Help, replacement furnace?

[knjobrien5]

My new NT-30 showed up last night. I'll let ya all know how install goes this weekend. As always, thanks everyone for your help and information.

[John Oliver]

Has anyone had experience with replacing the blower fan/motor on NT30S model Suburban furnace. Furnace works well - heats great - and is generally in good shape. Occasionally blower fan/motor makes noise like a "squirrel cage" fan that is unbalanced.

I cannot find "blown up" schematics which shows blower motor. Can it be replaced without removing furnace?

Any help, thoughts, ideas would be appreciated......

[TomW]

I am 95% sure the furnace will have to come out for the repair. But locate a replacement motor first - If one can be found it will probably be quite expensive.

Tom

[nickclifford]

Hi all, glad i found this thread ...
replacing original furnace and was assuming i'd go with Suburban again. Seems like the NT30 is the way to go. Vintage Trailer supply says in 23" deep. the under counter space in my Sovereign appears 22.5" ...seems super tight, but assuming this works given most seem to say an easy direct swap ...

thanks

[nickclifford]

Originally Posted by nickclifford

Hi all, glad i found this thread ...
replacing original furnace and was assuming i'd go with Suburban again. Seems like the NT30 is the way to go. Vintage Trailer supply says in 23" deep. the under counter space in my Sovereign appears 22.5" ...seems super tight, but assuming this works given most seem to say an easy direct swap ...

thanks

One other thing .... would a 25kBTU be a disaster in a 30' trailer? I'm not camping in Alaska, so wondering what is really needed ... we get to about zero here in Nor Cal Santa Cruz mtns ... thanks

[NikkiCole]

Mark --
thanks for the post about NT30 replacement. I'm in process of purchasing a new NT30sp to replace original 1978 Sovereign version. with your new installation, did you encounter any issues on lining up the side ducts? husband is concerned about ordering after view pics and comparing with original as spacing seems different. thanks for any info you may provide.
-- Nikki

[nickclifford]

Originally Posted by NikkiCole

Mark --
thanks for the post about NT30 replacement. I'm in process of purchasing a new NT30sp to replace original 1978 Sovereign version. with your new installation, did you encounter any issues on lining up the side ducts? husband is concerned about ordering after view pics and comparing with original as spacing seems different. thanks for any info you may provide.
-- Nikki

Nothing lined up, but after lots of head-scratching, worked it out. I had to build a platform to sit the furnace on so it would line up with the existing outside vent. Used 2 flexible heat ducts.. one to the front/living area, the other I ducted into the existing rectangular metal vent duct that runs back to the bathroom.make sense ? kinda difficult to explain ... pm me if you need more advice. Good luck !

[Can of beans]

In my 72 the original nt-30 sat on a bottom exit duct adapter, I had read on another post here to keep that part, and it lines up much the same.
I think I have a 3/4" wood spacer on that box, then it all lines up on the outside and fits the same to my original ductwork and outside venting.