Operating and installation instructions
M-WRG-II P-T (-F, -FC), M-WRG-II E-T (-F, -FC) ventilation units
- 31 -
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
10 Ventilation levels/programs
There are different ventilation programs/levels available for selection, depending on the
type of ventilation unit (see section 7 from page 23).
10.1
“Reduced ventilation (people absent)”
The ventilation unit runs at the lowest ventilation level (10 m
3
/h). This operating mode can
be selected when the occupier is absent (e.g. on holiday) to ensure a minimum level of air
renewal. This includes ventilation for moisture protection.
10.2
“Normal ventilation (people present)”
The ventilation unit runs at the middle ventilation level (30 m
3
/h). This is the normal mode
used to achieve the ventilation needed to meet hygiene and health requirements when
the users are present.
10.3
“Increased ventilation”
The ventilation unit runs at a higher ventilation level (50 or 70 m
3
/h) in order to dissipate
load peaks, e.g. when there are multiple people present or increased odour nuisance.
10.4
“Intensive ventilation (temporary 15 min)”
The ventilation unit runs at maximum ventilation level (100 m
3
/h). After roughly 15 minutes
or when another button is pressed, the intensive ventilation is ended and the previously
set ventilation program is resumed.
10.5
“Supply air operation (summer mode)”
The ventilation unit only transports supply air; the extract air is switched off. This oper-
ating mode allows the cooler outdoor air to be routed into the building on summer nights,
for example (supply air 50 m
3
/h, extract air 0 m
3
/h).
NOTICE
Avoid using this ventilation program at cold times of year. Otherwise the ventilation unit
will constantly activate the frost protection function or switch off altogether.
10.6
“Extract air operation”
The ventilation unit only transports extract air; the supply air is switched off. This oper-
ating mode can be selected to route used air to the outside (extract air 50 m
3
/h, supply
air 0 m
3
/h).
Cross-ventilation:
If there are two ventilation units present, cross-ventilation can be
achieved on one level by setting one ventilation unit to supply air operation and the other
to exhaust air operation.
NOTICE
Avoid using cross-ventilation at cold times of year, otherwise the ventilation unit that is
set to supply air operation will constantly activate the frost protection function or switch
off altogether.
