Include Heating System

Includes the heating system in the energy calculations. If this option is deselected, but the configuration includes an electrical energy demand, the total heating energy demand is assumed to be electric.

Primary System

Coverage

Displays the percentage of the building that is heated by the primary heating system based on whether there is a secondary system and what its coverage percentage is. If there is no secondary system, the primary system automatically covers 100%.

System

Select a heating category, and then a heating system. The system list can be modified; see Specifying system sets.

Secondary System

To include a secondary system, set a coverage value other than 0 (zero) percent

Coverage

Indicates the percentage of the building that is heated by the secondary system

System

Select a secondary heating category, and then a heating system. The system list can be modified; see Specifying system sets.

Include Heating Distribution System

Includes the heating distribution system in the energy calculations; the heating system must already be included

System list

Select a heating distribution system. The system list can be modified; see Specifying system sets.

Automatic Ductwork Length Estimation Based on Building Type and Size

Select this option to automatically estimate the distribution system’s ductwork length based on the building information

Manual Ductwork Length

Select this option to manually enter the pipework and exhaust air duct length values through the warm (heated) area of the building and up to two unheated or outdoor zones