Figure - Bard Q-TEC Q30H2-A Installation Instructions Manual

REMOTE THERMOSTAT WIRING DIAGRAM
"X" THERMOSTAT OPTION WITH DEMAND VENTILATION
CO2 Controller
Part #8403-067
HOT
1
24 VAC
2
COM
3
Analog
Out
4
5
6
4
3
9
8
5
7
6
Thermostat
Bard Part #8403-084 Bard Part #8403-060
Factory installed jumper.
1
Mount relay in low voltage terminal block compartment.
2
3
Relay is field installed and required if demand ventilation
control does not supply blower "G" signal when ventilation
signal "O1" is supplied.
FIGURE 17B
Remote Thermostat Wiring Diagram
"X" Thermostat Option with Demand Ventilation
G
W1/E
L
A
Y1
O/B
W2
R
C
Thermostat
4
1 5 2
Relay
Part #8201-062
3 4
2 3
G
Orange
E Red/Yellow
L
O1
Brown/White
W1
Yellow
Y
B
W2
Red/White
R
C Black/White
W3
Low Voltage
Terminal Block
Jumper W2 to W3 at terminal block when
4
using 8403-084 with unit with 15 KW.
Plug #2
Orange
1
2
3
4
5
6
7
Blue
8
Brown
9
10
11
12
MIS-2688 C
Manual 2100-601E
Page 23 of 42