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Continuing the high level of service expected from the leading manufacturer of flue, chimney and exhaust systems.

SM250

Product Type: Domestic

Pre-fabricated twin wall insulated chimney specifically for use on solid fuel combustion equipment

  • Weatherproof external casing
  • Grade 316 stainless steel liner
  • Waste gases exhausted and condensation of the harmful products of combustion is minimised.
  • Low external surface
SM250 is a high quality pre-fabricated twin-wall stainless steel chimney system for use on domestic solid fuel appliances. Manufactured from a corrosion resistant 316L stainless steel liner, 25mm high density silica based powder insulation and 304 grade stainless steel outer casing to ensure many years of service together with rapid draught production and muli-barbed twist lock jointing system for ease and speed of insulation.

Suitable for applications where the flue gas temperature does not exceed 450’C continuous and 550°C intermittent and the chimney is designed to operate under negative pressure and dry conditions. Available in four sizes ranging from 127mm to 203mm internal diameter. This product is not suitable for condensing and positive pressure applications.

Diameters:
125-200mm
Construction:
Twin wall
Insulation:
Powder insulated (25mm)
Material:
Stainless steel
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Temperature:
450°C continuous/550°C intermittent
Pressure capability:
40Pa
Mode of operation:
Negative/zero pressure only
Approvals:
BS EN 1856-1 T450 N1 D Vm L50040 G(50)
BS 4543 Parts 2 & 3
2 hour fire rating to BS 476: Part 20
Certifcation:
CE, Kitemark
Requirements:
Ventilated support components must be used where flue gases are in excess of 250°C when applied internally through combustible floors.
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  • Gas fire appliances
    Atmospheric/pressure jet commercial boilers
  • Gas fires - radian and inset to BS 7977-1: 2002
  • Gas fires - back boiler to BS 7977-2: 2003
  • Gas fires - decorative to BS EN 509: 2000
  • Gas water heaters, Gas fired warm air heaters/cabinet heaters, Gas stove/cooker
  • 28Sec/35Sec oil appliances
    Pressure jet domestic and commercial heating boilers, water heaters, stoves/cookers
  • Solid/multi fuel
    Heating boilers, Open/closed room heaters/stoves,Cookers, Inglenooks
  • Not suitable for positive pressure and condensing applications/appliances
SM250

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