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Type: Posts; User: dan sw fl

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  1. Replies
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    LOCATION: ZIP _ _ _ _ _ /// presume U.S. of A. ...

    LOCATION: ZIP _ _ _ _ _ /// presume U.S. of A.


    COULD be ... 27'N or 72'N ___ 72' W or 127'W
    __________ 120' or 12000' Elevation

    AGE: 1998 or 1898 Built

    Any Windows ?
  2. INPUT VARIABLES - VERIFY

    3-Ton is likely adequate Given a 3/4-Ton Mini-Split in the Master Suite.

    Each BUILDING THERMAL ENVELOPE input value ( in the shaded Cells) needs to Verified.

    ____ Shaded items on
    _ _ _ LINES...
  3. LOCATION: ______, VA … ZIP _ _ _ _ _ < NEEDED...

    LOCATION: ______, VA … ZIP _ _ _ _ _ < NEEDED for Design Temperatures, HDD & CDD

    Leaning towards Option # 3 .. with XR17 or similar for 2 -stages

    VIRGINIA ranges _ Heating Degrees Days HDD >...
  4. MOVING equipment & ducts to Attic may Increase...

    MOVING equipment & ducts to Attic may Increase heat gains 15% to 35%.

    Attic temperatures may be 20'F to ~40'F higher the outdoor temperature in MID PM.
    __"_ ___ _ " _ _____" _ " upto ~60'F...
  5. INITIAL THOUGHTS

    1987 Built _1800 SF __ LA
    Rule-of-Thumb ( or Dumb) --- +/- 21%
    _____ ~ 640+ SF/ Ton __ 1987 GOOD Construction of Building Thermal Envelope

    HIGHLY DEPENDENT ON AGE … 400 SF/ TON ORIGIN ~...
  6. Do you have spray foam insulation on the Attic...

    Do you have spray foam insulation on the Attic rafters/ Roof underside ?
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    INITIAL THOUGHTS

    SEND ME details of your residence and I can get you started.
    It is not complicated in concept.
    However, it requires a LOT OF DETAILS [ TIME ] to develop an Accurate calculation Model.
    My GMAIL...
  8. Thread: Install cost

    by dan sw fl
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    u may expect to pay a Raesaonbale Service fee...

    u may expect to pay a Raesaonbale Service fee
    WITHOUT ANY WARRANTY NOR GUARANTEE.
  9. Thread: Blower speed

    by dan sw fl
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    You must be at 11,444 foot elevation.

    You must be at 11,444 foot elevation.
  10. 3,150 SQ FT __ NE Ohio ___ ZIP _ _ _ _ _ Design...

    3,150 SQ FT __ NE Ohio ___ ZIP _ _ _ _ _ Design Temperatures & HDD / CDD
    ___________________________________ 88'F / 4'F _________ 5,600 / 700 ?

    Built in 2006 or 1956 ?

    4-Ton IF < ~ 20 Years...
  11. INITIAL THOUGHTS & CONCEPTS

    Specific Equipment Selection needs to determine
    number of stages and heat pump size.

    Operating cost ($0.089 / kw-hr) may be ~ $ 900 for
    3-ton Heat pump, 2 stage, 17 SEER
    with 4,600 Heat...
  12. 2644 SF Ranch with Basement KY ZIP _ _ _ _ _...

    2644 SF Ranch with Basement
    KY
    ZIP _ _ _ _ _
    $0.1_ _ / kw-hr ?

    Glass Area - SqFt
    North
    S
    E
    West
  13. WHY 60% R.H. at ~ 75'F? 2.5 Ton - 1,600 SF ...

    WHY 60% R.H. at ~ 75'F?

    2.5 Ton - 1,600 SF - Central Florida
    Return DB - Room Air - 76'F
    Return WB _________- ... 'F ?
    ___ ... Wet Bulb … ~ 66.2'F

    Supply Air DB … ... 'F ?

    Total...
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    https://www.eia.gov/dnav/ng/ng_pri_sum_dcu_SNY_m.h...

    https://www.eia.gov/dnav/ng/ng_pri_sum_dcu_SNY_m.htm
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    I DON'T SPECIFICALLY KNOW IF YOUR COSTS GO WAY...

    I DON'T SPECIFICALLY KNOW
    IF YOUR COSTS GO WAY UP EITHER.

    What is your current cost?

    You use how many therms per month for the last 24 months?

    Oil?

    Natural Gas?
  16. Replies
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    HEAT LOSS might be in THE _BALL PARK of 64,000...

    HEAT LOSS might be in THE _BALL PARK of 64,000 BTU/HR at 15'F

    Your Heat Loss approximation from link
    ___ THANKS to GARY.

