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SERVICE MANUAL
RSG13
This is a safety alert symbol and should never be ignored. When you see this symbol on labels or in manuals, be alert to
the potential for personal injury or death.
WARNING
Improper installation, adjustment, alteration, service
or maintenance can cause property damage, personal
injury or loss of life. Installation and service must be
performed by a licensed professional HVAC installer (or
equivalent), service agency or the gas supplier.
CAUTION
As with any mechanical equipment, contact with sharp
sheet metal edges can result in personal injury. Take
care while handling this equipment and wear gloves
and protective clothing.
508226-01
Table of Contents
Technical Specifications - RSG13 ...............................2
Refrigerant Metering Device - Indoor Coil ...................3
Installation ...................................................................5
Refrigeration Piping .....................................................8
Electrical Wiring .........................................................17
Sequence of Operation..............................................20
Start-Up .....................................................................20
Maintenance ..............................................................21
Wiring Diagram ..........................................................23
Servicing Units Void of Charge ..................................24
System Refrigerant ....................................................24
Charge Labels ...........................................................27
Start-Up and Performance Checklist .........................28
Electric shock hazard.
Can cause injury or death. Before attempting
to perform any service or maintenance,
turn the electrical power to unit OFF at
disconnect switch(es). Unit may have
multiple power supplies.
*P508226-01*
Issue 2135
WARNING
(P) 508226-01
1
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Related Manuals for COMFORT-AIRE Century RSG13
Summary of Contents for COMFORT-AIRE Century RSG13
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Page 1: Table Of Contents
SERVICE MANUAL RSG13 This is a safety alert symbol and should never be ignored. When you see this symbol on labels or in manuals, be alert to the potential for personal injury or death. Table of Contents Technical Specifications - RSG13 .......2 Refrigerant Metering Device - Indoor Coil ....3 Installation ..............5 Refrigeration Piping .............8... -
Page 2: Technical Specifications - Rsg13
Technical Specifications - RSG13 MODEL NUMBER GUIDE SEER Series/ Residential Split ‘Green’ Gas Capacity S = Scroll Power 13, 14, 16 Revision Condenser System R-410A BTUH x 1000 Compressor 1 = 208/230-1-60 ELECTRICAL AND PHYSICAL DATA Compressor Fan Motor Weight (lbs.) Voltage/ Min. - Page 3 REFRIGERANT CONNECTION SIZES Refrigerant Connection Model Suction Liquid RSG1318 5/8” 3/8” RSG1324 5/8” 3/8” RSG1330 3/4” 3/8” RSG1336 3/4” 3/8” RSG1342 3/4” 3/8” RSG1348 7/8” 3/8” RSG1360 7/8” 3/8” ACCESSORIES DESCRIPTION WHERE USED CATALOG NUMBER Crankcase Heater 18, 24, 30, 36 93M04 Crankcase Heater 42, 48, 60...
- Page 4 NOTE — Plumbing layout and compressor type may vary between model sizes. CONTROL COMPRESSOR DUAL RUN CAPACITOR THERMAL SWITCH GROUND LUG DISCHARGE LINE COMPRESSOR HARNESS CONNECTION CONTACTOR OUTDOOR COIL CUTOUT FOR HIGH VOLTAGE CONDUIT CONTROL WIRE LOOP CRANKCASE HEATER THERMOSTAT CRANKCASE HEATER SUCTION LINE SERVICE VALVE LIQUID LINE SERVICE VALVE...
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Page 5: Refrigerant Metering Device - Indoor Coil
When outdoor unit is connected to factory-approved indoor Refrigerant Metering Device - Indoor Coil unit, outdoor unit contains system refrigerant charge for operation with matching indoor unit when connected by 15 For correct metering device, refer to chart below. ft. of field-supplied tubing. For proper unit operation, check refrigerant charge using charging information located on Indoor control box cover. - Page 6 Clearance Requirements Rooftop Installations When installing, allow sufficient space for airflow clearance, Install unit at a minimum of 6” above surface of the roof wiring, refrigerant piping, and service. For proper airflow, to avoid ice buildup around the unit. Locate the unit quiet operation and maximum efficiency.
- Page 7 The gauges should be rated for use with pressures of 0 - 800 psig on the high side and a low side of 30” vacuum to 250 psig with dampened speed to 500 psi. Gauge hoses must be rated for use at up to 800 psig of pressure with a 4000 psig burst rating.
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Page 8: Refrigeration Piping
Be extra careful with sharp bends. Tubing can “kink” very Refrigeration Piping easily, and if this occurs, the entire tube length will have to be replaced. Extra care at this time will eliminate future service problems. • Use only refrigerant grade copper tubes. •... - Page 9 LINE SET IMPORTANT — Refrigerant lines must not contact structure. INSTALLATION REFRIGERANT LINE SET — INSTALLING Line Set Isolation — The following illustrations are VERTICAL RUNS (NEW CONSTRUCTION SHOWN) examples of proper refrigerant line set isolation: NOTE — Insulate liquid line when it is routed through areas where the surrounding ambient temperature could become higher than the REFRIGERANT LINE SET —...
- Page 10 Installation into an Existing R-22 System Flushing Line Sets If the unit will be installed in an existing system that uses If the unit will be installed in an existing system that uses an indoor unit or line sets charged with R-22 refrigerant, an indoor unit or line sets charged with R-22 refrigerant, installer must perform the following procedures to convert installer must perform the following flushing procedure.
- Page 11 1. Connect gauges and equipment as shown in Figure 7. CYLINDER CONTAINING GAUGE CLEAN R-410A TO BE Set the recovery machine for liquid recovery and start MANIFOLD USED FOR FLUSHING the recovery machine. Open the gauge set valves to (Positioned to deliver liquid refrigerant) allow the recovery machine to pull a vacuum on the HIGH...
