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A case study of the overview, process, and results of the re-tuning that was conducted in a building in Arlington, Virginia by Vornado Realty Trust in October 2012. Re-tuning provided the facilities management team with the ability to identify and understand building scheduling opportunities that drove significant, low-cost energy savings. Five measures were conducted, many of which pertained to the HVAC system.

Re-tune the building based on specific findings. Building re-tuning maxims, assumptions, and conclusions.

Part 10 of a 10 part Building Re-tuning training material.
Entire program is at http://buildingretuning.pnnl.gov/training.stm

Understand the purpose of re-tuning, definition of building re-tuning, and what to expect from the training class

Part one of a 10 part Building Re-tuning training material.
Entire program is at http://buildingretuning.pnnl.gov/training.stm

Understand that re-tuning is the process of learning about a building and then making incremental adjustments to achieve more desirable results.

Part 2 of a 10 part Building Re-tuning training material.
Entire program is at http://buildingretuning.pnnl.gov/training.stm

A guide to understand the information needed to re-tune a building

Part 3 of a 10 part Building Re-tuning training material.
Entire program is at http://buildingretuning.pnnl.gov/training.stm

Detect potential operational problems even before visiting the building. Identify problems that require time histories to detect – incorrect schedules, no use of set back during unoccupied modes, poor economizer operation. Understand how to use the Energy Charting and Metrics (ECAM) tool

Part 4 of a 10 part Building Re-tuning training material.
Entire program is at http://buildingretuning.pnnl.gov/training.stm

Learn how to re-tune air-handling units (AHUs)

Part 5 of a 10 part Building Re-tuning training material.
Entire program is at http://buildingretuning.pnnl.gov/training.stm

A guide to understand economizer operations as it relates to re-tuning or determining whether air-side economizers are operating properly.

Part 6 of a 10 part Building Re-tuning training material.
Entire program is at http://buildingretuning.pnnl.gov/training.stm

Understand re-tuning for central utility plants including boiler and chiller operation issues.

Part 8 of a 10 part Building Re-tuning training material.
Entire program is at http://buildingretuning.pnnl.gov/training.stm

Understand how to conduct a thorough building "walk down" for a re-tuning effort. Purpose being to develop a general impression of: overall building condition, overall building design, HVAC system design. Also to collect some basic data on the building systems at a level of detail greater than the initial data collection and to confirm/verify issues or problems identified through trend analysis.

Part 9 of a 10 part Building Re-tuning training material.
Entire program is at http://buildingretuning.pnnl.gov/training.stm