61
Removal of the heat exchanger
(see following illustration)
1. Take the humidifier out of operation, as described in chapter 7.4.
2. Disconnect the gas supply pipe from the connection on the humidifier and close off the pipe.
3. Undo the brackets and open the right side panel(s).
4. Dismount flue gas pipe extension at the connection of the flue gas manifold.
5. Free all cable connections to the components (combustion blower, ignition module, air pressure
switch, etc.) of the respective heat exchanger.
Important! Note the connector assignment.
6. Undo the coupling of the respective flexible gas pipe and remove the flexible gas pipe.
7. Dismount the burner with the air blower and the gas pressure regulating valve of the respective
heat exchanger.
8. Unscrew the nuts and remove the flue gas manifold from the heat exchanger.
9. Unscrew the nuts on the heat exchanger and pull out the heat exchanger from the tank.
Reinstallation is carried out in the reverse sequence. Replace all seals with new ones. Make sure all
cables are connected correctly.
Caution – Danger of explosion! Following maintenance work on the gas system, a leakage
test must always be undertaken in accordance with chapter 5.5.2
.
Summary of Contents for GS 120 OC
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Page 69: ...69 Notes...
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