Standard Installation Examples; Installation Method - Mitsubishi Electric Lossnay LGH-F300RX3-E Installation Instructions Manual

Standard installation examples

• Duct length
Model
LGH-F300RX -E
3
LGH-F470RX -E
3
LGH-F600RX -E
3
LGH-F1200RX -E
3
• The Lossnay unit can also be installed upside
down.
Remove the maintenance cover, rotate the
Maintenance cover by 180°, and re-install.

Installation method

Installing the Lossnay unit
1. Preparing the anchor bolts
Mount the washers (outer diameter of >7/8 inch for 3/8-16 UNC, >1
inch for 7/16-14 UNC) and nuts onto the pre-recessed anchor bolts
(3/8-16 or 7/16-14 UNC), as shown in the figure below.
Anchor bolt (3/8-16 or 7/16-14 UNC)
Nut
Washer
Nut
2. Attaching the duct connecting flanges
Use the screws supplied to secure the duct connecting flanges to
the Lossnay unit.
For the model LGH-F1200RX
as well to secure the flanges.
Models LGH-F300, F470, F600RX
Mounting
screw
Duct connecting flange
Duct connecting flange
Distance
40 inch or more
100 inch or more
EA (exhaust air outlet)
100 inch or more
120 inch or more
OA (outside air intake)
Downward gradient of duct:
1/30 or more (toward wall side)
and provision of distance in table
below (to prevent rain water from
seeping in)
Deep hood
(to prevent rain water
from seeping in)
-E, use screws and washers provided
3
-E
3
Model LGH-F1200RX -E
3
Duct connecting box
Mounting screw
Washer
Lossnay unit
Duct
Lossnay unit
OA
Inspection opening
(outside air intake)
(17 11/16"x17 11/16" or
23 5/8"x23 5/8" inch)
EA
(exhaust air outlet)
CAUTION
• Before attaching the duct connecting flanges, check that no
foreign matter (scraps of paper, vinyl, etc.) has found its way
inside to Lossnay unit.
• Attach the duct connecting flanges with the packing at the SA
and RA sides.
3 . Mounting Lossnay unit
(1) Hang the ceiling suspension fixtures on the anchor bolts and
adjust in such a way that Lossnay unit is level.
(2) Tighten up securely using double nuts.
Lossnay unit
Anchor bolt
Nut Washer
For the model LGH-F1200RX
Remove the packing box mounting plate if it should interfere with the
installation work. Make sure that the screws which were removed are
screwed back in their original positions in order to prevent air leaks.
Ceiling suspension fixture
Packing box mounting plate
CAUTION
• When suspending Lossnay unit from the ceiling, do not handle
it in such a way that force will be applied to the control box.
Return air grille
Supply air grille
Maintenance space
Inspection opening
Anchor bolt (to be provided by user)
SA RA
(supply air) (return air)
Supply air grille
Ceiling suspension fixture
-E
3
Anchor bolt
(3/8-16 or 7/16-14 UNC)
Nut
Washer
Washer
Return air grille
3