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Non-Programmable Thermostat Connections for ECON-NC5 with Air Conditioners
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
3
Vent Plug
Factory installed jumper. Remove jumper and connect
1
to N.C fire alarm circuit if emergency shutdown required.
2A
Wire not needed below 15KW.
Install Jumper for 1 stage electric heat on units with more
2B
than 10KW.
Wire required for dehumidification models only.
3
For vent operation, add jumper if optional CO2 controller is not used.
4
Vent will run while blower is energized.
For ECON & CRV-V an additional wire change is required
See install Manual.
5 Do not add these wires if setting up for modulating control. See note 7.
Manual 2100-708A
Page
12 of 17
G
Y
W
O
B
G
Y
Y2
W
W2
2A
10
2B
G
Y1
Y2
W2
W3
B/W1
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 23
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
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