Matching The Burner Output To The Flue System - Viessmann Vitodens 100-W Installation Instructions Manual

Changing the gas type at the control unit
r r

Matching the burner output to the flue system

Installation and service instruc-
tions
6
1. Switch on the ON/OFF switch.
2. Turn both rotary selectors "tw" and
r
3. Turn rotary selector "tr" fully anti-
4. Change the control unit to natural gas
5. The set gas type is saved when the
(cont.)
"tr" simultaneously into their
respective central positions.
"SERV" appears on the display.
clockwise within 2 s .
"A" and the new selected value
flash on the display.
or LPG by turning rotary selector
"tw".
The display shows:
■ "0" for operation with natural gas
or
■ "1" for operation with LPG.
value stops flashing, and the control
unit returns to standard mode.