Anti Short Cycle Timer Test

The 3-minute time delay feature can be bypassed by shorting the TEST pins together.

Heating Mode

When the TEST pins are shorted together for more than 1-second, the control will switch between defrost mode and heating mode (as described in the Defrost Test Procedure section).

Cooling Mode

When the TEST pins are shorted together for more than 1-second, the Anti Short Cycle Timer will be bypassed.

Optional Equipment

A functional checkout should be performed in accordance with the checkout procedures supplied with the equipment.

Adjustment of Refrigerant Charge

WARNING:

This split system heat pump is shipped charged with R410A refrigerant and ready for installation. If repairs make it necessary for evacuation and charging,it should only be attempted by qualified trained personnel thoroughly familiar with this equipment. Under no circumstances should the owner attempt to install and/or service this equipment. Failure to comply with this warning could result in property damage,personal injury, or death.

After refrigerant line connections are completed, it is required that you leak check and evacuate the indoor section and all line connections (using proper methods) before finalizing the full system refrigerant charge.

•To achieve rated capacity and efficiency, the compressor must be exposed to refrigerant for at least 24 hours prior to running and then the compressor must be run for a minimum of 12 hours.

•Cooling mode charging charts are applicable only to matched assemblies of this equipment and listed airflows for the indoor coil. Outdoor units with non- AHRI lsited indoor coils are not recommended and deviations from rated airflows or non-listed combinations may require modification to the expansion device and refrigerant charging procedures for proper and efficient system operation. Refer to Tables 3-9 (pages 11 - 13) and Figures 5-11 (pages 13-16) for correct system charging.

•The refrigerant charge can be checked and adjusted through the service ports provided external to the outdoor unit. Use only gage line sets which have a “Schrader” depression device present to actuate the valve.A common suction port for heating mode charging is included and located on the compressor access panel above the outdoor unit service valves.

•Heat Mode Verification Tables (Tables 10 - 16, pages

18 - 20) are provided for quick reference when the unit is in heating mode and for the inspection of the liquid line pressures and temperatures.

•A high-pressure switch is factory installed and located internally on the compressor discharge line of the outdoor unit. If the discharge pressure rises above 650 psig, the switch will open and de-energize the outdoor unit.

The switch will close again after the discharge pressure decreases to 460 psig. NOTE: When the switch opens and then closes, there will be a 3 minute short cycling delay before the outdoor unit will energize.Under normal conditions the switch is closed

•A low-pressure switch is factory installed and located internally on the suction line of the outdoor unit. The switch is designed to protect the compressor from a loss of charge by interrupting the thermostat inputs to the unit.

NOTE: If the suction pressure falls below 5 psig, the switch will open and de-energize the outdoor unit.The switch will close again when the suction pressure increases above 20 psig. When the switch opens and then closes, there is a 3 minute short cycling delay before the outdoor unit will energize. Under normal conditions the switch is closed.

•The Refrigerant Charging Charts (Figures 6 - 10, pages 13 - 15) are applicable to listed assemblies of equipment and at listed airflows for the indoor coil. Assemblies of indoor coils and outdoor units not listed

are not recommended. To properly charge these units:

1.Read all Installation Instructions first.

2.Complete any brazing operations. (e.g. Split system line-sets)

3.Leak check and evacuate the whole system using proper methods.

4.Purge the nitrogen holding charge.

5.Evacuate the unit to 350-500 microns.

6.Allow the unit to remain under vacuum for at least 30 min.

7.Weigh-In the proper amount of new (or reclaimed) R-410A refrigerant. Refer to Table 2 or the units rating label to determine the correct amount of charge.

•Refrigerant charging charts are applicable only to matched assemblies and listed airflows for the indoor coil. Refer to Figures 6 - 9 (pages 13 - 14) and Table 2 for correct system charge.

•Outdoor units with indoor coils not listed are not recommended. Deviations from rated airflows or non- listed combinations may require modification to the expansion device and refrigerant charging procedures for proper and efficient system operation.

Charging the Unit in AC Mode with Outdoor Temperatures Above 55° F

(for optimized sub-cooling of 10° F to 12° F)

1.With the system operating at steady-state, measure the liquid refrigerant pressure (in psig) at the outdoor unit service valve.

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.