Viessmann Vitodens 100-W WB1A-24, Руководство по установке

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Vertical Vent Installation (Coaxial)
32
Vent Length Requirements
(continued)
Equivalent vent calculation examples
Table 18.
Type of fitting Equivalent
length
87º elbow/
87º inspection tee 1.6 ft./0.5 m
45º elbow 1 ft./0.3 m
Always include vent termination length
in calculations.
Equivalent vent length calculation
example 1
Vitodens 200-W, WB2 15-60 (Fig. 28)
(vent system 100/150)
2 x 45º elbow 2 ft./0.6 m
. . . . . . . . . . . . . . . . . . . . . . . . . . .
1 x vent pipe (0.5 m) 1.6 ft./0.5 m
. . . . . . . .
1 x vent pipe (1 m) 3.3 ft./1 m
. . . . . . . . . . . . . . . .
1 x vent termination 3.9 ft./1.2 m
. . . . . . . . . .
Total equivalent length 10.8 ft./3.3 m
Equivalent vent length calculation
example 2
Vitodens 100-W, WB1A 8-30 (Fig. 29)
(vent system 60/100)
Vitodens 200-W, WB2 8-32
(vent system 80/125)
2 x 87º elbow 3.3 ft./1 m
. . . . . . . . . . . . . . . . . . . . . . . . . . .
2 x 45º elbow 2 ft./0.6 m
. . . . . . . . . . . . . . . . . . . . . . . . . . .
3 x vent pipe (0.5 m) 4.8 ft./1.5 m
. . . . . . . .
1 x vent pipe (1 m) 3.3 ft./1 m
. . . . . . . . . . . . . . . .
1 x sliding coupling 0.8 ft./0.25 m
. . . . . . . . .
1 x vent termination 3.9 ft./1.2 m
. . . . . . . . . .
Total equivalent length 18.1 ft./5.55 m
5
2
8
5
2
6
8
v
3
.8
Fig. 28
Equivalent vent length calculation, example 1
IMPORTANT
Fig. 29
Equivalent vent length calculation, example 2