Pics of my new system

[tucson]

Here they are. Thanks again to everyone who shared their expertise and experience.

:) Sue

[Mr Bill]

Job looks good I guess we never see anything like that in Houston a package unit on a residential roof that's wild. I know there is probably a reason to put it on the roof, but why not come through the gable side of the house with the package unit on a platform and then you don't have to cut into a $3000.00 roof?
I have to ask because I don't understand why ok. :D

[tucson]

Hi Bill,

It's not unusual at all here to put a package unit on the roof. Frequently, there's a swamp cooler up there already which some people keep for the dry months. We had the swamp removed and they ran the supply through the existing hole.

Personally, I would rather have had a split system but our house is old and small and there wasn't a good place for either the indoor or outdoor unit.

In your scenario would the unit sit on the ground with a duct going up to the gable?

Sue

[Mr Bill]

.

In your scenario would the unit sit on the ground with a duct going up to the gable?

Sue

Probably if we put package units on houses it probably would sit on the ground with duct piped into the home.

Sue, most of our installs are split systems with the condenser outside and the air handler is inside either in the attic or in a closet, we may have a few done like that here I have just never seen one, but as I said it looks good for that type of installation.

[BigJon3475]

How much does the white roof save on heat in the attic? This is a recommendation now by "greenies" to save the earth..just curious.

[Mr Bill]

This is a recommendation now by "greenies" to save the earth..just curious.


Save the earth? won't be much to save after all the big bombs go off,
isn't that called saving the earth in vain? :eek:

[BigJon3475]

yeah I'm not a "greenie" but I do like money savings.so I was just curious...why not put the white roof up when its time to replace it.

[marvin]

very common install in the desert so. west & also my preferance.
unit is away from dogs cats & kids & in most cases the inquisitave home owner. less ductwork & can be routed from center of house out for
better distribution. existing evap. cooler duct is not really the best
as it is oversized for more volume but it seems to be acceptable to
most end users. this is the way our house has been for years which reminds me i need to upgrade my ducting this year

[tucson]

Bigjon, I don't know how well the white stuff works, never had the opportunity to compare with and without.

marvin, being familiar with this type of installation, how would you say it came out?

p.s. Almost all of our (crappy) ductwork was replaced.

thanks,

Sue

[marvin]

looks pretty good from here but doesnt look like the condensate was trapped.

[tucson]

marvin, Here's a better picture of the copper pipe. Is that the condensate line?

thanks,

Sue

[marvin]

looks like it is trapped at the bottom of the outlet
getting old & eyes dont pick up the detail as they used too
better go get that eye surgery done so i can see again

[BigJon3475]

yeah....usually has a trap to keep smell from leaving the pip into the system and to prevent any airflow losses....it doesn't have a trap....It should have something on it that looks like underneath your kitchen sink piping with a u or j shape in it. Also there is only one line and since its sopper if you don't have regular service done to it it will eventually clog and could possibly back up into the duct work....Just some info for the future.

LOL.....nevermind I just saw the trap...I got young eyes don't worry...

[marvin]

havent seen a rtu with a secondary drain for about 30 yrs.
the chances of the condensate clogging & backing up to the ductwork
are about as good as las vegas getting honest politicians in office

[BigJon3475]

Okay stand corrected my apologies for misleading...If I did so.

[marvin]

i for one was happy to see the roof elbows used instead of being downshot.
downshot with condensate blockage can be a real disaster.

[subcooled_]

You can run flex gas line into unit? The primary purpose of a p trap is to allow the water to drain if drain is on the negative side of the fan, or so supply air doesn't go onto the roof if on the positive side of the fan. And you do have a p trap.;)

[marvin]

looks to me that the unit is hardpiped to outside of cab.
& gasline connection made on the horizontal nipple.
personally i would have 90 down to a tee & fed into the branch &
had a 6 in. dripleg. nothing wrong either way just the way we were
taught in the dark ages

[BigJon3475]

i for one was happy to see the roof elbows used instead of being downshot.
downshot with condensate blockage can be a real disaster.

I thought they dont get blocked up? Am I missing something...Or was the last reply to me just about backing up into the duct....

[marvin]

they definately will plug up just not as often as a split. when an rtu plugs
chances are the overflo is going to leak on the roof thru the cabinet & soak
the insulation in the cab. the units of today dont have metal drain pans to rust & help to block the cond. line. still blow out the lines on pm calls
to stay in practice

[tucson]

Thanks guys for your help. I'm glad the condensate is ok.

I have a question. It's probably nothing but maybe you can put my mind at ease. See how the bottom edge of the unit goes around the outside of the stand? Is that ok?

The reason I ask is because the unit was hanging above the roof on the crane for a while, and they kept taking measurements. I thought someone said it's too small so I was wondering if the bottom edge of the unit was meant to sit on the inside lip of the stand.

Thanks again,

Sue

[Mr Bill]

. I thought someone said it's too small so I was wondering if the bottom edge of the unit was meant to sit on the inside lip of the stand.

