Merge pull request #448 from cse-sim/heat-exchange-models-hpwh

Enable HPWHsim heat-exchange models

Author: nealkruis

doc/src/records/dhwheater-doc.md

@@ -351,6 +351,7 @@ Air source heat pump type, valid only if whHeatSrc=ASHPX. These choices are supp
 "Rheem_HPHD135VNU_MP","Rheem HPHD135 MP external MP HPWHs"
 "Scalable_SP","single pass scalable type for autosized standard design"
 "Scalable_MP","multipass scalable type for autosized standard design"
+"AquaThermAire","Vallara AquaThermAire HPWH"
 END
 %>
 

src/CNDTYPES.DEF

@@ -521,6 +521,9 @@ PIPESEGP -- "class PIPESEG*"
 
 			SCALABLE_SP "Scalable_SP"		// single pass scalable type for autosized standard design
 			SCALABLE_MP "Scalable_MP"		// multipass scalable type for autosized standard design
+
+			AQUATHERMAIRE "AquaThermAire"		// heat-exchange model
+
 		}
 
 *choicb WHRESTYCH {			// resistance heater types