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Dilbert,

Your current unit is 100kBTU and 60% so you are getting approximately 60kBTU out of the existing unit.

If you upgrade to a 90% then you will be increasing your current efficiency by...

For me and the other non HVAC folk,
What is DSS ?

Thank you.

NormChris,

Here is the instructions to post pictures on this web site
just follow this link:
http://www.hvac-talk.com/vbb/showthread.php?threadid=22507

We are all looking forward to see them!...

Man, the smoke is now clearing. It is obvious that nitro purge is required by many manufacturers including Trane.

Yes I want my new AC and heater to last a long time!!

My wife asked one of the...

They added one collar joint in the lines where they come up through the floor. So there are 4 joints on each line, one at each end and 2 for the collar.
I think a liquid line dryer comes already...

Thanks Coolwhip,
I know I will be fine. But how about the equipment?
Just kidding... Thanks for the reply.

Thanks Irascible,

The rods they used came out of a plastic tube.
The rods looked like stiff solder. So maybe they actually soldered and did not braze after all.

Now that you mention it, they...

I saw in several posts about flowing nitrogen while brazing.
My Trane 19i was installed last week and I did not see either of the installers using nitrogen when they were brazing.
I think that this...

You are right. I don't need to know how to measure the ESP but I want to make sure the installer measures it. My wife is at the install site and not me.
This is at her folks house and the three of...

These ducts are in the attic. The roof slopes down and there is not much working space where the top of the AC coil at 93 1/2 inches off the floor.

My wife is at the house with the installer right...

The secretary of the installers did not know what I meant by a fan chart.

Is this fan chart the one that is in the installation manual or is this some diagnostic chart that the installers have...

Thanks Dash,

I really appreciate your reply.
I will ask them for what you suggest.

It sounds like you completely understood my convoluted question!!!

THANK YOU!!

My parents furnace and AC install was started last week and will be finished tomorrow (connect the freon lines and install the roof vent pipes). It took longer than the installers planned because the...

Amickracing...

To make the venting simple, how about using a concentric vent. This is only one vent hole in the roof with 2 PVCs one inside the other. This is what I am having installed in a...

Yes. That's it. My wife and I both spoke to Trane reps and we were told: Putting a 19i 8 inches from the wall is not a problem and there will be no noticable change in SEER. But one of them also...

I am having a Trane 19i 4 ton AC installed at the south side of my in-laws house. The system will also have a Trane 100kBTU XV90 and a 5inch media filter. The model of the coil is hard to read on...

Thanks Jeep,
I will make sure he puts the pipe in the existing roof vent hole instead of through the wall where the dryer vents.

Thanks for the inputs.
JB

I searched the web for "concentric vent" and found a couple of different styles. One was a box that COMBINED both pipes into one common pipe (not a wise choice). The other looked good, one pipe...

Thanks guys. I will ask my installer for a concentric kit.
The comments about do not use laundry room air make a lot of sense! We want this unit to last a long time.
THANKS FOR ALL THE ADVISE!!! We...

I am not familiar with a concentric kit. Does that mean having two PVC pipes going through one flue hole in the roof?

The house is in Lafayette, CA. It is single story about 2200 sq ft, 50 years old with alot of windows (thin single pane) and no wall insullation.
The existing furnace is 135 intake / 108 output....

I am having a Trane XV90 TUY100R9V4W installed to replace an old gas furnace at my mother-in-laws house. The new furnace will be installed in an un-airconditioned laundry room at one end of the...