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Manual 2100-467
Page 13 of 23
TABLE 6
THERMOSTAT WIRE SIZE
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mumixaM
ecnatsiD
teeFnI
553.2
02
81
61
41
21
54
06
001
061
052
TRANSFORMER TAPS
230/208V, 1 phase and 3 phase equipment employ dual
primary voltage transformers. All equipment leaves the
factory wired on 240V tap. For 208V operation,
reconnect from 240V to 208V tap. The acceptable
operating voltage range for the 240 and 208V taps are:
TAP RANGE
240 253 – 216
208 220 – 187
NOTE: The voltage should be measured at the field
power connection point in the unit and while
the unit is operating at full load (maximum
amperage operating condition).
WIRING – MAIN POWER
Refer to the unit rating plate for wire sizing information
and maximum fuse size. Each outdoor unit is marked
with a “Minimum Circuit Ampacity”. This means that
the field wiring used must be sized to carry that amount
of current. If field installed heaters are added to the
basic unit, a second separate power supply circuit will
be required. The heater rating plate located adjacent to
the basic unit rating plate will show the appropriate
circuit ampacity fuse size, etc. (Also see “Electrical
Specifications” on pages 5 & 7.) All models are
suitable for connection with copper wire only. These
instructions must be adhered to. Refer to the National
Electrical Code for complete current carrying capacity
data on the various insulation grades of wiring material.
The electrical specifications list fuse and wire sizes
(75°F copper) for all models including the most
commonly used heater sizes.
The unit rating plate lists a “Maximum Time Delay
Fuse” or “HACR” type circuit breaker that is to be used
with the equipment. The correct size must be used for
proper circuit protection and also to assure that there
will be no nuisance tripping due to the momentary high
starting current of the compressor.
WIRING – 24V LOW VOLTAGE CONTROL
CIRCUIT
Five (5) wires should be run from thermostat subbase to
the 24V terminal board in the unit. A five conductor, 18
gauge copper, color-coded thermostat cable is
recommended. The connection points are shown in
Figure 6.
THERMOSTATS
See specific wiring information for the different models, heater KWs, and voltages on unit and heating wiring
diagrams.
IMPORTANT NOTE: Only the thermostat and subbase combinations as shown above will work with this equipment.
The thermostat and subbase MUST be matched, and correct operation can be assured only by
proper selection and application of these parts.
TABLE 7
WALL THERMOSTAT AND SUBBASE COMBINATIONS
tatsomrehTesabbuSserutaeFtnanimoderP
940-3048
083-39F1
——
,loocegats2,taehegats2
elbammargorPcinortcelE
240-3048
0701G1158T
——
,loocegats1,taehegats2
otua-no:naFotuA-looc-ffo-taeH:metsyS
elbammargorP-noNcinortcelE
840-3048
3131C0048T
——
,loocegats1,taehegats1
otua-no:naFlooc-ffo-taeH:metsyS
elbammargorP-noNcinortcelE