
PRODUCT DESIGN
3
Amana PCC Package Cooling Units are designed for out-
door installations only in either residential or light commer-
cial applications.
The connecting ductwork (Supply and Return) can be con-
nected for either horizontal or vertical airflow. In the vertical
application a matching Roof Curb is recommended.
Areturn airfiltermustbeinstalledbehindthereturnairgrille(s)
or provision must be made for a filter in an accessible loca-
tionwithinthereturnairduct.Theminimumfilterareashould
not be less than those sizes listed in the Specification Sec-
tion. Under no circumstances should the unit be operated
without return air filters.
A 3/4" pipe and external drain trap is provided for removal of
condensate water from the indoor coil. (Do not reduce the
drain line size).
Refrigerant flow control is achieved by use of restrictor ori-
fices.
Thesinglephaseunitsuse permanent split capacitors (PSC)
designcompressors. Startingcomponentsarethereforenot
required. A low MFD run capacitor assists the compressor
to start and remains in the circuit during operation.
The outdoor fan and indoor blower motors are single phase
capacitor type motors (PCC60's use ECM motors).
Air for condensing (cooling cycle) is drawn through the out-
door coil by a propeller fan, and is discharged vertically out
the top of the unit. The outdoor coil is designed for .0 static.
No additional restriction (ductwork) shall be applied.
Conditioned air is drawn through the filter(s), field installed,
across the coil and back into the conditioned space by the
indoorblower.
All models of PCC series package units use the Compliant
Scrollcompressor,thereare a number of designcharacteris-
ticswhicharedifferent from the traditional reciprocatingcom-
pressor.
- DuetotheirdesignScrollcompressorsareinherentlymore
tolerant of liquid refrigerant. NOTE: Even though the
compressorsectionofaScrollcompressor is more toler-
ant of liquid refrigerant, continued floodback or flooded
start conditions may wash oil from the bearing surfaces
causingprematurebearingfailure.
- TheseScrollcompressorsusewhiteoilwhichiscompat-
ible with 3GS. 3GS oil may be used if additional oil is
required.
- Operatingpressures andampdrawsmaydifferfromstan-
dard reciprocating compressors. This information may
be found in the "Cooling Performance Data" section.
LocationandClearances
36"
Maximum
Overhang
48" Minimum
Overhang
36" Side
Clearance
for Servicing
Recommended
Minimum 36"
Clearance for
Service Required 0" Minimum
Clearance to
Combustibles
Vinyl Coated
Canvas
Connections
Insulated
Return
Duct
Insulated
Supply
Duct
24" Clearance
(Condenser End)
Ininstallations where the unitis installed above groundlevel
andnot serviceable from the ground (Example: Roof Top in-
stallations)theinstallermust provide service platform forser-
vicepersonwithrailsorguardsinaccordancewithlocal codes
orordinancesorintheirabsencewiththelatesteditionofthe
UniformMechanical Code Section 305.
NOTE: Unitcanalsouse roof curb (and platformforleveling,
where necessary) to utilize bottom discharge.
WARNING
TOPREVENTPOSSIBLE PROPERTYDAMAGE,THEUNIT
SHOULDREMAININANUPRIGHTPOSITIONDURINGALL
RIGGING AND MOVING OPERATIONS. TO FACILITATE
LIFTINGAND MOVING IFACRANE ISUSED,PLACE THE
UNITINAN ADEQUATE CABLE SLING.
IMPORTANT: If using bottom discharge with roof curb,
ductwork should be attached to the curb prior to installing
the unit.
Refer to Roof curb Installation Instructions for proper curb
installation. Curbing must be installed in compliance with
the National Roofing Contractors Association Manual.