Clean and cement using procedures explained in the furnace.
What is a concentric vent pipe.
Determine the best location for the intake vent.
Concentric vent wye exhaust pipe intake pipe rain cap stainless bolt and locknut concentric vent kit installation considerations 1.
Determine the best location for the concentric vent.
Concentric wall venting when venting an appliance through the wall using innoflue concentric the following parts are most commonly required.
Refer to figures 1 4 for installation clearances in different installation.
Concentric 2 4 3 5 and 4 6 sizes correspond to single wall 2 3 and 4 diameters.
These vents simplify installation and only require one hole through the wall or roof where the pipes terminate.
Do not install multiple concentric vents directly above one another unless separated by a 3 distance minimum.
When installing multiple concentric vents refer to the following guidelines.
Takagi s9007611005 takagi s9007611005 3 inch pvc concentric termination for the t h3 dv tankless water heater from the t vent collection 3 9 out of 5 stars 5 79 67 79.
Cut a 4 diameter hole for 1ct0302 2 kit or a 5 hole for 1ct0303 3 kit.
Partially assemble concentric vent termination kit.
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Determine correct concentric vent termination accessory for the pipe diameter selected.
Determine correct concentric vent size for the pipe diameter selected.
Walk through for concentric vent pipe kits.
A concentric vent termination may be used on a power direct vent tank or tankless water heater to get the same benefit of a single wall or roof penetration with an aesthetic vent termination.
In that installation separate intake and exhaust vent pipes are run between the water heater and interior wall and only the wall penetration and.
A concentric vent runs both intake and exhaust thru a double wall pipe to the outside of the home either thru the roof or sidewall.
Leaving the intake inside the roof in attic as john ask can lead to problems.
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This is an alternative to the standard two pipe intake vent shown in the basic furnace installation instructions.
Concentric vents make it easier to have a two pipe installation for high efficiency furnaces.