HVAC Plumbing

[John Harrison]

Can anyone tell me why these lines have this section installed in it.





These are the Fresh air and exhaust lines to the furnace.

[KEVIN WOOD]

To muffle the sound of most lennox pulse furnaces.

[David A. Andersen]

Yup.

[John Harrison]

So no problem with the installation then??

Thanks guys.

[KEVIN WOOD]

Correct

[Robert J. OConnor]

If thats the venting for a Lennox G14 or GSR14 series pulse furnace, there have been a history of problems with cracked heat exchangers. Those need evaluation by a specialist.

http://www.inspectapedia.com/heat/lennox1.htm

.

[John Harrison]

Originally Posted by roconnor

If thats the venting for a Lennox G14 or GSR14 series pulse furnace, there have been a history of problems with cracked heat exchangers. Those need evaluation by a specialist.

http://www.inspectapedia.com/heat/lennox1.htm

.

I was unable to verify the date aside from a sharpie marking dating for March of 1983.
Due to a low output of heat from the registers. A temp diff of 6 degrees on both heat and cool cycles, and an unknown last service date.

I recommended a full system evaluation by a licensed HVAC tech before further pursuit of purchase.

[David A. Andersen]

You can get a 6° temperature difference just because the duct passes through the attic or crawlspace.

I don't think anything was working.

[Michael Larson]

Originally Posted by jharrison

I was unable to verify the date aside from a sharpie marking dating for March of 1983.
Due to a low output of heat from the registers. A temp diff of 6 degrees on both heat and cool cycles, and an unknown last service date.

I recommended a full system evaluation by a licensed HVAC tech before further pursuit of purchase.

Lennox Industries Inc., the maker of Lennox Pulse furnaces, announced it has set up a free program to inspect Lennox furnaces installed from 1982 to 1989 to check for carbon monoxide leaks or as the company stated: "because of "increased instances of corrosion in some Pulse furnace heat exchangers in units installed before 1990."

Please inform your client as these can be a very real safety hazard.

More info:

http://www.inspectapedia.com/heat/lennox1.htm