47ecoTEC plus 937 installation and maintenance manual
7.2.3 Checking the burner
1
Fig. 7.4 Checking the burner
The burner (1) is maintenance-free and needs no
cleaning.
• Check the surface of the burner for damage. If
necessary, replace the burner.
• After checking or replacing the burner re-fit the
thermo-compact module as described in Section 7.2.4.
7.2.4 Fitting the thermo-compact module
1
Fig. 7.5 Replacing the burner door gasket
• Insert a new gasket (1) in the burner door.
a
Caution!
The burner door gasket (1) and the self-locking
nuts on the thermo-compact module must be
replaced every time the module is removed (e.g.
during maintenance, see Table 7.1). If the burner
flange insulation on the thermo-compact
module shows any signs of damage or is
showing small cracks it must also be replaced.
10
9
8
4
5
6
7
Fig. 7.6 Fitting the thermo-compact module
• Insert the compact thermo module (9) in the integral
condensation heat exchanger (10).
• Tighten the four nuts (4) alternately on the left and
right until the burner door closes securely and evenly
over the surface of the heat exchanger.
• Re-connect the ignition cable (5) and the earth
wire (6) to the ignition electrode.
• Connect the cable (8) to the fan motor and the
cable (7) to the gas fitting.
2
3
1
Fig. 7.7 Connecting the gas supply
Inspection and maintenance 7
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