GSZH5 Service Manual
56
PRODUCT DESIGN
This section gives a basic description of cooling unit
operation, its various components and their basic
operation. Ensure your system is properly sized for heat
gain and loss according to methods of the Air Conditioning
Contractors Association (ACCA) or equivalent.
Condensing Unit
The condenser air is pulled through the condenser coil
by a direct drive propeller fan. This condenser air is then
discharged out of the top of the cabinet. These units are
designed for free air discharge, so no additional resistance,
like duct work, shall be attached.
The suction and liquid line connections on present models
copper. Front seating valves are factory installed to accept
normal installation is factory installed in the condensing
unit.
GSX, GSZ, ANX, ANZ, ASX, ASZ, SSX, SSZ, DSX, DSZ,
sizes and use R-410A refrigerant. They are designed for
208/230 volt single phase applications.
GSX/GSZ *****3 models are available in 3, 4, and 5 ton
sizes and use R-410A refrigerant. They are designed for
208/230 volt 3-phase applications.
ASX, ASZ, DSX and DSZ R-410A model units use the
Copeland Scroll “Ultratech” Series compressors which are
also have Copeland® ComfortAlert diagnostics.
ANX, ANZ, GSX, GSZ, SSX, SSZ, VSX, and VSZ R-410A
refrigerant. There are several design characteristics which
compressors. “Ultratech” Series scroll compressors will
not have a discharge thermostat. Some of the early model
scroll compressors required discharge thermostat.
“Ultratech” Series scroll compressors use “POE” or
polyolester oil which is NOT compatible with mineral
oil based lubricants like 3GS. “POE” oil must be used if
additional oil is required.
Coils And Blower Coils
MBR/MBE blower cabinets are designed to be used as a
two-piece blower and coil combination. MBR/MBE/MBVC
blower sections can be attached to cased evaporator coil.
This two-piece arrangement allows for a variety of mix-
MBVC blower cabinets use a variable speed motor that
MBE blower cabinets are approved for applications with
cooling coils of up to 0.8 inches W.C. external static
pressure. The MBE models includes a feature that allows
The MBR blower cabinet uses a PSC motor. It is approved
for applications with cooling coils of up to 0.5 inches W.C.
external static pressure.
The MBR/MBE blower cabinets with proper coil matches
or horizontal left operation. All units are constructed with
R-4.2 insulation. In areas of extreme humidity (greater than
80% consistently), insulate the exterior of the blower with
insulation having a vapor barrier equivalent to ductwork
insulation, providing local codes permit.
are designed for horizontal applications.
AR*F, ASPF, ASUF, ASPT, AMST
Multi-Position Air Handler
These one-piece multi-position air handlers are used with
R-410A and are available in 2 to 5 ton sizes with optional 3
The AR*F unit’s blower design includes a PSC motor and
is compatible with heat pumps and cooling applications.
ASUF and ASPT units use an EEM blower motor and are
compatible with heat pumps and cooling applications.
This appliance can be installed in the vertical or left
product is designed for zero inches (0 inches) clearance;
however, adequate access for service or replacement
must be considered without removing permanent structure.
This unit can be installed on a platform when deemed
necessary.
In an attic installation a secondary drain pan must be
provided by the installer and placed under the entire unit
with a separate drain line properly sloped and terminated
in an area visible to the owner. This secondary drain pan
is required in the event that there is a leak or main drain
blockage. Closed cell insulation should be applied to the
drain lines in unconditioned spaces where sweating may
occur.
external duct static pressure.