IDEAL Evomax 30 Manual page 7

FIGURE 3.2
(FLUE SYSTEM LAYOUT)
3.3 EVOMAX CASCADE FLUE SYSTEM DATA
Evomax
Cascade System Limits
Model Output
Maximum
Model System
Capacity
Max Min Hmax
kW kW kW
30 7.5
40 10
400
60 15
80 20
100 25
120 30 600
150 37.5
30P 7.5
40P 10
400
60P 15
80P 20
EVOMAX - MULTILINE FLUE KITS
'A'
Combustion Products
Data
Maximum
Permissible
max min
Header Temperature
rate rate
Pressure
CO CO
2 2
'A'
(Static)
Pmax ± 0.5 ± 0.5
Pa % %
40
9.7 9.0
80
40 11.4 10.6
FLUE DESIGN
Customer specified components
3.4 DESIGN PROCEDURE
1. Determine the required total heat output. (Htot) [maximum
of 6 boilers per system].
2. Determine the required minimum heat output.
3. From Table 3.3 select the Evomax models required.
Max
4. Using Figure 3.5 read the Combustion Products Flow Rate
(Qmax) at the Total System Capacity (Htot).
5. Record the information in Table 3.6
C
6. Calculate the maximum permissible flue length at
conditions Qmax & Pmax.
L = [a – (c + d)] / b (Table 3.6)
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'A'
At the maximum system
capacity the static pressure
generated against the flue
resistance at position [A]
must not exceed the value
Pmax quoted in Table 3.3.
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