Thanks again,

Sue

I think it's looks fine it would be sitting against the service door bottoms if it sat on the inside lip of the stand covering up your service door access screws, personally the job looks really nice to me.

[techace79]

i dont know but that drain looks real funke to me i wouldnt have done it like that but hey ive only been in service for 4 years. i dont see a trap and i just had LASIK. is that Copper drip leg considered a trap and why did they use copper?

[tucson]

Thanks mrbill for explaining that.

They had to cap off that turbine because it was in the way so maybe that's what they were talking about.

Sue

[tucson]

techace79, I don't know. I'll see if I can get a better picture tomorrow.

Sue

[BigJon3475]

i dont know but that drain looks real funke to me i wouldnt have done it like that but hey ive only been in service for 4 years. i dont see a trap and i just had LASIK. is that Copper drip leg considered a trap and why did they use copper?


You see where it sits lower than the line itself I think thats a loop or trap and it just happens to be in the picture inline with the rest of the drop down.

[tucson]

Here's another pic.

As far as using copper, that was specified in most if not all of my estimates. I think it's because plastic pipe doesn't last long in this climate.

Thanks,

Sue

:cool: Forecast is for 90 on Wednesday!

[BigJon3475]

copper turns green when oxidizing....I hope that wont change the color of your pretty roof.

[marvin]

doubt that the pipe will turn green from oxidation in tuscon more like a dirty brown the plastic will hold up if it has a good coat of paint on it
the uv is what destroys it & you get plenty of uv rays down there
overall the install looks good & should last you for years to come

[captube]

Enjoy your new unit Tucson looks fine to me
Glad to see your follow up pictures (we like pics) :)

[t527ed]

i for one was happy to see the roof elbows used instead of being downshot.
downshot with condensate blockage can be a real disaster.


i would have done it downshot instead of the exposed elbows. with the lip around the bottom of the air openings on lennox units i have never had a plugged drain leak water down the duct.:cool:


still it is a nice clean looking install, should give you many yrs of service.:)

[BigJon3475]

doubt that the pipe will turn green from oxidation in tuscon more like a dirty brown the plastic will hold up if it has a good coat of paint on it
the uv is what destroys it & you get plenty of uv rays down there
overall the install looks good & should last you for years to come

Well that makes more sense to me....Is it chlorine is water that turns it green? Is that why plumbing pipes turn green?

[Shophound]

Well that makes more sense to me....Is it chlorine is water that turns it green? Is that why plumbing pipes turn green?

Copper turns green due to oxidation. Since water has oxygen as part of its molecular composition, a copper pipe exposed to consistent moisture may turn green. Out in dry climates I didn't see many copper condensate lines on rooftops that were green, if any. In humid climates I've actually seen algae grow on the uninsulated section of a suction line filter-drier, and I've seen green suction lines where they also lacked insulation.

[BigJon3475]

HUH.....I wonder if this is the answer to that other thread with the geen slime in the system. I did know pool liners can turn green (not algae though) when certain conditions exsist but I wasn't sure about copper. thanks. Sorry off topic I'm done...My apologies Original Poster.

[Mr Bill]

Again the job look fine! should keep you comfortable for a long time you should refer those folks to everyone you know that might be in need of a a/c and heating system. :D

[tucson]

BigJon, no need to apologize. I've gotten so much help from this site, if my post leads to someone else learning something then I'm happy.

And thanks again to everyone who has helped me out in this process. You're an invaluable resource to us homeowners and it's very generous of you to take time out of your busy schedules to assist us.

:) Sue

[Balystic]

Nobody noticed that the plenum in the attic is not insulated??

[beenthere]

Nobody noticed that the plenum in the attic is not insulated??

I didn't see any pins, but it could be lined.

[pyropaul]

Well that makes more sense to me....Is it chlorine is water that turns it green? Is that why plumbing pipes turn green?

Copper oxide (Cu2O - brown) slowly absorbs carbon dioxide from the air to form copper carbonate which is green ... this takes many years. Copper chloride is either white (CuCl) or blue-green (CuCl2).

Paul.

[Mr Bill]

Nobody noticed that the plenum in the attic is not insulated??

Can you see through metal superman? how do you know the plenum is not insulated from the inside. :rolleyes:

[BigJon3475]

Copper oxide (Cu2O - brown) slowly absorbs carbon dioxide from the air to form copper carbonate which is green ... this takes many years. Copper chloride is either white (CuCl) or blue-green (CuCl2).

Paul.

And now I know...and knowing is half the battle :D thanks

[Balystic]

Can you see through metal superman? how do you know the plenum is not insulated from the inside. :rolleyes:

My gosh! I didn't mean to offend if I did. I hold you all in high regard. I realize, quoting myself above, that I may have sound sarcastic or like I had a chip on my shoulder.

Wasn't talking down to anyone, honest. I am not superman or a know it all. In fact, i am far from either of those, hence my holding this board with such value.

I realize that it could be lined. It's just that, in my experience, which isn't as much as yours Bill, it didn't LOOK like a lined one.

If it is, I stand corrected. :-)