Tjernlund 950-0016 Vent System Fan ProverThe Tjernlund 950 0016 Vent System Fan Prover is an old style fan proving switch built for SS 2 vent systems. With an external junction box mount, this unit provides straightforward wiring and service prior to operation, reducing installation time and improving safety. This vent system fan prover delivers dependable control, ensuring the exhaust fan only runs when air flow and safety checks are satisfied. It is suited for residential and light

It is a compact HVAC component that fits neatly into the expected mounting footprint

it supports a broad 130–240°F high-limit range and a 200 PSI immersion well for safe hot-water media handling

reliable solution for hydronic systems

Insertion Length: 6 in

000 BTU and 1/2 in

Ideal for service technicians and do-it-yourself replacements

it delivers reliable operation in demanding industrial environments and comes in a versatile NEMA enclosure (RedHat II) for flexible mounting

The 24V AC motor (8 VA) provides a 90-degree rotation for fast

making it a trusted choice for technicians who demand accuracy and reliability from their gas analysis toolkit

Size and installation: 23-5/8" L x 10-13/32" W x 4" H

Temperature rating 32–122°F

reducing hot water fluctuations and scald risk