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    SIZING CONDENSER TO EVAPORATOR

    HS-66EC Evaporator

    MANY TIMES WE GET THE QUESTIONS, "HOW DO YOU SIZE THE CONDENSER WITH YOUR EVAPORATOR?".

    HERE ARE SOME HELPFUL GUIDELINES WHEN SIZING.

     

    • SELECT CONDENSING UNIT WITH A LOWER CAPACITY THAN THE EVAPORATOR    ( 90% to 100% OF EVAPORATOR )
    • DESIGN POINT - 38° SST (USE 40°F FOR SIZING PURPOSES) IF RUNNING ROOM AT 55° 
    • GOLDILOCKS TYPE OF CONDITIONS
      • USE A GOOD AVERAGE TEMPERATURE  NOT WORST CASE SCENARIO   
      • ON HOT DAYS JUST LET THE SYSTEM RUN A LITTLE LONGER FOR THE OUT OF BOUNDS CONDITIONS
        • ROOMS ARE SIZED FOR 16 HOUR RUN DAY
      • LOAD ON EVAPORATOR IS CONSTANT- ITS THE CONDENSING UNIT THAT NEEDS TO RUN A LITTLE LONGER
      • SIZE TO A REASONABLE AMBIENT TEMPERATURE
        • IS IT INSIDE?
        • IS IT OUTSIDE?
        • EXAMPLES
          • SAN DIEGO- SIZE FOR 80° NOT 110°
          • PALM SPRINGS- SIZE FOR 100° OR SO AND LET IT RUN LONGER ON THE HOTTEST TIMES OF THE YEAR
      • PUT A FAN CYCLING SWITCH ON THE CU TO KEEP THE HEAD PRESSURE UP TO 80° OR BETTER AMBIENT CONDITIONS TO PROTECT DURING LOW AMBIENT TIMES.
      • CONDENSING UNIT SHOULD HAVE A SUCTION ACCUMULATOR

    SO TO SUM IT ALL UP: SIZE AT A SLIGHTLY LOWER LOAD THAN WHAT THE ROOM IS, AT A PLUS 40° SST, AT A REASONABLE AMBIENT TEMPERATURE.