43
Table 11 —
Direct-Expansion Circuiting Data (cont)
Medium Face Area Coils (cont)
LEGEND
TXV —
Thermostatic Expansion Valve (Field Supplied)
*When 2 nozzle sizes are listed, the smaller nozzle should be located on the upper distributor.
NOTE: Factory-supplied distributors have factory-selected nozzle sizes as shown. If necessary,
replace factory-supplied nozzles with field-supplied and installed nozzles. Consult
AHU
Builder
®
software selection program for correct nozzle selection.
39M UNIT SIZE
21W
22T
25W
25T
30W
CIRCUITING TYPE
Half
Full
Double
Half
Full
Double
Half
Full
Double
Half
Full
Double
Half
Full
Double
Airflow (cfm) at 500 fpm
9,028
8,976
10,278
9,358
12,778
Total Face Area (sq ft)
18.1
18.0
20.6
18.7
25.6
Tubes in Face
32
32
32
44
44
44
32
32
32
44
44
44
32
32
32
Tube Length (in.)
65
65
65
47
47
47
74
74
74
49
49
49
92
92
92
No. of Circuits - Total
16
32
64
22
44
88
16
32
64
22
44
88
16
32
64
4-Row Coil
Face Split Coils
No. of TXVs
2
2
—
2
4
-
—
2
2
—
2
4
—
2
2
—
Suction Connections (in. OD)
1-1/8
1-5/8
—
1-3/8
1-3/8
-
—
1-1/8
1-5/8
—
1-3/8
1-3/8
—
1-1/8
1-5/8
—
Distributor Connections (in. OD)
7/8
1-3/8
—
1-1/8
1-1/8
—
7/8
1-3/8
—
1-1/8
1-1/8
—
7/8
1-3/8
—
Distributor Nozzle Size
G-8
C-17
—
E-12
E-12
—
G-8
C-17
—
E-12
E-12
—
G-8
C-17
—
Intertwined Row Split Coils
No. of TXVs
2
2
—
2
4
—
-
2
2
—
2
4
—
2
2
—
Suction Connections (in. OD)
1-1/8
1-5/8
—
1-3/8
1-3/8
-
—
1-1/8
1-5/8
—
1-3/8
1-3/8
—
1-1/8
1-5/8
—
Distributor Connections (in. OD)
7/8
1-3/8
—
1-1/8
1-1/8
—
7/8
1-3/8
—
1-1/8
1-1/8
—
7/8
1-3/8
—
Distributor Nozzle Size
G-8
C-17
—
E-12
E-12
—
G-8
C-17
—
E-12
E-12
—
G-8
C-17
—
Single Circuit Coils
No. of TXVs
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Suction Connections (in. OD)
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Distributor Connections (in. OD)
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Distributor Nozzle Size
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
6-Row Coil
Face Split Coils
No. of TXVs
2
2
—
2
4
—
2
2
—
2
4
—
2
2
—
Suction Connections (in. OD)
1-1/8
1-5/8
—
1-3/8
1-3/8
—
1-1/8
1-5/8
—
1-3/8
1-3/8
—
1-1/8
1-5/8
—
Distributor Connections (in. OD)
7/8
1-3/8
—
1-1/8
1-1/8
—
7/8
1-3/8
—
1-1/8
1-1/8
—
7/8
1-3/8
—
Distributor Nozzle Size
G-8
C-17
—
E-12
E-12
—
G-8
C-17
—
E-12
E-12
—
G-8
C-17
—
Intertwined Row Split Coils
No. of TXVs
2
2
—
2
4
—
2
2
—
2
4
—
2
2
—
Suction Connections (in. OD)
1-1/8
1-5/8
—
1-3/8
1-3/8
—
1-1/8
1-5/8
—
1-3/8
1-3/8
—
1-1/8
1-5/8
—
Distributor Connections (in. OD)
7/8
1-3/8
—
1-1/8
1-1/8
—
7/8
1-3/8
—
1-1/8
1-1/8
—
7/8
1-3/8
—
Distributor Nozzle Size
G-8
C-17
—
E-12
E-12
—
G-8
C-17
—
E-12
E-12
—
G-8
C-17
—
Single Circuit Coils
No. of TXVs
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Suction Connections (in. OD)
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Distributor Connections (in. OD)
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Distributor Nozzle Size
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
8-Row Coil
Face Split Coils
No. of TXVs
2
2
4
2
4
8
2
2
4
2
4
8
2
2
4
Suction Connections (in. OD)
1-1/8
1-5/8
1-5/8
1-3/8
1-3/8
1-3/8
1-1/8
1-5/8
1-5/8
1-3/8
1-3/8
1-3/8
1-1/8
1-5/8
1-5/8
Distributor Connections (in. OD)
7/8
1-3/8
1-3/8
1-1/8
1-1/8
1-1/8
7/8
1-3/8
1-3/8
1-1/8
1-1/8
1-1/8
7/8
1-3/8
1-3/8
Distributor Nozzle Size
G-8
C-17
C-17
E-12
E-12
E-12
G-8
C-17
C-17
E-12
E-12
E-12
G-8
C-17
C-17
Intertwined Row Split Coils
No. of TXVs
—
2
4
—
4
8
2
2
4
—
4
8
—
2
4
Suction Connections (in. OD)
—
1-5/8
1-5/8
—
1-3/8
1-3/8
1-1/8
1-5/8
1-5/8
—
1-3/8
1-3/8
—
1-5/8
1-5/8
Distributor Connections (in. OD)
—
1-3/8
1-3/8
—
1-1/8
1-1/8
7/8
1-3/8
1-3/8
—
1-1/8
1-1/8
—
1-3/8
1-3/8
Distributor Nozzle Size
—
C-17
C-17
—
E-12
E-12
G-8
C-17
C-17
—
E-12
E-12
—
C-17
C-17
Single Circuit Coils
No. of TXVs
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Suction Connections (in. OD)
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Distributor Connections (in. OD)
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Distributor Nozzle Size
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—