Mitsubishi Electric Lossnay LGH-15RX3 Technical Manual page 93

CHAPTER 7 G Installation Considerations
1.1 Selecting Duct Attachment Direction
You can choose between two directions for the outside duct (OA, EA) piping direction, to improve construction.
Standard Construction
*A space is
necessary to
prevent rain
water from
entering.
Ｅ Ａ
1.2 Installation and maintenance
(1) Always leave an inspection hole (
(2) Always insulate the two ducts outside the room (intake air and exhaust air ducts) to prevent frosting.
(3) Enforce measures to prevent rain water from entering.
G
Apply a slope of 1/30 or more towards the wall to the two ducts outside the room (intake air and exhaust air ducts).
G
Do not install the vent cap or round hood where it will come into direct contact with rain water.
(4) Use the optional parts "control switch" (Ex. PZ-41SLB, etc.) for the RX
A centralised controller can also be used.
1.3 Installation applications
(1) Combined installation of two units
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 turned over, and
installed as shown below. (This is applicable when
installing two units in one classroom, etc.)
(2) System operation with air conditioner
Air conditioning systems with independent dispersed
multiple unit air-conditioners are increasing due to
merits such as improved controllability, energy
conservation and space saving.
For these types of air conditioning systems, combined
operation of the dispersed air conditioners with the
Lossnay, is possible.
90
I It is possible
to set the unit
close to a
wall.
Ｅ Ａ
Ｏ Ａ
450) on the filter and Lossnay Core removal side.
Construction with the Direction Changed
I You can avoid
obstructions of the
supply and exhaust
ducts by lights or air
conditioners.
Ｏ Ａ Ｅ Ａ
-type.
3
EA
Reversed
Lossnay
installation
RA
Cassette-type packaged air
conditioner or fan coil unit
Ceiling embedded-type package
air conditioner or fan coil unit
Light, etc.
Ｏ Ａ
OA EA
Standard
Lossnay
installation
Inspection
opening
RA
SA SA
Ceiling embedded-
type Lossnay
Return grill
Ceiling
Ceiling embedded-
Return grill
type Lossnay
Ceiling
Exhaust
Air intake
Exhaust
Air intake