Supplied By www.heating spares.co Tel. 0161 620 6677
30
7.2.6.1
To remove condensate trap (sect 5.4) Pull
forward the trap (Fig 90).
Unscrew the earth wire, and the sensor Replace
in reverse order
7.2.7
Examine the fan for any mechanical damage,
check to ensure free running of the fan wheel
Clean the wheel if necessary with a soft brush
Check sealing gasket and renew if damaged
(sect 7.6)
7.2.8
Examine fl ue duct and fl ue hood and ensure
that there is no obstruction Examine the
gasket at the entry into the fl ue duct
7.2.9
It is essential that a good seal is made at the
outlet to the fan, renew this gasket if there is
any sign of damage or deterioration
7.3
TO REMOVE/REPLACE THE CASING
(Fig.19,20 & 21)
7.3.1
Unscrew the 4 screws that fasten the lower
grating down the casing and remove it.
Remove the 4 screw that secure the top and
below of the casing. Carefully side forward
to lift off.
7.4
TO REMOVE/REPLACE THE
DEPRESSION CHAMBER COVER
7.4.1
Remove the front casing panel (sect 7.3)
7.4.2
Unscrew all the screws that fasten the cover
to the chamber body and put them into a
container so that they don’t get lost
7.4.3
Detach the cover, being careful not to damage
the seal
7.4.4
Reassemble in reverse order
Ensure good seal of cover when replacing
7.6
TO REMOVE/REPLACE THE FAN
ASSEMBLY (Fig. 54)
7.6.1
Remove front casing (sect 7.3).
Remove depression chamber front cover
as in (sect 7.4).
7.6.2
Disconnect the electrical connections from
the fan motor
7.6.4
Support the fan and remove the two fi xing
screws and bracket from the front of the fl ue
hood
Carefully withdraw from condensing heat
exchanger then from the appliance Place in
a safe place until required
Reassemble in reverse order Ensure wires
are connected correctly (Fig 94)
7.6.5.3
Remove the fan (sect.7.6)
7.6.5.4
Disconnect 2 unions for the heating water
pipelines (Fig.55) .
7.6.5.5
Disconnect condensing discharge pipe by
pulling off the pushfi t connector at top rear of
boiler (Fig 55)
7.6.5.6
Pull the heat exchanger down and slightly
forward until it comes out of the connection
from chamber (Fig.56).
7.6.5.7
Replace in reverse order.Taking care to refi t
discharge pipe at rear.
IMPORTANT:
When replacing heat exchanger
new seals must be used.
7.7
TO REMOVE/REPLACE THE FLUE HOOD
(Fig.57-58)
7.7.1
Remove front casing (sect 7.3)
Remove depression chamber front cover
as in (sect.7.4)
7.7.2
Remove the fan (sect 7.6)
7.7.2.1
Remove condensing heat exchanger
(sect.7.6.5).
7.7.3
Remove the three screws on the front that
fasten hood to the combustion chamber
7.7.4
Remove the two screws at the rear of hood.
7.7.6
Replace in reverse order.
7.8
TO REMOVE THE HEAT EXCHANGER
(Fig. 59-60)
7.8.1
Remove front casing (sect.7.3). Remove
depression chamber front cover as in
(sect. 7.4) .
7.8.4
Remove the fan (sect. 7.6)
.
7.8.5
Remove condensing heat exchanger
(sect 7.6.5).
7.8.6
Remove the fl ue hood (sect. 7.7).
7.6.5
TO REMOVE/REPLACE CONDENSING
HEAT EXCHANGER Fig. 55-56
7.6.5.1.
Remove front casing (sect. 7.3). Remove
depression chamber front cover as in
(sect.7.4).
Summary of Contents for HE Primary AAA
Page 16: ...Supplied By www heating spares co Tel 0161 620 6677 17 Fig 18...
Page 31: ...Supplied By www heating spares co Tel 0161 620 6677 Fig 58 32 Fig 56 Fig 57...
Page 33: ...Supplied By www heating spares co Tel 0161 620 6677 34 Fig 60 Fig 61 Fig 62 Fig 63...
Page 42: ...Supplied By www heating spares co Tel 0161 620 6677 section 10 EXPLODED PARTS DIAGRAM 43...
