Goodmans GSZ, ASZ, SSX, ASX, DSZ, DSX, GSX, SSZ manual Coil Static Pressure Drop, Total External Static

Page 72

SERVICING

3. Add the two readings together.

TOTAL EXTERNAL STATIC

NOTE: Both readings may be taken simultaneously and read directly on the manometer if so desired.

4. Consult proper table for quantity of air.

If external static pressure is being measured on a furnace to determine airflow, supply static must be taken between the "A" coil and the furnace.

TOTAL EXTERNAL STATIC

S-204 COIL STATIC PRESSURE DROP

1.Using a draft gauge (inclined manometer), connect the positive probe underneath the coil and the negative probe above the coil.

2.A direct reading can be taken of the static pressure drop across the coil.

3.Consult proper table for quantity of air.

STATIC PRESSURE DROP

If the total external static pressure and/or static pressure drop exceeds the maximum or minimum allowable statics, check for closed dampers, dirty filters, undersized or poorly laid out duct work.

72

Image 72

Contents Service Instructions Recognize Safety SYMBOLS, Words and Labels Email us at customerservice@goodmanmfg.comImportant Information Fax us at 713 Fax us at 931 438Safe Refrigerant Handling Product Identification Split System Heat Pumps R410AModel # Description Split System Air Conditioners R410A ASX130**1AA Single Piece Air Handlers AWUF****1AA MBR/MBE Air Handlers Product Identification 1824 3642 Accessories ASX13DSX/SSX16 ASX18 ASZ13 DSZ/SSZ16 ASZ18 Expansion Valve Kits FSK01A Coil Accessories Electric Heat Kitapplications Aruf Electric Heat Kitapplications Aepf Product Design Condensing UnitFigure a Capacity Control System Operation HeatingCooling Cooling CycleDefrost Cycle Heating CycleCooling Cycle System Operation AFE18-60A Control Board DescriptionTroubleshooting Chart COOLING/HP Analysis ChartServicing 61BChecking Wiring Checking THERMOSTAT, WIRING, and Anticipator3A Thermostat and Wiring Checking Voltage3B Cooling Anticipator 3C Heating AnticipatorChecking Time Delay Relay Testing Coil CircuitChecking Transformer Control Circuit Checking Cycle ProtectorTesting Compressor Contactor Single PhaseChecking Contactor AND/OR Relays Checking Contactor ContactsCopeland Comfort Alert Diagnostics Testing FAN RelayDiagnostics Table Checking Loss of Charge Protector Checking High Pressure ControlChecking LOW Pressure Control Checking Capacitor15A Resistance Check 15B Capacitance CheckRELAY, Start 16A Checking FAN and Blower Motor Windings PSC Motors 16B Checking FAN and Blower Motor ECM MotorsChart on Next Chart from Previous 16D ECM CFM Adjustments MBE / Aepf 16C Checking ECM Motor WindingsCFM 16E Blower Performance Data 16F Checking GE X13TM MotorsGE X13TM Motor Connections Testing Compressor Windings Checking Compressor17A Resistance Test 17B Ground Test17C Unloader Test Procedure Unloader Test Procedure17D Operation Test Compressor Ground TestTesting Crankcase Heater Optional Item Testing Defrost ControlTesting Defrost Thermostat Checking Reversing Valve and Solenoid40 MBR/AR*F Electronic Blower Time Delay Relay Checking Heater Limit ControlsChecking Heater Elements Sequence of OperationMBR/AR*F with Single Stage Heat Pumps Heating Operation41 MBE/AEPF with GSX, SSX, ASX, DSX Defrost OperationMBE/AEPF with Single Stage GSX, ASX and SSX Condensers 41A MBE/AEPF with Single Stage GSZ, SSZ, & ASZ Heat Pumps Sequence of Operation MBE/AEPF with TWO Stage ASX & DSX CondensersMBE/AEPF with TWO Stage ASZ & DSZ Heat Pump Units Electric Heater Optional Item 61A Checking Heater Limit Controls 61B Checking Heater Fuse Link Optional Electric HeatersFormulas Leak Testing Nitrogen or NITROGEN-TRACED Refrigeration Repair PracticeEvacuation Brazing MaterialsCharging EvacuationFinal Charge Adjustment Checking Compressor Efficiency105B Thermostatic Expansion Valve TXV ValvesPressure vs. Temperature Chart 410A Required Liquid Line Temperature Overfeeding UnderfeedingSuperheat Checking Subcooling109A TWO Speed Application Checking Expansion Valve OperationFixed Orifice Restrictor Devices Subcooling Formula = Sat. Liquid Temp. Liquid LineChecking Restricted Liquid Line Overcharge of RefrigerantNON-CONDENSABLES Compressor BurnoutAccessories for lines greater than 80 feet Refrigerant PipingLong Line SET Application R-410A Tube SizingInstallation Requirements AIR Handler External Static Initial System ChargingCoil Static Pressure Drop Total External StaticStatic Pressure Drop Accessories Wiring Diagrams ALL Fuel System AFE18-60A Control Board10kw 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