TAB Journal Fall 2020 - 15

ensure that they accomplish what they
intend to, without creating other problems
in the process.
This author agrees that increasing the
amount of outdoor air (OA) ventilation
provided in a building's HVAC system,
and reducing the amount of recirculated
(or return air) utilized, is a viable
means of restricting the spread of the
COVID-19 virus, but this cannot be done
indiscriminately with any or all HVAC
air handling units serving a given facility.
Neither can this recommendation be
carried out without carefully analyzing
the facility as an integrated whole without
producing catastrophic results.
Unless HVAC air handling equipment
has been specifically designed and sized
for delivering 100 percent conditioned
outdoor airflow, unit cooling coils and unit
heating coils will not be able to handle
the increased cooling and/or heating
loads associated with large increases in
the amount of OA handled by the HVAC

air handling equipment either during
summertime operation (large increase
in hot/humid outdoor airflow) or during
wintertime operation (large increase in
colder/dryer outdoor airflow). Arbitrarily
increasing the OA airflow on typical,
commercially available, HVAC air
handling equipment will almost certainly
result in cooling coil capacity failure
(summertime) or heating coil capacity
failure (wintertime).
Such failures might include, but are not
necessarily limited to, the following:
Summertime Operation
1.	Significantly higher HVAC air handling
equipment discharge air temperatures
and higher space relative humidity
levels in the areas served by this
equipment.
2.	Increased complaints from facility
occupants concerning high space
temperatures and high relative humidity
levels.

3.	Significant amounts of surface
condensation generated at supply air
grilles and portions of uninsulated
supply air ducts (especially when the
supply air ductwork is located in the
above ceiling plenum space).
4.	Greatly increased potential for
developing indoor air quality issues due
to the development of ideal conditions
for organic growth on interior facility
surfaces (i.e. presence of moisture due
to surface condensation, higher HVAC
air handling equipment discharge
air temperatures, and higher space
temperature and relative humidity levels).
5.	Potential flooding of spaces located
adjacent to, or below, HVAC air
handling equipment, due to overflowing
of equipment's cooling coil condensate
drain pan from excess condensate
(equipment condensate drain pan was
not sized to handle the amount of
condensation encountered by utilizing
100 percent OA).

AUTO DUCT TRAVERSE /HANDSFREE OPERATION

How It Works



The instrument attaches to the
duct for handsfree operation



Reads the duct width



Drill holes thru bore (prevent bit
from walking) at locations that
corresponds to the width



Reads duct depth



Read airflow at locations that
corresponds to the depth of the
duct thru each hole



You get the same pinpoint
accurate result each time

You can save 50% in time and
make more money

www.pinstruments.expert
www.pinstrument.expert
info@pinstruments.expert
info@pinstruments.expert

TAB Journal Fall 2020

***If performing duct traversal gets easier than this, it may be illegal***
***Our traverse kit comes with instruments for both round and rectangular ducts to
read up to 72 " in diameter and width***

AUTO DUCT TRAVERSE /HANDSFREE OPERATION

15


http://www.pinstruments.expert

TAB Journal Fall 2020

Table of Contents for the Digital Edition of TAB Journal Fall 2020

TAB Journal Fall 2020 - Cover1
TAB Journal Fall 2020 - Cover2
TAB Journal Fall 2020 - 1
TAB Journal Fall 2020 - 2
TAB Journal Fall 2020 - 3
TAB Journal Fall 2020 - 4
TAB Journal Fall 2020 - 5
TAB Journal Fall 2020 - 6
TAB Journal Fall 2020 - 7
TAB Journal Fall 2020 - 8
TAB Journal Fall 2020 - 9
TAB Journal Fall 2020 - 10
TAB Journal Fall 2020 - 11
TAB Journal Fall 2020 - 12
TAB Journal Fall 2020 - 13
TAB Journal Fall 2020 - 14
TAB Journal Fall 2020 - 15
TAB Journal Fall 2020 - 16
TAB Journal Fall 2020 - 17
TAB Journal Fall 2020 - 18
TAB Journal Fall 2020 - 19
TAB Journal Fall 2020 - 20
TAB Journal Fall 2020 - Cover3
TAB Journal Fall 2020 - Cover4
https://www.nxtbook.com/ygsreprints/AABC/tab-journal-winter-2021
https://www.nxtbook.com/ygsreprints/AABC/G122399AABC_Fall2020
https://www.nxtbook.com/ygsreprints/AABC/G120138AABC_Summer2020
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
https://www.nxtbook.com/ygsreprints/AABC/g50853_aabc_spring2015
https://www.nxtbook.com/ygsreprints/AABC/g48663_aabc_winter2015
https://www.nxtbook.com/ygsreprints/AABC/g46741_aabc_fall2014
https://www.nxtbook.com/ygsreprints/AABC/g43965_aabc_summer2014
https://www.nxtbook.com/ygsreprints/AABC/g42323_aabc_spring2014
https://www.nxtbook.com/ygsreprints/AABC/g40447_aabc_winter2014
https://www.nxtbook.com/ygsreprints/AABC/g38793_aabc_fall2013
https://www.nxtbook.com/ygsreprints/AABC/g36202_aabc_summer2013
https://www.nxtbook.com/ygsreprints/AABC/g34728_aabc_tabspring2013
https://www.nxtbook.com/ygsreprints/AABC/g32884_aabc_tab-winter2013
https://www.nxtbook.com/ygsreprints/AABC/g30873_aabc_tabjournal_fall2012
https://www.nxtbook.com/ygsreprints/AABC/g28877_aabc_tabjournal_summer2012_2
https://www.nxtbook.com/ygsreprints/AABC/g25452aabc_tabspring12
https://www.nxtbook.com/ygsreprints/AABC/g23327aabc_fall_2011
https://www.nxtbook.com/ygsreprints/AABC/g21694aabc_summer11_final
https://www.nxtbook.com/ygsreprints/AABC/g19912nxtbk
https://www.nxtbook.com/ygsreprints/AABC/g19105_aabc_tabjournalwinter11
https://www.nxtbook.com/ygsreprints/AABC/AABC/p17871_aabc_fall10
https://www.nxtbook.com/ygsreprints/AABC/g16041aabc_tabjournal
https://www.nxtbookmedia.com