Jul 15, 2023 · PSZ-AC is a self-contained HVAC system that offers cooling and heating solutions for single-zone applications. These units are typically housed in one cabinet and are installed on rooftops or ground level, connected to the conditioned space via ductwork.

Sep 1, 2020 · System 3 - Constant-volume PSZ-AC (packaged rooftop air conditioner) with a "direct expansion" main cooling coil and a "fossil fuel furnace" main heating coil. Go to "Configure Systems" to configure as required, which are discussed in other sections of this article.

Sim List, ASHRAE system 3 is, Packaged Single Zone Air Conditioner (PSZ-AC). The description of PSZ-AC says, "Packaged rooftop air conditioner". I assume that this means a single unit serving multiple zones. This doesn't seem to make sense since the …

HVAC systems in the baseline building design shall comply with the following: The building type with the largest conditioned floor area. Number of floors (including floors above grade and below grade but not including floors solely devoted to parking). Gross conditioned floor area.

There are also substantial electricity savings in the heating end use from converting electric resistance RTUs (“PSZ-AC with electric coil”) in the baseline to HP-RTUs which have higher heating COPs.

Therefore, our predominant condition to determine the system type for entire building should be System 3- PSZ-AC. However, the ASHRAE/IESNA 90.1-2007 Section G3.1.1 Exceptions a. states that: “Use additional system type(s) for nonpredominant conditions (i.e., residential/nonresidential or heating source) if those conditions apply to more than ...

HVAC systems in the baseline building design shall be determined in the following order of priority: 1. The building type with the largest conditioned floor area. 2. Number of floors (including floors above grade and below grade but not including floors solely devoted to parking). 3. Gross conditioned floor area. 4.

TRANSCRIPT: ASHRAE Baseline System 3 PSZ-AC Packaged rooftop air conditioner System 3 is our first non-residential baseline system. As we can see on the chart here, it is a packaged rooftop air conditioner, constant volume, DX with a fossil fuel furnace.

These systems meet all ASHRAE 90.1-2007 PRM requirements for baseline systems modeling, including all detailed system-specific requirements.

Jul 13, 2015 · System Number System Name Fan Control Heating Source Cooling Source Sefaira Equivalent Sefaira Notes 1 PTAC CV Fossil Boiler Direct Expansion 'Packaged Terminal Air Conditioner'...