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161036-YIM-E-1008
2.
For single phase units - Connect one supply wire to L1 on
the contactor, and the other supply wire to L2 on the
contactor. Connect ground wire to ground lug in control
box. See Figure 10.
3.
For three phase units - connect supply wires to L1, L2 and
L3 on the contactor. Connect ground wire to ground lug in
control box.
4.
Unless the heat pump is grounded through proper wiring to
the service entrance ground terminal, a suitable separate
ground must be provided at the air conditioner.
Control Wiring
1.
Run low voltage control circuit wires through the "fingered"
snap bushing into the low voltage compartment.
2.
Run low voltage control circuit wires through the fingered
snap bushing to the low voltage terminal wire. Refer to
Figure 11 diagram to connect the low voltage control wiring
to the units low voltage connections.
3.
If using auxiliary electric heat, refer to the wiring
instructions provided with the heating kit.
Figure 10: Unit Component Location
10
W1 or 66
PKG.
HEAT
PUMP
BLOWER SPEED
TAP
Figure 11: Thermostat Wiring
Wall Thermostat Installation
If installing this heat pump system in conjunction with a
gas furnace, a baffle must be installed in the furnace to
prevent cold air from being discharged around the heat
exchanger. This could damage the heat exchanger and
cause asphyxiation. A sheet metal plate may be inserted
Components
in the supply outlet duct of the furnace to serve as a
for Optional
baffle. Advise the homeowner that the baffle plate
Heater Kit
must be removed before attempting to operate the
interior furnace.
A thermostat interlock system must be provided to
prevent simultaneous operation of any furnace with the
heat pump. If a furnace will be in the home, a separate
furnace thermostat must be used and an interlock switch
(See Figure 12) must be installed in both thermostat
circuits, insuring only one thermostat can be operated at
a time. This switch must break the control circuit of any
furnace used.
General recommendations for the location of the thermostat are
as follows:
The proper location of the room thermostat is most important to
insure that it will provide a comfortable home temperature.
Observe the following general rules when selecting a location:
1.
Locate thermostat about 5 feet above floor.
2.
Install on a partitioning wall, not on an outside wall.
3.
Never expose it to direct light from lamps, sun, fireplaces,
etc.
4.
Avoid locations close to doors that lead outside, to
windows or to adjoining outside walls.
5.
Avoid locations close to radiators, warm air registers, or in
the direct path of heat or cold air from them.
6.
Make sure that there are no pipes or ductwork in that part
of the wall chosen for thermostat location.
CC
WHT
W
BRN
C or B
PUR
X or L
RED
R
YEL
Y
GRN
ORG
O
O
G
Y
Johnson Controls Unitary Products
E
R
L
X
W2
B
THERMOSTAT
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