Hitachi RCI Service Manual page 84

2 Unit installation
Use a set of three-way outlet parts (optional parts) and completely block the air outlet on the branched duct side of the panel
(to avoid condensation and direct the air towards the branched duct).
Model
PI-23LS5
The quantity of air from the branched duct side is shown in the table below as the air quantity index of the unit. If two
branched ducts are connected to the unit, the amount of air from the branched duct side will be greater and the speed of
the air on the 3-way outlet side will decrease. Therefore, the hot air projection distance will be reduced.
1 Where the branch duct is installed from this viewpoint, apply
the dimensions indicated in the figure below to avoid accidents.
2 Use ducts with non-combustible insulating materials.
3 Fit enough heat insulation to the duct to avoid condensation.
4 Follow the regulations in force regarding this matter in the place
of installation or use the dimensions indicated in the figure
below if there are no applicable regulations.
Measurement
A
B
¿
Outlet air flow interlock (PI-23LS5)
If only three outlets are necessary, use the 3-way outlet part set indicated in the table below.
Accessory
PI-23LS5
Install the interlock plates as indicated in the figure.
Only one of the 4 outlets can be blocked.
N O T E
If three outlet ways are used, the quantity of air will decrease
by between 3% and 5% and there will be no significant
differences within the unit working range in comparison with
the four-way outlet. However, the operating noise level will
increase from 1 to 2 dB.
72
SMGB0063 rev. 1 - 10/2010
Units
RCI-(2.0-6.0)FSN2E
Combustible materials
≥ 100 mm
≥ 100 mm
Appearance
Remarks
To connect to the panel outlet. See
connection position (OACI-232 or
68
Wall and pillar material
Non-combustible materials
≥ 50 mm
≥ 60 mm
Quantity
1 RCI-(1.5-6.0)FSN2E
Outdoor air inlet duct
PD-75), see on page
Purpose