Temperature Difference Controller KTD
giacosun® KTD differential controller permits the programming and the control of the solar thermal system. Different versions are available: the KTD4 version is included in the supply of the R586S-1 circulation group, while KTD3 and KTD5 versions are used in combination with R586S circulation group and are to be ordered separately.
The controller is simple to use due to the back-illuminated graphical display, four pushbuttons, the practical programming assistant and on line recall help texts.
The controller has inlets for temperature probe PT1000 type, a relay outlet for the control of an electronic circulator and one or two relay outlets for the drive of a pump (running/stop) or a motorized valve (opening/closing). Resident programmes in the controller allow different system configurations to be set. The control allows easy reading of the current measured values to an analysis and long term monitoring of the system by means of graphics and statistics.
Numerous other functions complete the possibilities offered by the KTD controller:
- In each moment, it is possible to reset the previous values or, if needed, those expected by default from the manufacturer;
- The blocking menu function prevents from undesired modifications of the operational parameters set during the controller programming;
- The anti-block function starts up for 5 seconds at regular intervals operating the pump, or the valve connected to the relay to prevent an eventual blocking caused by a period of prolonged inactivity;
- The anti-legionella function heats the cylinder in determined time intervals at high temperature. In KTD3 and KTD5 versions, an easy survey of the thermal energy produced by the solar thermal system is possible, by setting some additional parameters (type and glycol percentage and system capacity); KTD4 version offers the possibility of measuring the thermal energy through an appropriate combined temperature/flow sensor.
