Komfovent C6.1 Manuel D'installation Et D'utilisation page 32

EN
This function requires additional VAV sensors, which must be ordered sepa-
rately. The connection of the sensor is shown in Fig. 1.3b.
If you select the VAV flow regime, the automatic air quality support will be
disabled. The AUTO button will activate the weekly operation schedule.
• DCV – Directly Controlled Volume). The air handling unit will operate similarly as in the CAV mode, but air
volumes will be maintained directly in accordance with the values of the B6 and B7 analog input signals
of controller. After giving the signal 0... 10 V to the appropriate input, it will be converted according to the
current determined air volume. For example, if the maximum air flow of the unit is 500 m
panel – 250 m /h, and the B6 input value – 7 V, the unit will supply constant air volume of 175 m
3
70 % of the set value. The same applies to the exhaust air only by B7 input.
With special modes (KITCHEN, FIREPLACE, OVERRIDE and HOLIDAYS)
the unit will always operate only in the CAV mode, regardless of the selected
flow control.
Air quality control. Air quality control is activated by default. In order for the
unit to operate in the AUTO mode not according to the air quality, but according
to the weekly schedule, this function can be deactivated.
Air quality control is provided with the several sensors. Their types are con-
figured as follows:
CO2 – Carbon dioxide concentration sensor [0...2000 ppm];
VOC – Air quality sensor [0... 100%];
RH – relative humidity sensor [0... 100%].
The air quality control will automatically regulate ventilation intensity in the
range of 20...70%. If necessary, the range may be adjusted.
If the minimum ventilation intensity is set to 0%, the air handling unit will be
allowed to turn off when the air quality in the room meets the required value.
However, the unit will turn on for a short time periodically every 2 hours (this is
configurable), to check the air quality in a room. If after checking, the air pollu-
tion does not exceed the set value, the air handling unit is switched off. How-
ever, if after checking the air quality is poor, the air handling unit will continue its
operation until the room is ventilated.
Control sequence. In the "Control sequence" advanced settings you can set
up to 3 levels of control, which will control the supply air temperature, i.e. first
starts Stage 1, if it is not enough then Stage 2, and then Stage 3. Only the de-
fault Stage 1 control is activated in the factory for an electric heater – but you
can activate additional heaters/coolers, to coordinate their operating sequences
with each other or to completely turn them off.
To activate the additional hot water duct heater, you will need to select the
"external coil" and set its type to "hot water". Selecting the "cold water" type
of external coil will activate the water cooling control. The external coil control
signal is output through the TG1 terminals (Fig. 1.3 b).
After activating the water heater, you must additionally con-
nect the water temperature sensor B5 to the controller ter-
minals.
Selecting "External DX unit" as a controllable feature will activate the control
of external outdoor DX unit. The control signal is output through the controller
terminals DX (Fig. 1.3 b).
32
UAB AMALVA we reserve the right to make changes without prior notice
/h, setpoint in the
3
/h, i. e.,
3
Air quality control
Status
On
Sensor 1
CO2
Sensor 2
RH
Min. intensivity
20%
Max. intensivity
70%
Check period
2h
Control sequence
1 Stage
Electric heater
2 Stage
External coil
3 Stage
External DX unit
External coil type
Hot water
C6-17-01