Rinnai KB Série Manuel D'installation Et D'utilisation page 12

Installation of PVC/CPVC Vent and Intake Air Piping:
Adaptor Installation Configurations:
Note the correct position of combustion air inlet and gas flue outlet, as these are NOT interchangeable. For the
correct position and design of the twin pipe gas flue outlet and combustion air inlet refer to the installation
instructions supplied with the appliance.
The adaptor as supplied requires no additional parts to be used with standard 3" 3rd party solid core PVC/
CPVC pipes; refer to figure below for required parts for 3" PVC/CPVC assembly configuration.
Conversely, the concentric to twin pipe adaptor require 2 additional (4"x 3" Flush – Schedule 40 PVC) bushing
to be used with 4" PVC/CPVC assembly configuration (refer to figure below).
Failure to correctly assemble the components according to these instructions may result in property damage,
serious injury, or death.
Required Parts For 3" PVC/CPVC Assembly Configuration
Required Parts For 4" PVC/CPVC Assembly Configuration
WARNING
KB Series Manual 25