40
icos system condensing -
Installation and Servicing
SERVICING
67 SAFETY RELIEF VALVE REPLACEMENT
1.
Refer to Frame 51.
2.
Remove the casing bottom panel. Refer to Frame 43.
3.
Drain the boiler. Refer to Frame 69.
4.
Remove the discharge the pipe.
5.
Remove the 4 screws securing the rear support plate and
withdraw the plate.
Note.
The M4 and M5 screws fit the casing and pipe bracket
and the self tapping screw fits the plastic pump
68 AUTOMATIC AIR VENT REPLACEMENT
1.
Refer to Frame 51.
2.
Remove the boiler sealing panel. Refer to Frame 44.
3.
Drain the boiler. Refer to Frame 69.
4.
Unscrew the air vent from the extension pipe on the boiler
boss.
5.
Fit the new air vent, complete with 'O' ring provided, and re-
assemble in reverse order.
Note.
In the event that the extension pipe is removed at the
same time as the air vent, remove it from the air vent
and refit it into the heat exchanger, ensuring that its 'O'
ring seal is in place before fitting the new air vent.
IMPORTANT.
Ensure that the vent cap is loose (A).
housing.
6.
Withdraw the securing pin.
7.
Remove the safety valve.
8.
Fit the new safety valve and refit the securing pin.
9.
Re-assemble in reverse order ensuring correct location of
screws in support plate and that tabs on the pump and
valve housings engage in slots.
10.
Reconnect the discharge pipe.
11.
Check operation of the boiler. Refer to Frame 51.
Support plate
M4 screw
Ecl 2084
M4 screw
M5 screw
Self tapper
screw
Discharge pipe
Safety relief valve
Securing pin
Ecl 2091
Ecl 2098
Air vent
Vent cap (A)
SER
VICING
Содержание icos system m3080
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