6
Install condensate drain trap as shown. Use ¾ “ drain
connection size or larger. Do not operate without trap. Unit
must be level or slightly inclined toward drain.
WIRING
All wiring should be made in accordance with the
National Electrical Code.
The local Power Company
should be consulted to determine the availability of sufficient
power to operate the unit. The voltage, frequency, and phase
at the power supply should be checked to make sure it
corresponds to the unit’s RATED VOLTAGE
REQUIREMENT.
Install a branch circuit fused disconnect near the unit, in
accordance with the N.E.C. or local codes. Wire sizes and
overcurrent protection should be determined from the unit
nameplate ampacity and in accordance with Table 4 (page
6) or the N.E.C. Under no circumstances should wiring be
sized smaller than is recommended by either of these two
sources.
Fuses smaller than that recommended on the wiring diagrams
could result in unnecessary fuse failure or service calls.
The use of protective devices of larger size than indicated
could result in extensive damage to the equipment. The
manufacturer bears no responsibility for damage caused to
equipment as result of the use of larger than is recommended
size protective devices.
All units have undergone a run test prior to packaging for
shipment. This equipment has been started at minimum
rated voltage and checked for satisfactory operation. Do
not attempt to operate this unit if the voltage is not within
the minimum and maximum voltages shown on nameplate.
All exterior wiring must be within approved weatherproof
conduit. The unit must be
permanently grounded
in
accordance with local codes, or in absence of local codes,
with N.E.C ANSI/ NFPA NO. 70-1984
or latest edition by
using ground lug in the control box.
Fuses or HACR type circuit breakers may be used where
codes permit.
T1
T2
T3
L1
L2
L3
CONTACTOR
HIGH VOLTAGE
DISCONNECT
SWITCH
LOW VOLTAGE CONNECTORS
R
C
O
M
M
O
N
H
E
A
T
F
A
N
C
O
O
L
W
Y
G
T
H
E
R
M
O
S
T
A
T
S
U
B
B
A
S
E
Y G R W
FOR INTERNAL WIRING SEE WIRING LABEL ATTACHED TO UNIT
HIGH VOLTAGE POWER WIRING
24 VOLT CONTROL WIRING
L3 CONNECTION - 3 PHASE ONLY
FIGURE 6
Note: Some single phase units are equipped with a single
pole contactor. Caution must be exercised when servicing
as only one leg of the power supply is broken with the
contractor.
To wire the unit, make the following high and low voltage
connections.
WARNING
HIGH
VOLTAGE
!
D
ISCONNECT
ALL
POWER BEFORE SERVICING OR INSTALLING
THIS UNIT.
M
ULTIPLE POWER SOURCES MAY BE PRESENT. FAILU
TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY O
DEATH.
RE
R
High Voltage Wiring: (See Figure 6)
a.
Single Phase- Two leads should be connected to terminals
L1 & L2 in the electrical control section, using wire sizes
specified in wiring table.
b.
Three Phase- Three leads should be connected to terminals
L1, L2 and L3 in the electrical section, using wire sizes
specified in wiring table.
Low Voltage Wiring: (See Figure 6)
a.
Air Conditioners- Connect 24V wires from the thermostat to
the corresponding wires in the control box using No. 18AWG
as follows:
LEAD
THERMOSTAT
Red
R (24V)
Green
G (Fan)
Yellow
Y (Cool)
W hite
W 1 (Heat)*
Brown
W 2 (Heat)*
TABLE 2
b.
Heat Pumps- Connect 24V wires from the thermostat to the
corresponding wires in the control box using No. 18AWG
as follows:
TERM INAL
THERM OSTAT
Red
R (24V)
Green
G (Fan)
Orange
O (Rev. Valve)
W hite
W 1 (Heat, 2nd)*
B rown
W 2 (Heat 3rd)*
Yellow
Y (Cool)
C (Blue)
C (Com mon)
*Optional field installed heat connections
TABLE 3
Internal Wiring:
A diagram detailing the internal wiring of this unit is located
on the electrical box cover. If any of the original wire supplied
with the appliance must be replaced, the wire gauge and
insulation must be the same as the original wiring.
Transformer is wired for 230 volts on the 208/230 models.
See wiring diagram for 208 volt wiring.
BRANCH CIRCUIT AMPACITY
15
20
25
30
35
40
45
50
SUPPLY WIRE LENGTH -
FEET
200
6
4
4
4
3
3
2
2
150
8
6
6
4
4
4
3
3
100
10
8
8
6
6
6
4
4
50
14
12
10
10
8
8
6
6
TABLE 4
