The Englander PU-VS is a direct replacement vacuum shut down switch designed to retrofit older metal-type vacuum switches on Englander pellet stoves manufactured before 2006. Rated at 0.17" WC (water column), this switch monitors exhaust blower suction and shuts down the stove if proper draft is not maintained -- a critical safety function that protects against combustion gas backup.
The vacuum shut down switch is a safety component that connects directly to your pellet stove's exhaust blower via a small vacuum hose. If the blower fails or draft pressure drops below the rated threshold, the switch interrupts stove operation before dangerous conditions develop. Replacing a failed or worn switch restores this protection and often resolves stove lockout or no-ignition symptoms caused by a faulty pressure reading.
Part 20091 is also referenced as NBK Parts 20091 and is the correct PU-VS switch for pre-2006 Englander models. Owners of 2006 and later stoves should note the different requirement outlined below.
Replaces original metal-type vacuum switches on pre-2006 Englander pellet stoves with no modification required.
Connects via vacuum hose to the exhaust blower port. Shuts stove down automatically if draft pressure falls below threshold.
Measures 3" x 3-7/16" x 2" and weighs just 0.2 lbs -- easy to handle and install in tight stove enclosures.
Calibrated at 0.17 inches water column -- the correct activation threshold for compatible Englander pellet stove exhaust systems.
This switch fits the following Englander pellet stove models (pre-2006 production):
If your stove model is not listed above, verify your production year and cross-reference with your stove's wiring diagram before ordering.
The PU-VS switch mounts in the same location as the original metal-type switch it replaces. The vacuum hose port on the switch connects to a port on the exhaust blower housing. Always shut off and unplug the stove before servicing. Allow the unit to cool fully before opening the stove cabinet.