Electrical Connections - York YEFB Manuel D'utilisation Et Installation

increased noise levels);
1
• A ground cable joining all sections, in order to guarantee that there is no voltage between
the components of the air duct and the air-handling unit;
• Proper support system and thermo-acoustic insulation;
2
• It is necessary to have minimum 50 cm available open on the suction side, for a proper air
inlet.
YEFB units can have a particular accessory (air delivery plenum with spigots) that enables them to
3
be suitable for applications where the air distribution is made by circular and flexible pipes (diam.
200 mm) equipped with a proper external thermal insulation.
4
5
6
7

6.6 ELECTRICAL CONNECTIONS

8
Before making any electrical connection, verify the compatibility between power supply and the
technical features of the controller and/or of the other accessories to be connected to the unit.
9
These features are indicated in the identification plate, located on one side of the unit.
In the power supply system of the air-handling unit, a double-pole switch must be
10
foreseen with a minimum distance of 3 mm. between contacts in each pole.
For correct management and use of the air-handling unit, an YORK controller is recommended.
+
The control has to be chosen according to the requirements of the installation and use of the unit.
On sizes 020–030 in standard configuration (example CBL00), it is not possible to
connect more than one motor in parallel to the same speed selector or controller.
For this requirement, a special optional card and the relevant electric diagram are
necessary.
36