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  1. Alternate: TWO 2-Ton Heat Pump Systems ...

    Alternate: TWO 2-Ton Heat Pump Systems
    __________________ Eliminate the temperature difference between the floors

    _______________________ ??? ???
    ____________ $ 0._ _ _ / kw-hour
    ...
  2. Where is this resdience located ? ___ Country...

    Where is this resdience located ?
    ___ Country _______
    _____ State _______
    _________ ZIP _ _ _ _ _
  3. Where is the orginal Duct Design Drawing?

    Where is the orginal Duct Design Drawing?
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    If a house needs ~ 2.8-Tons, what is the actual...

    If a house needs ~ 2.8-Tons,
    what is the actual CFM & dT performance
    required for an installed 3.0 Ton System to maintain 75'F?

    ________ Example ___
    With dT of 15'F, the actual capacity...
  5. Replies
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    approximately 30'x30' with 10' ceilings. The...

    approximately 30'x30' with 10' ceilings.

    The shop will soon be insulated

    WHERE in New York?
    _______ Syracuse, ....
    _________ Design Temperature: ~ 4'F

    _ Floor Area: 900 Sq Feet
    ...
  6. Based on the narrative above, it appears that the...

    Based on the narrative above, it appears that the duct work installation was Not completed.

    Compare all the photos of the As-Built duct work with the Duct Design Drawing.

    Perform a MANUAL D...
  7. 39,800 BTU/HR COOLING at 94'F 72,330 BTU/HR...

    39,800 BTU/HR COOLING at 94'F
    72,330 BTU/HR HEATING at 9'F

    Where do the Construction Details differ from the plans and This Model ?

    Given the past 12+ months Energy costs and Use,
    This...
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    I do not see any difference in the rated air flow...

    I do not see any difference in the rated air flow rates.

    https://www.amana-hac.com/products/gas-furnaces/90-afue-gas-furnaces/96-afue-amvc96

    Air flow using a 5-Ton A/C will ALWAYS be suspect...
  9. What was the Total Air Flow rate stated in the...

    What was the Total Air Flow rate stated in the original Commissioning Report?

    What is the T.E.S.P. ?
    ___ Total External Static Pressure

    Furnace Model # ________
    ___ Coil Model #...
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    1991 Built 2,000 Sq Ft __ 2- Story __ RI ...

    1991 Built
    2,000 Sq Ft __ 2- Story __ RI

    24,090 BTU/HR at 88'F

    20,520 BTU/HR at 88'F __ SENSIBLE Cooling Load

    IS this Sample Calc close to your CONSTRUCTION DETAILS ?
  11. Approximate SDGE Energy Cost

    Approximate SDGE Energy Cost
  12. 2- Tons at 88'F Design Temperature Pre-cool...

    2- Tons at 88'F Design Temperature

    Pre-cool and
    Let indoor temperature rise ~ 3'F to 78'F in late afternoon
    IF on SDGE Time-of-Use Rate.
    ___ Peak Rate : 4 pm to 9 pm

    Replace the...
  13. Replies
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    Follow the HVAC Design Process ...

    Follow the HVAC Design Process
    ______________________ Figure 3

    Each residence is Unique.
    __ Age
    __ Size / # of Floors
    __ Location
    __ Glass Area
    __ Infiltration
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    You might be OK, but the DX systems will not be...

    You might be OK, but the DX systems will not be able to
    operate at the low Supply Air temperature to obtain 69'F / 45% room conditions.
    72'F at 54% R.H. might be a realistic expectation.

    I...
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    INSIDE CONDITIONS as Specified by Owner : 69'F...

    INSIDE CONDITIONS as Specified by Owner :
    69'F at 45%
    Dew Point: 46.8'F

    How does one provide the cold supply air to accomodate this request?
    Supply Air must be ~ 40'F

    It would be a...
  16. Replies
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    Recent local weather IS or EXCEEDS ASHRAE Design...

    Recent local weather IS or EXCEEDS ASHRAE Design Conditions.

    200 to 300 hours per month for ~ 3 months would be Normal operating times IMO
    _ 7 to 10 hours / day ___

    Obviously, if the...
  17. Seems rather difficult IMO However, anything...

    Seems rather difficult IMO
    However, anything is Do-Able.

