Checking The Electrical Connections; Checking The Gas Type - Viessmann Vitocrossal CRU 800 Service Instructions For Contractors

Checking the electrical connections

Check all electrical connections for firm seating.

Checking the gas type

1. Check with your gas supply utility regarding the
gas type and Wobbe index W
1013.25 mbar).
The boiler can be operated in the following Wobbe
index ranges:
■ With natural gas E:
Wobbe index range 12.0 to 16.1 kWh/m
3
58.0 MJ/m )
■ With natural gas LL:
Wobbe index range 10.0 to 13.1 kWh/m
47.2 MJ/m 3 )
With control cables also check:
■
■
2. In the delivered condition, the burner is set up for
(0 °C;
s
3. Record the gas type in the report on page 62.
3 (43.2 to
3 (36.0 to
Commissioning, inspection, maintenance
Connection and kink-free routing
Application and seating of retaining clips
natural gas E. If required, change the gas type set-
ting to natural gas LL: See chapter "Setting the gas
type", page 12
11