Hvac Drain Line Size
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Hvac Talk Heating Air Refrigeration Discussion
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Hvac Talk Heating Air Refrigeration Discussion
Hvac Talk Heating Air Refrigeration Discussion
Slope the drain shall have a slope of not less than 1 8 inch per foot and shall be approved corrosion resistant pipe not less in size than 3 4 of an inch for air cooling coils and not less than the drain outlet size for evaporative coolers or other equipment.
Hvac drain line size. At 150 equivalent feet a 1 2 line would be required for the same load point b. Imc 307 2 2 tells us that an a c condensate drain inside diameter should not be smaller than 3 4 and should not be smaller than the drain pan outlet diameter. Carson dunlop associates sketches left illustrate both acceptable and not recommended locations for the discharge of an air conditioner or heat pump condensate drain line discharge. The code book says the size of the pipe is for one or a combination of units or as recommended by the manufacturer.
Clean out your drain line with bleach in early springtime each year to kill mold and mildew and prevent future clogs. Uniform mechanical code section 310 0 310 1 condensate disposal. This will kill any algae mold or mildew that has formed in the pipe. 3 4 is sufficient for up to 20 tons according to the imc unless the drain outlet size is larger than 3 4.
Public way condensate or wastewater shall not drain over a public way. If you re planning to tie two evaporator drains into one single drain line they may want you to increase the size of the final pipe going to the outside. To clear these clogs you will need to suck them out with a wet dry vac. The line sizes given on the specification sheets are based on a 5 pound pressure drop for the entire piping run from 50 to 250.
Plumbing code citation for installation of air conditioning condensate drain piping. Drain s 2015 imc 307 2 2 requires that an air conditioning condensate drain inside diameter should not be smaller than in ch and should not be smaller than the drain pan outlet diameter. Three quarters of an inch is sufficient for up to 20 tons according to the imc unless the drain outlet size is larger than in ch use t able 307 2 2 for condensate pipe sizing. A 25 000 btuh load will require a 3 8 line for 100 equivalent feet point a.
If the condensate drain line is clogged you will need to use a wet dry vacuum or a special pump to unclog the line. A liquid line size.
Hvac Talk Heating Air Refrigeration Discussion
Hvac Talk Heating Air Refrigeration Discussion
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Hvac Talk Heating Air Refrigeration Discussion
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