V. STEP 5 — MAKE ELECTRICAL CONNECTIONS

WARNING: Unit cabinet must have an uninter- rupted, 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 approved for electrical ground when installed in accordance with NEC (National Electrical Code) ANSI (American National Standards Institute) / NFPA (National Fire Protection Association) 70 latest year and local electrical codes. Failure to follow this warning could result in the installer being liable for personal injury of others.

A. Field Power Supply

All units except 208/230-v units are factory-wired for the voltage shown on the unit 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 terminal on the transformer and connecting it to the 200-v terminal from the transformer.

Refer to unit label diagram for additional information. Pig- tails are provided for field wire connections. Use factory- supplied splices or UL (Underwriters’ Laboratories) approved copper/aluminum connector.

When installing units, provide a disconnect per the NEC.

All field wiring must comply with the NEC and local re- quirements. In Canada, electrical connections must be made in accordance with CSA (Canadian Standards Association) C22.1 Canadian Electrical Code Part One.

Install field wiring as follows:

1.Install conduit through side panel openings. For units without electric heat, install conduit between discon- nect and control box.

2.Install power lines to terminal connections as shown in Fig. 7.

3.For units with electric heat, refer to Accessory Instal- lation Instructions.

4.If thru-the-bottom control connections are used, refer to the accessory installation instructions for informa- tion on control wiring. Refer to Fig. 6 for drilling holes in basepan.

During operation, voltage to compressor terminals must be within range indicated on unit nameplate (see Tables 2A and 2B). On 3-phase units, voltages between phases must be bal- anced within 2%, and the current within 10%. Use the for- mula shown in Tables 2A and 2B, Note 2 on page 10 to determine the percentage of voltage imbalance. Operation on improper line voltage or excessive phase imbalance consti- tutes abuse and may cause damage to electrical compo- nents. Such operation would invalidate any applicable warranty.

208/230-3-60

 

LEGEND

575-3-60

460-3-60

 

 

C

— Contactor

 

 

 

 

COMP — Compressor

 

 

IFC

— Indoor Fan Contactor

 

 

NEC

— National Electrical Code

 

 

TB

— Terminal Block

 

 

 

Field Wiring

 

Factory Wiring Splice Connection (Factory-Supplied)

Fig. 7 — Power Wiring Connections

—7—

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Bryant 548D installation instructions Make Electrical Connections, Field Power Supply, 575-3-60, 460-3-60
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548D specifications

The Bryant 548D heat pump stands out in the HVAC market for its robust performance, energy efficiency, and advanced technology. Known for its reliability, this particular model is designed to provide optimal heating and cooling for both residential and light commercial applications.

One of the standout features of the Bryant 548D is its variable-speed compressor, which allows for precise temperature control and enhances comfort levels in any environment. This technology enables the 548D to operate efficiently at different speeds, adjusting its output based on the heating or cooling demand. As a result, homeowners can enjoy consistent temperature regulation without the wide fluctuations typical of single-stage systems.

In addition to the variable-speed compressor, the Bryant 548D utilizes advanced refrigerant technology. It employs the environmentally friendly Puron refrigerant, which not only improves the unit's efficiency but also reduces its carbon footprint. This makes the 548D a sustainable choice for those looking to minimize their environmental impact while still enjoying superior heating and cooling performance.

Another key characteristic of the Bryant 548D is its impressive energy efficiency rating, often exceeding the minimum requirements set by the Department of Energy. With a high Seasonal Energy Efficiency Ratio (SEER) for cooling in warmer months and an excellent Heating Seasonal Performance Factor (HSPF), the 548D minimizes energy consumption while maximizing comfort.

The 548D also features Quiet Operation technology, ensuring that the system runs quietly in the background without disrupting daily activities. This is particularly beneficial for light commercial spaces or homes where noise can be a concern. The sleek design and compact size make the unit easy to install in various settings without occupying excessive space.

Furthermore, Bryant incorporates advanced smart technology within the 548D model. The system can be integrated with smart thermostats, allowing users to monitor and control their heating and cooling settings remotely. This feature not only enhances convenience but also enables homeowners to program their systems for maximum efficiency.

In conclusion, the Bryant 548D heat pump is an exceptional choice for those seeking a reliable, efficient, and technologically advanced heating and cooling solution. Its combination of variable-speed compression, eco-friendly refrigerant, high energy efficiency, and quiet operation positions it well in the competitive HVAC market, making it a top choice for both residential and light commercial applications. By investing in the Bryant 548D, consumers can enjoy superior comfort and lower energy bills year-round.
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