Connection Of Combustion Air Device (Cm2 Only) - Viessmann VITOTRONIC 100 GC1 Installation And Service Instructions Manual

Connection of Combustion Air Device (CM2 only)

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 the boiler junction
box (refer to installation manual of
Combustion Air Device
Adaptor).
3. Remove plug 150 from Vitotronic
control. Remove jumper between
the 2 'TR' terminals. Using 14 AWG
(field supplied) connect plug
D
terminals TR(Left), TR(Right) and
neutral to the DIN rail.
Neutral to Terminal 16
TR(Left) to Terminal 18
TR(Right) to Terminal 19
Re-install the 150 plug and DIN rail
connections as shown in the diagram.
IMPORTANT
Wire BK2 must be connected to
terminal 18 and BK3 to terminal 19 -
DO NOT reverse.
Installation
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.
67