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23-09-2017, 08:51 PM #1
Re: Big problems please help, tinkering on this unit for 1 year and still wont work r
Ok with all your help guys here, I think I am honing in on some key problems with my setup
First
Mad fridge. A similar Commercial cooling unit as mine is using a condenser that is 10.5" wide X 9 tall, it is using 1/4" copper tube and has 24 passes back and fourth, totalling 24' of copper tubing inside. It is using a 8" fan, fan speed unknown. this unit is capable of cooling down glycol at a rate of 2500btu/hr.
So I am guessing that the condenser I am using will be ok? all the dimensions are larger than the commercial one. My condenser is 12" X 14" using 3/8 copper tube, has 30 passes, back and fourth, totalling 33.5' of copper tubing. Mine is also using a 8" fan spinning at up to 1550 rpm.
I think my unit has 8530btu unit based on the surface dimensions???
Can having a condenser too large be detrimental?
Mad you mentioned something about adding a split? to balance the pressure?
I think I know what you mean, Correct me if I am wrong, on the liquid side at the top, you take the tube coming in at the top and place a t on it to the first coil bank, at the other end of the t you solder an elbow which feeds the second bank. and does the same thing at the bottom. The pipes make an F correct?
like this unit? 0-8kw-capacity-small-condensing-unit-with.jpg
I think I understand what is being done, but can you please explain the advantage of this? vs 1 long line?
Is it necessary or will the 1 line work for my purposes.
Concerning blowing the heat into the box, I agree, the fan is reversible so I will change that later. On the current setup, (the cowling has a side vent for the air to escape) comes in from condenser, past the compressor and goes out the side. air Temp inside the unit by the motor only gets 3 degrees above ambient (running hot) But a change to be made, duly noted.