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  1. #1
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    Default PHOTOS OF AC CONDENSER SPACING

    The concrete pad has sufficient space to allow for proper spacing and clearance, however for some reason, the HVAC installer placed these two condensers 1 ? inches apart. The data plate on one condenser was mostly blocked from view. The serial and model number on one condenser could be seen but that was about it.

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  2. #2
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    Default Re: PHOTOS OF AC CONDENSER SPACING

    They were actually hooked up? Weird. Makes me wonder if someone told the worker it would be nice to use that extra pad space for X.

    www.aic-chicago.com
    773/844-4AIC
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  3. #3
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    Default Re: PHOTOS OF AC CONDENSER SPACING

    Quote Originally Posted by Markus Keller View Post
    They were actually hooked up? Weird. Makes me wonder if someone told the worker it would be nice to use that extra pad space for X.
    Hi Markus, yes they were connected and operational. This was an existing home.


  4. #4
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    Default Re: PHOTOS OF AC CONDENSER SPACING

    I see what looks like three holes in the slab where the right condenser unit may have been anchored originally.

    I looked because, if the condenser had been mounted where all that space is, the condenser unit would have been in the required working space in front of the two disconnects, so ... some brilliant person 'took care of that issue'.

    Except that they created another issue, possibly more than one issue.

    First, that panel with the nameplate on it looks like the one which needs to be removed for servicing, which means that unit likely does not have the required service workspace for the condenser unit (which is 30" by 30" per the mechanical sections of the code, but ... those appliances are also electrical, and electrical requires 30" by 36" access - many HVAC people forget, or don't know, about the electrical working space requirements).

    The other issue could be spacing between the units for air circulation - "could be" as I have seen installation instructions which require 12" at all sides, which makes 24" between units; I've also seen some which allow 0" on one side if the other sides have 24"; I've also seen where the spacing between multiple units, up to two units, is reduced to 12" between units on one side (unfortunately, that was on condo roofs where the "multiple units" consisted of 12 units on one rack, and they were all only 12" apart, making that 12" on two sides); I've also seen other clearances, so that would need to be checked based on the manufacturer and the model number.

    What are those two wall caps behind the condenser units? Two dryer vents? Seems unlikely.

    Jerry Peck, Construction / Litigation Consultant
    Construction Litigation Consultants, LLC ( www.ConstructionLitigationConsultants.com )
    www.AskCodeMan.com

  5. #5
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    Garland, TX
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    Default Re: PHOTOS OF AC CONDENSER SPACING

    Quote Originally Posted by Jerry Peck View Post
    What are those two wall caps behind the condenser units? Two dryer vents? Seems unlikely.
    vent caps are used as faux-flashing here to run the refer-line & t-stat wire from units into the structure or vice-versa
    it's the chicken egg thing

    Carrier Clearance Requirements
    When installing, allow sufficient space for airflow clearance,
    wiring, refrigerant piping, and service. Allow 24 in. (609.6 mm)
    clearance to service end of unit and 48 in. (1219.2 mm) (above
    unit. For proper airflow, a 6--in. (152.4 mm) clearance on 1 side of
    unit and 12--in. (304.8 mm) on all remaining sides must be
    maintained. Maintain a distance of 24 in. (609.6 mm) between
    units. Position so water, snow, or ice from roof or eaves cannot fall
    directly on unit.

    secured condensing units are rarer than unicorns in this/Gene's market

    standard deficiency comment in my report that's rarely removed

    badair http://www.adairinspection.com Garland, TX 75042 TREC # 4563
    Commercial-Residential-Construction-EIFS-Infrared Thermography
    life is the random lottery of events followed by numerous narrow escapes

  6. #6
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    Default Re: PHOTOS OF AC CONDENSER SPACING

    Quote Originally Posted by Jerry Peck View Post
    I see what looks like three holes in the slab where the right condenser unit may have been anchored originally.

    I looked because, if the condenser had been mounted where all that space is, the condenser unit would have been in the required working space in front of the two disconnects, so ... some brilliant person 'took care of that issue'.

    Except that they created another issue, possibly more than one issue.

    First, that panel with the nameplate on it looks like the one which needs to be removed for servicing, which means that unit likely does not have the required service workspace for the condenser unit (which is 30" by 30" per the mechanical sections of the code, but ... those appliances are also electrical, and electrical requires 30" by 36" access - many HVAC people forget, or don't know, about the electrical working space requirements).

    The other issue could be spacing between the units for air circulation - "could be" as I have seen installation instructions which require 12" at all sides, which makes 24" between units; I've also seen some which allow 0" on one side if the other sides have 24"; I've also seen where the spacing between multiple units, up to two units, is reduced to 12" between units on one side (unfortunately, that was on condo roofs where the "multiple units" consisted of 12 units on one rack, and they were all only 12" apart, making that 12" on two sides); I've also seen other clearances, so that would need to be checked based on the manufacturer and the model number.

    What are those two wall caps behind the condenser units? Two dryer vents? Seems unlikely.
    Hey Jerry, those caps you mention are the wall-entrance weather covers for the refrigerant lines. They are not dryer vents.

    I suspect you are correct on the places on the concrete pad that appear to have been footing marks from the original condenser location.


  7. #7
    Join Date
    Oct 2018
    Location
    NJ
    Posts
    2

    Default Re: PHOTOS OF AC CONDENSER SPACING

    Quote Originally Posted by Gene South View Post
    The concrete pad has sufficient space to allow for proper spacing and clearance, however for some reason, the HVAC installer placed these two condensers 1 ? inches apart. The data plate on one condenser was mostly blocked from view. The serial and model number on one condenser could be seen but that was about it.
    The installation does not meet Manufacturer of State Code. Have contractor relocate to meet code. Minimal separation is 18" clearance


  8. #8
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    Mar 2007
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    Garland, TX
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    Default Re: PHOTOS OF AC CONDENSER SPACING

    Quote Originally Posted by Michael Laird View Post
    The installation does not meet Manufacturer of State Code. Have contractor relocate to meet code. Minimal separation is 18" clearance
    as depicted by op minimum 24" separation per mfr pg9
    24ACB7-5PD.pdf

    badair http://www.adairinspection.com Garland, TX 75042 TREC # 4563
    Commercial-Residential-Construction-EIFS-Infrared Thermography
    life is the random lottery of events followed by numerous narrow escapes

  9. #9
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    Default Re: PHOTOS OF AC CONDENSER SPACING

    Quote Originally Posted by BARRY ADAIR View Post
    as depicted by op minimum 24" separation per mfr pg9
    There are two problems with the 24 inches shown on page 9:

    1) The Mechanical Code and the Residential Code requires a minimum of 30 inches clearance at the service side.

    2) Being as that is also electrically powered, the NEC and Residential Code requires a minimum working space of 30 inches wide by 36 inches deep at the electrical service access.

    Jerry Peck, Construction / Litigation Consultant
    Construction Litigation Consultants, LLC ( www.ConstructionLitigationConsultants.com )
    www.AskCodeMan.com

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