{"product_id":"w7100c1018-honeywell-discharge-air-temperature-controller-2h4c-20-30-vac-vav-system","title":"W7100C1018 | Honeywell Discharge Air Temperature Controller 2H\/4C 20–30 VAC VAV System","description":"\u003ch4\u003eDescription \u003c\/h4\u003e\n\u003cp data-end=\"396\" data-start=\"144\"\u003eThe Honeywell W7100C1018 is a microprocessor-based discharge air temperature controller designed to maintain average discharge air temperature in variable air volume (VAV) systems. Operating on 20–30 VAC, it modulates economizers and sequences up to four stages of cooling and two stages of heating for efficient system balance. Its precision control minimizes kilowatt demand and energy consumption while maintaining occupant comfort and stable airflow conditions.\u003c\/p\u003e\n\u003cp class=\"\" data-end=\"574\" data-start=\"284\"\u003e \u003c\/p\u003e\n\u003cp class=\"\" data-end=\"574\" data-start=\"284\"\u003e \u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications \u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNew\/Never Used Surplus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHoneywell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eControls \u0026amp; Indicators\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eW7100C1018\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubcategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTemperature Controller\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Supply\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20–30 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50\/60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Consumption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e12 VA max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eControl Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDischarge Air Temperature Control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 Heat \/ 4 Cool VAV and make-up air systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStaged On\/Off\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eContact Ratings\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNO: 750 VA @ 120\/240 VAC; 75 VA @ 24 VAC — NC: 240 VA @ 40 VAC; 30 VA @ 24 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReset Signal\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSpace sensor or outdoor air sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAdjustable Setpoint Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e40–90 °F (4–32 °C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAdjustable Control Band\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2–16 °F (–17 to –9 °C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReset Range (Cooling)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5–20 °F (3–11 °C) upward\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReset Range (Heating)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20–80 °F (11–44 °C) upward\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTemperature Operating Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e40–90 °F (4–32 °C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStorage Temperature Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e–40 °F to +150 °F (–40 °C to +65 °C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEconomizer Function\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eModulating, based on enthalpy and temperature\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eExtension Capability\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 6 stages via W7101A sequencer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIndication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLED stage indicators (heating and cooling)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHousing Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMolded high-impact plastic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSurface or panel mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions (H × W × D)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8 5\/8 in × 6 1\/2 in × 3 in (219 × 161 × 76 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCertifications\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUL Recognized (SDFY2 SA481); CSA Certified (400-E-0 46034)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.8 lb (1.27 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eInformation About \u003cspan data-sheets-root=\"1\"\u003eW7100C1018\u003c\/span\u003e\n\u003c\/h4\u003e\n\u003cp\u003eThe W7100C1018 belongs to Honeywell’s W7100 series of discharge air controllers used in multi-stage HVAC systems to regulate temperature output. It is ideal for VAV cooling systems, make-up air systems, and applications requiring tight discharge temperature control. The controller modulates economizers for free cooling when outdoor enthalpy permits and sequences mechanical cooling or heating stages as needed. With built-in restart logic, all stages default to “off” during power interruption and resume with automatic economizer modulation upon power restoration. The W7100C can extend capacity by connecting to a W7101A satellite sequencer, providing up to six additional control stages for complex systems.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMicroprocessor-Based Control: Ensures accurate discharge air temperature management and smooth multi-stage operation.\u003c\/li\u003e\n\u003cli\u003eMulti-Stage Capability: Controls up to 4 cooling and 2 heating stages; expandable by 6 additional stages with a W7101A sequencer.\u003c\/li\u003e\n\u003cli\u003eEconomizer Modulation: Optimizes use of outdoor air for free cooling, reducing compressor operation and energy use.\u003c\/li\u003e\n\u003cli\u003eAutomatic Restart Logic: Returns to a safe, sequenced startup following power restoration—economizer first, then staged cooling.\u003c\/li\u003e\n\u003cli\u003eDual Reset Function: Accepts reset signal from space sensor or outdoor air sensor for dynamic discharge air control.\u003c\/li\u003e\n\u003cli\u003eAdjustable Setpoints: Discharge air temperature adjustable from 40 °F to 90 °F (4 °C–32 °C); adjustable control band 2–16 °F.\u003c\/li\u003e\n\u003cli\u003eStatus Indication LEDs: Front-panel LEDs display active heating or cooling stages for easy monitoring and service.\u003c\/li\u003e\n\u003cli\u003eSafety and Compliance: UL Recognized and CSA Certified for reliable integration in commercial HVAC systems.\u003c\/li\u003e\n\u003cli\u003eWide Application Range: Suitable for electric make-up air units, rooftop systems, or any HVAC requiring discharge temperature regulation.\u003c\/li\u003e\n\u003cli\u003eEnergy Efficiency: Reduces total power demand by activating only the minimum required heating or cooling stages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe W7100C1018 delivers precise and energy-efficient discharge temperature control for advanced air-handling and VAV systems.\u003c\/p\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":49105127538944,"sku":"W7100C1018","price":1468.53,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0388\/5331\/2557\/files\/s-l1600_027680d4-8faa-48d2-90ed-bdee02fdd74c.webp?v=1785540885","url":"https:\/\/alotechparts.com\/products\/w7100c1018-honeywell-discharge-air-temperature-controller-2h4c-20-30-vac-vav-system","provider":"Alo Tech Solutions","version":"1.0","type":"link"}