Tjernlund Products’ new chimney stack assist kit (Model CSA1) allows water heaters to be vented through existing connectors and oversized chimneys.
Tjernlund Products’ new chimney stack assist kit (Model CSA1) allows water heaters to be vented through existing connectors and oversized chimneys. Previously, upgrading to a condensing direct-vent furnace often required installation of a chimney liner for the orphaned water heater. The CSA1 Kit features the use of a mechanical-assist fan to protect against condensation callbacks and flue gas spillage. Installing the kit is a one-person job and doesn’t require an electrician. The kit includes a draft hood linear limit safety to lock out the water heater in case of sustained flue gas spillage. The kit contains all components for the installation.