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■Dx-Coil design guideline
•AHU / DX-Coil Notes & Features:-
Cooling & Heating output figures are based on calculations and 'general' test data. All figures are to be taken as
approximations. The properties of the 3
The DX Coil must be suitable for R410A.
The design should allow operation as both an Evaporator and a Condenser
(Features: Multiple circuits / Liquid Capillary Distributor / Gas Header)
The counter flow principle must be observed for the DX coil design
A Drain Pan must be fitted (even if only used in Heat mode) due to defrost cycles
It is recommended to fit droplet eliminator plates in the discharge air stream if used
in cooling mode.
• Dx-coil design guideline
Be sure to refer to the guideline for 3
Capacity code
Tonnage
Cooling Capacity
Standard
Air volume
Min.
(cfm)
Max.
Standard
Coil internal
volume
Min.
3
(inch
)
Max.
5/16"
Number
of circuits
3/8"
by U-Pipe
diameter
1/2 "
Distributor Orifice
size (ID inch)
Design evaporating
temperature
Suction Superheat
Evaporator air suction
temp.
Design condensing
temperature
Sub cooling
Condenser air suction
temp.
Diversity
(*1)
Cooling "Air ON" temp.
(*1)
Heating "Air ON" temp.
rd
Party DX-Coil will have an effect on the performance of the Outdoor units.
rd
party Coil and AHU design to ensure the operation.
012
015
1
1.25
12
15.4
350
450
280
360
420
540
40
50
34
43
46
58
Min.
2
3
Max.
3
4
Min.
2
2
Max.
2
3
Min.
2
2
Max.
2
2
Min.
0.10
0.10
Max.
0.12
0.12
018
021
024
1.5
1.75
2
18
21
24
550
650
800
440
520
640
660
780
960
1,020
60
70
80
51
60
68
69
81
92
3
3
3
4
4
4
2
2
2
3
3
3
2
2
2
2
2
2
0.12
0.12
0.14
0.16
0.14
0.14
0.16
0.18
80°F (DB) / 67°F (WB)
70°F (DB)
60 to 110%
59°F to 75°F (WB)
59°F to 83°F (DB)
7
030
036
042
048
2.5
3
3.5
30
36
42
48
850
950
1,150
1,250
680
760
920
1,000
1,140
1,380
1,500
100
120
140
150
85
102
119
128
115
138
161
173
4
5
6
6
8
8
3
3
4
4
5
6
2
2
3
2
3
3
0.17
0.20
0.20
0.20
0.24
0.24
44°F
8°F
126°F
12°F
060
072
096
4
5
6
8
60
72
96
1,650
2,150
2,500
1,320
1,720
2,000
1,980
2,580
3,000
200
250
310
170
213
264
230
288
357
6
6
8
10
8
8
12
14
4
4
6
8
6
6
10
12
3
3
4
5
3
4
6
6
0.21
0.25
0.27
0.24
0.28
0.32
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