Hitachi FSG Series, Технический каталог

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UNITS INSTALLATION
12
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3. Perform sufficient insulation treatment for the attachment
portion between the connection flange and the indoor unit
main body as well as the attachment portion between the
duct and the connection flange.
Use a 3-Way Outlet Part set (Optional parts) and
completely block the air outlet of the branched duct side
of the panel. (For prevention of condensation and divert
the air to the branched duct.)
3-Way Outlet Parts Set
Model
Applied Product
Model
Remarks
PI-23LS3
RCI-2.0~5.0
To be attached to the
outlet of the panel.
See Chapter 12.10.4
for details
The following flexible duct, outlet box, and outlet panel are
available as optional parts. (Refer to the table below.)
Optional Parts for Cassette Type Air Conditioners
Name of Item Model Remarks
FD-1B Length 1m 1 piece
Flexible Duct
FD-2B Length 2m 1 piece
Outlet Box 1 piece
Outlet Panel
PDB-15W
1 piece
Attach supports to the flexible duct and fix it in position so
that it will not bend. (Minimum radius 500mm or above)
3. Air Quantity Ratio of Branched Duct side is shown as a
ratio of the unit air quantity in the table below. If 2 branch
ducts are connected to the unit, as shown by the*, the
branch duct side air quantity will become greater, and the
air velocity of the 3-way outlet side will drop.
Consequently the warm air throw distance will become
shorter.
Air Quantity Ratio of Branch Duct Side
Number of Ducts Attached
Model
One FD-2B
(Duct Side Resistance
Approx. 1.0mmAq)
Two FD-2B
(Duct Side Resistance
Approx. 1.0mmAq)
RCI-1.0~5-0 About 25% * (About 40%)
&
CAUTION:
Precautions when Planning or Installing the Ducts This
Shall also be applied to chapter 12.10.2 in case fresh
air is taken in.
1. In the case that the branch duct is installed from the
standpoint of prevention against accidents, keep the
dimensions shown in the following drawing.
2. Use non-combustible materials for the duct.
3. Install sufficient thermal insulation for the duct. (This is to
prevent condensation).
4. Follow the local code in the field, or use the dimensions
shown in the next figure, if no code are applicable.
(Space between the unit and Wall)
Material of Walls and Pillars
Material of Walls and Pillars
Space
Combustible
Materials
Non-Combustible
Materials
"C" 100cm or above 10cm or above
"D" 60cm or above 5cm or above
12.10.4 DIRECTION AIR FLOW FOR 4-WAY
CASSETTE TYPE INDOOR UNITS.
In the event that only three outlets are required, utilise the
3-way outlet parts set shown in the table below.
Model Contents of Parts
Applicable
Product
Model
PI-23LS3
Blocking Plate B·R
1 Piece (For Panel)
Blocking Plate F·L
2 Pieces (For short outlet portion)
RCI-1.0~5.0
?
NOTE:
The blocking plates must be fitted as shown on the
drawing.
Only one of the 4 outlets can be blocked as shown below.
(Attachable Position of 3-Way Outlet Parts Set)
&
CAUTION:
In case 3 outlets are used, the decrease in air quantity
will be about 3 to 5%, and within the operation range
of the unit, there will be no major difference in
particular, in comparison with the 4-way outlet.
However, the noise will increase by about 1 to 2
phones.
"D"
"C"
Main Body
Air Discharge
Air Discharge
Auto Swing Motor
Air Discharge
Air Discharge
Insulation Material (8 parts)
Wireless
Receiver Part