Cleveland Controls AFS-222-121 Air Flow Switch has SPDT Contact Arrangement. The switch has a maximum pressure of 1/2 Psi (0.03 bar), voltage of 120-277Vac, and 0.05 ± 0.02" w.c. to 12.0"w.c set point range.
Model AFS-222 Air Pressure Sensing Switch is a proving switch for HVAC, Energy Management and can be used to sense positive, negative, or differential air pressure. The switch enclosure cover prevents accidental contact with the live switch terminal screws and the set point adjusting screw. Enclosure cover accepts a conduit connection of 1/2 inch. The plated housing consists of a calibration spring, diaphragm, and a snap-acting SPDT switch. Also, the sample connections located on each side of the diaphragm accept 1/4" OD metallic tubing via the integral compression ferrule and nut.
Note: Model AFS-222 must be mounted with the diaphragm in any vertical plane in order to obtain the lowest specified operating set point.
| Maximum Pressure | 1/2 psi (0.03 bar) |
|---|---|
| Field Adjustable “Release Range” | 0.04"w.c. to 11.2" w.c |
| Field Adjustable “Operate Range” | 0.07"w.c. to 12.0" w.c |
| Set Point Range | 0.05 +/- 0.02" w.c. to 12.0" w.c |
| Operating Temperature Range | SPDT -40F to 180F (-40 to 82C) |
| Contact Arrangement | SPDT |
| Approval and Recognition | UL, CSA, FM |
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Cleveland Controls AFS-222 Air Pressure Sensing Switch Technical Datasheet
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