ZERH and ENERGY STAR Update: Reference Design HVAC Fuel Type Bugfix

[bpark1327]

Pull Request Description

HVAC system's fuel type(s) shall be same as Rated Home, including any dual-fuel equipment where applicable.

Checklist

Not all may apply:

• OS-HPXML git subtree has been pulled
• 301validator.xml has been updated (reference EPvalidator.xml)
• Sample files have been added/updated (openstudio tasks.rb update_hpxmls)
• Tests have been added/updated (e.g., rulesets\tests and/or workflow/tests/*_test.rb)
• Documentation has been updated
• Changelog has been updated
• openstudio tasks.rb update_measures has been run
• No unexpected changes to simulation results on CI

[bpark1327]

I tested with the base-hvac-dual-fuel-air-to-air-heat-pump-1-speed-lockout-temperatures model. After the bug fix, the ES Target Home now retains the dual-fuel heat pump system type from the Rated Home. The difference in the ERI scores before and after the bug fix is minimal. as shown below.

	before	after
Reference Home ERI	52	52.11
SAF (Size Adjustment Factor)	1	1
SAF Adjusted ERI Target	52	52.11
Rated Home ERI	80.97	80.97
Rated Home ERI w/o OPP	80.97	80.97

[shorowit]

Let's also check how this affects the original issue raised by BSI.

[bpark1327]

Let's also check how this affects the original issue raised by BSI.

Received two HPXML files from BSI.
269820-03-27-2025T10-03_28-ESReference-ERIRatedHome.xml.txt
269820-03-27-2025T10-03_28-ERIRatedHome.xml.txt

[shorowit]

Looks good, thanks @bpark1327!