Aprilaire installation instructions WIRING - Model 65 with Model 800 Steam Humidifier

Figure 4 – Recommended Wiring for Model 65 Control and Evaporative Humidifier

MODEL 65 CONTROL	HVAC EQUIPMENT
	ACCESSORY
	TERMINALS

APRILAIRE

EVAPORATIVE

HUMIDIFIER

WIRING – Model 65 with Model 800 Steam Humidifier

The Model 65 control requires 24VAC.. See Figure 6..

1.Disconnect power from the Model 800 and HVAC system.

2.Connect 24VAC to the C and R terminals on the Model 65..

3.Connect the H terminals on the Model 800 to the H terminals on the Model 65.

4.Snap the Model 65 front cover on the back plate. The 4-pin terminal aligns with the terminal block receptacle on the back plate.

5.Proceed to SYSTEM CHECKOUT on page 9..

NOTE: If the Model 800 Steam Humidifier is installed with a Model 850 Fan Pack, the Model 65 Control can be powered from the 24VAC secondary wires on the Model 800 transformer, by splicing into the wires using tap connectors.. See Figure 7..

Figure 6 – Recommended Wiring for Model 65 Control and Model 800 Steam Humidifier

SOLENOID VALVE

CIRCUIT WIRES

90-1669

Figure 5 – Alternate Wiring for Model 65 Control and Evaporative Humidifier

HVAC EQUIPMENT

MODEL 65 CONTROL

COMMON

MOTOR

LEAD

MODEL 65 CONTROL

HVAC EQUIPMENT

HUMIDISTAT

MODEL 800

	HVAC BLOWER
APRILAIRE	MODEL 50
	RELAY
EVAPORATIVE
HUMIDIFIER
	24VAC
SOLENOID VALVE	CONTINUOUSLY
CIRCUIT WIRES	POWERED
	TRANSFORMER
	90-1671
6

STEAM HUMIDIFIER

90-1672

7