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IEC 24 VOLT FAN COIL DIGITAL THERMOSTAT 7 DAY PROGRAMMABLE 2 OR 4 PIPE - Refrisource.com
Thermostat – Venstar
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Document DEVICE REPORTE055-71520316-TS2/4/22, 3:37 PM Thermostat Venstar This page updated 24 November 2020. Thermostat Venstar IEC announces the addition of its new Wi-Fi 24 Volt Fan Coil Thermostat to its successful Venstar product family. Click picture below to open Owner Manual. Above: IEC Non-Programmable 24V Thermostat w/ IEC Logo (IEC # E055-71520316). https://expert.iecokc.com/index.html#!Modules/4/Documents/thermostatvenstar.htm 1/9 2/4/22, 3:37 PM Thermostat Venstar Above: IEC thermostat with tamper-proof locking cover. The cover is held in place with tamper-proof hex screws on both left and right sides. Product Features: · Programmable and Non-Programmable Models · "Programmable" means 7-Day Programming, suitable for residential or commercial applications · "Non-Programmable" means there is no clock or calendar, suitable for hospitality applications · 2- or 4-pipe Applications · Automatic Staging or Manual 3 Speed Fan Operation · Large, Easy to Read Thermaglowtm Display · 7-day Programmable with 4 Time Periods per Day · Copy Day Command · Auto-Changeover · Neverlosttm Memory · Heating and Cooling Indicator Light · Zone Temperature Control to 1-degree Accuracy · Outside Air Display with Optional Outdoor Air Sensor · Celsius or Fahrenheit Display · Adjustable Deadband in One Degree Increments · Title 24 Compliance · Dry Contact Input for Occupied/Unoccupied · Alarm Contact for Condensate Overflow · Keypad Lockout Option Part Number Table below updated 11/24/2020. Added Wi-Fi models. OBSOLETE items marked in Yellow may be available as service parts items only. Use new items for new projects. Note: replacing thermostat with new model requires (A) rewire of existing relay board, or (B) replace relay board. Discussion: Previous models of the thermostat (71520301 through 71520305) used a residential sequence of operation for fan speed control (G=Lo, G+G2=Med, G+G3=High) which required use of a special fan relay board (71520303) unique in design to match the thermostat. This design made the unit controls incompatible with the majority of commercial fan coil thermostats and DDC systems. New thermostat models (71520316 through 71520319) use a natural sequence of operation (Lo, Med, High) for fan speed control, hence new installations will allow the fan coil unit control box to use common relay components, and be compatible with future thermostat upgrades. Model Wi-Fi Enabled No IEC Logo Wi-Fi Enabled With IEC Logo IEC Part # E055-71520325 E055-71520330 Programmable 7-Day 24V with IEC Logo Programmable 7-Day 24V No Logo E055-71520302 OBSOLETE E055-71520305 OBSOLETE https://expert.iecokc.com/index.html#!Modules/4/Documents/thermostatvenstar.htm 2/9 2/4/22, 3:37 PM Thermostat Venstar Non-Programmable 24V with IEC Logo Non-Programmable 24V No Logo E055-71520301 OBSOLETE E055-71520304 OBSOLETE Programmable 7-Day 24V w/ IEC Logo - NEW Programmable 7-Day 24V No Logo NEW E055-71520317 E055-71520319 Non-Programmable 24V w/ IEC Logo NEW Non-Programmable 24V No Logo NEW E055-71520316 E055-71520318 Lockout Cover w/ IEC Logo Lockout Cover No Logo Relay Pack Changeover Pipe Temperature Sensor Remote Duct Air Temperature Sensor 3-Wire OBSOLETE (23 June 2011) Remote Duct Air Temperature Sensor 2-Wire IEC Remote Duct Air Temperature Sensor 2-Wire - Carrier Small Wall Plate Large Wall Plate Wall Mounted Remote Air Temperature Sensor # ACC0400 G100-71520308 G100-71520309 E025-71520303 G100-71520306 G100-71520307 G100-71520313 IEC Only G100-71308305 Carrier Only G100-71520310 G100-71520311 G100-71308307 Note: 2-Wire Remote Duct Air Temperature Sensor is not a thermistor, but a specially designed digital sensor made to work with these fan coil thermostats. Note: When mounting this thermostat inside a fan coil cabinet, it would not be possible to respond properly to room air temperature demands. Therefore, use of a remote duct mounted temperature sensor for return air will be necessary. When using this thermostat in this mode, be advised that the thermostat must be re-programmed by the installer for constant-fan operation. Please be advised that "Fan-Cycle" operation is not available with duct-mounted temperature sensing. Below: Programmable or Non-Programmable w/ Logo: Below: Programmable 7-Day or Non-Programmable No Logo: https://expert.iecokc.com/index.html#!Modules/4/Documents/thermostatvenstar.htm 3/9 2/4/22, 3:37 PM Thermostat Venstar Below: Small Wall Plate # G100-71520310: Below: Large Wall Plate # G100-71520311: https://expert.iecokc.com/index.html#!Modules/4/Documents/thermostatvenstar.htm 4/9 2/4/22, 3:37 PM Thermostat Venstar Below: Changeover Sensor # G100-71520306 Below: Remote Wall Sensor # ACC0400 - IEC # G100-71308307 https://expert.iecokc.com/index.html#!Modules/4/Documents/thermostatvenstar.htm 5/9 2/4/22, 3:37 PM Thermostat Venstar https://expert.iecokc.com/index.html#!Modules/4/Documents/thermostatvenstar.htm 6/9 2/4/22, 3:37 PM Thermostat Venstar Below: Typical 4-Pipe Fan Coil Wiring Diagram with Venstar Thermostat: (OBSOLETE) Below: Typical 2-Pipe Fan Coil Wiring Diagram with Venstar Thermostat and Pipe Temperature Changeover Sensor: (OBSOLETE) https://expert.iecokc.com/index.html#!Modules/4/Documents/thermostatvenstar.htm 7/9 2/4/22, 3:37 PM Thermostat Venstar Below: Typical 2-Pipe Fan Coil Wiring Diagram with Unit-Mounted Venstar Thermostat, Pipe Temperature Changeover Sensor, and 3-Wire Remote Return-Air Temperature Sensor (G100-71308307). Thermostat must be re-programmed by the installer for constant fan operation only. (OBSOLETE) Below: Typical 4-Pipe Fan Coil Wiring Diagram with Unit-Mounted Venstar Thermostat and 2-Wire Remote Return-Air Temperature Sensor (G100-71308305). Thermostat must be re-programmed by the installer for constant-fan operation only. (OBSOLETE) https://expert.iecokc.com/index.html#!Modules/4/Documents/thermostatvenstar.htm 8/9 2/4/22, 3:37 PM Thermostat Venstar https://expert.iecokc.com/index.html#!Modules/4/Documents/thermostatvenstar.htm 9/9Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/97.0.4692.71 Safari/537.36 Skia/PDF m97