Hitecsa 105 Manual De Instrucciones De Uso, Mantención E Instalación página 119

EN
1.2 PLANT ENGINEERING REQUIREMENTS
Fig. 3: Positions of the three essential parts in the system, to simultaneously control a high temperature collector and a low temperature one (mixing
valve, pump and temperature probe).
1. Place the mixing valve between the high and low temperature collectors, so that the water sent to the low temp. Collector is a mixture of its own
return water and the water from the high temp. collector.
Set up a 1kΩ resistor in parallel between the G0 and Y wires. This resistor must be set up as close as possible to the Mixing valve to avoid any
2.
signal interference.
3. Set up a pump downstream to the Mixing valve.
Place a 10 kΩ temperature sensor at 25°C at the inlet of the low temp. Collector.
4.
NOTE: Maximum length of 30m.
1.3 CONNECTIONS TO THE TERMINAL BLOCK PCB
Fig. 4: Essential connections for the simultaneous control of a radiant system and a fancoil one
NOTE: The KCTR is not essential, and to start up the Unit it can be replaced by a switch that either short circuits the L-K terminals or that switches
the terminal block phase to terminal J.
Enclosed documents
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