Gree GA Series Product Data page 43

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