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M
21.2.2
OUNTING THE BURNER DOOR
IMPORTANT:
Before mounting the burner door, make sure that its
gaskets and insulation are in excellent shape.
If any signs of damage or ageing are present, these
parts must be replaced.
The burner door must be mounted back on the heat
exchanger as follows:
-
Place the burner door with its holes over the six
threaded studs. The unit must be tilted a little to
the right to get the fan motor past the water
pipe. Also mind the condensate hose.
Careful! When handling too rough or misplacing the
holes over the threaded studs, the burner door in-
sulation and/or gaskets can be damaged.
Ensure that the door is well positioned with re-
-
spect to the threaded studs, before pushing it
onto the exchanger.
-
Keep the burner door firmly in place by pushing
the gas/air premix manifold with one hand at
the middle at point A.
-
Hand tighten the flange nuts with the other
hand as far as possible onto the threaded studs.
Now the burner door is in place and the nuts can be
tightened with a torque wrench.
- Tighten the nuts in the order given in the picture.
The specified torque value for tightening the
burner door flange nuts is 8 Nm (70.8 inch lbs)
1
6
4
126
3
A
5
2
E93.1804.014
Tighten in given order.
torque value = 8 Nm
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