Start UP, Topping off system charge, General

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 pressure 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	2100-467K
Page	16 of 24

PA13422-A, PA13482-C, PA13362-A, PA13242-A, PA13602-B specifications

The Bard PA13362-B, PA13482-B, PA13482-A, PA13422-C, and PA13422-B are advanced heating and cooling systems designed to meet the diverse needs of residential and commercial settings. These models are well-regarded for their innovative technologies, efficiency, and reliability.

At the heart of these units is Bard's commitment to superior engineering. The PA13362-B and PA13482-B, for instance, are equipped with powerful compressors that deliver exceptional cooling performance while maintaining energy efficiency. Both models utilize a high-efficiency refrigerant which not only complies with environmental regulations but also enhances their cooling capabilities. Their robust construction ensures durability and longevity, making them a smart investment for users looking for long-term solutions.

The PA13482-A and PA13422-C models are noteworthy for their advanced airflow design, which ensures consistent temperature distribution throughout the space. This is especially beneficial in large areas where temperature fluctuations can be a concern. The designs are optimized to minimize noise levels, providing a tranquil environment without compromising on performance.

Energy efficiency is a hallmark feature across these models. Many units incorporate variable-speed technology, which allows them to adjust their operation based on the specific heating or cooling needs of the environment. This not only reduces energy consumption but also leads to lower utility bills over time. Furthermore, the units are designed with easy maintenance features, enabling users to perform routine checks with minimal effort.

The PA13422-B model stands out with its programmable control options, which allow for customized heating and cooling schedules. This feature is particularly advantageous for businesses and households looking to optimize their energy usage and occupancy comfort. The intuitive interface is user-friendly, ensuring quick access to settings and adjustments.

Overall, Bard's PA series units offer a combination of high performance, efficiency, and user-friendly features. They are suitable for various applications, enhancing comfort in schools, offices, and homes alike. With a focus on innovation and customer satisfaction, Bard continues to set the standard in heating and cooling technology, making their models some of the most reliable choices in the market today.