Nordyne Q3RD, Q3RD-030K, Q3RD-036K, Q3RD-048K, Q3RD-024K Installation Manual

13 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 isa unique, all weather comfort-
control system appliance. The basic operation

of the heating/cooling system is described and

illustrated on page 1of this man ual.The surprising
fact that heat exists inair even at below-freezing
temperatures is actually the basic law of physics

which the heat pump uses to provide energy
saving heating comfort. At outdoor temperatures

of 47 ° Fahrenheit (or 8° Celsius), your heat

pump can deliver approximately 2 to 3 units of
heat energy per each unit of electrical energy

used, as compared 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.

SECTION 1. OWNER INFORMATION

SYSTEM SWITCH

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.

It is the sole responsibility of the homeowner to
make certain that the heat pump has been

correctly set up and 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.

FAN SWITCH

TEMPERATURE SCALES

TEMPERATURE SELECTOR

Figure 1. Typical Thermostat

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 electric power.

To Operate Your Heat Pump For Heating --

1. Set the thermostat system switch for HEAT
and the thermostat fan switch to AUTO. (See

Figure 1)

2. Set the thermostat temperature selector to
the desi red heating tem peratu re. The outdoor

unit fan, the indoor blower, and the
compressor will all cycle on and off to
maintain the indoor temperature at the desi red

heating level.

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 to the
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: 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

include a system switch position termed EM HT
orAUX HT, etc. This is a back-up heating mode
to be 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

heating)will be usedas a sourceof heat.
Sustaineduse of electricresistanceheat in

placeoftheheatpumpwillresultinanincrease
in electricutilitycosts.

Defrost -- During cold weather heating

operation,theoutdoorunitwilldevelopacoating
ofsnowandiceontheheattransfercoil.Thisis

normalandtheunitwillperiodicallydefrostitself.

Duringthedefrostcycle,theoutdoorfanwill

stop,whilethecompressorcontinuestorunand
heattheoutdoorcoil,causingthesnowandice

to melt. Duringdefrost,theremaybe some
steamrisefromtheoutdoorunitasthewarmcoil

causessomemeltedfrosttoevaporate.

SECTION 2. INSTALLER INFORMATION

6ft.

12"

Figure 2. Minimum Unit Clearances

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 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 Heat Pump

• Home Fittings Kit
o 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.

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.

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

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 installation is attempted, the cooling

load of the area to be conditioned must be

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 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
returnductsshouldbekepttoa minimum

withnosharpradiusedbends.

2. UNPACK THE UNIT

It is recommended that the unit be unpacked at

the installation site to minimize damage due to
handling.

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 infinal 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.

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.

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

The supply and return fittings are included with
select models. If supplied, the duct fittings are

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 duct has a 14"
return, follow these instructions.

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-

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.

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

SupplyAir

Figure 3.

4

Return and Supply Air Fittings

Return Air

13 SEER Return Dia. (in)

2 Ton 12

2 1/2 Ton 14

3 Ton 14

3 1/2 Ton 14

4 Ton 14

:ILTER

RETURN AIR

CUT FLOOR

ISTS

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 inthe 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.

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

could interfere with the installation of the 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 inthe fiberboard. Cut

a 9-1/8" x 13-1/8" hole inthe 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.

DUCTING SYSTEM

After determining the location of the return air
opening, start the installation from under the
home bycutting asmall hole inthe fiber underboard

to determine how the floor joist location will affect
cutting the opening needed for the box. Floor

joists gene rally 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, 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.

5. LOCATING AND INSTALLING THE

SUPPLY DAMPER(S)

REGISTER

/

/

CLOSED

PUMPISOFF

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 resistive duct systems it may 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: All connections

should be leak tight or a loss in cooling
capadty will result.

Figure 5. Supply Damper

5