Connect Control Wiring

Route 24v control wires through control wiring grommet and connect leads to control wiring. See Thermostat Installation Instructions for wiring specific unit combinations. (See Fig. 9.)

Use No. 18 AWG color-coded, insulated (35°C minimum) wire. If thermostat is located more than 100 ft (30.5 m) from unit, as measured along the control voltage wires, use No. 16 AWG color-coded wire to avoid excessive voltage drop.

All wiring must be NEC Class 1 and must be separated from incoming power leads.

Use furnace transformer, fan coil transformer, or accessory transformer for control power, 24v/40va minimum.

NOTE: Use of available 24v accessories may exceed the minimum 40va power requirement. Determine total transformer loading and increase the transformer capacity or split the load with an accessory transformer as required.

Final Wiring Check

IMPORTANT: Check factory wiring and field wire connections to ensure terminations are secured properly. Check wire routing to ensure wires are not in contact with tubing, sheet metal, etc.

Compressor Crankcase Heater

When equipped with a crankcase heater, furnish power to heater a minimum of 24 hr before starting unit. To furnish power to heater only, set thermostat to OFF and close electrical disconnect to outdoor unit.

A crankcase heater is required if refrigerant tubing is longer than 80 ft. (24.4 m), or when outdoor unit is 20 ft. (6.1 m) below the indoor unit. Refer to the Residential Piping and Long Line Guideline.

Install Electrical Accessories

Refer to the individual instructions packaged with kits or accessories when installing.

Start-Up

!CAUTION

PERSONAL INJURY HAZARD

Failure to follow this caution may result in personal injury.

Wear safety glasses, protective clothing, and gloves when handling refrigerant and observe the following:

S Front seating service valves are equipped with Schrader valves.

!CAUTION

ENVIRONMENTAL HAZARD

Failure to follow this caution may result in environmental damage.

Federal regulations require that you do not vent refrigerant to the atmosphere. Recover during system repair or final unit disposal.

!CAUTION

UNIT OPERATION AND SAFETY HAZARD

Failure to follow this caution may result in personal injury, equipment damage or improper operation.

S Do not overcharge system with refrigerant.

S Do not operate unit in a vacuum or at negative pressure. S Do not disable low pressure switch in scroll compressor

applications.

S Compressor dome temperatures may be hot.

Follow these steps to properly start up system:

1.After system is evacuated, fully open liquid and vapor ser- vice valves.

2.Unit is shipped with valve stem(s) front seated (closed) and caps installed. Replace stem caps after system is opened to refrigerant flow (back seated). Replace caps finger-tight and tighten with wrench an additional 1/12 turn.

3.Close electrical disconnects to energize system.

4.Set room thermostat at desired temperature. Be sure set point is below indoor ambient temperature.

5.Set room thermostat to HEAT or COOL and fan control to ON or AUTO mode, as desired. Operate unit for 15 minutes. Check system refrigerant charge.

 

 

TYPICAL

 

HEAT

HP THERMOSTAT

FAN COIL

 

PUMP

24 VAC HOT

R

R

 

R

24 VAC COM

C

C

 

C

 

 

HEAT STAGE 2

W2

W2

*

W2

 

 

E *

COOL/HEAT

Y

 

STAGE 1

W3 *

Y

 

 

 

 

INDOOR FAN

G

G

 

 

 

 

 

 

RVS COOLING

O

 

 

O

EMERGENCY

E

* IF AVAILABLE

 

HEAT

 

 

LEGEND

24-V FACTORY WIRING

24-V FIELD WIRING

FIELD SPLICE CONNECTION

ODT

OUTDOOR THERMOSTAT

EHR EMERGENCY HEAT RELAY

SHR SUPPLEMENTAL HEAT RELAY

A02325 / A97413

Fig. 9 - Generic Wiring Diagrams

(See Thermostat Installation Instructions

for specific unit combinations)

223A / 225B

5

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Bryant 223A installation instructions Compressor Crankcase Heater, Install Electrical Accessories, Start-Up
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223A specifications

The Bryant 223A is a cutting-edge air conditioning unit that epitomizes modern cooling technology. Designed for both residential and commercial applications, this model stands out for its efficiency, reliability, and user-friendly features. One of the most significant aspects of the Bryant 223A is its energy efficiency, boasting a Seasonal Energy Efficiency Ratio (SEER) rating of up to 16. This high rating means lower energy consumption, translating into reduced utility bills for homeowners and businesses alike.

One prominent feature of the Bryant 223A is its environmentally friendly design. It utilizes Puron refrigerant, which has zero ozone-depleting potential, making it a responsible choice for those looking to minimize their environmental footprint. In addition to being eco-conscious, the unit is equipped with a variable-speed compressor, allowing for improved humidity control and enhanced comfort levels. This technology enables the system to adjust its cooling output based on the current indoor conditions, resulting in more consistent temperatures and quieter operation.

Another noteworthy characteristic of the Bryant 223A is its robust construction. The cabinet is designed with galvanized steel, offering durability and resistance to corrosion. This resilience ensures that the unit can withstand the rigors of various weather conditions, contributing to its longevity. Moreover, the unit features an innovative design that minimizes noise levels, ensuring that it operates quietly without disturbing daily activities.

Ease of installation is yet another advantage of the Bryant 223A. The unit comes with a compact design, allowing for straightforward placement in a variety of settings. Additionally, its integration with modern smart thermostats provides users with enhanced control over their indoor climate. This feature enables homeowners to monitor and adjust their air conditioning settings remotely, adding convenience and efficiency to their energy management.

The Bryant 223A also incorporates advanced filtration systems, which significantly improve indoor air quality. Enhanced filters capture a wide range of airborne particles, including allergens, dust, and pollutants, making it an excellent choice for households with allergy sufferers. Overall, the Bryant 223A combines state-of-the-art technology, eco-friendly operation, and user-centric features, making it a leading choice in air conditioning solutions for a variety of environments.
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