Installation manual

Installation and servicing instructions strictly reserved for qualified gas installers
49
Legend
1 Heat exchanger retaining screws
2 Gasket
3 Viewing window gasket
4 Viewing window circlip
5 Gasket
6 Ignition and controle electrode gasket
7 Ignition and controle electrode
8 Ignition and controle electrode
connector
9 Ignition and controle electrode
retaining screws
10 Ignition module harness connector
11 Ignition module retaining screws
12 Fan connector
13 Mixing arm
14 Heat exchanger hanging brackets
15 Burner assembly retaining screws
16 Insulation
17 Heat exchanger retaining nuts
18 Spring leaf
19 Viewing window
20 Heat exchanger hydraulic coupling
21 Gasket
22 Ignition module
23 Mixing arm retaining screws
24 Gasket
25 Gas valve connector retaining screw
26 Gas valve connector retaining plate
27 Burner retaining screws
28 Gas valve connector
29 Gas valve retaining clip
30 Burner
31 Heat exchanger
32 Combustion chamber
33 Fan
34 Fan retaining screws
35 Gas valve
15.2.1 Mixing arm
Remove the 2 mixing arm retaining
screws (23) bolted on the fan (33) and
the burner door
.
Remove the mixing arm (13).
Fit the new mixing arm and the new
gaskets in the reverse order
.
15.2.2 Burner
Remove the mixing arm (13).
Remove the 5 heat exchanger retaining
nuts (17).
Remove the burner retaining screws
(27) and remove the burner (30).
Fit the new burner and the new gasket
in the reverse order
.
15.2.3 Heat exchanger
Remove the 2 mixing arm retaining
screws (23) bolted on the fan (33).
Remove the 5 heat exchanger retaining
nuts (17).
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Remove the “burner + mixing arm” unit
of the heat exchanger
.
Remove the heat exchanger retaining
screws (1) and relieve the heat
exchanger retaining plates (14).
Relieve the 2 heat exchanger hydraulic
coupling (20).
W
arning: There will be water in the heat
exchanger (31).
Remove condense pipe connector from
bottom of heat exchanger
.
Carefully remove the heat exchanger
(31) out.
Fit the new heat exchanger in the
reverse order
.
15.2.4 Gas valve
Relieve the gas valve retaining clip
(29).
Relieve the 4 gas nozzle retaining
screws located under the gas valve
(35).
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