Gree GA Series Product Data page 21

FIELD- -INSTALLED ACCESSORIES (CONT.)
APPLICATION CONSIDERATIONS
Installation instructions are shipped with all PTAC
Subbase Fuse Kit
units. It is important that air conditioning systems be
Part No.: SUBBASE- -FUSE- -15A
properly sized and installed for each application in
Part No.: SUBBASE- -FUSE- -20A
order to achieve the desired temperature and humidity
levels within the space to be conditioned. It is
Part No.: SUBBASE- -FUSE- -30A
strongly recommended that a professional engineer
The fuse kit provides in- -line over- -current protection
match the PTAC units with the building structure and
at the unit when required by NEC (National Electric
climate.
Code) or local codes.
The following application considerations are all
important in choosing the proper PTAC system for
Subbase Power Disconnect Switch
the building structure.
Part No.: SUBBASE- -SWITCH
Undersizing
The subbase power disconnect 2- -pole switch
If a PTAC unit is undersized (cooling capacity is less
provides a recessed power disconnect for the PTAC
than required load for an application), the unit
unit when required by NEC or local codes.
will not be able to cool the space down to the desired
IMPORTANT: The fuse Kits & disconnect
temperature during very hot days. The result could be
switch accessories can only be used with the
warm and humid or warm and dry conditioned space.
electrical or hardwired subbase
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,
Leveling Legs
dehumidification only takes place when the unit is
Part No.: LEVELING- -LEGS
operating. The result of this type of application in a
hot and/or humid climate would be a cool, yet Leveling legs attach easily to the wall sleeve and
offer accurate leveling and support for units without
excessively humid, space.
a subbase. Leveling legs are adjustable from 3- -1/4 to
Air Infiltration
5- -1/2 inches (82.6 to 139.7 mm).
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.
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
Subbase Fuse Kit
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.
Power Disconnect Switch Assembly
Leveling Legs
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