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I'm no pro with ice rink but refrigeration is refrigeration.

Is it a indoor ice rink?

If.yes what is the ice (or evap temperature)?
I find 55 f pretty low for condensor water, normal value...

Low gas

Personally I wouldn't do the combustion analysis.
It's a atmospheric burner and there's not much you can do to adjust combustion.

Make sure you have the right manifold pressure at high fire. ...

Corrosion on the ground wire of the Ignition control.
Ground wire is the one that read the flame signal and get it back to the Ignition control.
Have you measured uA reading on the flame rod?
Is...

Gage are always accurate.
More reliable than gimmicks.
Don't need battery.

And if you live up north display will freeze.

Tool ain't making the technician.

Just my feelings this morning.

Because voltage goes down amperage goes up.
But kw always the same.
I've done some math on my side to confirm.

Customer is paying kw so it won't affect is electricity bill or consumption.
...

Quick update from our R&D departments at 575 in I have 60 amp
For 390 volt out at 80 amp frequency at 38hz.
Lower the speed higher the amp reading difference.

My friend Google told me that what...

Got 2 new daikin awv (variable speed screw)

I have saw too that there's a difference between amp on the line side and the load side..
I'm heading there tomorrow morning. I have not noted how big...

Refrigerant will migrate to the coldest place, depending on the type of chiller might or might not create a issue.
Probably not.
Like you said running hrc will save on cooling tower and reheat...

Why not run water to a stopped chiller?

If your using another source for heating for your reheat your paying twice

(edited) What type of load you want to maintain on cooling side (process or comfort) and where do you send the heat recovered?
If there's a demand for heat I'd start hrc until there is no more room...

If the chiller were built for heat recovery they should have a heating and cooling setpoint in their controller.
All the chiller I know just need a permission to run and will automatically do the...

It's for head pressure control. Instead of cycling the fan, you reduce airflow.
When head pressure raise you open the damper.
If it drop damper close

I don't know if such guide exist.
You need help figuring something?

How many compressor per circuit?

If you want to get the data needed take the same reading at 100% on all circuit.
With water temp.
Have you read the manual about oil return procedure?

How do you know you need refrigerant?

I only see part of the data needed to arrive to that answer.

Put some meat on the bone if you want help.

No offense meant but I'm wondering how often...

Superheat is a good start.
What is the net oil pressure?
Is it intermittent? (transducer on the service valve. Don't completely close the valve)
This is a recip compressor I believe. More detail...

That is a great idea.
Maybe you can ask Emerson for guidance or check there bulletin.
If it's a scrool be advised that the one for vfd have been modified to help the lubrification for both...

You told us previously that you had some electrical background.

There is more than electrical that you'll need to think of.

Your main concern as the system as not been designed for variable...

Where is chilly

We haven't heard back from him?

We started to try
Wd 40 ptfe dry lube.
It won't collect dust and don't smell to much.
Will see if it pass the test of time

You could go for a graphite spray. But be advised it's messy

We started to try
Wd 40 ptfe dry lube.
It won't collect dust and don't smell to much.

You could go for a graphite spray. But be advised it's messy

Will see if it pass the test of time

Before adding or removing gas.
Take all the other numbers.
It will help you figure out the problem

You probably have a hot gas bypass feeding on suction side. That may explain why pressure jump up and down.

Is the unit undercharged?

At that ambiant temp you should not be feeding with hot gas.

More detail will help.
Is it recirculating air or 100% fresh air.

What is the td
Suction pressure
Discharge pressure
Suct line temp
Liquid line temp
Taken at full load

Refrigeration when you think about it is all the same.

Superheat will always be superheat 12-20 F close to operating temp is good.
I'm assuming you have a small type of chiller if you don't have...

If you call a technician he should have the technician password

I didn't know that aaon where using Toshiba vfd.

New setup or older stuff?

Just saying. Vdc =temp in celsius not F

Depending on how much offset you have. At some point its no good to recalibrate. Let say above 5 f
I believe recalibration is done at startup or as fine...

The question was asked mostly because I'm curious. I did learn about the Siemens bt300 that I haven't seen on our side of town.

Everybody has something they like about a particular type of drive....

Funny honeywell smart vfd look a lot like the Siemens bt300 Mpeterson21 told us about.

Hard to say because we haven't tried any of those 2 model

Didn't know that all option board where all on board..
Siemens are reliable?

Will definitely look to get some more info on those drive..

Our office use a lot of yaskawa a1000 easy to copy...

Hi

What is your favorite brand of drive.

Why?

Low pressure is reverse operation and need to be open to show as good?
NC contact might be for alarm

Is the VCCX2 bacnet ready or you still need a fieldserver control in between.

In the older style board a external comm board was needed

Hi Augusto,

Is it a 30hr chiller.
Old mechanical recip type chiller?
In the manual the B stand for r134a

You can find it by googling carrier 30hr.
If you have access to a cell phone with...

Reclaim refrigerant that as migrated to the roof on a cold day?

Sure enough that for a heat pump. The guy didn't have biflow dryer so he decided to put in two standard dryer and just flipped one with the arrow pointing at the condensor

Water temp will let's us see if he as some high load on the evap (he got a high Suct sat temp)
With high TD we could see if flow is good or not.

Partial number lead only to partial or wrong...

Google is telling me that 38ak is a split condensor. Not a chiller
Is Google right? Just trying to figure out on what your working.
How long of pipe do you have to the condensor.
What is water...

Not yet this is only a small part of a bigger project.
Should be done in May.

One thing that I see Is the fan coil closest to the supply is the last on the return. It make sense to "balance" the flow at each coil

Why have they went so high with the return I don't know.

Thanks

Open upc was factory installed.
We want to do a integration from what I heard there is a automapping feature that grab 50 point.
Is that right

We need to integrate a 30hx chiller thru bacnet thru a open upc module.Looking at some older post I see there's a automapping feature that need to be disabled.And I manually enable the point I want ...

Have any of you tested win 10 with all those software from the manufacturer that make our life easier.
Like trane techview.
Vfd software
Turbocor software
Any other software you can think off....

You got mail

Get some pressure reading with gage and some temperature.
It will help you and those who want to help you out.

As a rule of thumb you look for 2 to 2.4 gpm per ton at the evap.

Around 3 gpm per ton on the condensor.

Regardless of the option it's just a standard.

I did not found your evaporator code...

Why don't you go with a vfd. Easier for you, customer might save on energy bill...