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Siemens Building Technologies
Basic Documentation RVP540 / RVP550
CE1P2488en
HVAC Products
Description of the EXP settings
18.10.2002
5.52 Control mode of actuator
•
Both 2- and 3-position actuators can be controlled
•
Use of diverting and mixing valves
The setting permits the use of 2- and 3-position actuators.
Setting range
Unit
Factory setting
0...1 –
1
The settings have the following meaning:
0 2-position
actuator
The signal is used to control a diverting valve.
The diverting valve can only be fully opened or fully closed.
Intermediate positions are not possible.
In addition to this setting, the actuator’s switching differential for the 2-position
controller is to be entered on operating line 706
EXP
.
1 3-position
actuator
The signal is used to control a mixing valve.
The mixing valve can assume any position between the 2 end positions.
5.53 Switching differential of actuator
•
The switching differential of a 2-position mixing valve can be set adjusted. This
enables the controller to be optimally adjusted to the type of actuator used.
Setting range
Unit
Factory setting
0...20 K
2
Entry:
Increase:
Switching differential will become greater
The valve will open less often, but for longer periods of time.
Greater temperature variations in the heating circuit.
Decrease:
Switching differential will become smaller
The valve will open more often, but for shorter periods of time.
Smaller temperature variations in the heating circuit.
Benefit
Description
Setting
Effect
Description
Setting
Effect