    Outside conditions are in the Attachment.

    How much infiltration in this warehouse
    that basically sits in the middle of the...
  18. Replies
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    Damn, Good Luck with THAT. The possibility...

    Damn, Good Luck with THAT.
    The possibility of success ... Negative 100%

    The possibility of additional damage : Very HIGH
  19. ASHRAE 62.2 various editions 0.01 * Floor...

    ASHRAE 62.2 various editions
    0.01 * Floor Area + 7.5 ( # Bedrooms + 1)

    Minimum run time 3 fans at about 104 CFM each :
    ~ 12 minutes per hour

    or one fan ~ 40 Minutes / Hour
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    At 500 CFM /Ton, I wonder how ' Upstairs ... now...

    At 500 CFM /Ton, I wonder how ' Upstairs ... now cools great'.

    How is the Temperature Rise on the Upstairs 120,000 BTU/HR York unit
    with ~ 1,000 CFM?
  21. Guess on the bldg size / construction for an...

    Guess on the bldg size / construction
    for an INITIAL Load Estimate

    __
    EXAMPLE
    __ 91'F ODT / 64'F Interior

    ... ... ATTACHMENT
    _______ 45,800 BTU/HR Cooling +/- 30%
    _______ ...
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    Is your neighbors house < 14' of the proposed...

    Is your neighbors house < 14' of the proposed condensing unit relocation site?
  23. CONSTRUCTION DETAILS STARTS With: 1. Glass...

    CONSTRUCTION DETAILS

    STARTS With:
    1. Glass
    a. Area & Orientaton
    b. Type : Single, Double or Triple Pane
    c. Tinted or Clear

    2. Square Feet / Floor
    _ Basement : _ 800 SF
  24. Go through each step of the Process

    Stick to the guidelines
    ________ Figure 3 __ RESIDENTIAL HVAC DESIGN PROCESS
    ... WWW.MYSIMPLIFIEDHVAC.COM
    gmail address: racingdan11

    STEP 1 _ CONSTRUCTION DETAILS

    CRITERIA:
    ...
  25. Direct ordering of parts frequently results in NO...

    Direct ordering of parts frequently results in NO Warranty.
    Could be a rather poor position to be in ~ 4 to 8 years after installation.

    Follow Figure 3 _

    Year Built _ _ _ _

    Number,...
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    Are you combining the supply ducts also? If...

    Are you combining the supply ducts also?
    If YES, What size?
  27. Replies
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    Just when one starts to think that they have ...

    Just when one starts to think that they have Heard Everything ... ...

    This situation should turn out to be 1 for the Price of Two.
    _____________ or more likely Price of FOUR after ~ 2 years...
  28. To provide 65'F at 45% Relative Humidity, the...

    To provide 65'F at 45% Relative Humidity, the cooling coil must
    have an Apparatus Dew Point ADP of ~40'F.

    Chilled Water at 36'F can provide a ~ 42'F Leaving Air Temperature
    IF the...
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    Problem Definition ?..??

    What's the question now?

    Can any1 make sense
    from non-sense / ill-defined issue ?

    Size :_ Post photos of the equipmemt nameplates.
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    YOUR EQUIPMENT SELECTION needs to be performed ...

    YOUR EQUIPMENT SELECTION needs to be performed
    prior to Request for Proposals [ RFP / RFQ ] so all bids are
    for CLOSE-TO-EQUAL Systems.

    THEN
    Formallized, Systematic
    CONTRACTOR BID/...
  31. The procedures to follow are: ... RESIDENTIAL...

    The procedures to follow are: ...
    RESIDENTIAL HVAC DESIGN PROCESS
    ... __ Figure 3

    THEN you are Ready with provided SPECS to request specific proposals
    to meet your requirements.
  32. .. BRYANT .. ... ... :whistle:

    .. BRYANT ..
    ... ... :whistle:
  33. Replies
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    INFINITE Wisdom is self-Bestowed by OwnerS

    INFINITE Wisdom is self-Bestowed by OwnerS
  34. No specific information provided to enable one ...

    No specific information provided to enable one
    to make an appropriate selection.

    Manual J needs to be performed to
    determined the requried Q. Sensible Load.

