Manual 2100-715B
Page
16 of 25
FIGURE 8
Non-Programmable Thermostat Connections
CO2 OUT
Optional CO2 Controller
Bard Part #8403-067
6
5
4
3
2
1
TEMP-OUT
24VAC
W3
6
5
4
2
1
R
Unit Low
Voltage
Term. Strip
W2
C
G
RT
Y1
Y2
B/W1
L
D
A
3
6
10
12
11
9
4
12-Pin
Vent Plug
2
3
5
7
For 8403-058, change "system type", set up Function 1, From 5 (2 Heat/ 1 Cool heat Pump)
mis-4073
Factory installed jumper. Remove jumper and connect
ALL VENT OPTIONS PLUG IN HERE
to 6 (2 Heat / 2 Cool Conventional). For 8403-059, No change required.
2
W
Rc
C
R
G
Y
Y2
W2
1
or T6 Pro 8403-090
(TH522OD1219/U)
8403-059
or T4 Pro 8403-089
W
C
Rc
Y
R
G
O
B
to N.C fire alarm circuit if emergency shutdown required.
If not equipped with a ventilation option to plug in, a jumper plug must be installed.
(TH311OD1040)
8403-057
(TH522OD1151)
8403-058
5
4
6
7
3 Do not add these wires if setting up for modulating control. See note 7.
Thermostat will not work with units equipped with economizers.
1
5
control (Optional for ECON Only) - See vent installation manual.
0-10 VDC Modulating CO2 control signal for modulating ventilation
4
Vent will run while blower is energized.
For vent operation, add jumper if optional CO2 controller is not used.
2
3
7
6
Factory installed jumper. Remove jumper to activate Balanced Climate
™
Mode.
A 2-stage thermostat is recommended for Balanced Climate mode.
(Jumper is removed in factory for units with economizers.)
