13.3 How adjustments affect other Surfaces

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Note: As glazing percentages are adjusted for individual Surfaces, other Surfaces that remain unlocked may have their glazing increase or decrease also.  This occurs in order to maintain the overall percentage that is set in the Performance tab.  The amount of adjustment will depend on the size of the areas being changed (smaller areas will not have a large affect on other unlocked areas).

For example:

  1. 50% is set in the Performance Manager for all Surfaces on the model

    50% Overall Setting in the Performance Manager
  2. Some Surfaces are then independently set separately to 80%
Modifying some Surfaces independently of the Overall setting
  1. Remaining Surfaces that are unlocked may now fall to from 50% to 42% (in order to maintain the overall 50% target for the project).  The application will try to reconcile some Surfaces at 80% and adjust others to maintain the overall 50% overall setting.  This will cause unlocked Surfaces only to be adjusted up or down.  Note: Inputting an value into the Overall Percentage Glazing and applying will override any separate settings and restore all glazed areas to this value.
Unlocked Surfaces will be adjusted to maintain the Overall Model Percentage set
  1. If Surfaces have been locked so that their glazed area cannot be changed, then those Surfaces will remain at 50%.  If enough Surfaces are adjusted by a large enough value, the overall percentage for the model may then be forced to adjust eg. 40%.  The Surfaces being modified are the highest priority (the values input for these take precedent).  Surfaces that are locked will not be adjusted to accommodate others.  Unlocked Surfaces are the lowest priority and will be adjusted if necessary to maintain the overall percentage on the model.

    Locked Surfaces will not be adjusted
  2. As Surfaces are individually adjusted (their percentage area of glazing is adjusted independently of that set in the Performance tab) other Surfaces may be affected (if they are unlocked) or, if enough Surfaces are locked preventing adjustment, the overall value itself will change to accommodate the new conditions.

    Overall Percentage will eventually change if enough Surfaces are modified

Note: If Auto-Distribute is used, it will only be applied to unlocked Surfaces (locked Surfaces will not have their glazing percentages adjusted to equalize Heat Gains)


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