66307-YIM-B-0606
Unitary Products Group
17
FIGURE 18 - FIELD WIRING 24 VOLT THERMOSTAT
O C C
W 1
W 2
Y 1
G
Y 2
X
R
S D
C
R
E
M
O
T
E
M
IN
P
O
S
W 1
W 2
Y 1
G
Y 2
C
U N I T C O N T R O L
B O A R D
T - S T A T
R H
R C
The thermostat must provide a “G” signal
when there is a call for “W1.”The unit control
board will energize the indoor blower when
the compressors are energized; however, if
the thermostat calls for “W2” during the anti-
short-cycle delay, the electric heat (when
installed) will be energized immediately
upon the call for “W2.”
FIGURE 19 - FIELD WIRING DISCONNECT
TERMINALBLOCKTB1
GROUND
LUG
THREE
PHASE
POWER
SUPPLY
FIELD SUPPLIED
DISCONNECT
