Bryant 575A Ð Fusible Plug Locations, A. Field Power Supply, B. Accessory Electric Heat

Fig. 6 Ð Fusible Plug Locations

A. Field Power Supply

All units except 208/230-v units are factory wired for the volt- age shown on the nameplate. If the 208/230-v unit is to be connected to a 208-v power supply, the transformer must be rewired by disconnecting the black wire from the 230-v orange wire on the transformer and connecting it to the 208-v red wire from the transformer. The end of the orange wire must then be insulated.

Refer to unit label diagram for additional information. Short wire leads (pigtails) are provided for ®eld wire connections. Use factory-supplied splices or UL approved copper/aluminum connector.

When installing units, provide a disconnect per NEC.

All ®eld wiring must comply with NEC and local requirements.

Install ®eld wiring as follows:

1.Install conduit through side panel openings.

2.Install power lines to connections as shown in Fig. 8. Wrap connections with electrical tape.

Voltage to compressor terminals during operation must be within voltage range indicated on unit nameplate (also see Table 4). Voltages between phases must be balanced within

2% and the current within 10%. Use the formula shown in Table 4, Note 2, to determine the percentage of voltage im- balance. Operation on improper line voltage or excessive phase imbalance constitutes abuse and may cause damage to elec- trical components. Such operation invalidates any applicable unit warranty.

B. Accessory Electric Heat

If the system is to be equipped with an accessory electric heater, refer to the 524A-H090 installation instructions and Table 5.

LEGEND

TXV Ð Thermostatic Expansion Valve

NOTE: The 8 o'clock position is shown above.

Fig. 7 Ð TXV Sensing Bulb Location

IV. MAKE ELECTRICAL CONNECTIONS

WARNING: Unit cabinet must have an uninterrupted, unbroken electrical ground to minimize the possibility of personal injury if an electrical fault should occur. This ground may consist of electrical wire connected to unit ground lug in control compartment, or conduit ap- proved for electrical ground when installed in accor- dance with National Electrical Code (NEC) ANSI (American National Standards Institute)/NFPA 70 (National Fire Protection Association) and local electri- cal codes. Failure to follow this warning could result in the installer being liable for personal injury of others.

LEGEND

CÐ Contactor

NEC Ð National Electrical Code

Field Wiring

Factory Wiring

Splice Connection

(Factory Supplied)

Fig. 8 Ð 575A090 Power Wiring Connections

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