{"product_id":"weil-mclain-511-624-532","title":"Weil McLain 511-624-532 Pressure Switch","description":"\u003cp\u003eThe \u003cstrong\u003eWeil McLain 511-624-532 Differential Pressure Switch\u003c\/strong\u003e is an \u003cstrong\u003eSPST\u003c\/strong\u003e switch with a \u003cstrong\u003e0.30 inch W.C.\u003c\/strong\u003e \u003cstrong\u003eset point\u003c\/strong\u003e, rated for installations from \u003cstrong\u003esea level to 4,000 ft\u003c\/strong\u003e. In \u003cstrong\u003eWeil McLain\u003c\/strong\u003e's \u003cstrong\u003eAHE\u003c\/strong\u003e parts list it is the pressure switch shown for the \u003cstrong\u003eAHE-60\u003c\/strong\u003e, which makes it a manufacturer-specified part and not a general-purpose cross-fit. The switch is supplied on a mounting \u003cstrong\u003ebracket\u003c\/strong\u003e, as shown in the photo.\u003c\/p\u003e\n\n\u003cp\u003eA \u003cstrong\u003edifferential pressure switch\u003c\/strong\u003e like the \u003cstrong\u003e511-624-532\u003c\/strong\u003e monitors the pressure difference created by the combustion air blower and closes its contacts when that difference reaches the \u003cstrong\u003eset point\u003c\/strong\u003e. The boiler control reads that closure as proof that combustion air is moving, and only then does it continue the ignition sequence. \u003cstrong\u003eSPST\u003c\/strong\u003e means single pole, single throw, so there is one set of contacts that is either open or closed. If airflow falls below the \u003cstrong\u003eset point\u003c\/strong\u003e because of a blocked vent, a restricted intake or a failing blower, the contacts open and the control holds the burner off.\u003c\/p\u003e\n\n\u003cp\u003eSet point and elevation range are both part of the specification, and they differ between models. \u003cstrong\u003eWeil McLain\u003c\/strong\u003e also lists \u003cstrong\u003e511-624-530\u003c\/strong\u003e as a \u003cstrong\u003e0.35 inch W.C.\u003c\/strong\u003e switch for the \u003cstrong\u003eAHE-45\u003c\/strong\u003e, and the two are not interchangeable with \u003cstrong\u003e511-624-532\u003c\/strong\u003e. Confirm the \u003cstrong\u003eset point\u003c\/strong\u003e printed on the switch you are replacing before you order, and never bypass the switch to run the boiler.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eKey Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAHE-60 Specific:\u003c\/strong\u003e \u003cstrong\u003eWeil McLain\u003c\/strong\u003e's \u003cstrong\u003eAHE\u003c\/strong\u003e parts list shows \u003cstrong\u003e511-624-532\u003c\/strong\u003e as the pressure switch for the \u003cstrong\u003eAHE-60\u003c\/strong\u003e, so you are ordering the manufacturer's own part.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003e0.30 Inch W.C. Set Point:\u003c\/strong\u003e The proving point is matched to the boiler's combustion air system, with a rated range from \u003cstrong\u003esea level to 4,000 ft\u003c\/strong\u003e.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSimple SPST Contacts:\u003c\/strong\u003e A single set of contacts that closes on adequate airflow keeps the wiring straightforward and easy to check with a meter.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMounting Bracket Included:\u003c\/strong\u003e Supplied on its \u003cstrong\u003ebracket\u003c\/strong\u003e so it can be mounted the way the original switch was.\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 set point of the 511-624-532?\u003c\/strong\u003e \u003cstrong\u003e0.30 inch W.C.\u003c\/strong\u003e, \u003cstrong\u003eSPST\u003c\/strong\u003e, rated for \u003cstrong\u003esea level to 4,000 ft\u003c\/strong\u003e.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eIs it the same as 511-624-530?\u003c\/strong\u003e No. The \u003cstrong\u003e511-624-530\u003c\/strong\u003e is a \u003cstrong\u003e0.35 inch W.C.\u003c\/strong\u003e switch that \u003cstrong\u003eWeil McLain\u003c\/strong\u003e lists for the \u003cstrong\u003eAHE-45\u003c\/strong\u003e. The \u003cstrong\u003e511-624-532\u003c\/strong\u003e is the \u003cstrong\u003e0.30 inch W.C.\u003c\/strong\u003e switch listed for the \u003cstrong\u003eAHE-60\u003c\/strong\u003e.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eWhich boiler uses the 511-624-532?\u003c\/strong\u003e The \u003cstrong\u003eWeil McLain\u003c\/strong\u003e \u003cstrong\u003eAHE\u003c\/strong\u003e parts list shows it for the \u003cstrong\u003eAHE-60\u003c\/strong\u003e. Send us your boiler model and serial number if you want our team to double-check fit before you buy.\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\n","brand":"Weil McLain","offers":[{"title":"Default Title","offer_id":68008918286514,"sku":"511-624-532","price":86.87,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1838\/2375\/files\/511-624-532.jpg?v=1794513074","url":"https:\/\/www.gsistore.com\/products\/weil-mclain-511-624-532","provider":"GSIstore","version":"1.0","type":"link"}