Operating and installation instructions
M-WRG-II P-T (-F, -FC), M-WRG-II E-T (-F, -FC) ventilation units
- 21 -
Meltem Wärmerückgewinnung GmbH & Co. KG
Am Hartholz 4 · D-82239 Alling
[email protected] · www.meltem.com
VENTILATION THE RIGHT WAY
V E N T I L A T I O N & H E A T R E C O V E R Y
6
Rules for correct usage
6.1
General
► Always operate the ventilation unit with the unit cover attached.
► Run the ventilation unit in continuous mode or demand-controlled with humidity and/
or CO
2
control (only possible if the unit contains the appropriate sensors). While
continuous mode constantly ensures a good and healthy atmosphere in the room,
demand-controlled ventilation uses sensors to provide particularly energy-efficient
ventilation that is tailored precisely to requirements.
► Adapt the air flow through the ventilation unit to take account of the air load created by
cooking, washing, ironing, visitors, showers, sauna, etc.
► Set the ventilation unit so that the relative humidity ranges between 40 % and 65 %.
People feel most comfortable within this range.
6.2
Seasonal operation
6.2.1 Operation at cold times of year
► During cold times of year, run the ventilation unit either in continuous mode or
demand-controlled via the humidity or CO
2
sensors (only if the unit has the appro-
priate sensors).
— Energy-saving motors and an innovative controller ensure a very low power
consumption, even in continuous mode.
— Continuous removal of moisture from the interior is only guaranteed while the unit
is in operation.
► Run the intensive ventilation program in the following cases:
— regularly if there is high atmospheric humidity in the interior
— if you need to switch off the ventilation unit.
This will remove any condensate that is present in the ventilation unit.
► Maintain the temperature in bedrooms at 16 °C to 18 °C or more. This temperature
is also more healthy for the people in the bedrooms. Do not run the ventilation unit
at room temperatures below 15 °C, and particularly not at low external temperatures
below 0 °C. Otherwise the ventilation unit will constantly activate the frost protection
function or switch off altogether. The higher the interior temperature, the bigger the
buffer for operating the ventilation unit and for heat recovery.
NOTICE
Supply air or exhaust air operation alone is not recommended. Firstly because the unit
is often in the unbalanced frost protection mode and secondly because the incoming
flow of cold outdoor air causes the rooms to cool down.