Carrier 42DH 06 Installation, Start-Up And Service Instructions Manual page 9

D
C
B
A
2(51)
1-5/8(41)
0
COIL ROWS
42DH
UNIT
Water
DX Only
SIZE
Pre-Heat
4
—
6
4
06/08 1
6
4
2
6
4
—
6
4
10/12 1
6
4
2
6
4
—
6
4
16 1
6
4
2
6
4
—
6
4
20/22 1
6
4
2
6
4
—
6
4
30 1
6
4
2
6
Fig. 15 — DX Coil Piping Connection Diagram
Table 3 — DX Coil Piping Connection
A B C
—
4 3 / 5 1 /
4 2
6
—
6 / 7 /
1 1
2 8
5 1
—
7 1 /
8
6 / 5
1 1
2
6 / 10
3
8
—
6 1 / 7 1 /
2 8
5
1
6 / 7 / 11
3 1
4 4
4 / 5 / —
5 3
8 8
6 12
4 7 /
8
5 3 / 10
8
9
HR - HOT WATER RETURN
HS - HOT WATER SUPPLY
LL - LIQUID LINE
SL - SUCTION LINE
COIL HEADER CONNECTION SIZE (NOMINAL OD IN INCHES)
LL
Unit
Nom.
Size
Size
06-12 1 /
4
1
16-22 /
4
1
30 /
2
Horizontal, left hand unit with pre-heat coil shown.
Dimensions are in inches (mm).
D E
—
12 1 /
2
18
—
12 /
1
2
/ 17 1 /
8 8
—
/ 17 / 12 /
1 1
8 8 2
13 /
5
8
—
/ 19 / 12 /
3 1
4 4 2
/ 15 /
5 7
8 8
—
/ 25 / 12 /
1 7 1
8 8 2
1 / 23 7 /
8 8
SL 2 Row HW
Nom. Nom.
OD Size OD Size OD
1.125 3 / 0.875 1 / 0.625
4 2
0.375 1 1.125 1 1.125
1 1
0.625 1 / 1.125 1 / 1.625
2 2
F G
2 3 / —
4
3 3 / 2 5 /
4 8
4 7 / 3 1 /
8 4
2 3 / 3 3 /
4 4
3 / 2 /
3 5
4 8
4 / 3 /
7 1
8 4
2 / —
3
4
3 / 2 /
3 5
4 8
6 / 4 /
6 1
4 8
2 / —
3
4
3 / 2 /
3 5
4 8
6 / 4 /
3 1
4 4
2 / —
3
4
6 /
1
8
4 1 /
2
6 3 /
8
1 Row HW
Nom.
Size
OD
1 / 0.625
2
1
/ 0.625
2
1
1 / 1.625
2
H
—
2 5 /
8
3 1 /
4
—
2 /
5
8
3 /
1
4
—
2 /
5
8
2 /
5
8
—
2 /
5
8
2 /
5
8
—
2 5 /
8