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DIVERTER VALVE MOTORISED HEAD
9.11
Refer to Figure 46
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 46.
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.
HYDROBLOCK ASSEMBLY
9.12
Refer to Figure 47
a)
Ensure supply voltage is isolated.
b)
Disconnect the electrical leads to the pump head and diverter valve
motorised head.
c)
Drain down the appliance; refer to section 9.24.
d)
Remove the flow and return pipes from the heat exchanger; refer
to section 9.8.
e)
Remove the clip holding the hydroblock adaptor fitting in place, and
remove fitting.
f)
Remove the two clips holding the return pipes in place.
g)
Undo the nut connecting the CH return pipe to the CH return
isolating cock, and disengage the CH return pipe from the
hydroblock.
h)
On CBX appliances, undo the nut connecting the DHW return pipe
to the plate heat exchanger and disengage the DHW return pipe
from the hydroblock.
i)
On SBX appliances, undo the nut connecting the secondary return
pipe to the secondary return isolating cock and disengage the
secondary return pipe from the hydroblock.
j)
Remove the clip holding the flexible hose in place, and remove hose.
k)
Unscrew the three screws holding the hydroblock onto the mounting
studs, and remove the hydroblock.
l)
Align the replacement hydroblock against the mounting studs and
secure using the three screws.
m)
Re-assemble in reverse order; ensure that all joints and seals are
correctly re-fitted.
n)
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.
Note: It is likely that there will still be some water spillage when the
Hydroblock is removed.
46
DIVERTER VALVE MOTORISED HEAD
PUSH
CLIP
LOCATING SCREW
ELECTRICAL CONNECTOR
47
HYDROBLOCK ASSEMBLY
AUTO AIR VENT
SMALL OUTLET PLUG
LARGE OUTLET PLUG
PUMP ELECTRICS COVER
PUMP ELECTRICAL
CONNECTOR
CH RETURN PIPE
PUMP AIR BLEED SCREW
PUMP HEAD
LOCATING SCREW
DIVERTER
ELECTRICAL CONNECTOR
DIVERTER MOTOR
PRIMARY RETURN PIPE
PIPE ‘O’ RING
HYDROBLOCK MOUNTING POINT
SMALL PIPE CLIP
LARGE PIPE CLIP
EXPANSION VESSEL HOSE
PIPEWORK ADAPTOR
FIBRE WASHER
PRIMARY HEAT EXCHANGER
RETURN PIPE
37
751030 MANUAL (NEW) 21/9/10 08:41 Page 19
