HVAC Questions? Ask an HVAC Expert for Answers ASAP
Hello, What do you want to know?
You can reply on the lower box so we can communicate.
Yes..Hello, how are you today?...
you know much about walk in freezers?
I work on them...
I design some...
okay, I am looking at this unit: http://www.ebay.com/itm/30-Walk-In-Cooler-Freezer-w-26-Defrosted-Sliding-Doors-w-Shelving-/151072914079?pt=BI_Commercial_Refrigerators_Freezers&hash=item232ca5ba9f
I need to make sure it will hold at 10 degrees Farenheit
it has floor, evaps, condensor, etc
Ok. That would be an "as is where is " buying type?
i have the pdf file for the scroll compressors
they say it was pulled as a working unit
and all is in excellent condition. The pics of the condensors look like they are in excellent shape
Ok. To answer your question, yes it would go and maintain 10F provided it is in good shape, meaning if it is design to work as a freezer, it should go down even below 10F...But it says there it is a "cooler/freezer" so make sure it is really a freezer and not just a cooler.
If it was pulled out already, there there is no way to test it if it would go to 10 F unless it is hooked back up again.
I thought you would buy it while it is still running, then you can test it if it would pull 10F.
well, i just wanted to make sure the compressors were capable of pulling down to 10F
I can always replace them if I had to.
$10k for this size unit with floor and doors is a great deal
Since this is a great deal, that includes the risk of buying a unit with a bad compressor. That is usually the problem where the owner would just sell the unit rather than buying a new compressor.
can I send you the pdf file and have you look at the compressor information to make sure it will handle 10 degrees??
To tets the compressor alone, if you can ask the seller if you can test the compression of the compressor as well as if it has a leak back.
I could only find out if the compressor is design for low temp.
send the file please...
the information is on page 40 - 43, it's the model ZBD45KCE-TFD
It is a freezer compressor. it could go down suction temperature to -30C.... I would just suggest that you change the oil before using the compressor again.
ok, also, what state are you located in?
I am outside the states...I am in the Philippines...
Your pdf files states that ZBD is for medium temp where as a ZFD is the one design for low temp...So now I would think twice of using the ZBD compressor. both compressor are digital scroll type...
ZBD can be used from 5F to 10.5 F...meaning 10 F would be its lowest operating temperature so you do not have any more slacks when ever you wouild have extreme heat during the summer season...
Where as ZFD compressor would work on 13F to 18 F easily....
so the ZBD is medium temp and the ZFD is low temp?
and it would be a struggle for the ZBD to hold 10 F ??
is that correct?
we would have a lot of traffic in and out of this freezer
So I assume 10F would be impossible to maintain
specially during hot season....
ok, if i bought this unit, would i have to change just the compressors or the entire condensor/compressor & evap units
I would say just the compressor but with the same cooling capacity. Just like on your model number...45KCE...then I would assume that the same capacity for a ZFD would be a ZFD45KCE...
do you think this is a good deal for the box and units?
How much would a brand new unit cost?
By the way..the nominal Horse power of the ZBD45KCE is 6 HP and I just found out on the ZFD..it is ZFD18KVE which is the 6 hP nominal... That would be the basis for the size of the condensing unit as well as the evaporator units...
well, the box alone new would cost about $50,000
I just don't like buying things 'unseen'
well, that is really a great deal. Even if you replace the compressor, I am sure you will not spend another 5,000 for it. so if you would buy the whole unit, you would probably spend 70,000 dollars...
Talk to contractor in your area that could install the unit for you so that he would be the one to maintain it as well.
okay, last question, would this unit be able to keep the temps down to 10f on the large box??
it's a 22hp low temp unit
This is too much...It is rated 22 HP where as your evaporator unit is only 6 Hp rated...So it would be too big for your evaporator...plus you would spend triple the amount of electricity running this condensing unit trying to cool a small 6HP evaporator...they are not match....
But remember, the current freezer uses 2 - 6hp units
So if I found a 12hp single unit, it could run the 4 evaporators?
Or must i replace with 2 - 6 hp units?
Ok...You did not mention that...so the big box is rated 12 HP..because it is using two 6HP compressors....still you would have a 10 HP difference...I would say get two 6 HP compressors...they configure it that way so you can save electricity...it could be configured to run from 1 hp to 12 hp anytime...that is why they are digital scroll compressors....
ok, great, so i must always make sure the evaps are properly sized to the horsepower
if there is a small demand, it would only run one compressor until the demand reaches 50 percent of the capacity.
ok, thanks a lot. You have been very helpful
You are very much welcome...