Residential Gas Furnace Operation - HVAC.Amickracing

Field Wiring Diagram for Single Stage Thermostat and Single Stage Furnace,Outdoor Unit Without TransformerLEGENDRFS.IFCRELAY AREVERSE FLOW SWITCHINTEGRATED FURNACE CONTROLPILOT DUTY RELAY (PROVIDED)NOTES:1. REVERSE FLOW SWITCHES MUST BE INSTALLED ON EACHFURNACE BLOWER HOUSING.2. THERMOSTAT MUST ENERGIZE “G” WITH A CALL FOR HEAT.AS IN ELECTRIC HEAT MODELS.3. CIRCULATING FAN WILL RUN WITH ZERO TIME DELAY ON CALLFOR HEAT.4. 24 VOLT TRANSFORMERS ON FURNACES MUST BE PHASEDPROPERLY.5. IF OUTDOOR UNIT HAS A 24 VOLT TRANSFORMER, ISOLATINGRELAY MUST BE INSTALLED (FIELD SUPPLIED). USE PILOT DUTYRELAY SUCH AS RLY0975.6. INCREASE THERMOSTAT HEAT ANTICIPATOR SETTING. IFAPPLICABLE, BY ADDING THE CURRENT FROM RELAY “A” TO THEANTICIPATOR SETTING SHOWN ON FURNACE WIRING DIAGRAM.SEE NOTE 4From Dwgs. 21B148309 Rev. 1Field Wiring Diagram for Two Stage Thermostat and Single Stage Furnace,Outdoor Unit Without TransformersLEGENDRFS.IFCRELAY AREVERSE FLOW SWITCH (PROVIDED)INTEGRATED FURNACE CONTROLPILOT DUTY RELAY (PROVIDED)NOTES:1. REVERSE FLOW SWITCHES MUST BE INSTALLED ON EACH FURNACEBLOWER HOUSING.2. THERMOSTAT MUST ENERGIZE “G” WITH A CALL FOR HEAT. AS INELECTRIC HEAT MODELS.3. CIRCULATING FAN WILL RUN WITH ZERO TIME DELAY ON CALL FORHEAT.4. 24 VOLT TRANSFORMERS ON FURNACES MUST BE PHASEDPROPERLY.5. IF OUTDOOR UNIT HAS A 24 VOLT TRANSFORMER, ISOLATING RELAYMUST BE INSTALLED (FIELD SUPPLIED). USE PILOT DUTY RELAYSUCH AS RLY0975.6. INCREASE THERMOSTAT HEAT ANTICIPATOR SETTING. IFAPPLICABLE, BY ADDING THE CURRENT FROM RELAY “A” TO THEANTICIPATOR SETTING SHOWN ON FURNACE WIRING DIAGRAM.SEE NOTE 4From Dwgs. 21B148311 Rev. 135