Description
Novar Controls Corporation’s Heat Pump Controller (HPC) and the Heat Pump
Controller Plus (HPC Plus) are dedicated, direct digital control modules that
provide precise and integrated control for heat pump applications.
The HPC is applied to single-stage (1 H/1 C) heat pumps that energize the reversing
valve internally and require a “call for heat” or a “call for cooling” like a conventional
thermostat. It features a time delay that allows a loop water pump time to respond to
a call for heating or cooling before it actually energizes the heating or cooling outputs.
The HPC Plus energizes the reversing valve and compressors directly—it does
not contain a conventional heating or cooling output. Like the HPC, it
incorporates a compressor delay to allow time for a loop water pump to turn on
before energizing the compressors. The HPC Plus also features a special general
fault input to receive contact closure signals from a variety of safety switches.
This input can be used to initiate an alarm or shut down the heat pump unit when
the signal is received from the switch.
To select the proper unit for an application, examine the inputs and outputs of
these modules carefully.
This document provides procedures for mounting the HPC or HPC Plus,
connecting the power and network communications, wiring the inputs and
outputs, setting the module address, and checking installation.
NOTE! The HPC Plus requires an EP/2, Savvy, or Lingo as the
executive module. The HPC works with any executive module.
Specifications
Agency Approvals
UL, Energy Management
Listed Device: UL/CUL File #E90949
Equipment UL-916:
Power Requirements
Voltage:
24 VAC, Class 2
Consumption:
8 VA
Operating Environment
Temperature:
HPC: 32° to 100°F (0° to 38°C)
HPC Plus: –40° to 158°F (–40° to 70°C)
Humidity:
0 to 99% Relative, noncondensing
Physical Dimensions
Height:
5.5 inches
Width:
8 inches
Depth:
1.875 inches
Weight:
1.75 lb
DOC. #569062000
2/20/01
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HPC/HPC Plus Installation Instructions