Manufacturer of Quality Air Conditioning and Heating Products • www.islandaire.com • sales@islandaire.com • (800)-886-2759
3
Applications (
cont.
)
Application
Considerations
It is important for air conditioning systems to be prop-
erly sized for each application in order to achieve desired
temperature and humidity levels. It is strongly recom-
mended that a professional engineer match the PTAC
units with the building structure and climate.
The following application considerations are all impor-
tant in choosing the proper PTAC system for the build-
ing structure.
UNDERSIZING
If a PTAC unit is undersized (cooling capacity is less than
required capacity for an application), the unit will not be
able to cool the space down to the desired temperature
during very hot days.
OVERSIZING
If a PTAC unit is oversized (cooling capacity is greater
than required capacity for the specific application), the
unit will cool the space down to the desired temperature
too quickly creating a cool, yet excessively humid, space.
AIR INFILTRATION
Excessive air infiltration can intensify problems associ-
ated with undersizing or oversizing a PTAC unit. This
can be the cause of insufficient cooling, dehumidifica-
tion, or heating. Sources of air infiltration include vents,
gaps around windows and doors, and improperly sealed
floors, ceiling or wall joints.
Guaranteed Quality
Each Islandaire unit is designed to operate quietly and
efficiently and is backed by the best warranty program
available. Standard warranty is one year parts and labor
including five year compressor part only warranty or two
year parts only including five year compressor part only
warranty.
Whether it is an exact replacement unit or a new con-
struction project, Islandaire is the smart choice for all
your air conditioning and heating needs.
Indoor Air Quality - DR.
PTAC (EZDR Series Units
Only)
In addition to an already quiet unit, we have
co-developed an indoor air quality option called
Dr.PTAC.
Dr.PTAC is currently designed as a two-stage system.
The primary stage conditions room air and tempers
the air to acceptable air quality levels. The secondary
stage brings in conditioned outside air at a rate of up
to 55 CFM, to compensate for toilet exhaust and room
occupancy, and continuously pressurizes the room. The
secondary stage is initiated by an outdoor humidistat that
allows the unit to condition the incoming fresh air about
50% RH. The system can be calibrated to run at higher
outdoor RH levels, but the recommended maximum set
point 50% outdoor RH. When outdoor RH levels are
above the set point, the secondary compressor is initiated
and conditions make up air below the set point.
The secondary fan continuously runs allowing fresh, con-
ditioned, make-up air at a rate of up to 55 CFM (leaving
coil CFM) to enter the room. The unit is manufactured
in accordance to ARI, UL, CSA standards for the primary
side and AHAM and UL standards for the secondary
side.
