Heat Controller R-410A XVII. Evacuation and Charging, Replacement Units, Evaporator Coil

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D. REPLACEMENT UNITS

To prevent failure of a new condensing unit, the existing evaporator tubing system must be correctly sized and cleaned or replaced. Care must be exercised that the expansion device is not plugged. For new and replacement units, a liquid line filter drier should be installed and refrigerant tubing should be properly sized. Test the oil for acid. If positive, a suction line filter drier is mandatory.

IMPORTANT: WHEN REPLACING AN R-22 UNIT WITH AN R-410A UNIT, EITHER

REPLACE THE LINE SET OR ENSURE THAT THE EXISTING LINE SET IS THOR-

OUGHLY CLEANED OF ANY OLD OIL OR DEBRIS.

!CAUTION

Only use evaporators approved for use on R-410A systems. Use of existing R-22 evaporators can introduce mineral oil to the R-410A refrigerant forming two differ- ent liquids and decreasing oil return to the compressor. This can result in com- pressor failure.

E. EVAPORATOR COIL

REFER TO EVAPORATOR COIL MANUFACTURER’S INSTALLATION INSTRUC-

TIONS:

IMPORTANT: The manufacturer is not responsible for the performance and operation of a mismatched system, or for a match listed with another manufacturer’s coil.

XVII. EVACUATION AND CHARGING

The evacuation of any system component that has been exposed to atmosphere or lost its charge is essential before charging. Never attempt to operate a system while it is under a vacuum.

FIGURE 9

TYPICAL FIELD WIRING CONNECTIONS — 61⁄2 AND 71⁄2 TON

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Contents Heatcontroller Table of Contents Safety Information II. Introduction III. Checking Product ReceivedIV. Equipment Protection from the Environment WHY USE AN AIR Cooled Split SYSTEM? VI. Standard Unit Features 61⁄2 and 71⁄2 VII. Installation Important Message to OwnerInspection and Handling Order Parts Installation GeneralRooftop Installation Refer to Figure Slab InstallationVIII. Refrigerant Piping Data Installation of Piping Typical Piping Recommendations Refrigerant Piping Feet XV. Leak Testing VIX. Wiring Electrical PowerXI. Power Wiring XII. Wire RoutingSpecification of R-410A XVI. R-410A RefrigerantQuick Reference Guide for R-410A Replacement Units XVII. Evacuation and ChargingEvaporator Coil Charging Hints XIX. Accessories ANTI-SHORT Cycle TimerXVIII. Sequence of Operation 61⁄2 and 71⁄2 TON Sight Glass / Moisture Indicator Liquid Pressure ControlLiquid Line Solenoid Valve Charge Charts XX. Miscellaneous61⁄2 TON Condenser 71⁄2 TON Condenser with 10 TON Evaporator 155 160 165Contactor Maintenance and OperationHigh Pressure Switch HPC LOW Pressure Switch LPCFilter Troubleshooting
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R-410A specifications

The Heat Controller R-410A is an advanced refrigerant used in various heating and cooling applications, particularly in residential and commercial air conditioning systems. Recognized for its efficiency and eco-friendliness, R-410A has become a popular choice among HVAC manufacturers and professionals.

One of the main features of R-410A is its high efficiency. It operates at a higher pressure than traditional refrigerants, which allows it to transfer heat more effectively. This results in improved energy efficiency ratings (SEER and EER) for systems utilizing R-410A, leading to lower energy bills and reduced environmental impact.

R-410A is also known for its environmental sustainability. Unlike its predecessor, R-22, R-410A has zero ozone depletion potential (ODP) due to its composition of hydrofluorocarbons (HFCs). Although it does have a global warming potential (GWP), the advancements in technology have made R-410A a more environmentally friendly option compared to many older refrigerants.

Developed through innovative technological advancements, R-410A systems often incorporate variable speed compressors and efficient heat exchangers. These technologies allow for better modulation of cooling and heating outputs, ensuring that the indoor environment remains comfortable while using the least amount of energy possible.

Another significant characteristic of R-410A is its compatibility with a wide range of HVAC equipment. Many new air conditioning systems are designed specifically to use R-410A, which has led to the creation of a robust market for these units. Additionally, R-410A systems tend to require less maintenance and have longer lifespans compared to those using older refrigerants.

Safety is another consideration for R-410A users. While R-410A is non-toxic and non-flammable, technicians who work with this refrigerant need to be trained and certified due to its high-pressure properties. Proper handling and installation are crucial to ensure system efficiency and reliability.

In summary, the Heat Controller R-410A stands out in the HVAC industry for its efficiency, environmental benefits, advanced technologies, and compatibility with modern systems. As the industry continues to evolve, R-410A remains a key player, paving the way towards more sustainable and efficient heating and cooling solutions.
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