
41
SER VICING
combination boiler -
Installation and Servicing
6 4 SAFETY RELIEF VALVE REPLACEMENT
1.
Refer to Frame 49.
2.
Remove the casing. Refer to Frame 41.
3.
Remove the expansion vessel and shield/air guide. Refer
to Frame 43.
4.
Drain the boiler. Refer to Frame 44.
5.
Remove the discharge pipe.
6 5 AUTOMATIC AIR VENT REPLACEMENT
1.
Refer to Frame 49.
2.
Remove the casing. Refer to Frame 41.
3.
Remove the expansion vessel and shield/air
guide. Refer to Frame 43.
3.
Drain the boiler. Refer to Frame 44.
4.
For
europa 24
:
Unscrew the air vent from the CH return
assembly and remove it.
For
europa 28
:
Pull out the air vent clip from the CH return
assembly and pull up the air vent head.
5.
Fit the new air vent, and re-assemble in
reverse order.
6.
Refill the boiler. Refer to Frames 4 and 28.
IMPORTANT.
Ensure that the vent cap is loose (A).
6.
Unscrews the safety relief valve nut and remove it.
7.
Fit the new safety valve and re-assemble in reverse order.
8.
Reconnect the discharge pipe, using new seals if
necessary.
9.
Refill the boiler. Refer to Frames 4 and 28.
4
4
(A)
(A)
7
4
5
6
europa 24
europa 28
SER
VICING