Worcester 28CDI Instrukcje Operacyjne Pobierz pdf (Strona 41)

CENTRAL HEATING SYSTEM

During the first few hours of operation of the central heating

system, check that all radiators are being heated at an even rate.

Should the upper area of a radiator be at a lower temperature than the

base of the radiator, it should be vented by releasing air through the

venting screw at the top of each radiator. Make sure your installer

shows you how to carry out the operation. Repeated venting will

reduce the quantity of water in the system and this must be

replenished for safe and satisfactory operation of the appliance.

Should water leaks be found in the system or excessive venting be

required from any radiator, your installer or heating engineer should

be contacted and the system corrected.

SEALED HEATING SYSTEM

The appliance can be fitted to a sealed heating

system which is pre-pressurised. In this case your

installer will advise you on the minimum and maximum

pressure that should be indicated on the pressure gauge.

See Fig. 2. Check regularly that this pressure is

maintained and contact your installer or maintenance

engineer if there is a permanent significant drop in

pressure indicated on the gauge. If the system loses

pressure it should be re-pressurised as instructed by the

installer (N.B. Maximum operating pressure 2.5 bar).

Re-pressurising The System (See Fig. 1a).

(If in doubt leave this procedure to your installer).

Remove the bottom panel to gain access to the

filling loop assembly.

Insert the bayonet end of the filling key into the

corresponding cut outs in the filling loop housing and

twist to lock the key in place.

Turn the grey knob anti-clockwise to allow water

ingress and fill until the required pressure is reached.

Turn the grey knob clockwise to stop filling and

remove the filling key by lining up the bayonet end of

the key with the cut outs in the filling loop housing and

withdrawing the key.

N.B. The key must always be removed from the

filling loop housing after the system has been filled to

prevent accidental filling and to comply with Bylaw 14

of the Water Bylaws Scheme.

Store the key in a safe place for future use and refit

the bottom panel.

OPEN VENTED HEATING SYSTEM

The appliance may be fitted to an open vented

heating system your installer will advise you. There is no

need to observe the pressure gauge.

GENERAL NOTES

Fig. 1a.

Grey

Knob

Filling Key

1 2 ... 36 37 38 39 40 41 42 43 44 45 46

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Worcester 28CDI Instrukcje Operacyjne Strona 41

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