Differential Pressure Switch for Humidifiers

Honeywell 50027910-001 pressure switch senses changes in duct air pressure to confirm air movement. This provides a safeguard that airflow is present during the operation of installed 24vac IAQ equipment such as humidifiers.

Specifications

SPST: normally open, snap-acting contacts
Pressure setpoint contacts: change at 0.04 in. W.C.
One common (C), One Normally Open (NO) quick-connect
terminals
Operating Temperature: -40F to 190F (-40C to 88C)
Pressure Sample Taps
Black positive pressure tap. 1/4 in. outside diameter
Grey negative pressure tap. 1/4 in. outside diameter
Use with 1/4 in. inside diameter tubing (10 ft provided)

• Installation Manual