Expand IDF bug with HVACTemplate:System:DedicatedOutdoorAir for Heat Recovery Type 'Enthalpy' (v24.2) #10895
Description
Setting Heat Recovery Type to Enthalpy in the HVACTemplate:System:DedicatedOutdoorAir template yields an error with some configurations:
** Severe ** Duplicate name found for object of type "Table:IndependentVariable" named "DOAS airFlowRatio". Overwriting existing object.
** Severe ** Duplicate name found for object of type "Table:IndependentVariableList" named "DOAS effIndVarList". Overwriting existing object.
** Severe ** Duplicate name found for object of type "Table:Lookup" named "DOAS SenEffectivenessTable". Overwriting existing object.
Reviewing the expidf and indeed duplicate tables are found.
Here is the object:
HVACTemplate:System:DedicatedOutdoorAir,
DOAS, !- Name
Always On, !- System Availability Schedule Name
DirectIntoZone, !- Air Outlet Type
autosize, !- Supply Fan Flow Rate {m3/s}
0.7, !- Supply Fan Total Efficiency
1000, !- Supply Fan Delta Pressure {Pa}
0.9, !- Supply Fan Motor Efficiency
1, !- Supply Fan Motor in Air Stream Fraction
DrawThrough, !- Supply Fan Placement
HeatExchangerAssistedDX, !- Cooling Coil Type
ALWAYS OFF DOAS, !- Cooling Coil Availability Schedule Name
FixedSetpoint, !- Cooling Coil Setpoint Control Type
12.8, !- Cooling Coil Design Setpoint {C}
, !- Cooling Coil Setpoint Schedule Name
15.6, !- Cooling Coil Setpoint at Outdoor Dry-Bulb Low {C}
15.6, !- Cooling Coil Reset Outdoor Dry-Bulb Low {C}
12.8, !- Cooling Coil Setpoint at Outdoor Dry-Bulb High {C}
23.3, !- Cooling Coil Reset Outdoor Dry-Bulb High {C}
autosize, !- DX Cooling Coil Gross Rated Total Capacity {W}
autosize, !- DX Cooling Coil Gross Rated Sensible Heat Ratio
3, !- DX Cooling Coil Gross Rated COP {W/W}
Electric, !- Heating Coil Type
ALWAYS OFF DOAS, !- Heating Coil Availability Schedule Name
FixedSetpoint, !- Heating Coil Setpoint Control Type
12.2, !- Heating Coil Design Setpoint {C}
, !- Heating Coil Setpoint Schedule Name
15, !- Heating Coil Setpoint at Outdoor Dry-Bulb Low {C}
7.8, !- Heating Coil Reset Outdoor Dry-Bulb Low {C}
12.2, !- Heating Coil Setpoint at Outdoor Dry-Bulb High {C}
12.2, !- Heating Coil Reset Outdoor Dry-Bulb High {C}
0.8, !- Gas Heating Coil Efficiency
, !- Gas Heating Coil Parasitic Electric Load {W}
**Enthalpy, !- Heat Recovery Type**
0.7, !- Heat Recovery Sensible Effectiveness
0.65, !- Heat Recovery Latent Effectiveness
Plate, !- Heat Recovery Heat Exchanger Type
MinimumExhaustTemperature, !- Heat Recovery Frost Control Type
None, !- Dehumidification Control Type
0.00924, !- Dehumidification Setpoint {kgWater/kgDryAir}
None, !- Humidifier Type
, !- Humidifier Availability Schedule Name
0.000001, !- Humidifier Rated Capacity {m3/s}
2690, !- Humidifier Rated Electric Power {W}
0.003, !- Humidifier Constant Setpoint {kgWater/kgDryAir}
, !- Dehumidification Setpoint Schedule Name
; !- Humidifier Setpoint Schedule Name
Setting the Heat Recovery Type to 'None' makes the error go away.
File is attached for reproducibility of bug (single zone example).