Gree GA Series Product Data page 35

INDOOR FAN PERFORMANCE DATA
APPLICATION CONSIDERATIONS
Installation instructions are shipped with all PTAC
units. It is important that air conditioning systems be
Model
properly sized and installed for each application in
order to achieve the desired temperature and humidity
GAE07AB-D Heat / Cool
levels within the space to be conditioned. It is
GAA07AB-D Heat Pump
strongly recommended that a professional engineer
match the PTAC units with the building structure and
GAE07AB-P Heat / Cool
climate. GAA07AB-P Heat Pump
The following application considerations are all
GAE09AB-D Heat / Cool
important in choosing the proper PTAC system for
GAA09AB-D Heat Pump
the building structure.
GAE09AB-P Heat / Cool
Undersizing
GAA09AB-P Heat Pump
If a PTAC unit is undersized (cooling capacity is less
GAE12AB-D Heat / Cool
than required load for an application), the unit
GAA12AB-D Heat Pump
will not be able to cool the space down to the desired
temperature during very hot days. The result could be
GAE12AB-P Heat / Cool
GAA12AB-P Heat Pump
warm and humid or warm and dry conditioned space.
Oversizing
GAE15AB-D Heat / Cool
If a PTAC unit is oversized (cooling capacity is
GAA15AB-D Heat Pump
greater than required load for the specific application),
the unit will cool the space down to the desired
GAE15AB-P Heat / Cool
desired temperature too quickly.
GAA15AB-P Heat Pump
The unit will cycle on and off, however,
*
Dry = Heat Mode or Fan Only Mode --- Indoor Standard CFM
dehumidification only takes place when the unit is
Wet = Cool Mode --- Indoor Standard CFM
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.
Dry CFM*
Voltage
Low
208 235
230 260
265 260
208 235
230 260
265 260
208 245
230 270
265 270
208 270
230 300
230 300
265 300
Condensate Removal
Gree's GA series has a new condensate (water)
Medium High
disposal system. The outdoor fan prop has a built in
slinger ring which draws condensate water through a
250 270
suction port built into the outdoor coil shroud. The
280 300
water passes though the suction port and is sprayed
on the warm outdoor coil for evaporation. Thus
280 300
providing better disposal of excess condensate and
improving unit operating efficiency.
250 270
280 300
It is normal and desirable to have some condensate
water in the ebase pan to boost operating efficiency.
280 300
NOTE: This unit will not always evaporate 100%
of the unit generated condensate and blown in
260 280
rain water. If it is necessary to control 100% of
290 310
the condensate, the Drain Kit (Part No.: DRAIN-
KIT-4PK) and a building condensate drain
290 310
system is recommended.
290 305
320 340
320 340
320 340
35
5
Wet CFM*
Low Medium
220 235
240 260
240 260
220 235
240 260
240 260
225 240
250 270
250 270
250 270
280 300
280 300
280 300
High
250
280
280
250
280
280
260
290
290
290
320
320
320