W7100C1018 | Honeywell Discharge Air Temperature Controller 2H/4C 20–30 VAC VAV System

Honeywell · PLCs & Industrial Controllers

Description  The 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.     Technical Specifications  Condition New/Never Used Surplus Brand Honeywell Category Controls & Indicators Part Number W7100C1018 Subcategory Temperature Controller Power Supply 20–30 VAC Frequency 50/60 Hz Power Consumption 12 VA max Control Type Discharge Air Temperature Control Application 2 Heat / 4 Cool VAV and make-up air systems Output Type Staged On/Off Contact Ratings NO: 750 VA @ 120/240 VAC; 75 VA @ 24 VAC — NC: 240 VA @ 40 VAC; 30 VA @ 24 VAC Reset Signal Space sensor or outdoor air sensor Adjustable Setpoint Range 40–90 °F (4–32 °C) Adjustable Control Band 2–16 °F (–17 to –9 °C) Reset Range (Cooling) 5–20 °F (3–11 °C) upward Reset Range (Heating) 20–80 °F (11–44 °C) upward Temperature Operating Range 40–90 °F (4–32 °C) Storage Temperature Range –40 °F to +150 °F (–40 °C to +65 °C) Economizer Function Modulating, based on enthalpy and temperature Extension Capability Up to 6 stages via W7101A sequencer Indication LED stage indicators (heating and cooling) Housing Material Molded high-impact plastic Mounting Surface or panel mount Dimensions (H × W × D) 8 5/8 in × 6 1/2 in × 3 in (219 × 161 × 76 mm) Certifications UL Recognized (SDFY2 SA481); CSA Certified (400-E-0 46034) Weight 2.8 lb (1.27 kg)   Information About W7100C1018 The 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. Key Features: Microprocessor-Based Control: Ensures accurate discharge air temperature management and smooth multi-stage operation. Multi-Stage Capability: Controls up to 4 cooling and 2 heating stages; expandable by 6 additional stages with a W7101A sequencer. Economizer Modulation: Optimizes use of outdoor air for free cooling, reducing compressor operation and energy use. Automatic Restart Logic: Returns to a safe, sequenced startup following power restoration—economizer first, then staged cooling. Dual Reset Function: Accepts reset signal from space sensor or outdoor air sensor for dynamic discharge air control. Adjustable Setpoints: Discharge air temperature adjustable from 40 °F to 90 °F (4 °C–32 °C); adjustable control band 2–16 °F. Status Indication LEDs: Front-panel LEDs display active heating or cooling stages for easy monitoring and service. Safety and Compliance: UL Recognized and CSA Certified for reliable integration in commercial HVAC systems. Wide Application Range: Suitable for electric make-up air units, rooftop systems, or any HVAC requiring discharge temperature regulation. Energy Efficiency: Reduces total power demand by activating only the minimum required heating or cooling stages. The W7100C1018 delivers precise and energy-efficient discharge temperature control for advanced air-handling and VAV systems.

Brand: Honeywell · Category: PLCs & Industrial Controllers

Key features

• Microprocessor-Based Control: Ensures accurate discharge air temperature management and smooth multi-stage operation.
• Multi-Stage Capability: Controls up to 4 cooling and 2 heating stages; expandable by 6 additional stages with a W7101A sequencer.
• Economizer Modulation: Optimizes use of outdoor air for free cooling, reducing compressor operation and energy use.
• Automatic Restart Logic: Returns to a safe, sequenced startup following power restoration—economizer first, then staged cooling.
• Dual Reset Function: Accepts reset signal from space sensor or outdoor air sensor for dynamic discharge air control.
• Adjustable Setpoints: Discharge air temperature adjustable from 40 °F to 90 °F (4 °C–32 °C); adjustable control band 2–16 °F.
• Status Indication LEDs: Front-panel LEDs display active heating or cooling stages for easy monitoring and service.
• Safety and Compliance: UL Recognized and CSA Certified for reliable integration in commercial HVAC systems.
• Wide Application Range: Suitable for electric make-up air units, rooftop systems, or any HVAC requiring discharge temperature regulation.
• Energy Efficiency: Reduces total power demand by activating only the minimum required heating or cooling stages.

Specifications

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