CLIVET MSAN-XMi 120T, Installation And Owner'S Manual, Page: 73 / 92

Fig.5-5
CAUTION
CAUTION
Table 5-10
1
1
1
1
1
1
$
%
'
(
&
D
E
F
H
I
G
/
/
/
/
/
(450)
5.5 Examples
Indoor unit
Outdoor unit
First manifold
Suppose in the displayed piping system, the total
equivalent piping length of
JDV side + liquid side is longer
than 90m.
1. Indoor unit branch pipe
Inner branch pipes are a~f, the size selection please refers to
Table 5-6. Note: The max. length of the branch pipe should not
longer than 15m.
2. The main pipes of indoor unit and the indoor unit branch pipe
components
The downstream inner units of the main pipe L2 are N1, N2, and
its total capacity is 80×2=160, the size of pipe L2 is
ĭ 15.9/ ĭ 9.5,
and the branch pipe B should be FQZHN-01C.
The downstream inner units of the main pipe L4 are N3, N4, and
its total capacity is 71×2=142, the size of pipe L4 is
ĭ
15.9/
ĭ
9.5,
and the branch pipe D should be FQZHN-01C.
The downstream inner units of the main pipe L5 are N5, N6, and
its total capacity is 71×2=142, the size of pipe L5 is
ĭ
15.9/
ĭ
9.5,
and the branch pipe E should be FQZHN-01C.
The indoor unit below to the main pipe L3 are N3
̚
N6, and its
total capacity is 71×4=284, the size of pipe L3 is ĭ 22.2/ ĭ 9.5,
and he branch pipe C should be FQZHN-02C.
The indoor unit below to the main pipe A are N1
̚
N6, and its
total capacity is71×4+80×2=444, and the branch pipe should be
FQZHN-02C, and because the total piping length of air
side is
• 90m, check Table.5-5, and the first branch pipe should
apply FQZHN-03C, and according to the principle of maximum
value, it should apply FQZHN-03C.
3. Main pipe (please refer to Table 5-5 and Table 5-7)
In Fig.5-5 , main pipe L1, its outdoor unit capacity is 45kW. Its
gas/liquid pipe diameter is
ĭ
25.4/
ĭ
12.7 according to Table 5-7.
Because total piping length of air side is • 90m, according
to Table 5-5, its gas/liquid side is ĭ 28.6/ ĭ 12.7. By maximum
principle, adopt
ĭ
28.6/
ĭ
12.7.
Manifold
Indoor unit
Gas side
Outdoor unit 33.5kW/40kW
Outdoor unit 45kW
Connecting method
Liquid side
Flare/welding
Flare/welding
Flare
Flare/welding
Flare/welding
Flare/welding
Flare
Flare/welding
or L1+L3+L5+f (The second connect methond)
or L3+L5+f (The second connect methond)
L1+L2+L3+L4+L5+f (The first connect methond)
L2+L3+L4+L5+f (The first connect methond)
a,b,c,d,e,f
” 250m
”
100m
” 120m
” 40m
”
15m
” 8m
”
30m
L1+L2+L3+L4+L5+a+b+c+d+e+f
”
20m
45 kW
40 kW
Allowable length and altitude difference of refrigerant pipe
Total Pipe Length(Actual)
Actual Length
Equivalent Length
Pipe Length
Maximum
Piping(L)
Pipe Length(from the first line branch
pipe to the furhtest indoor unit)(m)
Pipe Length(from the nearest branch
pipe equivalent length(m)
Drop Height
Indoor Unit-Outdoor
Unit Drop Height(H)
Outdoor Unit up
Indoor Unit Down
Indoor Unit to Indoor Unit Drop Heihgt(H)
Pimitted value Piping
Table 5-11(Liquid side pipe only)
When the total equivalent piping length of gas side is • 90m, it must increase the size of air side main pipe.
Besides, according to the distance of refrigerant pipe and the over matched state of inner unit, when the capacity is decreasing it still can
increase the gas side main pipe size.
33.5 kW
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