Taco Electronic Solutions iWorx HPU2, Installation Manual

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© 2013 Taco Electronic Solutions, Inc. 1
Installation Guide
502-025
HPU2 & HPU3 Water Source Heat Pump Controller
Self-Contained Interoperable Controller Model UCP-1
SUPERSEDES: February 28, 2012
EFFECTIVE: April 17, 2013
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
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)
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
Cable Type Pairs Details Taco Catalog No.
18AWG 1 Stranded Twisted Shielded Pair, Plenum WIR-018
Cable Type Pairs Details Taco Catalog No.
Level 4 22AWG (0.65mm) 1 Unshielded, Plenum, U.L. Type CMP WIR-022