Nordyne Q3RA-036K, Q3RC-036K, Q3RA-060K, Q3RA-048K, Q3RA-030K Installation Manual

10 and 12 SEER
Single Package Heat Pump

Single Package Heat Pump

IMPORTANT:

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

Your heat pump isaunique, all weather comfort-

control system appliance. The basic operation
of the heating/cooling system is described and

illustrated on page 1 of this manual. The
surprising fact that heat exists in air even at
below-freezing temperatures isactually the basic
law of physics which the heat pump uses to
provide energy saving heating comfort. At

outdoor temperatures of 47° Fahrenheit or (or

8° Celsius), your heat pump can deliver
approximately 2 to 3 units of heat energy per
each unit ofelectrical energy used, as com pared

to a maximum of only 1 unit of heat energy

produced with conventional heating systems.
During the cooling season, the heat pump
reverses the flow of the heat-absorbing
refrigerant to become an energy-efficient, central

air conditioner.

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SECTION 1. OWNER INFORMATION

Your heat pump will heat and cool your home
year round, saving your energy dollars. During
the summer, a heat pump performs like any

normal air conditioner. That is, the excess heat
energy inside the home is absorbed by the

refrigerant and exhausted outside the home.
During the winter months, a heat pump performs

like an air conditioner run in reverse. That is,
available heat energy outside the home is

absorbed by the refrigerant and exhausted inside
the home. This is an efficient heating means
because you only pay for "moving" the heat from
the outdoors to the indoor area. You do not pay

to generate the heat, as is the case with more
traditional furnace designs.

FAN SWITCH

SYSTEM SWITCH

TEMPERATURE SCALES

TEMPERATURE SELECTOR

Figure 1. Typical Thermostat

It is the sole responsibility of the homeowner to
make certain that the heat pump has been
correctly set upand adjusted to operate properly.

The manufacturer warrants the heat pump to be
free from defects in workmanship or material for
a period of one year. A warranty certificate with
full details is included with the heat pump.

However, we will not be responsible for any
costs found necessary to correct problems due
to improper setup, improper installation,

adjustments, improper operating procedure on
the part of the user, etc.

Some specific examples of service calls which

are not included in the limited warranty are:

1. Correcting wiring problems in the electrical
circuit supplying the heat pump.

2. Resetting circuit breakers or other switches.

3. Adjusting or calibrating of thermostat.

To avoid misunderstandings at a later date,
carefully review these responsibilities with your

dealer or service company.

OPERATING INSTRUCTIONS

To Operate Your Heat Pump For Cooling --

1. Set the thermostat system switch to COOL

and the thermostat fan switch to AUTO. (See

Figure 1)

2. Set the thermostat temperature selector tothe
desired cooling temperature. The outdoor unit

fan, the indoor blower, and the compressor
will all cycle on and off to maintain the indoor

temperature at the desired cooling level.

NOTE: Ifthe thermostat temperature level is re-
adjusted, or if the thermostat system switch is

re-positioned, the outdoor unit fan and the
compressor may not start immediately. A

protective timer circuit holds the compressor
and the outdoor fan off for approximately five

minutes following a previous operation or the
interruption of the main electric power.

To Operate Your Heat Pump For Heating --

1. Set the thermostat system switch for HEAT
and thethermostat fan switch toAUTO. (See

Figure 1)

2. Set the thermostat temperature selector to
the desired heating temperature. The outdoor

unit fan, the indoor blower, and the

compressor will all cycle on and off to

maintain the indoor temperature atthe desired
heating level.

NOTE: If the thermostat temperature level is re-
adjusted, or if the thermostat system switch is

re-positioned, the outdoor unit fan and the
compressor may not start immediately. A

protective timer circuit holds the compressor
and the outdoor fan off for approximately five

minutes following a previous operation or the
interruption of the main electrical power.

Emergency Heat -- Some thermostats will
includea system switch position termed EM HT
orAUX HT, etc. This isa back-upheating mode
tobe used only if there is a suspected problem,

With the system switch set to EM HT, etc., the
compressor and outdoor fan will be locked off

and supplemental heat (electric resistance

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heating)will be usedas a sourceof heat.
Sustaineduseof electricresistanceheatin

placeoftheheatpumpwillresultinanincrease
inelectricutilitycosts.

