Bois D'Arc International Inc. Replacement Coils
Bois D'Arc
International Inc.

P.O. Box 2147
Longview, TX 75606

903.758.2647 (p)
903.758.1342 (f)
800.752.7135 (t)
info@boisdarccoils.com (e)


ADD-A-COOL™ - Retrofit Sub-Cooling Coil

Add-A-Cool


  • Overview
  • Economic Impact
  • CO2 Emmission Reduction
  • Installation Instructions
  •  




    What is ADD-A-COOL™?

    What does it do?
    Add-A-Cool is a retrofit sub-cooling coil designed to increase the efficiency
    of any condensing unit.

    How does it work?
    By sub-cooling the liquid refrigerant as it leaves the condensing unit, the evaporator metering device is supplied with a liquid refrigerant that is up to 20 degrees cooler than before. This sub-cooled refrigerant has a greater heat enthalpy factor as well as a greater density. As a result, the cycle times and frequency of the evaporation cycle (cooling cycle) are reduced, which results in greater efficiency and less energy use.

    Does Add-A-Cool help the environment?
    Yes! The Add-A-Cool unit is 100% recyclable. In addition, the energy savings realized when utilizing an Add-A-Cool unit will reduce energy consumption and lessen the green house gas emissions from power plants due to a decrease in energy usage.

    Why does my existing unit not have this technology?
    In an effort to reduce manufacturing costs, most major O.E.M. HVAC Unit manufacturers removed the separate sub-cooling circuit from their condensing coils.Seperate sub-cooling circuits are rarely seen on units under 100 tons. If you are unsure as to whether your unit has a sub-cooling circuit, ask your professional A/C Technician to check for you.

    How do I maintain my Add-A-Cool?
    Maintenance is minimal; just clean it with water annually when you clean your condensing coil.

    Does my Add-A-Cool have a warranty?
    Yes, each Add-A-Cool is warranted for 5 years against defects in materials and workmanship. However, you must complete and send us your warranty registration card along with a copy of the installation receipt.

    Will the Add-A-Cool unit harm my existing unit?
    The Add-A-Cool is designed to have minimal impact on air-flow across the condensing coil. Using the Add-A-Cool will have no detrimental impact to your existing unit.

    Why can’t I install it myself?
    The Add-A-Cool, when installed, becomes part of the refrigerant loop piping. To install, the refrigerant from the existing system must be removed and recovered. After installation, the refrigerant “charge” must be increased slightly to accommodate the internal volume of the Add-A-Cool piping as well as the additional piping required for installation. Your professional A/C Technician is best qualified to accomplish this.

    Is Add-A-Cool safe?
    Add-A-Cool units are UL Rated to an ultimate burst pressure of 2500PSI (one of the highest ratings in the industry).Because of the durability built into each Add-A-Cool unit , you will enjoy many years of trouble free and worry free service.

    Where is the Add-A-Cool made?
    All Add-A-Cool units are made in the United States of America by Bois D’arc International Inc. a leading manufacturer of HVAC heat exchanger coils. Bois D’arc International Inc. stands behind its products and backs this unit with an exclusive 5 year limited warranty. You are free to contact Bois D’arc International Inc. directly at 1-800-752-7135 if you have questions or comments.

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    Add-A-Cool™
    RESIDENTIAL UTILIZATION ECONOMIC BENEFIT

    8680KWH TYPICAL POWER USUAGE FOR HVAC

    6% SAVINGS= 694.4KWH
    $0.23 COST FACTOR PER KWH
    NET UTILITY SAVINGS=$159.71 ANNUALLY


    Add-A-Cool™
    NATIONWIDE IMPACT INCLUDING COMMERCIAL UTILIZATION

    (1GWH=1,000,000 KWH)

    2005 GENERATION 4,054,688GWH WITH 1,256,953GWH USED FOR HVAC
    6% AVERAGE SAVINGS= 75,417.18GWH
    CONVERTS TO 75,417,180,000KWH
    75,417,180,000 X $0.23=$17,345,951,400.00 ECONOMIC IMPACT (SAVINGS) TO
    UNITED STATES ECONOMY

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    Add-A-Cool™
    CO2 EMISSION REDUCTION
    THROUGH ENERGY SAVINGS

    CO2 FACTOR USED: 1,000,000 TONS CO2 GENERATED FOR EVERY 1GWH OF ELECTRICITY GENERATED USING FOSSIL FUELS

    BY USING THE Add-A-Cool™, A POTENTIAL ENERGY SAVINGS OF 6% OR 75,417.18GWH CAN BE REALIZED NATIONWIDE.71.4% (average) OF ELECTRICAL POWER IS GENERATED USING FOSSIL FUELS.
    75,417.18 X 71.4%= 53,847.86GWH
    53,847.86 X 1,000,000 TONS CO2=
    53,847,866,520 TONS CO2
    NOT DISCHARGED INTO THE ATMOSPHERE

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    Add-A-Cool™
    Installation Instructions

    AND

    Add-A-Cool™
    System Applications


    Best results are obtained in systems using a thermostatic expansion valve for the evaporator metering device.
    Add-A-Cool is not designed for use in a system in which the evaporator coil utilizes a capillary tube feed system nor is it designed for use in a system with less than 12,000 BTU capacity that uses a piston type feed system for the evaporator coil.


    To Install the Add-A-Cool™

    1) Isolate and lock-out power to condensing unit.

    2) With the supplied wire ties, attach the Add-A-Cool unit either to the face of the existing condensing coil or to the protective shroud covering the existing coil; with the tube connection points of the Add-A-Cool pointed toward the existing gas and liquid lines of the condensing unit. The Add-A-Cool must be mounted in such a manner that the connection tubes are parallel to the ground and the entire Add-A-Cool unit is in the air stream of the existing coil. (See diagram)

    3) Remove and recover the refrigerant charge.

    4) Locate liquid refrigerant supply line where it leaves the condensing unit. There should be 2 copper lines leaving the condensing unit; the liquid refrigerant line will be the smaller of the 2 lines.

    5) Where it is easily accessible, cut and remove a 4 inch section of the liquid refrigerant line.

    6) Clean and prep the ends of the tubing you cut as well as the connection points of the Add-A-Cool.

    WARNING!! USE ONLY A MINIMUM OF 5% SILVER SOLDER WHEN SOLDERING REFRIGERATION PIPING JOINTS!!!!

    7) Solder a section of .375 x .028 copper refrigeration tubing from the existing refrigerant line as it leaves the condensing unit to the upper connection point of the Add-A-Cool unit.

    8) Solder a section of .375 x .028 copper refrigeration tubing from the lower connection point of the Add-A-Cool unit to the existing refrigerant line where it continues its run to the evaporator coil (the other side of the 4 inch section you removed).

    9) Check for leaks, if no leaks are found, pull the system into a deep vacuum per your Company’s guidelines.

    10) After evacuating the system, re-charge the system with the correct amount and type of refrigerant. The Add-A-Cool unit and the associated piping you installed will require additional refrigerant. Average calculations put this amount at approximately 1 pound.

    11) Double check, using a refrigerant leak detector, for leaks.

    12) If all is OK, remove lockout device and re-energize condensing unit.

    13) Place system in operation and verify correct operating parameters of condensing unit and evaporator coil.


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