
Room Influence
Line N°
Programming line
928
Room influence
When using a room temperature sensor there are 3
different types of control to choose from
SETTING
CONTROL TYPE
- - - %
Simple control according to
outdoor conditions *
1...99 %
Control according to outdoor
conditions with room influence *
100 %
Control according to room
temperature only
* Requires the connection of an outdoor sensor
Simple control according to outdoor conditions
The flow temperature is obtained from the composite
outdoor temperature on the basis of the cooling
characteristic
This type of control requires the cooling curve to be
properly adjusted, as the control does not take the room
temperature into account for this adjustment
Control according to outdoor conditions with room
influence
The difference between the room temperature and the
setpoint value is measured and taken into account for
temperature control This enables taking into account
possible heat inputs and ensures a more even room
temperature Thus the differences with the room
temperature are taken into account and the room
temperature becomes more stable. The influence of
the difference is defined as a percentage. The better
the installation in the reference room (accurate room
temperature, correct installation location, etc ) the higher
will be the value that can be set
Example:
-Approx 60%: the reference room is appropriate
-Approx 20 %: the reference room is inappropriate
Activation of the function requires taking into account
the following requirements:
-A room sensor must imperatively be connected
-The "room influence" parameter must be set between
1 and 99
-The reference room (where the room sensor is installed)
must not contain adjusted thermostatic valves Any
thermostatic valves present in the rooms must be fully
open
Control according to room temperature only
The flow temperature is adjusted according to the room
temperature setpoint, the current room temperature
and its evolution A slight increase in room temperature,
for example, causes an immediate drop in the flow
temperature
Activation of the function requires taking into account the
following requirements:
-A room sensor must imperatively be connected
-The "room influence" parameter must be set to 100%.
-The reference room (where the room sensor is installed)
must not contain adjusted thermostatic valves Any
thermostatic valves present in the rooms must be fully
open
Room Temperature Limitation
Line N°
Programming line
932
Room temperature limitation
The "room temperature limitation" function enables
shutting off the cooling circuit pump if the room
temperature falls below the adjusted room temperature
setpoint (with summer compensation line 920) by more
than the adjusted differential
The cooling circuit pump is reinitiated as soon as the
room temperature rises again above the current room
temperature setpoint
If the room temperature limitation function is active, no
cooling demand will be transmitted to production
The function is deactivated if:
• no room temperature sensor is available
• "Room influence limit." = ---
• "Room influence" (928) = --- (simple control according
to outdoor conditions)
Maintenance document "1792 - EN"
Split system single phase type
- 72 -