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I personaly think yaskawa's are sometimes difficult to navigate through especially if you have never seen one before.

yes you are definitly right about schneider they are probably one of the worst to navigate through.

Does the system have multiple condensers daisy chained together? I can tell you from experience that you must turn the power on for all the indoor heads first then the condenser power. After that you...

Just a general question here, what's your preference when it comes to VFD's in respects to user friendlyness, tech support, frequency of problems and which ones you think give the best flexibility...

I have also never seen soft solder used on a refrigeration system, to me that is just asking for trouble. With respects to the unit the compressor is not a burn out and the unit still runs but it...

Yes I already checked into the line set size and it will be ok. With respects to the copper it is all hard drawn copper lines non of it is soft copper from the portion of line set that I can see.

Hi Guys,

I have a commercial customer of mine that has some R-22 residential type a/c units that do the their office space and they want to replace them. My problem is this. To run a new line...

that's a very good question i will find out.

thanks

Thanks HVAC_Marc i will be getting an electrician on site to check the electical panel and make sure it is all good.

pecmsg what do you mean about check with your local code? Are you talking about...

I have a customer that has a few appartments and at the moment he has 1 - 50 Gallon residiential electric hot water tank servicing them. He wants more capacity so the appartments aways have...

I would like to know, were do you think the ideal spot is for an outdoor temperature sensor? I would say it should be located on the north side of the house, am I wrong in saying this?

The reason why i'm asking is because i have a customer that would like to get an better air temp average around the house because he is saying that the top floor is always warmer in the summer. I...

Fair enough, but i do have a problem with the entering water temp at 60 and the leaving water temp at 90. To me that seems like a very large temperature rise across the condenser, usually should...

If the system has just been recently changed to an open loop system within the last year and if there has been a dirt/debrie issue until just recently it is making me lean more towards a water flow...

I am sorry was talking about the prestige 2.0 stat

Hey guys, I was just wondering what it is you all do for chiller start ups just before the cooling season start. Thanks!

Just wondering if anyone knows how many indoor wireless sensor can be added to the Honeywell prestige thermostat. Thanks

For sure sounds like you got 2 different problems, you say that the unit is rated for 3.5gpm and you are capable of providing 7.6gpm but have you actually put a flow meter across the condenser to...

I would put a trace of r-22 in the system and bump up the pressure with nitro, if you can't find it that way I would start isolating the system and pressurize/leak check like that before I would use...

2.5 tons is way overkill for a place that size.

check your air flow you should be running at about 400 cfm per ton of cooling.

I had a problem like this once before and I had good slope on my pan, pan was clear and free of dirt along the coil. Turns out that the furnace was moving way to much air over the coil. Sounds like...

Hey just wondering what anybody thinks about aaon rooftop units, and what's your experience you have had with them. I just looked at one a few days ago and I found they can be a little tricky if you...

indeed your dad is right this unit is a make up air and is intended to be used as one hence MAKE UP AIR meaning it pulls fresh air in to the building these units must be run with adequate exhasut...

Check the flame sensing rod signal, does it have a honeywell burner control on it? what type of boiler is it?

Hey everyone, new to the site here I am from Toronto Canada and have experience in pretty much all aspects of the trade service wise that is. Hope to read a lot of good posts and learn a few tips...