Nordyne P3RA-030K, P3RA-060K, P3RA-048K, P3RA-042K, P3RC-030K Owner's Manual

10 and 12 SEER

Single Package Air Conditioner

Single Package Air Conditioner

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 air conditioner was designed to
do it efficiently. Efficiency means less cost to you while keeping you comfortable.

WHY YOUR 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 dehumidi-

fied. Then the cycle begins again.

SECTION t. OWNER INFORMATION

OPERATING INSTRUCTIONS

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 inter-
locked 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 ex-
ceeds the thermostat setting.

To Shut Off Air Conditioner

If you have a heating/cooling thermostat:

1. Turn the system switch to "Heat" or "Off."

2. Turn the thermostat to the desired heating
temperature setting.

3. If you are turning yourairconditionerofffor
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 I):

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 aM 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'sworking right, clean or change
filters and make any needed adjustments.

In addition, follow these simple rules:

1. Never runyour system without filter. Ifyou
do, the coolingcoils will get dirty and may

become dogged.

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. Ifyou get chilly, turn itup a degree

at a time until comfort is restored.

3. It takes longer for an air conditionerto cool
your dwelling than it does for your furnace

to heat it. So... don't turnthe uniton and

expect a dramatic drop in temperature, at
least notdght away. Ifyourhome ishotand

humid, the temperature will drop slowly.

4. Check your filters every ten days in sum-

mer to see if they are dirty. To keep them

clean, use a mild solutionofdetergent 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 andthat 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.

if your air conditioner still isn'tworking, call your

nearest distributor.

Cooling Furnace

Thermostat Thermos1

Double Throw

Double Po_ Switch

3"o Air Conditio TM To Furnace

Figure 1. Thermostat Interlock System

2

SECTION 2. INSTALLER
INFORMATION

GENERAL

Read the following instructions completely
before performing the installation,

These instructionsare for the use of qualified

personnel specially trained and experienced in
the installation of this type of equipment and
related system components. Some states re-
quire 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 de-
signed for outdoor installationonly and can be
readily connected into the high static duct
system of a home. The only connections
needed for installation are the supply and return
ducts, the line voltage, and thermostat wiring.
A complete air conditioning system typically

consists of:

• Single Package Air Conditioner

• Home Fittings Kit

• Unit Fittings Kit

• Thermostat

The single package air conditioner is com-

pletely assembled, factory wired, and factory
run tested. The units are ready for easy and

immediate installation.

PRE-INSTALLATION CHECK

Before any installationis attempted, the cooling

load of the area to be conditioned must be
calculated and a system of the proper capacity

selected. Itis 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 installationof
this type of equipment. Local codes and
regulations take precedence over any recom-

mendations contained in these instructions.
Consult local building codes and the National

Electrical Code (ANSI Cl) for special installa-

tion requirements.

Inspecting Equipment: All units are securely
packed at the time of shipment and, upon

arrival, should be carefully inspected for dam-
age. Claims for damage (apparent or con-

cealed) should be filed immediately with the
carrier.

INSTALLATION

1. SELECT THE BEST LOCATION FOR

THE AIR CONDITIONING UNIT

IMPORTANT: DO NOT PLACE UNIT UNDER
THE HOME.

• 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 fi'om the home, and if possible,
in a direction with the prevailing wind.

• De not place the unit in a confined space.

• If practical, place the air conditioner where it

and the ducts will be shaded from the after-
noon sun when the heat load is greatest.

• Try to select a site for the unitthat is as close

as possible to the proposed return grille
location.

• Keep inmind that the length ofthe supply and

return ducts should be kept to a minimum with
no sharp radiused bends.

2. 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 posi-
tion and do not run for several hours.

Then run unit for a few seconds. Do
this three or four times with five min-

utes between runs.

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.

a. Remove the bands from around the unit.
b. Unfold the top and bottom cap flanges.

c. Carefully remove the top cap and tube.

6ft.

Figure 2. Minimum Unit Clearances

3. INSTALL THE RETURN AND SUPPLY
AIR FITTINGS ON THE UNIT

The supply and returnfittings are included with
select models. If supplied, the duct fittings are
shipped in the supply duct. They attach to the
unitopenings with a flange and bead arrange-

ment, secured with two sheet metal screws.
Note: For ease of access, install fitting before

positioningunitin final location.

