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My sister inlaws mom has an old trane ac unitis a M# BTB730A100BO S# Y48246329. Is this a 2.5 ton unit? I coil is a 3 tons, but I'm not sure about the ODU.

Hey the dump where I live charges you 5 bucks and they take anything odu, referigerator, freezer, window shaker, anything.

Get this, this old dude with a nice box van comes(i spoke with him)he...

just getting into light commercial work and ran into lock out switchs and random start switches on mammoth water source heat pumps in building. after studing schematics i figured out the lock out...

sounds like it's been resolved. get the sequencer!

I was taught that a bad txv on evaporator initally causes high head and then it goes down after the refrigerant is pumped down behind the txv that won't fully open.

This was what I was told. The...

I carry a dwyer digital in my pouch. I love it, light weight and many uses.
It reads static on every job I go to. It will also read gas pressures on gas valves (READS THAT LOW!).
I have found...

you just did nitro's homework riding

Aprilaire media filter (about 5 inches thick, installed in return duct, changed once a year)I really love these and despise EAC.

I think it's called intellligent recovery and the system ajust it'self to hit your set point at 9 pm. he is not bullpooping you. You may be able to disable it witout the installers manual. Read the...

When you set the stat back think about this. Not only does your air temp rise. Everything in your home gets warmer. The furniture, the walls, the carpet, the dog, all get hotter. And you are asking...

When you set the stat back think about this. Not only does your air temp rise. Everything in your home gets warmer. The furniture, the walls, the carpet, the dog, all get hotter. And you are asking...

What does the York fossel fuel controll do on the side of their furnace. I see the controlls on the side with the wires from the stat going in and then the low voltage comes out and goes to board on...

A cap and inductor of any type (not even a motor) can give higher voltages across the cap than line voltage.....

this my origional point
yes when you look at voltage on an ocilliscope it peaks...

ok the voltage across the start winding is the voltage across the start capacitor.
and guess what the voltage across the start winding is the line voltage.

if a capacitor can be thought of as a balloon and voltage a pressure. (electrical pressure that is) how can what you guys see occuring happen. the balloon ( capaacitor in this case) can't have higher...

i have a futher question

\if i install a txv in the ahu and charge the system in cooling mode using sub cooling how does this effect heating which still has a piston in odu. can this be done? txv...

The way Rheem ,for instance deals with this problem is to re-install a larger diameter piston in it's place. Last one i did I believe was a 120 or something like that. This causes the freon to be...

this must be a hard one to answer

any txv hotshots out there

any answers for these questions guys?

question, should the valve body be mounted outside of the ahu to keep it's temp above that of the bulb.

The sporlan valve i want to use has a vapor cross...

any answers for these questions guys?

question should the valve body be mounted outside of the ahu to keep it's temp above that of the bulb. (if the valve body temp is lower than bulb charge...

well i found the answer to this one by further reading of sporland literature.

one more question is vga charged bulb a vapor r22 charged bulb or cross charged liquid or cross charged vapor
...

yes shophound. VGA seems to be their reccomended thermostatic bulb charge for R22 on Sporlan TXV's. Its pressure limiting chateristics and anti hunt abilities are mentioned in bulletin 10-9.
...

wow reading is a dangerous thing.

i went to sporlan's web sight and down loaded info on txvs.

it seem to select one you need to know the temp of the liquid at valve (generally abou 100 f) and...

i have seen 2 rheem coils in series on a geothermal system. and i believe they both had txvs.