Difference in pressure | 
                           
| QName | Type | Fixed | Default | Use | Inheritable | Annotation | |
|---|---|---|---|---|---|---|---|
| conditioningType | conditioningTypeEnum | optional | 
                                    
  | 
                              ||||
| hydronicLoopIdRef | xsd:IDREF | optional | |||||
| hydronicLoopType | loopTypeEnum | optional | |||||
| performanceId | xsd:IDREF | optional | 
                                    
  |