41
BOXER
combination boiler -
Installation and Servicing
SERVICING
64 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.
65 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 Fr
ame 43
.
3.
Drain the boiler. Refer to Frame 44.
4.
For
BOXER C 24
:
Unscrew the air vent from the CH return
assembly and remove it.
For
BOXER C 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
BOXER C 24
BOXER C 28
SER
VICING