Repressurising System - Potterton Gold Combi 24 User Manual

2
1
3
0 4
bar
Normal Pressure
Fig. 1
Blue Tap Handle
in Off Position
Remove Blanking Caps
Fig. 3a
Flanged Washers
Fit the Filling Loop Pipe
(ensure the flanged washers are fitted to
both ends of the filling loop pipe)
Fig. 3b
Blue Tap Handle
in Open Position
Filling Loop
Fig. 3c
6
© Baxi Heating UK Ltd 2015
Fig. 2
2
1
3
0 4
bar
Fault
Fig. 3
Pressure
Gauge
Blue Tap Handle
in Off Position
Boiler Taps & Connections, as
viewed from underneath
2
1
3
1. The water pressure in the central heating system is indicated
by the pressure gauge.
4
0
bar
2. With the system cold and the boiler not operating the
pressure should be at least 0.5 bar. During operation the
Requires
Repressurising
pressure should not exceed 2.5 bar, and will normally be
between 1.0 and 1.5 (Fig. 1).
3. A pressure of 3 or greater indicates a fault. The safety
pressure relief valve will operate, at a pressure of 3 (Fig. 3). It is
important that your Installer or Service Engineer is contacted
as soon as possible.
4. The minimum pressure for correct operation is 0.5. If the
pressure falls below 0.5, this may indicate a leak on the central
heating system (Fig. 2). Error Code E119 will be shown on the
display.
1. It may be necessary to repressurise the system occasionally
(when the water pressure falls below 0.5 bar). A filling device
(filling loop) will be fitted on the system. This will be on the
boiler itself if the device supplied with the boiler has been used,
or on pipework near to the boiler if another device has been
Filling Loop
used.
position
under boiler
2. If the water pressure requires regular re-pressurising a fault or
leak is indicated (see section 3.1). Seek advice from your
installer.
3. The filling loop supplied with the boiler consists of two blue
handled isolating taps and a separate temporary filling pipe with
connection fittings (Fig. 3b).
4. Looking underneath the right hand side of the boiler, ensure
the two blue handled isolating taps are in the OFF position.
Remove the Blanking Caps (Fig. 3a).
5. Fit the temporary Filling Loop Pipe, ensuring that the flanged
washers are fitted to both ends of the pipe (Fig. 3b). Tighten the
two wing nuts on the pipe to the taps.
6. Fully open one of the blue tap handles first, and then while
watching the pressure gauge, carefully open the second blue tap
handle (Fig. 3c).
7. When the needle on the pressure gauge indicates between 1
and 2 bar, turn both taps off.
8. The temporary filling loop pipe must be disconnected and
completely removed after the system is pressurised. (Ensure the
two blue handled isolating taps are in the OFF position before
Blue Tap Handle
disconnecting.) Keep the pipe in a safe place.
in Open Position
9. Refit and hand tighten the blanking caps previously removed
(Fig. 3a).
3.0 Repressurising the System
3.1 Central Heating System Pressure
3.2 To Re-Pressurise the System
(Using Temporary Filling Loop)