Review HP rating temperature

[fergusoa]

HTAP hard-codes the HP rating temperature to -5ºC; which is fine as long as users have provided the corresponding COP. Many may assume that this actually means 8.3ºC - If they provide a higher-than-expected COP, the heat pump model will overpredict performance and underpredict energy use.

To Do:

• Decide what default rating temperature makes most sense
• Review current COP data and determine what values are supposed to be used
• Incorporate MaRS/ICF study changes.

[fergusoa]

Relevant code is found at substutute-h2k.rb ~ around line 2580

`
# CHECK this - should be 8.3 ?

  locationText = "HouseFile/House/HeatingCooling/Type2/AirHeatPump/Temperature/RatingType"
  elements[locationText].attributes["code"] = "1"
  elements[locationText].attributes["value"] = "-5.0"
  elements[locationText].add_element("English")
  elements[locationText].add_element("French")

`