Archgard Optima PS1 Metal Vacuum Switch- Replaces 305-0047

This metal vacuum switch fits all Archgard Optima PS1 pellet stoves. Replaces part # 305-0047. Note: The mounting may differ for the switch that comes with your stove. You may have to drill new holes to mount this vacuum switch.

Pressure adjustment range from 0.12 to 5.0 WC should be set to approx .15 for most pellet stoves.

The vacuum  switch is a safety switch that shuts the pellet stove down if the combustion (Exhaust) blower fails. If your pellet stove starts up then stops feeding pellets after the start cycle is over, then the vacuum switch is bad or the vacuum line is clogged with ash.  Also, if the auger motor does not turn you may have a bad vacuum switch.

    Most newer stoves use the open terminal and common terminal for the electrical connectors and negative vacuum port. This means the exhaust fan is after the burn pot and connects to the venting and the switch is open until the negative pressure is applied.

    Negative Pressure Hookup

    Clip wires to farthest terminals from knob. Connect hose to low port. For the following pellet stoves.

    • Magnum & Country Flame
    • U.S. Stove
    • Pelpro/Glowboy
    • Englander
    • Breckwell
    • Napoleon
    • Enviro
    • Piazetta
    • Archguard
    • Quadrafire
    • Kozy
    • St Croix
    • Osburn/Enerzone
    • Lopi/ Avalon

    Positive Pressure Hookup

    Clip wires to outer terminals. Connect hose to  Hi port (Bottom port). For the following pellet stoves.

    • Whitfield