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251934-YTG-J-0910
Johnson Controls Unitary Products 93
ZJ/ZR/ZF180-300 Wiring Diagrams
ZJ180-300 Typical Control Diagram
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
2
4
Second stage heating not required on single stage heating units.
Jumper is required if there is no Smoke Detector circuit.
Jumper is required for any combination of R, RC, or RH.
5
5
OCC is an output from the thermostat to indicate the Occupied condition.
X is an input to the thermostat to display Error Status conditions.
Y3
Y4
3
W2
Y1
G
OCC
P
P1
Y2
X
R
SD
C
EXPANSION
BOARD
TERMINAL
BLOCK
W1
Y3
Y4
2
C
SD
SD
R
Jumper
Smoke
Detector
24 VAC
Class 2