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Summary of Contents for Aprilaire 720
- Page 1 720 Humidifier Wiring Instructions for Various Applications...
- Page 2 Model 60 Standard Wiring ADHC TERMINAL STRIP POWER INPUTS OUTPUTS NORTH, EAST, OR WEST SIDE OF HOME CAREFULLY REMOVE KNOB AND OUTDOOR COVER TO REVEAL TERMINALS TEMPERATURE SENSOR FOR AUTOMATIC MODE ABOVE EXPECTED SNOW LINE YELLOW WIRES THERMOSTAT OR FURNACE ZONE PANEL 120 VAC EQUIPMENT TERMINALS...
- Page 3 Model 4655 Wired to HUM Terminal CAREFULLY REMOVE KNOB AND COVER TO REVEAL TERMINALS ° HUM TERMINALS MUST BE 24 VAC ° HUM TERMINALS ACTIVATE ONLY ON HEAT CALLS YELLOW WIRES...
- Page 4 Model 4655 Wired to EAC Using Included Transformer CAREFULLY REMOVE KNOB AND COVER TO REVEAL TERMINALS SUPPLIED TRANSFORMER (24 VAC 10 VA MIN.) NOTE: DO NOT WIRE TRANSFORMER INTO FURNACE BLOWER CIRCUIT. ° EAC TERMINALS MAY BE 120 VAC AND MUST BE REDUCED TO 24 VAC BEFORE CONNECTING TO HUMIDIFIER OR HUMIDISTAT °...
- Page 5 Model 4655 with Current Sensing Relay CAREFULLY REMOVE KNOB AND COVER TO REVEAL TERMINALS 24 VAC FURNACE ACCESSORY TERMINALS OR TRANSFORMER (10VA MINIMUM) COMMON MODEL 50 CURRENT SENSING RELAY (IF REQUIRED) FURNACE BLOWER MOTOR YELLOW ° MODEL 50 CURRENT SENSING RELAY SOLD SEPARATELY WIRES °...
- Page 6 Model 4655 with Blower Activation Relay REMOVE WIRE TYPICAL 24 VAC “G” TO “G” TERMINAL STRIP THERMOSTAT IN FURNACE APRILAIRE 4851 RELAY WHITE/YELLOW WHITE/BLUE YELLOW WIRES CONSTANT 24 VAC ° MODEL 4851 BLOWER ACTIVATION RELAY SOLD SEPARATELY 10 VA MIN.
- Page 7 SWITCH 120 VAC SUPPLIED TRANSFORMER (24 VAC 10 VA MIN.) ° MODEL 4592 AIR FLOW PROVING SWITCH SOLD SEPARATELY YELLOW WIRES 90-02841B • 07.24 © 2024 AprilAire | aprilairepartners.com | 800.334.6011 AprilAire reserves the right to change specifications without notice.
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