Pl Calculation Of The Flue Pipe Length - ACV WaterMaster 25 Installation, Operation And Maintenance Instructions For The Installer And The User

TECHNICAL CHARACTERISTICS
CALCULATION OF THE FLUE PIPE LENGTH
When connecting the flue pipes, make sure not to exceed the maximum flue pipe length, recommended for the product, otherwise the system pressure might decrease.
The flue pipe pipe length can be calculated using the method shown below. Please refer to the tables below indicating the values in meters, applied to each of the connection components. Then compare the calculation result
to the recommended maximum flue pipe length indicated in the table on previous page.
(corresponding length in meters of straight pipe)
WM 25 - 35 - 45
Concentric flue pipe Parallel flue pipe
Ø 80/125 mm
1 m straight pipe 1 m
90° elbow
2 m
45° elbow
1 m
The equivalent length for pipes equipped with a measuring unit is equal to a 1 meter
straight pipe
Example of verification of the flue pipe length (L) in a concentric flue pipe system for
WaterMaster 35 (80/125):
The method is explained through an example.
Figure 1 : The assembly is comprised of:
1 pipe with a measurement unit + 3 90° elbows + 6 meters of straight pipes + 2
x
• Method :
a) Using the above table, calculate the length in meters of the whole flue pipe assembly:
1 + (3 x 2) + (6 x 1) + (2 x 1) = 15 m
b) Compare the resulting value with the maximum length (39 m). This flue pipe length is within the
recommended range.
Flue pipe length (L)
WM 25 - 35 - 45 - 70 - 85 - 120
Concentric flue pipe Parallel flue pipe
Ø 80 mm Ø 100/150 mm Ø 100 mm
1 m 1 m 1 m
2.3 m 2.2 m 3.7 m
1 m 1.3 m 2.3 m
45° elbows
x
WaterMaster 25 - 35 - 45 - 70 - 85 - 120 : A1006482 - 664Y7300 • D
L
L
C C
33
33
L
C
13
Concentric connection
L
C
33
Parallel connection
Fig. 1
L
2000 mm
EN
FR
NL
ES
L
IT
C
33
DE
C PL
13
RU
en
21