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PSZ-AC w/GAS

Packaged Single-Zone Air Conditioner with Gas - This system consists of a Packaged Single Zone (PSZ) unit serving each conditioned thermal zone. The PSZ provides heating to each zone using a hot water coil served by a primary only variable flow hot water loop utilizing a natural gas boiler. Cooling is provided by a unitary DX cooling coil. The default ASHRAE Standard used to set the efficiency of regulated equipment is ASHRAE 90.1-2016.

system diagram

Packaged Single Zone (PSZ-AC):

Quantity: 1 per conditioned Thermal Zone

Design Heating / Cooling Capacity: Auto sized

Cooling: Provided by DX cooling coil

Heating: Provided by Hot Water Coil

Cooling Efficiency: Based on Capacity and ASHRAE Standard

Design Supply Fan Airflow: Constant Volume, Auto sized

Supply Fan Efficiency: Based on Airflow and ASHRAE Standard

Hot Water Boiler:

Quantity: 1

Design Capacity: Auto-sized

Type: Natural Gas, Non-Condensing

Controls: Based on Capacity and ASHRAE Standard

Efficiency: Based on Capacity and ASHRAE Standard

Hot Water Pumps:

Quantity: 1

Design Flow: Auto-sized

Type: Variable Speed, 30% minimum flow

Efficiency: Based on Design flow and ASHRAE Standard

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