ASHRAE Journal - July 2022 - 60

Dedicated Outdoor Air Systems
Provide Energy Effi cient IAQ Solutions
Built to Perform
Low-sound condenser fans come
as standard and provide
an average sound power
reduction of 5 to 8 decibels when
Introducing outdoor air into a building is
critical to ensure proper indoor air quality
in the space. Greenheck's pre-engineered
rooftop ventilator models RV and RVE
with energy recovery are ideal for 100%
outdoor air, variable air volume, and single
zone applications. The comprehensive
line of DOAS units include models from
500 to 18,000 cfm available with 3 to 70
tons of packaged cooling and 75 to 1,200
mbh heating. These factory-tested units
incorporate high-performance features
and energy-saving options to meet your
application requirements.
Built to Last
The RV/RVE comes with a painted cabinet
as standard using exterior coatings
that are tested to withstand the most
severe conditions and maintain the
integrity of the cabinet. Two-inch double
wall construction with R13 injected
foam insulation prevents condensation
formation and reduces thermal loss
for energy savings. The injected foam
insulation also adds extra strength to the
cabinet and improves sound attenuation
for quieter operation.
compared to standard condenser
fans. This reduction in sound power
results in a perceived sound level
reduction of up to 50% allowing
for more installation fl exibility in
sound sensitive applications. A lead
electronically commutated (EC) motor
is also standard for increased system
effi ciency, providing additional sound
power reduction at part load conditions.
An optional 16:1 high turndown furnace
can maintain comfortable discharge air
temperatures at part-load conditions.
The high turndown furnace will reduce
overshooting setpoint temperatures,
which in turn decrease furnace cycling.
As heating demand and airfl ow vary,
a high turndown furnace is desirable,
especially when demand is low.
Enhanced fi ltration options up to a MERV
14 Rating are available to exceed industry
standards for cleaner indoor air.
An inverter compressor option, available
from 3 to 70 tons, improves part-load
effi ciencies by 15 to 20% on average
compared to a digital scroll compressor,
and can improve the Integrated Energy
Effi ciency Radio (IEER) up to 22.1.
Inverter compressors not only reduce
the unit's energy consumption but also
provide tight temperature and humidity
control with quieter operation.
Easy to Operate
A factory-programmed microprocessor
controller can operate stand-alone or
integrate with a building management
system. This controller operates the unit in
a safe and energy effi cient manner while
controlling temperature and humidity.
Greenheck's microprocessor controller
comes standard with a web user interface
allowing the unit to be viewed and
controlled from a web browser.
Learn more at https://www.greenheck.
com/products/air-conditioning/dedicatedoutdoor-air-systems
YEARS
P.O.
Box 410 * Schofield, WI 54476 * 715.359.6171 * greenheck.com

https://www.greenheck.com/products/air-conditioning/dedicated-outdoor-air-systems https://www.greenheck.com/products/air-conditioning/dedicated-outdoor-air-systems https://www.greenheck.com/products/air-conditioning/dedicated-outdoor-air-systems http://www.greenheck.com

ASHRAE Journal - July 2022

Table of Contents for the Digital Edition of ASHRAE Journal - July 2022