START UP

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. 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.

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.

START UP NOTES

For improved start up performance, wash the indoor coil with dishwasher detergent.

Manual

2100-467D

Page

15 of 25

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Bard PA13361-B, PA13361-A, PA13241-A, PA13301-A Topping OFF System Charge, Safety Practices, Start UP Notes
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PA13361-B, PA13301-A, PA13241-A, PA13361-A specifications

The Bard PA13361-B, PA13361-A, PA13241-A, and PA13301-A are high-efficiency packaged air conditioning units known for their exceptional performance in residential and commercial settings. These models are designed to provide effective cooling solutions while maximizing energy efficiency and comfort.

One of the standout features of these models is their robust construction, made to withstand varying environmental conditions. The units are engineered with corrosion-resistant materials, making them ideal for both indoor and outdoor applications. This durability ensures that they can operate effectively in diverse climates, providing consistent cooling performance year-round.

The PA13361-B and PA13361-A models are equipped with advanced thermostatic control systems that allow for precise temperature adjustments. This technology enhances user comfort and contributes to energy savings by ensuring the system operates only when needed. Users can easily manage their indoor environment through intuitive controls, making it straightforward to tailor the cooling output to their preferences.

In terms of energy efficiency, these Bard units are designed to operate at low energy consumption levels while delivering powerful cooling capabilities. The integration of high-efficiency compressors and refrigerants contributes substantially to reducing energy costs, making these models an environmentally friendly choice for consumers. With a high Seasonal Energy Efficiency Ratio (SEER), these air conditioning units not only comply with but often exceed industry standards.

The PA13241-A and PA13301-A models introduce enhanced airflow technology, which allows for better air distribution throughout the space. This feature ensures that every corner of the room receives adequate cooling, eliminating hot spots and ensuring comfort for occupants.

Furthermore, the simplicity of installation and maintenance adds to the appeal of these models. Bard units are designed with serviceability in mind, allowing technicians to perform routine maintenance with ease. This accessibility can lead to reduced downtime and enhanced longevity of the equipment.

In summary, the Bard PA13361-B, PA13361-A, PA13241-A, and PA13301-A packaged air conditioning units are robust, efficient, and user-friendly systems. Their advanced features, energy-efficient operation, and durable construction make them a top choice for those seeking reliable cooling solutions in various settings. Whether for residential or commercial use, these models offer performance and comfort that users can depend on.
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