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    Which plasma table are you using?

    I'm in the market for a plasma table. I have reviewed a few different ones and I am just as confused as before I began. The current ones I have looked at are the Lockformer, Advance Cutting, Plasma...
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    Speaking of plaster, we just did a job where we...

    Speaking of plaster, we just did a job where we added a system in the attic, the whole works. We had cut all holes and was on the last hole and wouldn't you know it we ran into trouble. Not the...
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    Actually supposed to be any insight, not an...

    Actually supposed to be any insight, not an insight. I really don't see what is so weird, but anyways.

    I went to the http://search.sheetmetalworld.com/news/articles/197.cfm website but do not...
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    Square to round fiiting

    Can someone please give me an insight on where I can find information or drawings on how to make a square to round duct fittings?
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    Lockformer question

    I purchased a Tin Knocker 24 guage lockformer back in March. I keep up with matienance as far as using gear grease and degalvanizing spray. I am hoping someone can tell me why and how to maybe adjust...
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    Lockformer question

    I purchased a Tin Knocker 24 guage lockformer back in March. I keep up with matenance as far as using gear grease and degalvanizing spray. I am hoping someone can tell me why and how to maybe adjust...
  7. Thread: York equipement

    by hvac7
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    1,062

    I do not believe that the Affinity line has 2...

    I do not believe that the Affinity line has 2 stage just yet. I know that the Stealth line has 2 stage up to 16 seer I believe. Check out yorkupg.com and do some research.
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    Just curious to see how you techs handle load...

    Just curious to see how you techs handle load calculations between a custom home and a spec house. Obviously a custom home where the house can be designed to a particular persons comfort is alot...
  9. Thread: filter driers

    by hvac7
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    Can a bi-flow filter dryer be used on just a...

    Can a bi-flow filter dryer be used on just a split-system a.c.?
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    the two 10 inch round supply ducts are metal duct...

    the two 10 inch round supply ducts are metal duct with 6 inch flex tap offs to each vent. a total of probably 30- 35 feet of main trunk line 10 inch all the way with 2 45's on one side to offset...
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    the returns are flex. Two returns which are a 12...

    the returns are flex. Two returns which are a 12 inch and the other a 10 inch. This unit is in the attic and there seems to be no sags in flex.
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    you can hear the pulsation in in just about all...

    you can hear the pulsation in in just about all the supplies. Not terrible but it is noticable
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    1,198

    I should have mentioned that I did replace motor...

    I should have mentioned that I did replace motor and capacitor because I to thought that something was wrong with the motor.
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    1,198

    Went to a call today that the homeowners were...

    Went to a call today that the homeowners were complaining about the air pulsating out of the vent. Which is noticiable but not that bad. Real picky homeowners. The fisrt thing i did was place the fan...
  15. Thread: Who is right?

    by hvac7
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    851

    I had a debate with another guy who has been in...

    I had a debate with another guy who has been in the business for about 40 years (myself only 10 years), about static pressure. I was under the impression that the longer the duct run including all...
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    Should filter grills also be use with an...

    Should filter grills also be use with an electronic air cleaner to keep ducts clean or is this overkill?
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    I gave you the wrong model. That model number is...

    I gave you the wrong model. That model number is a 12 seer unit. I do not have my match up guide here. The heat pump is actually 13 seer but will achieve 14 seer with vs blower.
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    The outside unit will be a ERC030S06. And I think...

    The outside unit will be a ERC030S06. And I think your right Beenthere it is a water guard but I see no way of installing it with the two piece air handler
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    NormChris help me out. I read on another post...

    NormChris help me out. I read on another post were you work for York.
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    I have a question about the G2FD046H17...

    I have a question about the G2FD046H17 multi-position coil. My question is that it comes shipped with an drain pan extension that according to direction it extends into supply air plenum. The problem...
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    the system has a fixed orfice.

    the system has a fixed orfice.
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    I went back today to charge two systems that we...

    I went back today to charge two systems that we installed a few days ago. I decided to start with the upstairs system and after I was done charging this I was taking the guages of and one of the low...
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    I found a leak on a-coil that could easily fix...

    I found a leak on a-coil that could easily fix without replacing. So I abrased pin hole and pressure tested with a trace of freon and nitrogen (150 psi). So with that in the system I decided to...
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    I am doing a very small house (low income...

    I am doing a very small house (low income something like a Habitat for Humanity house) and in each of the 3 bedrooms (11'x9') the windows are offset to one side of the 11' wall, I guess for better...
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    I just installed a ductless split system today...

    I just installed a ductless split system today and the ref. connections were flare fittings (which I am never to fond of) and would be behind the unit hung on the wall which could be a pain if there...
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    Replaceing a/c and coil today. Not changing...

    Replaceing a/c and coil today. Not changing because of compressor burnout or system failure, homeowner just wants to upgrade. The unit we are replacing is about 18 years old, would it be safe to use...
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    Does anyone know of a website that I can get the...

