Manual 2100-702D
Page
14 of 29
IMPORTANT NOTE
An additional wire change is required if jumper 4 is used which connects "A" to "G" (shown on Figures 18 and
19 on pages 28 and 29). The red/white wire on the blower interlock relay (located on the vent control plate)
needs to be moved from the "common" terminal to the "normally closed" terminal.
If this change is not made,
the relay will latch on once the "A" signal is received and the blower will not turn off.
Refer to pages 28 and 29
to see the vent wiring diagram with this change called out.
FIGURE 12
Non-Programmable Thermostat Connections for Heat Pump with Economizer
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
Factory installed jumper. Remove jumper to activate Balanced Climate
™
Mode.
A 2-stage thermostat is recommended for Balanced Climate mode.
5 Do not add these wires if setting up for modulating control. See note 6.
7
Jumper needs added.
8
For 8403-058, change "system type", set up Function 1, From 5 (2 Heat/ 1 Cool heat Pump)
to 6 (2 Heat / 2 Cool Conventional). For 8403-059, No change required.
0-10 VDC Modulating CO2 control signal for modulating ventilation control
(Optional for ECON Only) - See vent installation manual.
6
For vent operation, add jumper if optional CO2 controller is not used.
Vent will run while blower is energized.
For ECON & CRV-V, an additional wire change is required.
See install manual
4
Factory installed jumper. Remove jumper and connect
to N.C fire alarm circuit if emergency shutdown required.
3
Wire not needed below 15KW.
2
Wire required for dehumidification models only.
1
9
6
10
12
11
9
4
12-Pin
Vent Plug
2
3
5
7
W
ALL VENT OPTIONS PLUG IN HERE
(TH522OD1151)
3
(TH522OD1219/U)
If not equipped with a ventilation option to plug in, a jumper plug must be installed.
8403-058
2
3
O/B
Rc
C
R
G
Y
Y2
AUX
4
E
5
6
Mechanical Humidistat
8403-038
Electronic Humidistat
4
1
Units With Dehumidification
or T6 Pro 8403-090
B
C
Rc
Y
R
G
O
8403-059
T4 Pro 8403-089
8403-047
6
5
8
7
MIS-4122
9