90+ Venting to 150 Feet?


What would you say if I told you we can now vent ALL  of our 90+ furnace up to 150 equivalent feet?  You would either think I’m nuts or you would stand up and cheer (or possibly both).  Well it is true.  We are now approved to vent ALL of our furnaces in either 2 inch PVC, 3 inch PVC, and NOW 4 inch PVC vent pipe.  That gives you 150 equivalent feet of vent and 150 equivalent feet of intake (for 2 pipe systems).

Attached below is the new vent table showing the use of 4 inch pipe.  This, along with the ability to vent DOWN (from a previous blog posting — also attached), now provides you with some very nice options for installing 90+ furnaces.  Keep in mind that to achieve the maximum lengths, long sweep elbows need to be used.  I have included the equivalent feet chart for fittings on the extended vent table attachment.

With these changes, we hope this helps you land more jobs with the high efficiency equipment.

90+ Extended Venting tables

90+ furnace downward venting

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About yorkcentraltechtalk

I have been in the HVAC industry most of my life. I worked 25 years for contractors on anything from residential to large commercial boilers and power burners. For the past 23+ years I had been employed by York International UPG Division ( a division of Johnson Controls) as a Technical support/Service Manager but I am now retired. One of my goals has always been to "educate" dealers and contractors. The reason for starting this blog was to share some knowledge, thoughts, ideas, etc with anyone who takes the time to read it. The contents of this blog are my own opinions, thoughts, experiences and should not be construed as those of Johnson Controls York UPG in any way. I hope you find this a help. I always welcome comments and suggestions for postings and will do my best to address any thoughts, questions, or topics you may want to hear about. Thanks for taking the time to read my postings! Mike Bishop
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