- Page 12 Refrigerant Piping - Install Indoor Expansion Valve This outdoor unit is designed for use in systems that include an expansion valve metering device (purchased separately) at the indoor coil. See the Product Specifications for approved expansion valve kit match-ups and application information. The check expansion valve unit can be installed internal or external to the indoor coil.
- Page 13 Refrigerant Piping - Brazing Procedures CAP AND CORE REMOVAL CUT AND DEBUR Cut ends of the refrigerant lines square (free from nicks or dents) Remove service cap and core from and debur the ends. The pipe must remain round. Do not crimp end both the vapor and liquid line service of the line.
- Page 14 WRAP SERVICE VALVES To help protect service valve seals during brazing, wrap water-saturated cloths around service valve bodies and copper tube stubs. Use additional water-saturated cloths underneath the valve body to protect the base paint. FLOW NITROGEN Flow regulated nitrogen (at 1 to 2 psig) through the refrigeration gauge set into the valve stem port connection on the liquid service valve and out of the vapor valve stem port.
- Page 15 Leak Test and Evacuation LEAK TEST HIGH MANIFOLD GAUGE SET OUTDOOR UNIT TO VAPOR SERVICE VALVE NOTE - Position canister to deliver liquid refrigerant. NITROGEN HFC-410A CONNECT GAUGE SET A - Connect the high pressure hose of an HFC-410A manifold gauge set to the vapor valve service port. NOTE - Normally, the high pressure hose is connected to the liquid line port.
- Page 16 EVACUATION HIGH CONNECT GAUGE SET NOTE - Remove cores from service valves (if not already done). A - Connect low side of manifold gauge set with 1/4 SAE in-line tee to vapor line service valve B - Connect high side of manifold gauge set to OUTDOOR MANIFOLD liquid line service valve...
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Page 17: Electrical Wiring
Ground unit at unit disconnect switch or to an earth Electrical Wiring ground. To facilitate conduit, a hole is in the bottom of the control box. Connect conduit to the control box All field wiring must be done in accordance with the National using a proper conduit fitting. - Page 18 HIGH PRESSURE SWITCH (S4) — LIQUID LINE CRANKCASE HEATER (HR1) CRANKCASE THERMOSTAT (S40) Figure 9. Typical Factory Wiring Diagram (Copeland Compressor) 508226-01 Issue 2135...
- Page 19 THERMAL PROTECTION SWITCH (S5 OR S173) HIGH PRESSURE SWITCH (S4) — LIQUID LINE CRANKCASE HEATER (HR1) CRANKCASE THERMOSTAT (S40) Figure 10. Typical Factory Wiring Diagram (Interlink Compressor) 508226-01 Issue 2135...
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Page 20: Sequence Of Operation
Refrigerant Charging Sequence of Operation CAUTION NOTE: The thermostat used may be electromechanical or electronic. Excessive amounts of liquid refrigerant entering the suction line can damage the compressor. When adding NOTE: Transformer in indoor unit supplies power (24 VAC) refrigerant, precautions must be taken to control the to the thermostat and outdoor unit controls. -
Page 21: Maintenance
cooling mode using the subcooling method and table NOTE: All unit table values are based on 70 to 80°F provided on the unit access panel. indoor return air temperature for cooling mode, and 65°F to 75°F return air temperature for heat mode. •... - Page 22 WARNING To prevent personal injury, or damage to panels, unit or structure, be sure to observe the following: While installing or servicing this unit, carefully stow all removed panels out of the way, so that the panels will not cause injury to personnel, nor cause damage to objects or structures nearby, nor will the panels be subjected to damage (e.g., being bent or scratched).
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Page 23: Wiring Diagram
Wiring Diagram Figure 13. Wiring Diagram 508226-01 Issue 2135... -
Page 24: Servicing Units Void Of Charge
Servicing Units Void of Charge System Refrigerant If the outdoor unit is void of refrigerant, clean the system This section outlines procedures for: using the procedure described below. Connecting gauge set for testing and charging; Leak check system using procedure outlined on Page Checking and adjusting indoor airflow;... - Page 25 Adding or Removing Refrigerant This system uses HFC-410A refrigerant which operates at much higher pressures than HCFC-22. The pre-installed liquid line filter drier is approved for use with HFC-410A only. Do not replace it with components designed for use with HCFC-22. This unit is NOT approved for use with coils which use capillary tubes or fixed orifices as a refrigerant metering device.
- Page 26 °F °C Psig °F °C Psig -40.0 11.6 15.6 170.0 -37.2 14.9 18.3 185.0 -34.4 18.5 21.1 201.0 -31.7 22.5 23.9 217.0 -28.9 26.9 26.7 235.0 -26.1 31.7 29.4 254.0 -23.3 36.8 32.2 274.0 -20.6 42.5 35.0 295.0 -17.8 48.6 37.8 317.0 -15.0...
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Page 27: Charge Labels
Figure 15. RSG13 508226-01 Issue 2135... -
Page 28: Start-Up And Performance Checklist
Start-Up and Performance Checklist Job Name _________________________________________ Job no. _____________________________ Date ________________ Job Location ____________________________________________ City ______________________ State ____________________ Installer ________________________________________________ City ______________________ State ____________________ Unit Model No. _____________________ Serial No. __________________________ Service Technician ____________________ Nameplate Voltage __________________________________________________________________________________________ Rated Load Ampacity ________________ Compressor _______________________ Outdoor Fan ________________________ Maximum Fuse or Circuit Breaker _______________________________________________________________________________ □...
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