I configured a single family home with garage/semi-conditioned space under living space in CT. The living space has 25,000 BTU/hr of heating capacity from a minisplit. Yet, when reviewing the DataViewer outputs, only ~12-13,000 BTU/hr of heating is delivered and results in Unmet Hours. While the specified MSHP product has appropriate HSPF, SEER, and maximum capacities, I cannot identify the actual sizing specified. The Option Description uses the Sizing Methodology for ACCA, which states "...while taking into account the heat pump's reduced capacity at the design temperature." Many of the products on the market, rated as EnergySTAR Cold Climate heat pumps have enhanced low-temperature performance that could certainly exceed this existing ACCA calculation.
Is there a method to 1) observe the calculation limits, 2) modify these limits per Option, and/or 3) modify these limits consistently across Options within a BEOpt library?
I am running BEOpt 3.0.1 on Windows 11, using this file and these outputs.
