Status Input
Terminals 6, 7, and 8 (labeled “Status Input”) are for digital input connections.
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Terminals 6 and 7 are for the fan status.
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On the HPC, Terminals 7 and 8 are for filter status.
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On the HPC Plus, Terminals 7 and 8 are for the Compressor Stage 1 status.
These are dry contact closure, digital inputs and are connected as normally open
with the fan status as closing when the fan is on and the compressor status as
closing when the compressor is on.
Override Switch
A normally open momentary contact switch can be connected to Terminals 9 and
10 (Labeled “Override Switch”) to be used as a timed override. The override
switch can have a status LED. The software defines the length of time that the
override remains in effect.
The Futura Temperature Sensor provides an override switch and status LED.
Refer to the installation instructions shipped with the sensor for information
about proper connections.
General Fault Input (HPC Plus Only)
Terminals 13 and 14 under “Analog Outputs” are used to connect to a dry contact
closure input from a safety switch. The signal from the safety switch can be used
to initiate an alarm or shut down the heat pump (based on how the input is
defined in the software).
Use the following procedure to make the connections.
Step Procedure
1 Connect one wire from the safety switch to Terminal 13 (F).
2 Connect the other wire from the safety switch to Terminal 14
(GND).
DOC. #569062000 2/20/01 5
HPC/HPC Plus Installation Instructions
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