Main 18 HE A Kullanıcı Kılavuzu - Sayfa 7

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Fig. 4

Fig. 5

Fig. 6

bar

Normal Pressure

bar

Requires

Repressurising

bar

Fault

4.0 Repressurising System

4.1

Central Heating System Pressure

1. The normal operating water pressure is between 1

and 2.5 bar (Fig. 4). If the pressure exceeds 3 bar the

safety pressure valve will operate and a fault is indicated

(Fig. 6). Contact your installer.

2. It may be necessary to repressurise the system

occasionally (Fig. 5). A filling device (the filling loop) will

be fitted on the system.

3. If you are unsure of its position, or cannot identify it,

consult the installer who fitted the boiler.

4. The filling loop will probably consist of two taps and a

separate metal braided hose with connection fittings.

5. Only when repressurising should the hose be

connected between the two taps. Ensure that the nuts

on the pipe ends are tightened onto the taps.

6. Fully open one of the taps first, and then while

watching the pressure gauge, carefully open the second

tap.

7. When the needle on the gauge is indicating 1 or more

turn both taps off.

8. Disconnect the metal braided hose from the taps (a

small amount of water may be present) and remove it.

Keep the hose in a safe place for future use.