Enter values in this section to identify the HVAC (heating, cooling, air distribution, and ventilation and exhaust) systems present in the building. Inputs include fields for central plants, distribution equipment and zone controls.
Use the green ‘Add HVAC System’ button to add entries for as many HVAC systems as are present in the building, and the space functions that they serve. Many of the fields in this section are required for selected city reports, and must be completed before the section is identified as complete. Select N/A for any fields where inputs do not apply.
Audit Template inputs for HVAC:
Create a Heating Plant (e.g. boiler or district hot water or steam), Cooling Plant (e.g. chiller or district chilled water), or a Condenser Plant (cooling tower or ground heat exchanger), for any central plant serving the building by selecting the green ‘Add’ buttons.
Enter the plant type and fuel type (for heating and cooling plants). For boilers and chillers, enter the capacity, rated efficiency, and other details from the drop down menu options, and select any controls that may applicable.
To represent water-cooled chillers, add a Condenser Plant, and link it to a chiller from the Linked Condenser Plant field of a Cooling Plant.
Chilled water reset, chiller pump and condenser plant controls are not ASHRAE level 2 inputs, but may be entered if the information is available.
Validations Note: The Audit Template will validate inputs to verify minimum required inputs, validity of the entered value and combination of inputs. An incorrect value (for example, an input of 80% for COP of a chiller) will result in an error prompt; similarly the user interface will prevent incorrect input combinations (for example, a fuel type for a district chilled water system).
Select a Heating Source and Cooling Source from the drop down menus, and enter values for associated component fields where applicable to account for the HVAC system(s) present in the building.
If Plant is chosen as the Heating and/or Cooling Source, reference a Plant that was added previously by selecting from the Heating or Cooling Plant drop down menus. For furnaces and/or DX cooling (direct expansion air conditioning systems), complete the additional fields to identify location, condition, capacity, and rated efficiency.
Identify applicable distribution equipment, ventilation systems, and control system components to complete HVAC System entries.
To create a ventilation only system, or one without any mechanical equipment, add an HVAC System with ‘No Heating’ and ‘No Cooling’ selected as the Heating and Cooling Source. When prompted for the Distribution Equipment, you may select ‘Other’ for the Central Distribution and Delivery Equipment Type, and add custom text such as ‘none - naturally ventilated parking area’. And, you may select ‘Natural Ventilation’ from the Outdoor Air Control drop down in the Ventilation Systems section.
Space Functions Served
Identify the space functions served for each of the HVAC system types entered by selecting the blue ‘Add Space’ button. Select from the use types that were previously identified in the Use Types section. Enter the percentage of the area served by the system. Add additional spaces to account for all of the use types served for each HVAC system.
After HVAC system values have been entered, return to the Use Types section to select the Principal HVAC Type to reflect the HVAC System with the highest percentage served for each use type.
View Space Functions Served requirements for HVAC in New York Energy Efficiency Reports, San Francisco, and Berkeley Reports