Cav: Constant Airflow - 2 Settings - ViM JBRB ECOWATT PR Instruction Manual

6.10 CAV: Constant airflow – 2 settings
This operating mode is used to maintain a constant airflow despite network pressure drop changes. 2 set-
tings can be configured, called minAV and aveAV.
To switch from one setting to another, a 2V BCCA 3-position switch must be wired (see § "5.7 Electrical
connection of a 2V BCCA", page 21)
Operating logic:
• When the DI1 contact is closed, the fan controls the airflow setting configured as minAV,
• When contacts DI1 and DI3 are closed, the fan controls the airflow setting configured as aveAV.
When your switch is wired, the RMEC controller must be configured as follows:
• DI3 input configuration.
• Setting of 2 airflow set points.
Settings possible at installer level only (§ "6.3 Access levels", page 25).
6.10.1 Configuration on DI3 input as airflow setting
PRESSURE ... Pa
Default
AIRFLOW ...m3/h
screen 
SYSTEM
CONFIGURATION
4 - ON-OFF AND
DIGIT. INPUT CONFIG
6.10.2 Setting 2 airflow set points
PRESSURE ... Pa
Default
AIRFLOW ...m3/h
screen 
Min. CAV AIRFLOW
SETTING:
Min. CAV AIRFLOW
SETTING:
Min. CAV AIRFLOW
SETTING: 500*m3/h
PRESSURE ... Pa
Default
AIRFLOW ...m3/h
screen 
Ave. CAV AIRFLOW
SETTING:
Ave. CAV AIRFLOW
SETTING:
Ave. CAV AIRFLOW
SETTING:
5 x
5 x
P422 DIGIT.
INPUT CONFIG 3
INPUT CONFIG 3
: DEP. FILTER
INPUT CONFIG 3
:
AIR VOLUME SETTING
After confirmation, the value flashes
0M3/H
_ M3/H
or
2 x
After confirmation, the value flashes
0M3/H
_ M3/H
or
1,000*m3/h
29/48
Set the desired value
* Example
Set the desired value
* Example
NT00000603-JBRB-ECOWATT-PR-AN-191202