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Conditions: Gas valve assembly
–
Carry out a leak-tightness check, check the CO2
content and adjust this, if required.
Conditions: Venturi
–
Check the CO₂ content and adjust this, if re-
quired.
Conditions: Fan
–
Check the CO₂ content and adjust this, if re-
quired.
10.9.5 Replacing the heat exchanger
1.
Remove the adapter for the flue system.
2.
Remove the compact thermal module. (→ Page 34)
5
6
1
4
3.
Remove the clips (1).
4.
Loosen the flow (2) and return pipe (3).
5.
Remove the condensate discharge hose (4) from the
heat exchanger.
6.
Remove the rainwater drain hose (6) from the heat ex-
changer.
7.
Remove the plug (5).
0020261188_00 ecoTEC plus Installation and maintenance instructions
2
3
4
2
1
8.
Remove the screws (1) and (3).
9.
Remove the retainer for the heat exchanger (2) and (4).
10. Pull the heat exchanger downwards and to the right,
and remove it from the product.
11. Install the new heat exchanger in reverse order.
Caution.
Risk of poisoning due to escaping flue
gas.
Mineral-oil-based greases can damage the
seals.
▶
Instead of grease, use only water or com-
mercially available soft soap to aid install-
ation.
12. Replace the seals.
13. Insert the flow and return pipes into the heat exchanger
as far as they will go.
14. Ensure that the clips on the flow and return connection
have been attached correctly.
15. Install the compact thermal module. (→ Page 35)
16. Fill and purge the product and, if necessary, the heating
installation.
Troubleshooting 10
3
31
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