HVAC/R Refrigeration Cycle

[deyenak1]

How come when the cycle reverses into heat mode, the refigerant lines are able to work effectively being the liquid line now becomes the suction line or am I missing something. Why do we have a bigger and a smalller tubing if it can work in the opposite manner and still work effectively?

[DrZarkloff]

@deyenak1 The smaller tubing is always the liquid line and the larger tubing always carries vapor no matter whether it's running in heat or cooling.

[1bengrubb]

You said at the expansion valve it becomes super heated vapor ---- did you mean super cooled? I assume you got rid of all the heat at the condenser.

[DrZarkloff]

@1bengrubb The refrigerant collects heat at the evaporator, hence the refrigerant becomes superheated.

[spelunkerd]

Newbie alert.

The expansion valve had three copper pipes leading in, two large size and one very small diameter. Is the third a pressure feedback device to automatically adjust the diameter of the aperture? Which tube was that?

[DrZarkloff]

@spelunkerd The small tubing is the external equalising tube.

[sergioalv62]

beside i am not a good english speaker, i can`t hear you because the hard noise of the pump. However, it`s a good attemp to explain. thanks from mexico.

[DrZarkloff]

@sergioalv62 I'm sorry about the noise.

[thereceman]

actually it is faster to recover the refrigerant in the vapor side of the recovery tank, because the refrigerant does not have the go through the dip tube on the liquid side it was just spray into the top of the tank

[killourhy82]

thanks for making these videos, make more

[richiemabie]

FHP

[ed110205]

YOUR VIDEOS ARE THE BEST THANK YOU.

[DrZarkloff]

Thank you for watching.

[runasv]

I just wanted to say I enjoy your videos.

[DrZarkloff]

Thanks for watching.

[HIGHHIPHOPdotCOM]

can you do a video on wiring a unit if you dont have a diagram ?

[DrZarkloff]

Thanks. I might try to make that one some day.

[xpakpimpx]

asda

[xpakpimpx]

Good video presentation. Can you explain installation of solenoid valves on refrigeration system with hot gas bypass. please show details about direction and position of installation

[DrZarkloff]

I'll see what I can do. Thanks.

[Ewik666]

you should try and do it with out the pump going, it is a little loud.

great videos tho!

[DrZarkloff]

Thanks for watching.

[V8Jagnut]

good vid. i hope you cleaned those coils.lol

[DrZarkloff]

Thanks. I always do.

[V8Jagnut]

cool. you should sow a befor and after of the coils. :)

[DrZarkloff]

Thanks. There's always a next time.

[winkhvac]

not to many heat pump here northeast

[DrZarkloff]

Believe it or not, Fujitsu ductless heat pumps would do very well up there.

[richiemabie]

What do you think of Samsung?

[THEtechknight]

WACK goes the camra... really need to fix that, hehehe

[DrZarkloff]

I need to make a stand for my camera for when I put it on my dashboard.

[diymania]

Cant they make silent recovery units ? The one you currently have sounds like its about to fall apart and/or blow up.

[DrZarkloff]

The school board buys the least expensive.

[co2x3]

Dr Z EXCELLENT REVIEW ON A HEAT PUMP CYCLE! THAT RIGHT SIDE IS SO BIG A HOMELESS PERSON COULD CRIB OUT IN THEIR. CHANGE OUT THAT FILTER DRYER MUST BE A FUN.

[DrZarkloff]

It is pretty big. And yes, the filter drier was lots of fun to replace.

[mikeanajulie]

drzarkloff am going to start hvac class in november, hoping to be as good as you.i really respeced u as a man

[DrZarkloff]

Thanks for the compliment. I hope you'll be better.

[richgriffin77]

Thanks Doc! Is that some kind of water jacket around the condensing fan motor or just a bracket holding it up? Sorry, not a tech...

[DrZarkloff]

It's just a bracket holding it up.

[rlewis1946]

Maybe it's just the camera mic that makes the recovery noise sound so loud, but for a person who works in this high a noise level, do you ever wear ear protection?

Thanks for sharing these video!!

RL

[DrZarkloff]

I usually wear ear plugs in chiller rooms.

[mechanicwarrior20]

Great job Dr. Z.

[DrZarkloff]

Thanks.

[xjasongarciax]

You know, I don't know anything about Hvac, but I ejoy watching your videos and learning, thanks!

[DrZarkloff]

Thanks for watching.

[rlewis1946]

Me, too!

RL

[67tr876]

cool

[DrZarkloff]

Thanks.

[hotgta]

i love the compressor noise hahaha!

[DrZarkloff]

That was the recovery unit noise.

[hotgta]

hum, pretty much like, Thanks Dr.