Installers and specifiers know a gas appliance is only as good as the venting system it’s connected to. Poor venting can cause improper combustion, but, more importantly, can also lead to flue gas leakage into heated spaces — a problem with deadly consequences.
New Ultra Series Models Provide Maximum Venting Flexibility
October 17, 2014
Rinnai has introduced a tankless water heater that allows for concentric or twin-pipe PVC venting from the same unit. The new Ultra Series condensing tankless water heater models RUC98i and RUC80i feature a built-in system that allows maximum flexibility for installers and dealers.
The Canadian Commission on Building and Fire Codes (CCBFC) recently invited stakeholders to comment on proposed changes to the 2010 National Building Code (NBC). Even though the review period has concluded, industry members may wish to note proposed changes include a requirement for venting that outlines minimum separation distances to vent products of combustion.
Chlorinated polyvinyl chloride (CPVC) first made its way into the world of venting systems in the residential market. Recently, CPVC has been used to vent Category IV high-efficiency boilers. While it can cost up to 20 percent less than stainless steel, those specifying venting systems should consider other differences that may impact boiler efficiency and present potential safety hazards.