Mitsubishi Electric LGH-F300RX5-E Installation Instructions Manual page 3

Standard installation examples
• Duct length
Model
LGH-F300 RX 3.3 ft (1 m) or more
5
LGH-F470, F600 RX 8.2 ft (2.5 m) or more
5
LGH- F1200 RX 9.8 ft (3 m) or more
5
• The parts can also be installed upside down.
Remove the maintenance cover, rotate the parts by
180°, and re-install.
* It can be installed by inverting the top and the bottom.
Maintenance
Inspection After installing the
space
opening
duct connecting
flange, remove the
OA
maintenance cover.
(outside
air intake) Turn the cover by 180˚,
Lossnay unit
EA and then reinstall it.
(exhaust
air outlet)
EA
(exhaust
air outlet)
Electrically operated damper
OA
(Protection against the intrusion of cold
(outside air while Lossnay is stopped in winter)
air intake)
(To be provided by the customer)
EA
(exhaust Lossnay unit
air outlet)
OA
(outside
air intake)
• 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.
Installation method
Installing the Lossnay unit
1. Preparing the anchor bolts
Mount the washers (outer diameter of >13/16 inch for 3/8-16 UNC (21
mm for M10) >15/16 inch for 7/16-14 UNC (24 mm for M12) and nuts
onto the pre-recessed anchor bolts (3/8-16 or 7/16-14 UNC (M10 or
M12)), as shown in the figure below.
Anchor bolt (3/8-16 or 7/16-14 UNC
(M10 or M12))
Nut
Washer
Nut
2. Attaching the duct connecting flanges
Use the supplied screws to secure the duct connecting flanges to the
Lossnay unit.
Models LGH-F300, F470, F600 RX
Mounting screw
(Accessory parts)
Duct connecting flange
(Accessory parts)
Distance
EA (exhaust air outlet)
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)
5
Model LGH-F1200 RX
5
Mounting screw
(Accessory
parts)
Duct connecting flange
(Accessory parts)
* Except F1200 RX
Lossnay unit
Duct
Lossnay
unit
OA
Inspection opening
(outside air intake)
(1.5 X 1.5 or 2 X 2 ft
(450 X 450 or 600 X 600 mm))
EA
Remote controller
(exhaust air outlet)
(optional parts)
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.
Models LGH-F300, F470, F600 RX
Anchor bolt
Washer
Nut
Washer
Ceiling suspension fixture
Washer
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.
• Install the anchor bolts to ensure the product's weight or
earthquake load. (Correctly rated wire/chain may also be used)
5.
Return air grille
(not Included)
Supply air grille
(not included)
Maintenance space
Inspection opening
Anchor bolt (to be provided by user)
SA RA
(supply air) (return air)
Supply air grille Return air grille
(not included) (not included)
5
Ceiling suspension fixture
Model LGH-F1200 RX
5
Anchor bolt
(3/8-16 or 7/16-14
UNC (M10 or M12))
Nut
3