221/348
Siemens Building Technologies
Basic Documentation RVP540 / RVP550
CE1P2488en
HVAC Products
Description of the heating engineer settings
18.10.2002
4.202 Room influence
•
More accurate room temperature control due to temperature checkback signal from
the space
•
Use of heat gains
•
Possibility of boost heating and quick setback
•
Facilitates optimum start / stop control
Defines the impact of room temperature deviations on the controlled system.
Room temperature deviation is the temperature differential between actual room tem-
perature and room temperature setpoint.
Setting range
Unit
Factory setting
0 / 1
–
1
The setting will activate or deactivate the effect of room temperature deviations on the
temperature control.
Entry:
0
Room influence inactive: The measured room temperature will not affect the
temperature control
1
Room influence active: The measured room temperature will affect the tem-
perature control
Room influence means:
Deviations of the actual room temperature from the setpoint are acquired and taken into
account by temperature control.
To use the control variant "Weather compensation with room temperature influence",
the following conditions must be satisfied:
•
An outside sensor
must be connected (either to B9, the PPS or the LPB).
•
Setting "Room temperature influence" (721)
must
be active (1)
•
The respective room unit
must
be connected to terminal A6 (PPS)
•
There may be
no thermostatic radiator valves
in the reference room
(if such valves are present, they must be set to their fully open position).
Benefit
Description
Setting
Effect
Room influence
