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Bard HAC361-AD040, HAC421-AD040, HAC601-AD040, HAC481-BD040 Installation Instructions CMA-13A

Models: HAC601-BD040 HAC481-BD040 HAC181-AD040 HAC361-AD040 HAC481-AD040 HAC601-AD040 HAC301-AD040 HAC241-AD040 HAC421-AD040

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INSTALLATION INSTRUCTIONS – CMA-13A

Disconnect all power to unit. Remove control panel cover.

1.Screw compressor control module and terminal block into control panel as shown in Figure 5.

2.Disconnect yellow low voltage wire from compressor contactor and reconnect to terminal “Y” of the compressor control module.

3.Connect the yellow wire from the compressor control module to “Y” side of the compressor’s contactor coil. This is the same terminal from which the wire was removed in Step 2.

4.Connect the black wire from the compressor control module to common “C” side of the compressor contactor coil.

5.Connect a field supplied wire from “R” of the indoor unit to “R” on the compressor control module.

6.Route the high (red) and low (blue) pressure switch wires through the bushing in the bottom of the control panel. Connect the low pressure switch wire to terminals LPC of the compressor control module. Connect the high pressure switch wires to terminals HPC of the compressor control module.

7.Disconnect the high voltage outdoor motor lead and reconnect to the terminal block installed in Step 1.

8.Route the LAC (black) wires up through the busing in the bottom of the control panel. Connect one wire to the terminal block and the other to “T2” of the contactor. This will be the same terminal from which

the high voltage outdoor motor lead was removed in Step 7.

9.Remove service port caps on both the suction and discharge lines. Install the high pressure switch and the low ambient control on the discharge line with the flare tee adapter that is brazed to the controls. Install the low pressure switch on the suction line. Check for pressure at the flare tee dill valves after installation to insure that the dill valve in the unit service port was depressed by the flare tee connector. Check for leaks at the flare tee connectors. Replace service port caps on the flare tee service ports and tighten.

10.Adjust the compressor time delay relay to the desired delay on break. Two minutes are recommended. This TDR is variable from 30 seconds to 5 minutes.

11.Recheck wiring. Energize unit in first stage cooling. Compressor should not start until the time delay has expired. This will be 10% of the delay on break period. Run the unit for at least 5 minutes. The unit should not go into lockout. The condenser fan motor should not run until the discharge pressure has exceeded 300 PSI. Should the discharge pressure fall below 200 PSI while running the condenser fan motor will de-energize until the head pressure builds to 300 PSI.

12.Apply “This unit equipped with CMA-13A control module.” label to the inside of the inner control panel cover above the wiring diagram.

13.Replace all panels and covers. This completes installation.

FIGURE 9

INSTALLATION INSTRUCTIONS FOR

CMA-13A DUAL PRESSURE CONTROL, LOW AMBIENT FAN CYCLING CONTROL

and COMPRESSOR TIME DELAY RELAY

MIS-1304

Manual 2100-346 Page 14

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Bard HAC361-AD040, HAC421-AD040, HAC601-AD040, HAC481-BD040, HAC481-AD040, HAC601-BD040 Installation Instructions CMA-13A
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HAC601-BD040, HAC481-BD040, HAC181-AD040, HAC361-AD040, HAC481-AD040 specifications

The Bard HAC series, specifically the HAC421-AD040, HAC241-AD040, HAC301-AD040, HAC601-AD040, and HAC481-AD040 models, represents a versatile and robust selection of commercial heating and cooling systems designed for a variety of applications. These units are known for their efficiency, reliability, and innovative features, making them ideal for business, industrial, and institutional use.

One of the standout characteristics of the Bard HAC series is its energy efficiency. Each model is built to operate at high efficiency levels, which helps to reduce energy costs and contributes positively to environmental sustainability. The units typically feature advanced technology such as dual-fuel operation, allowing them to run on electricity and gas, providing flexibility in cost management depending on energy prices.

The HVAC systems are designed with the user experience in mind, incorporating easy-to-use digital controls. These controls provide users with the ability to adjust settings precisely and monitor system performance easily, contributing to improved comfort levels in any space. Additionally, the HAC series is known for its quiet operation, reducing noise pollution and creating a serene environment conducive to productivity.

Durability is another key aspect of the Bard HAC series. Built with high-quality materials, these units are designed to withstand the rigors of commercial use. Protective coatings and robust construction make them suitable for various applications, from schools and hospitals to warehouses and retail spaces.

Another important feature is their compact design, which allows for easy installation in tight spaces. This attribute is particularly valuable for urban environments where space is at a premium. The units also have a range of customizable options, including various sizes and heating and cooling capacities, ensuring that they can meet specific operational needs.

Bard HVAC also places an emphasis on ease of maintenance. With easily accessible components and straightforward design, routine upkeep can be performed quickly, minimizing downtime and reducing operational costs.

In conclusion, the Bard HAC421-AD040, HAC241-AD040, HAC301-AD040, HAC601-AD040, and HAC481-AD040 models are exemplary choices for those seeking a dependable, efficient, and adaptable heating and cooling solution. With their energy efficiency, user-friendly technology, durability, space-saving designs, and ease of maintenance, these units stand out as leading options for commercial HVAC needs.