Baxi Combi 130 HE Installation And Servicing Instructions page 32

Burner
Injector Pipe
Fan
Protection
Sensor
Leads
Wing Nuts
Electrical Supply
Fig. 53
Central Insulation
Panel
Burner
Combustion
Box Base
Heat Exchanger
Support Bracket
Combustion Box Base
Burner Securing
Securing Screws
Screws
Fig. 55
32
Supplied By www.heating spares.co Tel. 0161 620 6677
Securing Nut
Sensor
Leads
Condensate
Trap
Locking Nut
Condensate
Drain Pipe
Fig. 54
12.0 Servicing the Boiler
12.1 Annual Servicing (Cont)
NOTE: The information shown on the display
is explained on the label on the inside of the
lower door panel (see Fig. 48).
12. To clean the heat exchanger and burner
proceed as follows:
a) Disconnect the electrical leads to the fan
component protection sensor (Fig. 53).
b) Undo the two wing nuts to disconnect the fan
(Fig. 53).
c) Remove the fan and disconnect the electrical
supply to it (Fig. 53).
d) Remove the gas injector pipe from the gas
valve (push-fit) (Fig. 53).
e) Undo the condensate trap securing nut, lock
nut and the condensate drain pipe. Remove the
condensate trap and disconnect the sensor
leads (Fig. 54).
f) Remove the two screws securing the burner
and remove the burner. Visually inspect the
internal burner baffle for obstruction (Fig. 55).
NOTE: The burner skin is fragile - handle with
care. Clean and if necessary replace the
burner (Fig. 55).
g) Loosen the two screws retaining the heat
exchanger support bracket and slide to the left to
remove (Fig. 55).
h) Remove the four screws securing the heat
exchanger/combustion box base and withdraw
the base.
i) Lower the central insulation panels and check
condition (Fig. 55). Replace the insulation pads if
necessary.
j) Ensure the heat exchanger fins are clear of
any obstruction, use a thin bladed tool to remove
debris. The use of a torch at the heat exchanger
top and a mirror held under the heat exchanger
will aid observation of the heat exchanger fins.
k) Check condition of all seals.
l) Reassemble in reverse order, applying a
suitable silicon based grease to "O" rings and
seals - Greasil 4000 (Approved Silicone Grease).
12. Complete the relevant section of the
"Benchmark" Installation, Commissioning and
Service Record Log Book and hand it back to the
user.