{"product_id":"cleveland-controls-dns2-1590-00a","title":"Cleveland Controls DNS2-1590-00A High Pressure Switch","description":"\u003cp\u003eThe \u003cstrong\u003eCleveland Controls DNS2-1590-00A High Pressure Switch\u003c\/strong\u003e is a \u003cstrong\u003efactory-calibrated DNS2 Series air pressure switch\u003c\/strong\u003e built to sense \u003cstrong\u003epositive, negative, or differential air pressure\u003c\/strong\u003e and open or close its contacts at a fixed \u003cstrong\u003eset point\u003c\/strong\u003e. It is the \u003cstrong\u003ehigh pressure\u003c\/strong\u003e switch of the \u003cstrong\u003eDNS2-1590\u003c\/strong\u003e pair; its companion is the \u003cstrong\u003eCleveland Controls DNS2-1590-00B Low Pressure Switch\u003c\/strong\u003e, and the two are separate, individually calibrated parts.\u003c\/p\u003e\n\n\u003cp\u003eInside, the \u003cstrong\u003eDNS2\u003c\/strong\u003e uses a \u003cstrong\u003edual-diaphragm sensing element\u003c\/strong\u003e with an \u003cstrong\u003eintegral snap-acting switch\u003c\/strong\u003e in a \u003cstrong\u003eglass-filled polycarbonate housing\u003c\/strong\u003e, which gives it a \u003cstrong\u003enarrow switching differential\u003c\/strong\u003e and stable \u003cstrong\u003eset point\u003c\/strong\u003e across a wide temperature range. The series is calibrated at the factory from \u003cstrong\u003e0.05 to 10.0 in. wc\u003c\/strong\u003e with a tolerance of \u003cstrong\u003e±0.05 in. wc\u003c\/strong\u003e, and it is commonly applied to \u003cstrong\u003etwo-stage furnaces\u003c\/strong\u003e where separate \u003cstrong\u003ehigh-fire and low-fire\u003c\/strong\u003e set points are needed. The pressure ports are \u003cstrong\u003ecolor-coded\u003c\/strong\u003e: \u003cstrong\u003eP1 (positive) is black\u003c\/strong\u003e and \u003cstrong\u003eP2 (negative) is gray\u003c\/strong\u003e, and the electrical connections are \u003cstrong\u003equick-connect terminals\u003c\/strong\u003e. The platform carries \u003cstrong\u003eUL, cUL, CSA, and CE\u003c\/strong\u003e approvals.\u003c\/p\u003e\n\n\u003cp\u003eIn service, a pressure switch like this \u003cstrong\u003eproves airflow or draft\u003c\/strong\u003e before the control is allowed to continue its sequence. If the switch fails to make, the furnace or appliance \u003cstrong\u003elocks out or short-cycles\u003c\/strong\u003e; if it sticks closed, the \u003cstrong\u003esafety proving function\u003c\/strong\u003e is lost, which is why a \u003cstrong\u003efailed or drifted switch\u003c\/strong\u003e should be replaced rather than bypassed.\u003c\/p\u003e\n\n\n\u003cp\u003e\u003cstrong\u003eKey Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFactory-Calibrated Set Point:\u003c\/strong\u003e Each \u003cstrong\u003eDNS2\u003c\/strong\u003e is set and sealed at the factory, so there is nothing to adjust in the field and the \u003cstrong\u003eset point\u003c\/strong\u003e stays put.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eNarrow Differential:\u003c\/strong\u003e The \u003cstrong\u003edual-diaphragm, snap-acting design\u003c\/strong\u003e switches crisply, which helps prevent \u003cstrong\u003echatter\u003c\/strong\u003e and nuisance lockouts near the trip point.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSimple Installation:\u003c\/strong\u003e \u003cstrong\u003eColor-coded P1\/P2 ports\u003c\/strong\u003e and \u003cstrong\u003equick-connect terminals\u003c\/strong\u003e make it a straightforward swap when you transfer the \u003cstrong\u003esample tubing and wiring\u003c\/strong\u003e from the old switch.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAgency Approved:\u003c\/strong\u003e The \u003cstrong\u003eDNS2 Series\u003c\/strong\u003e is listed to \u003cstrong\u003eUL, cUL, CSA, and CE\u003c\/strong\u003e requirements for use in \u003cstrong\u003eHVAC and appliance safety circuits\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eCommon Questions\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eWhat is the difference between DNS2-1590-00A and DNS2-1590-00B?\u003c\/strong\u003e \u003cstrong\u003eDNS2-1590-00A\u003c\/strong\u003e is the \u003cstrong\u003ehigh pressure switch\u003c\/strong\u003e and \u003cstrong\u003eDNS2-1590-00B\u003c\/strong\u003e is the \u003cstrong\u003elow pressure switch\u003c\/strong\u003e. They are separate parts, so order the one that matches the \u003cstrong\u003eletter suffix\u003c\/strong\u003e on the switch you are replacing.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eWhich set point does it use?\u003c\/strong\u003e Every \u003cstrong\u003eDNS2\u003c\/strong\u003e is calibrated to a specific \u003cstrong\u003eset point\u003c\/strong\u003e within the series range of \u003cstrong\u003e0.05 to 10.0 in. wc\u003c\/strong\u003e, so always replace with the exact \u003cstrong\u003eDNS2 part number\u003c\/strong\u003e printed on the original switch label.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eWhere does it connect?\u003c\/strong\u003e The \u003cstrong\u003eP1 (black) positive port\u003c\/strong\u003e and \u003cstrong\u003eP2 (gray) negative port\u003c\/strong\u003e take the \u003cstrong\u003esample line tubing\u003c\/strong\u003e, and the contacts land on \u003cstrong\u003equick-connect terminals\u003c\/strong\u003e. Move the tubing and wires over one at a time so nothing gets crossed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eDisclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.\u003c\/p\u003e","brand":"Cleveland Controls","offers":[{"title":"Default Title","offer_id":67591398949042,"sku":"DNS2-1590-00A","price":97.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1838\/2375\/files\/ac-parts-1000x1000_d8f6c0df-eeb5-4a7f-8ee2-4f92681ea310.webp?v=1755632728","url":"https:\/\/www.gsistore.com\/en-ca\/products\/cleveland-controls-dns2-1590-00a","provider":"GSIstore","version":"1.0","type":"link"}