Carrier 58CTA/CTX instruction manual See notes 2, 11, and 12 on the page following these figures

Page 24

58CT

7

See notes 1, 2, 3, 4, 12, 13, 14, 15, and 17 on the page following these figures

A03182

Fig. 30 - Dual Fuel Thermostat with Two-Stage Furnace

and Two-Speed Heat Pump

See notes 2, 11, and 12 on the page following these figures

A03183

Fig. 31 - Two-Stage Thermostat with Two-Stage Furnace

and Two-Speed Air Conditioner

See notes 1 and 2 on the page following these figures

A03184

Fig. 32 - Single-Stage Thermostat with Two-Stage Furnace and Two-Speed Air Conditioner

NOTES: For Figures 26---32

1.Heat pump MUST have a high pressure switch for dual fuel applications.

2.Refer to outdoor equipment Installation Instructions for additional information and setup procedure.

3.Outdoor Air Temperature Sensor must be attached in all dual fuel applications.

4.Dip switch No. 1 on Thermidistat should be set in OFF position for air conditioner installations. This is factory default.

5.Dip switch No. 1 on Thermidistat should be set in ON position for heat pump installations.

6.Dip switch No. 2 on Thermidistat should be set in OFF position for single---speed compressor operation. This is factory default.

7.Dip switch No. 2 on Thermidistat should be set in ON position for two---speed compressor operation.

8.Configuration Option No. 10 “Dual Fuel Selection” must be turned ON in all dual fuel applications.

9.NO connection should be made to the furnace HUM terminal when using a Thermidistat.

10.Optional connection: If wire is connected, dip switch SW1---2 on furnace control should be set in ON position to allow Thermidistat/Thermostat to control furnace staging.

11.Optional connection: If wire is connected, ACRDJ jumper on furnace control should be removed to allow Thermidistat/Thermostat to control outdoor unit staging.

12.When using both a two---stage furnace and a two---stage heat pump, the furnace must control its own high ---stage heating operation via furnace control algorithm.

13.The RVS Sensing terminal “L” should not be connected. This is internally used to sense defrost operation.

14.DO NOT SELECT the “FURNACE INTERFACE” or “BALANCE POINT” option on the two---speed heat pump control board. This is controlled internally by the Thermidistat/Dual Fuel Thermostat.

15.Dip switch D on Dual Fuel Thermostat should be set in OFF position for single---speed compressor operation. This is factory default.

16.Dip switch D on Dual Fuel Thermostat should be set in ON position for two---speed compressor operation.

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Contents Ama Safety Considerations Furnace Reliability HazardCUT Hazard Dimensions IntroductionClearances to Combustibles Electrostatic Discharge ESD Precautions Procedure Codes and StandardsLocation GeneralCarbon Monoxide Poisoning and Unit Damage Hazard FIRE, Injury or Death Hazard Fire HazardProperty Damage Hazard Location Relative to Cooling EquipmentAIR for Combustion Ventilation Furnace Corrosion HazardCarbon Monoxide Poisoning Hazard Outdoor Combustion Air MethodAir for Combustion, Ventilation, and Dilution for Outdoors Installation Upflow InstallationDownflow Installation Horizontal InstallationFIRE, EXPLOSION, and Carbon Monoxide Poisoning Hazard Suspended Furnace SupportPlatform Furnace Support Roll-Out ProtectionOpening dimensions In. mm Duct FlangesHorizontal Unit Suspension Filter Arrangement Carbon Monoxide Poisoning Hazard AIR DuctsGeneral Requirements Ductwork Acoustical Treatment Supply Air ConnectionsAir Delivery CFM With Filter FurnaceSpeed External Static Pressure IN. WC Size Inlet Air Delivery CFM With Filter* Downflow FurnacesReturn Air Connections GAS Piping Fire or Explosion HazardUpflow Return Air Configurations and Restrictions Maximum Capacity of Pipe Furnace Damage HazardWiring Electrical Connections Electrical Shock HazardElectrical Shock and Fire Hazard Furnace MAY not Operate HazardElectrical Data BOX RelocationElectrical Connection to J-BOX Power Cord Installation in Furnace J-BOX BX. Cable Installation in Furnace J-BOXElectrical Box on Furnace Casing Side. See Fig Fire or Electrical Shock HazardTwo-Stage Furnace with Two-Speed Air Conditioner See notes 2, 11, and 12 on the page following these figures Accessories VentingGeneral Venting Requirements Masonry Chimney RequirementsChimney Inspection Chart Appliance Application Requirements Internal Area of ChimneyVent Height Upflow Application-Vent Elbow Up Downflow Application-Vent Elbow Up then Left Horizontal Left Application Vent Elbow Left Furnace Vent Diameter Vent Height Orientation INPUTBTUH/HRUsing Tin Snips to Cut Tie Points START-UP, ADJUSTMENT, and Safety Check GeneralBurn Hazard Start-Up Procedures AdjustmentsStage Furnace Setup Switch Description Fire and Explosion HazardAltitude Derate Multiplier for U.S.A Redundant Automatic Gas Control ValveOrifice Hole Gas Rate cu ft. /hr Furnace Overheating HazardSeconds Size of Test Dial For Revolution Speed Selection Color Speed AS ShippedCheck Safety Controls ChecklistStage Furnace Blower OFF delay Setup Switch Desired Heating Mode Setup Switch Blower OFF Delay SECA08485 Orifice Size and Manifold Pressures In wc for Gas Input Rate A08219 A08219A Service and Maintenance Procedures IntroductionCare and Maintenance Carbon Monoxide Poisoning and Fire HazardWiring Diagram Cleaning AND/OR Replacing AIR Filter Filter Size Information IN. / MMBlower Motor and Wheel Cleaning Heat Exchanger Unit Damage HazardSequence of Operation Igniter Position-Top View58CT Single-Stage Thermostat and Two-Speed Cooling Adaptive Mode Thermidistat ModeSingle-Speed Cooling Wiring Diagrams TroubleshootingContinuous Blower Mode Troubleshooting Guide 2-Speed KitAdapter Chimneyin Usedswitch Shutoffvent Blocked Catalog No58CT---10SI
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