GeneralAire GFX3 Installation Manual

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GFX3 Locations Outdoor Sensor Location YES! •� North Wall •� East Wall •� Over Snow Wall •� Inlet of Air Intake •� Less Than 200 Feet From Humidistat NO! •� South Wall •� West Wall •� Below Snow •� Deep in Intake •� More than 200 Feet From Humidistat Wiring Wiring The Outdoor ...

Testing The System 1. Re-assemble system and check all connections. 2. Restore power to the HVAC system. 3. Start HVAC system by raising thermostat setting. 4. Check to see that GFX3 display is on. 5. Set to TEST MODE by pressing “DROP” and “THERMO” together for 5 seconds. The relay w ...

OFFSET Mode To change the calibration of the GFX3, an offset may be entered to the humidity, Indoor Temperature or Outdoor Temperature displays. Press both “UP” and “DOWN” buttons together to enter OFFSET mode. The word “OFFSET” and “RH” will display. Press “UP” or “DOWN” to change the hu ...