Figure 21 Non-Programmable Thermostat Connections - Bard W42AC-A Installation Instructions Manual

9
8403-057
R Rc C
(TH311OD1040)
or T4 Pro 8403-089
8403-058
(TH522OD1151)
R Rc C
8403-059
(TH522OD1219/U)
or T6 Pro 8403-090
7
Unit Low
R RT C
Voltage
Term. Strip
1
12-Pin 9 6
Vent Plug
Factory installed jumper. Remove jumper and connect
1
to N.C fire alarm circuit if emergency shutdown required.
Wire not needed below 15KW.
2A
Install Jumper for 1 stage electric heat on units with more
2B
than 10KW.
3 Wire required for dehumidification models only.
For vent operation, add jumper if optional CO2 controller is not used.
4
Vent will run while blower is energized.
5 Do not add these wires if setting up for modulating control. See note 7.
Manual 2100-692
Page 22 of 40
Non-Programmable Thermostat Connections
G Y W O B
G Y Y2 W
W2
2A
10
2B
G Y1 Y2 W2
W3
B/W1
3 2 5 11
ALL VENT OPTIONS PLUG IN HERE
If not equipped with a ventilation option to plug in, a jumper plug must be installed.
0-10 VDC Modulating CO2 control signal for modulating ventilation control
6
(Optional for ECON Only) - See vent installation manual.
For 8403-058, change "system type", set up Function 1, From 5 (2 Heat/ 1 Cool heat Pump)
7
to 6 (2 Heat / 2 Cool Conventional). For 8403-059, No change required.
8 Jumper needs added.
9 Thermostat will not work with units equipped with economizers.
Factory installed jumper. Remove jumper to activate Balanced Climate
10
A 2-stage thermostat is recommended for Balanced Climate mode.
FIGURE 21
6
3
L A D 1 2 3
4
7
Units With Dehumidification
8403-038
Mechanical Humidistat
8
8403-047
4
5 3
Electronic Humidistat
Optional CO2 Controller
Bard Part #8403-067
6
1
24VAC
2
3 CO2 OUT
4 TEMP-OUT
4 5 6
5
6
5
4 12 10
Mode.
™
MIS-3975 A