3
i
1.
Introduction
1.1 Product description
This product from the advanced Maico WRG
300 / 400 EC model range is a heat recovery
unit with an efficiency rate of 90 % and en-
ergy-saving fans for a constant volumetric
flow. The new generation is characterised by:
●
air flow rates that can be adjusted continu-
ously through the operating panel
●
a filter status display on the unit
●
a new frost-protection system for optimum
unit performance, even at very low external
temperatures
●
low noise levels
When delivered, the unit is ready for service.
All operating elements are installed and
tested before leaving the factory. During
installation, the unit has to be connected to
the air channels, the condensation connec-
tion, the mains power and a controller.
The installer can modify the required air flow
for each setting through the operating panel
at the unit. You will find an exact description
in Chapter 4.
The WRG 300 / 400 EC is designed for a
maximum ventilation power of 300 / 400 m
3
/h
at a resistance of 150 Pa in the channel
system. The minimum volumetric flow is 70
m
3
/h.
1.2 Scope of delivery
●
Ventilation unit.
●
These mounting, operation and mainte-
nance instructions.
1.3 Symbols in this manual
WARNING symbol:
Here, extreme care and caution are
called for. In the case of malprac-
tice, there is a direct risk of injury to
the system operator or to a third
party. Non-observance can cause
damage to the ventilation system.
INFO symbol:
Text passages marked with this
symbol contain important informa-
tion and tips.
●
Symbol for lists:
Here, you will find important infor-
mation about the subject.
¾
Symbol for requests for action:
Here, you are asked to take ac-
tion. Follow the instructions
given, in the order stated.
Acknowledgements:
© MAICO Elektroapparate-Fabrik GmbH.
Translation of the original manual. We are not
responsible for mistakes or printing errors and
retain the right to make technical modifications
without giving prior notice.
