copeland Digital Scroll

[supermarketguy]

Hi Guys,

We are on a site and have in our possession a new copeland digital scroll condensing unit.:rolleyes:

We are experiencing a couple of problems with this unit. The unit is attached to 2 off small multi deck sandwhich cases rated at about 3 kw.
we are struggling to maintain a decent back pressure as anything that is in the suction line is being eaten up by the compressor as the eev pulses. this unit apparently is rated to work between 1-7 kw with its capacity control.

My issue is that on any other unit that has a condensing unit attached we fit a tev onto it as it normally never works with a eev. But the manufacture insists that this should work.

So any input from you would be appreciated and any commissioning data that you may have would be a big help.

I have spoken to copeland about this matter and still awaiting a response

Thanks

Supermarketguy

[bill1983]

hi guy
is this an inverter, if so what is controlling it? mae model etc
how is the eev being controlled again make and model please
who commissioned it can you contact them?

[750 Valve]

Should work fine with step motor EEVs in the cases, you'd be pushing sh!t uphill to get a constant suction pressure with so few pulse valves though. Good luck

[fowlie]

what kind of case controllers are you using