Refrigerant Piping - Hitachi RCI-1.5FSN1E Installationsanleitung

NOTE:
If a false ceiling has already been installed, complete
-
all piping and wiring work inside the ceiling before
hooking-up the indoor unit.
Secure the indoor unit using the nuts, flat washers
-
and spring washers. (These nuts and washers are
supplied, 4 pieces each).
Adjusting of Space Between Indoor Units and
False Ceiling Opening
Check the level of the drain pan by a water level to avoid
-
incorrect operation of the drain discharge mechanism in
the indoor unit.
Tighten the nuts of the suspension brackets after the
-
adjustment is completed. Apply LOCK-TIGHT paint to the
bolts and nuts in order to prevent them from loosening. If
not done, abnormal noises or sounds may occur and the
indoor unit may come loose.
Adjust the indoor unit to the correct position while
-
checking with the pattern for installation.
Checking Scale for Dimension
of Opening

3. REFRIGERANT PIPING

3.1. PIPING CONNECTION
3.1.1. PIPING POSITION
Position of piping connection is the following, which is
available from all directions, top, left or right.
3.1.2. SIZE OF PIPING CONNECTION
In case of R407C
Model RCI 1.0/1.5
Gas Piping 12.7
Liquid Piping 6.35
In case of R410A
Model RCI 1.0/1.5
Gas Piping 12.7
Liquid Piping 6.35
Pattern Board for
Installation
Packing
(Corrugated Board)
(mm)
2.0 2.5/3.0/3.5 4.0/5.0/6.0
15.88 15.88 19.05
6.35 9.53 9.53
(mm)
2.0 2.5/3.0/3.5 4.0/5.0/6.0
15.88 15.88 15.88
6.35 9.53 9.53
REFRIGERANT PIPING
1. For ceiling already completed with panels.
Attach this side of the scale to the inner
side of the opening of the ceiling
Indoor Unit
Attach this side
of the scale to
Ceiling
the outer side
panel
of the unit
Checking
Scale
Check the dimension
of opening at each
side of the unit
2. Ceiling not completed with panels yet.
Pattern Paper for Installation
Dimension for Opening
Suspension Bolt
Surface of Ceiling
Special instructions for R410A
As R410A pressure is about 1.4 times higher than R407C,
improper installation may cause a serious trouble.
It is necessary to use the copper pipes, size of flare pipe
ends and flare nuts as shown below.
Flare Pipe Dimensions
Nominal
Diameters
1/4
3/8
1/2
5/8
Thickness of Copper Pipes
Nominal Outer
Diameters Diameters
1/4 6.35
3/8 9.53
1/2 12.70
5/8 15.88
Flare Nut Dimensions
Nominal
Diameters
1/4
3/8
1/2
5/8
Attach this side of the scale to the
lower side of the unit
Indoor Unit
Attach this side of
the scale to the
ceiling Panel
Checking
Scale
Check the height of the
ceiling at each corner of
the unit
Dimension for Opening
Unit
Screw (M6)
Pattern Board
for Installation
(mm)
A
Outer
+0/-0.4
Diameters
R407C R410A
6.35 9.0 9.1
9.53 13.0 13.2
12.70 16.2 16.6
15.88 19.4 19.7
(mm)
R407C R410A
0.80 0.80
0.80 0.80
0.80 0.80
1.00 1.00
(mm)
B
Outer
Diameters
R407C R410A
6.35 17 17
9.53 22 22
12.70 24 26
15.88 27/29 29
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