Technical data

Installation and maintenance instructions ecoTEC exclusive 0020017768_0538
8.3.2 Clean the heat exchanger
a
Caution!
Protect the electronics box turned down
against sprayed water.
1
2
3
4
Fig. 8.3 Clean the heat exchanger
• Remove the compact thermal module (see Section 8.3.1).
• Clean the pipes (3) of the heat exchanger (4) using
regular vinegar. Flush with water. The water flows out
of the heat exchanger through the water condense trap.
• After a soaking time of approx. 20 minutes, flush away
the dirt particles that have come loose with a powerful
water jet. Avoid pointing the water jet directly at the
insulating surface (2) on the back of the heat exchanger.
8.3.3 Checking the burner
1
Fig. 8.4 Checking burner
The burner (1) is maintenance-free and needs no cleaning.
• Check the burner surface for damage, replace the
burner if necessary.
• After checking/replacing the burner, dismantle the
compact thermo module as described in Section 8.3.4.
8.3.4 Installing the burner assembly
1
2
Fig. 8.5 Replacing silicone gaskets
• Insert the new graphite seals (1) in the burner flange.
a
Danger!
The two seals (1 - Fig. 8.5) on the burner assembly
(must be replaced each time the module is
removed (for example during maintenance).
The burner flange insulation (2 - Fig. 8.5) on
the compact thermal module (SP no. 21-0734)
may not show any signs of damage; otherwise
it must also be replaced.
5
4
3
2
1
6
Fig. 8.6 Installing compact thermal module
• Place the entire compact thermal module (5) onto the
integral condensation heat exchanger.
• Tighten the five nuts (2) across the diagonal until the
burner door fits closely and uniformly onto the mating
surfaces.
• Insert the ignition cable and the earth cable of the
ignition electrode (4).
8 Inspection and maintenance