A user may combine systems or any input for that matter that are identical and whose requirements do not mandate that detailed inputs be used. When combining inputs, be sure to keep track of the multipliers and that your floor levels are being reported correctly. The criteria in this case would be that the systems serve zones that are thermally identical. An example of this would be a core zone of a building. Five different orientations would not meet this criteria. Consult the CEC’s Residential and Nonresidential Manual for information on the depth of detailed information that may be required for the situation in question.
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