SUPPLY DUCT
Positionthe supplyduct collar,ifsupplied,sothe

edge ofthe unitopening fitsbetween the flange
and the bead. Overlap the collar ends keeping
the small screw holes underneath. Align the

holes inthe crimped area and installone screw.

Note: It may be necessary to loosen the four
screws that hold the transition duct in order to

installthe supply fitting. Re-tighten when instal-
lation 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. Ifthe unit has a 14"

return, follow these instructions.

10 SEER Return

Model eia. (in)

2 Ton 12
2 1/2 Ton 12

3 Ton 12
3 1/2 Ton 12

4 Ton 14

5 Ton 14

12 SEER Return

Model Dia. (in)

2 Ton 12
2 1/2 Ton 12

3 Ton 12
3 1/2 Ton 14

4 Ton 14

Align the slots with the holes in the collar and

install two screws. Position the collar over the
opening and align the four notches inthe collar

with the four dimples in the panel. Using self-

ddlling screws (10-16x.5) attach the collar to

the rear panel.

4. LOCATING AND INSTALLING THE RE-

TURN AIR ASSEMBLY

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 avail-
able. If desired, the return opening can be

located inside a closet with Iouvered doors that
have an open area equal to or greater than the

12"x 20" grille furnished. The return airgrille can

be placed in the wall of acloset 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 hew the floor joist

:ILTER

CUT FLOOR

Supply Air Return Air

Figure 3. Return and Supply Air Fittings

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Figure 4. Return Air Box

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 (approxi-
mately 12-1/4" x 14-1/4"), cut the hole through

the floor so that the box will fit between the floor

joists. Careshould betakenwhen cuttingthrough

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 orforthe insulated
duct.

Set the box into the opening and fasten with
screws or nails. Put the filter and return air grille

in place.

5. LOCATING AND INSTALLING THE
SUPPLY DAMPER(S)

CAUTION:

When a home is not equipped with a

make-ready kit means must be pro-

vided to prevent simultaneous opera-
tion of the heating and cooling units. A

heat/cool thermostat is available for
this purpose.

When installing this air conditioning
system in conjunction with a furnace,

a damper must be installed in the fur-
nace base assembly to prevent cold
air being discharged around the heat
exchanger. Damage to the heat ex-
changer and asphyxiation may occur

ifa damper is not installed.

Figure 5. Supply Damper

nearest register. The round supply opening in

the slanted side of the damper should face the

side of the home where the air conditioner is
located. To locate the center of the heat duct,

first cut a small hole in the fiberboard below the

duct at the desired location. After locating the
duct center, cut a hole approximately 3/4" larger

than the damper opening in the fiberboard. Cut
a 9-1/8" x 13-1/8" hole in the duct and bend over

all tabs flat on the inside of the heat duct. After
inserting the damper into the duct, bend over all

tabs flat on the inside of the heat duct. Seal the
opening between the fiberboard and damper or

flexible duct.

DUCTINGSYSTEM

DUCT REQUIREMENTS
The supply duct system, including the number

and type of registers, will have much more

effect on the performance ofan air conditioning
system than any other factor. The duct must

be sufficiently large to conduct an adequate
amount of air to each register.

THE AIR CONDITIONING OUTPUT OF THE
SYSTEM WILL NOT COOL THE HOME IF
THE AiR IS LOST TO THE OUTSIDE
THROUGH LEAKS IN THE DUCT SYSTEM.
ALSO, DUCTS WHICH ARE COLLAPSED OR

RESTRICTED BY FOREIGN OBJECTS WILL
PREVENT ADEQUATE AIR FLOW.

Check with the furnace manufacturer
for damper requirements. Failure to

install the required furnace damper
may invalidate code agency listing and

limited warranty on the furnace.

When locating the supply damper(s), carefully

check floor joists and frame members that
could interferewith the installation ofthe damper

or flexible duct. Ideally, the damper should be
located in the bottom of the main duct, forward

ofcenter ofthe home, at least three feet from the

Note: For highly resistive duct systems it may
be necessary to add an additional return air duct

and or supply to achieve maximum perfor-

mance and prevent coil icing and refrigerant

flood back.

CONNECTING THE RETURN AND SUPPLY

AIR FLEXIBLE DUCTS

a.

The supply duct for all units istwelve inches
in diameter. The return duct may be 12" or

14" diameter depending on unit size. (See

Table on page 4).

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