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Originally Posted by jacob-k

a great read, picked up some good info, this is very usefull >(Hot gas, 110F + OAT = Discharge temp)....can I ask what does SC&SH stand for?

That would be the superheat and subcooling temps

a great read, picked up some good info, this is very usefull >(Hot gas, 110F + OAT = Discharge temp)....can I ask what does SC&SH stand for?

Originally Posted by RoBoTeq

I believe that was the RCQB model.

You would be correct sir

Originally Posted by clifpaul

Attachment 359201

Like this John? Its on the indoor coil of the old Rheem heat pump at my house.

That was one of Rheem's dumber ideas for charge compensation. It took so long for the refrigerant to collect in the compensator that the system would go out on high head.

I believe that was the RCQB model.

Ok. I was wondering what that was. And now I know. I couldn't find any info on it in the service or the install manual for the unit. I knew it couldn't be the txv because you have to pull the coil out to get to it.

Originally Posted by clifpaul

Attachment 359201

Like this John? Its on the indoor coil of the old Rheem heat pump at my house.

Originally Posted by John Markl

Paul, next time you look at an old Rheem heat pump indoor coil, you might notice a "chunk of copper" about 1-3/8 inches in diameter along the side of the coil. That is one type of compensator. Newer units have them in the outside unit. Often on Rheems, they are blue in color.

Attachment 359201

Like this John? Its on the indoor coil of the old Rheem heat pump at my house.

Originally Posted by clifpaul

X@. I've seen accumulators, but I've never seen or heard of a charge compensator til now.

Paul, next time you look at an old Rheem heat pump indoor coil, you might notice a "chunk of copper" about 1-3/8 inches in diameter along the side of the coil. That is one type of compensator. Newer units have them in the outside unit. Often on Rheems, they are blue in color.

Originally Posted by SBKold

Don't forget its still just a refrigeration system.

Exactly !!

It makes my skin crawl, when someone claims that you can't "properly" charge a heat pump system in the winter....

If you can't charge a heat pump in the winter, how do you charge a wine display in a liquor store at any point in the year?

That's the difference between guys with "knowledge" and guys with "understanding"...

Originally Posted by energy star

Last used in the 90's. Back when Robo had big hair and tall shoes!

LOL! What makes you think RoBo doesn't still have big hair? Well, maybe not as big, but it still covers all of my head. And the only tall shoes I ever wore were boots.

As for charge compensators, they are still out there.

Last used in the 90's. Back when Robo had big hair and tall shoes!

Good conversation guys. Learned a couple things.

Attachment 357651

Here is a pretty good pic showing the difference between a compensator and an accumulator.


Don't know why pic did not show but here is the link. http://www.cwis.net/~mallie/CompensatorSS.bmp

Thanks. I learned something myself since I didn't know there was a difference.

Originally Posted by clifpaul

My apoligies for the lousy picture posting btw.

That's a better pic than anything I've found so far.

My apoligies for the lousy picture posting btw.

Guess I got myself mixed up.But at least I learned something...
charge accumulator [ATTACH=CONFIG]357621[/ATTACH

suction accumulator] Attachment 357631

I stand corrected gentlemen

Originally Posted by clifpaul

I know what you are talking about now RoBoTeq, you've pretty much described what me and everybody else I've worked with and went to school with calls an accumulator. In fact the the description you gave reads almost like the description for an accumulator for a heat pump out of my old textbook. It never called it a charge compensator.

Not even close. Completely different device.

I know what you are talking about now RoBoTeq, you've pretty much described what me and everybody else I've worked with and went to school with calls an accumulator. In fact the the description you gave reads almost like the description for an accumulator for a heat pump out of my old textbook. It never called it a charge compensator.

I've seen charge compensators in JCI products (York, Luxaire, Coleman and JCI), Rheem brands, Goodman/Amana brands etc.

All they are is a cannister with the suction/hot gas discharge line running through it and a branch off of the liquid line feeding the shell of the canister. In cooling mode, the large line running through the charge compensator gets cold and condenses the refrigerant fed by the liquid line so that the cannister fills up with liquid refrigerant, taking that much refrigerant out or the system. In heat mode, the large line going through the charge compensator is hot, boiling off liquid refrigerant in the compensator and forcing it into the system.