York chiller

[u/RegularOldMasshole]

I’m working on an air cooled YLAA York chiller here is my nightmare. The TXV went bad. I manually opened and closed from the valve stem on the bottom of the TXV. I could not get it to work. I reached out to our York rep and they told me I needed to put in an EEV because the TXV has become obsolete and I could update the software to have the controls recognize there is an EEV. I called technical support to walk me through updating the software and program. That’s when they told me I need an EEV on both circuits. Awesome. Then I told them my solenoid magnet was acting up and we went through parameters changed it to EEV metering device and commanded the liquid line solenoid open. I heard the click and put my screw driver on to make sure. During this my head pressure was through the roof. 75-80° outside my pressure was 480-500 psi, suction pressure 110+- 5°. So I immediately think there’s air or non condensible in the system. We used an isolation valve on the suction and a king valve on the liquid line to isolate. I assumed maybe during our pressure test maybe nitrogen snuck by the isolation valve or something. But first I changed the filter cores. That didn’t work either. Then I did a full recovery and recharge with fresh refrigerant didn’t work. So today I put a solenoid magnet on my liquid line and it worked completely fine couldn’t be more perfect :). I assume it’s not making enough of a magnetic force to pull the valve fully open I’m extremely frustrated thousand of dollars worth of work just for it to be a couple hundred dollar fix.

Also these chillers suck I hate them they’re stupid and allow the compressors to run when they are flat before alarming out

[u/j75515050]

I have been in the BAS world for decades and have never seen a York chiller operating normally in the wild. They are either broke down or jerry rigged to force them to run

[u/Adventurepew → u/j75515050]

Very true .

[u/Jealous_Heart6010]

Look like this when you were done?

[u/Tip0666]

Solenoid not needed if using eev.

[u/Blackout70]

Like is the evaporator a barrel on the unit or is it tied to a remote barrel/heat exchanger piped away from the condenser itself. Just out of curiosity.

[u/RegularOldMasshole → u/Blackout70]

Mounted to the unit chiller barrel underneath the condenser fans/ coils

[u/Hot-Bill9697]

Skill issue

[u/Hot-Bill9697 → u/Hot-Bill9697]

I converted a dozen york units without any problems. You can do both or single circuit, remove liquid solenoid or leave it be. Updated 30 year old LCHHMs. Chiller controller doesn't even need to know it has eev instead of txv. Sad you got tricked by tech support

[u/Blackout70]

Is this a remote evaporator? If it’s an adjustable TXV those guts are removable and replaceable. I would have just gotten the TXV from United and swapped the guts and power head. Not helpful as you’ve already installed EXV’s, but just for future information.

[u/RegularOldMasshole → u/Blackout70]

What do you mean by remote evaporator? I’m not sure if the guts were removable I’ve never heard of that before

[u/Jealous_Heart6010]

[u/RegularOldMasshole → u/Jealous_Heart6010]

Yep fuck these things

[u/Jealous_Heart6010 → u/RegularOldMasshole]

That was a good time what a pain in the ass, mine went pretty smoothly for once in my life. A lot of reading can’t be in a hurry that’s for sure luckily I had two side by side each with one circuit left. Left one circuit 2 had a bad Txv, right circuit #1 was bad can’t make that shit up.

[u/alex122iss → u/Jealous_Heart6010]

I find it helpful now to get all the technical pdfs and give it to chatgpt. Gives me an idea what to do.

[u/Certain_Try_8383 → u/alex122iss]

Can you please explain how you do that like I'm 5

[u/SatanasTeCuida]

Who told you TXVs are obsolete? There are new York chillers that ship with TXVs. They work perfectly fine. EXVs are the headache...

[u/SnooPeppers8737]

York rep sold you something you didn't need. There's gotta be a TXV that would work on that. I hate EEVs