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Type: Posts; User: shogun8

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  1. Replies
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    1,570

    Modulation is the process of varying one or more...

    Modulation is the process of varying one or more properties of a high-frequency periodic waveform or like when a thermostat sends a signel to a controller to make a change in a supply fan speed or a...
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    2,792

    If you have unloaders they may be loaded up on...

    If you have unloaders they may be loaded up on the 3rd try and hanging up
  3. Replies
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    5,476

    I agree with CFC and remove about 20% on one unit...

    I agree with CFC and remove about 20% on one unit and concentrate on working on it and see what you come up with. Another situation, at 120# your SST was about 34 *F so I suspect that you may have to...
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    I like Ajax

    I like Ajax
  5. google it

    google it
  6. Average KW/H of 25 ton Air Conditioning with R22...

    Average KW/H of 25 ton Air Conditioning with R22
    Heat load BTU/H KW/H EER SCT
    1. 272,000 27.18 10 130
    2.242,000 23,80 10.16 129
    3.212,000 20.44 10.48 128
    4.182,000 17.20 10.64 127...
  7. T0 find the average I would have to take a series...

    T0 find the average I would have to take a series of loads lets say 10 and find an average and thats a lot of work but if I have the time I will see if I can do that any way i find this problem...
  8. I am able to plot the KW/h with changing the load...

    I am able to plot the KW/h with changing the load as I show below
    I can tell you with 272,000BTU/h with R-22 the KW/h = 27.2 with 131*F SCT and 42*F SST, EER = 10
    At 195,000 Btu/h, with R-22...
  9. If we do it this way I get this The gross btu =...

    If we do it this way I get this
    The gross btu = 300,000 btu/h and the net = 272,000 btu/h which is ~91% efficiency now if we find the btu/h we devide by 272,000 by 24Hours I get 11,333 btu/h and if...
  10. I worked this out EER = energy efficient ratio...

    I worked this out
    EER = energy efficient ratio (Btu/Wh) there-for 10 EER = to 12/10 =1.2 btu/wh times 1000 W or 1 KW =1,200 BTU/H and for IEER=12/10.4=1.15 W/H x 1kw=1150 btu/h so lets split it to...
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    2,564

    read this it may help you...

    read this it may help you http://www.webhealth.co.uk/a_to_z_of_health/metallic_taste.asp
  12. Replies
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    3,671

    Take a look at this solution...

    Take a look at this solution
    http://www.aeegeorgia.org/images/061030-Introduction%20of%20Bi-Polar%20Ionization.pdf
  13. Replies
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    2,564

    Trouble breathing accompanied by severe headache...

    Trouble breathing accompanied by severe headache or headache on one particular side of the head may be an indication of an allergic condition or sinusitis. This is also one of the primary breathing...
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    7,263

    A short recurring period of time in which...

    A short recurring period of time in which certain events (Air Conditioning) occur and reach completion or repeat themselves in a regular sequence . In refrigeration/air condition anything less then...
  15. Replies
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    5,363

    An ex-brother in law once ranted to me for an...

    An ex-brother in law once ranted to me for an hour about why the labyrinthine Electoral College system was “totally screwed up to hell.” I’m not saying he’s right or wrong, but if he was right…he had...
  16. Condenser approach should be 0-3 *F Check for...

    Condenser approach should be 0-3 *F Check for some tube fouling
    or low flo
  17. Replies
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    1,481

    Because I want to

    Because I want to
  18. Replies
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    1,481

    Duct sizing

    For a 4 ton at 1600 CFM Supply = 18" and Return = 21" round per 100 ft at a friction rate of 0.1 wc with (2) 14" x 20" returns each at 800 CFM and 460 FPM
  19. Replies
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    1,536

    It's a sad thing to say but i believe your first...

    It's a sad thing to say but i believe your first and primary concern should be whats best for you always. When I was young i used to think that i owed a company I worked for my loyalty until I got...
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    437

    Suction line needs to be 1-1/8" and liquid line...

    Suction line needs to be 1-1/8" and liquid line needs to be 1/2" at that distance
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    3,437

    Boy am I impressed!! I wonder what math formula ...

    Boy am I impressed!! I wonder what math formula "Bubba Joe" and "Billy Jack" used the figure how many crimps to make to get the right mass flow,,, Ya think it was trial and error????
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    OK Lets vote which explanation is most...

    OK Lets vote which explanation is most likely!!!!!!!!!!
  23. Replies
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    4,608

    That's the econimizer control sensor. Its...

    That's the econimizer control sensor. Its operation is based on weather it's cloudy or sunny. if its cloudy then you get econimizer full on and if its sunny the econimizer is off and if its partly...
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    Be your own man whatever the consequences, just...

    Be your own man whatever the consequences, just be a decent human being and help others when you can!
  25. Replies
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    3,785

    I was working at a large company in the...

