ASHRAE Journal - April 2021 - 23
percentage points of efficiency, " Benson said. " Needs
change over time, and we simply don't get persistence
[from contractors and O&M teams] when things are
really difficult to understand or manage. "
Benson advises design engineers to follow a good, intuitive strategy. A simpler choice will always have higher
performance in the long term than a theoretically better,
but abandoned option.
" Because of how we traditionally communicate
sequences, it can also be a real challenge to ensure systems get programmed as the designer intended. When
there is ambiguity, we depend on creative license to fill
in the gaps, " he said.
Don't Reinvent the Wheel
Knowing and adhering to an owner's BAS requirements and guidelines from the start is critical.
" This can affect everything from technology choices,
point naming, sequences of operation and the way
information is presented on a graphical interface. The
more standardized a system is for an owner, the easier it
is for O&M staff to get trained and utilize it effectively, "
said Benson.
When an owner does not have requirements or guidelines, Benson recommends engineers use ASHRAE
Guideline 13-2015 or ASHRAE Guideline 36-2018 as
resources, and speak up if a owner's references need to
be revised.
" Respecting the owner's existing plans and providing
feedback is a great way to build solid trust and a path to
continued partnership, " he said.
REGISTER
TODAY
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Avoid Independent Controls for the Same Outcome
Limited budgets often require engineers to scale back
a renovation's scope, said Benson. This situation can create challenges.
Benson said common issues happen when controls of
related systems can't communicate, such as when a VAV
is upgraded, but a baseboard radiator in the same space
is left in place with original and independent controls.
" More often than not, these systems will eventually
fight, causing discomfort and big impacts to efficiency, "
he said. " Take the time to tie things together and ensure
sequences remain well-coordinated. "
Benson recommends owners consider adjusting scope
in ways that support this, such as renovating fewer
rooms but upgrading all necessary components.
lennoxcommercial.com
APRI L 2021
ashrae.org
ASHRAE JOURNAL
23
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ASHRAE Journal - April 2021
Table of Contents for the Digital Edition of ASHRAE Journal - April 2021
Contents
ASHRAE Journal - April 2021 - Intro
ASHRAE Journal - April 2021 - Cover1
ASHRAE Journal - April 2021 - Cover2
ASHRAE Journal - April 2021 - 1
ASHRAE Journal - April 2021 - Contents
ASHRAE Journal - April 2021 - 3
ASHRAE Journal - April 2021 - 4
ASHRAE Journal - April 2021 - 5
ASHRAE Journal - April 2021 - 6
ASHRAE Journal - April 2021 - 7
ASHRAE Journal - April 2021 - 8
ASHRAE Journal - April 2021 - 9
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ASHRAE Journal - April 2021 - 11
ASHRAE Journal - April 2021 - 12
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ASHRAE Journal - April 2021 - 17
ASHRAE Journal - April 2021 - 18
ASHRAE Journal - April 2021 - 19
ASHRAE Journal - April 2021 - 20
ASHRAE Journal - April 2021 - 21
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ASHRAE Journal - April 2021 - 27
ASHRAE Journal - April 2021 - 28
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ASHRAE Journal - April 2021 - 37
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ASHRAE Journal - April 2021 - Cover3
ASHRAE Journal - April 2021 - Cover4
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