Hardwire kit (PN: HARDWIRE-KIT-xxA)
shall be required if an accessory power cord
is not used. The hardwire kit provides a
permanent connection to the unit and shall have
36” (914 mm) of flexible steel conduit and a
plug-in connector for easy connect/disconnect.
Insulated Polymer Wall Sleeve (PN:
SLEEVE-INSUL-1PK) shall be made from a
molded polymer, with factory installed
insulation and a minimum flammability rating
of UL94-5V. The sleeve surface shall be
textured to prevent shine and hide scratches.
43
J.
Front Panel (supplied with chassis): Front
panel shall be constructed of a polymer material to
resist breakage and corrosion. It shall have a front
louvered surface with integrated control door and
air filters. The air filters shall be easily accessible
without removing the front panel from the chassis.
K.
Air Filters: The chassis shall contain air filters,
with a minimum of 40% arrestance per ASHRAE
Standard 52.1. Two easily accessible front access
supply air filters, shall be interchangeable,
washable and permanent type. The vent filter shall
be a one--piece, removable and washable type
filter.
L.
Bi--Directional Discharge Grille: Bi--directional
polymer discharge grille shall resist corrosion and
breakage. It shall be easily set to direct air at 40
degrees from horizontal or 80 degrees from
horizontal. This non--metallic
discharge grille
shall be cool to the touch during the heating cycle.
M.
Ventilation: The chassis shall have a manual
adjustable fresh air vent with a concealed manual
control. The vent control shall allow a maximum
of up to 65 CFM of fresh air to be drawn into the
room when the indoor fan is operating and the
door is open.
N.
High Efficiency Condensate Removal System:
The chassis shall have a condensate removal
system consisting of a condensate suction port, to
draw and atomize condensate, and a slinger ring
integrated in the outdoor fan, to disperse
condensate onto the condenser coil to be
evaporated.
O.
Accessories:
1.
Power Cord (PN: PWRCORD--xxxV--xxA)
accessory,
is
required
for
all
corded
applications.
2.
3.
4.
Deep Wall Metal Wall Sleeve (up to 28” /
711.2 mm.) (PN: SLEEVE--EXTxx--1PK) shall
be a one-- piece, extended wall sleeve, with
factory installed insulation and deep wall
baffles integrated.
5.
Sleeve Molding (PN: SLEEVE--MOLDING)
shall trim the wall sleeve to the existing wall to
hide wall joints and irregularities due to the
sleeve opening.
6.
Architectural Grille
(PN:GRILLE--PLA--xxxxx or
GRILLE--ALU--xxxxx)
shall be polymeric for long
durable life or painted aluminum for a superior
color match to the building.
7.
Subbase (PN: SUBBASE--xxxV--xxA) shall be
pre--assembled from the factory and UL listed.
Subbase options include:
—
Non-electrical
subbase:
The
non--electrical
subbase
shall
be
pre--assembled
and
provides
mechanical support and requires no
wiring.
—
Electrical subbase:
The electrical
subbase shall be pre--assembled with
factory--installed
electrical junction
box containing a receptacle for corded
units.
8.
Drain kit (PN: DRAIN--KIT--4PK): This
universal drain kit shall be used internally or
externally to route excess condensate
to a
drainage system. It can be field--installed on any
Carrier wall sleeve. The drain kit shall be
attached to the exterior right or left side of the
wall sleeve for external draining or may be
mounted to the bottom of the wall sleeve for
internal draining.
The drain kit shall include
both a straight tube and a 90
˚
bend tube.
9.
GA
Wall Thermostats
(PN: PN: TT-N-411 &
PN: TT-N-421) The digital wall thermostat shall
have a large LCD display with backlighting,
operate with 24VAC, be non-programmable,
easy to use and provide maximum guest comfort.
5
APPLICATION CONSIDERATIONS
Installation instructions are shipped with all PTAC
units. It is important that air conditioning systems be
properly sized and installed for each application in
order to achieve the desired temperature and humidity
levels within the space to be conditioned. It is
strongly recommended that a professional engineer
match the PTAC units with the building structure and
climate.
The following application considerations are all
important in choosing the proper PTAC system for
the building structure.
Undersizing
If a PTAC unit is undersized (cooling capacity is less
than required load for an application), the unit
will not be able to cool the space down to the desired
temperature during very hot days. The result could be
warm and humid or warm and dry conditioned space.
Oversizing
If a PTAC unit is oversized (cooling capacity is
greater than required load for the specific application),
the unit will cool the space down to the desired
desired temperature too quickly.
The unit will cycle on and off, however,
dehumidification only takes place when the unit is
operating. The result of this type of application in a
hot and/or humid climate would be a cool, yet
excessively humid, space.
Air Infiltration
Excessive air infiltration can intensify problems
associated with undersizing or oversizing a PTAC
unit. This can be the cause of insufficient cooling,
dehumidification, or heating. Sources of air
infiltration include vents, gaps around windows and
doors, and improperly sealed floors, ceilings or wall
joints.
GA
Condensate Removal
Gree’s GA series has a new condensate (water)
disposal system. The outdoor fan prop has a built in
slinger ring which draws condensate water through a
suction port built into the outdoor coil shroud. The
water passes though the suction port and is sprayed
on the warm outdoor coil for evaporation. Thus
providing better disposal of excess condensate and
improving unit operating efficiency.
It is normal and desirable to have some condensate
water in the ebase pan to boost operating efficiency.
NOTE: This unit will not always evaporate 100%
of the unit generated condensate and blown in
rain water. If it is necessary to control 100% of
the condensate, the Drain Kit (Part No.: DRAIN-
KIT-4PK) and a building condensate drain
system is recommended.
