The PDS, Proven Draft Switch, is a fixed set point differential pressure switch that provides pressure monitoring in exhaust and ventilation systems. It is used with gas or oil-fixed appliances.

The PDS, Proven Draft Switch, is a fixed set point (.05”WC) differential pressure switch that is used in conjunction with ENERVEX’s fixed speed fan systems. The PDS provides differential pressure monitoring in exhaust and ventilation systems.

What's Included

• 1 x PDS-1 Differential Pressure Switch
• Duct Kit consisting of stack probe with mounting flange and 6 ft silicone tubing.

Features

• Material – The enclosure, the switch housing and the internal switch are made of polycarbonate. The diaphragm is made of NBR (silicone), while the switching contact is made in fine silver.
• Reliable pressure monitoring
• Suitable for air, flue & exhaust gases
• Operates without any auxiliary power

Specifications

Model Number	PDS-1
Item Number	301.1001.0000
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)
Max. Pressure	3 PSI (207 mbar
Wiring Connections	1/4” Solderless Quick Connect Terminals
Pressure Connections	Two plastic tubes, outside diameter of 1/4” (6.0mm)
Weight	9.6 oz. (0.275 kg)
Approvals	The switch is UL recognized product

Technical Drawings & Dimensions

Product Dimensions (in/mm)

Width	5.12" / 130 mm
Depth	3.19" / 81 mm
Height	3.70" / 94 mm

Functional Description

The differential pressure acts via diaphragm against the force of setting spring on the microswitch. The pressure switch operates without any auxiliary power.

Warranty

2-Year Factory Warranty

Documents & Files

• Installation and Operating Manual