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Type: Posts; User: HVAC PE

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  1. Replies
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    What code officals want and what is in the code...

    What code officals want and what is in the code can be two different things...

    I agree - the unit should be properly supported for a platform install.

    The FBC does not, however, mention...
  2. I don't have enough information to verify the...

    I don't have enough information to verify the heat load, but you can control the velocity, and thus noise, of the air through the registers / diffusers by adjusting their size. You would probably...
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    2,332

    There is no portion of the FBC Building or...

    There is no portion of the FBC Building or Mechanical codes that stipulate an air handler must be suspended and not installed horizontally on a platform. FBC Mechanical 306.3.2 deals with an AHU...
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    676

    You could try re-balancing the system - install a...

    You could try re-balancing the system - install a larger duct / diffuser or additional diffuser to the room while dampering down supplies to other areas that may not need quite as much air as they...
  5. Replies
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    2,655

    What if the thermostat is controlling a packaged...

    What if the thermostat is controlling a packaged roof top unit?

    I agree - I do not enjoy designing projects in the Miami area... endless review process.
  6. Replies
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    2,655

    I am not aware of any requirement within the...

    I am not aware of any requirement within the Florida Building Code requiring thermostat placement within 5 feet from the AHU. If so, I had better change the way I draw my plans...
  7. Replies
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    3,562

    You may be able to have a Rawal capacity device...

    You may be able to have a Rawal capacity device (hot gas bypass) installed. It can modulate a 5 ton split system down to 80%. Follow attached link for more information:

    http://www.rawal.com/
  8. Overall, the restaurant should be positively...

    Overall, the restaurant should be positively pressurized. It sounds like the hood has both a supply and exhaust fan. Typical exhaust values for a commercial hood are around 100 CFM per square foot,...
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    The Venstar T-1900 (Residential) and T-2900...

    The Venstar T-1900 (Residential) and T-2900 (Commercial) thermostats each have programmable fan features. See website for more info:

    http://www.venstar.com/Thermostats/
  10. Replies
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    363

    You are not required to hold LEED AP...

    You are not required to hold LEED AP certification to work on a LEED project, however it helps becuase you will be more familiar with the LEED requirements. Only one person on the team is required...
  11. If this was new construction there would have to...

    If this was new construction there would have to be ducted returns or transfer grills from each room. However, being a replacement for an existing central return, you should be able to do what you...
  12. Replies
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    In Florida there should be a single duct smoke...

    In Florida there should be a single duct smoke detector in the supply of the system if over 2000 CFM. Since the system in question is at the threshold of the limit, it would be best to install the...
  13. What exactly are you designing for this...

    What exactly are you designing for this restaurant? Will there be completely new A/C and kitchen hood, or use of existing? Have you run a heat load on the space? The kitchen hood will have a fixed...
  14. Replies
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    3,551

    A properly selected system should be chosen based...

    A properly selected system should be chosen based on both sensible and latent loads - anywhere. In the case of a residential system, oftentimes the latent capacity of the system happens to exceed...
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    Yes - 12,000 BTU per ton of cooling, of which...

    Yes - 12,000 BTU per ton of cooling, of which roughy 75% is sensible, and 25% is latent. For the 5 ton system, roughly 45,000 BTU would be sensible, and 15,000 BTU latent (60,000 BTU total). Exact...
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