HVAC autosizing and add/replace fixes

[joseph-robertson]

• When a model has both a central system and non central system, don't autosize the non central system (e.g., central boiler with room ac)
• Cannot have heating-only fan coil anymore; the ZoneHVACUnitHeater object was not being autosized correctly and was resulting in zero heating energy
• Don't remove the cooling-only fan coil when applying a heating-only non central system (e.g., cooling-only fan coil with furnace)

[codecov-io]

Codecov Report

Merging #263 into master will decrease coverage by 0.02%.
The diff coverage is 89.74%.

@@            Coverage Diff             @@
##           master     #263      +/-   ##
==========================================
- Coverage   93.13%   93.11%   -0.03%     
==========================================
  Files         165      165              
  Lines       47686    47672      -14     
==========================================
- Hits        44413    44389      -24     
- Misses       3273     3283      +10

Impacted Files	Coverage Δ
...urces/measures/HPXMLtoOpenStudio/resources/util.rb	63.08% <0%> (-0.47%)	⬇️
...Baseboard/tests/process_electric_baseboard_test.rb	100% <100%> (ø)	⬆️
...alHVACUnitHeater/tests/process_unit_heater_test.rb	99.56% <100%> (ø)	⬆️
...ocess_single_speed_central_air_conditioner_test.rb	100% <100%> (ø)	⬆️
...s/process_central_system_boiler_baseboards_test.rb	100% <100%> (ø)	⬆️
...cess_ground_source_heat_pump_vertical_bore_test.rb	99.7% <100%> (ø)	⬆️
...sidentialHVACFurnace/tests/process_furnace_test.rb	100% <100%> (ø)	⬆️
...Coil/tests/process_central_system_fan_coil_test.rb	91.8% <100%> (-8.2%)	⬇️
...itioner/tests/process_room_air_conditioner_test.rb	100% <100%> (ø)	⬆️
.../process_single_speed_air_source_heat_pump_test.rb	100% <100%> (ø)	⬆️
... and 13 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 8013603...6cd30a9. Read the comment docs.

[joseph-robertson]

• BoilerBaseboards + CentralAC/RoomAC: cooling comes way down, especially for CentralAC

[joseph-robertson]

• Appears to be a bug where FanCoilHeatingOnly consumes no heating energy. I'm planning to send Jeff an idf to investigate.

[joseph-robertson]

Regression tests:

• master.csv.txt
• autosize-fix.csv.txt

[afontani]

@joseph-robertson Thanks for catching these bugs. I have looked at the scenarios that apply to the LA projects, and the number of "shared" systems is not that large. As a result, the scenarios that these situations should show up in these projects are also small.