Filling The Heating System With Water And Venting The System; Filling The Trap With Water - Viessmann Vitocrossal CRU 800 Service Instructions For Contractors

Filling the heating system with water and venting the system

!
Please note
Unsuitable water quality can damage the boiler
body.
Only fill the boiler with water that complies with
the "Water quality requirements": See page 59

Filling the trap with water

A B
Fig. 1
Trap lower section
A
Condensate drain hose
B
1. Undo lower section of trap. Fill the lower section
with water.
Danger
If the trap is not full, flue gas can escape.
Escaping flue gas can cause life threatening
carbon monoxide poisoning.
Always fill the trap with water before com-
missioning.
Commissioning, inspection, maintenance
Enter the amount of fill water, water hardness and pH
value in the log on page 61.
2. Check that the condensate can drain freely.
3. Refit lower trap section.
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