diff --git a/HPXMLtoOpenStudio/measure.xml b/HPXMLtoOpenStudio/measure.xml
index 9e34ced82a..76ba0c2879 100644
--- a/HPXMLtoOpenStudio/measure.xml
+++ b/HPXMLtoOpenStudio/measure.xml
@@ -3,8 +3,8 @@
   <schema_version>3.1</schema_version>
   <name>hpxm_lto_openstudio</name>
   <uid>b1543b30-9465-45ff-ba04-1d1f85e763bc</uid>
-  <version_id>441f9a3f-8b7f-4b51-87b8-fc22b13ec262</version_id>
-  <version_modified>2023-11-13T22:10:19Z</version_modified>
+  <version_id>0b0fdd93-375d-48a7-94c7-141c1253acfc</version_id>
+  <version_modified>2023-11-14T04:26:24Z</version_modified>
   <xml_checksum>D8922A73</xml_checksum>
   <class_name>HPXMLtoOpenStudio</class_name>
   <display_name>HPXML to OpenStudio Translator</display_name>
@@ -222,6 +222,18 @@
       <usage_type>resource</usage_type>
       <checksum>63C6A1E2</checksum>
     </file>
+    <file>
+      <filename>data/g_functions/README.md</filename>
+      <filetype>md</filetype>
+      <usage_type>resource</usage_type>
+      <checksum>3A6546AB</checksum>
+    </file>
+    <file>
+      <filename>data/g_functions/rectangle_5m_v1.0.json</filename>
+      <filetype>json</filetype>
+      <usage_type>resource</usage_type>
+      <checksum>25FFB6A8</checksum>
+    </file>
     <file>
       <filename>data/unavailable_periods.csv</filename>
       <filetype>csv</filetype>
@@ -262,7 +274,7 @@
       <filename>hpxml_defaults.rb</filename>
       <filetype>rb</filetype>
       <usage_type>resource</usage_type>
-      <checksum>43023BAC</checksum>
+      <checksum>9C9F94F7</checksum>
     </file>
     <file>
       <filename>hpxml_schema/HPXML.xsd</filename>
diff --git a/HPXMLtoOpenStudio/resources/hpxml_defaults.rb b/HPXMLtoOpenStudio/resources/hpxml_defaults.rb
index e531731d1a..2525eececb 100644
--- a/HPXMLtoOpenStudio/resources/hpxml_defaults.rb
+++ b/HPXMLtoOpenStudio/resources/hpxml_defaults.rb
@@ -1523,9 +1523,9 @@ def self.apply_detailed_performance_data_for_var_speed_systems(hpxml_bldg)
         HVAC.set_cool_detailed_performance_data(hvac_system)
       else
         # override some properties based on detailed performance data
-        cool_rated_capacity = hvac_system.cooling_capacity
-        cool_max_capacity = hvac_system.cooling_detailed_performance_data.find { |dp| (dp.outdoor_temperature == HVAC::AirSourceCoolRatedODB) && (dp.capacity_description == HPXML::CapacityDescriptionMaximum) }.capacity
-        cool_min_capacity = hvac_system.cooling_detailed_performance_data.find { |dp| (dp.outdoor_temperature == HVAC::AirSourceCoolRatedODB) && (dp.capacity_description == HPXML::CapacityDescriptionMinimum) }.capacity
+        cool_rated_capacity = [hvac_system.cooling_capacity, 1.0].max
+        cool_max_capacity = [hvac_system.cooling_detailed_performance_data.find { |dp| (dp.outdoor_temperature == HVAC::AirSourceCoolRatedODB) && (dp.capacity_description == HPXML::CapacityDescriptionMaximum) }.capacity, 1.0].max
+        cool_min_capacity = [hvac_system.cooling_detailed_performance_data.find { |dp| (dp.outdoor_temperature == HVAC::AirSourceCoolRatedODB) && (dp.capacity_description == HPXML::CapacityDescriptionMinimum) }.capacity, 1.0].max
         hvac_ap.cool_capacity_ratios = [cool_min_capacity / cool_rated_capacity, cool_max_capacity / cool_rated_capacity]
         hvac_ap.cool_fan_speed_ratios = HVAC.calc_fan_speed_ratios(hvac_ap.cool_capacity_ratios, hvac_ap.cool_rated_cfm_per_ton, hvac_ap.cool_rated_airflow_rate)
       end
@@ -1534,9 +1534,9 @@ def self.apply_detailed_performance_data_for_var_speed_systems(hpxml_bldg)
           HVAC.set_heat_detailed_performance_data(hvac_system)
         else
           # override some properties based on detailed performance data
-          heat_rated_capacity = hvac_system.heating_capacity
-          heat_max_capacity = hvac_system.heating_detailed_performance_data.find { |dp| (dp.outdoor_temperature == HVAC::AirSourceHeatRatedODB) && (dp.capacity_description == HPXML::CapacityDescriptionMaximum) }.capacity
-          heat_min_capacity = hvac_system.heating_detailed_performance_data.find { |dp| (dp.outdoor_temperature == HVAC::AirSourceHeatRatedODB) && (dp.capacity_description == HPXML::CapacityDescriptionMinimum) }.capacity
+          heat_rated_capacity = [hvac_system.heating_capacity, 1.0].max
+          heat_max_capacity = [hvac_system.heating_detailed_performance_data.find { |dp| (dp.outdoor_temperature == HVAC::AirSourceHeatRatedODB) && (dp.capacity_description == HPXML::CapacityDescriptionMaximum) }.capacity, 1.0].max
+          heat_min_capacity = [hvac_system.heating_detailed_performance_data.find { |dp| (dp.outdoor_temperature == HVAC::AirSourceHeatRatedODB) && (dp.capacity_description == HPXML::CapacityDescriptionMinimum) }.capacity, 1.0].max
           hvac_ap.heat_capacity_ratios = [heat_min_capacity / heat_rated_capacity, heat_max_capacity / heat_rated_capacity]
           hvac_ap.heat_fan_speed_ratios = HVAC.calc_fan_speed_ratios(hvac_ap.heat_capacity_ratios, hvac_ap.heat_rated_cfm_per_ton, hvac_ap.heat_rated_airflow_rate)
         end