Table 352: Economizer – Values and References Term Unit Values Source , Savings factor; Annual cooling load savings per unit area of conditioned space in the building when compared with a 0.002 1 baseline HVAC system with no economizer. , Area of conditioned space served by controlled unit ft2 EDC Data Gathering , Free cooling hours with outdoor temperature between 60 and 70 F. Typical operating hour conditions are defined See Table 353 2 below with standard climate zones for PA. EDC Data Gathering , Efficiency of existing HVAC equipment. Depending on the size and age, this will either be the SEER, IEER, or EER 3 Default: See Table (use EER only if SEER or IEER are not available) 354 Table 353: FCHr for PA Climate Zones and Various Operating Conditions Location FCHr by Operating Schedule 1 Shift, 5 2 Shift, 5 3 Shift, 5 Operating Schedule days per days per days per 24/7 week week week Allentown 419 653 1057 1688 Erie 384 606 977 1563 Harrisburg 377 605 1000 1746 Philadelphia 413 634 1050 1694 401 603 947 1622 Pittsburgh Scranton 465 705 1117 1787 Williamsport 383 605 1004 1682
Table 352: Economizer – Values and References Term Unit Values Source , Savings factor; Annual cooling load savings per unit area of conditioned space in the building when compared with a baseline HVAC system with no economizer. 0.002 1 , Area of conditioned space served by controlled unit ft2 EDC Data Gathering , Free cooling hours with outdoor temperature between 60 and 70 F. Typical operating hour conditions are defined below with standard climate zones for PA. See Table 353 2 , Efficiency of existing HVAC equipment. Depending on the size and age, this will either be the SEER, IEER, or EER (use EER only if SEER or IEER are not available) EDC Data Gathering Default: See Table 354 3 Table 353: FCHr for PA Climate Zones and Various Operating Conditions Location FCHr by Operating Schedule Operating Schedule 1 Shift, 5 days per week 2 Shift, 5 days per week 3 Shift, 5 days per week 24/7 Allentown 419 653 1057 1688 Erie 384 606 977 1563 Harrisburg 377 605 1000 1746 Philadelphia 413 634 1050 1694 Pittsburgh 401 603 947 1622 Scranton 465 705 1117 1787 Williamsport 383 605 1004 1682
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