Mitsubishi Electric Lossnay series Technical Manual page 82

1.1 Choosing the Duct Attachment
Choose between two directions for the outside duct (OA, EA) piping direction for alternative installation.
Standard Installation
*A space is
necessary to
prevent rain
water from
entering the
unit.
EA
1.2 Installation and Maintenance
(1) Always leave an inspection hole ( 18) to access the filter and Lossnay Core.
(2) Always insulate the two ducts outside the room (intake air and exhaust air ducts) to prevent frost from forming.
(3) Prevent rainwater from entering.
•
Apply a slope of 1/30 or more towards the wall to the intake air and exhaust air ducts outside the room.
•
Do not install the vent cap or round hood where it will come into direct contact with rainwater.
(4) Use the optional "control switch" (Ex. PZ-60DR-E, etc.) for the RX
A MELANS centralized controller can also be used.
1.3 Installation Applications
(1) Installing Two Units to One Outside Air Duct
The main unit's supply outlet and suction inlet and the
room side and outdoor side positions cannot be
changed. However, the unit can be installed upside-
down, and installed as shown below. (This is
applicable when installing two units in one classroom,
etc.)
(2) System Operation with Indoor Unit of Air Conditioner
There is an increased use of air conditioning systems
with independent multiple air-conditioner unit due to
their features such as improved controllability, energy
conservation and saving space.
For these types of air conditioning systems, combining
the operation of the dispersed air conditioners to
Lossnay is possible.
It is possible
to set the unit
close to a
wall.
OA
EA
•
CHAPTER 7 Installation Considerations
Alternative Installation
To avoid obstructing
the supply and
exhaust ducts.
OA
EA
-type.
5
EA
Reversed
Lossnay
installation
Inspection
opening
RA
SA
Cassette-type indoor unit of
air conditioner or fan coil unit
Ceiling embedded-type indoor unit
of air conditioner or fan coil unit
Lights, etc.
OA
OA EA
Standard
Lossnay
installation
RA
SA
Ceiling embedded-
type Lossnay unit
Return grille
Exhaust
Air intake
Ceiling
Ceiling embedded-
Return grille
type Lossnay unit
Exhaust
Air intake
Ceiling
U-73