Type: Posts; User: Allen
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Thank you for the information on the app.
Local 602 serves Washington, DC, Maryland and Northern Virginia.
Good luck to you my friend.
Where did you get your psychrometric app for your Iphone?
Hi Durable Machinery,
Your leaving wet bulb temperature is too low, does not make sense.
I would expect the wet bulb temperature to be around the 55 degrees.
When the air leaves the...
Is the armature (moving part of the starter) pulled completely in?
If it is not pulled completely in, the coil of the starter will pull more current than it should.
The coil of the...
You must weigh the refrigerant charge into the RTU.
Keep warm thoughts.
They are arc guards or also called arc chutes. Their purpose is to give a path to the arc that is created from the inductive "kick" when the contactor opens. They are there for safety...
08-28-2012, 04:35 AM
08-19-2012, 10:58 AM
The VCM goes through calibration once every minute. The calibration sequence is initiated by the firmware in the VCM.
The actual process is: 1. calibration sequence is initiated
Did you check the bellyband crankcase heaters?
The "cornerstone" scrolls must have crankcase heaters.
If the compressors are getting noisy, it could be refrigerant washing the oil off...
07-02-2012, 08:19 PM
There is nothing wrong with the UCM.
If the VAVs are connected to Summit, Summit is stopping your override, and returning it to normal operation. Or what it perceives as normal....
Do you know what the tonnage of the unit or model number?
The model number would be best.
I have pulled the GE book out of the attic.
Let me know.
I will scan it for your tomorrow.
I thought I had it here on this computer
but it is a BTC, cooling only not a heat pump.
By the way, Trane bought GE's air conditioning...
The piping material will be determined by the size of the piping being run.
Typically, what I have seen is, 2.5 inches (63.5 mm) or less is copper.
3 inch (76.2 mm) or larger is...
The advantage of a direct return system is lower cost of materials and labor.
The terminal unit piping is returned to the system return directly, so those returns are of different...
The contacts that you are referring to change state when going from unoccupied to occupied, as you read.
Trane considers heating in a VAV RTU to be an unoccupied operation.
When your 90...
You have a model M compressor in the condensing unit. and there is a two step process to determine what in the Guard Pak (GP) shut the compressor down.
The two things are oil pressure as...
Hi Vic Expert,
I teach in our Local's apprenticeship school.
Is there any training literature or videos available for the Vic fittings and systems?
I had learned the different formulas through the years doing my job. Knowing those formulas helped me to do my job as a serviceman.
There is a good book available from the...
In our chapter we have NEBB certified firms that are not union, and those firms have members that are represented on our different chapter committees, ie technical and educational. One...
Why do you feel that NEBB is exclusionary?
"NEBB's exclusionary practices will make you a lonesome lonely guy."
All they want is for a candidate to pass some tests, that are not...
Knew York could not have presented the union side better.
I'm in the local in the Washington, DC area, and I went through the same way as Knew York. The journeyman classes are excellent.
What is currently controlling the loading and unloading.
Are you cooling air or water?
To load and unload that compressor by suction pressure now, you would need to change the...
Did you learn from your mistake?
Did you clean up your act after and work hard to be a better person?
With you saying that it occurred 17 years ago, I think my two questions have been...
Hi Climate Frontier,
The chilled water flow is the most important flow, too little flow and you won't get the moisture removal that you need.
With that being said, in heating you can get 90% of the...
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