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Lgh-series Lossnay Ceiling Embedded-type (lgh-rx Series - Mitsubishi Electric Lossnay series Technical Manual

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CHAPTER 7
Installation Considerations
1. LGH-Series Lossnay Ceiling Embedded-Type
(LGH-RX
Series)
5
LGH- F300 · F470 · F600RX
Installation diagram
EA
(Exhaust air)
OA
(Outside air)
Duct downward slope 1/30
or more (to wall side)
(Rainwater entrance
prevention)
Duct diameter 8"dia
Deep hood or
(ordered by customer)
weather cover
EA (Exhaust air)
OA (Outside air)
Suspension bolt position
(ordered by customer)
LGH- F1200RX
5
Installation diagram
Duct diameter 10"dia
Ceiling
(user supplied)
Exhaust grille
suspension
(user supplied)
bolt position
39 3/4
EA
(exhaust-air outlet)
Air-supply grille
(user supplied)
OA
(fresh-air intake)
Duct
18( 24)
(user supplied)
Inspection port
Duct
(user supplied)
Heat exchanger/filter
maintenance space
Duct incline
Over 1/30
Ceiling suspension
(toward the wall)
bolt
to prevent entry
(user supplied)
of rainwater
EA
(exhaust-air outlet)
(user
supplied)
OA
(fresh-air intake)
18( 24) Inspection port
EA
(exhaust
air outlet)
OA
(outside
Electrically operated damper
air intake)
(Protection against the intrusion of cold air
while Lossnay is stopped in winter)
(To be provided by the customer)
U-72
5
Exhaust air grille
Suspension bolt position
A
Suspension bolt position
Suspension bolt
position
Lossnay Core/
air filter/
fan maintenance
Inspection
space
Supply air grille
opening
16 5/16
Supply/
Inspection opening
exhaust air grille
RA
SA
(Return air)
(Supply air)
Unit (inch)
Exhaust grille
(user supplied)
Air-supply grille
(user supplied)
Y piping,Dwindle pipe
(user supplied)
Ceiling suspension
bolt position
Air-supply grille
(user supplied)
Exhaust grille
Air-supply grille
RA
RA
SA
SA
(return air)
(return air)
(supply air)
(supply air)
Unit (inch)
EA
(exhaust
air outlet)
Lossnay unit
OA
(outside
air intake)
Always leave inspection holes (
filter and Lossnay Core removal side.
Always insulate the two ducts outside the room (intake
air and exhaust air ducts) to prevent condensation.
It is possible to change the direction of the outside air
ducts (OA and EA side).
Do not install the vent cap or round hood where it will
come into direct contact with rain water.
Air volume (CFM)
300
470
600
Always leave inspection holes (
filter and Lossnay Core removal side.
Always insulate the two ducts outside the room (intake
air and exhaust air ducts) to prevent condensation.
If necessary, order a weather cover to prevent rain water
Ceiling
suspension
bolt position
from direct contact or entering the unit.
Ducting
Indoor
Duct
Heating-insulation
diameter 8"dia
Taping
(user supplied)
material
Duct connecting flange
Should secure with airtight
tape to prevent air leakage.
In a region where there is risk of freezing in winter, it is
recommended to install an Electrically operated damper,
or the like, in order to prevent the intrusion of (cold)
outdoor air while Lossnay is stopped.
18 or
24) on the air
Dimension
Model
A
LGH-F300RX type
34 1/2
LGH-F470RX type
39 3/4
LGH-F600RX type
39 3/4
18 or
24) on the air
Outdoor
Heating-insulation
material
Duct
Should secure with airtight
tape to prevent air leakage.
Cover duct with insulation
foam prevent condensation.
B
41 7/8
40 13/16
49 3/4
Taping

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