Strebel S-FX 125, Installation Operating & Maintenance Manual

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A few examples of flue gas material suitable for the S-FX boilers:
CE String for Plastic PPs: EN14471 T120 P1 W 2 O(30) I C/E L
CE String for Stainless Steel: EN1856-1 T250 P1 W V2-L50040 O (50)
When selecting flue gas systems, be aware that the minimum requirements are met. So only select flue gas
materials having the same or better properties than this table.
Never use aluminium flue with the S-FX boilers
8.2 S-FX Exhaust Flue Connection
Manifold, ducts and flues must be suitably sized, designed and
made in compliance with the current regulations They must be made
of suitable materials, i.e. resistant to heat and corrosion, smooth on
the inside and tight.
In particular, the internal flue gaskets must be condensate proof.
Before proceeding with the flue installation, check and carefully
comply with the local regulations and provisions.
Every unit has two flue connections in order to offer greater flexibility for installation. Only use one of
the outlets and make sure the other connection is properly plugged up.
Description
S-FX Boiler Range
70 125 220 320
Flue Spigot Diameter 80 100 160 200 mm