4
SYSTEM REQUIREMENTS
Allow sufficient space for airflow and service of the unit. See Fig. 2 for the required minimum distances between the unit, walls or ceilings.
PIPING REQUIREMENTS
IMPORTANT
:
Both refrigerant lines must be insulated separately.
The minimum refrigerant line length between the indoor and outdoor units is 10 ft. (3 m). The following lengths are allowed.
Table 2—Piping Lengths
SYSTEM SIZE
18K
27K
36K
48K
P
iping
M
in
. P
iping
Length
per
each
indoor
unit
ft
(m)
1
0
(
3
)
1
0
(
3
)
1
0
(
3
)
1
0
(
3
)
S
tandard
P
iping
Length
per
each
indoor
unit
ft
(m)
25
(
7.5
)
25
(
7.5
)
25
(
7.5
)
25
(
7.5
)
M
ax
.
outdoor-indoor
height
difference
(OU
higher
than
I
U)
ft
(m)
32
(1
0
)
32
(1
0
)
32
(1
0
)
32
(1
0
)
M
ax
.
outdoor-indoor
height
difference
(
I
U
higher
than
OU)
ft
(m)
4
9
(1
5
)
4
9
(1
5
)
4
9
(1
5
)
4
9
(1
5
)
M
ax
.
height
different
between
indoor
units
ft
(m)
32
(1
0
)
32
(1
0
)
32
(1
0
)
32
(1
0
)
M
ax
.
Length
per
each
indoor
unit
ft
(m)
66
(
20
)
82
(
25
)
98
(
30
)
98
(
30
)
M
ax
. P
iping
Length
with
no
additional
refrigerant
charge
per
S
ystem
(
S
tandard
P
iping
length
x
N
o
.
of
Z
ones)
ft
(m)
4
9
(1
5
)
7
4(
22.5
)
98
(
30
)
1
23
(
37.5
)
T
otal
M
aximum
P
iping
Length
per
system
F
t
.
(m)
98
(
30
)
14
7
(4
5
)
1
96
(
60
)
2
4
5
(
75
)
A
dditional
refrigerant
charge
(between
S
tandard
– M
ax
piping
length)
O
z/
ft
(g
/
m)
0.
1
6
(1
5
)
0.
1
6
(1
5
)
0.
1
6
(1
5
)
0.
1
6
(1
5
)
Gas
P
ipe
S
i
z
e
in
(mm)
3/8*2
(
9.52*2
)
3/8*2
(
9.52*3
)
1
/2 *
1
(1
2.7*
1)
+ 3/8*3
(
9.5*3
)
1
/2 *2
(1
2.7*2
)
+ 3/8*3
(
9.5*3
)
R
efrigerant
Li
q
uid
P
ipe
S
i
z
e
in
(mm)
1
/
4
*2
(
6.35*2
)
1
/
4
*3
(
6.35*3
)
1
/
4
*
4
(
6.35*
4)
1
/
4
*5
(
6.35*5
)
R
efrigerant
T
ype
R
41
0A
R
41
0A
R
41
0A
R
41
0A
C
harge
A
mount
Lbs
(kg)
4
.
1
9
(1
.9
)
6.
1
7
(
2.8
)
7.9
4
(
3.6
)
1
0.
14
(4
.6
)
NOTE
:
The refrigerant charge included is adequate for the outdoor unit’s maximum number of zones multiplied by the standard piping length per
zone.
Table 3—Indoor High Wall
Indoor High Wall 40MAQ
SIZE
9
12
18
24
P
ipe
C
onnection
S
i
z
e
-
Li
q
uid
in
.
1
/
4
"
1
/
4
"
1
/
4
"
3/8"
P
ipe
C
onnection
S
i
z
e
-
S
uction
in
.
3/8"
1
/2"
1
/2"
5/8"
Table 4—Indoor Cassette
Indoor Cassette 40MB*C
SIZE
9
12
18
P
ipe
C
onnection
S
i
z
e
-
Li
q
uid
in
.
1
/
4
"
1
/
4
"
1
/
4
"
P
ipe
C
onnection
S
i
z
e
-
S
uction
in
.
3/8"
1
/2"
1
/2"
Table 5—Indoor Ducted
Indoor Ducted 40MB*D
SIZE
9
12
18
24
P
ipe
C
onnection
S
i
z
e
-
Li
q
uid
in
.
1
/
4
"
1
/
4
"
1
/
4
"
3/8"
P
ipe
C
onnection
S
i
z
e
-
S
uction
in
.
3/8"
1
/2"
1
/2"
5/8"
Table 6—Indoor Floor Console
Indoor Floor Console 40MB*F
SIZE
9
12
P
ipe
C
onnection
S
i
z
e
-
Li
q
uid
in
.
1
/
4
"
1
/
4
"
P
ipe
C
onnection
S
i
z
e
-
S
uction
in
.
3/8"
1
/2"
Summary of Contents for 38MGQ Series
Page 7: ...7 DIMENSIONS OUTDOOR CONTINUED Suction Fig 3 Outdoor Dimensions Size 27...
Page 8: ...8 DIMENSIONS OUTDOOR CONTINUED Suction Fig 4 Outdoor Dimensions Size 36...
Page 9: ...9 DIMENSIONS OUTDOOR CONTINUED Suction Fig 5 Outdoor Dimensions Size 48...
Page 13: ...13 CONNECTION DIAGRAMS Fig 12 Connection Diagram Size 18 Fig 13 Connection Diagram Size 27...
