Heat Controller HTS SERIES manual Checking Superheat and Subcooling Determining Superheat

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T h e Q u a l i t y L e a d e r i n C o n d i t i o n i n g A i r

Turn service valves full out CCW (see Table 5) and then turn back in one-half turn to open service ports. Add the required refrigerant so that the total charge calculated for the unit and line set is now in the system. Open the service valve fully counter clockwise so that the stem will backseat and prevent leakage through the schrader port while it is not in use. Start unit in the heating mode and measure superheat and subcooling values after 5 minutes of run time. See tables 14a to 15 for superheat and sub-cooling values. Superheat is measured using suction temperature and pressure at the compressor suction line. Subcooling should be measured using the liquid line temperature immediately outside the compressor section cabinet and either the liquid line service valve pressure or the compressor discharge pressure. Note that different values from tables 14a to 15 will be obtained due to the pressure losses through the condenser heat exchanger. Adding refrigerant will increase sub-cooling while superheat should remain fairly constant allowing for a slight amount

of hunting in TXV systems. This increase in subcooling will require 5 minutes or so of operation before it should be measured. After values are measured, compare to the chart and go to “FINAL EVALUATION.”

PARTIAL CHARGE METHOD - Open service valve fully counterclockwise and then turn back in one-half turn to open service port. Add vaporized (Gas) into the suction side of the compressor until the pressure in the system reaches approximately 60-70 psig (R-22 systems) or 100-120 psig (R-410A systems). Never add liquid refrigerant into the suction side of a compressor. Start the unit in heating and add gas

to the suction port at a rate not to exceed five pounds [2.27 kg] per minute. Keep adding refrigerant until the complete charge has been entered. Superheat is measured using suction temperature and pressure at the compressor suction line. Subcooling should be measured using the liquid line temperature immediately outside the compressor section cabinet and either the liquid line service valve pressure or the compressor discharge pressure. Note that different values from tables 14a to 15 will be obtained due to the pressure losses through the condenser heat exchanger. Adding refrigerant will increase sub-cooling while superheat should remain fairly constant allowing for a slight amount of hunting in TXV systems. This increase in subcooling will require 5 minutes or so of operation before it should be measured. After values are measured, compare to the chart and go to “FINAL EVALUATION.”

FINAL EVALUATION

-In a split system, cooling subcooling values can be misleading depending on the location of the measurement. Therefore, it is recommended that charging be monitored in the heating mode. Charge should be evaluated by monitoring the subcooling in the heating mode. After initial check of heating sub-cooling, shut off unit and allow to sit 3-5 minutes until pressures equalize. Restart unit in the cooling mode and check the cooling superheat against Tables 14a to 15. If unit runs satisfactorily, charging is complete. If unit does not perform to specifications the cooling TXV (air coil side) may need to be readjusted (if possible) until the cooling superheat values are met.

R e s i d e n t i a l S p l i t - 6 0 H z R 4 1 0 A

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Refrigeration Installation

Checking Superheat and Subcooling

Determining Superheat:

1.Measure the temperature of the suction line at a point near the expansion valve bulb.

2.Determine the suction pressure by attaching refrigeration gauges to the suction schrader connection at the compressor.

3.Convert the pressure obtained in step 2 to saturation temperature (boiling point) by using the pressure/ temperature conversion table on the gauge set.

4.Subtract the temperature obtained in step 3 from step 1. The difference will be the superheat of the unit or the total number of degrees above saturation temperature. Refer to Tables 14a to 15 for superheat ranges at specific entering water conditions.

Determining Sub-Cooling:

1.Measure the temperature of the liquid line on the smaller refrigerant line (liquid line) just outside of the cabinet. This location will be adequate for measurement in both modes unless a significant temperature drop in the liquid line is anticipated.

2.Determine the condensor pressure (high side) by attaching refrigerant gauges to the schrader connection on the liquid line service valve. If the hot gas discharge line of the compressor is used, refer to the appropriate column in Tables 14a to 15.

