Factory-Option Thru-Base Connections, Thermostat

Factory-Option Thru-Base Connections —

This service connection kit consists of a 1/2-in electrical bulkhead connector and a 1 1/2-in electrical bulkhead connector, all factory-installed to the basepan cover plate. Remove the cover plate from the shipping bracket and attach to basepan with 8 screws provided. The 1/2-in bulkhead connector enables the low-voltage control wires to pass through the basepan. The 1 1/2-in electrical bulkhead connector allows the high-voltage power wires to pass through the basepan. See Fig. 26.

Check tightness of connector lock nuts before connecting electrical conduits.

LOW VOLTAGE

CONDUIT

CONNECTOR

HIGH VOLTAGE

CONDUIT

CONNECTOR

Thermostat —

Install a Bryant-approved accessory 2 stage Cooling/Heating thermostat according to installation instructions included with the accessory. The 548J*14D models do not require a thermostat with an O function to control the reversing valve operation. If using an electronic thermostat, configure it for “non-heat pump” operation. Locate the thermostat accessory on a solid wall in the conditioned space to sense average temperature in accordance with the thermostat installation instructions.

If the thermostat contains a logic circuit requiring 24-v power, use a thermostat cable or equivalent single leads of different colors with minimum of seven leads. If the thermostat does not require a 24-v source (no “C” connection required), use a thermostat cable or equivalent with minimum of six leads. Check the thermostat installation instructions for additional features which might require additional conductors in the cable.

For wire runs up to 50 ft. (15 m), use no. 18 AWG (American Wire Gage) insulated wire (35_C minimum). For 50 to 75 ft. (15 to 23 m), use no. 16 AWG insulated wire (35_C minimum). For over 75 ft. (23 m), use no. 14 AWG insulated wire (35_C minimum). All wire sizes larger than no. 18 AWG cannot be directly connected to the thermostat and will require a junction box and splice at the thermostat.

548J*14D

C10017

Fig. 26 - Thru-Base Connection Fittings

Field-supplied and field-installed liquidtight conduit connectors and conduit may be attached to the connectors on the basepan. Pull correctly rated high voltage and low voltage wires through appropriate conduits. Connect the power conduit to the internal disconnect (if unit is so equipped) or to the external disconnect (through unit side panel). Remove one of the two knockouts located on the bottom left side of the unit control box. Use this hole for the control conduit.

Units without Thru-Base Connections —

1. Install power wiring conduit through side panel open-

Typical

Thermostat

Connections

(Note 2)

O/B/Y2

(Note 1)

Central

Terminal

Board

GH E

	W2	R
	W2	M


		O
	W1	O
	W1	S


		T
	Y2	T
	Y2	A
		A
		T
	Y1	T
	Y1

ings. Install conduit between disconnect and control

box.

2. Install power lines to terminal connections as shown

in Fig. 22.

Field Control Wiring —

The 548J*14D unit requires an external temperature control device. This device can be a thermostat emulation device provided as part of a third-party Building Management System.

Note 1: Typical multi-function marking. Follow manufacturer’s configuration instructions to select Y2. Do not configure for O output.

Note 2: W2 connection not required on units without electric heating.

Field Wiring

C09012

Fig. 27 - Typical Low-Voltage Control Connections

548J*14D specifications

The Bryant 548J*14D is a highly efficient and versatile air conditioning unit designed to meet the varying demands of residential and light commercial applications. This model stands out due to its advanced engineering, energy-saving features, and reliable performance, making it an ideal choice for homeowners looking to enhance comfort without compromising on energy efficiency.

One of the main features of the Bryant 548J*14D is its excellent SEER (Seasonal Energy Efficiency Ratio) rating, which signifies its ability to provide cooling while consuming less energy. Optimized for efficiency, this unit employs a high-efficiency compressor that adjusts its output based on cooling demands, allowing it to use only the energy necessary to maintain a comfortable environment.

The unit’s all-aluminum evaporator coil ensures durability and resistance to corrosion, contributing to its longer lifespan and consistent performance. Additionally, the Bryant 548J*14D incorporates advanced refrigeration technologies for maximum heat transfer efficiency. This technology not only enhances cooling performance but also improves overall system reliability.

A key characteristic of the Bryant 548J*14D is its Whisper Series technology designed for quiet operation. The low-noise design minimizes sound levels, allowing for unobtrusive cooling in residential spaces while still ensuring effective airflow and cooling capacity. This makes it particularly favorable for installation in bedrooms and other noise-sensitive areas.

Another noteworthy aspect of the Bryant 548J*14D is its compatibility with the MyBryant smartphone app, which enables homeowners to monitor and control their HVAC systems remotely. This connectivity offers convenience and helps to optimize energy usage, as users can adjust settings based on their schedules and preferences.

Furthermore, the Bryant 548J*14D is designed with a robustness that allows it to withstand diverse weather conditions, ensuring reliable performance even in extreme climates. The unit’s compact design eases installation in various settings, whether it's on rooftops, near walls, or on concrete pads.

In summary, the Bryant 548J*14D is a cutting-edge air conditioning unit that combines energy efficiency, quiet operation, and advanced technologies. With its robust construction, smart features, and reliable performance, it stands as a valuable solution for anyone looking to enhance comfort and save on energy costs in their homes or light commercial environments.

Bryant 548J*14D Factory-Option Thru-Base Connections, Thermostat, Field Control Wiring

Models: 548J*14D