• High side triac switching (B and C only).
• Freezestat protection for HVAC equipment (B and C only).
• Analog outputs (C only).
• Factory configured via EEPROM with critical user parameter default values.
• Uses LonTalk® network (E-Bus) communications protocol.
• High-speed 78 kilobit communications network.
• Conforms with Echelon® LonMark® HVAC Interoperability standard for Roof Top Unit controllers (profile number 8030).
• Free Topology Transceiver (FTT) network technology is insensitive to polarity, simplifying installation.
• Capable of stand-alone operation and has enhanced features available when using the E-Bus network communications.
• Designed for both staged heating/cooling control and modulating heating/cooling control.
• Uses either Series 60 Floating Control or PWM (W7750B only) providing modulating control for heating/cooling equipment.
• Supports two types of economizer control: modulating control and enable/disable control.
• Provides Proportional Integral Derivative (PID) temperature control.
• Uses an adaptive algorithm (patent pending) that continuously adjusts the discharge air setpoint as needed (W7750B only).
• Motion sensor interface for enhanced energy savings.
• Window sensor input for additional energy savings.Constant Volume Air Handling Unit Controller, 3 Heat / 3 Cool, 6 Digital Inputs (relays)| Application Size | 3 Heat / 3 Cool |
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| I/O Count | 6 Digital Outputs (relay), 3 Analog Inputs, 3 Digital Inputs |
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| Overview | The W7750A, B, C are LonMark® compliant Constant Volume Air Handling Unit Controllers used to control single zone and heat pump air handlers. |
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| Contact Ratings | 1.5 A Run @ 24 Vac |
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| Setpoint Temperature Range (F) | 45 F to 99 F |
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| Setpoint Temperature Range (C) | 7 C to 37 C |
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| Used With | See Application Selection Guide (63-7046) |
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| Application | Heat Pump Systems |
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| Network Communications | LonWorks Bus |
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| Commissioning Software | LNS Plug-in |
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| Output Type | Staged On/Off, Floating, Pulse Width Modulation |
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| Dimensions (in.) | 5 5/8 in. high x 6 in. wide x 2 1/8 in. deep |
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| Dimensions (mm) | 143 mm high x 152 mm wide x 54 mm deep |
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| Operating Temperature Range (F) | -40 F to +150 F |
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| Operating Temperature Range (C) | -40 C to +66 C |
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| Shipping Temperature Range (F) | -40 F to +150 F |
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| Shipping Temperature Range (C) | -40 C to +65 C |
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| Operating Humidity Range (% RH) | 5 to 95% RH, non-condensing |
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| Approvals, Underwriters Laboratories Inc | UL 916 (E7741) and cUL (E87741) |
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| Approvals, Federal Communications Commission | Meets FCC part 15 Class B requirements EC Conforms to EN50081-1 (CISPR 22 Class B) and EN50082-1 |
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Product Family
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