Defrost -- During cold weather heating

operation, the outdoor unit will develop a coating
of snow and ice on the heat transfer coil. This is

normal and the unit will periodically defrost itself.
During the defrost cycle, the outdoor fan will
stop, while the compressor continues to run and
heat the outdoor coil, causing the snow and ice

to melt. During defrost, there may be some
steam rise from the outdoor unit as the warm coil

causes some melted frost to evaporate.

6ft.

24"

12"

12"

SECTION 2. INSTALLER INFORMATION

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 installati0n 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 high static duct system

of a home. The only connections needed for
installationare the supply and return ducts, the

line voltage, and thermostat wiring. A complete
air conditioning system typically consists of:

• Single Package Heat Pump

• Home Fittings Kit

• Unit Fittings Kit

• Thermostat
The single package air conditioner iscompletely

assembled, factory wired, and factory runtested.
The units are ready for easy and immediate

installation.
Use of components other than those specified

may invalidate ARI Certification, Code Agency
Listing, and limited warranty on the air

conditioner.

PRE-INSTALLATION CHECK
Before any installationis attempted, the cooling

load of the area to be conditioned must be

Figure 2. Minimum Unit Clearances

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 withall 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.

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.

INSTALLATION

1. SELECT THE BEST LOCATION FOR

THE HEAT PUMP UNIT

IMPORTANT: DO NOT PLACE UNIT
UNDER THE HOME.

Select a solid, level positionl 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.

Donotplacetheunitinaconfinedspace.
Ifpractical,placetheheatpumpwhereitand

theductswillbeshadedfromtheafternoon

sunwhentheheatloadisgreatest.
Trytoselectasitefortheunitthatisasclose

as possibleto the proposedreturngrille
location.

Keepinmindthatthelengthofthesupplyand
returnductsshouldbekeptto aminimum

withnosharpradiusedbends.

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

position and do not run for several

hours. Then run unit for a fewseconds.

Do this three or four times with five

minutes between runs.

The supply and return fittings are included with
select models. If supplied, the duct fittings are
shipped in the supply duct. They attach to the
unit openings with a flange and bead
arrangement, secured with two sheet metal
screws. Note: For ease of access, install fitting
before positioning unit in final location.

SUPPLY DUCT

Position the supply duct collar, if supplied, 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. Re-tighten 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

mannerasthesupplyduct. Iftheduct hasa 14"
return, follow these instructions.

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

c. Carefully remove the top cap and tube.

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

Align the slots with the holes in the collar and

installtwo 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. On some models a 14" duct collar is
provided for the return duct.

ou'°°':i

SupplyAir ReturnAir

Figure 3. Return and Supply Air Fittings

4. LOCATING AND INSTALLING THE

RETURN 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
available. If desired, the return opening can be

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 Oia. (in)

2 Ton 12
2 1/2 Ton 12

3 Ton 12

3 1/2 Ton 14

4 Ton 14

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_RILLE

--ILTER

- RETURN AIR

• CUT FLOOR

Figure 4. Return Air Box

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 air grille can
be placed in the wall ofa 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.

When locating the supply damper(s), carefully
check floor joists and frame members that

could interfere with the installation ofthe damper
or flexible duct. Ideally, the damper should be

located in the bottom of the main duct, forward
of center of the home, at least three feet from
the nearest register. The round supply opening
in the slanted side of the damper should face
the side of the home where the heat pump 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 fiat on the inside of the heat duct. Seal the

opening between the fiberboard and damper or

flexible duct.

DUCTING SYSTEM

After determining the location of the return air

opening, start the installation from under the

home by cutting asmall hole inthe 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 12-1/4" x 20-1/4"),

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, ifthe 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.

5. LOCATING AND INSTALLING THE

SUPPLY DAMPER(S)

DUCT REQUIREMENTS
The supply duct system, including the number

and type of registers, will have much more
effect on the performance the system than
any other factor. The duct must be sufficiently
large to conduct an adequate amount of air to
each register.

THE HEAT PUMP SYSTEM WILL NOT COOL
OR HEAT 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.

Note: For highly resistiveductsystems itmay be

necessary to add an additional return air duct to
achieve maximum performance.

CONNECTING THE RETURN AND SUPPLY

AIR FLEXIBLE DUCTS

The return duct may be 12" or 14" diameter
depending on unit size. (See Table on page 4)

a. The supply duct for all units is twelve inches

in diameter.

b. The flexible ducts can be connected to the

corresponding fittings with the clamps
provided with the ducts. Note: Allconnections
should be leak tight or a loss in cooling
capacity will result.

Figure 5. Supply Damper

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