Siemens RDG100KN Basic Documentation page 63

Control output
Siemens
Building Technologies
In order to limit the medium mix (heating and cooling medium), the changeover
signal and the control signal (DC 0...10 V) work in sequence.
When control sequences change, the thermostat closes the pressure independent
combi valve (PICV) and releases the corresponding relay to operate the 6-port
control ball valve.
A delay of 120 seconds is needed before the pressure independent combi valve
(PICV) can be operated by the thermostat.
When the relay to ensure the 6-port control ball valve is on the right H/C position,
the control signal for the PICV valve is released.
PICV control:
When the thermostat is set with P01= 6, only the Y10 output can be used to control
the control of the pressure independent combi valve (PICV).
6-port ball valve as changeover
When the thermostat is set with P01= 6;
·
The relay Q1 is energized when "Heating sequence active" (P72= 5, fixed,
cannot be changed)
·
The relay Q2 is energized when "Cooling sequence active" (P73= 6, fixed,
cannot be changed)
Wiring diagram of the application P01=6 H/C; ceiling with PICV and 6-port ball
valve as changeover is available chapter 6.2
RDG100KN, RDG160KN, RDG165KN Basic Documentation
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CE1P3191en
2018-07-03