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markharmon 05-21-2013 10:53 PM

Pressure temp question
 
Can someone explain what pressure temperature is exactly?

carmon 05-21-2013 11:07 PM

in our trade temperature and pressure are directly related...... now grab a book and read.... I am way to old to explain it......:eek:

subcool 05-22-2013 01:02 AM

Look PT chart on line. It will give you the temp for any pressure.

markharmon 05-22-2013 09:41 AM

Quote:

Originally Posted by subcool (Post 1184677)
Look PT chart on line. It will give you the temp for any pressure.

Ok and when you set up your gauges to the system high and low side how do you know what temp/pressure your looking for?

beenthere 05-22-2013 08:32 PM

mark. You said you went to an HVAC school or course. Didn't they go over any of this.

markharmon 05-22-2013 10:11 PM

Quote:

Originally Posted by beenthere (Post 1185290)
mark. You said you went to an HVAC school or course. Didn't they go over any of this.

i was told to use the gauges and a pressure temp chart and the pressure the system should be operating under. It was not a good school. Is this correct? I guess my question is how do I know if the reading is good or not?

bobelectric 05-22-2013 10:16 PM

Not a good school or not a good student?

markharmon 05-22-2013 10:19 PM

Quote:

Originally Posted by bobelectric (Post 1185373)
Not a good school or not a good student?

Not a good school. Can you please help me here. My one confusion is the usage of the pressure temp gauges.

bobelectric 05-22-2013 10:38 PM

Something like look at the needle setting on the guage,(your pressure reading).Follow the needle to the freon you are measuring. (R-22) this your gas temperature.Something like that. Get the books out.

beenthere 05-23-2013 04:31 AM

Quote:

Originally Posted by markharmon (Post 1185369)
i was told to use the gauges and a pressure temp chart and the pressure the system should be operating under. It was not a good school. Is this correct? I guess my question is how do I know if the reading is good or not?

The readings will vary by the conditions of the individual day, and house.

The suction side reading will always have to be above 32 degrees. Get a super heat slide chart.

Study the books you got.


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