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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
2
2
2
2
2
—
2
2
—
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
3
4
4
5
5
—
6
6
—
Row-Split Coils
No. of TXVs
2
2
2
2
2
2
2
—
2
2
—
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
3
4
4
5
5
—
6
6
—
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
2
2
2
2
2
—
2
2
—
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
14
16
15
16
15
—
15
15
—
Distributor Nozzle Size†
—
3
3
4
4
5
5
—
6
6
—
Row-Split Coils
No. of TXVs
—
2
2
2
2
2
2
—
2
2
—
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
14
16
15
16
15
—
15
15
—
Distributor Nozzle Size†
—
3
3
4
4
5
5
—
6
6
—
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
Summary of Contents for 39T
Page 43: ...Fig 34 Discharge Fabrication Draw Thru Plenum Fans 43 ...
Page 49: ...Fig 41 Coil Connections and Lifting Points Fig 42 Steam Coil PIping 49 ...
Page 78: ...Fig 64 Blow Thru Unit Coil Removal Fig 65 Plan View Typical Coil 78 ...
Page 81: ...Fig 68 Filter Arrangement 2 in and 4 in Flat 81 ...
Page 82: ...Fig 68 Filter Arrangement 2 in and 4 in Flat cont 82 ...
Page 83: ...Fig 69 Filter Arrangement Angle Filters 2 in Only 83 ...
Page 84: ...Fig 69 Filter Arrangement Angle Filters 2 in Only cont 84 ...
Page 85: ...Fig 70 Filter Arrangement BCF1 Bag or Cartridge Draw Thru 85 ...
Page 86: ...Fig 70 Filter Arrangement BCF1 Bag or Cartridge Draw Thru cont 86 ...
Page 87: ...Fig 71 Filter Arrangement BCF3 Bag or Cartridge Blow Thru 87 ...
Page 88: ...Fig 71 Filter Arrangement BCF3 Bag or Cartridge Blow Thru cont 88 ...
Page 92: ...NOTE A frame shown shaded Fig 74 Fan Discharge Positions 92 ...
Page 102: ......
Page 103: ......