This was for generating higher fan speeds in the air conditioning mode. When you added air conditioning, you had to change the blower motor and installed a fan center on the furnace. The only R rating we were concerned with then was at the movies (bad joke about thermal resistance). The formula worked well for the old 8 SEER systems. The nearest 1/2 ton to 20400 would be 24,000 btu/hr or 2 tons of cooling. This dates me, but I remember when you installed or replaced an air conditioning system for a house, you took the square footage of the building, times it by 12, added 6000, and rounded it up to the nearest 1/2 ton (6000 btu/h). HVAC Software: When You Replace An HVAC System, A Load Calculation Should Be Done A properly sized HVAC system, combined with a seasonal service check, will provide years of efficient operation. Most software versions offer instructions on inputting data. Most computerized versions provide input values for an easier and faster calculation. This heat and cooling load calculation, developed by Air Conditioning Contractors of America (ACCA), can be manually or computer calculated. What is the best heating and cooling load calculation for a home?įor residential homes, the best method of calculating heat loss/gain is called a Manual J.
0 Comments
Leave a Reply. |