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UAB KOMFOVENT we reserve the right to make changes without prior notice
VERSO PRO2_guide_20-07
Before turning on the unit, make sure that:
• The unit is installed in a designated location, all ducts and wires are connected, and sections are tightly interconnected.
• There are no foreign objects, debris or tools inside the unit.
• All air filters are installed.
• Condensate drainage is connected (if necessary) and siphons are filled with water.
• All doors are closed and/or locked and all protective caps are screwed on.
•
Do not operate the unit connected to a temporary power supply as unstable power supply can
damage electronic components.
•
The air handling unit shall not be turned on without installed and connected protective earthing.
In case of any doubts, contact your installer or “Komfovent” representative to make sure that the unit is operational.
2. AIR HANDLING UNIT FUNCTIONS
Operation algorithms and functions of the air handling unit are controlled by an integrated automation system. The air
handling unit operates in a user-selected ventilation mode, using additional functions to adjust fan speed and/or power of
heaters/coolers. Automation system also continuously monitors various parameters to ensure proper operation of individual
protective guards: when these parameters go out of range, error messages are displayed or the unit is stopped.
If the unit is supplied without a factory-installed automation system, the company that installed the
automation system shall be responsible for operation of the unit and reliability of protective guards.
2.1. Ventilation modes
The unit operates in one of the available ventilation modes. Air volume for each fan and desired air temperature can be
set individually for each mode. The unit comes with the following preset ventilation modes that may be used immediately
after installation or, if required, after altering ventilation settings:
• COMFORT 1
– maximum ventilation intensity (100%), desired air temperature – 21°C.
• COMFORT 2
– average ventilation intensity (50%), desired air temperature – 21°C.
• ECONOMY 1
– low ventilation intensity (33%), desired air temperature – 20°C.
• ECONOMY 2
– minimum ventilation intensity (20%), desired air temperature – 19°C.
• SPECIAL
– maximum ventilation intensity (100%), desired air temperature – 21°C. This ventilation mode may also be used
to block heating/cooling and other functions.
For information on how to select a ventilation mode and change parameters see Chapter “Control and Settings”.
2.2. Air flow control
Fan speed of AHU is adjusted by the selected air flow control method:
• CAV
– constant air volume control. Fan speed is adjusted by measuring air flow and comparing it against the set value.
Fan rotates at a speed required to reach the set air volume, regardless of pressure changes. For example, when air filters
get contaminated, fan speed is automatically increased to ensure the same volume of air as during operation with clean
filters. In operating modes the user can set the desired air volume for each fan separately. Air volume is set and measured
in m
3
/h, m
3
/s or l/s.
• VAV
– variable air volume control mode. This method allows maintaining constant air pressure in ducts and adjusting
fan speed according to pressure changes in the ventilation system. Air pressure in ducts is measured with optional VAV
pressure sensors installed in supply and extract air ducts and connected to B6 and B7 terminals of the main controller
(see “Installation Manual”). The user sets a desired air pressure value for the supplied and extracted air flows separately
in operating modes. Air pressure is set and measured in Pa. For proper activation of this function please see the “VAV
Function Installation Instruction”.
• DCV
– direct air volume control mode. This mode is very similar to the CAV mode, but additionally allows adjustment of
fan speed by connecting 0..10 V control signal to terminals B6 and B7 of the main board (see “Installation Manual”). As
the control signal voltage changes, fan speed is adjusted accordingly, i.e. 10V corresponds to the set air volume value,
whereas, 2V corresponds to 20% of the fan power.
Содержание Verso Pro 2 Series
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