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.

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

FIGURE 15

COMPONENT LOCATION

 

SIDE FIELD WIRE

 

ENTRANCE

ELECTRIC

 

HEATERS

 

 

REMOTE

 

THERMOSTAT

UNIT

TERMINAL

BLOCK

MOUNTED

 

THERMOSTAT

INDOOR

LOCATION

BLOWER

 

DEHUMIDIFICATION CONTROL (OPTIONAL)

CIRCUIT BREAKER PANEL & CONTROLS

LOWER

CONTROL

PANEL

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 15.

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 from 240V to 208V tap. The acceptable operating voltage range for the 240 and 208V taps are as noted in Table 3.

TABLE 3

OPERATING VOLTAGE RANGE

TAP

RANGE

 

 

240V

253 – 216

 

 

208V

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).

The standard Climate Control Option X is a remote thermostat connection terminal block. See Figure 17 for wiring diagram. Compatible thermostats are listed in Table 4.

The Climate Control Option A 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. See Figure 18 for wiring diagram. Compatible for use with Bard CS2000A* Controller and Energy Recovery Ventilator.

The Climate Control Option D is an electronic, programmable thermostat. The subbase of the thermostat is factory wired to the front panel of the unit. See Figure 19 for wiring diagram. Compatible for use with Energy Recovery Ventilator or Economizer.

The Climate Control Option H is an electronic, programmable thermostat and a CO2 controller. The subbase of the thermostat and CO2 controller are factory wired to the front panel of the unit. See Figure 20 for wiring diagram.

NOTE: On option X or A the CS2000A* (or other field provided means to control ventilation) must be used if any of the motorized ventilation options are installed.

NOTE: Thermostats are shipped in the bottom of the unit and must be mounted to the factory mounted subbase at time of installation.

Manual

2100-522B

Page

20 of 38

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Bard Q42A1, Q30A1, Q36A1, Q60A1 Wiring Main Power, Wiring LOW Voltage Wiring, Component Location, Operating Voltage Range

Q48A1, Q24A1, Q60A1, Q42A1, Q36A1 specifications

The Bard Q60A1, Q48A1, Q30A1, Q36A1, and Q42A1 are innovative medical devices designed for versatile applications in various healthcare settings. These models are known for their adaptability, precision, and advanced technologies, making them essential tools for healthcare professionals.

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