41
Table 11 —
Direct-Expansion Circuiting Data
Medium Face Area Coils
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
03W
06W
07T
08W
09T
10W
CIRCUITING TYPE
Quarter Half
Quarter Half
Full
Quarter Half
Full
Double Quarter Half
Full
Quarter Half
Full
Double Quarter Half
Full
Airflow (cfm) at 500 fpm
1,215
2,066
2,708
2,778
3,524
3,611
Total Face Area (sq ft)
2.4
4.1
5.4
5.6
7.0
7.2
Tubes in Face
14
14
14
14
14
24
24
24
24
16
16
16
28
28
28
28
16
16
16
Tube Length (in.)
20
20
34
34
34
26
26
26
26
40
40
40
29
29
29
29
52
52
52
No. of Circuits - Total
4
7
4
7
14
6
12
24
48
4
8
16
7
14
28
56
4
8
16
4-Row Coil
Face Split Coils
No. of TXVs
2
2
2
2
-
—
2
2
2
—
2
2
—
2
2
2
—
2
2
—
Suction Connections (in. OD)
7/8
7/8
7/8
7/8
-
—
7/8
1-1/8
1-3/8
-
—
7/8
7/8
-
—
7/8
1-1/8
1-5/8
-
—
7/8
7/8
—
Distributor Connections (in.
OD)
7/8
7/8
7/8
7/8
-
—
7/8
7/8
1-3/8
—
7/8
7/8
—
7/8
7/8
1-3/8
—
7/8
7/8
Distributor Nozzle Size
G-1.5
G-2.5/
G-2
G-1.5
G-2.5/
G-2
-
—
G-2
G-4
C-12
—
G-1.5
G-2.5
—
G-2.5/
G-2
G-6
C-15
—
G-1.5
G-2.5
—
Intertwined Row Split Coils
No. of TXVs
2
2
2
2
-
—
2
2
2
—
2
2
—
2
2
2
—
2
2
—
Suction Connections (in. OD)
7/8
7/8
7/8
7/8
-
—
7/8
1-1/8
1-3/8
—
7/8
7/8
—
7/8
1-1/8
1-5/8
—
7/8
7/8
—
Distributor Connections (in.
OD)
7/8
7/8
7/8
7/8
-
—
7/8
7/8
1-3/8
—
7/8
7/8
—
7/8
7/8
1-3/8
—
7/8
7/8
—
Distributor Nozzle Size
G-1.5
G-2.5/
G-2
G-1.5
G-2.5/
G-2
-
—
G-2
G-4
C-12
—
G-1.5
G-2.5
—
G-2.5/
G-2
G-6
C-15
—
G-1.5
G-2.5
—
Single Circuit Coils
No. of TXVs
1
1
1
1
—
1
1
—
—
1
1
—
1
1
—
—
1
1
—
Suction Connections (in. OD)
7/8
1-1/8
7/8
1-1/8
—
1-1/8
1-3/8
—
—
7/8
1-1/8
—
1-1/8
1-5/8
—
—
7/8
1-1/8
—
Distributor Connections (in.
OD)
7/8
7/8
7/8
7/8
—
7/8
1-3/8
—
—
7/8
7/8
—
7/8
1-3/8
—
—
7/8
7/8
—
Distributor Nozzle Size
G-2.5
G-6
G-2.5
G-6
—
G-4
C-12
—
—
G-2.5
G-8
—
G-6
C-15
—
—
G-2.5
G-8
—
6-Row Coil
Face Split Coils
No. of TXVs
2
2
2
2
—
—
2
2
—
2
2
—
—
2
2
—
2
2
—
Suction Connections (in. OD)
7/8
7/8
7/8
7/8
—
—
1-1/8
1-3/8
—
7/8
7/8
—
—
1-1/8
1-5/8
—
7/8
7/8
—
Distributor Connections (in.
