-
24
-
'11 • KX-T-166
Outdoor unit
Height difference
between indoor
units: 15 m
Height difference
50 m
Actual length
160 m
Equivalent length
185 m
Total piping length 510 m
Indoor unit
●
The protrusion of an anchor bolt on the front side must be
kept within 15 mm.
●
Securely install the unit so that it does not fall over during
earthquakes or strong winds, etc.
●
Refer to the above illustrations for information regarding
concrete foundations.
●
Install the unit in a level area. (With a gradient of 5 mm or
less.)
Improper installation can result in a compressor failure, broken
piping within the unit and abnormal noise generation.
3-1. Delivery
●
Deliver the unit in the packing to the specified installation place.
●
To hoist the unit, attach a pair of textile ropes with cushion materials attached to protect it.
Request
Put cushion materials between the unit and the ropes to avoid damages.
Attach the ropes on the unit and carry it in avoiding displacement of gravity center.
Improper slinging may cause the unit to lose balance and fall.
4. REFRIGERANT PIPING
3. Unit delivery and installation
(1) Limitation on use of pipes
Caution
●
When arranging pipes, observe the restrictions on use concerning the longest distance of (1), total piping length,
allowable pipe length from initial branching and allowable difference of height (difference between heads).
●
Avoid any trap ( ) or bump ( ) in piping as they can cause fluid stagnation.
●
Maximum length (To the furthest indoor unit) … Actual length Less than 160 m (Actual length less
than 185 m)
It is required to change the pipe diameter when the actual length exceeds 90 m.
Determine the size of main pipe, referring to the table of main pipe selection table of (3) (a).
●
Total piping length ………………………………………………………… 510 m or less
●
Length of main pipe ……………………………………………………… 130 m or less
●
Allowable pipe length from initial branching …………………………… 90 m or less
Difference in pipe lengths between indoor units, however, is 40 m or less.
●
Allowable difference in height (Difference of heads)
(a) When an indoor unit is positioned at a higher place ……………… 50 m or less
(b) When an outdoor unit is positioned at a lower place ……………… 40 m or less
(c) Difference of heights between indoor units in a system …………… 15 m or less
(d) Difference of heights between initial branching and indoor unit … 18 m or less
(2) Selection of pipe material
●
Use pipes with the inside clean and free from any harmful sulfur, oxides, dirt, chips & oil, or moisture
(contamination).
●
Use following refrigerant pipes.
Material … Phosphate deoxidation treated seamless pipe (C1220T-O, 1/2H, JIS H3300)
C1220T-1/2H for O.D. ø25.4 or more, or C1220T-O for ø22.22 or less
●
Wall thickness and size - Select according to the guide for pipe size selection
(This product uses R410A. Since, in case of pipes in the size of ø25.4 or more, materials of -O lacks
sufficient capacity to withstand pressure, make sure to use pipes of 1/2H material and thickness
larger than the minimum thickness.)
●
When a pipe is branched, make sure to use our branching set or header set.
●
When setting branching pipes, take care of the mounting direction and consult carefully with the
instruction manual.
●
Regarding the handling of operation valve, refer to 4-3 (1) Operating method of operation valve.
●
Make sure to lock the fixing legs of outdoor unit with 4 pieces of anchor bolt (M10). Best margin of protrusion for bolt above the
floor is 20 mm.
●
When installing the unit, make sure to lock its legs with the following bolts.
3-2. Cautions for installation
CAUTION
Make sure to install within the range of limitation. Otherwise, resulting
malfunction of compressor may not be warranted. Observe always the
limitation of use during installation.
4-1. Determination of piping specifications
(Please select from the following matrix according to indoor unit specifications and installation site conditions)
a) Minimum installation space
(Please select an installation point with due attention to the direction of installation of the refrigerant pipe)
(If the installation conditions shown in this drawing are not satisfied, please consult with your dealer
or the manufacturer.)
b) When units are installed side by side, leave a 10 mm or wider service space between the units.
c) Don’t install at a place where it will be surrounded with walls in four directions.
Even when it is not surrounded with walls in four directions and it is met the installation conditions
as shown by this figure, if there is risk of short-circuit, install the flex flow adaptor to prevent the
short-circuit.
d) There must be a 1-meter or larger space in the above.
e) A barrier wall placed in front of the exhaust diffuser must not be higher than the unit.
2-2. Installation space (Ex. servicing space)
Important
In case that the unit operates in cooling mode, when the outdoor temperature is –5°C or lower,
please equip a flex flow adapter and a snow guard hood (option) on the unit.
Figure in ( ) shows the value applicable when the flex flow
adaptor is installed.
*1
Under the setting condition as specified in ( ) , it is necessary to
secured 250 mm for the dimension L4 when replacing the compressor.
Establish this for example by moving the unit during the work.
*2
Suction
Blowout
195
195
690
Foundation bolt position
(4 places)
20
520
20
Lock with bolt (M10-12)
Suction
Blowout
Use a long block to extend the width.
Use a thicker
block to anchor
deeper.
Wooden base
Wear plate
Sample
Size
L1
L2
L3
L4
Ⅰ
Open
300
300
250 (5)
Ⅱ
Open
5
300
250 (5)
Ⅲ
1500 (500)
Open
300
250 (5)
Air
inlet
Air
inlet
Air
outlet
Service
space
L
3
L
2
L
4
L
1
(Unit : mm)
*1
*2
*2
*2
20
