Search Results - HVAC-Talk: Heating, Air & Refrigeration Discussion

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  1. fan cycle control might help you

    fan cycle control might help you
  2. Replies
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    774

    For that much space you might need to rent...

    For that much space you might need to rent portable trailer AC unit, they're pretty expensive though. What type of load(meeting hall, storage place etc) this place will have? How long you plan to...
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    290

    CircusEnvy, thank you sooo much for the link, you...

    CircusEnvy, thank you sooo much for the link, you made my life so much easier.
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    231

    Get kW ratio from name plate and turn it into...

    Get kW ratio from name plate and turn it into Btuhs, multiply by number of units you have. And get a Manual N book, load calc for commercial buildings.
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    Most gas stations have residential units, only...

    Most gas stations have residential units, only some have rooftops. I also work for a major gas station chain. Be prepared to do a lot of PMs.
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    You're missing potential airflow problems(you low...

    You're missing potential airflow problems(you low side pressures will be lower than usual) -plugged evap coil, dirty filter, undersized ducts or undersized filter area(coil and ducts could be...
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    I just got exact the same H10 brand new for...

    I just got exact the same H10 brand new for $404.50.
  8. Thread: Warm freezer

    by Frosty_VA
    Replies
    5
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    455

    Door heater produce very small amount of heat,...

    Door heater produce very small amount of heat, with properly working system you should have -10F(-23C) anyway. The same thing with defrost elements - after defrost is over, compressor should be able...
  9. Thread: sman-4

    by Frosty_VA
    Replies
    4
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    239

    Look for the same threads about digital gauges,...

    Look for the same threads about digital gauges, including SMAN3 and SMAN4, there're plenty on this forum. Search engine is your best friend.
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    He is full of it. 20k a year? 80k total? Go to...

    He is full of it. 20k a year? 80k total? Go to college or university for this kind of money, get an engineering degree. Did he tell you this 80k story just to get rid of you so to speak?, you know...
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    I have SMAN3, had to replace plastic...

    I have SMAN3, had to replace plastic handles(Fieldpice sent them for free), temp clamp snapped(probably my fault) and replaced only one set of batteries over 3 years of use. Tossed them inside the...
  12. Thread: hiring in dc

    by Frosty_VA
    Replies
    2
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    294

    Qualified HVAC/R techs are in very high demand in...

    Qualified HVAC/R techs are in very high demand in DC area, however how much you can make depends on your licenses and certifications, your clean DL and background. EPA, NATE, Journeyman HVAC - you...
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    I knew a guy who worked in DDC and he got his...

    I knew a guy who worked in DDC and he got his journeyman HVAC lic in VA. So if you got 240 hours of training and 4 years of exp, go for it, fill out couple of forms, pay fee and send it all to DPOR...
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    2,094

    http://www.amazon.com/Imperial-Eastman-Straight-Kw...

    http://www.amazon.com/Imperial-Eastman-Straight-Kwik-Coupler%C2%AE/dp/B008HQ2TOY/ref=sr_1_1?ie=UTF8&qid=1390877419&sr=8-1&keywords=Straight+Kwik-Coupler

    These will solve the problem. I love them!
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    1,550

    Aahahahaha! Priceless!

    Aahahahaha! Priceless!
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    I think it would be a good idea to elaborate on...

    I think it would be a good idea to elaborate on classes you've had in the college and HVAC training. Also I would delete all non-hvac related jobs(I think most employers don't care). In my resume I...
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    What refrigerant? 315-195=120 psi differential...

    What refrigerant?
    315-195=120 psi differential is too high. As far as I remember for stable operation diff should be a about 40-50 psi. For R22 and R404a I get 190-230 danfoss encapsulated fan cycle...
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    we bid about 4-5 hrs usually

    we bid about 4-5 hrs usually
  19. I honestly don't understand this idea about...

    I honestly don't understand this idea about reversing condenser fan in the OFF cycle, in real life it does not blow dust away(maybe just a bit). Helps to evaporate condensate from the drain pan -...
  20. We do everything from residential HVAC units to...

    We do everything from residential HVAC units to rooftops, light comm refrigeration, ice makers, sometimes even coffee machines. I don't even remember last time when I had less than 50 hrs per week....
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    It was a bad pump, checked old one with my...

    It was a bad pump, checked old one with my gauge(finally got it!) and showed about 60psi max, no matter how i try to adjust pressure screw. Also after a test dropped almost all the way to 0(not a...
  22. Thread: Gages?

    by Frosty_VA
    Replies
    7
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    426

    Fieldpiece SMAN3(or SMAN4). Have them about a 1.5...

    Fieldpiece SMAN3(or SMAN4). Have them about a 1.5 years, work like a clock, lots of good features and good customer support from fieldpiece.
  23. I'd get more insulation in the attic first.

    I'd get more insulation in the attic first.
  24. I'd check TXV screen, replace LLFD(gotta do it...

    I'd check TXV screen, replace LLFD(gotta do it anyway because you'll open the system) and check nozzle in the distributor.
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    First get M# of evap. As far as I remember, 1HP...

    First get M# of evap. As far as I remember, 1HP for medium temp 35F box/25F evap is about 8000btuhs(1HP for low temp with -10F/-20F evap is 4000Btuhs), so say if you have 12000 btuhs evap(see evap...
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