Cii Service of Greensboro outlines energy savings for the City of Sanford
Cii first began working with the City of Sanford in 1983. The City of Sanford, always looking for opportunities to reduce their operating costs and improve the comfort levels for their employees, decided to have an HVAC Preventive Maintenance Agreement with Cii Service of Greensboro for their City Municipal Building. This was the start of a relationship that has provided the City of Sanford with substantial savings, equipment reliability and improved comfort levels through Cii”s Preventive Maintenance program.
Ed West, branch manager for Cii Service of Greensboro, recently completed a maintenance / energy usage report for the City of Sanford. This report was made to highlight the benefits of preventive maintenance agreements and to point out the effectiveness of the electronic control and monitoring system installed by Cii.
Ed determined that over the years, the energy saving program saved the City of Sanford over $40,000 a year and at least $640,000 over the past 16 years. Their electrical usage for 2011 was 572,900 kWh less than when the program began, based on their usage in 1993.
Some of the noteworthy facility improvements include:
- November 18, 1983 – HVAC Preventive Maintenance Agreement signed.
- May 31, 1984 – Cii received a letter of appreciation from the client, complimenting Cii for getting the HVAC systems to operate properly for the first time since the facility was built.
- December 21, 1994 – Cii outlined, designed and proposed the City”s first Energy Conservation Plan. The City sent our plan to be reviewed by CP&L engineering. They reviewed and agreed with our plan.
- May 3, 1995 – Mayor, Winston Hester, signed an Energy Conservation Plan with Savings Guarantee. The plan”s implementation costs were $121,230.00 with a guaranteed annual energy savings of $40,000.
- The building”s main air handler motor was reduced from 75 horsepower to 50 and a variable speed drive was installed to control its output.
- Accutherm® “Therma-Fuser” VAV modules were installed throughout the building.
- Electronic temperature controls were installed for precise operation and to replace antiquated pneumatic controls, which were high maintenance and high failure.
- Monitor and log building kWh demand for load shed and other energy saving opportunities.
- October 6, 1998 – Cii replaced the facility”s original chiller with a new high efficiency model.
- July 4, 1999 – Cii added a programmable speech dialer to the HVAC control system to notify Cii instantly in the event of a system alarm or temperature issue within the 911 call center.
- May 17, 2001 – Cii replaced the remaining pneumatic controls with electronic devices. This eliminated the need to replace the aging pneumatic air compressor and the refrigerated air drier; eliminating their energy use, maintenance and repair.
- June 8, 2001 – Cii installed a chilled water coil in the main supply air duct of the Emergency Operations Center”s HVAC unit. This allowed the EOC area to be cooled by the facility”s chiller, which is much more efficient than the mechanical cooling of the dedicated EOC HVAC unit. This also made the existing mechanical cooling a back-up cooling system, further reducing maintenance and repairs.
- December 6, 2001 – Cii upgraded the facility”s main air handling unit with:
- Low Leakage outside air, return air and exhaust air dampers
- Return Air CO2 sensor
- Programmed the electronic control system for demand ventilation to reduce energy consumption.
- May 17, 2006 – Cii installed a variable speed drive on the EOC air handler, eliminating the energy wasting air by- pass dampers.
During this review, Ed was able to provide printouts from our Preventive Maintenance database. These forms showed what equipment we serviced, when, and what services were performed during each inspection. As services are performed they are tracked, an incomplete task is reprinted until completed to ensure that no task is left undone.
Congratulations to the City of Sanford, Ed and his branch for working together to find ways to improve the comfort levels for the City”s employees while reducing operating costs with energy efficient improvements.