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old unite left on roof ,or it's not set on a curb

that reminds me of a call in Panama city Beach years ago at a resort. I went on a trouble call. The unit had no fins left on the coils, coils and all sheet metal rotted out (100 yards from the gulf) They wanted me to connect the "New Unit" There was no new unit. The maintenance guy took me to a pile of rust next to the unit needing replacement. They had purchased and set it on the roof 5 years earlier so that when it was needed it would be there. Nothing to protect it from the salt air. They did not like hearing they had no spare unit......just two rusting hulks, one of which had never been connected.

they left the door open to balance the wight or my for the lennox unit to get in when it need too lol:LOL

Remove old unit and set on roof,check. Set new unit and connect and do the start up,check. Load van,tie down ladder,check. Somehow I feel am forgetting something ????? Oh well. And do you really think they did a start up?

I would have keep kept the Lennox and dumped the Yuck!


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Originally Posted by KickedGinger

BINGO!

Whata ya mean BINGO?...I guessed it first (see post 2)....now I want my Bozo button right now!

Is that a tornado prone area?

10 ton unit sitting on 5 ton curb.

Nothing wrong with leaving the old unit on site for spare parts...

Someone is hoping the copper vultures will pick it clean

Looks suspicious indeed. Could it be that the owner of the building informed hvac/r contractor to leave it on roof so it could be seen by insurance, warranty company, other. Probably more along the lines of a couple of guys not feeling like rigging another unit that day. Could be that Helicopter received call to replace Donald Trumps Rooftop, WHO KNOWS, but as you know you've seen it all until you get to work today!

Originally Posted by craig1

I think the unit on the left is just sitting there. It was previously installed on the curb to the right, but they took it off and set it aside and put a new unit on.

BINGO!

Is that an access door open on the unit on the right? In that case, there is a fine example of gravity cooling, the cold air dropping right down the return if that's the filter/blower section.

Looks like the vent is pointing down towards the fresh air intake on the left hand unit....you are still blowing hot air into the unit regardless of gas or electric causing the system to work harder.

I'm not a tech so I may be way out in left field somewhere.

The curb adaptor looks wrong. Can i have the old Lennox ?

Boy get to cutting. There ia a couple hundred $$$ worth of scrap up there.

Put that in profit for you

Bad Jobs

I'm sure you have all seen the pic of the compressor bolted to a piece of plywood outside the condensing unit and piped in? Works

Originally Posted by timjimbob

Looks like what I did last month.

Customer had a side discharge RTU that needed replacement. Roof products salesman sold him a roof coating that was 6" thick and coated up to RTU panels. Pullung this would have left a huge hole on roofing.

I told customer, let's leave it and put new RTU over duct-roof penetration.

Whats wrong with that?

I think the unit on the left is just sitting there. It was previously installed on the curb to the right, but they took it off and set it aside and put a new unit on.

Originally Posted by CityHvac

Is the flue vent pointed at the economizer on the righthand unit?

I had initially thought this too, but realized there doesn't seem to be a gas line...wouldn't really matter...lol