Condensate Trap; Function; Check The Cleanness Of The Trap; Removal - Biasi Advance Plus 25C ERP Service Manual

21 CONDENSATE TRAP

21 .1 Function

The condensate trap "A" in Figure 21.1 and Figure 21.2 allows
the discharge of the condensate via the condensate drain pipe
avoiding in the mean time the escape of combustion products.
A plastic ball closes the trap outlet in case that the trap is empty.
A
Figure 21 .1
If the drain pipe becomes blocked, or condensate cannot drain,
the condensate level in the trap rises until it affects the flame
detection probe, this will cause the boiler lock-out.

21 .2 Check the cleanness of the trap

The condensate drain pipe "A" in Figure 21.2 does not require
any particular maintenance but just check:
1 That no solid deposits have formed, if so remove them.
2 That the condensate drain piping is not clogged.
To clean the inside of the siphon, remove it and turn it upside
down to remove any dirt (see section "21.3 Removal" on page
48).
- 48 -
CONDENSATE TRAP

21 .3 Removal

1 Remove the front and right case panels.
2 Disconnect the air manifold "B".
3 Using pliers, remove the spring "C" moving it to the left.
4 Remove the pipe "D" from the trap "A".
Figure 21 .2
5 Remove the trap "A", moving it upwards; from the grommet
"E".
6 Reassemble carrying out the removal operations in reverse
order.
Figure 21 .3
Warning: isolate the boiler from the mains electrici-
ty supply before removing any covering or compo-
nent .
D
C
A
A
B
E