Table 20 — Direct Expansion Coil Circuiting Data (cont)
LARGE FACE AREA COILS (cont)
39T UNIT SIZE 61 74 92
CIRCUITING TYPE Half Full Double Half Full Double Half Full Double
Airflow (cfm) at 550 fpm 33,446 40,567 50,401
Total Face Area (sq ft) 60.8 73.8 91.6
Tubes in Face (Upper/Lower) 30/32 32/34 40/42
Tube Length (in.) 113 128
3
⁄
4
128
3
⁄
4
No. of Circuits — Total 31 62 124 33 66 132 41 82 164
COIL SECTIONS U L ULUL U L ULUL U L ULUL
4-Row Coil
Circuit Equivalent Length (in.) 85.8 85.8 48.2 48.2 — 96.3 96.3 53.4 53.4 — 96.3 96.3 53.4 53.4 —
Face-Split Coils
No. of TXVs 2222 — 2222 — 2244 —
No. of Circuits/Distributor* 7,8 8 15 16 8 8,9 16 17 — 10 10,11 10 10,11 —
Suction Connections (in. OD) 1
3
⁄
8
1
3
⁄
8
1
5
⁄
8
1
5
⁄
8
—1
3
⁄
8
1
3
⁄
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
1
1
⁄
8
1
3
⁄
8
1
3
⁄
8
—1
1
⁄
8
1
1
⁄
8
1
1
⁄
8
1
1
⁄
8
—
Distributor Tube Length (in.) 20 20 20 20 — 26 26 19 19 — 21 21 19 19 —
Distributor Nozzle Size† 12 12 17 17 — 20 20 20 20 — 25 25 12 12 —
Row-Split Coils
No. of TXVs 2222 — 2222 — 4444 —
No. of Circuits/Distributor* 7,8 8 15 16 — 8 8,9 16 17 — 5 5,6 10 10,11 —
Suction Connections (in. OD) 1
3
⁄
8
1
3
⁄
8
1
5
⁄
8
1
5
⁄
8
—1
3
⁄
8
1
3
⁄
8
1
5
⁄
8
1
5
⁄
8
—1
1
⁄
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
1
1
⁄
8
1
3
⁄
8
1
3
⁄
8
—
7
⁄
8
7
⁄
8
1
3
⁄
8
1
3
⁄
8
—
Distributor Tube Length (in.) 26 26 28 28 — 26 26 28 28 — 16 16 19 19 —
Distributor Nozzle Size† 12 12 17 17 — 20 20 20 20 — 12 12 12 12 —
6-Row Coil
Circuit Equivalent Length 129.5 129.5 64 64 — 145.2 145.2 71.9 71.9 — 145.2 145.2 71.9 71.9 —
Face-Split Coils
No. of TXVs 2222 — 2222 — 2244 —
No. of Circuits/Distributor* 7,8 8 15 16 — 8 8,9 16 17 — 10 10,11 10 10,11 —
Suction Connections (in. OD) 1
3
⁄
8
1
3
⁄
8
1
5
⁄
8
1
5
⁄
8
—1
3
⁄
8
1
3
⁄
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
1
1
⁄
8
1
3
⁄
8
1
3
⁄
8
—1
1
⁄
8
1
1
⁄
8
1
1
⁄
8
1
1
⁄
8
—
Distributor Tube Length (in.) 20 20 20 20 — 26 26 19 19 — 21 21 19 19 —
Distributor Nozzle Size† 12 12 17 17 — 20 20 20 20 — 25 25 12 12 —
Row-Split Coils
No. of TXVs 2222 — 2222 — 4444 —
No. of Circuits/Distributor* 7,8 8 15 16 — 8 8,9 16 17 — 5 5,6 10 10,11 —
Suction Connections (in. OD) 1
3
⁄
8
1
3
⁄
8
1
5
⁄
8
1
5
⁄
8
—1
3
⁄
8
1
3
⁄
8
1
5
⁄
8
1
5
⁄
8
—1
1
⁄
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
1
1
⁄
8
1
3
⁄
8
1
3
⁄
8
—
7
⁄
8
7
⁄
8
1
3
⁄
8
1
3
⁄
8
—
Distributor Tube Length (in.) 26 26 28 28 — 26 26 28 28 — 16 16 19 19 —
Distributor Nozzle Size† 12 12 17 17 — 20 20 20 20 — 12 12 12 12 —
8-Row Coil
Circuit Equivalent Length — 85.8 85.8 42.2 42.2 — 96.3 96.3 47.4 47.4 — 96.3 96.3 47.4 47.4
Face-Split Coils
No. of TXVs — 2244 — 2244 — 4488
No. of Circuits/Distributor* — 15 16 15 16 — 16 17 16 17 — 10 10,11 10 10,11
Suction Connections (in. OD) —1
5
⁄
8
1
5
⁄
8
1
5
⁄
8
1
5
⁄
8
—1
5
⁄
8
1
5
⁄
8
1
5
⁄
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
1
⁄
8
1
1
⁄
8
1
1
⁄
8
1
1
⁄
8
Distributor Tube Length (in.) — 20 20 20 20 — 19 19 19 19 — 19 19 13 13
Distributor Nozzle Size† — 17 17 8 8 — 20 20 10 10 — 12 12 6 6
Row-Split Coils
No. of TXVs — 2244 — 2244 — 4 4 88
No. of Circuits/Distributor* — 15 16 15 16 — 16 17 16 17 — 10 10,11 10 10,11
Suction Connections (in. OD) —1
5
⁄
8
1
5
⁄
8
1
5
⁄
8
1
5
⁄
8
—1
5
⁄
8
1
5
⁄
8
1
5
⁄
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
1
⁄
8
1
1
⁄
8
Distributor Tube Length (in.) — 28 28 20 20 — 28 28 19 19 — 19 19 13 13
Distributor Nozzle Size† — 17 17 8 8 — 20 20 10 10 — 12 12 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.
54
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