I'm trying to simulate a system with chilled water storage (using EnergyPlus 3.0). I'm starting from the example file 5ZoneVAV-ChilledWaterStorage-Mixed.idf, which runs fine. I tried removing the service hot water system from the example file (I deleted the wateruse:equipment and wateruse:connections objects for each zone and all of the SHWSys1 loop - from line 4628 to line 4956 in the unedited example), but when I try to run it I get the following errors:
** Severe ** GetStandardMeterResourceType: Illegal OutResourceType (for Meters) Entered=
** ~~~ ** Invalid Meter spec for variable=:Water Heater Consumption [J]
** Severe ** GetStandardMeterResourceType: Illegal OutResourceType (for Meters) Entered=
** ~~~ ** Invalid Meter spec for variable=:Water Heater Off-Cycle Parasitic Consumption [J]
** Severe ** GetStandardMeterResourceType: Illegal OutResourceType (for Meters) Entered=
** ~~~ ** Invalid Meter spec for variable=:Water Heater On-Cycle Parasitic Consumption [J]
The errors are a bit strange because there is no Water Heater object in the file once I have deleted the SHWSys1 loop and associated branches. These errors occur even if I remove all of the output:variable and report objects. Any idea what's causing this?