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Programmable Thermostat Connections for ECON-NC5 with Air Conditioners
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)
Manual 2100-708A
Page
10 of 17
FIGURE 21
Y1
Y2
O/B
W2
W1/E
2
Y1
Y2
O/B
W2
W1/E
2
7
Y1
Y2
W2
B/W1
W3
9
2
5
11
ALL VENT OPTIONS PLUG IN HERE
6
7
8
9
L
A
D
GND
3
4
L
A
YO/D
4
3
L
A
D
1
2
3
7
Change model configuration from heat pump to 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.
Install jumper for 1 stage electric heat on units with less than 15KW
Do not add these wires if setting up for modulating control. See note 7.
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
8
4
12
10
mode.
™
MIS-3974
A
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