9
Fig. 15 — DX Coil Piping Connection Diagram
Table 3 — DX Coil Piping Connection
42DH
UNIT
SIZE
COIL ROWS
A
B
C
D
E
F
G
H
Water
Pre-Heat
DX Only
06/08
—
4
4
3
/
4
5
1
/
2
—
—
12
1
/
2
2
3
/
4
—
—
6
1
4
6
18
3
3
/
4
2
5
/
8
2
5
/
8
6
2
4
4
7
/
8
3
1
/
4
3
1
/
4
6
10/12
—
4
6
1
/
2
7
1
/
8
—
—
12
1
/
2
2
3
/
4
3
3
/
4
—
6
1
4
5
1
/
8
17
1
/
8
3
3
/
4
2
5
/
8
2
5
/
8
6
2
4
4
7
/
8
3
1
/
4
3
1
/
4
6
16
—
4
6
1
/
2
7
1
/
8
—
—
12
1
/
2
2
3
/
4
—
—
6
1
4
5
1
/
8
17
1
/
8
3
3
/
4
2
5
/
8
2
5
/
8
6
2
4
6
3
/
8
10
13
5
/
8
6
6
/
4
4
1
/
8
2
5
/
8
6
20/22
—
4
6
1
/
2
7
1
/
8
—
—
12
1
/
2
2
3
/
4
—
—
6
1
4
5
1
/
4
19
3
/
4
3
3
/
4
2
5
/
8
2
5
/
8
6
2
4
6
3
/
4
7
1
/
4
11
5
/
8
15
7
/
8
6
3
/
4
4
1
/
4
2
5
/
8
6
30
—
4
4
5
/
8
5
3
/
8
—
—
12
1
/
2
2
3
/
4
—
—
6
1
4
4
7
/
8
6
12
1
/
8
25
7
/
8
6
1
/
8
4
1
/
2
2
5
/
8
6
2
4
5
3
/
8
10
1
/
8
23
7
/
8
6
3
/
8
6
Horizont
a
l, left h
a
nd
u
nit with pre-he
a
t coil
s
hown.
Dimen
s
ion
s
a
re in inche
s
(mm).
HR - HOT WATER RETURN
H
S
- HOT WATER
S
UPPLY
LL - LIQUID LINE
S
L -
S
UCTION LINE
COIL HEADER CONNECTION
S
IZE (NOMINAL OD IN INCHE
S
)
Unit
Size
LL
SL
2 Row HW
1 Row HW
Nom.
Size
OD
Nom.
Size
OD
Nom.
Size
OD
Nom.
Size
OD
0
0
2(51)
B
D
6-7/
8
(175)
8
-5/
8
(219)
A
G
H
E
1-5/
8
(41)
F
C
06-12
1.125
1
/
4
3
/
4
0.
8
75
1
/
2
0.625
1
/
2
0.625
16-22
0.
3
75
1
/
4
1
1.125
1
1.125
1
/
2
0.625
3
0
0.625
1
/
2
1
1
/
2
1.125
1
1
/
2
1.625
1
1
/
2
1.625