Goodmans SSZ, GSZ, ASZ, SSX, ASX, DSZ, DSX, GSX AIR Handler External Static, Initial System Charging

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SERVICING

Mounting the condensing unit above the evaporator coil will require oil traps at equal intervals along the suction line. Install 1 oil trap for a height difference of 15-25 feet between indoor and outdoor units.

Install 2 oil traps for a difference of 26-50 feet, 3 for 51-100 feet, and 4 for 101-150 feet.

Fig 7. Oil Trap Placement

Oil Trap Construction

Long Radius Street Ell

45 °

Ell

45°

Street

Ell

Short Radius

Street Ell

Fig 8. Oil Trap

4.Low voltage wiring. Verify low voltage wiring size is adequate for the length used since it will be increased in a long line application.

Initial System Charging

R-410A condensers are factory charged for 15 feet of line set. To calculate the amount of extra refrigerant (in ounces) needed for a line set over 15 feet, multiply the additional length of line set by 0.6 ounces. Note for the formula below, the linear feet of line set is the actual length of liquid line (or suction line, since both should be equal) used, not the equivalent length calculated for the suction line.

Use subcooling as the primary method for final system charging of long line set system application.

Extra refrigerant needed =

(Linear feet of line set – 15 ft.) x X oz./ft.

Where X = 0.6 for 3/8" liquid tubing

Remember, 3/8" liquid tubing is required for all long line set applications.

Heat pumps should be checked in both heating and cooling mode for proper charge level. This guideline is meant to provide installation instructions based on most common long line set applications. Installation variables may affect system operation.

Follow the charging procedures in the outdoor unit I/O manual to ensure proper superheat and sub-cooling levels, especially on a system with a TXV installed in the indoor unit. Heat pumps should be checked in both heating and cooling mode for proper charge level. This guideline is meant to provide installation instructions based on most common long line set applications. Installation variables may affect system operation.

NO ADDITIONAL COMPRESSOR OIL IS NEEDED FOR LONGLINESETAPPLICATIONSONRESIDENTIALSPLIT SYSTEMS.

S-202 DUCT STATIC PRESSURES AND/OR STATIC PRESSURE DROP ACROSS COILS

This minimum and maximum allowable duct static pressure for the indoor sections are found in the specifications section.

Tables are also provided for each coil, listing quantity of air (CFM) versus static pressure drop across the coil.

Too great an external static pressure will result in insufficient air that can cause icing of the coil. Too much air can cause poor humidity control and condensate to be pulled off the evaporator coil causing condensate leakage. Too much air can also cause motor overloading and in many cases this constitutes a poorly designed system.

S-203 AIR HANDLER EXTERNAL STATIC

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).

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

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Contents Service Instructions Fax us at 713 Fax us at 931 438 Recognize Safety SYMBOLS, Words and LabelsEmail us at customerservice@goodmanmfg.com Important InformationSafe Refrigerant Handling Split System Heat Pumps R410A Product IdentificationModel # Description Split System Air Conditioners R410A ASX130**1AA Single Piece Air Handlers AWUF****1AA MBR/MBE Air Handlers Product Identification 1824 3642 ASX13 AccessoriesDSX/SSX16 ASX18 ASZ13 DSZ/SSZ16 ASZ18 Expansion Valve Kits FSK01A Coil Accessories Electric Heat Kitapplications Aruf Electric Heat Kitapplications Aepf Condensing Unit Product DesignFigure a Capacity Control Cooling Cycle System OperationHeating CoolingHeating Cycle Defrost CycleCooling Cycle System Operation Description AFE18-60A Control BoardCOOLING/HP Analysis Chart Troubleshooting Chart61B ServicingChecking Voltage Checking WiringChecking THERMOSTAT, WIRING, and Anticipator 3A Thermostat and Wiring3C Heating Anticipator 3B Cooling AnticipatorChecking Cycle Protector Checking Time Delay RelayTesting Coil Circuit Checking Transformer Control CircuitChecking Contactor Contacts Testing Compressor ContactorSingle Phase Checking Contactor AND/OR RelaysTesting FAN Relay Copeland Comfort Alert DiagnosticsDiagnostics Table Checking Capacitor Checking Loss of Charge ProtectorChecking High Pressure Control Checking LOW Pressure ControlRELAY, Start 15A Resistance Check15B Capacitance Check 16B Checking FAN and Blower Motor ECM Motors 16A Checking FAN and Blower Motor Windings PSC MotorsChart on Next Chart from Previous 16C Checking ECM Motor Windings 16D ECM CFM Adjustments MBE / AepfCFM GE X13TM Motor Connections 16E Blower Performance Data16F Checking GE X13TM Motors 17B Ground Test Testing Compressor WindingsChecking Compressor 17A Resistance TestCompressor Ground Test 17C Unloader Test ProcedureUnloader Test Procedure 17D Operation TestChecking Reversing Valve and Solenoid Testing Crankcase Heater Optional ItemTesting Defrost Control Testing Defrost ThermostatSequence of Operation 40 MBR/AR*F Electronic Blower Time Delay RelayChecking Heater Limit Controls Checking Heater ElementsHeating Operation MBR/AR*F with Single Stage Heat PumpsMBE/AEPF with Single Stage GSX, ASX and SSX Condensers 41 MBE/AEPF with GSX, SSX, ASX, DSXDefrost Operation 41A MBE/AEPF with Single Stage GSZ, SSZ, & ASZ Heat Pumps MBE/AEPF with TWO Stage ASX & DSX Condensers Sequence of OperationMBE/AEPF with TWO Stage ASZ & DSZ Heat Pump Units Electric Heater Optional Item Formulas 61A Checking Heater Limit Controls61B Checking Heater Fuse Link Optional Electric Heaters Brazing Materials Leak Testing Nitrogen or NITROGEN-TRACEDRefrigeration Repair Practice EvacuationEvacuation ChargingChecking Compressor Efficiency Final Charge AdjustmentTXV Valves 105B Thermostatic Expansion ValvePressure vs. Temperature Chart 410A Required Liquid Line Temperature Checking Subcooling OverfeedingUnderfeeding SuperheatSubcooling Formula = Sat. Liquid Temp. Liquid Line 109A TWO Speed ApplicationChecking Expansion Valve Operation Fixed Orifice Restrictor DevicesCompressor Burnout Checking Restricted Liquid LineOvercharge of Refrigerant NON-CONDENSABLESTube Sizing Accessories for lines greater than 80 feetRefrigerant Piping Long Line SET Application R-410AInstallation Requirements Initial System Charging AIR Handler External StaticStatic Pressure Drop Coil Static Pressure DropTotal External Static ALL Fuel System AFE18-60A Control Board Accessories Wiring Diagrams10kw and Below, One Stage Electric Heat OT/EHR18-60 #2 GRD PLM PLF XFMR-R XFMR-C After Installing Optional Heat KIT, Mark AN X Provided Above HKR Heat Kit GRD PLM PLF
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