Supplied By www.heating spares.co Tel. 0161 620 6677
Refer to Figures 44
a)
Ensure supply voltage is isolated, and that the gas supply is isolated.
b)
Remove the gas control valve, fan & burner assembly; refer to
section 6.2.
c)
Remove the heat exchanger: refer to section 9.8.
d)
Disconnect the condensate drainpipe sump adaptor from the heat
exchanger; refer to section 9.18.
e)
Remove the existing flue hood from the heat exchanger, two screws,
and fit the replacement flue hood onto the heat exchanger; use new
flue hood seals; refer to Figure 44.
f)
Fit the condensate drainpipe sump adaptor to the heat exchanger
and flue hood.
g)
Unscrew the flue sensor from the existing flue hood and fit onto the
new flue hood; refer to section 9.16.
h)
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.
j)
Disconnect the condensate drainpipe from the condensate drainpipe
sump adaptor; refer to section 9.18.
k)
Unscrew the three nuts holding the heat exchanger to the back
panel; refer to Figure 43.
l)
Remove the heat exchanger.
m)
Disconnect the condensate drainpipe sump adaptor from the heat
exchanger.
n)
Remove the flue hood from the heat exchanger, two screws, and fit
the flue hood onto the new heat exchanger, Check integrity of the
flue hood seals and replace as necessary. Remove the manual air
vent and vent tube from the heat exchanger and fit onto to new heat
exchanger; refer to Figure 43.
o)
Fit the condensate drainpipe sump adaptor to the heat exchanger
and flue hood.
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.
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.
Note: It is likely that the heat exchanger will still contain water.
i)
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
HEAT EXCHANGER
FIXING
POINTS
MANUAL AIR VENT
FLUE SENSOR
RETAINING
CLIP
FLUE HOOD
9.9
44
FLUE HOOD
FLUE SEAL
FLUE HOOD
GASKET
FIXING POINTS
CONDENSATE DRAIN
PUMP (HEAD ONLY)
9.10
Refer to Figure 45
a)
Ensure supply voltage is isolated.
b)
Disconnect the electrical lead to the pump head.
c)
Drain down the appliance; refer to section 9.24.
d)
Using a long Allen key unscrew the four screws holding the pump
head; refer to Figure 45.
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.
Note: It is likely that there will still be some water spillage when the
head is removed.
45
PUMP HEAD
ELECTRICAL
LEAD
4
SCREWS
36
751030 MANUAL (NEW) 21/9/10 08:41 Page 20
