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  1. #1
    Join Date
    Apr 2005
    Posts
    104
    1) Has anybody out there ever used the Canadian Standard F-280 procedure for calculating heat losses/gains for residences?

    2) Is it any different from ACCA's Manual J Residential Load Calculation methode/procedure?

    3) Which "standard" method/procedure should be used?

    Thanks.

  2. #2
    Join Date
    Dec 2003
    Location
    Kenilworth New Jersey
    Posts
    230

    Which "standard" method/procedure should be used?

    Multiply by $ 1.31 or so........

  3. #3
    Join Date
    May 2004
    Location
    Illinois
    Posts
    2,843
    Originally posted by h2045
    Multiply by $ 1.31 or so........
    I'm subbing all my work to you. When can you start?

  4. #4
    Join Date
    Apr 2002
    Posts
    11,808
    I used f-280 all the time for resi in Canada, the HRAI and Ontario Electrical league have a course to do it manually and used to sell there own dos based software.

    Wrightsoft sells an F-280 version.

    Prior to moving the Caribbean, I ran cooling loads for jobs on the islands using my F-280 software and checked it against manual j, comparable results.

    The manual j software I have seen seems to ask whether your windows are partially shaded like 25%, 50% etc where as the F-280 asks you to input how far eaevs overhang windows and how high the eaves are above windows. F-280 seemed a little more accurate and has not let me down yet.

    I still use F-280 for resi loads in the Caribbean.

    If you are doing the jobs in Canada, I would use F-280, mainly because it is referred to in various provincial building codes.
    The way we build has a greater impact on our comfort, energy consumption and IAQ than any HVAC system we install.

    http://www.ductstrap.com/

  5. #5
    Join Date
    Apr 2002
    Posts
    11,808
    F280 will have a method of approximating the air infiltration rates that is in tune with Canadian Building codes as the homes are more tightly sealed.

    A fianl note on f-280 cooling loads is it only calculates the sensible load, you have to make an allowance for latent. The manual j software spits out a latent load for you, at least the ones I tried.
    The way we build has a greater impact on our comfort, energy consumption and IAQ than any HVAC system we install.

    http://www.ductstrap.com/

  6. #6
    Join Date
    Apr 2005
    Posts
    104
    Delicious info!
    Thanks Carnak!

  7. #7
    Join Date
    Apr 2005
    Posts
    36
    Why would you need A/C in Canada? Talk about selling ice to Eskimos.

    Mike from Hot/Humid Mississippi.

  8. #8
    Join Date
    Nov 2001
    Location
    Moose Jaw, Saskatchewan, Canada Occupation:Interprovincial Plumber, Commercial Gasfitter Interests:
    Posts
    2,413
    Originally posted by pfemike
    Why would you need A/C in Canada? Talk about selling ice to Eskimos.

    Mike from Hot/Humid Mississippi.

    Moose Jaw, Saskatchewan. (north of Montana/North Dakaota)

    93f and 83% humidity June 22,2005

    Jackson, Mississippi

    90f and 90% humidity June 22,2005

    We get to sell a/c and furnaces.
    I love my job, but paydays Thursday

  9. #9
    Join Date
    Apr 2005
    Posts
    36
    Hehehe, Canadians just can't take a joke. eh?

    Like that time, the Montreal team played a game and they flew the Canadian flag upside down. I mean really, sometimes leaves hang down off tree branches, who knew.

    Now, Rich you're homework is to give me the degree Heating and cooling days for Moose Jaw and Hot Coffee, Mississippi.

    Yes, we've got our share of weird place names too.

    Mike


  10. #10
    Join Date
    Nov 2001
    Location
    Moose Jaw, Saskatchewan, Canada Occupation:Interprovincial Plumber, Commercial Gasfitter Interests:
    Posts
    2,413
    Actually, it looks like I could sell you a boiler. Who would of thought you get snow way down there???????




    Hot Coffee, just outside of Collins. For the month of June, HDD 0. CDD 326. GDD 716. Moose Jaw, HDD 100, CDD 40, GDD 249. That's current for the month of June,2005. For the totals, I could go dig out the ASHRAE books at work.

    And now for the best part. Hours of daylight today; Hot Coffee, 14hr,12min, Moose Jaw, 16hr, 24min.

    I think you are getting shortchanged down there.

    BTW here is the link I found for weather. Looks like a good site.

    http://www.weatherunderground.com/cg...uery=moose+jaw

    [Edited by rich pickering on 06-26-2005 at 09:53 PM]
    I love my job, but paydays Thursday

  11. #11
    Join Date
    Apr 2005
    Posts
    36
    Well done, you get an A. Come on down and I'll feed you some catfish and hushpuppies.

    Mike


  12. #12
    Join Date
    Nov 2001
    Location
    Moose Jaw, Saskatchewan, Canada Occupation:Interprovincial Plumber, Commercial Gasfitter Interests:
    Posts
    2,413
    Won't be going that far this year, but if come up here we can do the same.
    Rich
    I love my job, but paydays Thursday

  13. #13
    Join Date
    Sep 2004
    Posts
    67
    Hey..........Great weather site.

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