Slave Pumps; Wcs, Twc, And Cooling; Shunt Groups; System Settings - Danfoss DHP-R 7Ua User Manual

3�7�1 slave pumps
It is not necessary to activate a slave heat pump in order for it to start to work.
They will start to work as soon as they are connected and powered. If a slave
pump loses its connection to the master it will raise an alarm. If an alarm is also
desired in the master controller, the slave pump has to be active.
To remove a slave pump without raising an alarm in the master it has to be
deactivated. The serial number seen in the menu is the serial number of the
controller unit WM HPC. You can read it on the left terminal connector on the
lower side. If a WM HPC is replaced in a heat pump the master will see it as a
completely new heat pump. The old one then has to be deactivated and the
new one activated.
3�7�2 WCs, TWC, and Cooling
There can only be one of each of these three module types installed in the sys-
tem. If there is more than one of the same kind it will not work. WCS, TWC, and
Shunt are actually the same module, HPC EM. The functionality is selected by
dip switches on the front, and if these are set wrong the module will be shown
in the wrong sub menu list.
These modules will not work until activated.
3�7�3 shunt groups
Up to eight shunt modules can be connected and active in one system. All
shunt modules are listed in the shunt menu. You not only select whether a
shunt module is to be activated or not, you must also assign it to a shunt gro-
up. In the settings menu there are settings for shunt groups one through eight.
In the expansion module menu you decide which module is in shunt group
one, two, etc.
A shunt module is an HPC EM with the dip switches set to shunt functionality.
The serial number is printed on the front of the module.
3�8 system settings
Under system settings there are settings related to the control system itself,
the WM HPC.
3�8�1 serial number
This menu shows the serial number for the WM HPC.
3�8�2 menu navigation
This setting turns menu navigation on and off. When active, a menu code is
shown for every menu when navigating the operator panel. This code tells you
where in the menu tree you currently are.
30 – Danfoss