Heat Pump Controller
Heat Pump Controller8733819577 (2019/02) Subject to change without prior notice
6 | Introduction
Mounting Hole Dimensions
Four (4) mounting holes in rectangular pattern with
dimensions between them as follows:
• 6.81" (width) by 4.65" (height).
• 173mm (width) by 118mm (height).
Loop Pump Control (former Pump Valve
Relay Kit)
A loop pump control relay has been integrated into
the HPC board. The loop pump control can be used
to energize a field-installed pump or solenoid valve
when there is a call for compressor operation. This
loop pump control relay is used to switch 208/240
VAC signals ON/OFF (depending on the supply
voltages).
WARNING:
Chassis Ground
Ensure metal standoff is properly secured to the
chassis of the unit through a fastener. The HPC
will obtain a chassis ground by way of a metal
standoff connected to both the (C-GND) and (C)
terminals of the Printed Circuit Board (PCB).
Improper grounding could result in potential
electrical shock and/or Equipment malfunction.
Electrical shock could cause personal injury or
death.
NOTICE: The loop pump control relay output is
208/240 VAC at 5 A; ensure the pump or valve
being connected is rated to this specification.
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