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    Txv, evap is in the attic. Ranch style home

    Txv, evap is in the attic. Ranch style home
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    Alright so I came across a system that had 12...

    Alright so I came across a system that had 12 degrees superheat and 22 degrees subcooling. By definition of schooling calling for only 10 on the name plate I am overcharged. But by definition of...
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    So I get that sensible is the measurable heat and...

    So I get that sensible is the measurable heat and latent heat is the heat we can't exactly measure but it does affect the change of states of substances. For refrigeration, in my case, 49 degrees is...
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    Well it seems my system is correctly charged with...

    Well it seems my system is correctly charged with no problems.
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    So the temp on my low side gauge was converted to...

    So the temp on my low side gauge was converted to 49*F and the air entering the coil was 78 degrees making a TD of 29*. On what I read it should be around 40*F but what SEER rating is the 40 rated...
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    TS sorry. TD, when you talk about air...

    TS sorry.

    TD, when you talk about air entering coil are you referring to the WB or DB?
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    No measurable temp takes place because thats the...

    No measurable temp takes place because thats the constant right? that hidden or latent heat is what makes refeigeration work then. Am I getting there? I want to have a lightbulb, planets aligned, an...
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    I hear a TD should be between 20 - 25 degrees....

    I hear a TD should be between 20 - 25 degrees. True?
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    So in the case of water, 212*F is the saturation...

    So in the case of water, 212*F is the saturation temperature where water changes its state from a liquid to a vapor or from vapor to liquid. If there is extra or latent heat added to it, it changes...
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    to remain a constant temp of saturation?

    to remain a constant temp of saturation?
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    can i get assistance with the remaining 25%??

    can i get assistance with the remaining 25%??
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    So I have this emerson check and charge app and...

    So I have this emerson check and charge app and after punching in my records into the required fields, heres what I get:

    Required Superheat
    IWB - 66
    Condenser DB - 85
    Vapor Pressure - 140...
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    That's what my electronic psychrometer told me....

    That's what my electronic psychrometer told me. held it for a few minutes before taking readings. it did go to 66*
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    Thanks. From what I remember, isn't saturation...

    Thanks. From what I remember, isn't saturation temperature the boiling point of a substance? In refrigeration isn't it the boiling point of the refrigerant at that pressure? as opposed to condensing...
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    So I just did my residence and look at the...

    So I just did my residence and look at the findings-

    Trane 4TTR3036A1000AA

    Unit sits in an attic, condenser design is 10* (+/- 3*) subcooling

    ODB - 87*F 66% RH
    IWB- 68*F 50% RH
    Supply - 62...
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    Most houses I come across have their stat set at...

    Most houses I come across have their stat set at 75 to 78. rarely do I get a stat between 70 to 73. That could affect it.
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    I believe that. I have a set of 4v and 2v...

    I believe that.

    I have a set of 4v and 2v Hilmor manifolds with the temp clamps/ gauges calibrated correctly so whenever I hook up my gauges I always take down the superheat and subcooling....
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    No visible kinks within linset, filter driers...

    No visible kinks within linset, filter driers same temp before and after, linset correctly sized, brand new filters.
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    unless the temp drops to -460 degrees F, there is...

    unless the temp drops to -460 degrees F, there is always heat. Yes, I realize that. Everything. I only have 3 years in this trade, 3 months doing service. Went to school but we all know that doesnt...
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    I'm overloaded with the wealth of questions and...

    I'm overloaded with the wealth of questions and answers.
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    Subcooling, Superheat, The Works.

    Hi all,

    So I've been taught in school that your subcooling should be between 8-12 degrees and that the superheat should be 8-12 degrees as well. But here is what I'm always hitting a wall with..
    ...
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    Guys what about airflow? not having enough...

    Guys what about airflow? not having enough airflow could create a high superheat right?
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    Please I insist call me Michael

    Please I insist call me Michael
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    I have a chart on this phone from a unit and it...

    I have a chart on this phone from a unit and it tells me that with a 65 degree liquid line temp with 10 degrees design subcooling the pressure should be 218 psig. So I'm off by 8 psig.
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    Sorry for not knowing but what is that? Example?

    Sorry for not knowing but what is that? Example?
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    I just looked back on my notes, Low side...

    I just looked back on my notes,

    Low side pressure: 65 PSI (10*F)
    High side pressure: 210 PSI (72*F)
    Liquid line temp: 64*F
    Suction line temp: 61*F
    Superheat: 51*
    Subcooling: 8*
    Outdoor...
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    Okay, so with what you guys are saying is making...

