3.7.1 Basic System Information

HVAC System Name
Applicability	All system types A unique descriptor for each HVAC System
Units	Text, unique
Input Restrictions	When applicable, this input should match the tags that are used on the plans.
Baseline Rules	None

System Type
Applicability	All system types
Definition	A unique descriptor which identifies the following attributes of an HVAC System: Number of air decks (one to three); Constant or variable air flow; Type of terminal device; and Fan configuration for multiple deck systems.
Units	None
Input Restrictions	As designed
Baseline Rules	Based on the prescribed system type (see [bookref id="hvac-mapping"]). The baseline system types are shown in the table below.

[table title="Baseline Building System Type" id="baseline-building-system-type"]

Baseline Building System	System Type
System 1 – PTAC	Single Zone Heating and Cooling
System 2 – PTHP	Single Zone Heating and Cooling
System 3 – PSZ-AC	Single Zone Heating and Cooling
System 4 – PSZ-HP	Single Zone Heating and Cooling
System 5 – Packaged VAV with Reheat	Single Duct VAV
System 6 – Packaged VAV with PFP boxes	Single Duct VAV
System 7 – VAV with Reheat	Single Duct VAV
System 8 – VAV with PFP boxes	Single Duct VAV

Total Cooling Capacity
Applicability	All system types
Definition	The installed cooling capacity of the project. This includes all: Chillers; Built-up DX; and, Packaged cooling units.
Units	Cooling tons (12,000 Btu/h per ton)
Input Restrictions	As designed. This could be calculated by the program from the proposed design building description or a separate load calculation may be used. Unmet load hours for the simulation shall not exceed 300 annually. Weather conditions used in sizing runs shall be based on 1% dry-bulb and 1% wet-bulb cooling design temperatures.
Baseline Rules	Autosize. The cooling capacity shall be oversized by 15%. If the number of unmet load hours of the proposed design exceeds the number of unmet load hours of the baseline by more than 50, decrease the cooling capacity as indicated in [bookref id="calculation-process-for-tax-deductions-and-green-building-ratings"] and [bookref id="procedure-for-adjusting-equipment-hvac-sizes-in-the-baseline-building"].

HVAC System Name
Applicability	All system types A unique descriptor for each HVAC System
Units	Text, unique
Input Restrictions	When applicable, this input should match the tags that are used on the plans.
Baseline Rules	None

System Type
Applicability	All system types
Definition	A unique descriptor which identifies the following attributes of an HVAC System: Number of air decks (one to three); Constant or variable air flow; Type of terminal device; and Fan configuration for multiple deck systems.
Units	None
Input Restrictions	As designed
Baseline Rules	Based on the prescribed system type (see Table 6.7.1-1). The baseline system types are shown in the table below.

Table 6.7.1-1: Baseline Building System Type

Baseline Building System	System Type
System 1 – PTAC	Single Zone Heating and Cooling
System 2 – PTHP	Single Zone Heating and Cooling
System 3 – PSZ-AC	Single Zone Heating and Cooling
System 4 – PSZ-HP	Single Zone Heating and Cooling
System 5 – Packaged VAV with Reheat	Single Duct VAV
System 6 – Packaged VAV with PFP boxes	Single Duct VAV
System 7 – VAV with Reheat	Single Duct VAV
System 8 – VAV with PFP boxes	Single Duct VAV
System 9 – Heating and Ventilation	Constant Volume Heat/Vent (no cooling)
System 10 – Heating and Ventilation	Constant Volume Heat/Vent (no cooling)

Total Cooling Capacity
Applicability	All system types
Definition	The installed cooling capacity of the project. This includes all: Chillers; Built-up DX; and, Packaged cooling units.
Units	Cooling tons (12,000 Btu/h per ton)
Input Restrictions	As designed. This could be calculated by the program from the proposed design building description or a separate load calculation may be used. Unmet load hours for the simulation shall not exceed 300 annually. Weather conditions used in sizing runs shall be based on 1% dry-bulb and 1% wet-bulb cooling design temperatures.
Baseline Rules	Autosize. The cooling capacity shall be oversized by 15%.

