ASHRAE-90.1-2022- - Page 323

Extracted Content

lated fan hp by the minimum motor efficiency prescribed by Section 10.4.1 for the appropriate motor size for each fan. Exception to G3.3.2.8(d): When a proposed design includes energy recovery but it is not required in

the baseline building design per Section 6.5.6, the fan power of the baseline system shall be equal to either the proposed design system or the fan power limit in Section 6.5.3.1 calculated without fan power credit for energy recovery, whichever is less. e. The equipment capacities for the baseline design shall be sized proportionally to the capacities in the

proposed design based on sizing runs—i.e., the ratio between the capacities used in the annual simulations and the capacities determined by the sizing runs shall be the same for both the proposed design and budget building design .

G3.3.2.9 Service Water Heating Systems. Service water heating systems shall be modeled as meeting Section 7.1.4. Service water heating energy use can be documented to be reduced as allowed in Table G3.1(11) Baseline Building Performance column exceptions to (g).

ANSI/ASHRAE/IES Standard 90.1-2022 (I-P) 321