Carrier 42DH - Page 13

13
Fig. 20 — 42DH DX Coil Piping Connection Diagram, Left Hand Unit with Preheat Coil Shown
Fig. 21 — 42DV DX Coil Piping Connection Diagram, Right Hand Unit with Preheat Coil Shown
NOTES:
1. Horizontal, left hand unit with pre-heat coil shown.
2. Dimensions are in inches (mm).
HR - Hot Water Return
HS - Hot Water Supply
LL - Liquid Line
SL - Suction Line
COIL HEADER CONNECTION SIZE (NOMINAL OD IN INCHES)
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 0.3751/4 3/4 0.875 1/2 0.625 1/2 0.625
16-22 0.3751/4 1 1.125 1 1.125 1/2 0.625
30 0.6251/2 1- 1/2 1.625 1-1/2 1.625 1-1/2 1.625
LEGEND
HR
HS
SL
LL
Return Air
Drain
LH TELL-TALE
RH TELL-TALE
NOTE: Vertical, right hand unit with pre-heat coil shown.
HR - Hot Water Return
HS - Hot Water Supply
LL - Liquid Line
SL - Suction Line
0
0
2(51)
B
6-7/8(175) 8-5/8(219)
A
G
DRAIN
RH UNIT
E
1-5/8(41)
F
C
LH UNIT
D
H
TELL-TALE TELL-TALE
COIL HEADER CONNECTION SIZE (NOMINAL OD IN INCHES)
Unit
Size
LL SL 2 Row HW 1 Row HW
Nom.
Size
OD
Nom.
Size
OD
Nom.
Size
OD
Nom.
Size
OD
06-12 0.3751/4 3/4 0.875 1/2 0.625 1/2 0.625
16-22 0.3751/4 1 1.125 1 1.125 1/2 0.625
30 0.6251/4 1-1/2 1.625 1-1/2 1.625 1-1/2 1.625
LEGEND
HR
HS
SL
LL
Return Air