Mitsubishi Electric Lossnay LGH-15RX3 Technical Manual page 135

CHAPTER 11 G Lossnay Q and A
Question
What is the short circulation
16 of the air intake/exhaust air
outlet?
Is total operation possible
17
with switches?
What is the difference
18 between the rotary-type and
static-type?
Is an inspection hole
19
necessary?
What must be performed
20
during maintenance?
132
The Lossnay uses the forced simultaneous supply/exhaust method so the
insufficient ventilation found in standard ventilators with no air intake is
not found.
Caution
(1) The fresh air supplied to the room should not short circulate being
drawn back into the return grille. It should flow through the entire
room.
(2) The relation of the supply and suction flows of the air conditioner must
be also considered.
Supply grille
Air
conditioner
I The air intake/exhaust grille on the outer wall is in the open and so
there is a natural wind, with the result that short circulation will not
occur easily. However, if the wind blows from the exhaust grille
towards the intake grille, short circulation may occur, so these should
be placed as far apart as possible.
The guideline for the distance is three times the duct diameter.
Duct diameter
ø100 300
ø150 450
ø200 600
ø250 750
Several units can be operated with the optional control switch.
Refer to "Chapter 3 Performance comparisons with various heat recovery
units and ventilators".
For the ceiling embedded-type, the unit is installed in the false ceiling, so
an inspection hole is required at the Core and filter removal section and
fan maintenance section.
Refer to the catalog for details.
Periodic inspection and cleaning of the Lossnay Core and air filter is
necessary. Refer to "Chapter 9 Maintenance" for details.
Answer
Exhaust
grille
Ceiling
Supply
grille
Exhaust grille
Exhaust grille
Air
conditioner
L
L
Remarks
Supply grille