Zr180-300 Typical Control Diagram - York ZJ R-410A Technical Manual

251934-YTG-G-0708

ZR180-300 Typical Control Diagram

THERMOSTAT
TERMINALS
RC
RH
Y1
Y2
W1
W2
G
C
X1
X3
X4
A1
A2
T
T
1
Electronic programmable Thermostat 2ET0770010024
( includes subbase).
2
Terminals A1 and A2 provide a relay output to close the
outdoor economizer dampers when the thermostat
switches to the set-back position.
3
Dehumidistat closes on rise in humidity.
TYPICAL
THERMOSTAT
RC
RH
Y1
Y2
G
W1
W2
C
1
Dehumidistat closes on rise in humidity.
94
1
2
TO REMOTE SENSOR
2ET04701324 IF USED
R
Y1
Y2
G
CONTROL
W1
W2
OCC
C
( RCB )
REHEAT
CONTROL BOARD
R
Y1
Y2
W1
W2
G
C
OCC
TERMINAL BLOCK
RH
HUM 1
HUM
2
3
4
( RCB )
REHEAT
BOARD
TERMINAL
BLOCK
RH
1
2
3
4
HUM
3
DEHUMIDISTAT
1
DEHUMIDISTAT
Johnson Controls Unitary Products