Supplied By www.heating spares.co Tel. 0161 620 6677
p) Re-assemble in reverse order; check integrity of the flow and
return pipe ‘O’ rings and fibre washers and replace as necessary.
Ensure that all joints and seals are correctly re-fitted.
42
q) Open the isolating cocks and vent air from the system using the
manual air vent. Re-pressurise the system as necessary and check for
water leaks.
9.9
PUMP (HEAD ONLY)
Refer to Figure 43
a) Ensure supply voltage is isolated.
b) Disconnect the electrical lead to the pump head.
c) Drain down the appliance; refer to section 9.23.
d) Using a long Allen key unscrew the four screws holding the
pump head; refer to Figure 42.
e) Remove the pump head, and fit replacement pump head, using
a new ‘O’ ring seal.
f) Re-assemble in reverse order; ensure that all joints and seals are
correctly re-fitted.
g) Open the isolating cocks and vent air from the system using the
manual air vent. Re-pressurise the system as necessary and check for
water leaks.
43
Note: It is likely that there will still be some water
spillage when the head is removed.
Refer to Figure 44
a) Ensure supply voltage is isolated.
b) Disconnect the electrical lead to the diverter valve motorised head.
c) Unscrew the locating screw; refer to Figure 44.
d) Unclip the diverter valve motorised head and slide it down to
disengage it from the hydroblock body.
e) Fit the replacement diverter valve motorised head.
f) Re-assemble in reverse order; ensure that all joints and seals are
correctly re-fitted.
9.10
DIVERTER VALVE MOTORISED HEAD
44
ELECTRICAL LEAD
LOCATING SCREW
PUSH CLIP
ELECTRICAL CONNECTOR
4
SCREWS
HEAT EXCHANGER
MOUNTING BRACKET
HEAT EXCHANGER
SADDLE RH.
SPARK GENERATOR
CONDENSATE FLOW TUBE
EXPANSION VESSEL
LINK PIPE
EXPANSION VESSEL
HEAT EXCHANGER
SADDLE LH.
UPPER EXPANSION
VESSEL BRACKET
LOWER EXPANSION
VESSEL SUPPORT
LINK PIPE CLIP
35
MANUAL AIR VENT
751094 ACE HE INST MANUAL:751094 ACE HE 28/9/10 09:46 Page 37
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