This is a vacuum shutdown switch which is the stoves way of knowing it has an airflow through the venting in the correct direction. If the vacuum switch does not see a pressure difference it will not remain closed. When it opens, the auger is stopped by depriving the stove of fuel and leading to shut down.

• The vacuum hose from this switch connects to the Exhaust Blower of the stove.
• Will retrofit to older (metal) type switches in our older model pellet units.
• 2006 and later model pellet stoves use 1 ea CU-VS and 1 ea PU-VS. Pre 2006 models use 2 ea PU-VS.
• 0.17" WC PF

Warning: Product may contain materials cautioned by California Proposition 65