Nordyne P3RX, P3RA-024, P3RA-030, P3RA-036, P3RA-042 User Manual And Installation Instructions
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USER'S MANUAL AND INSTALLATION INSTRUCTIONS
P3RX Series - Export Models
Single Package Air Conditioner
Single Package Air Conditioner
IMPORT ANT
Read this owner information to become familiar with the capabilities and use of your appliance. Keep this with literature on
other appliances where you have easy access to it in the future. If a problem occurs, check the instructions and follow
recommendations given. If these suggestions don’t eliminate your problem, call your installing contractor or distributor in
your area.
INTRODUCTION
Most any air conditioner will keep you cool. Our NORDYNE air conditioner was designed to do it efficiently. Efficiency means
less cost to you while keeping you comfortable.
WHY YOUR NORDYNE AIR CONDITIONER WORKS SO WELL, SO QUIETLY
1. Air is cooled by a large evaporator coil. Moisture is also removed from the air by this same coil.
2. Air is then delivered through the main duct, via registers, into your home.
3. Return air is drawn through the return register.
4. This air enters the unit, passes through the evaporator coil, is cooled and dehumidified. Then the cycle begins again.
TABLE OF CONTENTS
Owner Information ............................................................................................................................ 3
Operating Instructions ................................................................................................................. 3
Before You Call A Serviceman ................................................................................................... 3
Installer Information .......................................................................................................................... 4
General ....................................................................................................................................... 4
Pre-Installation Check................................................................................................................. 4
Installation................................................................................................................................... 4
Ducting Systems .............................................................................................................................. 6
Duct Requirements ..................................................................................................................... 6
Connecting Return and Air Supply Flexible Ducts...................................................................... 6
Condensate Drain ............................................................................................................................ 8
Electrical Connections ..................................................................................................................... 8
Electrical Service - High Voltage .............................................................................................. .. 8
Overcurrent Protection ................................................................................................................ 8
Locating the Thermostat.............................................................................................................. 8
System Operation............................................................................................................................. 9
Pre-Start Check List .................................................................................................................... 9
Start-Up Procedure ..................................................................................................................... 9
Wiring Diagrams ........................................................................................................................ 10-12
Single Phase ............................................................................................................................ 10
Three Phase ........................................................................................................................ 11-12
Refrigerant Charging Tables ..................................................................................................... 13-14
SECTION 1. OWNER INFORMATION
OPERATING INSTRUCTIONS
In addition, follow these simple rules:
1. Never run your system without filter. If you do, the cooling
coils will get dirty and may become clogged.
To Turn On Air Conditioner
If you have a heating/cooling thermostat:
1. Set the system switch to "Cool."
2. Set the thermostat at the temperature level you desire.
3. Turn the power on. Your air conditioner should start as
soon as room temperature rises above the setting on the
thermostat.
If you have one thermostat for heating and another for
cooling, they must be interlocked to prevent simultaneous
operation (See Figure 1):
1. Turn the heating thermostat to its lowest possible setting.
2. If the cooling thermostat has an "On/Off" switch, turn it
"On."
3. Set the cooling thermostat to the desired temperature.
4. Turn the power on. Your air conditioner should start when
room temperature exceeds the thermostat setting.
To Shut Off Air Conditioner
If you have a heating/cooling thermostat:
2. Set your thermostat at the comfort level you wish -- and
then leave it alone. Let it control the operation of the air
conditioning system. If you get chilly, turn it up a degree
at a time until comfort is restored.
3. It takes longer for an air conditioner to cool your dwelling
than it does for your furnace to heat it. So . . . don’t turn the
unit on and expect a dramatic drop in temperature, at least
not right away. If your home is hot and humid, the
temperature will drop slowly.
4. Check your filters every ten days in summer to see if they
are dirty. To keep them clean, use a mild solution of
detergent and water on washable types. Replace non
washable filters.
5. Keep your outdoor condenser coil clean. You can hose it
down when it gets dirty.
If your air conditioner isn't working:
1. Make sure the fuses are not blown or that your circuit
breakers are on.
2. See that your thermostat is set at the desired temperature
and that your system's switch is on "Cool."
3. For free air flow, make sure your return register is not
covered and that the filter is clean.
4. Check the outdoor condenser coil and make sure it is clean
and not clogged with grass or leaves.
1. Turn the system switch to "Heat" or "Off."
2. Turn the thermostat to the desired heating temperature
setting.
3. If you are turning your air conditioner off for the winter or an
extended period, shut off the power to the air conditioner.
If you have one thermostat for heating and another for
cooling, they must be interlocked to prevent simultaneous operation (See Figure 1):
1. Turn your cooling thermostat "Off" or to its highest setting.
2. Turn the heating thermostat to the desired temperature.
3. If you are turning your air conditioner off for the winter or an
extended period, shut off the power to the air conditioner.
BEFORE YOU CALL A SERVICEMAN
Let your serviceman check your system at the start of each
air conditioning season. He will make sure it's working right,
clean or change filters and make any needed adjustments.
If your air conditioner still isn't working, call your nearest
distributor.
Cooling
Thermostat
R
To Air Conditioner
Double Throw
Double Pole Switch
Furance
Thermostat
R
To Furance
Figure 1. Thermostat Interlock System
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SECTION 2. INSTALLER INFORMATION
INSTALLATION
GENERAL
Read the following instructions completely before
performing the installation.
These instructions are for the use of qualified personnel
specially trained and experienced in the installation of this
type of equipment and related system components. Some
states require installation and service personnel to be licensed.
