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Taco Electronic Solutions iWorx HPU2 Installation Manual

Water source heat pump controller
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HPU2 & HPU3 Water Source Heat Pump Controller
Self-Contained Interoperable Controller Model UCP-1
SUPERSEDES: February 28, 2012
Plant ID: 001-3982
SPECIFICATIONS
Electrical Inputs
Cabling: twisted shielded pair, 18 AWG recommended—500 feet max. (152 meters), 10 bit resolution
Space Temp (optional): Precon Type II or Type III 10k thermistor
Supply Air Temp (HPU3 only): Precon Type III 10K thermistor
Heat Pump Power Transducer (HPU3 only): 0 to 10 Volts DC
Equipment Status, High Pressure Alarm (HPU3 only), Low Pressure Alarm (HPU3 only): Dry Contact, Normally Open,
5 Volts DC Max
Thermostat Network: 12 Volt nominal, internally limited to 0.04 A (TS300 Series)
Electrical Outputs
Modulated Fan (HPU3 only): Analog 0-10 Vdc, 2K Ohm minimum load, 8 bit resolution
Stage 1, Stage 2, Reversing Valve, Fan, Dehumidification (HPU3 only): Triac 24 VAC, 1A @ 50C, 0.5A @ 60C, limited
by the Class 2 supply rating
Recommended Sensor Wire
Cable Type
18AWG
Recommended LON Bus FTT-10A Network Wire
Speed: 78KBPS
Max Volts: 42.4 Volts DC
Cabling: Maximum node-to-node distance: 1312 feet (400 meters); Maximum total distance: 1640 feet (500 meters)
Cable Type
Level 4 22AWG (0.65mm)
Mechanical
Dimensions: 5.55" (141mm) high, 6.54" (166 mm) wide, 1.75" deep (44 mm), ABS
Controller Weight: 0.70 pounds (0.32 kilograms)
Shipping Weight: 1.0 pounds (0.46 kilograms)
Processor: 3150 Neuron 10 MHz
Flash: 48 Kilobytes
© 2013 Taco Electronic Solutions, Inc.
Installation Guide
Pairs
1
Stranded Twisted Shielded Pair, Plenum
Pairs
1
Unshielded, Plenum, U.L. Type CMP
Details
Details
WIR-022
EFFECTIVE: April 17, 2013
Taco Catalog No.
WIR-018
Taco Catalog No.
502-025
1

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Summary of Contents for Taco Electronic Solutions iWorx HPU2

  • Page 1 Mechanical Dimensions: 5.55” (141mm) high, 6.54” (166 mm) wide, 1.75” deep (44 mm), ABS Controller Weight: 0.70 pounds (0.32 kilograms) Shipping Weight: 1.0 pounds (0.46 kilograms) Processor: 3150 Neuron 10 MHz Flash: 48 Kilobytes © 2013 Taco Electronic Solutions, Inc.

  • Page 2: Equipment Location

    Make all wiring connections in accordance with these instructions and in accordance with pertinent national and local elec- trical codes. Use only copper conductors that are suitable for 167 °F (75 °C). 502-025, Effective: April 17, 2013 © 2013 Taco Electronic Solutions, Inc.

  • Page 3: Static Electricity

    (T40). Power Requires: 24VAC (20VAC to 28VAC), requires an external Class 2 supply Consumes: 7.2W with no external loads, maximum limited by the Class 2 supply rating 502-025, Effective: April 17, 2013 © 2013 Taco Electronic Solutions, Inc.
  • Page 4 HPU Series 502-025, Effective: April 17, 2013 © 2013 Taco Electronic Solutions, Inc.
  • Page 5 HPU Series 502-025, Effective: April 17, 2013 © 2013 Taco Electronic Solutions, Inc.
  • Page 6 (Precon II or III Only). e.Accumulated Ext Occ indicates the minutes of occupancy override of the DXU. f. Press Save. 502-025, Effective: April 17, 2013 © 2013 Taco Electronic Solutions, Inc.
  • Page 7 0. NOTE: Consult Heat Pump Equipment Installation c. Select the Stage Time in minutes. Cannot be set to Instructions to determine correct selection. b.Press Save. d.Press Save. 502-025, Effective: April 17, 2013 © 2013 Taco Electronic Solutions, Inc.
  • Page 8 HPU Series 502-025, Effective: April 17, 2013 © 2013 Taco Electronic Solutions, Inc.
  • Page 9 HPU Series 502-025, Effective: April 17, 2013 © 2013 Taco Electronic Solutions, Inc.
  • Page 10 Humidity Setpoint in RH%. c. Select Shutoff Offset in degrees F. Shutoff offset sets the degrees of overcooling allowed before dehumidification is turned off. d.Press Save. 6.Press Next 3. 502-025, Effective: April 17, 2013 © 2013 Taco Electronic Solutions, Inc.
  • Page 11 Max Output Voltage (VDC) for VFD drive (commonly 10VDC). c. Press Save. d.NOTE: DO NOT change factory KP/KI settings. Please review Factory KP/KI Setting White Paper # 508-001. 502-025, Effective: April 17, 2013 © 2013 Taco Electronic Solutions, Inc.

  • Page 12: Troubleshooting Tips

    1.Make sure controllers, sensors, and power supplies are connected and communicating to desired devices. 2.Record precise hardware setup indicating the following: Version numbers of application software. Device and/or firmware version number. A complete description of difficulties encountered. 502-025, Effective: April 17, 2013 © 2013 Taco Electronic Solutions, Inc.

  • Page 13: Applicable Documentation

    REPRESENTATIONS AND WARRANTIES This Document is subject to change from time to time at the sole discretion of Taco Electronic Solutions, Inc. All updates to the Document are available at www.taco-hvac.com. When installing this product, it is the reader’s responsibility to ensure that the latest version of the Document is being used.
  • Page 14 HPU Series 502-025, Effective: April 17, 2013 © 2013 Taco Electronic Solutions, Inc.
  • Page 15 HPU Series 502-025, Effective: April 17, 2013 © 2013 Taco Electronic Solutions, Inc.
  • Page 16 Taco Electronic Solutions, Inc. is a subsidiary of Taco, Inc. Visit our web site at: http://www.taco-hvac.com Printed in the USA iWorx® and iView® are registered trademarks of Taco Electronic Solutions, Inc. © 2013 Taco Electronic Solutions, Inc. LON, LONWORKS, & LONMARK are trademarks of Echelon Corporation...

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