Service and Spares
Greenstar Danesmoor External
ErP+
and External System
ErP+
6720821725 (2018/04) 35
7.2 Clean the appliance
7.2.1 Cleaning the flue manifold and secondary heat exchanger
Refer to figures 60.
▶ Release screws [1] to remove the flue manifold access cover [2] and
clear any debris.
▶ Check the flue system and clean if necessary. Leaks can be detected
through the appearance of condensate runoff traces on the outside
of the flue.
▶Check:
– the inside of the outlet with a torch.
– the connection to the flue manifold assembly.
– the end of the outlet and any joints.
▶ Remove the baffle retainer [3] and baffles [4] from the secondary
heat exchanger.
▶ Check and clean the secondary heat exchanger surfaces.
▶ Clean the burner air inlet tube, if necessary.
Check the condensate route [5] is clear.
▶ The condensate trap [7] should be removed and cleaned.
▶ Release the pipe locking tab [8] and disconnect the flexible pipe [9]
from the top of the trap and move the flexible pipe up away from the
trap.
▶ Release the trap locking tab [10] and move the trap up and back to
remove from its mountings.
▶ Clean the trap by flushing with water.
▶ Check the O ring seals and replace if necessary, grease the seals with
a solvent free grease.
▶ Refit the trap making sure that the locking tabs are locked in place.
▶ Pour 500 ml of water into drain [5] to refill the condensate trap and
check that the condensate discharge pipe is discharging.
▶ Clean the secondary heat exchanger baffles [4] if necessary and refit
correctly.
▶ Refit the baffle retainer [3].
▶ Check the seal on the manifold access cover [6] and replace if
necessary.
▶ Refit the flue manifold access cover [2] and secure with screws [1].
Fig. 60 Secondary heat exchanger and condensate trap detail
7.2.2 Combustion chamber baffle check
Refer to figure 61
▶ Release retaining nuts and washers [3] and remove combustion
chamber access door [1].
▶ After cleaning ensure that the one piece baffle set [2] is in the right
location, correctly resting on the baffle rests [4] on either side of the
combustion chamber and pushed securely into place.
Baffle sets for the 18/25 and 25/32 boilers are identified with tabs
on the front and rear edge.
Fig. 61 Primary heat exchanger baffle check
▶ Secure baffle/combustion chamber access door [1] with nuts and
washers [3]. Tighten until door is firmly secured. Do not overtighten
the nuts.
Do not use wire brushes or cleaning agents to clean the
stainless steel secondary heat exchanger components.
6720821683-19.1Wo
9
7
8
10
6
2
3
4
5
1
6720813344-01.1Wo
12/18 Baffle
18/25 & 25/32 Baffle
2
4
2
3
1
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