9
Fig. 23 — Typical EconoMi$er X Wiring Diagram for 1 or 2 Speed Units (Not for 48/50LC 07-12 Units)
Mixed Air
Sensor
Field Mount on
Indoor Blower
1
HH79AH001
HONEYWELL
C7250
Dry Bulb
Outside Air
Sensor
12-Pin Female
Plug from Economizer
Economizer
Harness
In Unit
50HE403859
Harness
GRN
GRN
WHT
BLK
GRN
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
GRN
GRN
6
7
2
3
10
11
5
1
12
9
4
8
RED
ORG
1
2
3
4
RED
Economizer
Actuator
1
2
3
4
HH57AC081
1
2
1
Enthalpy Outside
Air Sensor
T
o Optional
Power Exhaust
PL6
Plug
12-Pin Male
Plug in Unit
48TMHSRSE--A20
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
MA
T
MA
T
OA
T
OA
T
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 T
erminal
Board
BRN
YEL
Either the OA
T
or the Enthalpy
Sensor can be used but not both.
Remove OA
T
if Enthalpy’
s used.
Refer to Figures 33 and 34 for Remote
Fault Detection and Diagnostic Monitoring.
LEGEND
3
Refer to Figure 31 for wiring optional
Dif
ferential Return
Air Sensor kit.
ECONOMIZER RETURN CHAMBER
INDOOR BLOWER SECTION
UNIT CONTROL
BOX COMP
ARTMENT
DA
RA
OA
1
2
3
S-
Bu
s
T
emp & Humidit
y
HH57A
C081
S-
Bu
s
CTB: Central
T
erminal Board
MA
T
: Mixed
Air
T
emperature Sensor
OA
T
: Outside
Air
T
emperature Sensor
HH79AH001
HONEYWELL
C7250
