Recent HCPS Documents Related to Operation of Mechanical HVAC Systems
A proposal by Siemens Industry to modify 374 pieces of HVAC equipment at HCPS schools, in order to implement pandemic recommendations from the Association of Heating, Refrigeration and Air Conditioning Engineers. The work would address various technical aspects of increasing the flow of outside air and reducing “cross-contamination” of air streams. The July 16 proposal, for $171,500, is currently being implemented.
A proposal by Automated Logic Engineering for programming and equipment modifications to automated HVAC systems at 11 HCPS schools, to bring them into accord with recommendations from the U.S. Centers for Disease Control and Prevention, and the Association of Heating, Refrigeration and Air Conditioning Engineers. Among the changes outlined in the proposal are modifications to improve indoor air quality by reducing “cross-contamination” of air streams, purging air in buildings two hours before and after occupancy, revising temperatures of unoccupied areas of school buildings and increasing outside air. The Aug. 3 proposal, for $32,300, is currently being implemented.
The 2020 edition of a report prepared annually by Moseley Architects for HCPS, to assess the most pressing equipment needs throughout the school division. The report provides cost estimates to assess the condition of identified HVAC equipment at various HCPS schools and replace them, and assigns them numbers according to recommended priority. It also includes work completed in recent years, including bid amounts.
A list, compiled by Automated Logic Engineering, of HVAC pandemic recommendations from the Association of Heating, Refrigeration and Air Conditioning Engineers. The list describes the scope of the work that would be done in various HCPS schools.
A summary of Moseley Architects’ consultations with HCPS to address several mechanical and HVAC modifications to conform to the recommendations of the Association of Heating, Refrigeration and Air Conditioning Engineers. The summary addresses the cost of installing ultraviolet lights, and the feasibility of installing higher efficiency HVAC filters, in a typical HCPS elementary, middle and high school.
Daily “Building Automation System,” or BAS reports from June 1 to Oct. 9, created by HCPS’ facilities manager, who monitors the building systems. The daily reports describe, in abbreviated form, equipment at HCPS schools that is under repair or not working correctly, as well as system alarms that may indicate operation issues. The equipment categories include water chillers, boilers, building automation systems and HVAC systems. HCPS uses these reports to monitor HVAC systems, which when operating properly, contribute to air quality. These documents reflect interactions with consultants and contractors, as well as HCPS facilities staff members, who also contribute to the operation and quality of the HVAC systems. Some abbreviations used in the reports include:
- CW: Cold Water.
- HW: Hot Water.
- OPER: Operator/manual mode.
- UNOCC: Unoccupied mode.
- ACU: Air Conditioning Unit.
- HP: Heat Pump.
- OAU: Outside Air Unit.
- AHU: Air Handling Unit.
- RA: Return Air.
- OA: Outside Air.
- ERU: Energy Recovery Unit.
- MAU: Makeup Air Unit.
- RTU: Roof Top Unit.
- PACU: Packaged Air Conditioning Unit.
- HPL: Heat Pump Loop.
- RTAC: Roof Top Air Conditioner.
- CWP: Chill Water Pump.