O P E R AT I N G A N D I N STA L L AT I O N I N ST R U CT I O N S SYST E M V E N T E C H LG 5 0 0 P
PAG E 1 7
The compact ventilation unit LG 500 P
System VENTECH is used for the cont-
rolled mechanical ventilation of
houses, larger residential units, offices,
surgeries and similar applications.
The range of use extends fundamen-
tally to residential areas of 150 m² up
to approx. 400 m², with anadjustable air
volume flow up to 550 m³/h.
The compact ventilation unit LG 500 P
System VENTECH consists of a compact,
heat bridge-free and heat-insulated
housing made from zinc-plated steel
plate, powder-coated exterior in RAL
9010, a highly efficient heat recovery
system with air/air counterflow heat
exchanger made from recyclable plastic
with an efficiency level of approximately
92 %, an automatic 100 % bypass with
energy-saving radial fans in direct-cur-
rent technology and EC technology with
optional constant pressure/flow volume
regulation, air filters in quality category
F7 in the supply air and G4 in the extract
air with integrated, wired, control elect-
ronics and an optional “PI-HMI“ remote
control panel, for free-standing or wall
mounting in frost-free rooms.
• Ventilation unit with highly efficient
energy recovery
• Supply air and extract air fans with
energy-saving EC motors
• 3-stage fan operation without constant
volume flow function
• Optional with constant pressure control
or electronic volume flow control for
constant air volume flow, adjustable up
to 550 m³/h. Even with changes in the
system pressure is the programmed
air volume flow maintained, for examp-
le, if the filter is dirty.
• Needs-based air volume control via CO
2
sensor
• User-friendly control unit
• Integrated 100 % bypass for bypassing
the heat exchanger in summer mode
• Selectable, automatically operating
frost protection switch for the heat ex-
changer, optionally available with a PTC
low temperature preheater battery
• Filter monitoring integrated, upon at-
tainment of the time interval message
‘Filteralarm’ appears on the display.
• Simple filter change without tools
• Optional reheater battery for additional
raising of the room temperature
4.6 VENTILATION UNIT
4.6.1 Description
4.6.2 Advantages and features