    ___ Attachment

    ___ www.loadcalc.net

    ___ ___ ___ LOAD CALC 2200...
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    A LOT OF JUICE ... N E C E S S A R Y

    ___ THINK HARD..!...!!
    about building YOUR Own POWER PLANT.
    __________________________ ~70K dollars for maybe 20 KW SOLAR PV
  18. Location _ _ _ _ _ … … … … … 210 HOURS...

    Location _ _ _ _ _

    … … … … … 210 HOURS operating in June … MUST BE CLOSE TO 40.3'N Latitude

    Mexico City
    ___ Thunder Bay … Given a 1,450 SQ FT BERM Home + 100,000 BTUH Furnace
    _______ OR...
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    3 STRIKES AGAINST YOU RIGHT AT THE START. # 4...

    3 STRIKES AGAINST YOU RIGHT AT THE START.

    # 4
    How could the proposed solution of increasing the delivered air temperature at a reduced air flow rate
    possibly improve the AIR BALANCE situation? ...
  20. BUILDING THERMAL ENVELOPE Description

    You have Solar PV panels ? ___ System Size __ kW

    You seem to be heavily dependent on the local utility rate. WHY?

    ---
    Are the windows NEW double or triple pane?
    The modeling seems to be OLD...
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    You may be able to take advantage of a perceived...

    You may be able to take advantage of a perceived short term cost LOOPHOLE ?

    The future maintenance needs may present a different perspective
    where that loophole
    seem$ to be more of a...
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    If you need a proposal for HVAC design services, ...

    If you need a proposal for HVAC design services,
    my gmail address is racingdan11.

    Window and interior shading schedule /specs, Ceiling, Floor & Wall R-values, infiltration rate and drawings are...
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    I ABSOLUTELY DID NOT SUGGEST ONE A/C SYSTEM. ...

    I ABSOLUTELY DID NOT SUGGEST ONE A/C SYSTEM.

    … will likely only require a total A/C capacity of < 4 tons.
    … DOES NOT mention any specific amount or type of equipment.

    LUTRON shades needed...
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    3,065 SQ FEET with spray foam and SUPERIOR...

    3,065 SQ FEET with spray foam and SUPERIOR WINDOWS [ SHGC < 0.22]
    with your significant overhangs [ shading ]
    will likely only require a total A/C capacity of < 4 tons.

    I did not notice a North...
  25. HVAC + THERMAL BUILDING ENVELOPE SYSTEM DEFINITION ...

    0lder = 1895 or 1995 … IMO
    _______________ 3,800 Sq Feet

    North, CENTRAL N.C. - predominant Heating environment
    3,500 Heating Degree Days
    1,900 Cooling Degree Days

    You wish to replace the...
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    ... LOCATION LOCATION LOCATION LOCATION ...

    Location: ___

    2,800 Sq.Ft., 2-story __ Built in 1957 or 2007?

    320 Sq feet of Windows ?
    SHGC 0.2, 0.4 or 0.6
    U-factor 0.3, 0.4, 0.5 ?

    % R.H. ___ ?
  27. MAIN heat source will be a heat pump (or furnace)...

    MAIN heat source will be a heat pump (or furnace) except for the seven Most Southern FL counties per Section 403 Systems

    Use of Back-up is governed by
    " …
    R403.1.3 Heat pump supplementary heat...
  28. STRAIGHT ELECTRIC Heating violates the Florida...

    STRAIGHT ELECTRIC Heating violates the Florida Building Code, Section EC
    in nearly all Florida counties.
    ...
  29. I Guess WHATEVER 1. the Ductz STUFF THAT WAS...

    I Guess WHATEVER
    1. the Ductz STUFF THAT WAS SPRAYED
    2. or carpet cleaning agents
    3. your place is TOOO COLD AND TOOO DRY
    4. or …
    ______ maybe possible root causes.

    WHY would the fan be set...
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    TRANE / AMERICAN STANDARD is made in TYLER TX ...

    TRANE / AMERICAN STANDARD
    is made in TYLER TX

    Why do you need a furnace.?
    ____ Is residence located North or South of 37'N Latitude?
    ____ Heating Degree Days
    ------ ________________ <...
  31. Replies
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    Services 1,450 + ~ 750 = 2,200 Sq Feet.? 26'N...

    Services 1,450 + ~ 750 = 2,200 Sq Feet.?

    26'N or 52'N Latitude?

    800 or 8,000 Feet Elevation

    House Built in 1895 or 1995?
    Any THERMAL BUILDING ENVELOPE enhancements since original...
  32. Also the system as noted is designed to run a lot...

    Also the system as noted is designed to run a lot
    or all the time
    IF sized properly.
  33. Replies
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    RA Temp ?

