Manufacturer of Quality Air Conditioning and Heating Products • www.islandaire.com • sales@islandaire.com • (800)-886-2759
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Applications (Cont.)
Each Islandaire unit is designed to operate quietly and
efficiently and is backed by the best warranty program
available. Standard warranty is for 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.
In addition to an already quiet unit, we have developed
an indoor air quality option called the DR.VTAC.
DR.VTAC is a two-stage system. The primary stage
conditions room air and tempers the air to acceptable
air quality levels. The secondary stage brings in 100%
continuously conditioned make up 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
to about 55% RH. The system can be calibrated to run at
higher outdoor RH levels, but the recommended maxi-
mum set point is 55% outdoor RH. When outdoor RH
levels are above the set point, the secondary compressor
is initiated and conditions make up air.
The secondary fan continuously runs allowing fresh,
conditioned, make-up air at a rate of up to 55 CFM (leav-
ing coil CFM) to enter the room. The unit is manufac-
tured in accordance to AHRI, UL, CSA standards for
the primary side and AHAM and UL standards for the
secondary side.
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 VTAC
units with the building structure and regional climate.
The following application considerations are all impor-
tant in choosing the proper VTAC system for the build-
ing structure.
undersizing
If a VTAC unit is undersized (cooling capacity is less
than required capacity for the specific application), the
unit will not be able to cool the space down to the desired
temperature during very hot days, causing excessive
power consumption.
oversizing
If a VTAC 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 VTAC 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.
