Weishaupt thermo condens WTC 15-A, Инструкция по установке и эксплуатации, Страница: 69 / 94

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10
Cleaning the heat exchanger Wärmetauscher
Flue gas side cleaning of the heat exchanger can be
carried out using the cleaning kit available as an accessory
(order No. 481 000 00 26 2).
Remove sediments through service opening, in particular
from condensate drain.
Clean siphon. To do this remove cover of cleaning opening
on the siphon.
Replacing seals and components
The following seals should be replaced during service:
•
Gas seal
• Service cover seal
Re-assembling following cleaning:
1. Refit cover of cleaning opening on siphone and
fill siphon with water (see Ch. 4.8).
2. Fit service cover with new seal and tighten the screws
to 4 Nm torque.
3. Install pre-mix burner, ensuring correct alignment on the
adjusting struts.
4. Check burner seal for damage prior to fitting the burner
cover. Fit burner cover to the stay bolts and tighten the
nuts to 4 Nm torque.
5. Connect the gas valve to the gas pipe and tighten the
union nut. Fit new gas seal (Order No. 441 076).
6. Reconnect the electrically connection to theappliance
and gas valve.
Concluding work
1. Open gas isolating valve.
2. Check soundness of gas connections and burner cover
opening.
3. Switch on the appliance.
4. Carry out soundnes test of all flue gas and condensate
carrying components.
5. Check O
2
content as per Ch. 5.2.