Operation Manual

Eng-3
English
3) Air lters
After pulling out the Lossnay cores, undo lter guides, then
remove the air lters, located at the bottom left and right of the
Lossnay cores, as below.
Models LGH-F300 to F600RVX2-E: 2 cores, 4 lters
Models LGH-F940 and F1200RVX2-E: 4 cores, 8 lters
CAUTION
lBow lter stoppers a little to remove them from lter guide.
lTake lter stoppers careful not to break them.
Maintenance
Lossnay core
Handle
Handle
Lossnay
core
Main unit
Fix piece
Maintenance cover
Black screw
Hinge wire
Air lter
Main unit
Air lter
Filter stopper
Filter guide
Vacuum cleaner
Air lter
CAUTION
lNever wash the lters in very hot water and never wash them
by rubbing them.
lDo not dry the lters by exposing them to a ame.
Cleaning the parts
1) Air lters
Use a vacuum cleaner to remove light dust. To remove stubborn
dirt wash in a mild solution of detergent and lukewarm water.
(under 104˚F(40˚C))
2) Lossnay cores
Take hold of the handle and draw the Lossnay cores out from the
main unit.
Remove all dust and dirt on air lters and Lossnay cores at regular
intervals in order to prevent a deterioration in the Lossnay functions.
Guideline: Clean the air lters once a year.
(or when are indicated on the remote controller)
Clean the Lossnay cores once two year.
(Clean the Lossnay cores once a year if possible.)
(Frequency should be increased depending on the extent of dirt.)
Removing the parts
1) Maintenance cover
1. Remove the black screw.
2. Slide the x piece to out side.
3. Open hinge wire.
Models LGH-F940 and LGH-F1200RVX2-E have 2 x pieces.
nAUTOMATIC VENTILATION setting
The automatic ventilation mode automatically provides the correct
ventilation for the conditions in the room. The following shows the
effect “By-pass” ventilation will have under various conditions.
1. Reduces cooling load
If the air outside is cooler than the air inside the building during
the cooling season (such as early morning or at night), “By-pass”
ventilation will draw in the cooler outside air and reduce the cooling
load on the system.
2. Night purge
“By-pass” ventilation can be used to release hot air from inside
the building that has accumulated in buildings a business district
during the hot summer season.
3. Ofce equipment room cooling
During cold season, fresh air can be drawn in and used as is to
cool rooms where the temperature has risen due to the use of
ofce equipment.
CAUTION
lIn the case of “By-pass” ventilation, the supply air
temperature slightly rises more than the outside air
temperature because of the heat effect around the ducts or
the unit motors.
lWhen set to auto ventilation mode while using the pre-heater
function, the outdoor temperature may be detected as higher
and the mode may change to by-pass mode, even in winter.
Exhaust air
Fresh air
Lossnay core
Damper
Return air
Supply air
Exhaust air
Fresh air
Lossnay core
Damper
Return air
Supply air
Return air
Supply air
Exhaust air
Fresh air
nBY-PASS VENTILATE setting
The fresh air passes through the Lossnay cores and the return
room air is exhausted direct. Lossnay By-pass ventilate is normally
operated during the spring/autumn season.
Fresh air
Exhaust air
Lossnay core
Damper
Return air
Damper
Return air
Supply air
Supply air
Lossnay core
Exhaust air
Fresh air
Fresh air
Exhaust air
Return air
Supply air
nLOSSNAY ENERGY RECOVERY VENTILATE
setting
Both fresh air supply and return air pass through the energy
recovery cores. Energy recovery ventilation makes the fresh air
temperature close to the indoor temperature in the winter and the
summer season.
Models LGH-F300 to F600RVX2-E Models LGH-F940 and F1200RVX2-E
Models LGH-F300 to F600RVX2-E Models LGH-F940 and F1200RVX2-E
Models LGH-F300 to F600RVX2-E Models LGH-F940 and F1200RVX2-E
Operation (continued)