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VTS reserves the right to implement changes without prior notice
Ventus Air Handling Units
If the unit operate with the low inlet temperature of the air it is recommended to use the mixture of
the glycol (up to 45%) as the heating medium. All installation pipes of the water heating, condensate
drying, hydraulic valves should be well isolated. The best is use the pre-heater before the heat
recovery section.
The air damper actuators should be protected from the atmospheric conditions. If the outdoor
temperature is lower than -20°C, the air dampers actuators must be equipped with heating. All
equipment and components operating outside the unit must have the required IP.
Units, periodically stopped during periods of low outdoor temperatures, require special attention.
They should be equipped with an automation system, that supports the flow of the liquid through
water heaters to prevent it from freezing during AHU downtime. If it is possible that temperature in
the fan section fall below -30°C or lower, the sections should be equipped with an internal heating
system to ensure reliable start of the motors after shutdown and downtime.
4.4 Conditions of AHU assembly carried out by Authorized VTS Service
In case of AHU delivered in packages VTS provides a charge-free assembly and installation within
200km from the location of the nearest authorized service in a country in which VTS has its
representatives. A list of Authorized VTS Services is available a www.vtsgroup.com.
In case when the installation is to be carried out in a place located over 200 km from the business
residence of the nearest VTS service, the customer is obligated to cover:
- Transport expenses of the Authorized VTS service arising from the excessive distance
- Accommodation and food for the Authorized VTS service crew.
AHU assembly can be realized only by service which has an appropriate VTS Authorization
Certificate allowing it to provide such a service.
As per the presented offer to range of service does not include: AHU section connection, connection
of the power supply, automation controls (wiring of the unit, control panel, frequency converters for
the unit motors, sensors, and valves) to the unit as well as it doesn’t include the connection of units
to the ventilation ducts.
Preparation for assembling
Before starting AHU assembly VTS shall send to customer a document entitled ‚Confirmation of
Readiness for Assembly’ (enclosure no 1).
The document contains important information about the installation process. Having satisfied
conditions specified in it the document should be signed in the indicated place and sent to the
specified VTS office.
ATTENTION:
Sending the ‚Confirmation of Readiness for Assembly’ is indispensable to start the
assembly process by Authorized Service. If real conditions do not correspond to the information
given in confirmation VTS shall be entitled to demand reimbursement of the costs incurred due
to service stoppages or additional actions performed by the service on site.
Assembly site
Appropriately prepared place of assembly should meet the following conditions:
The right surface – the surface should be hard, dry, protected from atmospheric influence, and
damage resistant (placement of the unit, installation works).
