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7-6. DX COIL Guideline TF
- Guideline TF -
< TF, DDC (control with SA) type >
No. of refrigerant circuit by Dx-coil copper tube dia. and Dx-coil size (Ton)
Copper tube diameter
Dx-coil capacity
5 Ton
6 Ton
8 Ton
10 Ton
12 Ton
14 Ton
16 Ton
20 Ton
24 Ton
28 Ton
32 Ton
Ton
Std.
AHU Air flow rate
Min.
(cfm)
Max.
Min.
Dx-coil internal
volume (inch
3
)
Max.
Copper tube dia. (inch)
Max. Capacity (kBtu/h)
Coil on Air temp.
Evaporating temp.
Superheat
Air Suction temp.
(Design temp.)
Max. Capacity (kBtu/h)
Coil on Air temp.
Evaporating temp.
Subcool
Air Suction temp.
(Design temp.)
Number of Circuits
5/16"
3/8"
Min
Max
Min
6
8
4
8
12
6
10
14
8
16
22
12
16
24
12
18
24
14
20
26
16
24
32
18
30
40
22
34
46
26
40
54
30
4.5
5
6
656
689
848
530
577
706
742
806
989
79
85
105
161
174
215
Ø1/2", Ø3/8", Ø5/16" (Recommended Ø3/8" or less)
54
60
72
50 - 90°F WB (66 - 115°F DB)**
61
67
81
– 31 –
1/2"
Max
Min
Max
6
3
4
10
4
6
12
5
7
16
8
10
18
8
10
18
8
10
20
10
12
28
12
14
34
14
18
36
16
20
38
18
22
8
10
12
1059
1254
1695
865
1042
1413
1236
1483
1978
131
157
210
268
322
429
96
120
144
44°F
10.8°F
91°F DB / 82°F WB
108
134
162
14 - 59°F DB
126°F
7.2°F
32°F DB
14
16
1907
2119
1572
1730
2225
2472
236
262
483
537
168
192
189
215.04
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