TAB Journal Summer 2019 - 13

pressure tested individually and then joined beside eachother
on site. The leakage was found to be in the common energy
recovery coil connections between the supply and exhaust
units. The reason it wasn't found before is that with both
systems running side by side it was nearly impossible to
determine and locate the very small openings of leakage.
The reason these small airways could move such a large
volume of air was due to the nearly 12 in. w.c. of pressure
differential across these two adjacent cabinets with the coil
connections. The supply being pressurized to +6.3 in. and
the exhaust in a vacuum of -5.4 in. The systems were shut
down and sealed again to a more stringent standard than was
expected to be necessary. This sealing corrected the issue.
ramped up the other unit's exhaust systems to keep from
over-pressurizing the building, and then tested the supply
side only for one unit. The total airflow measured was
now in range of the VAV terminal tabulations. Per the
manufacturer, the supply unit and the exhaust unit had been

In the end, procedures and methods that are true to AABC
standards helped us analyze the data recorded, form a case
and deduce that our "missing air" was not the originally
suspected duct leakage or errors in field measurements but
the infamous internal unit leakage.

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SALES@KANOMAX-USA.COM

TAB Journal Summer 2019

13


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TAB Journal Summer 2019

Table of Contents for the Digital Edition of TAB Journal Summer 2019

TAB Journal Summer 2019 - Cover1
TAB Journal Summer 2019 - Cover2
TAB Journal Summer 2019 - 1
TAB Journal Summer 2019 - 2
TAB Journal Summer 2019 - 3
TAB Journal Summer 2019 - 4
TAB Journal Summer 2019 - 5
TAB Journal Summer 2019 - 6
TAB Journal Summer 2019 - 7
TAB Journal Summer 2019 - 8
TAB Journal Summer 2019 - 9
TAB Journal Summer 2019 - 10
TAB Journal Summer 2019 - 11
TAB Journal Summer 2019 - 12
TAB Journal Summer 2019 - 13
TAB Journal Summer 2019 - 14
TAB Journal Summer 2019 - 15
TAB Journal Summer 2019 - 16
TAB Journal Summer 2019 - 17
TAB Journal Summer 2019 - 18
TAB Journal Summer 2019 - 19
TAB Journal Summer 2019 - 20
TAB Journal Summer 2019 - Cover3
TAB Journal Summer 2019 - Cover4
https://www.nxtbook.com/ygsreprints/AABC/G118248AABC_Spring2020
https://www.nxtbook.com/ygsreprints/AABC/G116302AABC_Winter2020
https://www.nxtbook.com/ygsreprints/AABC/G114573_AABC_Fall2019
https://www.nxtbook.com/ygsreprints/AABC/G111085_tab_summer2019
https://www.nxtbook.com/ygsreprints/AABC/g108931_tab_spring2019
https://www.nxtbook.com/ygsreprints/AABC/g104992_tab_winter2019
https://www.nxtbook.com/ygsreprints/AABC/g100221_tab_fall2018
https://www.nxtbook.com/ygsreprints/AABC/g97743_tab_summer2018
https://www.nxtbook.com/ygsreprints/AABC/g94804_tab_spring2018
https://www.nxtbook.com/ygsreprints/AABC/g91043_tab_winter2018
https://www.nxtbook.com/ygsreprints/AABC/g86727_tab_fall2017
https://www.nxtbook.com/ygsreprints/AABC/g81312_tab_summer17
https://www.nxtbook.com/ygsreprints/AABC/g78003_tab_spring17
https://www.nxtbook.com/ygsreprints/AABC/g73432_tab_winter17
https://www.nxtbook.com/ygsreprints/AABC/g7002_tba_fall2016
https://www.nxtbook.com/ygsreprints/AABC/g65897_tab_summer2016
https://www.nxtbook.com/ygsreprints/AABC/g62758_tab_spring16
https://www.nxtbook.com/ygsreprints/AABC/tab_winter2016
https://www.nxtbook.com/ygsreprints/AABC/tab_fall2015
https://www.nxtbook.com/ygsreprints/AABC/tab_summer2015
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https://www.nxtbook.com/ygsreprints/AABC/g48663_aabc_winter2015
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https://www.nxtbook.com/ygsreprints/AABC/g36202_aabc_summer2013
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https://www.nxtbook.com/ygsreprints/AABC/g19912nxtbk
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