draw off at least 2½ litres of oil until a steady

flow of clear uncontaminated oil can be seen as

follows:

 Single pipe gravity feed systems:

Disconnect the flexible oil pipe and open

the isolating valve to discharge the oil into a

suitable container.

When completed, close the isolating valve,

reconnect the flexible oil pipe.

 Double pipe sub-gravity feed systems and

single pipe suction lift with de-aerator:

Air will be automatically vented when the boiler

is started up.

Prime the oil supply pipework to prevent

oil pump damage on single pipe systems with

a de-aerator using long oil pipe runs.

To prime a de-aerator, disconnect the flexible

oil inlet hose (nearest to the de-aerator) and

place in a container of the same fuel oil. Place

an empty container to collect oil from the oil

inlet pipe connection of the de-aerator. Prime

the de-aerator and reconnect the flexible oil

inlet hose.

Open the isolating valve and the oil pump

bleed valve (A) to discharge into a suitable

container once the boiler is started up.

Switch on the electricity supply to the boiler.

Set the programmer to ON.

Turn up the boiler Control thermostat.

Allow the burner to run through to 'lock-out'

indicated by the illumination of the lockout

indicator (E).

Wait 2 minutes then press the lockout reset

indicator (E).

Repeat the procedure at least 3 times or until

a steady stream of oil, without air, runs from the

bleed port, then relock bleed port (A).

Switch off the boiler.

Remove the oil pump filter, clean with kerosene

and refit.

The internal filter is accessed by removing the

oil pump cover on the Danfoss BFP 11 L3 and

Suntec AS47C.

Safely dispose of the container/discharge.

A - Bleed & pressure gauge port

B - Pressure adjustment

C - Vacuum gauge port

D - Retaining screws - cover

BURNER LOCKOUT:

DANFOSS

BFP 11 L3 OIL PUMP

SUNTEC

AS47C OIL PUMP

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Worcester 18/25 Instruction Manual Page 32

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