The Rinnai 224080PP Concentric Venting Condensing Vent Pipe Extension is an additional component of a Concentric Venting accessory. A Concentric Venting accessory is frequently used to turn a two-vent system into a single exiting vent. It also slightly warms the air before it reaches the heating part of your Rinnai Tankless Water Heater. This accessory is specifically design for Rinnai's Condensing Tankless Water Heaters.
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WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm..
Product QuestionsAnswered by Bob, the Heating Product Expert
What are the inner and outer pipe diameters? Is the inner pipe made of metal?
Larry
from California
March 10, 2016
Answer
I can't seem to find any listed specifications from the manufacturer but we did have some in stock that I was able to go back and physically measure for you. It looks like the inner pipe has a diameter of 75 mm and the outer pipe is 120 mm. Also, the inner pipe is not made of metal; Both pipes are plastic.
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