IDEAL Evomax 30, Manual

Page: 8 / 16

EVOMAX - MULTILINE FLUE KITS
8
FLUE DESIGN
FIGURE 3.5
(COMBUSTION PRODUCTS FLOW RATE)
FIGURE 3.6
(EVOMAX CASCADE FLUE SYSTEM DATA)
System
System
Models
System Capacities Combustion Products Data Flue Data
Total Min
Turn
Down
Ratio
Flow Rate
Qmax
Header
Pressure
Pmax
Pressure Losses
Max
length
Htot Hmin Mass
Vol
@
50C
(a)
static
(b)
1m
(c)
90°
(d)
guard
L
kW kW Kg/hr m3/hr Pa Pa Pa Pa m
Ex 1
(4x80) +
(1x30)
350 7.5 40:1 550 525 40
Ex 2 3 x 120 360 30 12:1 560 550 80
0 50 100 150 200 250 300 350 400 450 500 550 600 650
0
100
200
300
400
500
600
700
800
900
1000
1100
Mass Flow Rate [kg/hr/
Volume Flow Rate @ mean flue temp 50C [cu m/hr]
Cascade Total System Capacity - Htot [kW]
Cascade Flow Rate - Qmax
Cascade Total System Capacity - Htot [kW]
Cascade Flow Rate - Qmax
Example 1
This example requires a total output of 350kW and comprises
(4 x 80) + (1 x 30) models; the inclusion of the 30kW model
enables the greatest turn-down (40:1) but the maximum
permissible header pressure is limited to 40Pa.
Example 2
The heat requirement here is also 350kW; by selecting 3 x
120kW models (360kW) the maximum permissible header
pressure is raised to 80Pa which will enable greater flue
length. The turn-down ratio will be reduced to 12:1.