Table 20 — Direct Expansion Coil Circuiting Data (cont)
LARGE FACE AREA COILS (cont)
39T UNIT SIZE 32 39 49
CIRCUITING TYPE Half Full Double Half Full Double Half Full Double
Airflow (cfm) at 550 fpm 17,898 21,334 27,052
Total Face Area (sq ft) 32.5 38.8 49.2
Tubes in Face (Upper/Lower) 22/24 24/26 28/28
Tube Length (in.) 81
1
⁄
2
89
3
⁄
8
101
3
⁄
16
No. of Circuits — Total 23 46 92 25 50 100 28 56 112
COIL SECTIONS ULULUL U L ULUL U L ULUL
4-Row Coil
Circuit Equivalent Length (in.) 64.8 64.8 37.7 37.7 — 70.1 70.1 40.3 40.3 — 78 78 44.2 44.2 —
Face-Split Coils
No. of TXVs 22 22 — 2 2 22 — 2 2 22 —
No. of Circuits/Distributor* 5, 6 6 11 12 — 6 6,7 12 13 — 7 7 14 14 —
Suction Connections (in. OD) 1
1
⁄
8
1
1
⁄
8
1
3
⁄
8
1
3
⁄
8
—1
1
⁄
8
1
3
⁄
8
1
3
⁄
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
—
7
⁄
8
7
⁄
8
1
3
⁄
8
1
3
⁄
8
—
7
⁄
8
7
⁄
8
1
3
⁄
8
1
3
⁄
8
—
Distributor Tube Length (in.) 15 15 14 14 — 15 15 18 18 — 15 15 21 21 —
Distributor Nozzle Size† 10 10 10 10 — 12 12 12 12 — 12 12 15 15 —
Row-Split Coils
No. of TXVs 22 22 — 2 2 22 — 2 2 22 —
No. of Circuits/Distributor* 5, 6 6 11 12 — 6 6,7 12 13 — 7 7 14 14 —
Suction Connections (in. OD) 1
1
⁄
8
1
1
⁄
8
1
3
⁄
8
1
3
⁄
8
—1
1
⁄
8
1
3
⁄
8
1
3
⁄
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
—
7
⁄
8
7
⁄
8
1
3
⁄
8
1
3
⁄
8
—
7
⁄
8
7
⁄
8
1
3
⁄
8
1
3
⁄
8
—
Distributor Tube Length (in.) 19 19 22 22 — 21 21 23 23 — 23 23 23 23 —
Distributor Nozzle Size† 10 10 10 10 — 12 12 12 12 — 12 12 15 15 —
6-Row Coil
Circuit Equivalent Length 98.0 98.0 48.3 48.3 — 105.9 105.9 52.2 52.2 — 117.7 117.7 58.1 58.1 —
Face-Split Coils
No. of TXVs 22 22 — 2 2 22 — 2 2 22 —
No. of Circuits/Distributor* 5, 6 6 11 12 — 6 6,7 12 13 — 7 7 14 14 —
Suction Connections (in. OD) 1
1
⁄
8
1
1
⁄
8
1
3
⁄
8
1
3
⁄
8
—1
1
⁄
8
1
3
⁄
8
1
3
⁄
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
—
7
⁄
8
7
⁄
8
1
3
⁄
8
1
3
⁄
8
—
7
⁄
8
7
⁄
8
1
3
⁄
8
1
3
⁄
8
—
Distributor Tube Length (in.) 15 15 14 14 — 15 15 18 18 — 15 15 21 21 —
Distributor Nozzle Size† 10 10 10 10 — 12 12 12 12 — 12 12 15 15 —
Row-Split Coils
No. of TXVs 22 22 — 2 2 22 — 2 2 22 —
No. of Circuits/Distributor* 5, 6 6 11 12 — 6 6,7 12 13 — 7 7 14 14 —
Suction Connections (in. OD) 1
1
⁄
8
1
1
⁄
8
1
3
⁄
8
1
3
⁄
8
—1
1
⁄
8
1
1
⁄
8
1
3
⁄
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
—
7
⁄
8
7
⁄
8
1
3
⁄
8
1
3
⁄
8
—
7
⁄
8
7
⁄
8
1
3
⁄
8
1
3
⁄
8
—
Distributor Tube Length (in.) 19 19 22 22 — 21 21 23 23 — 23 23 23 23 —
Distributor Nozzle Size† 10 10 10 10 — 12 12 12 12 — 12 12 15 15 —
8-Row Coil
Circuit Equivalent Length — 64.8 64.8 31.7 31.7 — 70.1 70.1 34.3 34.3 — 78 78 38.2 38.2
Face-Split Coils
No. of TXVs — 2244 — 2244 — 2244
No. of Circuits/Distributor* — 11 12 11 12 — 12 13 12 13 — 14 14 14 14
Suction Connections (in. OD) —1
3
⁄
8
1
3
⁄
8
1
3
⁄
8
1
3
⁄
8
—1
3
⁄
8
1
5
⁄
8
1
3
⁄
8
1
5
⁄
8
—1
5
⁄
8
1
5
⁄
8
1
5
⁄
8
1
5
⁄
8
Distributor Connections (in. OD) —1
3
⁄
8
1
3
⁄
8
1
3
⁄
8
1
3
⁄
8
—1
3
⁄
8
1
3
⁄
8
1
3
⁄
8
1
3
⁄
8
—1
3
⁄
8
1
3
⁄
8
1
3
⁄
8
1
3
⁄
8
Distributor Tube Length (in.) — 14141414 — 18181818 — 21212121
Distributor Nozzle Size† — 10 10 5 5 — 12 12 6 6 — 15 15 6 6
Row-Split Coils
No. of TXVs — 2244 — 2244 — 2244
No. of Circuits/Distributor* — 11 12 11 12 — 12 13 12 13 — 14 14 14 14
Suction Connections (in. OD) —1
3
⁄
8
1
3
⁄
8
1
3
⁄
8
1
3
⁄
8
—1
3
⁄
8
1
5
⁄
8
1
3
⁄
8
1
5
⁄
8
—1
5
⁄
8
1
5
⁄
8
1
5
⁄
8
1
5
⁄
8
Distributor Connections (in. OD) —1
3
⁄
8
1
3
⁄
8
1
3
⁄
8
1
3
⁄
8
—1
3
⁄
8
1
3
⁄
8
1
3
⁄
8
1
3
⁄
8
—1
3
⁄
8
1
3
⁄
8
1
3
⁄
8
1
3
⁄
8
Distributor Tube Length (in.) — 22221414 — 23231818 — 23232121
Distributor Nozzle Size† — 10 10 5 5 — 12 12 6 6 — 15 15 6 6
LEGEND
L—Lower
TXV — Thermostatic Expansion Valve (Field-Supplied)
U—Upper
*Where each distributor has the same number of circuits, that number is shown once. When a coil has an uneven
number of circuits per distributor, both values are shown. For example, the upper coil of a half-circuit size 32 large
face area coil has 5 circuits on one distributor and 6 circuits on the other distributor; the lower coil has 6 circuits on
each distributor.
†Factory-supplied distributors have factory-selected nozzle sizes shown. If necessary, replace factory-supplied nozzles
with field-supplied and installed nozzles. Consult Electronic Catalog
AHU Builder™
program for correct nozzle
selection.
53
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