It may be necessary to repressurise the system occasionally (when the
water pressure falls below 0.7). A filling device (the filling loop) will be fitted
on the system. This will be on the boiler itself, or on pipework near to the
boiler.
400 series boilers are supplied with a temporary filling loop as shown.
For 200 series boilers seek advice from your installer.
Note
If the water pressure requires regular re-pressurising a fault or
leak is indicated. Seek advice from your installer.
The temporary filling loop consists of two isolating taps and a separate fill
ing pipe with connection fittings.
Only when repressurising should the filling pipe be connected between the
two taps. Ensure that the nuts on the pipe ends are tightened onto the
taps.
1. Fully open one of the taps first, and then while watching the pres
sure gauge, carefully open the second tap.
Note
The system pressure is shown at all times on the pressure gauge
and can be viewed on the display when there is power to the boil
er.
2. When the figures on the display or needle on the pressure gauge in
dicate between 1 and 1.5 bar turn both taps off.
3. Disconnect the filling pipe from the taps (a small amount of water
may be present) and remove it. Keep the pipe in a safe place for fu
ture use.
4. If blanking caps are available fit them to the taps.
Note
Go to the "How to videos" section of the "Advice" page at
www.baxi.co.uk for further details.
5. When the correct pressure is restored the boiler will reset automati
cally.
Fig.12 Water pressure
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