OT18-60 Installation Instructions

5
Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
BLR
W2
C
TYPICAL H/P
ROOM THERMOSTAT
HEAT PUMP
OUTDOOR THERMOSTAT #1
CLOSE ON TEMPERATURE FALL
RED
GREEN
WHITE
BLUE
INDOOR UNIT
#18 GA. 8 WIRE
SEE NOTE #1
R
R
I
B
R
W
BL
BL
BR
G
R
R
G
BL
W
C
W2
G
R
W3
Figure 12
For outdoor temperatures below 0° F with 50% or higher relative humidity,set outdoor
thermostat at 0° F
.
BROWN
N
OTE 1: TERMINAL BLOCK MARKINGS ARE FOR AMANA® BRAND & DAIKIN (DV**PTC) AIRHANDLERS.
TWO-STAGE ELECTRIC HEAT
N
OTE 2: CONNECT OT18 #2 BETWEEN W2 OF THERMOSTAT AND BROWN WIRE ON INDOOR UNIT IF USED.
BR
BR
BA
BL
R
OUTDOOR
THERMOSTAT #2
(IF USED, SEE
NOTE 2)
O
Y
W
Y
#18 GA. 5 WIRE
SPLIT SYSTEM WIRING DIAGRAM - HEAT PUMPS ONLY!
ABOVE 10 kW