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Taco iWorX HPU3 Installation Manual

Water source heat pump controller
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HPU3 Water Source Heat Pump Controller
Self-Contained Interoperable Controller Model UCP-1
SUPERSEDES: New
Plant ID: 001-4052
HPU3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Purpose of This Guide . . . . . . . . . . . . . . . . . . . . . . . . . 2
Representations and Warranties . . . . . . . . . . . . . . . . . 2
Applicable Documentation . . . . . . . . . . . . . . . . . . . . . . 3
Installation Instructions . . . . . . . . . . . . . . . . . . . . . . 4
Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Static Electricity . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
FCC Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Before Installing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
About this Document . . . . . . . . . . . . . . . . . . . . . . . . 5
Inspecting the Equipment . . . . . . . . . . . . . . . . . . . . 5
Equipment Location . . . . . . . . . . . . . . . . . . . . . . . . . 5
Selecting a Power Source . . . . . . . . . . . . . . . . . . . . 5
© 2012 Taco Electronic Solutions, Inc.
Installation Guide

Table of Contents

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Mounting the Device . . . . . . . . . . . . . . . . . . . . . . . . 6
Routing Cabling to the Device . . . . . . . . . . . . . . . . . 7
Grounding the Device . . . . . . . . . . . . . . . . . . . . . . . 8
Wiring Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Connecting Input Devices . . . . . . . . . . . . . . . . . . . 10
Connecting Output Devices . . . . . . . . . . . . . . . . . . 11
Other Connections. . . . . . . . . . . . . . . . . . . . . . . . . 11
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Mechanical. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Diagnostic LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Troubleshooting Tips . . . . . . . . . . . . . . . . . . . . . . . 15
502-035
EFFECTIVE: February 21, 2012
1

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Summary of Contents for Taco iWorX HPU3

  • Page 1: Table Of Contents

    Equipment Location ......5 Selecting a Power Source ....5 © 2012 Taco Electronic Solutions, Inc.

  • Page 2: Hpu3

    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 responsi- bility to ensure that the latest version of the Document is being used.

  • Page 3: Applicable Documentation

    Taco Electronic Solutions, Inc. will not be responsible for any product or part not installed or operated in conformity with the Document and instructions or which has been subject to accident, disaster, neglect, misuse, misapplication, inade- quate operating environment, repair, attempted repair, modification or alteration, or other abuse.

  • Page 4: Installation Instructions

    You are cautioned that any changes or modifications to this equipment not expressly approved in these instructions could void your authority to operate this equipment in the United States. 502-035, Effective: February 21, 2012 © 2012 Taco Electronic Solutions, Inc.

  • Page 5: Before Installing

    Warning: Electrical shock hazard. To prevent electrical shock or equipment damage, disconnect ALL power sources to controllers and loads before installing or servicing this equipment or modifying any wir- ing. 502-035, Effective: February 21, 2012 © 2012 Taco Electronic Solutions, Inc.

  • Page 6: Mounting The Device

    3.Using a small drill bit pre-drill the mounting holes. 4.Using two #6 pan head screws, mount the controller to the panel. 5.Wire the controller (See Routing Cabling to the Device). 502-035, Effective: February 21, 2012 © 2012 Taco Electronic Solutions, Inc.

  • Page 7: Routing Cabling To The Device

    Routing Cabling to the Device Cabling used to connect the power source and cabling used to connect the FTT-10A network must remain separated within the control enclosure and wiring conduit. 502-035, Effective: February 21, 2012 © 2012 Taco Electronic Solutions, Inc.

  • Page 8: Grounding The Device

    WARNING: Terminals 6, 9, and 12 are connected internally on all HPU3 controllers. Disconnect ALL power sources when installing or servicing this equipment to prevent electrical shock or equipment dam- age. Figure 2: HPU3 Wiring Example - Power Sourcing 502-035, Effective: February 21, 2012 © 2012 Taco Electronic Solutions, Inc.
  • Page 9 HPU3 Figure 3: HPU3 Wiring Example - Power Sinking 502-035, Effective: February 21, 2012 © 2012 Taco Electronic Solutions, Inc.

  • Page 10: Connecting Input Devices

    (T6). This must be a dry contact, normally open switch which closes when flow is detected. If a flow proof switch is not installed, the terminals should be connected with a jumper wire. 502-035, Effective: February 21, 2012 © 2012 Taco Electronic Solutions, Inc.

  • Page 11: Connecting Output Devices

    To connect the power transducer to the unit, connect the positive wire from the sensor to POW (T11) and the other wire to the adjacent common (T12). The sensor must be provided and configured by Taco. It is required if the HPU3 needs to report energy usage to a GHP1 for COP calculations.

  • Page 12: Specifications

    Power Requirements • 24VAC (20VAC to 28VAC), requires an external Class 2 supply Power Consumption • 7.2W with no external loads, maximum limited by the Class 2 supply rating 502-035, Effective: February 21, 2012 © 2012 Taco Electronic Solutions, Inc.

  • Page 13: Mechanical

    • Humidity: 0 to 90%, non-condensing Agency Listings • UL Listed for US and Canada, Energy Management Equipment PAZX and PAZX7. Agency Compliances • FCC Part 15 Class A 502-035, Effective: February 21, 2012 © 2012 Taco Electronic Solutions, Inc.

  • Page 14: Troubleshooting

    – Off when there is no network activity Service – Illuminated when the service pin is depressed or when a controller gets configured by the LCI. Figure 5: HPU3 Controller LEDs Status Network Service 502-035, Effective: February 21, 2012 © 2012 Taco Electronic Solutions, Inc.

  • Page 15: 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. Notes: 502-035, Effective: February 21, 2012 © 2012 Taco Electronic Solutions, Inc.
  • Page 16 Taco Electronic Solutions, Inc., 1160 Cranston Street, Cranston, RI 02920 Telephone: (401) 942-8000 FAX: (401) 942-2360. Taco (Canada), Ltd., 8450 Lawson Road, Unit #3, Milton, Ontario L9T 0J8. Telephone: 905/564-9422. FAX: 905/564-9436. Taco Electronic Solutions, Inc. is a subsidiary of Taco, Inc.

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