Due to ICE AIR’s ongoing product development programs, the information in this document is subject to change without notice.
6
General Wiring
Line Voltage
Wiring, including the electrical ground, must comply with the
National Electrical Code as well as all applicable local codes.
Consult the wiring diagram below for field connections on the right
of the electrical diagram located on the back of the unit electrical
compartment front panel. All electrical connections must be made by
the installing (or electrical) contractor. All final electrical connections
must be made with a length of flexible conduit to minimize vibration
and sound transmission to the building.
General Line Voltage Wiring
Be sure the available power is the same voltage and phase shown
on the unit serial number plate. Line and low voltage wiring must be
done in accordance with local codes or the National Electric Code,
whichever is applicable.
WARNING:
Electrical shock can cause personal injury or
death while installing or servicing the system. Always turn OFF
the main power to system. There may be more than one
disconnect switch.
Power Connection
Units equipped with disconnect:
Connect incoming line voltage
to the disconnect switch and connect ground wire to the ground lug
provided inside the electrical compartment.
Units without disconnect:
Line voltage connection is made by
connecting the incoming line voltage wires to the terminal block.
Volt Operation
All commercial units are factory-wired for specific voltages.
These include:
• 115 VAC
• 208-230 VAC
• 265-277 VAC
For 230 volt single-phase operation, the primary voltage to the
transformer must be changed.
NOTE:
Failure to change the primary voltage lead when using 230 VAC line voltage
may result in electrical component damage and intermittent system failure.
C
R
F-
RV+
RV-
C
R
C1
L1
L2
O/L
POWER
V
COMPRESSOR
RELAY4
24VDC
REVERSING VALVE
V
C
S
R
WH
RE
WH
BK
RE
BL
BK
RED
FAN1
FAN2
COMP
L
N
RELAY3
208VAC
24VAC
TRANSFORMER
BK
BK
BK
WH
WH
WH
P+
P-
F+
A
RT
RT
G1
G2
Y1
W1
W2
O
COF
LP1
LP2
HP2
BR
WH
BL
HP1
CN4
CN3
CN2
ELA-9830-V6.0
BK
BK
EVAPORATOR TEMP
PROBE
COAXIAL COIL TEMP
PROBE
ROOM
TEMP PROBE 1
HP SWITCH
LP SWITCH
BR
BL
COF
PUMP
BL
BL
BK
BK
RELAY2
208VAC
PLUG4
PLUG 2
PLUG 3
RT
ROOM
TEMP PROBE 2
LO
HI
EVAP. BLOWER
MOTOR
TO LOW VOLTAGE
THERMOSTAT
NO
COM
RELAY1
24VDC
C
L
N
PLUG 1
RELAY1 = WATER PUMP RELAY
RELAY3 = EVAP. BLOWER MOTOR RELAY(HI)
RELAY4 = REVERSING VALVE RELAY
RELAY2 = EVAP. BLOWER MOTOR RELAY(LO)
C1=COMPRESSOR CAPACITOR
WIRE CHART
COM
24 VAC
COOL
HEAT
HI-FAN
C
R
Y1
W1
G1
G2
YEL
RED
YEL/GRE
BLU
ORN
WHT
LOW VOLTAGE
LOW- FAN
ALA
A
BLK
-
O
GRA
G
RT PPL
RT
RT
TAN
VIEW 1
PLUG4
2
1
1-
PLUG2 WIRE CHART
RV+
YEL
2-
RV-
WHT
PLUG1
1
1-
PLUG2 WIRE CHART
COF
PLUG2
2
1
L
BLK
1-
PLUG1 WIRE CHART
2-
N
WHT
WHT
4
3
G
YEL/GRE
3-
4-
-
-
1 2 3
4 5 6
7 8 9
1-
PLUG7 WIRE CHART
2-
3-
4-
5-
6-
7-
8-
9-
BLK
BLU
ORG
WIT
GRY
BRN
BLK
YEL
YEL/GRE
FAN1
FAN2
FAN3
FAN4
FAN5
C
L
N
G
PLUG3