The PDS1, Proven Draft Switch, is a fixed
set point (.05"WC) differential pressure switch that is
used in conjunction with Enervex's (formerly Exhausto) Mechanical
Draft Systems. It is used for insufficient draft
protection, so if an unsafe draft condition occurs,
whether this is caused by mechanical or electrical
failure, the switch will shut down the heating
appliance. It is typically used with gas or oil fired
appliances where it can be interlocked with the gas
supply valve or the safety or control circuit of the
appliance.
Maximum Load: 3 Amps @ 120 VAC
Range of Operation: .05 to .50"W.C. ( 13 to 135 Pa)
Temperature Limits: -40°F to +190°F (-40°C to +88°C)
Pressure Connections: Two plastic tubes, outside diameter
of 1/4" (6.0mm)
Construction materials: Housing and switch made of poly-carbonate; Diaphragm is made of NBR (Silicone); Switching contact made of fine silver.
Item Weight: 0.80 LB
Model: PDS 1
The Proven Draft Switch is an adjustable differential pressure switch for use with the Enervex Fan. It is suitable for switching a circuit on, off, or over on changes in actual pressure valve relative to the set references value. The reference value (switching point) is adjustable on a setting wheel provided with a scale. Pressure setting range is .08" W.C. - .60" W.C. This switch has CE type test approval as per CE Gas Appliance, 5 amps @ 120-240 V AC.
Two year factory warranty
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