{"product_id":"honeywell-r7910b1040-sola-hydronic-control-circuit-board-module-2","title":"Honeywell 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\u003cp\u003e\u003cstrong\u003e· 24 Vac or 120 Vac operating voltage models available\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e· Provides heat control, flame supervision, pump control, fan control, boiler control, and electric ignition functions · Supports flame signal sensing via flame rod or ultraviolet (UV) detectors · PID (Proportional-Integral-Derivative) load control for precise temperature regulation · Multiple programmable digital inputs and outputs, including pre-ignition interlock, load\/limit control input, and annunciation with up to 8 programmable alarms · Analog inputs for temperature sensors (NTC 10kΩ or 12kΩ) and other sensors such as 4-20mA signals for remote setpoint and firing rate · Outputs include analog modulation (0-10 VDC, 4-20mA, PWM) and multiple digital outputs controlling combustion blower, ignition, valves, and alarms · Integrated functions for boiler delta-T, stack limit, domestic hot water (DHW) limit, outlet temperature rise limits, anti-condensate protection, frost protection, and slow start · Three status LEDs indicating power, flame, and alarm conditions · Enclosure rating: NEMA 1\/IP40 for indoor use · UL and cUL component recognized (File No. MP268), certified as UL372 Primary Safety · Operating temperature range: -4 to 150 °F (-20 to 66 °C) · Supports remote reset, time-of-day (TOD) functions, ModBus communication via optional interface · Compact and programmable control designed for hydronic heating boiler systems with advanced diagnostics and energy-saving capabilities\u003c\/p\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":43673100058733,"sku":"14072","price":370.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0637\/2419\/1853\/files\/s-l800_3762aa0a-42d0-4773-8cec-fc38870ee6ec.jpg?v=1763347708","url":"https:\/\/willardshvacsupply.com\/products\/honeywell-r7910b1040-sola-hydronic-control-circuit-board-module-2","provider":"Willard's HVAC Supply","version":"1.0","type":"link"}