    Does anyone know of a website that I can get the specs to see what carrier systems are matched to achieve 12 seer. For instance with a 38YRA030 would I have to up size air handler to get 12 seers?
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    Have a homeowner wanting to put in an aprilaire...

    Have a homeowner wanting to put in an aprilaire 5000 electronic air cleaner and was wanting to know if the casing is universal. What I mean is in the installation instructions I found on aprilaire...
  29. Thread: air purifiers

    by hvac7
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    752

    We are installing a new system and the customers...

    We are installing a new system and the customers have real bad allergies. I would be open to any good suggestions on maybe what you all have seen to be the best. And do the ultra violet lights really...
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    What is the proper charging procedure on a system...

    What is the proper charging procedure on a system that contained a leak in which all ref. was recovered, leak fixed, pressure tested with nitrogen, and pulled a vacuum down to at least 500 microns?...
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    I am trying to see what the load is for an open...

    I am trying to see what the load is for an open basement floor plan. I am having trouble with understanding what to punch in for the hvac-calc used by most on this site. Heres what I have 1450 sq....
  32. Thread: IMC question

    by hvac7
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    696

    What is the max. distance that a furnace or air...

    What is the max. distance that a furnace or air handler can be located from a crawl access door. I can't find my International mechanical code book and my uncle and I are in a disagreement. If I...
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    When sizing return air for a paticular room...

    When sizing return air for a paticular room should you only try to pull back the same amount you are supplying to that room or should you try to pull back a little more?
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    Sorry NormChris I owe alot of thanks to you!...

    Sorry NormChris I owe alot of thanks to you! Maybe one day I will be able to afford you to come by and drain your brain for your knowledge. LOL!
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    I really owe it to HVAC-Talk and all you super...

    I really owe it to HVAC-Talk and all you super techs. Maybe someday I can be as good as you all! Know that I understand superheat now its its on to subcooling and putting to the two together to make...
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    Please dont laugh at me. But I am new to the...

    Please dont laugh at me. But I am new to the service side of this trade (been just an installer for 9 years) and wanted to know if I understand superheat. So here it goes. Lets say I followed...
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    Need some help on choosing the right humidifier...

    Need some help on choosing the right humidifier for customer needs. I went in to the supply house the other day to pick up aprilaire flow through humidifier and the salesman recommended a skuttle...
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    I am pretty sure my numbers are correct, I will...

    I am pretty sure my numbers are correct, I will have have to back over service report. And why don't the numbers add up? I will post the results again when I have the report in front of me. I wish my...
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    I have a question on charging a Payne 1.5 ton...

    I have a question on charging a Payne 1.5 ton H.P. with a fixed metering devise with superheat. I followed the charging procedure according to manufactures specs. which are find the wet bulb temp of...
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    I hope I am correct when I say 300 psi. What I...

    I hope I am correct when I say 300 psi. What I mean is I use my high side gauge on my manifold set and pressurize the system till the gauge itself reads 300. Is this correct?
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    I pressure tested lineset on an A/C unit with 300...

    I pressure tested lineset on an A/C unit with 300 psi of nitrogen for about 20 minutes. Is this enough time to detetmine if there is a leak or should it be longer? Like I have stated before I have...
  42. Where can I find a wiring diagram of the vision...

    Where can I find a wiring diagram of the vision pro 8320? Looking to see if it has hook ups for humidifier like the robertshaw 9820.
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    thanks tecman. tommorow I am probaly going to...

    thanks tecman. tommorow I am probaly going to open up the sytem to verify the right orfice was installed. I know anytime you open a system a filter dryer is required. but is it going to hurt to add...
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    654

    I went on an no A/C call this evening and found...

    I went on an no A/C call this evening and found that the indoor coil was froze solid. So I told the homeowner that I would be back in the morning. My question is I noticed the lineset size was 5/8"...
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    Went to charge new a/c units today we installed 3...

    Went to charge new a/c units today we installed 3 days ago before final inspections. Would have loved to charged systems the day we set them but electricians had not mounted disconnect and then the...
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    Just curious. Had a service tech tell me one time...

    Just curious. Had a service tech tell me one time that he plugged off one of the holes on a furnace burner manifold to lower btu,s. Anyone heard off this or is he pulling my leg.
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    Went on a service call last week that the...

    Went on a service call last week that the homeowners were complaining about the upstairs H.P. was running continuously even with the t-stat in the off position. This is a 2 system house with a 1.5...
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    Went on an service call today for no A/C. When we...

    Went on an service call today for no A/C. When we got there we found that the last service tech had not hooked up A/C low voltage. (Please bare with me) what they have is a Lennox air handler for...
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    How much do electronic air cleaners really...

    How much do electronic air cleaners really ristrict air flow? I have been installing for about 10 years and really have not installed alot to really know? Now that my Dad and I have started our own...
  50. Thread: slab or a-coil?

    by hvac7
    Replies
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    870

    Can anyone tell me the differance in airflow...

    Can anyone tell me the differance in airflow restriction between a slab coil and an a-coil., if there is a differance.
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