{"product_id":"tekmar-274-2-4-stage-atmosp-boiler-control-w-air-make-up-contacts-proof-switch-replaces-264","title":"Tekmar 274 2-4 Stage Atmosp. Boiler Control w\/ Air Make up Contacts \u0026 Proof Switch (Replaces 264)","description":"\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0785\/5895\/3645\/files\/T274_Application_Brochure.pdf\"\u003e274 Application Brochure\u003c\/a\u003e\u003cbr\u003e \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0785\/5895\/3645\/files\/T274_Installation_and_Operation_Manual.pdf\"\u003e274 Installation and Operation Manual\u003c\/a\u003e\u003cbr\u003e \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0785\/5895\/3645\/files\/T274_Submittal_Data.pdf\"\u003e274 Submittal Data\u003c\/a\u003e\u003cbr\u003e \u003cbr\u003e The Boiler Control 274 is designed to stage multiple boilers using Outdoor Temperature Reset. It can be used in applications ranging from a single zone of baseboard, multiple baseboard and fan coil zones, to dedicated domestic hot water heating in commercial buildings. This control regulates a single heating water temperature through Outdoor Temperature Reset and\/or setpoint\/DHW target control. It is capable of controlling (stage and rotate) up to 4 on\/off boilers as well as the system pump (pump sequencing option).","brand":"Tekmar","offers":[{"title":"Default Title","offer_id":47344169418925,"sku":"50403","price":799.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0785\/5895\/3645\/files\/Tekmar260.6.jpg?v=1787904229","url":"https:\/\/www.bostonheatingsupply.com\/products\/tekmar-274-2-4-stage-atmosp-boiler-control-w-air-make-up-contacts-proof-switch-replaces-264","provider":"Boston Heating Supply","version":"1.0","type":"link"}