CLIMAVENETA a-HWD2 102 Manual De Instalación, Uso Y Mantenimiento página 29

NOTE: To control multiple units (or one unit with two motors), the power supply to the different motors should be SEPARATE AND INDE-
PENDENT. To do this, it is recommended to install three relays (one for each speed) with independent contacts (one contact for each motor
being controlled) or install the INTERfACE BOARD (accessory): in this way, any faults will only affect one motor, and should not interfere
with or affect the others !!
The place where the control panel is mounted must be chosen so that the maximum and minimum room temperature limits are not exceeded (0-45°C;
< 85% RH)
The control panel cannot be installed on a metal wall, unless the latter is permanently earthed.
ACCESSORIES: MINIMUM WATER TEMPERATURE THERMOSTAT "TM"
The minimum water temperature thermostat automatically stops the fans when the coil water inlet temperature falls below 40°C in heating mode.
INSTALLATION: AIR CONNECTIONS
NOTE: All the versions are supplied as standard with free intake and outlet openings, i.e. without any form of protection.
WARNING ! the units must not be operated if the fan openings are not ducted or protected by safety mesh, in accordance with
directive 98/37/EEC and later amendments.
The units (all versions) are designed to be assembled with intake duct + outlet duct: avoid installing the unit with free air openings (no ducts) as us-
ers may be able to access hazardous parts (moving fan, electrical parts, etc.). If installing without ducts, the installer MUST fit two protective grills
(intake + outlet), secured using systems that require the use of tools to be opened (e.g. screws), so as to prevent users from accessing hazardous
parts (98/37/EEC).
• The ducts must be sized according to the system and the fan air flow characteristics. Incorrect calculation of duct sizing will cause a decline in output
or the activation of any safety devices on the system.
• To reduce noise, it is recommended to use insulated ducting.
• To avoid transmitting any vibrations from the unit into the air-conditioned environment, it is recommended to install a vibration damper joint between
the fan outlets and the ducts. The vibration damper joint is connected by screwing it onto the unit's flange from the side, using self-tapping screws.
Earth continuity between the duct and the unit must be ensured by an earth cable that bridges the vibration damper joint.
• The outlet duct should begin with a long straight section, at least twice the length of the shorter side of the duct, before encountering any curves,
branches or obstructions, such as dampers, to avoid a decline in unit performance.
• Branched sections must have a maximum incline of 7°.
COMMISSIONING
WARNING! Commissioning must be performed by qualified personnel.
BEfORE STARTING THE UNIT, CHECK THE fOLLOWING
• The unit is anchored to the ceiling or wall, floor, roof, etc.
• The earth cable is connected and all of the electrical terminals are tight.
• The ducts are connected, where envisaged. - The inspection panels are closed.
• Power supply is available.
• Make sure the water shut-off valves near the unit are open. Make sure any air has been vented from the water supply piping.
• Check that the water supply system is tight.
• Make sure all requirements and standards in force on the installation of these units have been complied with.
TO START THE UNIT THE fIRST TIME, PROCEED AS fOLLOWS
• Check that the main circuit breaker is closed.
• Power on the unit. Cooling: adjust the room thermostat to a temperature that is a few degrees below the current temperature. Heating: adjust the
room thermostat to a temperature that is a few degrees above the current temperature.
• The unit should be operated at maximum speed for a few hours when first installed and after long periods of inactivity.
WHEN THE UNIT HAS STARTED, CHECK
• Power consumption and air flow-rate
INfORMATION fOR USERS
Users should be informed about all the operations needed for correct functioning of the unit, especially regarding periodical checks, which
must be performed by specialist personnel.
EN 11