Installation and operating instruction
Gas condensing unit WTC-GB 15-B Compact and WTC-GB 25-B Compact
9 Servicing
83309302 1/2018-05 La
120-196
9 Servicing
9.1 Condensing unit service
9.1.1 Notes on servicing
DANGER
Risk of explosion due to leaking gas
Improper service work can lead to escaping gas and explosion.
Close fuel shut off devices prior to starting work.
Care should be taken when dismantling and assembling gas carrying compon-
ents.
Close the screws on the test points ensuring the tests points are sealed.
DANGER
Risk of electric shock
Working on the device when voltage is applied can lead to electric shock.
Isolate the device from the power supply prior to starting any work.
Safeguard against accidental restart.
DANGER
Danger of poisoning by escaping flue gas
Flue gas can escape if the siphon is not filled. Inhalation leads to dizziness, nausea
and eventually death.
Check the fill level of the siphon at regular intervals and replenish if necessary, in
particular when the system has been shut down for longer periods or has been
operated at high return temperatures > 55 °C.
WARNING
Electric shock despite disconnection from the voltage supply
It is possible that electrical components continue to carry voltage and cause elec-
tric shock even after the voltage supply has been disconnected.
Wait approx. 5 minutes before commencing work.
Electric voltage has dissipated.
WARNING
Danger of getting burned on hot components
Hot components can lead to burns.
Allow components to cool.
Servicing must only be carried out by qualified personnel. The combustion plant
should be serviced annually. Depending on site conditions more frequent checks
may be required.
Components, which show increased wear and tear or whose design lifespan is or
will be exceeded prior to the next service should be replaced as a precaution
[ch. 9.1.2].
Weishaupt recommends a service contract is entered into to ensure regular in-
spections.
The following components must only be replaced and must not be repaired:
WEM-FA-G device electronics,
gas combi valve,
safety valve.