application

gas concrete ductwork with a fire resistance period of 90 minutes for exhaust pipe systems for liquid fuel and gas in negative and positive pressure operation mode

 

combustible

oil, gas

 

furnace class

F 90 / F 30

 

working temperature

≤ 200 °C / ≤ 400 °C

 

material

gas concrete duct element, inner tube of stainless steel 1.4571 / 1.4404  or synthetics (PP)

 

admissible for pos. pressure

no

 

free-standing extension

up to 3 m

 

approval number

- test certificate ductwork -

 

design

interior pipe eg. al-bi, fu or kl