Retrotec USACE - Manual (Page 78)

56 ENERGY & PROCESS ASSESSMENT PROTOCOL
commissioning: “Continuous Commissioning is an ongoing process to resolve
operating problems, improve comfort, optimize energy use and identify ret-
rofi ts for existing commercial and institutional buildings and central plant
facilities.” Furthermore, the following general phases for CC are given:
Develop the CC plan ■
Develop performance baselines ■
Conduct system measurements and develop CC measures ■
Implement CC measures ■
Document comfort improvements and energy savings ■
Keep the commissioning continuous ■
Introducing a continuous commissioning process to a building can thus be
described as a multilevel process. The process will be a top-down approach
that starts on the building level and goes down to selected single components
if necessary. The available information for the building (stock data and mea-
surement) will increase from step to step and will increasingly enable a more
detailed analysis of the building performance.
Figure 17 describes our view on continuous commissioning as a four-step pro-
cedure on a time scale. Steps 1–3 correspond to energy assessment Levels I–III
discussed in previous chapters. It is important to notice that the continuous com-
missioning approach can be introduced right after step 1 because the building
classifi cation is already available at that stage. To clarify, we strongly recommend to
observe the building’s behavior continuously—at whatever level seems appropri-
ate—to make sure it stays in the condition reached after the assessment.
4
1. Operational rating (simple benchmark)
2. Asset rating (+installation of data acquisition)
3. FDD + optimization
4. Regular inspection
3 2 1
Time
Operational rating
(Simple benchmark)
Asset rating +
availability of hourly data
Ongoing continuous commissioning
Operation without faults
and optimized,
savings + cost documented
Figure 17. Scheme of the four-step procedure on a time scale as developed in BuildingEQ.