LANGUAGE
UNITS
AIRFLOW REGULATION
TEMPERATURE
FIRE ALARM
PARAMETRES
LANGUAGE
UNITS
AIRFLOW REGULATION
TEMPERATURE
FIRE ALARM
PARAMETRES
UNITS
AIRFLOW REGULATION
TEMPERATURE
FIRE ALARM
PARAMETRES
AIRFLOW REGULATION
TEMPERATURE
FIRE ALARM
PARAMETRES
PERIODIC MAINTENANCE
PERIODIC MAINTENANCE
COMMISSIONING COMPLETED
21
20
Operation and maintenance instructio
ns – CLASS UNIT TAC5
Operation and maintenance instruction
s – CLASS UNIT TAC5
Constant airflow
Flow control involves operating the air handling unit to
keep the preset airflow constant. The speed of the fans is
automatically regulated to provide correct airflow even if
the filters become clogged, diffusers are blocked, etc. The
exhaust air fan is controlled as a slave. A ratio between
exhaust and supply pressure can be configured in order
to create over, under or balanced pressure. The desired
setpoint is preset in (l/s, m³/h).
Setting
Range
Factory set-
ting
Airflow K1/K2/K3
0...max
Ratio exhaust/supply
5...999%
100%
Enable pressure alarm
No
Yes
Yes
DP Supply/Exhaust
for pressure alarm
25...999Pa
200Pa
Initialisation airflow
(l/s, m³/h)
Pressure alarm initia-
lisation
No
Yes
Yes
Demand control
The airflow desired is regulated in response to 0-10 V
input signals from an external sensor, such as a carbon
dioxide or a humidity sensor. The function can be config-
ured with a positive or a negative logic. A ratio between
exhaust and supply pressure can be configured in order
to create over, under or balanced pressure. The desired
setpoint is preset in (l/s, m³/h). The “sleep factor” is a
lower operating rate for the unit (due to e.g. low occu-
pancy) that will be activated by speed “III “
Setting
Range
Factory
setting
Vmin
0...10V
1,0V
Vmax
0...10V
10,0V
m³/h ~Vmin
(l/s, m³/h)
m³/h ~Vmax
(l/s, m³/h)
Ratio exhaust/supply
5...999%
100%
Sleep factor on K3
10...100%
100%
Enable pressure alarm
No
Yes
Yes
DP Supply/Exhaust
for pressure alarm
10...999Pa
200Pa
Initialisation airflow
(l/s, m³/h)
Pressure alarm initia-
lisation
No
Yes
Yes
Temperature
The temperature control can be configured as a supply air
control or an extract air control. By default, this function
is configured as a supply air temperature control. Changes
to this configuration are done in the advanced setup; see
Section 5.1.4
Setting
Settings
range
Factory
setting
T° heating
0...45°C
20,0°C
T° Cooling
0...99°C
24,0°C
T° Freecooling
0...99°C
15°C
Fire Alarm
An external fire detection system is used to control the air handling unit in
case of emergency. The fire alarm function is activated by means of digital
input IN3.
Setting
Settings
range
Factory
setting
Input
Normally open
Normally closed
Normally closed
Supply airflow
0...max
Extract airflow
0...max
Periodic maintenance
Built-in timer for maintenance warning; if the maintenance interval is exceed-
ed, a maintenance reminder will be displayed.
Setting
Settings
range
Factory
setting
3 monthly warning
Yes
No
No
12 monthly warning
Yes
No
No
Commissioning completed
When the commissioning has been successfull and this is confirmed in this
menu, the commissionig menu will not be activated automatically anymore.
Setting
Settings
range
Factory
setting
Confirmation of
successfull commis-
sioning
Yes
No
No
