Room Influence - Siemens RVS41.813 User Manual

Room influence

Compensation variants
Pure weather
compensation
Weather compensation
with room influence
Pure room compensation
Siemens Switzerland Ltd
HVAC Products
TVKw
923
924
25°C
TVKw Flow temperature setpoint for cooling (with minimum limitation)
TVKw_unb Flow temperature setpoint for cooling (without minimum limitation)
TAgem Composite outside temperature
Line no. Operating line
928 Room influence
When using a room temperature sensor, there is a choice of 3 different types of
compensation.
Setting Type of compensation
− − − %
Pure weather compensation *
1...99 % Weather compensation with room
influence *
100 % Pure room compensation
* Outside sensor required.
The flow temperature is calculated with the help of the cooling curve as a function of
the composite outside temperature.
This type of compensation requires correct adjustment of the heating curve, since in
this case, the control does not take account of the room temperature .
The deviation of the actual room temperature from the setpoint is measured and taken
into account when controlling the temperature. In this way, account is taken of room
temperature deviations to facilitate more accurate room temperature control. The effect
of the deviation is set as a percentage figure. The better the reference room conditions
(correct room temperature, correct mounting location, etc.) the higher the value can be
set.
• Example:
Approx. 60 % Good reference room conditions
Approx. 20% Unfavorable reference room
To activate the function, following must be considered:
•
A room sensor must be connected
•
The "Room influence" setting must be between 1 and 99
•
There should be no controlled valves in the reference room (mounting location of
the room sensor) (If such valves are installed, they must be set to their fully open
position)
The flow temperature is controlled depending on the room temperature setpoint, the
current room temperature and the progression of the room temperature. For example, a
User manual RVS61.843, RVS41.813
6 The settings in detail
TVKw
TVKw_unb
35°C
TAgem
101/258
CE1U2355en_02
28. September 2009