Lochinvar EcoForce EF80 Installation, Commissioning, User And Maintenance Instructions page 35

Item
Straight tube (per metre)
Straight tube (per metre)
Straight tube (per metre)
45° Elbow
45° Elbow
45° Elbow
90° Elbow
90° Elbow
90° Elbow
Vertical inlet cap
Vertical inlet cap
Vertical inlet cap
8.8.3 Air inlet component resistances (pa)
Item
Straight tube (per metre)
Straight tube (per metre)
Straight tube (per metre)
45° Elbow
45° Elbow
45° Elbow
90° Elbow
90° Elbow
90° Elbow
Vertical exhaust cap
Vertical exhaust cap
Vertical exhaust cap
8.8.4 Exhaust component resistances (pa)
8.8.5 Worked example – conventional flue
Size (mm)
EF 58
80 4.0
100 1.2
130 0.4
80 2.0
100 0.6
130 0.2
80 4.0
100 1.2
130 0.3
80 10.4
100 4.2
130 1.5
Size (mm)
EF 58
80 5.0
100 2.0
130 0.5
80 2.5
100 1.0
130 0.2
80 5.0
100 2.0
130 0.4
80 13.8
100 5.6
130 2.0
Flue Resistance Calculation Example
EXAMPLE EF100 WATER HEATER WITH VERTICAL CONCENTRIC TERMINAL
11000mm VERTICAL FLUE LENGTH
2000mm HORIZONTAL FLUE LENGTH
2X 90° BEND
2X 45° BEND
AIR SUPPLY FROM PLANT ROOM
Resistance (Pa)
EF80 EF100
7.5 X
3.0 3.5
0.7 0.8
3.5 X
1.5 1.7
0.4 0.4
7.0 X
3.0 3.5
0.7 0.8
18.1 X
7.4 11.4
2.6 4.0
Resistance (Pa)
EF80 EF100
8.0 X
3.5 4.0
0.8 1.2
4 X
1.7 2
0.4 1.6
8.0 X
3.5 4.0
0.8 1.2
24.0 X
9.8 15.2
3.5 5.3
EF120 EF150
X n/a
4.0 n/a
1.1 n/a
X n/a
2.0 n/a
0.5 n/a
X n/a
4.0 n/a
1.1 n/a
X n/a
16.7 n/a
5.8 n/a
EF120 EF150
X n/a
6.5 n/a
1.8 n/a
X n/a
3.2 n/a
0.8 n/a
X n/a
6.5 n/a
1.8 n/a
X n/a
22.1 n/a
7.8 n/a
EF180
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
EF180
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
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