OD)
7/8
7/8
7/8
7/8
—
—
7/8
1-3/8
—
7/8
7/8
—
—
7/8
1-3/8
—
7/8
7/8
—
Distributor Nozzle Size
G-1.5
G-2.5/
G-2
G-1.5
G-2.5/
G-2
—
—
G-4
C-12
—
G-1.5
G-2.5
—
—
G-6
C-15
—
G-1.5
G-2.5
—
Intertwined Row Split Coils
No. of TXVs
2
2
2
2
—
—
2
2
—
2
2
—
—
2
2
—
2
2
—
Suction Connections (in. OD)
7/8
7/8
7/8
7/8
—
—
1-1/8
1-3/8
—
7/8
7/8
—
—
1-1/8
1-5/8
—
7/8
7/8
—
Distributor Connections (in.
OD)
7/8
7/8
7/8
7/8
—
—
7/8
1-3/8
—
7/8
7/8
—
—
7/8
1-3/8
—
7/8
7/8
—
Distributor Nozzle Size
G-1.5
G-2.5/
G-2
G-1.5
G-2.5/
G-2
—
—
G-4
C-12
—
G-1.5
G-2.5
—
—
G-6
C-15
—
G-1.5
G-2.5
—
Single Circuit Coils
No. of TXVs
1
1
1
1
—
—
1
—
—
1
1
—
—
1
—
—
1
1
—
Suction Connections (in. OD)
7/8
1-1/8
7/8
1-1/8
—
—
1-3/8
—
—
7/8
1-1/8
—
—
1-5/8
—
—
7/8
1-1/8
—
Distributor Connections (in.
OD)
7/8
7/8
7/8
7/8
—
—
1-3/8
—
—
7/8
7/8
—
—
1-3/8
—
—
7/8
7/8
—
Distributor Nozzle Size
G-2.5
G-6
G-2.5
G-6
—
—
C-12
—
—
G-2.5
G-8
—
—
C-15
—
—
G-2.5
G-8
—
8-Row Coil
Face Split Coils
No. of TXVs
—
2
—
2
2
—
2
2
4
—
2
2
—
2
2
4
—
2
2
Suction Connections (in. OD)
—
7/8
—
7/8
1-1/8
—
1-1/8
1-3/8
1-3/8
—
7/8
1-1/8
—
1-1/8
1-5/8
1-5/8
—
7/8
1-1/8
Distributor Connections (in.
OD)
—
7/8
—
7/8
7/8
—
7/8
1-3/8
1-3/8
—
7/8
7/8
—
7/8
1-3/8
1-3/8
—
7/8
7/8
Distributor Nozzle Size
—
G-2.5/
G-2
—
G-2.5/
G-2
G-6
—
G-4
C-12
C-12
—
G-2.5
G-8
—
G-6
C-15
C-15
—
G-2.5
G-8
Intertwined Row Split Coils
No. of TXVs
—
2
—
2
2
—
2
2
4
—
2
2
—
2
2
4
—
2
2
Suction Connections (in. OD)
—
7/8
—
7/8
1-1/8
—
1-1/8
1-3/8
1-3/8
—
7/8
1-1/8
—
1-1/8
1-5/8
1-5/8
—
7/8
1-1/8
Distributor Connections (in.
OD)
—
7/8
—
7/8
7/8
—
7/8
1-3/8
1-3/8
—
7/8
7/8
—
7/8
1-3/8
1-3/8
—
7/8
7/8
Distributor Nozzle Size
—
G-2.5/
G-2
—
G-2.5/
G-2
G-6
—
G-4
C-12
C-12
—
G-2.5
G-8
—
G-6
C-15
C-15
—
G-2.5
G-8
Single Circuit Coils
No. of TXVs
1
1
—
1
—
—
1
—
—
—
1
—
—
1
—
—
-
—
1
—
Suction Connections (in. OD)
7/8
1-1/8
—
1-1/8
—
—
1-3/8
—
—
—
1-1/8
—
—
1-5/8
—
—
—
1-1/8
—
Distributor Connections (in.
OD)
7/8
7/8
—
7/8
—
—
1-3/8
—
—
—
7/8
—
—
1-3/8
—
—
—
7/8
—
Distributor Nozzle Size
G-2.5
G-6
—
G-6
—
—
C-12
—
—
—
G-8
—
—
C-15
—
—
—
G-8
—