Checking The Gas Type - Viessmann VITOPEND 100-W Installation And Service Instructions Manual

Further details regarding the individual steps
4. If the control unit had already been
switched ON before filling began:
Turn both rotary selectors simul-
taneously counterclockwise to
the end stop.
Switch the ON/OFF switch on the
control unit first OFF and then
ON again after 3 s.
Turn rotary selector "tw"
approx. 3 s into the control range
and then back again.
The servomotor of the diverter
valve goes into its centre position.
Note
The pump runs for approx. 10 min.

Checking the gas type

In the delivered condition, the
Vitopend 100-W is set up for natural
gas E.
The boiler can be operated in the
Wobbe index range 12.0 to 16.1 kWh/
3
m (43.2 to 58.0 MJ/m
Commissioning, inspection, maintenance
5. After the system has been fully
6. Close boiler fill & drain valve A.
7. Close the shut-off valves on the
1. Check the gas type and Wobbe
3
).
(cont.)
filled and vented, switch OFF the
ON/OFF switch at the control unit.
heating water side.
index (W ) with your gas supply uti-
s
lity or LPG supplier and compare
them with the details on the burner
label.
15