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Instead of the expense of ball valve and shell driers, recover, reinstall the relatively inexpensive factory recommended driers, and recharge?

is there still carryover at the fpm at the coil? Yes I agree its wrong, but how wrong?

Oops. I meant wyes/90's darn phones. Stratification?

Also, do not put question etc before or after too close as you can have stagnant air in places

Hehe utility co provided

http://www.johnstonesupply.com/storefront/field%20diagnostics/testing-tools-training/tools/refrigeration-ac-tools/system-analyzers/testing-tools-training/tools/refrigeration-ac-tools/system-analyzers/...

Honeywell FDSI x 8 in our company

Oic.. a discharge line location would be a safer bet than the shell... And I did pose a starter to them as well.

working on it

Zw, if you were measuring winding temp in a pot, and placed a resistor external, how do you still have protection?

The end user wanted some form of protection... Just trying to PREVENT a compressor failure due to bad txv etc.. actually. Not trying to sell them.

Edit* reread your post..yes..trying to go one...

We did not diagnose, 20t York split system with Copeland zr12m3 compressors. Customers facilities dept, had already diagnosed and asked for our input. They had already spoke with york, and bypassed....

Agreed about all the above... Air balancing is neglected often as is learning to use a magnehelic...

Copper finned or phenolic coated coils will last longer

well what is the temp split?

my apologies beenthere

I might have missed it, I might be wrong. I did not see any thing mentioned regarding tying into or at least on top of subperlins/perlins/loadbearing walls.

Links to Udarrell's website are not permitted. Due to the DIY rules.

http://www.dwyer-inst.com/primer.cfm

and

http://hvac-talk.com/vbb/showthread.php?t=645371&highlight=magnehelic

here are some great articles

http://hvac-talk.com/vbb/forumdisplay.php?f=135

Sounds like a great opportunity for someone to learn

On a new unit 10 tons or over I call them out... Only had to do a couple times

I need to improve my vernacular... I guess I'm in the right place

imho, I would rather a tech that started at the bottom, went to trade school, ie city college, state school, county vocational, etc. Worked as a grunt while getting paid to learn, changing filters,...

think of a closed switch as a piece of wire. take a wire, see what the voltage is at the end of the wire COMPARED to 12" away from the end. = potential. to ground it would be 120v (in this example)...

an attic fan will do wonders. also on a 70 deg day with sun on the windows, the window temp can hit 105 deg. just like your car