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5121817-TIM-A-0515
Johnson Controls Unitary Products
15
Typical Field Power and Control Wiring
Typical Power Wiring
Typical Reheat Control Wiring (Simplicity S E ZKT03 Thru T05)
Figure 13: Typical Field Power and Control Wiring
REFER TO THE ELECTRICAL DATA
TABLES TO SIZE THE DISCONNECT
SWITCH, OVERCURRENT PROTEC-
TION AND WIRING.
OCC
C
RC
G
Y2
Y1
W2
W1
X
R
THERMOSTAT
TERMINALS
CONTROL
TERMINAL
BLOCK
TERMINALS ON A
LIMITED NUMBER
OF THERMOSTATS
1
4
3
1
4
Second stage
ŚĞĂƟŶŐŶ
ot required on single stage he
ĂƟŶ
g units.
Jumper is required for any co
ŵďŝŶĂƟŽŶ
of R, RC, or RH.
5
5
OCC is an output from the thermostat to indicate the Occupied
ĐŽŶĚŝƟ
on.
X is an input to the thermostat to display Error Status condi
Ɵ
ons.
3
W2
Y1
G
OCC
Y2
X
R
SD-24
C
W1
24V
COM
OUT
Return or Space Humidity
Sensor (0-10VDC)
TB 1
823/R
-
+
+
RAH
DCT
PRS
-
P4
1)
2)
3)
4)
825/W
824/BK
S4
24V
C
24 VAC
Class 2
SD-24
Jumper Located on Harness
Smoke
Detector
SD-R
24V Output
R
(If No Smoke Detector)
(If Smoke Detector Is Used)
2
Jumper is required if there is no Smoke Detector circuit.
2