3.Convert the pressure obtained in step 2 to the saturation temperature by using the press/temp conversion table on the gauge set.

4.Subtract the temperature of Step 3 from the temperature of Step 1. The difference will be the sub-cooling value for that unit (total degrees below the saturation temperature). Refer to Tables 14a or 6b for sub-cooling values at specific entering water temperatures.

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Contents GeoLogix HTS Series Split System Two Stage, 2-5 Tons Table of Contents Model Nomenclature for Indoor Split Series Safety SafetyGeneral Information WDG/MWG Indoor Section Matches for Ahri Ratings Equipment SelectionGeneral Indoor Coil Selection HTS GeoLogixSelecting Air Handler Air Handler Selection ExampleIndoor Compressor Section Location InstallationRemoving Existing Condensing Unit Where Applicable Air Handler and Coil InstallationPiping Installation HTS InstallationFlushing the Earth Loop Ground-Loop Heat Pump ApplicationsAntifreeze Ethanol Approximate Fluid Volume U.S. gal. L per 100’ of PipeAntifreeze Percentages by Volume 100% USP food grade Propylene GlycolExpansion Tank and Pump Water Quality StandardsMotorized Modulating Water Control Valve Open Ground-Water Heat Pump Applications026-049 Sizes 064 ClosedWater Quality Standards Water Quality StandardsLine Set Installation Refrigeration InstallationAdd-On Heat Pump Applications Installing the Indoor Coil and LinesetEvacuation and Charging the Unit WDG Charging The System Evacuation Of The Lineset And CoilTotal Charge Method Determining Sub-Cooling Checking Superheat and Subcooling Determining SuperheatHot Water Generator Typical HWG Installation Indoor Compressor SectionWater Tank Preparation InstallationHWG Water Piping Sizes and Length HWG Water PipingWater Tank Refill Initial Start-UpGeoMax 2 HTS Electrical Data Electrical Line VoltageTerminal Strip Low Water Temperature Cutout SelectionAccessory Connections Electrical Low VoltageThermostat Installation Electrical Thermostat WiringThermostat Connections Unit Operation DXM2 ControlsDXM2 Layout and Connections Indoor Split HTS024-060 Wiring Diagram 208-230-/60/1 DXM2 Commissioning Conditions Unit Commissioning And Operating ConditionsOperating Limits Building Operating LimitsUnit Start-Up and Operating Conditions Unit Start-up ProcedureUnit and System Checkout Manual Operation Unit Start-Up ProcedureGPM Unit Operating ConditionsTon Preventive Maintenance Sensor Nominal resistance at various temperatures Basic Troubleshooting InformationSystem Configuration Advanced Troubleshooting and Configuration InformationService Mode Start DXM2 Process Flow ChartFault Htg Clg Possible Cause Solution Functional TroubleshootingIFC Fault Code Symptom Htg Clg Possible Cause Solution Performance Troubleshooting\SH Troubleshooting FormS i d e n t i a l S p l i t 6 0 H z R 4 1 0 a Wellworth Ave., Jackson, Michigan 49203 Ph -0787-2100 Fax

HTS SERIES specifications

The Heat Controller HTS Series is a cutting-edge solution for climate control, designed to offer superior performance and unmatched comfort. This advanced heating and cooling system stands out in today's market due to its innovative technologies and user-friendly features.

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User convenience is paramount in the HTS Series design. It comes with a smart thermostat that enables remote operation via a mobile app, providing users with flexible control over their environment. Additionally, the intuitive interface and programmable settings allow for seamless customization, adapting to your daily schedule and preferences.

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In summary, the Heat Controller HTS Series represents the pinnacle of home heating and cooling technology. With its energy efficiency, precise temperature control, superior air filtration, dual functionality, and user-friendly features, it stands as a leading choice for those seeking reliable and effective climate solutions. This series not only enhances comfort but also supports a sustainable lifestyle for the future.
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