17
DO NOT connect aluminum field wire to the contactor terminals.
GROUNDING
A grounding lug is provided near the contactor for a ground wire.
CONTROL WIRING
(See Figure 4)
If the low voltage control wiring is run in conduit with the power supply, Class I insu-
lation is required. Class II insulation is required if run separate. Low voltage wiring
may be run through the insulated bushing provided in the 7/8 hole in the base
panel, up to and attached to the pigtails from the bottom of the control box. Conduit
can be run to the base panel if desired by removing the insulated bushing.
A thermostat and a 24 volt, 40 VA minimum transformer are required for the control
circuit of the condensing unit. The furnace or the air handler transformer may be used
if sufficient. See the wiring diagram for reference. Use Table 8 to size the 24 volt con-
trol wiring.
!
WARNING
THE UNIT MUST BE PERMANENTLY GROUNDED. FAILURE TO DO SO
CAN CAUSE ELECTRICAL SHOCK RESULTING IN SEVERE PERSONAL
INJURY OR DEATH.
SOLID COPPER WIRE - AWG.
3.0
16
14
12
10
10
10
2.5
16
14
12
12
10
10
2.0
18
16
14
12
12
10
50
100
150
200
250
300
Length of Run - Feet (1)
T
h
e
rm
o
s
ta
t
L
o
a
d
-
A
m
p
s
(1) Wire length equals twice the run distance.
NOTE: Do not use control wiring smaller than No. 18 AWG between thermostat and outdoor unit.
TABLE 8
FIELD WIRE SIZE FOR 24 VOLT THERMOSTAT CIRCUITS
FIGURE 3
CONTROL WIRING FOR GAS OR ELECTRIC HEAT
FOR TYPICAL ELECTRIC HEAT
FOR TYPICAL GAS OR OIL HEAT
Содержание 018J*Z
Страница 24: ...24 FIGURE 4 SINGLE PHASE WIRING DIAGRAM ...
Страница 25: ...25 FIGURE 5 THREE PHASE WIRING DIAGRAM C D Y VOLTAGES ...
Страница 26: ...26 FIGURE 6 ...
Страница 27: ...27 ...
Страница 28: ...28 CM 0908 ...
