DescriptionFor NAVIEN wall–mounted gas boilers, coaxial type chimneys are used - European. For floor-mounted gas boilers - single-tube with a diameter of 80 mm and coaxial type 80/100 mm. it is more efficient to use a European coaxial type chimney, refers to boilers NAVIEN because the air to maintain the combustion process will enter the boiler already warmed up by the outgoing gases. When installing such a chimney, additional pipes may be needed for elongation. For more information about the product, please check with the seller by contacting him by phone 99871 200 - 18 - 00more hide
