Viessmann VITOTRONIC 300 GW2 Installation And Service Instructions Manual page 47

Connection of combustion air device
(continued)
Connection of the combustion air
damper
Note:
Assure that the combustion air
damper is suitable for this
application.
E
1. Disconnect power to control and
2. Make connection as shown in the
A Combustion Air Device Adaptor
B Relay 120 VAC coil - field
C Combustion air damper
D End switch rated for 120 VAC
E Power supply, 120 VAC
Note:
Spring return air dampers do not
require field supplied relay.
Installation
See damper manual for correct
installation.
burner.
diagram.
in connection enclosure
supplied
wired to "normally open"
terminal on device adaptor board
CAUTION
Provide disconnect means and
overcurrent protection as required
by local codes.
47