User Manual

Functions
Control outputs
4
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1. the acquired room temperature is below the setpoint (for heating mode) or
above the setpoint (for cooling mode),
2. the control outputs have been inactive for more than the "Minimum output off
time" (factory setting 1 minute, adjustable via P213).
The valve receives the OFF command when…
1. the acquired room temperature is above the setpoint (for heating mode) or
below the setpoint (for cooling mode),
2. the valve has been active for more than the "Minimum output on time" (factory
setting 1 minute, adjustable via P212).
● For switching differential (P051, P053, P054), see Control sequences [➙ 54].
The valve receives the ON command via control output Y1 or Y2 on RDG200KN
when…
1. the acquired room temperature is below the setpoint (for heating mode) or
above the setpoint (for cooling mode),
2. the control outputs have been inactive for more than the "Minimum output off
time" (factory setting 1 minute, adjustable via P213).
The valve receives the OFF command via control output Y3 or Y4 on RDG200KN
when…
1. the acquired room temperature is above the setpoint (for heating mode) or
below the setpoint (for cooling mode),
2. the valve has been active for more than the "Minimum output on time" (factory
setting 1 minute, adjustable via P212).
● For switching differential (P051, P053, P054), see Control sequences [➙ 54].
The electric heater receives an ON command via the auxiliary heating control
output (RDG260KN: Q2, RDG200KN: Y2 or Y3, see Mounting Instructions [➙ 5] [1]
& [2]) when…
1. the acquired room temperature is below the "Setpoint for electric heater",
2. the electric heater has been switched off for at least 1 minute.
The OFF command for the electric heater is output when…
1. the acquired room temperature is above the setpoint (electric heater),
2. the electric heater has been switched on for at least 1 minute.
CAUTION! A safety limit thermostat (to prevent overtemperature) must be
provided externally.
The electric heater can be controlled via the On/Off control output (RDG260KN:
Q2, RDG200KN: Y2 or Y3) by setting P203 or P204 to 4. For adaptive temperature
compensation (P217: RDG260KN): see 2-pipe fan coil unit with electric heater
[➙ 58], 4-pipe fan coil unit with electric heater [➙ 67].
Heating: Output Y1 provides the OPEN command, and Y3 the CLOSE command
to the 3-position actuator. Cooling: Same with Y2 and Y4.
The factory setting for the actuator's running time is 150 seconds. It can be
adjusted via P214 (Y1 and Y3) or P215 (Y2 and Y4).
The parameters are only displayed if 3-position is selected via DIP switches 7 and
8.
1. When the thermostat is powered up, a closing command for the actuator
running time + 150 % is provided to ensure that the actuator fully closes and
synchronizes to the control algorithm.
2. When the thermostat calculates the positions "fully close" or "fully open", the
actuator's running time is extended + 150 % to ensure the right actuator
position is synchronized to the control algorithm.
3. After the actuator reaches the position calculated by the thermostat, a waiting
time of 30 seconds is applied to stabilize the outputs.
Note
On/Off control signal
(3-wire)
Note
Electric heater control
signal (On/Off)
Note
3-position
control signal
(RDG200KN only)
Synchronization