14
Table
3
‐
4.5:
Main
pipe
1
(L
1
)
and
first
indoor
branch
joint
(A)
Total
capacity
of
outdoor
units
Equivalent
length
of
all
liquid
pipes
<
90m
Equivalent
length
of
all
liquid
pipes
≥
90m
Gas
pipe
(mm)
Liquid
pipe
(mm)
Branch
joint
kit
Gas
pipe
(mm)
Liquid
pipe
(mm)
Branch
joint
kit
8HP
Φ
22.2
Φ
9.53
FQZHN
‐
02D
Φ
22.2
Φ
9.53
FQZHN
‐
02D
Φ
25.4
Φ
12.7
FQZHN
‐
02D
12
‐
14HP
Φ
25.4
Φ
12.7
FQZHN
‐
02D
Φ
28.6
Φ
15.9
FQZHN
‐
03D
16HP
Φ
28.6
Φ
12.7
FQZHN
‐
03D
Φ
31.8
Φ
15.9
FQZHN
‐
03D
18
‐
22HP
Φ
28.6
Φ
15.9
FQZHN
‐
03D
Φ
31.8
Φ
19.1
FQZHN
‐
03D
24HP
Φ
28.6
Φ
15.9
FQZHN
‐
03D
Φ
31.8
Φ
19.1
FQZHN
‐
03D
26
‐
34HP
Φ
31.8
Φ
19.1
FQZHN
‐
03D
Φ
38.1
Φ
22.2
FQZHN
‐
04D
36
‐
50HP
Φ
38.1
Φ
19.1
FQZHN
‐
04D
Φ
38.1
Φ
22.2
FQZHN
‐
04D
52
‐
66HP
Φ
41.3
Φ
22.2
FQZHN
‐
05D
Φ
44.5
Φ
25.4
FQZHN
‐
05D
68
‐
88HP
Φ
44.5
Φ
25.4
FQZHN
‐
05D
Φ
54.0
Φ
25.4
FQZHN
‐
06D
Notes:
1.
The
main
pipe
(L
1
)
and
first
indoor
branch
joint
(A)
should
be
sized
according
to
whichever
of
Tables
3
‐
4.4
and
3
‐
4.5
indicates
the
larger
size.
Table
3
‐
4.6:
Outdoor
connection
pipes
(g1
to
g4,
G
1
,
G
2
)
Table
3
‐
4.7:
Outdoor
branch
joint
kits
(N
to
O)
Pipes
Outdoor
unit
capacity
Gas
pipe
(mm)
Liquid
pipe
(mm)
No.
of
outdoor
units
Branch
joint
kit
g1
to
g4
8
‐
12HP
Φ
25.4
Φ
12.7
2
FQZHW
‐
02N1D
14
‐
22HP
Φ
31.8
Φ
15.9
3
FQZHW
‐
03N1D
G
1
Φ38.1
Φ
19.1
4
FQZHW
‐
04N1D
G
2
Φ41.3
Φ
22.2
Table
3
‐
4.8:
Indoor
auxiliary
pipes
(a
to
m)
Capacity
of
indoor
unit
(kW)
Pipe
length
≤
10m
Pipe
length
>
10m
1
Gas
pipe
(mm)
Liquid
pipe
(mm)
Gas
pipe
(mm)
Liquid
pipe
(mm)
≤
4.5
Φ
12.7
Φ
6.35
Φ
15.9
Φ
9.53
≥
5.6
Φ
15.9
Φ
9.53
Φ
19.1
Φ
12.7
Notes:
1.
An
indoor
auxiliary
pipe
should
not
be
larger
than
the
indoor
main
pipe
immediately
upstream
of
it.
For
indoor
auxiliary
pipes
greater
than
10m
in
length
with
indoor
units
of
capacity
great
than
or
equal
to
5.6kW,
the
gas
and
liquid
side
pipes
should
each
either
be
sized
according
to
this
table,
or
else
be
the
same
size
as
the
indoor
main
pipe
immediately
upstream,
whichever
is
smaller.
Φ
12.7
FQZHN
‐
02D
10HP
Φ
22.2
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7