Goodman Mfg RT6100004R13 manual Reversing Valve Replacement, System Charging

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SERVICING

3.An oil trap is required at the evaporator only if the condenser is above the evaporator. Preformed oil traps are available at most HVAC supply houses, or oil traps may be created by brazing tubing elbows together (see diagram below). Remember to add the equivalent length from oil traps to the equivalent length calculation of the suction line. For example, if you construct an oil trap using two 45° elbows, one short and one long 90° elbow in a ¾” diameter suction line, the additional equivalent length would be 0.7+ 0.7+1.7+1.5, which equals 4.6 feet (refer to table 9).

Oil Trap Construction

Long Radius Street Ell

45 °

Ell

45°

Street

Ell

Short Radius

Street Ell

Fig 7. 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.

System Charging

R22 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.

Extra refrigerant needed =

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

Where X = 0.6 for 3/8" liquid tubing

Remember, for condensers with a liquid valve connection less than 3/8" diameter, 3/8" liquid tubing is required for a line set longer than 25 feet.

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 opera- tion.

NO ADDITIONAL COMPRESSOR OIL IS NEEDED FOR

LONG LINE SET APPLICATIONS

ON RESIDENTIAL SPLIT SYSTEMS.

S-122 REVERSING VALVE REPLACEMENT

Remove the refrigerant charge from the system.

When brazing a reversing valve into the system, it is of extreme importance that the temperature of the valve does not exceed 250° F. at any time.

Wrap the reversing valve with a large rag saturated with water. "Re-wet" the rag and thoroughly cool the valve after each brazing operation of the four joints involved. The wet rag around the reversing valve will eliminate conducting of heat to the valve body when brazing the line connection.

The use of a wet rag sometimes can be a nuisance. There are commercial grades of heat absorbing paste that may be substituted.

After the valve has been installed leak test, evacuate and recharge.

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.

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Contents Service Instructions Important Information Table of ContentsSafe Refrigerant Handling Split System Air Conditioners R-22 Product IdentificationSplit System Air Conditioners R-22 Split System Heat Pumps R-22 Product Identification Single Piece Air Handlers Single Piece Air Handlers MBR/MBE Air Handlers 036 036 120 3642 1824 ASC01 AccessoriesCPKF24 CPKF36 CPKF42 CPKF48 CPKF60 CPKF61 Expansion Valve Kits FSK01A Coil Accessories Condensing Unit Product DesignProduct Design Heating System OperationCooling Cycle System Operation Indoor Coil Outdoor Thermostatic Expansion Valve Description AFE18-60A Control BoardCOOLING/HP Analysis Chart Troubleshooting ChartServicing Table of Contents Servicing Checking 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 ContactorTesting FAN Relay Checking Contactor AND/OR RelaysApplies to ASC13 & ASH13 Copeland Comfort Alert DiagnosticsRed Trip Diagnostics TableChecking Capacitor Hard Start KIT WiringTesting Capacitor Resistance Checking Loss of Charge Protector16B Checking FAN and Blower Motor ECM Motors Testing Capacitance15B Capacitance Check 16A Checking FAN and Blower Motor Windings PSC Motors16C Checking ECM Motor Windings 16D ECM CFM AdjustmentsChart on Next Chart from Previous Itc h GE X13TM Motor Connections 16E Checking GE X13TM MotorsChecking Compressor 17A Resistance TestCompressor Ground Test Testing Compressor Windings17B Ground Test 17D Operation TestChecking Reversing Valve and Solenoid Testing Crankcase Heater Optional ItemTesting Defrost Control Testing Defrost ThermostatAR*F & MBR With Single Stage Heat Pumps 40 AR*F & MBR Electronic Blowers Time Delay RelaySequence of Operation AR*F & MBR With Single Stage Condensers41 AEP* & MBE with Single Stage CON Densers AEP* & MBE Electronic Blower Time Delay Relay41A AEP* & MBE with Single Stage Heat Pumps Electric Heater Optional Item 61A Checking Heater Limit Controls Temperature Rise F @ CFMRefrigeration Repair Practice Leak Testing Nitrogen or NITROGEN-TRACED61B Checking Heater Fuse Link Optional Electric Heaters Checking Heater ElementsEvacuation EvacuationCharging An inaccurately charged system will cause future prob- lems Checking Compressor Efficiency105B Thermostatic Expansion Valve Thermostatic Expansion Valves OverfeedingUnderfeeding SuperheatChecking Expansion Valve Operation Checking SubcoolingCompressor Burnout Overcharge of RefrigerantChecking Restricted Liquid Line NON-CONDENSABLESRefrigerant Piping Suction Line Drier Clean-Up MethodInstallation Requirements System Charging Reversing Valve ReplacementStatic Pressure Drop AIR Handler External StaticCoil Static Pressure Drop Total External StaticALL Fuel System Control Board AFE18-60A Accessories Wiring DiagramsALL Fuel System AFE18-60A Control Board 10kw 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 Accessories Wiring Diagrams
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