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Programmable Thermostat Connections for ECON-NC5 with Heat Pumps
SC
SC
SC
Completestat
Model #CS9B-THO or
Model #CS9BE-THO
24V
G
COM
6
Thermostat
R
C
G
Bard #8403-060
Unit Low
R
RT
C
G
Voltage
Term. Strip
1
12-Pin
9
6
3
Vent Plug
If not equipped with a ventilation option to plug in, a jumper plug must be installed.
Factory installed jumper. Remove jumper and connect
1
to N.C fire alarm circuit if emergency shutdown required.
2
Wire not needed below 15KW.
Wire required for dehumidification models only.
3
4
Do not connect "A" from thermostat if optional CO2 controller is used
0-10 VDC modulating C02 control signal for modulating ventilation
5
control (optional for ECON only - see vent instruction manuals)
FIGURE 22
Y1
Y2
O/B
W2
W1/E
2
Y1
Y2
O/B
W2
W1/E
2
Y1
Y2
W2
W3
B/W1
8
2
5
11
ALL VENT OPTIONS PLUG IN HERE
6
7
8
L
A
D
GND
4
3
L
A
YO/D
4
3
L
A
D
1
2
3
7
Ensure model configuration is heat pump and not heat/cool. Must be configured to programmable
and fan set to be programmed fan for the "A" output to function during scheduled occupied
periods. Must be configured for multi-stage for Y1 output to be active 1st stage cooling. For
dehumidification, must be configured for "No Economizer" for YO/D to be active for humidity
control.
Do not add these wires if setting up for modulating control.
Factory installed jumper. Remove jumper to activate Balanced Climate
A 2-stage thermostat is recommended for Balanced Climate mode.
5
Optional CO2 Controller
Bard Part #8403-067
1
24VAC
2
3
CO2 OUT
4
TEMP-OUT
4
5
6
5
6
7
4
12
10
mode.
™
Manual 2100-708A
Page
MIS-4063 A
11 of 17
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