Remove minimum limits for Heat Pump Heating Minimum Outdoor Dry-Bulb Temperature to match E+

[jmarrec]

cf NREL/EnergyPlus#7437. E+ IDD was changed around E+ 8.8.0 to remove some compressor OAT limits. OpenStudio is out of sync with these changes (and probably a ton more).

OpenStudio.idd

OS:Coil:Heating:DX:SingleSpeed,
[...]
  N5, \field Minimum Outdoor Dry-Bulb Temperature for Compressor Operation
       \type real
       \units C
       \minimum -20
       \default -8.0

ProposedEnergy+.idd:

Coil:Heating:DX:SingleSpeed,
[...]
  N5 , \field Minimum Outdoor Dry-Bulb Temperature for Compressor Operation
       \type real
       \minimum -20.0
       \default -8.0
       \units C

---

E+:

Coil:Heating:DX:SingleSpeed,
[...]
  N5 , \field Minimum Outdoor Dry-Bulb Temperature for Compressor Operation
       \type real
       \default -8.0
       \units C

[jmarrec]

Fix in current develop

  N5, \field Minimum Outdoor Dry-Bulb Temperature for Compressor Operation
       \type real
       \units C
       \default -8.0
  N6, \field Maximum Outdoor Dry-Bulb Temperature for Defrost Operation