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I am interested in the reg edit that they sent you to enable the USB to Serial port to work in Ultrasite. If you would contact me I would appreciate it.

Just another thought, are they doing a chiller reset? Raising the temp of the water according to the outdoor ambient?

The thing I would add is cycling the fans help lower energy usage. Be careful on setting the fan cycle lower than the Headmaster otherwise they will be fighting each other.

I enjoy reading about others problems and learning from them along with giving advice to help them out.

The newest version of Danfoss AK2 controllers have an option to setup the enviroguard. Just tell it it has a enviroguard and it will give you the inputs.

Thanks for the feed back, going to go Pro someday.

What brand? What model? More infomation needed give us all you got.

Low temp rack is running way to low suction. A -22 evaporator with R404 would only need a 17 cut-in on an RMCC. This is creating a high compression ratio, which will break rods. It looks like your...

I prefer CPC but the Danfoss can read quit a few different companies temperature and pressure sensors if you already have them installed.

What systems? We need more information than this.

Most home owners just want it to work and do not care so much for the safty aspect, but how much does it cost.

With the climate you are in the only answer is to thaw it out and reinsulated with new sorry.

I have found the wire fin combs will fall out with time so I put a line of silicon along both edges where they are crimped in before using them.

The fin comb that looks like a bunch of thin wires work for most sizes. That way you just have to carry one. Google the image.

A good tank of CO2 will blow just about anything out.

http://www.bryanboilers.com/boilers_lit_water_io_data.html

Give this site a try.

Have you found anyone yet? I write software for just this kind of monitoring. We already have Danfoss and CPC monitoring software in use by another large company. Can make contacts or deliver alarms...

On a medium temperature application the 6-8 is correct. The closer you get to the 6 the better the efficient the unit will run saving the costumer energy.

Running low suctions will give you a large compression ratio. Copleand does not recommend anything over 10 to 1.

Seeing that they are TXV systems and they have a sight glass. Make sure they are charged with a full sight glass then recover it all out and weigh it that is the quickest way when you do no have any...

You can lay them on there side for as long as you like just as long as you set them up without plugging them in for 24 hours.

If the system is tight and the people working on it use good practices the oil never needs changed under normal use. How many times have you changed your oil on your wifes refrig?

I would be interested in what LED lights you installed and where you picked them up?

I have left the MO in MP39 larger supermarket systems and have been running for over 8 years without any problems.

I agree and another benifit is more efficient unit lowing the electric usage making a quicker pay back.

They work very well when you have a rack that is over sized for the load. You will have much less short cycling of the compressors saving contactors and compressor life. I also agree with all the...

If you have felt suction cores they will hold a lot of dirt and as the oil passes through them it will pick some of it back up. So if the oil is discolored then change the suction cores also.

LED’s work great and lower the heat load on the compressor. The only down side I have found is on some systems you can get frosting around the doors because of the lost heat generated by the...

I would suspect the cap tube sizing or the amount of charge, because if it is 30 years old it would not have been manufactured with 134a.

Please check the voltage rating on the cap. It should be greater than the voltage to the compressor. Example if the compressor is 220V then the cap should be say a 330V.

If you suspect the TXV’s are over sized and you can not find out the BTU’s of the coil without doing a tube/fin calculation. You need to check the superheat and if you cannot throttle it down then...

Just be careful on the amount of heat you put on old copper. It becomes thin over time and will melt and collapse easily with too much heat.

Working with the foam isolating covering a evaporator I have found leaks under the foam by poring soap bubbles over the foam and letting it soak for a bit and then the bubbles occur. You can not use...

The other thing you might check is the gear box, if it is old and the oil has turned to grease it will pull more amperage.

Over time the ice cylinder scores or gets pitted and accumulates lime. Under the worse conditions you will need to pull the auger and hone the cylinder smooth again. I would replace the bearing and...

POE oil is a very good cleaner, so if the system was put in under less than optimal conditions the oil is bring back dirt to plug things up. The other thing to look at is has someone added UV dye...

CPC boards do not need to be terminated when they are first installed; however, they should be. The low voltage communication will work until it gets some age on it. I have seen them work for a...

The other thing to look at is the set points. If they are running too cold you will see frost built up like this also.

We have quit a few protocols with electronic controls they are very reliable. The short cycling normally comes from being oversized. They are not too bad to work on if you can get around them, all...

Yes, is does shift up the condenser set point to enable more heat for reclaim. Look under the condenser application to see the amount you are shifting.

Raise the suction cut-in just as high as you can and still maintain temperatures. For example a 20 rack running R-22 I would give it a cut-in of #44 and let the Alteh do the work. This will allow...

Here is a short list for a rack system with electronic controls
1. Check ALL transducers-calibrate/replace as necessary
2. Check ALL set points and programming
3. Investigate All case temps....

The demand cooling control can be checked by pulling the sensor off of the control and after about 2 minutes it should shut down the compressor if it is working and no one has bypass the wiring.

Talk to the parts supply house about a water cooled condenser. It will hold up well with lime build up for a few years.

I do not know the laws in the UK, but do you really want to put refrigerant lines underground subject to vibration of the earth with rocks causing possible leaks? At least with treated water the leak...

My water furnace will heat my water for the whole family without any additional element heat when the outdoor ambient drops below 20 degrees. Nice extra.

Water furnace had a rash of bad TXV's I would have a WF tech look at it the Envision series has a 10 year warranty

Check the thermostat settings some they have a differential that can be set. If the room temperature drop ½ degree the unit will bring on 2nd stage, then make sure the auxiliary needs a 1 degree drop...

You have air heat now and going to hydronic is very expensive, but very comfortable. It can be done just order the geo without the electric backup and put a relay in to bring on the boiler. I would...

With a geo system you do not want to do a night setback. Because the unit will turn on then find out it cannot make set point so it will bring on 2nd stage then auxiliary heat costing you money. ...