    " … Most seemed well however we still had problems hitting 74 degrees in the house.
    The system could pretty easily hit 75 but struggled to hit 74. "

    The statement above is Not consistent with RA...
  34. 10" [ 8" ] INSIDE Diameter Duct ought to be...

    10" [ 8" ] INSIDE Diameter Duct ought to be adequate for a ~ 20' X 20'+ [ 15' X 18'+ ] ROOM
    unless there is HUGE AMOUNT OF GLASS
    OR you are trying to cool to < 74'F.

    What are the Supply Air...
  35. Replies
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    SO, you are now normally running on Stage 1 [ Low...

    SO, you are now normally running on Stage 1 [ Low ]
    when it is < ~85'F outside.?..??

    ODT at time of commissioning?

    What were the measured
    total air flow rate,
    return air temperature
    and...
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    The duct sizing calculation methodology is known...

    The duct sizing calculation methodology is known as ACCA MANUAL D.

    The summary of MINOR LOSS coefficients results in a TEL that will provide a
    reasonable required friction loss
    IF ALL...
  37. 300 FPS = 18,000 FPM is quite FAST NOISE will...

    300 FPS = 18,000 FPM is quite FAST

    NOISE will be VERY HIGH @ 18,000 FPM.


    Do you happen to be a Pilot?
  38. older = ? 1975 or 1998 Single or Double Pane...

    older = ? 1975 or 1998

    Single or Double Pane windows
    ?? 250 Sq Feet Total // ~ 16 windows
    Most Facing N, S, E or West
    … ie. … ... 3, 3, _ 5, 5

    ZIP _ _ _ _ _
    ____ You do not need a gas...
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    ZIP _ _ _ _ _ /// Built in 1899 or 1999 ? ...

    ZIP _ _ _ _ _ /// Built in 1899 or 1999 ?

    Drawings &
    Window Schedule ( SQ FT in Each Direction - N, S, E & West )

    Perimeter
    i.e. - 50' x 30' = 160 lineal feet
    Wall Height - 8, 9 or 10...
  40. PRICING NOT ALLOWED. I guess you did not have...

    PRICING NOT ALLOWED.

    I guess you did not have a chance to READ THE RULES.
  41. 350 - 400 - 450

    More than likely > 1,470 CFM.

    However, 350 [ 450 ] CFM/Ton is O.K. in Humid [ Dry] climate
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    sounds like ______ you are definitely BETWEEN A...

    sounds like ______ you are definitely BETWEEN A ROCK & " A SOUTH FL " Place.

    1. I NEVER USE 5-TON UNITS.
    2. I NEVER USE LENNOX UNITS.
    3. I NEVER USE ...
    ___ > 2 STAGE
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    NEW 2,000 SQ FOOT Residence should need < 2.1...

    NEW 2,000 SQ FOOT Residence
    should need < 2.1 Tons to Maintain < 77'F INSIDE
    when it is < 92'F Outside.

    WINDOWS
    SHGC < 0.28
    U-Factor < 0.34

    Infiltration ?
    __ Blower Door Test required.
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    YOU HAVE TO SPEND A LOT … AT LEAST $ 19 EACH....

    YOU HAVE TO SPEND A LOT … AT LEAST $ 19 EACH....
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    non-stop period to TOO SHORT. ___________ SHOULD...

    non-stop period to TOO SHORT.
    ___________ SHOULD BE 11 AM to 9 PM.

    I guess 76'F SetPoint helped significantly on your OverSized unit.

    … Setting it to 70'F one Should Expect 23.987 Hours /Day...
  46. Do you have 2 or 3 exterior walls? 3 TONS WILL...

    Do you have 2 or 3 exterior walls?

    3 TONS WILL LIKLEY BE OVERSIZED AT < 89'F ODT.
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    I SUPPOSE YOU LIVE in the dessert or you...

    I SUPPOSE YOU LIVE in the dessert or you discovered your FOOT OR TWO OF WATER.
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    Factors: 1. One, 2 or 3 story 2. 700 or 7000...

    Factors:
    1. One, 2 or 3 story

    2. 700 or 7000 Sq Ft Floor Area

    3. Durham NC House Built 2004 _
    __ send me your address & I'll " take an INITIAL Look" in Virtual World space.

    4. ACCA...
  49. I DON'T SEE A SANE CONCLUSION YET that mitigates...

    I DON'T SEE A SANE CONCLUSION YET that mitigates the high relative humidity.

    A thermostat set at 78'F with the room temperature 76'F
    and the A/C RUNNING CONTINOUSLY = INSANITY.

    Is the A/C...
  50. If the room is ACTUALLY @ 74'F and the t-stat is...

    If the room is ACTUALLY @ 74'F and the t-stat is set to 78'F +
    the A/C is Also operating continuously [not kicking off ] ,
    you mean to tell me
    no one even realizes
    that the t-stat is not...
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