Hitecsa ADISA ADI CD 105, Техническое руководство по установке, использованию и обслуживанию

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ADI CD Boiler – Technical Manual
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17.6 Chimneys
The flue outlet, according to the current rules, must ensure a correct evacuation of the burnt gases, without
backward flows and without producing condensate. The natural draught of the chimney must evacuate the burnt
gases from the boiler flue outlet.
17.6.1 Chimney sizing
The internal diameter depends on:
- Heat input of the boilers, type, number of boilers installed and water working temperatures.
- Type of gas.
- Chimney: vertical height, horizontal length (minimum slope: 3 to 5%).
- Number of elbows and their angles (they should be reduced to the minimum).
- The chimney material and if it is insulated or not.
If several boilers are connected to the same chimney, it is important to consider the distance between them and
the dimensions of the flue header.
The base of the vertical chimney must include a drainage pipe to evacuate the condensate.
With regard to boilers, these are the data to be considered for calculation:
-
Values of CO2, for Natural Gas: it is recommended to adjust at 8,1% of CO2, for all the boilers
Models Range CO2 (%) for Natural Gas
ADI CD 105 to 200
7.3 - 9.1%
ADI CD 250 to 325
7.3 - 8.5%
ADI CD 400 to 750
7.3 - 8.8%
ADI CD 850 to 950
7.6 - 8.6%
- Flues temperature:
Flues temp.
MAXIMUM POWER MINIMUM POWER
Average Water temperature
 High ( 70ºC) Low ( 40ºC)
High ( 70ºC) Low ( 40ºC)
Flues Temp. 70 - 80ºC 50 - 60ºC 60-70ºC 40ºC
- Residual pressure at the flues output of the boiler:
Model
ADI CD
Ø flue outlet of the
boiler; External
diam. (mm)
MAXIMUM POWER MINIMUM POWER (*)
Power Input
kW
Residual Pressure
(Pa)
Power Input
kW
Residual Pressure
(Pa)
70
150 72,7 21 21,8 2,5
85
150 87,7
18,9
26,3
7,5
105
150 107
45
32
40
120
150 123 32,4 37 5
175
150 166
27
49,8
10
200
180 202,2
30
60,7
7,5
250
180 246,5 40,5 74 8,5
325
250 300,5
45
90,2
20
375
250 361,2
32,4
108,4
7,5
450
250 448 45 134 22
550
350 546
36
163,9 (*)
10
650
350 618
37,5
185,4 (*)
10
750
350 700
39
210 (*)
7,5
850
350 818,5
88,8
327,4
13
950
350 924,5
133,1
369,8
19
(*) Minimum Power adjustable up to 30% of gas power, to be adjusted in factory (at the commissioning) in function of installation factors, may be great value.