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R410a DC Inverter 60Hz
Carrier service manual
98
Installation
1. Installation Introduction
1.1 Select the refrigerant piping
1.1.1 Length and level difference permitted of the refrigerant piping
Table 4-1
Item
Permitted length
Pipe
Pipe
length
Total pipe length(actual length)
≤3280ft(1000m)
L1+(L2+L3+…+L8+L9
)×2+a+b+c+…+i+j
Farthest pipe
length
Actual length
≤574ft(175m)
L
1
+L
5
+L
8
+L
9
+j
Equivalent length
≤656ft(200m)
Equivalent length L of pipe from the first
branch to the farthest one
≤131ft/295ft(40m/
90m)(*1)
L
5
+L
8
+L
9
+j
Level
difference
Level difference
between indoor
unit and outdoor
unit
Outdoor unit up
≤ 230ft(70m)
_____
Outdoor unit down
≤361ft(110m)
Level difference between indoor unit
and indoor unit
≤98ft(30m)
Fig 4-1
N1
(140)
N3
(140)
N5
(140)
N6
(71)
N7
(71)
N9
(56)
N8
(140)
N2
(140)
N4
(140)
N10
(56)
A
B
D
E
F
G
H
I
C
a
b
c
e
f
g
h
i
j
d
L
1
L
2
L
5
L
7
L
9
L
8
L
6
L
3
L
4
Outdoor unit
(one or more outdoor units)
The first branch joint
L
e
v
e
l
d
iff
e
re
n
b
e
tw
e
e
n
in
d
o
o
r
u
n
it
a
n
d
o
u
td
o
o
r
u
n
it
H
≤
7
0
m
Piping ( between the farthest indoor
unit and first branch joint) length L≤40/90
*
m
Piping ( between the farthest indoor unit
and outdoor unit) equivalent length L≤200m
In
d
o
o
r
u
n
it
to
in
td
o
o
r
u
n
it
le
v
e
l
d
if
fe
re
n
ce
h
≤
3
0
m
Indoor unit
( *
1
.L
e
v
e
l
d
iff
e
re
n
c
e
s
a
b
o
v
e
5
0
m
a
re
a
v
a
ila
b
le
o
n
re
q
u
e
s
t)