    Okay, so with what you guys are saying is making sense. The more I think about the clearer it becomes. But I am still lost. I feel like I need a refresher course with refrigeration..
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    Bad TXV I get but someone please tell more about...

    Bad TXV I get but someone please tell more about a low charge on top of that?
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    But if the system was low on refrigerant wouldn't...

    But if the system was low on refrigerant wouldn't that show a low head pressure and suction as well? Right off the bat I would have a high superheat and low subcooling, no?

    By seeing that it had...
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    Low suction, normal head pressures. Confused.

    Hi all (yall)

    I was doing a PM for a customer and when taking the refrigerant readings, I have come to a complete brain fart as to why the system was doing this.

    Readings:

    Indoor temp: 70 F...
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    That still boggles my mind. 0 degrees to 5...

    That still boggles my mind. 0 degrees to 5 degrees of superheat... I'm still in shock after hearing tech support tell me that.
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    This brings me back one time to a call in New...

    This brings me back one time to a call in New York where the drain line froze up badly and the inducer assembly locked up too and we had to use a heat gun (delicately) to thaw the ice out.
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    So as one poster on here said, check the...

    So as one poster on here said, check the ventilation... the breathing. That in itself will either solve or worsen your problems. I need to study up on the ductometer and know for sure how much CFM is...
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    I overheard that a TXV is rated at 8 degrees SH...

    I overheard that a TXV is rated at 8 degrees SH under optimal conditions... any confirmation of that?
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    but what would you do if you came across a unit...

    but what would you do if you came across a unit that has 2 degrees subcool, 10 degrees superheat, and the evap temp was 40 degrees on a 74 degree day with a indoor RH of 45%?

    I'm not trying to...
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    Not exactly. Im refering to the chart a...

    Not exactly. Im refering to the chart a manufacturer sometimes attached to the back of the plate covering the electrical components of a condenser.
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    I have that in my head. like a nail on wood. ...

    I have that in my head. like a nail on wood.

    Is there a physically way of checking to see what the metering device is? I know its a novice question and very straight forward but sometimes i come...
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    Charging by chart or by subcool/superheat?

    Hi all,

    when charging or inspecting the systems refrigerant level, which do you go by? if there is a chart do I go by that? or do I go upon the basis of subcool (8-12) or superheat (8)? I have...
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    Ah I had my interview with Reliable Heating and...

    Ah I had my interview with Reliable Heating and Air. Signing my papers and doing the drug test on Friday and starting Monday. The new facility they moved into absolutely blew my mind and I was very...
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    Pay Scale North Georgia

    Hi all,

    I have 2 interviews coming up and I would like to know what should I say when they ask about wages? I know for a fact i'm not even touching the $20 range for another few years.

    I got 3...
  41. I appreciate the offer however I don't have any...

    I appreciate the offer however I don't have any intentions of going back up North. I've done my 2 decades in CT. I'll keep the option open to thought.
  42. HVAC Install/Service Technician Jobs in Athens, GA

    Does anybody know someone who is looking for an installer or a hybrid of both installer and service technician within the Athens, GA area? Im looking at career sites like Indeed.com as well as going...
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    Well no they don't ask who I support or which...

    Well no they don't ask who I support or which aisle, but they ask something regarding the political district and Rep and what have you. I just don't see how it's relevant to my career
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    I am quite uneasy when an application asks you...

    I am quite uneasy when an application asks you political questions. I'll have that option open
  45. Replies
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    Thanks

    Thanks
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    2 going on 3 years of hvac install and basic PM...

    2 going on 3 years of hvac install and basic PM in service. I'm scoping the area out
  47. Replies
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    Metro Atlanta HVAC jobs

    Well hello all,

    I am asking anyone reading this who is in the Atlanta area if their company is looking for an installer or apprentice. The current company I'm with is nothing what I would call...
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    Oh it's not for the apprenticeship haha that...

    Oh it's not for the apprenticeship haha that position wasn't open. The field tech position was open and I applied to every open one. That's why I'm worried because I hit the wall at electrical and...
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    Hi all, So I just took the assessment for...

    Hi all,

    So I just took the assessment for Ingersoll Rand and I feel stumped. I get that I'm not the most experienced in HVAC or know the differences in resistors and types of capacitors or...
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    Was that the assessment or the supposed 4 hour...

    Was that the assessment or the supposed 4 hour test?
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