12
1
2
1 2
1
3
2
Figure 5.5.3.2. WPZ - 30 / 39 / 40 / 54 (3000-4000)
5.6. CONNECTION OF THE AIR DUCT
• The connected air ducts must not be bent and have separate fixing.
• Make sure that the fans can not be accessed through air duct heads. Otherwise, protective grid should be installed. You may choose the grid from
the range of products provided in our website.
• Do not reduce the diameter of the piping near air inlet or exhaust ducts. If you want to reduce the airflow speed in the system, drop of pressure
and noise level, you can increase the diameter.
• In order to reduce the level of the noise in the air supply system, install dampers (see the chapter on air supply system installation).
• In order to reduce air loss in the system, the air ducts and profile components should be of class C and higher. The catalogue on the above-men-
tioned items can be found in our website.
• External air and exhaust system piping should be isolated in order to prevent heat loss and condensation.
• Maintaining the distance of up to 8 meters between air intake and air exhaust ducts is recommended. Air supplying system should be installed
away from potential air pollution sources.
• When installing air ducts next to the ventilation equipment, brackets must be used. They suppress vibration and assure secure installation of the
various system parts. The necessary brackets can be found in our catalogue or website.
• Air ducts are often mistakenly connected in inappropriate location. The ventilation units bear the labels indicating the correct air duct connection
layout. Before starting up the system, carefully check if all related works have been performed properly.
For flange diameters see chapter "DIMENSIONS AND WEIGHT".
5.7. CONNECTION OF THE UNIT TO ELECTRIC NETWORK
• Supply voltage to the unit must be connected by a qualified specialist following the manufacturer’s instructions and applicable safety guidelines.
• The unit’s power network voltage must correspond to electro technical specifications of the unit indicated in the technical decal.
• The unit’s voltage, power and other technical specifications are provided in the unit’s technical decal (on the unit casing). The unit must be con-
nected to the voltage plug socket of the grounded power network in accordance with the applicable requirements.
• The unit must be earthed according to electrical equipment installation regulation.
• Using extension wires (cables) and power network plug socket distribution devices is not allowed.
• Prior to carrying out any ventilation unit installation and connection works (before the unit is commissioned), the unit must be disconnected from
the power network.
• After installation of the ventilation unit, the power network plug socket must be accessible at any time. If the unit is equipped with circuit break-
er, disconnection from the power network is performed through the two-pole or four-pole circuit breaker (by disconnecting phase poles and
neutral).
• Before it is connected to the power network, the unit must be carefully checked for any damage (execution, control, and measurement nodes)
made during transportation.
• The power cable can be replaced only by a qualified technician, having evaluated the rated power and current.
The manufacturer does not assume any liability for personal injuries and property damage due to non-conformance with the pro-
vided instructions.
