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.. [#] ``propertyUse`` options are “single-family detached”, “single-family attached”, or “manufactured home”
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.. [#] ``propertyUse`` is an advanced field. Overriding the existing property use may produce in abnormal model results. If you set this, we recommend setting square footage as well.
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.. _cost:
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@@ -217,18 +220,19 @@ Property Type Units Constraints Required Defa
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Attics
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~~~~~~
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The attic is entered in ``...building.enclosure.attics``. Currently, this array must contain exactly 1 attic object. If there is no attic present in house, set ``area`` to 0.
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See note about `objects and arrays`_ for more information.
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The attic is entered in ``...building.enclosure.attics``. Currently, this array must contain exactly 1 attic object. See note about `objects and arrays`_ for more information.
.. [#] ``type`` choices are "basement conditioned", "basement unconditioned", "crawl vented", "crawl unvented", "slab", and "pier and beam".
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.. [#] ``type`` choices are "basement conditioned", "basement unconditioned", "crawl vented", "crawl unvented", "slab", and "belly and wing".
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Walls
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~~~~~
@@ -365,7 +369,7 @@ Property Type Units Constra
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.. [#] If ``systemType`` is "central air conditioner"
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.. [#] ``systemType`` choices are "central air conditioner", "room air conditioner", "evaporative cooler", "packaged terminal air conditioner", and "mini-split".
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.. [#] ``compressorType`` choices are "single stage", "two stage", and "variable speed".
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.. [#] ``coolEfficiencyUnits`` choices are "percent", "EER", "CEER", and "SEER". The option to use "SEER2" is planned for a future release.
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.. [#] ``coolEfficiencyUnits`` choices are "fraction", "EER", "CEER", "SEER", and "SEER2".
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HVAC Heating Systems
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~~~~~~~~~~~~~~~~~~~~
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.. [#] Required when ``systemType`` is "furnace" or "boiler".
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.. [#] ``fuel`` choices are "electricity", "natural gas", "fuel oil", "propane", "coal", "wood", and "wood pellets".
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.. [#] ``heatEfficiencyUnits`` choices are "AFUE" and "percent".
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.. [#] ``heatEfficiencyUnits`` choices are "AFUE" and "fraction".
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HVAC Heat Pumps
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~~~~~~~~~~~~~~~
@@ -406,9 +410,9 @@ Property Type Units Constrai
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``heatCapacityBtuPerHour`` float Btu/hr >=0 no autosized by modeling engine if undefined
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``coolCapacityBtuPerHour`` float Btu/hr >=0 no autosized by modeling engine if undefined
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``heatEfficiency`` float Btu/Wh >0 no PSC
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``heatEfficiencyUnits`` string HSPF [#]_ no HSPF
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``heatEfficiencyUnits`` string see [#]_ no HSPF
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``coolEfficiency`` float Btu/Wh >0 no PSC
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``coolEfficiencyUnits`` string SEER [#]_ no SEER
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``coolEfficiencyUnits`` string see [#]_ no SEER
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``heatLoadFraction`` float fraction 0-1 yes 1
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``coolLoadFraction`` float fraction 0-1 yes 1
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``backupSystem`` object yes
@@ -418,8 +422,8 @@ Property Type Units Constrai
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.. [#] Required when ``systemType`` is "air-to-air" or "ground-to-air".
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.. [#] ``systemType`` choices are "mini-split", "air-to-air", and "ground-to-air".
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.. [#] ``compressorType`` choices are "single stage", "two stage", and "variable speed".
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.. [#] The option to use "HSPF2" is planned for a future release.
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.. [#] The option to use "SEER2" is planned for a future release.
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.. [#] ``heatEfficiencyUnits`` choices are "HSPF" and "HSPF2".
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.. [#] ``coolEfficiencyUnits`` choices are "SEER" and "SEER2".
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``backupSystem`` schema for HVAC Heat Pumps:
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@@ -430,15 +434,15 @@ Property Type Units Constrai
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``heatingSwitchoverTemp`` float F no determined by modeling engine if undefined
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``fuel`` string see [#]_ no electricity only applicable if backupSystem.systemType = "integrated"
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``heatEfficiency`` float see ``heatEfficiencyUnit`` 0-1 no 1 only applicable if backupSystem.systemType = "integrated"
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``heatEfficiencyUnits`` string see [#]_ no percent only applicable if backupSystem.systemType = "integrated"
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``heatEfficiencyUnits`` string see [#]_ no fraction only applicable if backupSystem.systemType = "integrated"
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``heatCapacityBtuPerHour`` float Btu/hr >=0 no autosized by modeling engine if undefined, only applicable if backupSystem.systemType = "integrated"
.. [#] If ``location`` not provided, defaults to the first present space type: "basement conditioned", "basement unconditioned", "crawlspace vented", "crawlspace unvented", "attic vented", "attic unvented", "garage", or "living space".
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.. [#] ``leakageUnits`` choices are"CFM25", "CFM50", and "fraction".
.. [#] If ``location`` not provided, defaults to the first present space type: "basement conditioned", "basement unconditioned", "crawlspace conditioned", "crawlspace vented", "crawlspace unvented", "attic vented", "attic unvented", "garage", or "conditioned space".
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HVAC Hydronic Distribution Systems
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -725,20 +729,22 @@ Property Type Units
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``tankVolume`` float gal no
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``dhwLoadFraction`` float fraction 0-1 yes sum of dhwLoadFraction must equal 1
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``heatCapacityBtuPerHour`` float Btu/hr >0 no autosized by modeling engine if undefined
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``energyFactor`` or ``uniformEnergyFactor`` float fraction <1 no BSA
.. [#] ``systemType`` choices are "storage water heater", "instantaneous water heater", "heat pump water heater", "space-heating boiler with storage tank", and "space-heating boiler with tankless coil".
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.. [#] Must reference a defined ``hvacHeatingSystem.id``.
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.. [#] Only required when ``systemType`` is "space-heating boiler with ..."
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.. [#] ``fuel`` choices are "electricity", "natural gas", "fuel oil", "propane", "coal", "wood", and "wood pellets".
``systemType`` String See [#]_ Yes Type of water heating system. fuelType assumed as base heating fuel for "storage water heater" and "instantaneous water heater".
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``systemType`` String See [#]_ Yes Type of water heating system. ``fuelType`` assumed as base heating fuel for "storage water heater" and "instantaneous water heater".
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``efficiencyClass`` String See [#]_ Yes
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``dhwLoadFraction`` Double 0 - 1 [#]_ No 1.0 DHW load for the new water heating system
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``costs`` Array of :ref:`cost` No ``[]`` Implied costs of measure
@@ -246,6 +246,16 @@ Assumptions for ``efficiencyClass``:
Attic insulation measure applicability is determined based on the difference between the base and improved assembly effective R-value using the following table.
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