{"product_id":"632622r","title":"632622R Nordyne −1.20″ WC SPST Pressure Switch","description":"\u003ch1\u003e632622R Nordyne −1.20″ WC SPST Pressure Switch\u003c\/h1\u003e\n\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003e632622R is a genuine OEM Nordyne\/Miller pressure switch calibrated to close at −1.20″ water column (WC). It proves inducer draft or differential pressure in M7-series gas furnaces and compatible packaged HVAC equipment, ensuring the control board only allows ignition when proper airflow is established.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSwitch type\u003c\/td\u003e\n\u003ctd\u003eSPST (Single-Pole Single-Throw)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSetpoint\u003c\/td\u003e\n\u003ctd\u003e−1.20″ WC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContact action\u003c\/td\u003e\n\u003ctd\u003eNormally open; closes at setpoint\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContact rating\u003c\/td\u003e\n\u003ctd\u003e1 A @ 120 VAC resistive (verify on data plate)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePressure connection\u003c\/td\u003e\n\u003ctd\u003e1\/4″ OD vacuum hose barb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElectrical terminals\u003c\/td\u003e\n\u003ctd\u003eTwo 1\/4″ male spade quick-connect\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating temperature\u003c\/td\u003e\n\u003ctd\u003e–40 °F to 175 °F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing\u003c\/td\u003e\n\u003ctd\u003eEpoxy-filled die-cast aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.11 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch2\u003eCross-Reference Part Numbers\u003c\/h2\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eOEM Part Number\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e632622R\u003c\/td\u003e\n\u003ctd\u003eCurrent revision\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e632622\u003c\/td\u003e\n\u003ctd\u003eOriginal non-revision “R”\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eFits Nordyne, Miller, Frigidaire, Maytag, White-Westinghouse, Tappan, Intertherm, Gibson, Kelvinator, GrandAire, Philco, Garrison, Mammoth, Medallion and other private-label furnaces requiring a −1.20″ WC SPST pressure switch for inducer draft or flame rollout proving. Always verify the required setpoint and mounting style against the unit’s data plate or service manual before ordering.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch2\u003eTechnician Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eDe-energize all power and shut off the gas supply before servicing.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eDepressurize the inducer housing; confirm zero vacuum at the switch tubing.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003ePhotograph or label existing vacuum tubing routing and terminal connections.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eRemove the old switch from its mounting boss; inspect barb and tubing for debris.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eHand-thread the new 632622R onto the plenum boss; torque to OEM specification.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003ePush 1\/4″ vacuum tubing fully onto the barb; secure with a spring clamp if applicable.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eReconnect control wiring to the spade terminals, ensuring snug, corrosion-free contact.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eRestore power and call for heat; confirm the inducer runs and the switch closes at approximately −1.20″ WC (verify with a manometer).\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eIf the furnace locks out, re-check setpoint with manometer, tubing integrity, and contact continuity.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e","brand":"Quinn","offers":[{"title":"Default Title","offer_id":40298069393474,"sku":"632622R","price":31.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/files\/Nordyne-632622R-Pressure-Switch-1-20-WC-for-M7-Models-replacement-for-632622.b202a2ee145175775c8e6dbce6d9116b_09ecf466-9e24-4a91-9467-ee8c72595749.webp?v=1756255171","url":"https:\/\/hvacpartstore.com\/products\/632622r","provider":"HVACpartstore","version":"1.0","type":"link"}