Bard W18H1, W24H1, W48H1, W36H1, W42H1, W60H1, W30H1 Topping OFF System Charge, Safety Practices

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THESE UNITS REQUIRE R-410A REFRIGERANT AND POLYOL ESTER OIL.

GENERAL:

1.Use separate service equipment to avoid cross contamination of oil and refrigerants.

2.Use recovery equipment rated for R-410A refrigerant.

3.Use manifold gauges rated for R-410A (800 psi/250 psi low).

4.R-410A is a binary blend of HFC-32 and HFC-125.

5.R-410A is nearly azeotropic - similar to R-22 and R-12. Although nearly azeotropic, charge with liquid refrigerant.

6.R-410A operates at 40-70% higher pressure than R-22, and systems designed for R-22 cannot withstand this higher pressure.

7.R-410A has an ozone depletion potential of zero, but must be reclaimed due to its global warming potential.

8.R-410A compressors use Polyol Ester oil.

9.Polyol Ester oil is hygroscopic; it will rapidly absorb moisture and strongly hold this moisture in the oil.

10.A liquid line dryer must be used - even a deep vacuum will not separate moisture from the oil.

11.Limit atmospheric exposure to 15 minutes.

12.If compressor removal is necessary, always plug compressor immediately after removal. Purge with small amount of nitrogen when inserting plugs.

TOPPING OFF SYSTEM CHARGE

If a leak has occurred in the system, Bard Manufacturing recommends reclaiming, evacuating (see criteria above), and charging to the nameplate charge. If done correctly, topping off the system charge can be done without problems.

With R-410A, there are no significant changes in the refrigerant composition during multiple leaks and recharges. R-410A refrigerant is close to being an azeotropic blend (it behaves like a pure compound or single component refrigerant). The remaining refrigerant charge, in the system, may be used after leaks have occurred and then “top-off” the charge by utilizing the charging charts on the inner control panel cover as a guideline.

REMEMBER: When adding R-410A refrigerant, it must come out of the charging cylinder/tank as a liquid to avoid any fractionation, and to insure optimal system performance. Refer to instructions for the cylinder that is being utilized for proper method of liquid extraction.

WARNING

Failure to conform to these practices could lead to damage, injury or death.

SAFETY PRACTICES:

1.Never mix R-410A with other refrigerants.

2.Use gloves and safety glasses, Polyol Ester oils can be irritating to the skin, and liquid refrigerant will freeze the skin.

3.Never use air and R-410A to leak check; the mixture may become flammable.

4.Do not inhale R-410A – the vapor attacks the nervous system, creating dizziness, loss of coordination and slurred speech. Cardiac irregularities, unconsciousness and ultimate death can result from breathing this concentration.

5.Do not burn R-410A. This decomposition produces hazardous vapors. Evacuate the area if exposed.

6.Use only cylinders rated DOT4BA/4BW 400.

7.Never fill cylinders over 80% of total capacity.

8.Store cylinders in a cool area, out of direct sunlight.

9.Never heat cylinders above 125°F.

10.Never trap liquid R-410A in manifold sets, gauge lines or cylinders. R-410A expands significantly at warmer temperatures. Once a cylinder or line is full of liquid, any further rise in temperature will cause it to burst.

Manual

2100-511

Page

15 of 27

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Contents W18H1 W24H1 W30H1 W36H1 W42H1 W48H1 W60H1 Contents For More INFORMATION, Contact These Publishers Getting Other Information and PublicationsShipping Damage GeneralHeat Pump Wall Mount Model Nomenclature Condensate Drain Duct WorkFilters Fresh AIR IntakeMounting the Unit Wall Mounting InformationSupply Return Right UnitW18H1, W24H1 Mountinginstructions W30H1, W36H1 Mountinginstructions W42H1, W48H1, W60H1 Mountinginstructions W30H1, W36H1, W42H1, W48H1, W60H1 Electric Heat ClearanceWall Mounting Instructions Common Wall Mounting Installations Wiring Main Power Wiring LOW Voltage WiringTAP Range Topping OFF System Charge Safety PracticesPhase Monitor Important Installer NoteHigh & LOW Pressure Switch Three Phase Scroll Compressor Start UP InformationPressure Service Ports Sequence of OperationDefrost Cycle Defrost Control Board Troubleshooting Solid State Heat Pump Control TroubleshootingprocedureTemperature F VS. Resistance R of Temperature Sensor Checking Temperature Sensor Outside Unit CircuitFAN Blade Setting Dimensions Removal of FAN ShroudRefrigerant Charge Cooling Pressure Table Heating Pressures ALL Temperatures FElectrical Specifications W**H Series Indoor Blower Performance RecommendedairflowElectric Heat Tables Maximum ESP of Operation Electric Heat onlyHeater Kits Circuit Breaker Wmcb & Pull Disconnect Wmpd Optional AccessoriesW18, W24 W30, W36 W42, W48, W60 Vent & Control Options
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W60H1, W18H1, W48H1, W30H1, W42H1 specifications

The Bard W24H1D, W24H1, W30H1D, W36H1, and W48H1D are advanced wall-mounted heating and cooling units that exemplify efficiency, performance, and adaptability. These models are particularly suited for residential and light commercial applications, providing excellent temperature control in a variety of settings.

One of the distinguishing features of these Bard units is their robust heat pump technology, which offers both heating and cooling capabilities. This dual-functionality enables users to regulate indoor climates effectively throughout different seasons. Bard's heat pumps are designed for high efficiency, helping to reduce energy consumption and lower utility bills while maintaining comfort.

The W24H1D and W24H1 models are suited for spaces requiring moderate heating and cooling, with their compact design allowing for easy installation in tight spaces. They provide a heating capacity of 24,000 BTU and are capable of delivering exceptional performance even in colder climates. The W30H1D, on the other hand, elevates this performance with a slightly higher output of 30,000 BTU, making it ideal for larger areas or environments with intensified temperature control needs.

For larger applications, the W36H1 and W48H1D models stand out with their impressive heating capacities of 36,000 BTU and 48,000 BTU, respectively. These units are engineered to tackle larger installations with ease, ensuring warmth during harsh winters and refreshing cool air in sweltering summers. The robust construction of these models also contributes to their durability and longevity, making them a cost-effective investment over time.

In addition to their heating and cooling capabilities, these Bard models come equipped with user-friendly interfaces, allowing for easy temperature adjustments. Many units include programmable thermostats that can be customized for different times of the day, enhancing convenience and energy management.

A standout characteristic of the Bard line is their quiet operation. Utilizing sound-dampening technology, these units are designed to minimize noise levels, making them suitable for residential settings where peace and tranquility are essential.

Moreover, Bard’s commitment to efficiency is evident in the design of these units. They adhere to strict energy efficiency guidelines, including the Energy Efficiency Ratio (EER) and Seasonal Energy Efficiency Ratio (SEER) ratings. This attention to energy efficiency not only benefits the environment but also assures users of lower operational costs.

In summary, the Bard W24H1D, W24H1, W30H1D, W36H1, and W48H1D models provide versatile, efficient heating and cooling solutions suitable for various applications. With their advanced technologies and user-friendly features, these units stand out in the HVAC market, offering reliability and comfort year-round.
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