Double wall chimney system DW25

Double wall chimney system DW25

Double wall chimney system is designed to exhaust combustion products from heating appliances by natural draught and can be installed inside or outside the house.

Chimney system for particular cases must be selected according to the documentation of the heating appliance manufacturer, chimney installation guide and national legal acts.

Fuel Oil, gas, solid fuels
Working temperature ≤ 200 °C
≤ 450 °C
≤ 600 °C

Inner pipe: stainless steel EN 1.4404
Outer pipe: stainless steel EN 1.4301 or painted steel

Wall thickness When dn from 80 to 200 mm – 0,5, 0,6, 0,8, 1,0 mm
When dn from 230 to 550 mm – 0,6, 0,8, 1,0 mm
Pressure class N1 – natural draught
P1 - positive pressure (with gaskets)
Insulation Injected mineral wool, thickness – 25 mm
Sootfire resistance G – resistant
O – not resistant (with gaskets)
Distance to combustible materials ≥ 1001 mm (designation 1)
≥ 501 mm (designation 1a)
≥ 1001 mm (designation 2)
≥ 501 mm (designation 3)
Condensate resistance W – designed for wet operating conditions
Certificate 1397-CPR-0557
Designation code EN 1856-1 T600-N1-W-Vm-L50XXX-G100 (1)
EN 1856-1 T600-N1-W-Vm-L50XXX-G50 (1a)
EN 1856-1 T450-N1-W-Vm-L50XXX-G100 (2)
EN 1856-1 T200-P1-W-Vm-L50XXX-O50 (3)
1 The minimum distance to combustible materials from the outer pipe of a chimney must be selected according to the technical specifications of the chimney, as described in their marking and national legal acts. If the legal acts and chimney technical specifications indicate different admissible distances of the combustible materials, it is necessary to select the higher distance. The minimal distance to combustible materials were determined using 200 mm diameter chimneys. The distance to combustible materials for chimneys larger than tested must be increased by a factor. For d201-300 mm the factor must be 1 time the distance to combustible material determined for d200 mm, for d301-450 mm - 1,5, d451-600 mm - 2, above d601 mm - 4.

Catalogue Download PDF
Instructions Download PDF
Declaration of performance Download PDF
Certificate Download PDF

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