{"product_id":"resideo-r7910b1040-sola-hydronic-control-circuit-board-module","title":"Resideo R7910B1040 Sola Hydronic Control Circuit Board Module","description":"\u003cp\u003e\u003cstrong\u003e\u003cem\u003eThis product may contain shelf wear, have minor cosmetic imperfections, or have been tested. All our certified pre-owned products are backed by our return policy. We offer free shipping on all items. Please contact us for discounts or if you have any questions. We look forward to doing business with you!\u003c\/em\u003e\u003c\/strong\u003e\u003c\/p\u003e \u003cbr\u003e · Hydronic boiler control system with integrated heat control, flame supervision, and pump control \u003cbr\u003e · Compatible with 10kΩ NTC temperature sensors for outlet, stack, inlet, domestic hot water (DHW), and outdoor temperature sensing \u003cbr\u003e · Supports internal or external spark ignition with primary flame safeguard \u003cbr\u003e · PWM-driven circulation pump control for optimal energy consumption \u003cbr\u003e · Controls gas valve (24Vac) and central heating circulation pump outputs \u003cbr\u003e · Digital and analog inputs for various limit and control functions including stack limit and DHW limit \u003cbr\u003e · Three status LEDs indicating power, flame presence, and alarm \u003cbr\u003e · PID load control with separate heating loops for central heating and domestic hot water \u003cbr\u003e · ModBus communication capability for system setup and diagnostics \u003cbr\u003e · Selectable blower or hot surface ignitor output \u003cbr\u003e · Time-of-day and outdoor reset features for enhanced system efficiency \u003cbr\u003e · UL recognized component (UL372 Primary Safety) \u003cbr\u003e · Enclosure rating: NEMA 1 \/ IP40 \u003cbr\u003e · Electrical ratings: 24Vac or 120Vac operation, 60 Hz, ±5% frequency tolerance \u003cbr\u003e · Compatible with S7910B local keyboard display and S7999B touchscreen display modules for configuration and control (display modules not required for operation)","brand":"Resideo","offers":[{"title":"Default Title","offer_id":43673125945453,"sku":"14193","price":390.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0637\/2419\/1853\/files\/s-l800_574c1ff5-11de-4cdc-b3a9-980287df5b5d.jpg?v=1763348132","url":"https:\/\/willardshvacsupply.com\/products\/resideo-r7910b1040-sola-hydronic-control-circuit-board-module","provider":"Willard's HVAC Supply","version":"1.0","type":"link"}