Strebel S-CB Px 120, Руководство по установке, эксплуатации и техническому обслуживанию

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S-CB Px 120 Manual 27
8.4. Pipe heights on a flat roof
Height A
This is the height of the air inlet. A rain hood should prevent rainwa-
ter entering the air supply system.
When the inlet and outlet are mounted on a flat roof, the inlet should be at
least 60 cm above the roof surface and at least 30 cm above the maxi-
mum snow level.
Example 1:
When the maximum snow level on the roof surface is 45 cm then the air
inlet should be at 45+30=75 cm. 75 cm is more than the minimum 60 so
the height will be 75 cm.
Example 2:
When the maximum snow level on the roof surface is 15 cm then the air
inlet should be at 15+30=45 cm. 45 cm is less than the minimum 60 cm
so the height will be 60 cm.
Height difference B
This is the distance between the flue outlet and the air inlet.
The flue gas outlet should be at least 70 cm above the air inlet. It is ad-
vised to be equipped with a conical outlet.
When no air inlet connection is applied on the roof, the flue outlet
should be situated at least 100 cm above the roof surface.
Distance C
The horizontal distance between the flue gas discharge pipe and air
inlet pipe at roof level.
This distance should be at least 70 cm.
8.5. B23P certified
Overpressure flue gas systems
For boiler classification B23P and for overpressure flue gas systems the minimum requirements of the flue gas
material for Eco Boilers can be determined in a designation string according to the EN1443 (see table).
CE string flue gas materi-
al (B23P) European
standard Tem-
perature
class Pres-
sure
class Resistance
to conden-
sate Corrosion re-
sistance class
min. requirement PP EN 14471 T120 P1 W 1
min. requirement StS EN 1856-1 T120 P1 W 1
Metal: liner
specifi-cations Soot fire resis-
tance class Distance to
combus-tible
material Plastics: loca-
tion Plastics: fire
beha-viour Plastics: en-
clo-sure
O 30 I or E C/E L
L20040 O 40
A few examples of flue gas material suitable for Strebel boilers:
CE String for Plastic PP: EN14471 T120 P1 W 2 O(30) I C/E L
CE String for Stainless Steel: EN1856-1 T250 P1 W V2-L50040 )(50)
Be aware by selecting flue gas systems that the minimum requirements are met. So select only flue gas materials
that have the same or better properties than this table.