Goodman Mfg R-410A manual Checking External Static Pressure, Checking Temperature Rise

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SERVICING

S-200 CHECKING EXTERNAL STATIC PRESSURE

The minimum and maximum allowable duct static pressure is found in the Technical Information Manual.

Too great of an external static pressure will result in insuffi- cient air that can cause icing of the coil, whereas too much air can cause poor humidity control, and condensate to be pulled off the evaporator coil causing condensate leakage. Too much air can cause motor overloading and in many cases this con- stitutes a poorly designed system. To determine proper air movement, proceed as follows:

1.Using a draft gauge (inclined manometer) measure the static pressure of the return duct at the inlet of the unit, (Negative Pressure).

S-201 CHECKING TEMPERATURE RISE

Temperature rise is related to the BTUH output of the unit and the amount of air (CFM) circulated over the indoor coil.

All units are designed for a given range of temperature increase. This is the temperature of the air leaving the unit minus the temperature of the air entering the unit.

The more air (CFM) being delivered through a given unit the less the rise will be; so the less air (CFM) being delivered, the greater the rise. The temperature rise should be adjusted in accordance to a given unit specifications and its external static pressure.

1.Take entering and leaving air temperatures.

2.Select the proper speed tap from the unit's blower perfor- mance data in the Technical Manual for the specific unit.

3.Take motor amperage draw to determine that the motor is not overloaded during adjustments.

Total External Static

2.Measure the static pressure of the supply duct, (Positive Pressure).

3.Add the two readings together.

NOTE: Both readings may be taken simultaneously and read directly on the manometer as shown in the illustration above, if so desired.

4. Consult proper table for quantity of air.

If the external static pressure exceeds the minimum or maxi- mum allowable statics, check for closed dampers, dirty filters, undersized or poorly laid out ductwork.

T

T

RISE = TSUPPLY -T

Checking Temperature Rise

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Contents Service Instructions Servicing Scheduled MaintenanceProduct Design System Operation16B Checking Fan & Blower Motor ECM Motors Wiring DiagramsImportant Information Recognize Safety SYMBOLS, Words and LabelsSafe Refrigerant Handling Product Identification Part Number Description Fits Models AccessoriesRequires 1 filter Filter Size 16 x 25 xMeasurement in inches MOTORIZED/MANUAL Fresh AIR Dampers Downflow Applications ACCESSORIES*PH1524-60M4Model Model Return SupplyEconomizer GPH13MED103 PGC101/102/103 46 1/4 39 3/8 14 1/2 12 1/2 x 15 x 22 1/2 Roof CurbsLocation & Clearances Product DesignIndoor Blower Motor CompressorsLine Voltage Wiring Electrical WiringCooling Cycle System OperationCooling Heating CycleDefrost Cycle Airflow Adjustments for Indoor Blower MotorFAN Operation CFM Delivery Thermostat Fan Only ModeCFM Trim Adjust Thermostat WiringTypical Heat Pump System in Heating Typical Heat Pump System in CoolingOnce a Month Scheduled MaintenanceOnce a Year Servicing Cooling /HEAT PUMP- Service Analysis GuideLine Voltage NOW Present Checking VoltageIndoor Blower Motor Checking Wiring3B Cooling Anticipator 3C Heating AnticipatorChecking Contactor Contacts Single PhaseThree Phase Checking Transformer and Control CircuitChecking High Pressure Control Checking Loss of Charge ProtectorChecking Capacitor RELAY, Start 15A Resistance Check15B Capacitance Check AmmeterAPH15 M Series Only Checking MotorsChart on Next Chart from Previous GE X13TM Motor Connections 16D Checking GE X13TM MotorsChecking Compressor Windings GPH15 M Series OnlyCompressor Ground Test Testing Compressor Windings17A Resistance Test 17B Ground TestUnloader Test Procedure 17C Unloader Test Procedure17D Operation Test Checking Reversing Valve and Solenoid Testing Crankcase HeaterTesting Defrost Control Testing Defrost ThermostatBrazing Materials Leak Testing Nitrogen or NITROGEN-TRACEDRefrigeration Repair Practice EvacuationAn inaccurately charged system will cause future prob- lems ChargingTXV Valves Final Charge AdjustmentChecking Compressor Efficiency Thermostatic Expansion ValveSuperheat Superheat and Subcooling Adjustment on TXV ApplicationsOverfeeding UnderfeedingHeat Pump Heating Cycle Checking SubcoolingTwo Speed Application *PH1548**-*PH1560 Subcooling = SAT. Liquid TEMP. Liquid Line TempPressure vs. Temperature Chart 410A Required Liquid Line Temperature NON-CONDENSABLES Checking Expansion Valve OperationChecking Restricted Liquid Line Refrigerant OverchargeSuction Line Drier Clean-Up Method Reversing Valve ReplacementTotal External Static Checking Temperature RiseChecking Temperature Rise Checking External Static PressureOT18-60A Outdoor Thermostat Wiring DiagramsRoom Thermostat PH15**M4 Single Phase HKR** Heat KITGPH13MED Economizer for *PH15**M4 Diagrams
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R-410A specifications

Goodman Manufacturing, a well-respected name in the HVAC industry, has made significant advancements with their R-410A refrigerant technology. R-410A, a hydrofluorocarbon (HFC), has positioned itself as a superior alternative to the older R-22 refrigerant, which has been phased out due to its ozone-depleting properties. Goodman’s commitment to energy efficiency and environmental sustainability is well reflected in their use of R-410A in their air conditioning and heat pump systems.

One of the main features of Goodman’s R-410A systems is their exceptional energy efficiency. The R-410A refrigerant operates at a higher pressure than R-22, which allows for better heat transfer and improved cooling capacity. This results in reduced energy consumption and lower utility bills for consumers. Goodman’s air conditioning units designed for use with R-410A are often rated with high Seasonal Energy Efficiency Ratio (SEER) ratings, making them an eco-friendly choice for residential and commercial applications.

Another notable technology employed by Goodman is their commitment to reliable performance through advanced compressor designs. Goodman's scroll compressors are optimized for R-410A, ensuring quieter operation and reducing vibration levels. These compressors are known for their efficiency and longevity, making them a favorite among homeowners seeking dependable and durable climate control solutions.

Goodman's multi-stage cooling systems that utilize R-410A offer precise temperature control and enhanced comfort. By controlling the speed of the compressor, Goodman’s units can adjust output according to the heating or cooling demand, maximizing comfort while minimizing energy waste. This adaptability not only enhances indoor air quality but also contributes to a greener environment by using less energy.

Furthermore, Goodman incorporates high-tech diagnostic controls into their systems. These controls provide real-time performance data, allowing homeowners and technicians to monitor system status and troubleshoot issues more easily. By using R-410A combined with these innovative technologies, Goodman emphasizes reliability and user-friendly operation.

In conclusion, Goodman Manufacturing’s use of R-410A refrigerant reflects their dedication to efficiency, reliability, and environmental stewardship in HVAC solutions. The combination of advanced compressor technologies, high energy efficiency, and innovative controls solidifies Goodman’s reputation as a leader in the industry, offering homeowners and businesses the comfort and peace of mind they deserve.
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