Introduction - Danfoss DHP-R 7Ua User Manual

1 Introduction

WM HPC is the control system that is mounted in and controls the heat. The
control system can work in either master or slave mode. One pump in each
plant, which can consist of one to eight heat pumps, must be configured as the
master. In addition to controlling slave heat pumps, a control system in master
mode can control expansion modules for a hot water charge system (WCS),
tap water control (TWC), cooling, and up to eight shunt group modules.
The WM HPC designated as the master controls the plant's primary supply
temperature. An outdoor temperature sensor, a primary supply temperature
sensor, and the system primary circulation pump are all connected to the mas-
ter control system. The master can also control auxiliary heating, which may be
electrical, district heating, or oil or another kind of burner.
WM HPC has an operator panel on the front of the heat pump where the user
can see and change settings, alarms, temperature set points, etc. WM HPC also
has a web based user interface that is unlocked by purchasing a licence. The
web interface makes it possible to monitor the plant and adjust settings over
a network, modem, or the Internet from any computer with a web browser.
With the web interface unlocked it is also possible to receive alarms from the
controller by e-mail.
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