Aprilaire 4231 Yellow Orifice for 400A, 500A, 600A, 500M and 600M Model HumidifiersSid Harvey Item #:4231AA: Replaces Part #:'s : 2323,

Aprilaire 4231AA

Aprilaire 4410 Water Level Sensor Assembly for Aprilaire 400, 400A and 400M Humidifiers, 24 VAC , 5-3/4" L Water level sensor assembly to fit certain Aprilaire models. Fits at the bottom of the scale control insert. It has 2-magnetic reed switches wired in series in it which look for the location of the 2-floats that are sold separately. If both floats are sitting at the bottom of the sump (there is no water in there) the 2-magnetic reed switches will close. This turns the water solenoid valve on and sends water to the top of the pad. Excess water then runs down into the sump causing the 2-floats to float up and break the circuit to the solenoid valve. If either float rises up the level sensor switch will open and close the solenoid valve.

Aprilaire 4410

Aprilaire 4332 Damper Assembly, 5-3/4"

Aprilaire 4332AA

Aprilaire 4223 Drain Spud for 500, 550, 558, 560, 568 Humidifiers

Aprilaire 4223AA

Aprilaire 4331 Water Distribution Tray for 500, 500A, 500M, 600, 600A, 600M Humidifiers

Aprilaire 4331AA

Aprilaire 4236 Black Plastic Scale Control Insert for 560, 560A, 568, 700, 760, 760A and 768 Humidifier

Aprilaire 4236AA

Aprilaire 4235 Plastic Feed Tube and Nozzle, 24" L, 11/64" ID x 1/4" OD

Aprilaire 4235AA

Aprilaire 4336 Resistor Case and Manual Mode Label For Use with 500, 500A, 500M Model Humidifers, 3-1/2" L

Sid Harvey Item #:4336AA: Replaces Part #:'s : 2362,
,

Aprilaire 4336AA

Aprilaire 4238 Replacement Circuit Board for 700/700A/700M, 760/760A, 768 Humidifiers, 120 VAC Primary, 24 VAC Secondary

• This circuit board is located inside the humidifier and controls the small fan motor located in the fan powered humidifier
• Includes wiring harness
• The circuit board also includes a relay and transformer that supply 115 volt to a fan motor and 24 volt to solenoid when needed

Sid Harvey Item #:4238AA: Replaces Part #:'s : 2329,
,

Aprilaire 4238AA

Aprilaire 4335 Plastic Feed Tube with Compression Sleeve, 22" L, 11/64" ID x 1/4" OD

Aprilaire 4335AA

Aprilaire 4237 Humidifier Fan Motor for used with 760, 760A, 768 and 700 humidifiers modelsSid Harvey Item #:4237AA: Replaces Part #:'s : 2328,
,

Aprilaire 4237AA

Aprilaire 4246 Water Distribution Tray for 700, 760, 768 Humidifiers

Aprilaire 4246