System Configuration - Gree GA Series Product Data

APPLICATION CONSIDERATIONS OUTDOOR AIR VENTILATION
Installation instructions are shipped with all PTAC
The unique vent system is activated by a two-
units. It is important that air conditioning systems be
position control. Fresh outside air is redirected by
properly sized and installed for each application in
the vent door to the indoor room. A molded plastic
order to achieve the desired temperature and humidity
filter prevents dirt and debris from entering the
levels within the space to be conditioned. It is
room side of the unit. The vent mechanism is made
strongly recommended that a professional engineer
from non corrosive material ensuring reliable
match the PTAC units with the building structure and
operation. Amagnet on the door and high-pressure
climate.
airflow create a tight, draft free seal when the vent
The following application considerations are all
door is closed.
important in choosing the proper PTAC system for
the building structure.
The vent will provide up to 65 cfm of fresh air.
Undersizing
BI- -DIRECTIONAL DISCHARGE
If a PTAC unit is undersized (cooling capacity is less
GRILLE
than required load for an application), the unit
will not be able to cool the space down to the desired
The discharge grille is constructed of durable
temperature during very hot days. The result could be
polycarbonate and is reversible. Air flows upward at a
warm and humid or warm and dry conditioned space.
40 degree angle to the floor but can easily be adjusted
Oversizing
to an 80 degree angle to the floor.
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,
DIGITAL KEYPAD AND
dehumidification, or heating. Sources of air
ELECTRONIC DISPLAY
infiltration include vents, gaps around windows and
doors, and improperly sealed floors, ceilings or wall
The digital keypad provides a simple to operate
joints.
control. The large, easy to press, "On/Off", "Fan
Speed", "Mode", "Setpoint Up" and "Setpoint Down"
buttons make the control easy to operate. LEDs are
used to show the operating conditions selected.
Large numbers are used to display the Setpoint, and if
configured, room air temperature.

SYSTEM CONFIGURATION

There are many different configuration possibilities,
through both dip switches and the digital keypad, that
allow you to configure the unit for your exact
application. See Owner's Manual for more detailed
information.
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%
Outdoor Air Ventilation
of the unit generated condensate and blown in
rain water. If it is necessary to control 100% of
Air discharge upward
the condensate, the Drain Kit (Part No.: DRAIN-
KIT-4PK) and a building condensate drain
system is recommended.
Air discharge outward (Default)
Reversible Polycarbonate Discharge Grille
Electronic Display
Dipswitch
Dip Switches
9
5
A07550
A07550
A07632
UP
Down
Freeze guard
Setpoint Limit 2
Setpoint Limit 1
Fan CON/CYC for cooling
Fan CON/CYC for heating
Wall Thermostat enable
Electric heat only (for Heat Pumps)
A07072