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Note 2) Required condition
A̷ɇϑϑ̈ѣʀɇϩ̈ͱ͝
Condition
Example
First branch
̟ͱ̈͝ϩड़ɇθϩ˵ʪϑϩ
Indoor unit
ߦߧ͔ख़ɵॐ˵ॐ̧ࡥ̷ॐ͔ॐαࡥ̷ॐθख़߫ߢ͔ࡤƊ̈іʪͱ˙ϩ˵ʪ
branch liquid and low pressure gas pipes
(b, l, m) must be increased by 1 grade.
Total length of
extended pipe
If the size of pipe (main pipe), between
ϩ˵ʪѣθϑϩɵθɇ͝ʀ˵̟ͱ̈͝ϩɇ͝ʒϩ˵ʪͱЇϩʒͱͱθЇ̈͝ϩࡥ
is not increased by 1 grade, a+(b+l+m)
уߤॐʀॐʒॐʪॐ˙ॐ˝ॐ˵ॐ̈ॐ̟ॐ̧ॐ͝ॐͱॐΧॐαॐθख़ߣߢߢߢ͔
If the size of pipe (main pipe), between
ϩ˵ʪѣθϑϩɵθɇ͝ʀ˵̟ͱ̈͝ϩɇ͝ʒϩ˵ʪͱЇϩʒͱͱθ
unit, is increased by 1 grade, (a+b+l+m)
уߤॐʀॐʒॐʪॐ˙ॐ˝ॐ˵ॐ̈ॐ̟ॐ̧ॐ͝ॐͱॐΧॐαॐθख़ߣߢߢߢ͔
đAƸड़kɇʀ˵
indoor unit
ʀॐʒࡥʀॐʪࡥʀॐ˙ࡥ˝ࡥ˵ॐ̈ࡥ˵ॐ̟ࡥ˵ॐ̧ࡥ͝ࡥͱࡥΧࡥαࡥθख़ߦߧ͔
Difference between the distance of the outdoor unit to the
˙ɇθϩ˵ʪϑϩ̈͝ʒͱͱθЇ̈͝ϩɇ͝ʒ͝ʪɇθʪϑϩ̈͝ʒͱͱθЇ̈͝ϩख़ߦߧ࣑ɇॐɵॐ˵ॐ̧࣒ࣛ
࣑ɇॐɵॐʀॐʒ࣒ख़ߦߧ
Note 3) For indoor units to which no MCU is connected, be sure to set their options to “Cooling only indoor unit,”
and then connect them to a low pressure gas pipe and a liquid pipe. Be sure to combine the cooling
only indoor units so that their total capacity becomes 50% or less of the total capacity of all indoor
units.
Note 4) In case of connecting more than one indoor unit in one MCU Port, the below indoor units
ʀɇ͝͝ͱϩɵʪʀͱ͔ɵ̈͝ʪʒkŵǤΧ̷Їϑ࣑đ७७७ĘçUk७७࣒ࡥĮťʒЇʀϩ࣑đ७७७âĘkťk७७࣒ࡥ²цʒθͱƸ̈͝ϩ
²k࣑đ७७७Ę9U७७࣒ࡥ²цʒθͱƸ̈͝ϩ²Ɵ࣑đ७७७Ę9७७࣒ࡥ²Ƹ̧̈ϩ࣑đǹUࣛç७७७ĘࡥđAđࣛU७७७Ę࣒
Note 5) In case of connecting two MCU ports with Y-joint, the indoor units cannot be combined to more than one.
