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  1. I am not an expert at this, so take this with a...

    I am not an expert at this, so take this with a grain of salt:

    I think that you are saying that you are going from a smaller duct to a larger duct. I believe your velocity pressure will go down...
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    754

    AAF AMAir-1300 may work for you

    APD seems to be comparable to MERV-8 filters. I think they get there with an electrostatic charge.
    ...
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    515

    The 1.08 formula only applies to the change in...

    The 1.08 formula only applies to the change in sensible temperature. When cooling, there is also latent heat rejection.

    The formula works for heating, because the all of the change in heat can...
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    877

    Call York Airside Technical Service (maybe now...

    Call York Airside Technical Service (maybe now JCI Airside Technical Service) if this is a York Commercial AHU (CS/CSI, CurbPak, AirPak, Solution, Pace, Miller-Picking, but not UPG residential).
    ...
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    6,514

    York offers Heresite as a standard option. ...

    York offers Heresite as a standard option.

    Also, Heresite is a just brand name of a phenolic coating. There are other phenolic coaters in the market.
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    1,598

    Sorry Outside Rep, but you're wrong about where...

    Sorry Outside Rep, but you're wrong about where most chilled water AHU's are made:

    York, McQuay, and Trane are all made in the USA.

    Carrier just moved to Mexico from Tennessee (and paying a...
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    1,598

    I work with air handler marketing in my company....

    I work with air handler marketing in my company.

    Trane is #1, but York and McQuay took a lot of market share from them in 2005.
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    2,556

    I'm the coil engineering manager for the...

    I'm the coil engineering manager for the engineered systems coils for one of the larger HVAC companies.

    Our design policy for R-22 evap coils is no less than 2 psi drop and no more than 14 psi...
  9. Thread: UV lights

    by coolcoil
    Replies
    7
    Views
    996

    Safety concerns with UV

    You also need to install interlocks that ensure that the lights shut off when any door that opens to a space that may have UV light in it is opened.

    This is not just the segment with the lights,...
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    1,077

    York makes any kind of replacement DX coil and...

    York makes any kind of replacement DX coil and ship anywhere in the US. Five day quick ships are available. The toll-free number is 888-880-2645.

    Disclaimer: I work for the company.
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    All - Thanks for the answers, but I realize...

    All -

    Thanks for the answers, but I realize now that I was not clear about what I'm looking for.

    I want to know the percentage of jobs that are glycol vs. the whole universe of chiller - air...
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    1,200

    All - I am a product manager for a coil...

    All -

    I am a product manager for a coil company. Most of the coils we make are water or glycol coils for air handlers. We are having a hot and heavy internal debate about the proportion of new...
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    Copper is up 80%, steel is up 100%, aluminum is...

    Copper is up 80%, steel is up 100%, aluminum is up 25%, and labor benefits are shooting up.

    Companies are rushing to get price increases out there to avoid disaster. 250% seems a bit steep,...
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    1,714

    Water coils not uniformly cold

    A couple of comments:

    1) Unlike a refrigerant coil, counterflow circuited water and glycol coils (see many threads on this subject) are not uniformly cold. The coldest water is on the leaving...
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    1,714

    Your plant engineer is wrong. Lower flow equals...

    Your plant engineer is wrong. Lower flow equals less cooling.

    I just ran my company's (not Carrier, but a big 3) rating program for your coils. The water coil info you gave in your last post...
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    1,714

    Did you convert to the glycol system from another...

    Did you convert to the glycol system from another type of glycol or from water? Coil performance with glycol is signifcantly lower than with water.
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