HVAC System Name
Applicability	All system types A unique descriptor for each HVAC System
Units	Text, unique
Input Restrictions	When applicable, this input should match the tags that are used on the plans.
Baseline Rules	None

System Type
Applicability	All system types
Definition	A unique descriptor which identifies the following attributes of an HVAC System: Number of air decks (one to three); Constant or variable air flow; Type of terminal device; and Fan configuration for multiple deck systems.
Units	List
Input Restrictions	System types listed in Table 3.7-1, plus others supported by the software such as the following: CRAC – Computer Room Air Conditioner CRAH – Computer Room Air Handler FPFC – Four-pipe fan coil DFDD – Dual-fan dual duct RADFLR – Radiant floor heating and cooling WSHP – water-source heat pump
Baseline Rules	The baseline building HVAC system is determined based on the building and space use, size and heating source. See Table 3.7-1.

Air Distribution Type
Applicability	All system types
Definition	Type of air distribution system that is coupled with the HVAC system. The choices are (overhead) mixing ventilation system, underfloor air distribution system (UFAD), and displacement ventilation system (DV).
Units	List: Mixing, UFAD, DV
Input Restrictions	As designed.
Baseline Rules	Mixing

Thermal Zone List
Applicability	All system types
Definition	Comprehensive list of all thermal zones served by a given HVAC system.
Units	Cooling tons (12,000 Btu/h per ton)
Input Restrictions	As designed.
Baseline Rules	For systems 1, 2, 3, 4, 9, and 10, each zone shall have its own system. For systems 5, 6, 7, and 8, all zones on each floor shall be assigned to a single system.

Total Cooling Capacity
Applicability	All system types
Definition	The installed cooling capacity of the project. This includes all: Chillers; Built-up DX; and, Packaged cooling units.
Units	Cooling tons (12,000 Btu/h per ton)
Input Restrictions	As designed. This could be calculated by the simulation program from the proposed design building description or a separate load calculation may be used. Unmet load hours for the simulation shall not exceed 300 annually. Weather conditions used in sizing runs shall be based on 1% dry-bulb and 1% wet-bulb cooling design temperatures.
Baseline Rules	Autosize. The cooling capacity shall be oversized by 15%. If the number of unmet load hours exceeds 300, increase the cooling capacity according to the procedures in Chapter 2.

Total Heating Capacity
Applicability	All system types
Definition	The installed heating capacity of the project. This includes all: Boilers; Electric Resistance; and, Heat Pump Gas Furnace
Units	Btu/h
Input Restrictions	As designed.
Baseline Rules	Autosize. The cooling capacity shall be oversized by 25%. If the number of unmet load hours exceeds 300, increase the heating capacity according to the procedures in Chapter 2.

90.1-2019

HVAC System Name
Applicability	All system types
Definition	A unique descriptor for each HVAC system
Units	Text, unique
Input Restrictions	When applicable, this input should match the tags that are used on the plans
Baseline Building	None

System Type

Applicability

All system types

Definition

A unique descriptor that identifies the following attributes of an HVAC system:

· Number of air decks (one to three);

· Constant or variable airflow;

· Type of terminal device; and

· Fan configuration for multiple deck systems.

Units

List:

· PTAC – Packaged Terminal Air Conditioner

· PTHP – Packaged Terminal Heat Pump

· PSZ-AC – Packaged Single Zone Air Conditioner

· PSZ-HP – Packaged Single Zone Heat Pump

· PVAV – Packaged VAV with Reheat

· VAV – VAV with Reheat

· PSZVAV – Packaged Single Zone VAV

· PSZVAVHP – Packaged Single Zone VAV Heat Pump

· HV – Heating and Ventilation Only

· CRAC – Computer Room Air Conditioner

· CRAH – Computer Room Air Handler

· FPFC – Four-Pipe Fan Coil

· TPFC- Two Pipe Fan Coil · SFDD – Single Fan Dual Duct

· DFDD – Dual-Fan Dual Duct

· RADFLR – Radiant Floor Heating And Cooling

· WSHP – Water-Source Heat Pump

· ACB- Active Chilled Beams

· PCB- Passive chilled Beams

· Other

Input Restrictions

As designed

Baseline Building

Based on the prescribed system type in the HVAC system map. The baseline system types are shown in the table below.

