RDS/JDJ/2022 residential associated zones

[JacksonJ-KC]

residential associated HVAC zone: any HVAC zone that primarily includes nonresidential spaces designed to serve occupants of residential spaces, including but not limited to corridors, stairwells, elevator lobbies, and common restrooms, on a floor where over 75% of the gross conditioned floor area are residential spaces. This definition does not apply to HVAC zones within hospitals.

This will be important in determining the predominant nonresidential building area type

a. Determine the combined area of the gross conditioned floor area and semiheated floor area of each of
the following building area types in the proposed design:

1. Residential. HVAC zones that include dwelling units, guest rooms, living quarters, private living
   spaces, and sleeping quarters, and residential associated HVAC zones shall be classified as residen-tial.
   Other space types, including patient rooms in hospitals, shall not be classified as residential.

b. Classify the nonresidential building area type with the largest combined area from Section G3.2.1.1(a) as
the predominant nonresidential building area type. Add the combined area of any remaining nonresiden-tial
building area types with less than 20,000 ft2 to the combined area of the predominant nonresidential
building area type.

c. Select a baseline HVAC system type from Table G3.1.1-3 for each of the following building area types
included in the proposed design:

1. Residential based on Section G3.2.1.1(a)
2. Predominant nonresidential based on Section G3.2.1.1(b)
3. Each additional nonresidential building area type with more than 20,000 ft2 of combined area based
   on Section G3.2.1.1(a)

This will also be used in the determination of expected baseline system type as follows:

Residential associated HVAC zones shall use system type 3 or 4 based on climate zone.

[JacksonJ-KC]

@weilixu I believe that the python code associated with this rds was already merged