9
9
ROOM THERMOSTAT
(6 wires)
BHA BLOWER COIL
(5 wires)
RH OUTDOOR UNIT
THERMOSTAT* CONNECTIONS TO RH-HEAT PUMPS
WITH INDOOR BHA BLOWER COIL
COLOR CODE
1ST GROUP COLOR
2ND GROUP NUMBER
OR-ORANGE
BK-BLACK
YL-YELLOW
BU-BLUE
VT-VIOLET
RD-RED
BR-BROWN
TN-TAN
GN-GREEN
GY-GRAY
WARNING
To avoid personal injury, shock or death, disconnect the
electrical power before electrically connecting any
equipment or changing any existing wiring.
A) No Outdoor Thermostat - Electric Heat Supplied During Defrost
Notes: (1) BHA-TB blowers may require additional wire(s) here. See BHA-TB wiring diagram for details.
(2) “Emergency Heat” will stop the compressor, but it will not bypass the outdoor thermostat. Only the amount of
heat controlled by W2 will be energized above the ATK setpoint.
(3) See notes on page 12 regarding connector, GY42 wire, and staging of electric heat.
R
W2
G
C/X
RHxEH001
R
W1
Y
W2 E G
C/X
O
R Y
W2 E
C/X
O
(1)
(1)
ROOM THERMOSTAT (2)
(6 wires)
BHA BLOWER COIL
(5 wires)
RH OUTDOOR UNIT
B) With Outdoor Thermostat - Electric Heat Supplied During Defrost
ATK Not Controlling 1st Group of Electric Heaters - 9.6 to 28.8 KW
R
W2
GY42
G
C/X
RHxEH002
R W1 Y W2 E G C/X O
ATK05
(1)
(1)
(3)
R Y
W2 E
C/X
O
Notes: (1) BHA-TB blowers may require additional wire(s) here. See BHA-TB wiring diagram for details.
