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Superheat charging table is derived from optimum performance point. (95_F [35_C] outdoor ambient and (80_F [27_C] dry bulb; 67_F [19_C] wet bulb indoor
condition.) Where a dash( --- ---) appears do not attempt to check charge or charge unit under these conditions using the superheat method. (Weigh in method
should be used.)
To properly check or adjust charge, conditions must be favorable for subcooling charging. Favorable conditions exist when the outdoor temperature is between
75_F to 115_F (24_C and 46_C), and the indoor temperature is between 70_F and 80_F (21_C and 27_C). Follow the procedure above.
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Fig. 17 - - Cooling Charging Chart
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