    GENERIC EXAMPLE
    of what a...
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    MERV 8 is adequate. ____ Use a 3", 4" or 5"...

    MERV 8 is adequate.
    ____ Use a 3", 4" or 5" thick filter.

    Higher E.S.P. will create a hotter blower motor with an associated reduced life.
  36. Replies
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    Total air flow rate and measured motor amps are...

    Total air flow rate and measured motor amps are also necessary to
    determine the real impact of high resistance filters.

    Higher E.S.P. will create a hotter blower motor with an associated...
  37. 1 I don't fully understand How the furnace is...

    1
    I don't fully understand How the furnace is quieter &
    the overall noise is increased.

    Noise is increased WHERE?
    The garage ?
    The master bedroom ?
    The living room?
    Kitchen ?
  38. Replies
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    dT Design = 100 - 71'F = 29'F dT Current = 80 -...

    dT Design = 100 - 71'F = 29'F
    dT Current = 80 - 71'F = 9'F
    ... a Very Basic, EXTREMELY SIMPLIFIED review
    would indicate a run time of ~ 31% [ 9/ 29 ]
    _____________ So, ' in the ball...
  39. A/C air flow rate of 720 CFM is sufficient. ...

    A/C air flow rate of 720 CFM is sufficient.
    _____ ___ ___ | :whistle: | _ 2 Tons * 360 CFM/ Ton

    1,050 CFM = 146% of sufficient total air flow rate.
    Calculated dP for 1,050 is 2.13 x the...
  40. Page 5 _ ___ ECM characteristics __________...

    Page 5 _
    ___ ECM characteristics
    __________...
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    What did the service tech advise when you...

    What did the service tech advise when you discussed this situation with him?
  42. Trane, Bryant or ___ 2 or 3-ton 2-stage ...

    Trane, Bryant or ___ 2 or 3-ton 2-stage
    Furnace: Presume Natural Gas
    ____________________________

    ZIP _ _ _ _ _
    Floor Area ?____ Square Feet
    Single or Two-story

    Glass Area ?____ ...
  43. Replies
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    Presuming that an A/C unit may just be a...

    Presuming that an A/C unit may
    just be a little bit of C.Y.A. by the electrical utility representative.
    They are attempting to identify what might come in the next 2 or 3 decades.
  44. Replies
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    29 tons in SE PA ought to be adequate for >...

    29 tons in SE PA ought to be adequate for > 25,000 Sq Feet, < 30 year old residence.

    Send plans & specs for a realistic " Quick Calc " Manual J
    gmail: racingdan11

    Glass Area: ________ Sq...
  45. Replies
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    Do D.I.Y. & AIR-TIGHT go together?

    Do D.I.Y. & AIR-TIGHT go together?
  46. Replies
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    ZIP _ _ _ _ _ Is the OutDoor design...

    ZIP _ _ _ _ _

    Is the OutDoor design Temperature 87'F [ International Falls MN / Calgary ] or 117'F [ Las Vegas] ?


    ______
    Before DE-Rate for high ODT
    ______________ +++ 5% to 15% for...
  47. Replies
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    https://www.spray-on.com/k13/?_vsrefdom=ppcbing&ms...

    https://www.spray-on.com/k13/?_vsrefdom=ppcbing&msclkid=c62ecb23c8381bb154c9ab886bdd3d51&utm_source=bing&utm_medium=cpc&utm_campaign=International%20Cellulose%20Corporation&utm_term=%2BClosed%20%2BCel...
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    Return Air __ - Supply Air ____ 72'F __ -...

    Return Air __ - Supply Air
    ____ 72'F __ - 42'F _____ 30'F dT

    How does one achieve ~ 33'F at the coil to provide 42'F air flow through the coil ?
  49. Replies
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    A 2020, well built 756 sq foot Single level home...

    A 2020, well built 756 sq foot Single level home at latitude ~ 41'N
    should only need 1.0 ton.

    2005 Built might need 1.2 Tons

    HVAC DESIGN PROCESS
  50. A THOROUGH, Reasonable evaluation of First Stage...

    A THOROUGH, Reasonable evaluation of First Stage airflows is
    an effort that needs to be performed on-site.

    An Opinion from afar:
    70% capacity of XR17 first stage should provide adequate...
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