Rinnai ENERGYSAVER EX08C Installation Fundamentals page 67

Vent Extension Installation Guidelines
PROPER VENTING INSTALLTION GUIDELINES
Example: Using 2 sets of extensions
and 1 standard bent elbow
CAUTION
VERTICAL RISE
OF EXTENSION
FROM TOP OF THE
FURNACE TO THE
TERMINATION OR
ELBOW CANNOT
EXCEED 10 FEET
ON THE 17 OR 22
MODELS!
(Other models may
vary, see Owner's /
Installation Manual)
Use the pipe stoppers, connectors, clamps, and screws according to each extension
set and model's installation instructions to ensure no leakage of exhaust gases!
Example: Using the 80" extension set
67