R410A di
s
trib
u
tio
n
joi
n
t
APR-CHP6
8
0BA (for o
u
tdoor
un
it)
APR-CHP1
3
50BA (for o
u
tdoor
un
it)
APR-P160BA (for i
n
door
un
it)
APR-P6
8
0BA (for i
n
door
un
it)
APR-P1
3
50BA (for i
n
door
un
it)
Expla
n
atio
n
of
s
ymbol
s
Di
s
trib
u
tio
n
joi
n
t
(APR: p
u
rcha
s
ed
s
eparately)
S
olidly welded
s
h
u
t
(pi
n
ch weld)
Bala
n
ce t
u
bi
ng
(ø1/4
")
Mai
n
di
s
trib
u
tio
n
t
u
be
s
LC – LG are
s
elected accordi
ng
to the capacity after the di
s
trib
u
tio
n
joi
n
t.
The o
u
tdoor co
nn
ectio
n
mai
n
t
u
bi
ng
( B portio
n
) i
s
determi
n
ed by the total capacity of the o
u
tdoor
un
it
s
that are co
nn
ected to the t
u
be e
n
d
s
.
S
ize
s
of i
n
door
un
it co
nn
ectio
n
t
u
bi
ng
1 – 40 are determi
n
ed by the co
nn
ectio
n
t
u
bi
ng
s
ize
s
o
n
the i
n
door
un
it
s
.
Mai
n
t
u
bi
ng
le
ng
th LM = LA + LB …
≤
262 ft
1.
2.
3
.
4.
Ball valve (field
su
pply)
T-joi
n
t (field
su
pply)
Note: Do
n
ot
us
e commercially available T-joi
n
t
s
for the liq
u
id t
u
bi
ng
a
n
d part
s
.
* Be
su
re to
us
e
s
pecial R410A di
s
trib
u
tio
n
joi
n
t
s
(APR: p
u
rcha
s
ed
s
eparately) for o
u
tdoor
un
it co
nn
ectio
ns
a
n
d t
u
bi
ng
bra
n
che
s
.
L5
LA
LE
LM
LB
LC
L2
L4
LF
LD
L
3
LG
Max. 1.
3
ft
Max. 1.
3
ft
For
exte
ns
io
n
For
exte
ns
io
n
H2
H
3
H1
L1
2
3
1
5
4
A
B
38
3
9
40
1-5. Tubing Length
Table 1-8 Ranges that Apply to Refrigerant Tubing Lengths and to Differences in Installation Heights
Select the installation location so that the length and size of refrigerant tubing are within the allowable range shown in the figure below.
Item
Mark
Content
s
Len
g
th (ft.)
L1
Max. t
u
bi
ng
le
ng
th
Act
u
al le
ng
th
492
Eq
u
ivale
n
t le
ng
th
574
∆
L (L2 – L4)
Differe
n
ce betwee
n
max. le
ng
th a
n
d mi
n
.
le
ng
th from the No.1 di
s
trib
u
tio
n
joi
n
t
1
3
1
LM
Max. le
ng
th of mai
n
t
u
bi
ng
(at max. diameter)
262
1
1
2
,
2
...
...
Max. le
ng
th of each di
s
trib
u
tio
n
t
u
be
9
8
L1+
+
+
Total max. t
u
bi
ng
le
ng
th i
n
cl
u
di
ng
le
ng
th of
each di
s
trib
u
tio
n
t
u
be (o
n
ly liq
u
id t
u
bi
ng
)
9
8
4
A +LE+LF+LG
L5
L
3
Di
s
ta
n
ce betwee
n
o
u
tdoor
un
it
s
3
2
H1
Whe
n
o
u
tdoor
un
it i
s
i
ns
talled hi
g
her tha
n
i
n
door
un
it
164
Whe
n
o
u
tdoor
un
it i
s
i
ns
talled lower tha
n
i
n
door
un
it
1
3
1
H2
Max. differe
n
ce betwee
n
i
n
door
un
it
s
49
H
3
Max. differe
n
ce betwee
n
o
u
tdoor
un
it
s
1
3
L = Le
ng
th, H = Hei
g
ht
Allowable t
u
bi
ng
le
ng
th
>
>
Allowable elevatio
n
differe
n
ce
>
>
>
>
>
>
>
>
>
>
*
3
6.6
40
3
9
Allowable le
ng
th of
joi
n
t t
u
bi
ng
T-joi
n
t t
u
bi
ng
(field-
su
pply); Max. t
u
bi
ng
le
ng
th betwee
n
the fir
s
t T-joi
n
t a
n
d
s
olidly welded-
s
h
u
t e
n
d poi
n
t
1: The outdoor connection main tubing ( B portion) is determined by the total capacity of the outdoor units that are connected to
the tube ends.
2: If the longest tubing length (L1) exceeds 295 ft. (equivalent length), increase the sizes of the main tubes (LM) by 1 rank for gas
tubes and liquid tubes. (Use a field supply reducer.) (Select the tube size from the table of main tube sizes (Table 1-9) on the
following page (LA table), and from the table of refrigerant tubing sizes (Table 1-14) on the second following page.)
3: If the longest main tube length (LM) exceeds 164 ft., increase the main tube size at the portion before 164 ft. by 1 rank for the
gas tubes. (Use a field supply reducer.)
(For the portion that exceeds 164 ft., set based on the main tube sizes (LA) listed in the table on the following page.)
4: If the size of the existing tubing is already larger than the standard tubing size, it is not necessary to further increase the size.
* If the existing tubing is used, and the amount of on-site additional refrigerant charge exceeds the value listed below, then
change the size of the tubing to reduce the amount of refrigerant.
Max. additional charge for 1 outdoor unit: 62 lbs
Max. additional charge for 2 outdoor units: 111lbs
NOTE
11
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 11