The Enervex PDS Proven Draft Switch is a fixed set-point differential pressure switch designed to protect against insufficient or unsafe draft conditions caused by mechanical or electrical failure. Engineered to integrate seamlessly with Enervex Mechanical Draft Systems, the PDS ensures safe operation by shutting down heating appliances in the event of a fan failure.
Ideal for use with gas- and oil-fired appliances, the PDS draft switch can be interlocked with the gas supply valve or safety/control circuit, providing an added layer of protection and compliance. The switch operates by allowing differential pressure to act on a diaphragm against the force of a spring, triggering the microswitch for reliable response.
With its durable construction and precise functionality, the Enervex PDS offers peace of mind, safety, and system integrity for your mechanical draft setup.
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.Â
Standard Equipment:
- Duct KitÂ
Approvals:
The switch is UL recognized product.Â
Warranty:
2-Year Factory Warranty.
Product Information:
- Enervex PDS Proven Draft Switch (PDF, 116KB)Â
