Table 20 — Direct Expansion Coil Circuiting Data (cont)
MEDIUM FACE AREA COILS
39T UNIT SIZE 07 09 11 13
CIRCUITING TYPE Quarter Half Full Half Full Half Full Double Half Full Double
Airflow (cfm) at 550 fpm 2868 4026 4703 5977
Total Face Area (sq ft) 5.2 7.3 8.6 10.9
Tubes in Face 14 18 18 20
Tube Length (in.) 42
15
⁄
16
46
7
⁄
8
54
3
⁄
4
62
5
⁄
8
No. of Circuits — Total 4 7 14 9 18 9 18 36 10 20 40
4-Row Coil
Circuit Equivalent Length (in.) 69.6 39.1 24.8 41.7 26.1 47.0 28.7 — 52.2 31.4 —
Face-Split Coils
No. of TXVs 2 2 22222 — 22 —
No. of Circuits/Distributor* 2 3,4 7 4,5 9 4,5 9 — 5 10 —
Suction Connections (in. OD)
7
⁄
8
7
⁄
8
/1
1
⁄
8
1
3
⁄
8
1
1
⁄
8
1
3
⁄
8
1
1
⁄
8
1
3
⁄
8
—1
1
⁄
8
1
3
⁄
8
—
Distributor Connections (in. OD)
7
⁄
8
7
⁄
8
7
⁄
8
7
⁄
8
1
1
⁄
8
7
⁄
8
1
1
⁄
8
—
7
⁄
8
1
1
⁄
8
—
Distributor Tube Length (in.) 11 12 14 16 15 16 15 — 15 15 —
Distributor Nozzle Size† 3 3 34455 — 66 —
Row-Split Coils
No. of TXVs 2 2 22222 — 22 —
No. of Circuits/Distributor* 2 3,4 7 4,5 9 4,5 9 — 5 10 —
Suction Connections (in. OD)
7
⁄
8
7
⁄
8
/1
1
⁄
8
1
3
⁄
8
1
1
⁄
8
1
3
⁄
8
1
1
⁄
8
1
3
⁄
8
—1
1
⁄
8
1
3
⁄
8
—
Distributor Connections (in. OD)
7
⁄
8
7
⁄
8
7
⁄
8
7
⁄
8
1
1
⁄
8
7
⁄
8
1
1
⁄
8
—
7
⁄
8
1
1
⁄
8
—
Distributor Tube Length (in.) 11 12 14 16 15 16 15 — 15 15 —
Distributor Nozzle Size† 3 3 34455 — 66 —
6-Row Coil
Circuit Equivalent Length (in.) — 59.4 29.0 63.4 30.9 71.2 34.9 — 79.1 38.8 —
Face-Split Coils
No. of TXVs — 2 22222 — 22 —
No. of Circuits/Distributor* — 3,4 7 4,5 9 4,5 9 — 5 10 —
Suction Connections (in. OD) —
7
⁄
8
/1
1
⁄
8
1
3
⁄
8
1
1
⁄
8
1
3
⁄
8
1
1
⁄
8
1
3
⁄
8
—1
1
⁄
8
1
3
⁄
8
—
Distributor Connections (in. OD) —
7
⁄
8
7
⁄
8
7
⁄
8
1
1
⁄
8
7
⁄
8
1
1
⁄
8
—
7
⁄
8
1
1
⁄
8
—
Distributor Tube Length (in.) — 12 1416151615 — 1515 —
Distributor Nozzle Size† — 3 34455 — 66 —
Row-Split Coils
No. of TXVs — 2 22222 — 22 —
No. of Circuits/Distributor* — 3,4 7 4,5 9 4,5 9 — 5 10 —
Suction Connections (in. OD) —
7
⁄
8
/1
1
⁄
8
1
3
⁄
8
1
1
⁄
8
1
3
⁄
8
1
1
⁄
8
1
3
⁄
8
—1
1
⁄
8
1
3
⁄
8
—
Distributor Connections (in. OD) —
7
⁄
8
7
⁄
8
7
⁄
8
1
1
⁄
8
7
⁄
8
1
1
⁄
8
—
7
⁄
8
1
1
⁄
8
—
Distributor Tube Length (in.) — 12 1416151615 — 1515 —
Distributor Nozzle Size† — 3 34455 — 66 —
8-Row Coil
Circuit Equivalent Length (in.) — 79.7 39.1 85.0 41.7 — 47.0 22.7 — 52.2 25.4
Face-Split Coils
No. of TXVs — 2 2 2 2—2 4 —2 4
No. of Circuits/Distributor* — 3,4 7 4,5 9 — 9 9 — 10 10
Suction Connections (in. OD) —
7
⁄
8
/1
1
⁄
8
1
3
⁄
8
1
1
⁄
8
1
3
⁄
8
—1
3
⁄
8
1
3
⁄
8
—1
3
⁄
8
1
3
⁄
8
Distributor Connections (in. OD) —
7
⁄
8
7
⁄
8
7
⁄
8
1
1
⁄
8
—1
1
⁄
8
1
1
⁄
8
—1
1
⁄
8
1
1
⁄
8
Distributor Tube Length (in.) — 12 14 16 15 — 15 13 — 15 13
Distributor Nozzle Size† — 3 3 4 4—5 3 —6 3
Row-Split Coils
No. of TXVs — 2 2 2 2—2 4 —2 4
No. of Circuits/Distributor* — 3,4 7 4,5 9 — 9 9 — 10 10
Suction Connections (in. OD) —
7
⁄
8
/1
1
⁄
8
1
3
⁄
8
1
1
⁄
8
1
3
⁄
8
—1
3
⁄
8
1
3
⁄
8
—1
3
⁄
8
1
3
⁄
8
Distributor Connections (in. OD) —
7
⁄
8
7
⁄
8
7
⁄
8
1
1
⁄
8
—1
1
⁄
8
1
1
⁄
8
—1
1
⁄
8
1
1
⁄
8
Distributor Tube Length (in.) — 12 14 16 15 — 15 13 — 15 13
Distributor Nozzle Size† — 3 3 4 4—3 3 —6 3
LEGEND
TXV — Thermostatic Expansion Valve (Field-Supplied)
*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 61 medium face area coil has 6 circuits on each distributor; the lower coil has 6 circuits
on one distributor and 7 circuits on the other 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.
55
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