Bard WA121 Wiring Main Power, Wiring LOW Voltage Wiring, Thermostat Wire Size, Wall Thermostat

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WIRING – MAIN POWER

Refer to the unit rating plate for wire sizing information and maximum fuse or “HACR” type circuit breaker size. Each outdoor 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” of “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.

WIRING – LOW VOLTAGE WIRING

230/208, 1 phase equipment use 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:

TAP RANGE

240

253

-

216

208

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).

Five (5) wires should be run from thermostat subbase to the 24V terminal board in the unit. A five conductor, 18 gauge copper, color-coded thermostat cable is recommended. The connection points are shown in Figure 7.

TABLE 3

THERMOSTAT WIRE SIZE

Transformer

 

 

Maximum Distance

VA

FLA

Wire Gauge

in Feet

 

 

 

 

 

 

20 Gauge

45

 

 

18 Gauge

60

40

2.3

16 Gauge

100

 

 

14 Gauge

160

 

 

12 Gauge

250

 

 

 

 

 

TABLE 4

 

WALL THERMOSTAT

 

 

Thermostat

Predominate Features

 

 

8403-057

1 stage Cool, 1 stage Heat

Electronic Non-Programmable

TH5220D1153

 

Auto or Manual changeover

8403-058

2 stage Cool, 2 stage Heat

Electronic Non-Programmable

TH5220D1151

 

Auto or Manual changeover

 

3 stage Cool; 3 stage Heat

8403-060

Programmable/Non-Programmable Electronic

(1120-445)

HP or Conventional

 

Auto or Manual changeover

 

 

Manual 2100-234I

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Contents Bard Manufacturing Company, Inc Bryan, OhioContents Getting Other Information and Publications Wall Mount General Information AIR Conditioner Wall Mount Model NomenclatureX X X J Electric Heat TableUnit Dimensions Factory Built AT 5 Inches Electrical Heat Specifications Shipping DamageGeneral Duct Work FiltersFresh AIR Intake Condensate DrainInstallation Instructions Wall Mounting InformationMounting the Unit Mounting Instructions Wall Mounting Instructions Common WALL-MOUNTING Installations Wiring Main Power Wiring LOW Voltage WiringThermostat Wire Size Wall ThermostatLOW Voltage Wiring Start UP Adjustments Pressure Service PortsAdjustable Delay on Make and Delay on Break Timer Typical Settings for Dual Unit InstallationTroubleshooting FAN Blade Setting DimensionsRefrigerant Charge Optional Field Installed Accessories Pressure TableWA121

WA121 specifications

The Bard WA121 is a cutting-edge heating and cooling unit that has been designed for residential and light commercial applications. With a focus on energy efficiency and user comfort, the WA121 stands out in the competitive HVAC market. One of its most notable features is its energy efficiency rating, which meets or exceeds the standards set by the Department of Energy. This translates to significant savings on utility bills, ultimately benefiting both the environment and the consumer's wallet.

A key characteristic of the Bard WA121 is its advanced direct expansion system. This feature allows for optimal heat transfer, resulting in quick and effective temperature regulation. The unit is equipped with a high-efficiency scroll compressor that ensures smooth operation and reduced noise levels, making it suitable for installation in residential settings without disrupting daily life.

The versatile design of the WA121 enables it to be used in various applications, from offices and schools to workshops. Its compact structure means that it can be easily integrated into tight spaces while still delivering robust performance. The unit is built to withstand harsh conditions, featuring a durable cabinet that is made from galvanized steel and finished with a weather-resistant powder coating.

Another outstanding feature is the integrated microprocessor control. This technology allows for precise temperature management, ensuring consistent comfort levels throughout the space. Additionally, the WA121 comes with a programmable thermostat option, providing users with the flexibility to optimize energy consumption based on usage patterns.

The Bard WA121 also focuses on user convenience with its easy-to-access maintenance points. The design allows technicians to perform routine service checks and repairs without excessive disassembly, thereby reducing downtime and maintenance costs.

In terms of airflow, the WA121 utilizes a multi-speed fan that can adjust to varying conditions, ensuring that air distribution remains efficient regardless of external temperatures. This adaptability enhances the overall performance of the unit, making it an ideal choice for diverse environments.

Overall, the Bard WA121 is engineered with a blend of efficiency, durability, and user-friendliness that positions it as a reliable solution for heating and cooling needs. With its commitment to performance and innovation, it is a solid investment for those looking to upgrade their HVAC systems.