Texas Gas Furnace Install

[SandShark]

I thought this job came out pretty nice and clean. It helps to have a decent sized attic to work in, especially when you're old and decrepit like I am. ;-)

http://ww2.imagewiz.net/images/hvac1/172883_CRW_5415.jpg
http://ww2.imagewiz.net/images/hvac1/172884_CRW_5414.jpg

[Timber]

Galvanized gas pipe?

Looked in my UMC code book, it is legal.

Looks good, who did the metal?

[Edited by Timber on 12-22-2004 at 05:15 PM]

[SandShark]

After I saw your first post, I was just about to say if galvanized pipe is illegal, then every contractor I know is in violation and the city inspector doesn't know the codes because the install passed with no problems.

As to the sheet metal, we use a locally owned Mom-and-Pop shop to do our metal. They do a fantastic job and the price is right.

[slick rick]

Nice install duct looks good. :eek: Didn't see a elect disconnect on the furnace and drip leg on the gas. Just curious why so much square duct on the return why not use round pipe? Not knocking the work just curious here in SC we do it differently. Keep up the good work Its hard to find people who care about thier work.

[SandShark]

Thanks for the kind feedback. Yes, you're right, there's not a drip leg. I probably should have installed one coming out of the furnace. The funace we took out didn't have one, either.

The power to the furnace is supplied by the cord you see coming out of the top and goes to an original 115V receptacle mounted on the roof framing above the furnace. The return can sits over the same sized closed in sheetrocked chase down to the living space where the return air filter is installed in the wall. That's just the way we do a majority of our jobs, but normally we wouldn't have to offset it like that. We had to in this case so it would miss the verticle 2X4 roof support you see in the first image.

[mark beiser]

It looks good, but having the service end of the coil in back against the roof line just taints the whole install in my eyes. Trane/AS slab coils are not airflow direction specific, so why not install it with all the service on the same side as the furnace? Your ears will be tingling for a long time to come every time a fat service tech like me as to crawl back there to service the drains and whatnot. :(

[Edited by mark beiser on 12-22-2004 at 11:16 PM]

[amickracing]

I don't mean to be rude, but you installed the thing sideways! lol

Very nice work, thanks for sharing.

[SandShark]

It looks good, but having the service end of the coil in back against the roof line just taints the whole install in my eyes. Trane/AS slab coils are not airflow direction specific, so why not install it with all the service on the same side as the furnace? Your ears will be tingling for a long time to come every time a fat service tech like me as to crawl back there to service the drains and whatnot. I'm the service technician that will be crawling back there to service the drain and whatnot and there's more room than these images show. The area is completely decked allowing easy access with no problems whatsoever. I chose to install it that way for several reasons. One, the lineset was already on that side and two, the existing plumbing for the condensate drain is on that side. My primary concern when installing a system, besides the ability to service it, is the condensate drain, especially when it's in an attic. The shorter the run and the less fittings, the less likelihood it's going to clog and overflow. In this instance, the drain would have had to be run back under the transition or plenum, adding more piping and fittings. The drain I installed is no less than a two foot run with one elbow and a cleanout. I've installed hundreds of systems in the 23 years I've been in this trade and have yet to have my ears tingle because a fat service tech couldn't service one of my systems. In fact, I'd estimate that of these hundreds of installations, I'm the one servicing a vast majority of them. In our two-man company, I'm the service technician, installer, salesman, customer relations person rolled into one.

[Jultzya]

Nice install.

Question: Why didn't you use an AS cased horz. coil?
(just wondering)

And the gas valve, are you tring to derate the furnace with the ball valve closed a little? :D