4�3 Starting The Controller; Fine Tuning - Danfoss DHP-R 7Ua User Manual

Run pumps and valves to verify that they work and are going in the right di-
rection. It might also be a good idea to run pumps manually until all air in the
system has been vented.
When done set all actuators to auto, both in the menu and on the switches on
the cabinet front.
4�3 starting the controller
When starting to use the controller, it might be suitable to start with the ex-
pansion modules, if any are installed. You do that by setting the correct auto-
matic operation mode for the corresponding function in the menu Operation
mode.You should then proceed with checking the settings for this function
and, for example, set correct values as set points.
After that, activate the master pump using the setting Operational mode,
which is the first setting in the menu Operation mode. Also activate the main
control system (Master mode), which is the next menu item. Go through and
adjust the settings regarding heat and hot water. Among the important things
to do is to adjust the set point curve for heat so that it corresponds to the
needs of the specific building.
The last step would be to activate the slave pumps using their respective ope-
rator panels. For each slave pump, the setting Operational mode in the menu
Operation mode should also be changed to auto.
It is also possible to activate only parts of the system. You could, for example,
choose not to activate all heat pumps in the plant, or to activate only heat, only
hot water, or only cooling. You could also delay the activation of a cooling mo-
dule or shunt group that is not ready. The important thing is that the brine circuit
is working and that there is a working receiver for the produced heat, and of
course that all of the sensors and actuators in the activated parts are working.
4�4 Fine tuning
When the system is finally up and running, some work still remains. There is a
sliding grade from working to optimal performance, and the process of get-
ting closer to optimal performance involves fine tuning. The factory default
Danfoss – 35