    I was working at a large company in the facilities dept. as an hvacr mechanic while going to Cal State Long Beach when i decided to go back to work in the U.A. Union. I had been working about 2 years...
  26. Thread: Empty Wallet

    by shogun8
    Replies
    25
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    1,794

    Around 37 F many heat pumps reach what is called...

    Around 37 F many heat pumps reach what is called the balance point. At or near this temperature the heat pump needs to run constantly to produce enough heat to maintain a comfortable indoor...
  27. In the cooling mode, a malfunctioning check valve...

    In the cooling mode, a malfunctioning check valve at the outdoor coil can result in
    1.high head pressure
    2. low back pressure
    3. hi superheat at the indoor coil
    4. reduced refrigeration effect...
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    1,625

    Probably because it's a non issue :eek:

    Probably because it's a non issue :eek:
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    For more information go here:...

    For more information go here: http://www.gpo.gov/davisbacon/
  30. Thread: please advise

    by shogun8
    Replies
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    578

    That's why we have cell phones you know...to keep...

    That's why we have cell phones you know...to keep in touch!
  31. Replies
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    The most common way to insulate a basement is by...

    The most common way to insulate a basement is by building a framed wall, filling it with fiberglass batts, and covering it with drywall. This unfortunately creates a cavity that is difficult to air...
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    A system that has bad valves will have both a...

    A system that has bad valves will have both a high (suction) pressure along with a low condensing (head) pressure. No other situation will give a system both low head and high suction at the same...
  33. Thread: Thermostat

    by shogun8
    Replies
    10
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    703

    Try weatherstripping the basement door first it's...

    Try weatherstripping the basement door first it's simple enough to do!
  34. Keep the stat no higher then 68 *F or lower at...

    Keep the stat no higher then 68 *F or lower at bed time and no higher then 70*F during the day, ck all the weather stripping for infiltration and hopefully you have proper insulation in the house for...
  35. Closing vents could be the problem why your not...

    Closing vents could be the problem why your not passing enough air across the heat x changer open them and see what happens you may be restricting too much air flow
  36. On my HP I get 103*F out of my diffusers with...

    On my HP I get 103*F out of my diffusers with 72*F return andf OSA at 36*F. I have no electric heat strips and Heat strips should not come on as long as room temperature can be maintained about 70*F...
  37. :D If you have an hi eff furnice you should get...

    :D
    If you have an hi eff furnice you should get the following readings:
    Delta 'T" across the heat x changer = 35*F = 65*F
    stack temperature = 110*F - 120*F if higher look for a low air flow...
  38. The hi temperature sensor may be doing it's job...

    The hi temperature sensor may be doing it's job because as the temperature in the heat x changer continues to run before the thermostat shuts off the burner the limit opens
    This may be a result of...
  39. Replies
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    Your return is too small 8" x 24" at 1200 cfm...

    Your return is too small 8" x 24" at 1200 cfm return = 900 fpm and it should be only 700 fpm
  40. With my termites, about 4 days

    With my termites, about 4 days
  41. Replies
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    Sub- cooling if any always follows condensing...

    Sub- cooling if any always follows condensing temperature so if condensing temperature drops then sub-cooling will follow or said another way. Liquid temperatures will also follow the ambient from...
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    516

    At 180 *F each liner foot of copper fin tube...

    At 180 *F each liner foot of copper fin tube baseboard (1/2” and ¾”) sizes will give off about 600 btu/hr at a 20*F drop so lets say you were sizing baseboard for a room with a heat loss of about...
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    643

    I would go for the lennox

    I would go for the lennox
  44. Replies
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    3,324

    Christmas is celebrated the world over and people...

    Christmas is celebrated the world over and people exchange gifts and wishes too. We present you a list of how to wish to your friends, neighbors, colleagues and loved ones, 'Merry Christmas' or...
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    5,836

    Local # 250

    I got in because nobody would work for this service manager and he despretely need help so I got a work permit from the local and was eventually acceped as a journeyman. Boy he was a SOB to work for....
  46. Replies
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    738

    In some cases, selecting emergency heat also...

    In some cases, selecting emergency heat also powers an emergency heat relay. This relay’s contacts electrically bypass any outdoor thermostats used to stage the electric heat elements. This provides...
  47. Replies
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    10,750

    If your moving about 2000 cfm then the return air...

    If your moving about 2000 cfm then the return air opening is too small and the FPM = 750 and it should be about 500 FPM so I would recommend a minnimum of 20" x 25" opening
  48. Replies
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    Return air should be about 600/700 fet/min and...

    Return air should be about 600/700 fet/min and face velocity on return grills should be around 500 FPM.
  49. Thread: Hp ratings

    by shogun8
    Replies
    8
    Views
    645

    Different refrigerants

    The compressor has a rated volume capacity and is capable of producing 3 HP with R404A but if using R134a needs only 1.5 HP or less btu/hr = less HP
  50. Replies
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    464

    Ah yes, eat your hearts out, but it's only fair...

    Ah yes, eat your hearts out, but it's only fair now we can spreas your wealth
    among the employees.:)
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