Wiring Main Power, Unit 24V Terminal Board

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” or “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.

The disconnect access door on this unit may be locked to prevent unauthorized access to the disconnect. To convert for the locking capability, bend the tab located in the bottom left hand corner of the disconnect opening under the disconnect access panel straight out. This tab will now line up with the slot in the door. When shut a padlock may be placed through the hole in the tab preventing entry.

FIGURE 7

UNIT 24V TERMINAL BOARD

IMPORTANT NOTE: Only the thermostat and subbase combinations as shown in Figure 7 will work with this equipment. The thermostat and subbase must be matched, and the correct operation can be assured only be proper selection and application of these parts.

Manual 2100-373

Page 10

WH183, WH242 specifications

The Bard WH242 and WH183 are innovative heating and cooling systems designed to meet the demands of various residential and commercial applications. These units are recognized for their efficiency, reliability, and advanced technologies, making them popular choices among property owners and HVAC professionals.

The Bard WH242 is a high-capacity unit that delivers optimal temperature control, making it ideal for larger spaces. It boasts a robust design and a powerful compressor, which work together to provide consistent heating and cooling throughout the year. The unit features a multi-speed blower, helping to distribute air evenly while also enhancing comfort levels. Energy efficiency is a key highlight, as the WH242 complies with Energy Star standards, which means it consumes less energy while offering high performance.

On the other hand, the Bard WH183 is designed for smaller spaces without compromising on comfort or efficiency. It incorporates a compact design, making it easier to install in tight spaces. Despite its size, the WH183 is equipped with advanced technologies that ensure reliable operation. Like the WH242, this unit also features a multi-speed blower, which aids in maintaining a steady and comfortable indoor climate.

Both models utilize high-quality insulation and advanced refrigerant management systems that minimize energy loss. The systems are also equipped with advanced diagnostics, allowing for easier maintenance and troubleshooting. This means that HVAC technicians can quickly identify potential issues, ensuring that the units remain operational with minimal downtime.

Overall, the Bard WH242 and WH183 represent cutting-edge solutions for temperature management. Their design emphasizes durability, efficiency, and user-friendliness, appealing to a wide range of customers. With their combination of power, compactness, and advanced features, these units are well-suited for diverse applications, including schools, offices, and residential homes. Whether for heating in the winter or cooling in the summer, Bard's commitment to quality and innovation is evident in both the WH242 and WH183 models, making them a smart choice for efficient climate control.