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•
If pressure rises above 2000 microns, a leak is present.
Check for leaks as previously indicated and repair as nec-
essary then repeat evacuation.
Electrical Connections
WARNING
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 due to electric shock.
Wiring must conform with NEC or CEC and all
local codes. Undersized wires could cause
poor equipment performance, equipment damage
or fire.
WARNING
To avoid the risk of fire or equipment damage, use
copper conductors.
NOTICE
Units with reciprocating compressors and non-bleed TXV's
require a Hard Start Kit.
The condensing unit rating plate lists pertinent electrical data
necessary for proper electrical service and overcurrent protec-
tion. Wires should be sized to limit voltage drop to 2% (max.)
from the main breaker or fuse panel to the condensing unit.
Consult the NEC, CEC, and all local codes to determine the
correct wire gauge and length.
Local codes often require a disconnect switch located near the
unit; do not install the switch on the unit. Refer to the installa-
tion instructions supplied with the indoor furnace/air handler for
specific wiring connections and indoor unit configuration. Like-
wise, consult the instructions packaged with the thermostat
for mounting and location information.
Overcurrent Protection
The following overcurrent protection devices are approved for
use.
•
Time delay fuses
•
HACR type circuit breakers
These devices have sufficient time delay to permit the motor-
compressor to start and accelerate its load.
Three Phase Compressor Rotation
CAUTION
Use care when handling scroll compressors. Dome temp-
eratures could be hot.
Three phase compressors are power phase dependent and
can rotate in either direction.
Verify proper rotation for three phase compressors by ensuring
the suction pressure drops and discharge pressure rises when
the compressor is energized. NOTE: When operated in re-
verse, a three phase scroll compressors is noisier and its cur-
rent draw substantially reduced compared to marked values.
To correct, disconnect power and switch any two leads at the
unit contactor and re-observe.
High Voltage Connections
Route power supply and ground wires through the high voltage
port and terminate in accordance with the wiring diagram pro-
vided inside the control panel cover.
Low Voltage Connections
Condensing unit control wiring requires 24 Volt minimum, 25VA
service from the indoor transformer. Low voltage wiring for two-
stage units depends on the thermostat used and the number
of control wires between the indoor unit and the condensing
unit. Route control wires through the low voltage port and ter-
minate in accordance with the wiring diagram provided inside
the control panel cover.
SYSTEM COMPOSITE DIAGRAM
HEAT PUMPS
10 KW & BELOW
HEAT PUMP
C
W2
O
Y
R
Y
B
W
O
Y
R
H
R
E
L
E
U
I
A
L
D
E
T
N
L
R
E
G
O
E
W
Y
O
W
BL
#18 GA. 5 WIRE
2
1
(OPTIONAL)
OUTDOOR THERMOSTAT
CLOSE ON TEMPERATURE FALL
SYSTEM COMPOSITE DIAGRAM
HEAT PUMPS
ABOVE 10 KW
HEAT PUMP
C
W2
O
Y
R
Y
B
W
O
Y
R
L
H
R
E
E
U
I
A
L
D
E
T
N
L
R
G
E
O
E
W
Y
O
W
BL
#18 GA. 5 WIRE
2
1
OT-1
2
1
OT-2
(OPTIONAL)
OUTDOOR THERMOSTAT
CLOSE ON TEMPERATURE FALL
NOTES:
1) OUTDOOR THERMOSTAT (OT-1) SHOULD BE THE
FIRST TO CLOSE AND THE LAST TO OPEN.
2) CONNECT WHITE AND BROWN WIRES FROM AIR-
HANDLER TOGETHER IF OT-2 IS NOT USED.
3) REMOVE WIRE WHEN USING OUTDOOR THERMOSTAT
4) TERMINAL BLOCK MARKINGS ARE FOR AMANA
AIRHANDLERS.
with Low Voltage Wires to Heat Pump Unit
NOTE: For two-stage units, refer to the Installation Instructions
supplied with the variable speed indoor units for field wiring
connections.
System Start Up
NOTE: Power must be supplied to the 18 SEER outdoor
units containing ECM motors before the power is applied
to the indoor unit. Sending a low voltage signal without
high voltage power present at the outdoor unit can cause
malfunction of the control module on the ECM motor.
5
TYPICAL H/P
#18 GA. 7 WIRE
ROOM THERMOSTAT
INDOOR UNIT
O
C
W2 G
R
E
R
R
R
RED
G
G
G
GREEN
SEE
NOTE
BR
#3
W
WHITE
W2
W
BL
C
BL
BLUE
SEE NOTE #4
#18 GA. 6 WIRE NEEDED WHEN OT IS USED
TYPICAL H/P
#18 GA. 7 WIRE
ROOM THERMOSTAT
INDOOR UNIT
O
C
W2
G
R
E
R
R
R
RED
BR
G
G
G
GREEN
SEE
NOTE
WHITE
#3
W
W2
SEE
NOTE
#2
1
2
BROWN
EHR
BR
W3
3
4
C
BLUE
BL
BL
SEE NOTE #4
#18 GA. 7 WIRE NEEDED WHEN TWO OT'S ARE USED
NOMENCLATURE
OT ---OUTDOOR THERMOSTAT (OPTIONAL)
EHR -EMERGENCY HEAT RELAY (OPTIONAL)
Thermostat
COLOR CODES
R --RED
Y --YELLOW
BL-BLUE
BR-BROWN
O --ORANGE
W -WHITE
G --GREEN
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