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Do not route supply cables through inspection panels. Do not start motors if they are
not provided with short circuit and overload and voltage drop protection according to
PN-89/E-05012.
In order to ensure safe operation of the device make sure to install a service switch outside the fan
section to cut off the power supply to the fan motor during service works. Service switch should
be placed nearby inspection panel of the fan section. In standard air handling units are fitted with
service switches and wiring from the motor to the service switch. Connection to the switch terminals
are carried out by installer.
Service panel of the fan section is additionally secured by a clamp operated with a hex wrench. Thus
there is no possibility of any accidental opening of the service panel while the device is in operation.
Disconnection of the power supply circuit with the service switch must take place with
the de-energized device. Do not install the service switch on inspection panels.
Never start and operate a motor without natural or protective grounding.
Route power cables from the fan motor through rubber bushings located in the unit
casing panel. When openings for guiding power cables in the motor terminal boxes are
blanked with a thin layer of cast iron, remove it carefully.
12. AUTOMATIC EQUIPMENT
The below plug & play automatic equipment system diagrams provide operation and protection
control, as well as comfort while maintaining low operation costs of the device. With these systems
it is only required to set the desired air parameters. All the rest is ensured by automatic adjustment
system which adjusts to both the internal, and external conditions.
Automatic equipment enables operation control of standard and optional OPTIMAX air handling
unit equipment:
»
Standard equipment for OPTIMAX air handling units:
•
air supply / exhaust fans (adjustable within 0...100%);
•
rotary heat exchanger (adjustable within 0...100%);
•
duct temperature sensor (air supply, exhaust, external and for rotary heat exchanger);
•
damper actuator for supply / exhaust (ON/OFF);
•
pressure switch for supply / exhaust filter (ON/OFF);
»
Optional equipment for OPTIMAX air handling units:
•
heating / cooling coil valve actuator (adjustable within 0...100%);
•
heating / cooling coil pump (ON/OFF);
•
freon evaporation coil (ON/OFF or 0...100%);
•
heating anti-freezing thermostat (ON/OFF).
For orders on JUWENT automatic equipment, its box is integrated into the air handling section and
wired to the installed automatic equipment. The user needs to connect the power supply (1~230V)
and wiring, and connect optional components with duct temperature sensor for air supply.
All functions of the device operation are supervised by the controller (placed inside the cabinet), and
remote control is possible via external HMI panel.
