KTRRU range (Air Conditioning Technology)
KTRRU-052.245#00 for heating/cooling control of 2- and 4- pipe systems in hotels, homes and offices.
The unit can control up to 5 valve actuators (24V normally closed) per output. The controllers are configured for 2-pipe or 4-pipe operation by means of a jumper. In 2-pipe operation, the controller is operated with a common heating/cooling output whose mode of operation action can be toggled by means of an external contact (changeover contact). Connection of TPS dew point sensors is possible (max 5 of them in parallel). Condensate formation at the TPS can result in the cooling valve getting closed.
It is possible to actuate the energy saving (ECO) function via an external contact.
In the “off” switch position, the room frost protection function is activated (when the temperature drops below 5 deg C, all valves are forced open).
External flow sensor (H/C sensor): for automatic switching of the controller to heating or cooling mode depending on the inflow temperature (“sensor 2”), alternatively, this input can be used as an H/C changeover contact.
