{"product_id":"tjernlund-ps-1505-fan-proving-pressure-switch","title":"Tjernlund PS-1505 Fan Proving Pressure Switch","description":"\u003ch3\u003eDescription:\u003c\/h3\u003e\n\u003cp\u003eThe TJERNLUND PS-1505 Fan Proving Pressure \u003ca href=\"https:\/\/plgautomation.com\/collections\/switches-circuit-protection\"\u003eSwitch\u003c\/a\u003e is used in draft inducer venting systems to verify inducer fan operation before allowing combustion equipment to operate safely. Commonly installed on gas- and oil-fired furnaces, boilers, unit heaters, and other heating appliances equipped with AUTO-DRAFT draft inducers. Maintenance teams, HVAC contractors, and OEMs use this fan proving pressure switch for system integration, retrofit, or replacement of draft inducer safety interlocks in heating and ventilation systems.\u003c\/p\u003e\n\u003ch3\u003eApplications:\u003c\/h3\u003e\n\u003cp\u003eThe TJERNLUND PS-1505 Fan Proving Pressure Switch is commonly used in residential, commercial, and light industrial HVAC systems utilizing mechanical draft inducers. The switch monitors vacuum pressure within the inducer housing and confirms proper fan operation before enabling burner ignition, helping ensure safe and code-compliant operation of gas- and oil-fired heating equipment.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications:\u003c\/h3\u003e\n\u003cp\u003e• Manufacturer: TJERNLUND\u003cbr\u003e• Part number: PS-1505 (PS1505)\u003cbr\u003e• Product type: Fan proving pressure switch\u003cbr\u003e• Switch type: SPST, normally open snap-action contacts\u003cbr\u003e• Contact rating: 125 VA pilot duty at 24 VAC; 300 VA pilot duty at 115–277 VAC\u003cbr\u003e• Maximum switching current: 15 A non-inductive at 277 VAC\u003cbr\u003e• Control set point: Fixed, non-adjustable\u003cbr\u003e• Operating pressure: 0.05 ± 0.02 in. W.C. increasing vacuum\u003cbr\u003e• Maximum pressure: 1\/2 psi\u003cbr\u003e• Mounting position: Diaphragm vertical\u003cbr\u003e• Operating temperature: -40°F to 190°F (-40°C to 88°C)\u003cbr\u003e• Electrical connections: #6-32 screw terminals with cup washers\u003cbr\u003e• Application: Draft inducer safety interlock for gas and oil-fired heating equipment\u003c\/p\u003e\n\u003ch3\u003eCommon Replacements:\u003c\/h3\u003e\n\u003cp\u003e• TJERNLUND PS-1506\u003cbr\u003e• Cleveland Controls NS2 Series\u003cbr\u003e• Dwyer 1950 Series Pressure Switch\u003c\/p\u003e","brand":"Tjernlund","offers":[{"title":"New","offer_id":51714073428270,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_6a8019dc-816c-4f91-ad45-c7245e43f734.jpg?v=1770415629","url":"https:\/\/plgautomation.com\/products\/tjernlund-ps-1505-fan-proving-pressure-switch","provider":"PLG Automation ","version":"1.0","type":"link"}