Select and add if your HVAC system has heating or cooling zone equipment. Zone equipment typically include smaller, non-ducted units (1-6 tons) serving a single zone (such as a hotel room). Identify the appropriate Heating and Cooling equipment types present and complete the inputs below for zone equipment. If zone equipment is served by plant loops or VRF Condenser Units, then those should be created first.

 

Note:  If multiple zone equipment serve the same block, create a single zone equipment entry, and enter capacity weighted averages for the heating and cooling efficiencies, and a weighted average for the total system fan power using the supply CFM. Use the COP Calculator tool to calculate the weighted average efficiencies and adjust the efficiencies for supply fan power.


After creating zone equipment, select and assign to blocks by ‘dragging and dropping’.  See the Heating and Cooling page for additional details.

 

TSPR data entry options for Zone Equipment

 

Name – Default component text and counters are automatically added. This entry may be edited to include other descriptive or identifying text.

 

System Type – Ten common types of HVAC systems are available to select when adding Zone Equipment distribution equipment to a building. After making a selection, review the Heating and Cooling sources that are automatically populated. Create and link Plant Loops as needed and prompted for certain system types. Refer to the HVAC System Types section for a table of suggested  configurations, and guidance regarding System Type selections.

 

Linked VRF Condenser Unit – Menu item available if VRF selected as the System Type. A VRF Condenser Units  must be created and selected here to complete the data entry for the Zone Equipment. 

 

Cooling Equipment

 

Cooling Source– Pull-down menu selections. Select your installed cooling equipment type from the following:

 

No Cooling – If no mechanical cooling equipment is installed

 

Terminal DX – Included as part of Packaged terminal air-conditioner (PTAC); Packaged terminal heat pump (PTHP);  Water-Loop Heat Pump (WLHP); Ground Source Heat Pump (GSHP); and Window Air Conditioner Systems.

 

Plant – Available selection for Four Pipe Fan Coil Units, or Other Systems. Select this source if a Plant Cooling Loop was previously entered. The Plant Loop name and type (Chiller) will be available to select under the Plant Loop field.

 

VRF – Automatically selected when VRF is selected as the System Type. This source is not available to select for any other System Type.

 

Plant Loop (Cooling) – Menu item available if plant is selected as the Cooling Source. Pull-down menu selections: Previously defined Cooling Plant Loops.


Efficiency (Cooling) – Available input if terminal DX has been selected as the Cooling Source.   Efficiency of the cooling system in coefficient of performance (COP) is the ratio of the rate of heat removed to the rate of energy input, in consistent units, for a complete refrigerating system or some specific portion of that system under designated operating conditions.  A maximum value of 8 may be entered; typical COP values for air conditioning and heat pump systems are in the range of 2-4.

Note:  The COP input should not include the supply fan energy. Use the COP Calculator Tool to calculate the adjusted COP.

 

Heating Equipment


Heating Source– Pull-down menu selections. Select your installed heating equipment type from the following:

 

No Heating – If no mechanical heating equipment is installed.

 

Single Zone Central Furnace – Natural gas, fuel oil, or propane-fired or electric resistance furnace.

 

Heat Pump – One or more factory-made assemblies that normally include an indoor conditioning coil, compressor(s), and an outdoor refrigerant-to-air coil or refrigerant-to-water heat exchanger. These units provide both heating and cooling functions.

 

Plant – Available selection for Four Pipe Fan Coil Units, Radiators, or Other Systems. Select this source if a Plant Heating Loop was previously entered. The Plant Loop name and type (Boiler) will be available to select under the Plant Loop field.

 

Convective Baseboard: Electric – Select this source as a Secondary Heating and Cooling System. May be added to a block after either a Window Air Conditioner, Packaged Terminal Air Conditioner, or Four Pipe Fan Coil Unit system has been created and assigned.

 

Convective Baseboard: Hot Water – Select this source as a Secondary Heating and Cooling System. May be added to a block after either a Window Air Conditioner, Packaged Terminal Air Conditioner, or Four Pipe Fan Coil Unit system has been created and assigned. A Heating Plant Loop must be created and linked to this selection.

 

VRF – Automatically selected when VRF is selected as the System Type. This source is not available to select for any other System Type.

 

Fuel Type – Menu item available if central furnace or heat pump is selected as the heating source.  Pull-down menu selections: Natural Gas (default for central furnaces; not available for heat pumps), Fuel Oil, Propane, or Electricity (only option for heat pumps; default and hidden for electric baseboards).

 

Condenser Type – Menu item available if heat pump is selected as the heating source. Pull-down menu selections: Air (default), Ground or Water.  Note: Ground and Water options are only displayed after water-loop heat pump or ground source heat pump System Types have been selected.

 

Plant Loop (Heating) – Menu item available if plant or hot water baseboard is selected as the heating source. Pull-down menu selections: Previously defined Heating Plant Loops.

 

Condenser Plant Loop – Menu item available for water-loop heat pump or ground source heat pump System Types. Pull-down menu selections: Previously defined Condenser Plant Loops.

 

Efficiency (Heating) – Available input if central furnace, heat pump, or convective baseboard (electric) is selected as the heating source.  For furnaces, enter the percentage of the rate of heat delivered to the rate of energy input.  A minimum of 60% may be entered; typical values are between 74%-92%.  For heat pumps and baseboards, the efficiency of the heating system in coefficient of performance (COP) is the ratio of the rate of heat removed to the rate of energy input, in consistent units, for a complete refrigerating system or some specific portion of that system under designated operating conditions.  A maximum value of 8 may be entered; typical COP values for heat pump systems are in the range of 2-4.

 

Note:  The COP input should not include the supply fan energy. Use the COP Calculator Tool to calculate the adjusted COP.

 

Fan Systems

 

Total System Fan Power – Enter the value of electric power for all fans (supply, return, relief, exhaust) required to operate at fan system design conditions, divided by the design supply airflow rate (W/CFM).