Table 51. Baseline Building System Type

System Number	System Type
1	PTAC
2	PTHP
3	PSZ AC
4	PSZ HP
5	PVAV reheat
6	Packaged VAV with PFP boxes
7	VAV with reheat
8	VAV with PFP boxes
9	Heating and ventilation
10	Heating and ventilation
11	SZ VAV
12	SZ-CV-HW
13	SZ-CV-ER

Total Cooling Capacity
Applicability	All system types
Definition	The installed cooling capacity of the project. This includes all: · Chillers, · Built-up DX, and · Packaged cooling units.
Units	Cooling tons
Input Restrictions	As designed. This could be calculated by the simulation program from the proposed design building description or a separate load calculation may be used. Unmet load hours for the simulation shall not exceed 300 annually. Weather conditions used in sizing runs shall be based on 1% dry-bulb and 1% wet-bulb cooling design temperatures.
Baseline Building	Autosize. The cooling capacity shall be oversized by 15%. Refer to Section 2.7.2 for baseline equipment sizing procedure. If the number of UMLH exceeds 300, increase the cooling capacity according to the procedures in Chapter 2, Section 2.5.

Total Heating Capacity
Applicability	All system types
Definition	The installed cooling capacity of the project. This includes all: · Boilers, · Electric Resistance, · Heat Pumps, · Gas Furnaces.
Units	Btu/hr
Input Restrictions	As designed.
Baseline Building	Autosize. The heating capacity shall be oversized by 25%. Refer to Section 2.7.2 for baseline equipment sizing procedure. If the number of UMLH exceeds 300, increase the heating capacity according to the procedures in Chapter 2, Section 2.5.

HVAC System Name
Applicability	All system types A unique descriptor for each HVAC System
Units	Text, unique
Input Restrictions	When applicable, this input should match the tags that are used on the plans.

System Type
Applicability	All system types
Definition	A unique descriptor which identifies the following attributes of an HVAC System: Number of air decks (one to three); Constant or variable air flow; Type of terminal device; and Fan configuration for multiple deck systems.
Units	None
Input Restrictions	As designed

Total Cooling Capacity
Applicability	All system types
Definition	The installed cooling capacity of the project. This includes all: Chillers; Built-up DX; and, Packaged cooling units.
Units	Cooling tons (12,000 Btu/h per ton)
Input Restrictions	As designed. This could be calculated by the program from the proposed design building description or a separate load calculation may be used. Unmet load hours for the simulation shall not exceed 300 annually. Weather conditions used in sizing runs shall be based on 1% dry-bulb and 1% wet-bulb cooling design temperatures.

HVAC System Name
Applicability	All system types A unique descriptor for each HVAC System
Units	Text, unique
Input Restrictions	When applicable, this input should match the tags that are used on the plans.

System Type
Applicability	All system types
Definition	A unique descriptor which identifies the following attributes of an HVAC System: Number of air decks (one to three); Constant or variable air flow; Type of terminal device; and Fan configuration for multiple deck systems.
Units	None
Input Restrictions	As designed

Total Cooling Capacity
Applicability	All system types
Definition	The installed cooling capacity of the project. This includes all: Chillers; Built-up DX; and, Packaged cooling units.
Units	Cooling tons (12,000 Btu/h per ton)
Input Restrictions	As designed. This could be calculated by the program from the proposed design building description or a separate load calculation may be used. Unmet load hours for the simulation shall not exceed 300 annually. Weather conditions used in sizing runs shall be based on 1% dry-bulb and 1% wet-bulb cooling design temperatures.