Toshiba MMY-MAP0726FT2P-UL - Refrigerant (R410 A)

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23-EN 24-EN
EN
FR
■ Allowable length of refrigerant pipes and allowable height
difference between units
La
Lb
a
bc
k
l
f
g
h
L3
L5
L6 L7
L8
d
e
m
n
o
(o)
i
j
p
q
r
s
t
(m)
(n)
L9
L10
L4
(b)
(a)
Height difference
between outdoor
units: H3
Outdoor unit
A
Header unit
B
Follower unit
Outdoor unit connecting
Outdoor unit
connection
piping kit
Branching pipe
L2
L11
Branching header
Main piping
L1
H1
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Indoor unit connecting pipe
Indoor unit
The longest piping length:
L
The longest piping length from the first branch: Li
The longest piping length in Flow selector unit group : Ln
Flow
Selector
Indoor unit
Indoor unit
Flow Selector unit (Multi port type)
Indoor unit connecting pipe
Y-shaped branching joint
H4
Height difference between indoor units H2
Height
difference
between
outdoor and
indoor units:
CAUTION
Please use the appropriate pipe when the pipe size is Ø3/4 or more. (Table 3)
Outer diameter
Minimum
wall thickness
Temper
Soft Hard, Half hard
Inch mm Inch mm OK OK
Ø1/4" 6.35 0.03 0.80 OK OK
Ø3/8" 9.52 0.03 0.80 OK OK
Ø1/2" 12.7 0.04 1.00 OK OK
Ø5/8" 15.88 0.04 1.00 OK OK
Ø3/4" 19.05 0.04 1.00 NG OK
Ø7/8" 22.2 0.04 1.00 NG OK
Ø1-1/8" 28.58 0.04 1.00 NG OK
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