Installation Instructions

8
HIGH VOLTAGE! DISCONNECT ALL POWER BEFORE SERVICING.
MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO
MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
WARNING
HEAT PUMP
C
W2
O
YR
#18 GA. 7 WIRE
RED
R
BR
G
SEE
NOTE
3
W
GREEN
WHITE
BL
BLUE
R
Y
O
W
BL
#18 GA. 5 WIRE
OUTDOOR THERMOSTAT
(OPTIONAL) MAKE ON FALL
CONVENTIONAL
ROOM THERMOSTAT
Y
O
CW2G
R
E
HEAT PUMP
C
W2
O
YR
R
E
D
Y
E
L
L
O
W
O
R
A
N
G
E
W
H
I
T
E
B
L
U
E
R
Y
O
W
BL
OT-1
OT-2
#18 GA. 5 WIRE
#18 GA. 7 WIRE NEEDED WHEN (2) OTs ARE USED
BL
EHR
SEE
NOTE
3
W
1
2
3
4
BLUE
BROWN
WHITE
GREEN
SEE
NOTE
2
G
CONVENTIONAL
ROOM THERMOSTAT
YOCW2GR
E
R
#18 GA. 7 WIRE
MBR
SYSTEM COMPOSITE DIAGRAM
800-2000
10 KW & BELOW
MBR
SYSTEM COMPOSITE DIAGRAM
1200-2000
ABOVE 10 KW
NOTES
1) OUTDOOR THERMOSTAT (OT-1) SHOULD BE THE
FIRST TO CLOSE AND THE FIRST TO OPEN.
2) IF OUTDOOR THERMOSTAT IS NOT USED. TIE WHITE
AND BROWN WIRES FROM AIR HANDLER TOGETHER.
3) REMOVE WIRE WHEN USING OUTDOOR T-STAT.
#18 GA. 7 WIRE NEEDED WHEN (2) OTs ARE USED
NOMENCLATURE
OT - OUTDOOR THERMOSTAT (OPTIONAL)
MOF - MAKE ON FALL
EHR - EMERGENCY HEAT RELAY (OPTIONAL)
COLOR CODES
R - RED O - ORANGE
Y - YELLOW W - WHITE
BL - BLUE PK - PINK
V - VIOLET G - GREEN
BR - BROWN
SEE NOTE 1
#18 GA. 6 WIRE NEEDED WHEN OT IS USED
FIGURE 9
FIGURE 10
MBR UNIT
RED
MBR UNIT
Wiring is subject to change, always refer to the wiring diagram on the unit for the most up-to-date wiring.