45
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 field-installed nozzles. Consult
AHUBuilder
®
software selection program for correct nozzle selection.
39M UNIT SIZE 42T 50W 51T 58T
CIRCUITING TYPE
Half Full Double Full Double Half Full Double Half Full Double
Airflow (cfm) at 500 fpm
17,448 19,861 21,094 23,906
Total Face Area (sq ft)
34.9 39.7 42.2 47.8
Tubes in Face
30 30 30 30 30 30 44 44 30 30 30 30 30 30 34 34 34 34 34 34
Tube Length (in.)
67 67 67 67 67 67 104 104 81 81 81 81 81 81 81 81 81 81 81 81
No. of Circuits - Total
15 15 30 30 60 60 44 88 1
5 15 30 30 60 60 17 17 34 34 68 68
4-Row
Coil
Upper Lower Upper Lower Upper Lower Upper Lower Upper Lower Upper Lower Upper Lower Upper Lower Upper Lower
Face Split Coils
No. of TXVs
2 2 2 2 — — 4 — 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 — 1-1/8 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)
7/8 7/8 1-3/8 1-3/8 — — 1-1/8 — 7/8 7/8 1-3/8 1-3/8 — — 1-1/8 1-1/8 1-3/8 1-3/8
— —
Distributor Nozzle Size
G-8/G-6 G-8/G-6 C-15 C-15 — — E-12 — G-8/G-6 G-8/G-6 C-15 C-15 — — E-8 E-8 C-17 C-17
— —
Intertwined Row Split Coils
No. of TXVs
2 2 2 2 — — 4 — 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 — 1-1/8 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)
7/8 7/8 1-3/8 1-3/8 — — 1-1/8 — 7/8 7/8 1-3/8 1-3/8 — — 1-1/8 1-1/8 1-3/8 1-3/8
— —
Distributor Nozzle Size
G-8/G-6 G-8/G-6 C-15 C-15 — — E-12 — G-8/G-6 G-8/G-6 C-15 C-15 — — E-8 E-8 C-17 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 2 — — 4 — 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 — 1-1/8 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)
7/8 7/8 1-3/8 1-3/8 — — 1-1/8 — 7/8 7/8 1-3/8 1-3/8 — — 1-1/8 1-1/8 1-3/8 1-3/8
— —
Distributor Nozzle Size
G-8/G-6 G-8/G-6 C-15 C-15 — — E-12 — G-8/G-6 G-8/G-6 C-15 C-15 — — E-8 E-8 C-17 C-17
— —
Intertwined Row Split Coils
No. of TXVs
2 2 2 2 — — 4 — 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 — 1-1/8 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)
7/8 7/8 1-3/8 1-3/8 — — 1-1/8 — 7/8 7/8 1-3/8 1-3/8 — — 1-1/8 1-1/8 1-3/8 1-3/8
— —
Distributor Nozzle Size
G-8/G-6 G-8/G-6 C-15 C-15 — — E-12 — G-8/G-6 G-8/G-6 C-15 C-15 — — E-8 E-8 C-17 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 2 2 4 4 4 8 2 2 2 2 4 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 1-3/8 1-1/8 1-1/8 1-5/8 1-5/8 1-5/8 1-5/8 1-3/8 1-3/8 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 1-1/8 7/8 7/8 1-3/8 1-3/8 1-3/8 1-3/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-3/8
Distribut
or Nozzle Size
G-8/G-6 G-8/G-6 C-15 C-15 C-15 C-15 E-12 E-12 G-8/G-6 G-8/G-6 C-15 C-15 C-15 C-15 E-8 E-8 C-17 C-17 C-17 C-17
Intertwined Row Split Coils
No. of TXVs
2 2 2 2 4 4 4 8 2 2 2 2 4 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 1-3/8 1-1/8 1-1/8 1-5/8 1-5/8 1-5/8 1-5/8 1-3/8 1-3/8 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 1-1/8 7/8 7/8 1-3/8 1-3/8 1-3/8 1-3/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-3/8
Distributor Nozzle Size
G-8/G-6 G-8/G-6 C-15 C-15 C-15 C-15 E-12 E-12 G-8/G-6 G-8/G-6 C-15 C-15 C-15 C-15 E-8 E-8 C-17 C-17 C-17 C-17
Single Circuit Coils
No. of TXVs
— — — — — — — — — — — — — —
— — — — — —
Suction Connections (in. OD)
— — — — — — — — — — — — — —
— — — — — —
Distributor Connections (in. OD)
— — — — — — — — — — — — — —
— — — — — —
Distributor Nozzle Size
— — — — — — — — — — — — — —
— — — — — —