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Manual 2100-438
Page 14

The standard Climate Control

Option X

is a remote

thermostat connection terminal block. See Figure 16 for

wiring diagram. Compatible thermostats are listed in

Table 4.
The Climate Control

Option G

is an electronic, non-

programmable manual or auto changeover thermostat.

The subbase of the thermostat is factory wired to the

front panel of the unit. The humidistat is included. See

Figure 17 for wiring diagram. Compatible for use with

Bard CS2000 Controller and Energy Recovery

Ventilator.
The Climate Control

Option E

is an electronic,

programmable thermostat. The subbase of the

thermostat is factory wired to the front panel of the unit.

The humidistat is included. See Figure 18 for wiring

diagram. Compatible for use with Energy Recovery

Ventilator.

NOTE: On option X or G the CS2000 (or other field

provided means to control ventilation) must be
used if any of the motorized ventilation options
are installed.

The unit rating plate lists a “Maximum Time Delay
Relay 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

WIRING – MAIN POWER

Refer to the unit rating plate and/or Table 2 for wire
sizing information and maximum fuse or “HACR Type”
circuit breaker size. Each unit is marked with a
“Minimum Circuit Ampacity”. This means that the
field wiring used must be sized to carry that amount of
current. Depending on the installed KW of electric
heat, there may be two field power circuits required. If
this is the case, the unit serial plate will so indicate. All
models are suitable only for connection with copper
wire. Each unit and/or wiring diagram will be marked
“Use Copper Conductors Only”. These instructions

MUST BE

adhered to. Refer to the National Electrical

Code (NEC) for complete current carrying capacity data
on the various insulation grades of wiring material. All
wiring must conform to NEC and all local codes.

The electrical data lists fuse and wire sizes (75° C
copper) for all models, including the most commonly
used heater sizes. Also shown are the number of field
power circuits required for the various models with
heaters.

there will be no nuisance tripping due to the momentary
high starting current of the compressor motor.

The disconnect access door on this unit may be locked
to prevent unauthorized access to the disconnect.

See Start Up section for information on three phase
scroll compressor start-ups.
The field wiring connections are located behind the top

and hinged panel in the circuit breaker panel. See

Figure 14.

WIRING – LOW VOLTAGE WIRING

230/208V, 1 PHASE AND 3 PHASE EQUIPMENT

DUAL PRIMARY VOLTAGE TRANSFORMERS.

All Equipment leaves the factory wired on 240V tap.

For 208V operation, reconnect form 240V to 208V tap.

The acceptable operating voltage range for the 240 and

208V taps are as noted in Table 3.