Toshiba MMY-MAP0806FT8P-E Installationsanleitung Seite 68

Allowable length of refrigerant pipes and allowable height
difference between units
Outdoor unit
(c)
A B
Header Follower
Height
unit unit
difference
between
outdoor units
(b)
(a)
Lb
La
LA
Outdoor unit
connection
Branching pipe
Indoor unit connecting pipe
First branching
a
L3
f
Indoor unit
Height
difference
between
outdoor and
The longest piping length from the first branch:
indoor units:
H1
L4
L5
d
Flow
Selector
unit
i
Indoor unit
L9
Indoor unit connecting pipe
p
Indoor unit
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1117701001-EN.indd 67 1117701001-EN.indd 67
C
Follower unit
LO
Lc
Branching header
L2
L8 Y-shaped branching joint
b c
k l
g h
L
The longest piping length:
Li
Ln
The longest piping length in Flow selector unit group :
L6 L7 L8
e
m n
o
(m)
(n)
j
(o)
H4
Flow Selector unit (Multi port type)
s
Y-shaped branching joint
r
q t
u
– 67 –
¿ System restriction
Outdoor unit combination
Total capacity of outdoor units
Indoor unit connection
Total capacity of indoor units
(varies depending on the height difference between
indoor units.)
(*1) : In case without central control.
It is up to 54HP in case with central control.
(*2) : MAP200* : 125%, AP381* : 130%, AP401* : 125%
¿ Cautions for installation
• Set the outdoor unit first connected to the bridging pipe to the indoor units as the header unit.
• Install the outdoor units in order of their capacity codes: A (header unit) ≥ B ≥ C
• When connecting gas pipes to indoor units, use Y-shaped branching joints to keep pipes level.
• When piping to outdoor units using Outdoor unit connection piping kits, intersect the pipes to the outdoor unit
and those to indoor units at a right angle as shown in figure 1 on "6. Installation of the outdoor unit". Do not
connect them as in figure 2 on "6. Installation of the outdoor unit".
Up to 3 units
Up to 54 HP
Up to 64 units (*1)
H2 ≤ 15m 135% of outdoor units' capacity (*2)
15m < H2 105% of outdoor units' capacity
2/26/2559 BE 11:48 AM 2/26/2559 BE 11:48 AM
134-EN