9
Since 1965
MicroMetl
Mixed Air Sensor
Field Mount on
Indoor Blower
1
9901-2021
HONEYWELL C7250
Dry Bulb
Outside Air
Sensor
12-Pin Female
Plug from Economizer
Economizer
Harness
In Unit
BLU
BLK
GRA
GRA
GRA
GRA
PNK
PNK
BLU
BLK
PNK
GRA
GRA
GRA
RED
PNK
ORG
BRN
YEL
VIO
VIO
VIO
ORG
ORG
BRN
BRN
6
7
2
3
10
11
5
1
12
9
4
8
RED
ORG
Economizer
Actuator
1
2
3
4
9901-2022
1
2
1
Enthalpy Outside
Air Sensor (C7400S)
To Optional
Power Exhaust
PL6
Plug
12-Pin Male
Plug in Unit
9962-0407-SAOEXT
Harness with
4-Pin Female Plug
4-Pin Male
Plug
10-Pin Male
Plug
PNK
BLU
BLK
GRA
GRA
RED
“R” ON CTB
ORG
BRN
YEL
“C” ON CTB
BLU
BLK
GRN / YEL
WHT
BLU
GRA
ORG
YEL
BLK
BRN
RED
VIO
1
1
2
2
3
3
4
10
6
4
5
9
1
3
8
2
7
1
2
3
4
5
6
7
8
9
10
4
9
3
8
10
2
6
7
5
1
4
10-Pin Female
Plug Disconnected
from CTB
CO2
(Optional)
Ground
“W1” on CTB
W7220 JADE
Controller.
Field Mounted in
Unit Control Box
MAT
MAT
OAT
OAT
ACT 24V
ACT COM
S-BUS
S-BUS
EXH1
IAQ COM
ACT 2-10
AUX1 OUT
IAQ 2-10
E-GRD
AUX2 IN
Y1 IN
Y1 OUT
Y2 OUT
Y2 IN
OCC
C
R
10-Pin Female
Plug Connects to
ECON on
Central Terminal
Board
BRN
YEL
Either the OAT or the Enthalpy
Sensor can be used but not both.
Refer to Figures 33 and 34 for Remote
Fault Detection and Diagnostic Monitoring.
LEGEND
3
4
Refer to Figure 31 for wiring optional
Differential Return Air Sensor kit.
On some models there is a separate
9962-0407-SAOEXT harness and on
other models these 4 wires are a part
of the standard harness attached to
Jade W7220 controller.
ECONOMIZER RETURN CHAMBER
INDOOR BLOWER SECTION
UNIT CONTROL BOX COMPARTMENT
DA
RA
OA
1 2 3
S-Bus
Temp & Humidity
HH57AC081
S-Bus
CTB: Central Terminal Board
MAT: Mixed Air Temperature Sensor
OAT: Outside Air Temperature Sensor
9901-2021
HONEYWELL C7250
4
Figure 23 – Typical Economizer Wiring Diagram for 1 or 2 Speed Units
(Not for 48/50LC 07-12 Units)
To Next Page
Loading...