51
Table 11 — Direct-Expansion Circuiting Data (cont)
Large 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
AHUBui
lder
®
software selection program for correct nozzle selection.
39M UNIT SIZE 25T 30W 30T
CIRCUITING TYPE
Half Full Double Half Full Double Half Full Double
Airflow (cfm) at 500 fpm
12,335 15,174 14,852
Total Face Area (sq ft)
24.7 30.3 29.7
Tubes in Face
28 30 28 30 28 30 38 38 38 28 30 28 30 28 30
Tube Length (in.)
49 49 49 49 49 49 92 92 92 59 59 59 59 59 59
No. of Circuits - Total
14 15 28 30 56 60 19 38 76 14 15 28 30 56 60
4-Row Coil
Upper Lower Upper Lower Upper Lowe
r Upper Lower Upper Lower Upper Lower
Fa
ce Split Coils
No. of TXVs
2 2 2 2 — — 2 2 — 2 2 2 2 — —
Suction Connections (in. OD)
1-1/8 1-1/8 1-5/8 1-5/8 — — 1-3/8 1-5/8 — 1-1/8 1-1/8 1-5/8 1-5/8 — —
Distributor Connections (in. OD)
7/8 7/8 1-3/8 1-3/8 — — 1-1/8 1-3/8 — 7/8 7/8 1-3/8 1-3/8 — —
Distributor Nozzle Size
G-6 G-8/G-6 C-15 C-15 — — E-10/E-8 C-20 — G-6 G-8/G-6 C-15 C-15 — —
Intertwined Row Split Coils
No. of
TXVs
2 2 2 2 — — 2 2 — 2 2 2 2 — —
Suc
tion Connections (in. OD)
1-1/8 1-1/8 1-5/8 1-5/8 — — 1-3/8 1-5/8 — 1-1/8 1-1/8 1-5/8 1-5/8 — —
Distributor Connections (in. OD)
7/8 7/8 1-3/8 1-3/8 — — 1-1/8 1-3/8 — 7/8 7/8 1-3/8 1-3/8 — —
Distributor Nozzle Size
G-6 G-8/G-6 C-15 C-15 — — E-10/E-8 C-20 — G-6 G-8/G-6 C-15 C-15 — —
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 2 — — 2 2 — 2 2 2 2 — —
Suction Connections (in. OD)
1-1/8 1-1/8 1-5/8 1-5/8 — — 1-3/8 1-5/8 — 1-1/8 1-1/8 1-5/8 1-5/8 — —
Distributor Connections (in. OD)
7/8 7/8 1-3/8 1-3/8 — — 1-1/8 1-3/8 — 7/8 7/8 1-3/8 1-3/8 — —
Distributor Nozzle Size
G-6 G-8/G-6 C-15 C-15 — — E-1
0/E-8 C-20 — G-6 G-8/G-6 C-15 C-15 — —
Int
ertwined Row Split Coils
No. of TXVs
2 2 2 2 — — 2 2 — 2 2 2 2 — —
Suction Connections (in. OD)
1-1/8 1-1/8 1-5/8 1-5/8 — — 1-3/8 1-5/8 — 1-1/8 1-1/8 1-5/8 1-5/8 — —
Distributor Connections (in. OD)
7/8 7/8 1-3/8 1-3/8 — — 1-1/8 1-3/8 — 7/8 7/8 1-3/8 1-3/8 — —
Distributor Nozzle Size
G-6 G-8/G-6 C-15 C-15 — — E-10/E-8 C-20 — G-6 G-8/G-6 C-15 C-15 — —
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 2 2 4 4 2 2 4 2 2 2 2 4 4
Suction Connections (in. OD)
1-1/8 1-1/8 1-5/8 1-5/8 1-5/8 1-5/8 1-3/8 1-5/8 1-5/8 1-1/8 1-1/8 1-5/8 1-5/8 1-5/8 1-5/8
Distributor Connections (in. OD)
7/8 7
/8 1-3/8 1-3/8 1-3/8 1-3/8 1-1/8 1-3/8 1-3/8 7/8 7/8 1-3/8 1-3/8 1-3/8 1-3/8
Distribut
or Nozzle Size
G-6 G-8/G-6 C-15 C-15 C-15 C-15 E-10/E-8 C-20 C-20 G-6 G-8/G-6 C-15 C-15 C-15 C-15
Intertwined Row Split Coils
No. of TXVs
2 2 2 2 4 4 2 2 4 2 2 2 2 4 4
Suction Connections (in. OD)
1-1/8 1-1/8 1-5/8 1-5/8 1-5/8 1-5/8 1-3/8 1-5/8 1-5/8 1-1/8 1-1/8 1-5/8 1-5/8 1-5/8 1-5/8
Distributor Connections (in. OD)
7/8 7/8 1-3/8 1-3/8 1
-3/8 1-3/8 1-1/8 1-3/8 1-3/8 7/8 7/8 1-3/8 1-3/8 1-3/8 1-3/8
Distribut
or Nozzle Size
G-6 G-8/G-6 C-15 C-15 C-15 C-15 E-10/E-8 C-20 C-20 G-6 G-8/G-6 C-15 C-15 C-15 C-15
Single Circuit Coils
No. of TXVs
— — — — — — — — — — — — — — —
Suction Connections (in. OD)
— — — — — — — — — — — — — — —
Distributor Connections (in. OD)
— — — — — — — — — — — — — — —
Distributor Nozzle Size
— — — — — — — — — — — — — — —