DA 2000
Technical User Guide 27
4.4 Cooling pump for several house sections
A joint cooling pump can be controlled by the individual climate controllers in one or more house sections.
Cooling starts when this is required by a climate controller in one of the house sections.
Procedure:
1. Mount additional supplementary relay in the climate controllers.
2. Connect the climate controllers, solenoid valves and cooling pump.
3. Setup/set the climate controllers.
Mounting of additional supplementary relay in the climate controller
1. Disconnect the power supply to the climate controller and cooling pump.
2. Place a two-pole supplementary relay or an ordinary contactor in each of the climate controllers that are to
control the common cooling pump. Place the contactor on a DIN rail.
3. The supplementary relays activate:
• The cooling pump - if just one of the climate controllers requires cooling.
• The solenoid valve of the individual house section (opens for high-pressure cooling).
Setup, setting and testing of the climate controller
See Technical Manual for the climate controller in question.
To Next Page
Loading...