DescriptionFor NAVIEN floor and wall-mounted gas boilers, an additional installation of the coaxial Knee type is effective to use such chimneys. The chimney is coaxial Elbow "G" NAVIEN because the air to maintain the combustion process will enter the boiler already warmed up by 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
