Heat Controller R-410A XVIII. Sequence of Operation 61⁄2 and 71⁄2 TON, XIX. Accessories

Page 17

TABLE 6

REQUIRED OZS. R-410A PER FT. OF TUBING

Tube Size

Liquid

Vapor

O.D., In.

oz/ft

oz/ft

 

 

 

1/2

1.06

0.04

 

 

 

5/8

1.65

0.07

 

 

 

3/4

2.46

0.10

 

 

 

7/8

3.28

0.13

 

 

 

1 1/8

 

0.22

 

 

 

1 3/8

 

0.34

 

 

 

1 5/8

 

0.48

 

 

 

2 1/8

 

0.84

 

 

 

Quantities based on 110°F liquid and 45°F vapor.

BASIC SYSTEM CHARGE*

Unit

Basic System

Model

Charge, Oz. [g] *

 

 

RSG078

178 [5046]

 

 

RSG090

242 [6861]

 

 

*-System with 0 Feet [0] of tubing.

15.Note weight of refrigerant tank.

16.When system has stabilized, check superheat at the suction line service valve. The actual line temperature should be 15° to 25°F higher than the saturation temperature corresponding to the suction pressure. If superheat is measured at evaporator, the actual line temperature should be 15° to 20° higher than the saturation temperature corresponding to the suction pressure.

17.Close service ports on suction and liquid valves. Remove service gauges.

18.Replace service port caps and valve stem caps. These caps must be replaced to prevent leaks.

19.Record total charge quantity on rating plate.

XVIII. SEQUENCE OF OPERATION — 61⁄2 AND 71⁄2 TON

1.When the room temperature is higher than the thermostat setting, the thermostat con- tacts close and energize the compressor contactor (CC) through the high pressure, and low pressure controls. If the unit has “short cycled” and the optional anti-short cycle timer (TDC) has been supplied, the contactor coil (CC) will remain de-energized for up to five (5) minutes.

2.The system will continue cooling operation, as long as the contacts of all safety devices are closed and until the thermostat is satisfied.

3.When the thermostat is satisfied, compressor or contactor (CC) is de-energized.

XIX. ACCESSORIES

A. ANTI-SHORT CYCLE TIMER

ANTI-SHORT-CYCLE TIMER — Prevents restarting of unit for five minutes if shut down for any reason. (See wiring diagram and schematic in this manual for proper location and installation; item TDC.)

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Contents Heatcontroller Table of Contents Safety Information IV. Equipment Protection from the Environment II. IntroductionIII. Checking Product Received WHY USE AN AIR Cooled Split SYSTEM? VI. Standard Unit Features 61⁄2 and 71⁄2 Inspection and Handling VII. InstallationImportant Message to Owner Rooftop Installation Refer to Figure Installation GeneralSlab Installation Order PartsVIII. Refrigerant Piping Data Installation of Piping Typical Piping Recommendations Refrigerant Piping Feet XI. Power Wiring VIX. Wiring Electrical PowerXII. Wire Routing XV. Leak TestingQuick Reference Guide for R-410A Specification of R-410AXVI. R-410A Refrigerant Evaporator Coil Replacement UnitsXVII. Evacuation and Charging Charging Hints XVIII. Sequence of Operation 61⁄2 and 71⁄2 TON XIX. AccessoriesANTI-SHORT Cycle Timer Liquid Line Solenoid Valve Sight Glass / Moisture IndicatorLiquid Pressure Control 61⁄2 TON Condenser Charge ChartsXX. Miscellaneous 71⁄2 TON Condenser with 10 TON Evaporator 155 160 165High Pressure Switch HPC Maintenance and OperationLOW Pressure Switch LPC ContactorFilter 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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