Unqualified individuals should not attempt to interpret these
instructions or install this equipment.
The single packaged air conditioners are designed for outdoor
installation only and can be readily connected into the existing
high static duct system of a manufactured home. The only
connections needed for installation are the supply and return
ducts, the line voltage, and thermostat wiring. A complete air
conditioning system consists of:
• Single Package Air Conditioner
• Manufactured Home Fittings Kit
• Unit Fittings Kit
• Thermostat
The single package air conditioner is completely assembled,
factory wired, and factory run tested. The units are ready for
easy and immediate installation.
PRE-INSTALLATION CHECK
Before any installation is attempted, the cooling load of the
area to be conditioned must be calculated and a system of the
proper capacity selected. It is recommended that the area to
be conditioned be completely insulated and vapor sealed.
The installer should comply with all local codes and regulations
which govern the installation of this type of equipment. Local
codes and regulations take precedence over any
recommendations contained in these instructions. Consult
local building codes and the National Electrical Code (ANSI
CI) for special installation requirements.
The electrical supply should be checked to determine if
adequate power is available. If there is any question concerning
the power supply, contact the local power company.
1. UNPACK THE UNIT
It is recommended that the unit be unpacked at the
installation site to minimize damage due to handling.
CAUTION:
!
Do not tip the unit on its side. Oil may enter the
compressor cylinders and cause starting trouble.
If unit has been set on its side, restore to upright
position and do not run for several hours. Then
run unit for a few seconds. Do this three or four
times with five minutes between runs.
a. Remove the plastic bands from around the unit.
b. Unfold the top and bottom cap flanges.
c. Carefully remove the top cap and tube.
2. SELECT THE BEST LOCATION FOR THE AIR
CONDITIONING UNIT (See Figure 2)
Select a solid, level position, preferably on a concrete slab,
slightly above the grade level, and parallel to the home.
The hot condenser air must be discharged up and away
from the home, and if possible, in a direction with the
prevailing wind.
There should be no obstructions within twelve inches of the
coil which could block the movement of the condenser air.
Do not place the unit in a confined space.
If practical, place the air conditioner where it and the ducts
will be shaded from the afternoon sun when the heat load
is greatest.
Try to select a site for the unit that is as close as possible
to the proposed return grille location.
Keep in mind that the length of the supply and return ducts
should be kept to a minimum with no sharp radiused bends.
6 ft.
24"
12"
IMPORTANT: DO NOT PLACE UNIT UNDER THE HOME.
Inspecting Equipment: All units are securely packed at the
time of shipment and, upon arrival, should be carefully
inspected for damage. Claims for damage (apparent or
concealed) should be filed immediately with the carrier.
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12"
12"
Figure 2. Minimum Unit Clearances
Transition Duct Screws
14" Duct Dimples
Supply Air
Return Air
Figure 3. Return and Supply Air Fittings
3. INSTALL THE RETURN AND SUPPLY AIR FITTINGS
ON THE UNIT (See Figure 3)
The supply and return fittings are shipped in the supply duct.
They attach to the unit openings with a flange and bead
arrangement, secured with two furnished screws. Note: For
ease of access, install fitting before positioning unit in final
location.
SUPPLY DUCT
Position the supply duct collar so the edge of the unit opening
fits between the flange and the bead. Overlap the collar ends
keeping the small screw holes underneath. Align the holes in
the crimped area and install one screw.
Note: It may be necessary to loosen the four screws that hold
the transition duct in order to install the supply fitting. Retighten when installation is complete.
Tap collar as necessary to ensure engagement with unit
opening and install second screw. Tighten first screw. Rotate
collar clockwise so joint is near three o’clock position.
RETURN DUCT
The 12" return duct is installed in the same manner as the
supply duct. If the unit has a 14" return, follow these
instructions.
Model Retur n Di a. ( i n)
P3RA-024( ) 12
P3RA-030( ) 12
P3RA-036( ) 12
P3RA-042( ) 12
P3RA-048( ) 14
P3RA-060( ) 14
Figure 4. Return Air Box
Align the slots with the holes in the collar and install two
screws. Position the collar over the opening and align the four
notches in the collar with the four dimples in the panel. Using
self-drilling screws (10-16x.5) attach the collar to the rear
panel.
4. LOCATING AND INSTALLING THE RETURN AIR
ASSEMBLY (See Figure 4)
To avoid complications, locate and install the return air
assembly first. The return air box with grille and filter
(Figure 4) should not be located in heavy traffic areas like
hallways or center of rooms. A good spot is in a corner or
under a table, if a minimum two inch clearance is
available. If desired, the return opening can be located
inside a closet with louvered doors that have an open area
equal to or greater than the 12" x 20" grille furnished. The
return air grille can be placed in the wall of a closet and
the air ducted into the filter box through a boxed-in area at
the closet floor level. Make sure the filter is readily
accessible.
After determining the location of the return air opening, start
the installation from under the home by cutting a small hole
in the fiber underboard to determine how the floor joist location
will affect cutting the opening needed for the box. Floor joists
generally are located on 16" centers, leaving 14-3/8" between
joists. After measuring the return air box (approximately 121/4" x 14-1/4"), cut the hole through the floor so that the box
will fit between the floor joists. Care should be taken when
cutting through carpeting to avoid snags. In most installations
it will be necessary to cut a similar hole in the fiberboard
directly under the hole in the floor. However, if the floor is
more than ten inches deep, it will only be necessary to cut a
hole for the collar on the return air box or for the insulated duct.
Set the box into the opening and fasten with screws or nails.
Put the filter and return air grille in place.
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