User manual

FAQ for CBECC-Res 2013
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If the units have different capacities, change the # of unique heat pump types to whatever # is correct,
e.g., 2 and select the tab Heat Pump Equipment and enter the information on the screen that looks like
MORE MULTI-FAMILY MODELING HINTS
Second Floor Zone Information
The HVAC system for the second floor zone is called HVAC System 2 and uses the same DHW System 1
(see below for DHW details).
Pay special attention to the mathematics of ceiling height, floor to floor and bottom value. If they do not
add up correctly, the software will not run. Typically, the floor to floor value is the ceiling height plus 1
foot. But do not forget to add the distance from the soil to the surface of floor 1, which for our example
is 0.7 for the first floor zone. So the second floor zone, the value for Bottom is 9.7. NOTE: the number of
stories is 1 because it is the number of stories in the zone rather than the dwelling unit.