Budget System Types 3, 6, 9 and 11 efficiencies taken from Table 6.8.1-1 through 6.8.1-4 shall be based on the cooling equipment capacity of a single floor when grouping identical floors in accordance with Table 11.5.1. Where multiple HVAC zones are combined into a single thermal block in accordance with Table 11.5.1, the efficiencies for the budget System Types 6, 8, and 10 taken from Tables 6.8.1-1 through 6.8.1-4, shall be based on 9,000 Btu/hr equipment capacity for residential spaces otherwise, it shall be based on the capacity of the thermal block divided by the number of HVAC zones. Using the equation for the applicable performance rating as indicated in Tables 6.8.1-1 through 6.8.1-4. For Budget System Types 3, 4, 6, 9, and 11, calculate the minimum COP Where efficiency ratings include supply fan energy, the efficiency rating shall be adjusted to remove the supply fan energy.
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