Connection Of Combustion Air Device (Vd2/Vd2A/Ct3 Only) - Viessmann VITOTRONIC 100 GC1 Installation And Service Instructions Manual

Installation

Connection of Combustion Air Device (VD2/VD2A/CT3 only)

66
D
Connection of the Combustion Air
Device Adaptor
1. Disconnect power to control and
burners.
2. Install Combustion Air Device
Adaptor,
Part No. 7134 563
on DIN Rail inside connection
enclosure (refer to installation
manual of Combustion Air Device
Adaptor).
3. Remove jumper between terminals
16 and 17.
4. Make connection as shown in the
diagram.
IMPORTANT
Wire BK2 must be connected to
terminal 16 and BK3 to terminal 17 -
DO NOT reverse.
A Combustion Air Device Adaptor
B DIN Rail in connection enclosure
Connection of the combustion air
blower to adaptor
Rated voltage: 120 VAC
Rating current: max 5 FLA
Recommended connection
wire size: AWG 14
Ensure that combustion air blower
device is suitable for this application.
For detailed instruction on adaptor
installation please refer to the adaptor's
installation manual.
1. Make connection as shown in the
diagram at left.
A Combustion Air Device Adaptor in
connection enclosure
B Combustion air blower motor
C Proving switch - "normally open"
rated for 120 VAC.
D Power supply, 120 VAC
¨ Safety instruction!
Provide disconnect means and
overcurrent protection as required by
local codes.