DencoHappel MATRIX OP21C Operation Manual page 63

MATRIX control panel
Room air flow
Automatic
manual
Mixing-air damper position
PR-2011-0110-GB • Subject to modifications • R9-03-2016
NOTICE!
The passive cooling function con not be activated in connection with air quality
regulation, it can only perform with a room temperature control. There is no
effect for all other types of control.
Economy mode ➜ Room air flow
Following options are within the menu "room air flow" available only when at least
one air handling unit of the group is equipped with the SWIRL-function:
Menu Display
option
1 Automatic
2 Manual
Economy mode ➜ mixing-air damper position
In the "Mixing-air damper position" submenu you can enter in percent the position
of the mixing-air damper that is valid during the economy mode (night operation).
This menu option appears if the "controlled" function has been configured on the
controller.
Operating MATRIX control panel
Explanation
The behavior of the SWIRL outlet in operation
mode "automatic" differs in the cooling case and
heating case. The HVAC mode heating has a fixed
assignment between the air flow and the setting of
the SWIRL-outlet (ramp function) to adjust and en-
sure the air throw and the direction of discharge for
a consistently temperature distribution.
In the HVAC mode cooling, the supply-air tem-
perature, the room temperature and the air flow
take an additional effect on the setting of the
SWIRL outlet The cold air throw is regulated on the
basis of a previous setting of a specified operation
point by the user (see "Submenu:Setting for room
air flow (SWIRL)" on page 69). The control princi-
ple consists of keeping the air-throw depth con-
stant and to optimize the direction of discharge
caused by changing air volume and temperature
conditions, to reduce the risk of draughts.
In "Manual" mode the user can change the direc-
tion of discharge of cold or warm air independently
of the HVAC-mode (heating or cooling). The air
passes parallel to the ceiling on the right side of the
scale and on the left side of the scale, the air is dis-
charged vertically downwards.
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