Nordyne Q4SD-X24K, Q4SD-X36K, Q4SD-X30K, Q4SD-X42K, Q4SD-X60K Installation Instructions Manual

13 SEER Single Package Heat Pump

TM

Installation Instructions

These instructions are primarily intended to assist qualifi ed individuals expe­rienced in the proper installation of heating and/or air conditioning appliances.
Some local codes require licensed installation/service personnel for this type
equipment. All installations must be in accordance with these instructions and
with all applicable national and local codes and standards.

Read these instructions thoroughly before starting the installation. Follow all
precautions and warnings contained within these instructions and on the unit.

IMPORTANT

SECTION 1. OWNER INFORMATION

5

4

2

3

1

6

WINTER HEATING

1. Outdoor air enters the heat pump.

2. The cold, heat-transfer section (outdoor coil)
extracts the heat from the air as the refrigerant
evaporates from a liquid to a cold gas.

3. The refrigerant, compressed to a hot gas by
the heat pump, carries the heat to the heat­transfer section (indoor coil).

4. The hot, heat-transfer section (indoor
coil) releases the heat as the refrigerant
condenses from a gas to a liquid.

5. The blower circulates the heat throughout
the home via the supply duct.

6. The refrigerant returns to the outdoor coil
and evaporates once again to absorb more
heat.

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

The Manufacturer warrants the heat pump to be
free from defects in material or workmanship for a
period of one year. 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 specifi c 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.

5

4

3

6

2

1

SUMMER COOLING

1. Indoor air enters the return air duct.

2. The cold, heat-transfer section (indoor coil)
extracts the heat from the air as the refrigerant
evaporates from a liquid to a cold gas.

3. The refrigerant, drawn to the heat pump and
compressed to a hot gas, carries the heat
outdoors.

4. The hot, heat-transfer section (outdoor coil)
releases the heat as the refrigerant condenses
from a gas to a liquid.

5. The heat pump (outdoor fan) discharges the
heat to the outside air.

6. The refrigerant returns to the indoor coil
and evaporates once again to absorb more
heat.

3. Adjusting or calibrating of thermostat.

To avoid misunderstandings at a later date,
carefully review these responsibilities with your
dealer or service company.

The heat pump system will heat and cool your
home and save your energy dollars.

During the summer, a heat pump cools a house
by absorbing heat from within the house and
exhausting it outdoors. During the winter, a heat
pump heats a house by absorbing heat outdoors
and exhausting it indoors. This is an effi cient
heating means because you pay for “moving”
heat from outdoors to indoors, but do not pay
to generate the heat.

2

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 six 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.

SYSTEM
MODE

FAN
SWITCH

TEMPERATURE
SENSOR

Figure 1. Typical Thermostat

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.

SPECIFICATIONS

Single Package Heat Pumps are designed for
outdoor rooftop or ground level slab installations.
The units are shipped ready for horizontal duct
connections and are easily converted for down
fl ow applications.

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 at the 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 six 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 or AUX 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 used as a source of
heat. Sustained use of electric resistance heat in
place of the heat pump will result in an increase
in electric utility costs.

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

All models are shipped from the factory with
the following:

1. Zero clearance to combustibles

2. Multi-speed direct-drive blower.

3. Compressor Anti-short-cycle timer for
single phase models.

4. Blower Speed Relay.

5. Horizontal or Down flow duct
connections.

The unit dimensions are shown in Figure 3.

Cooling

Thermostat

R

Double Throw

Double Pole Switch

To Heat Pump

Furnace

Thermostat

R

To Furnace

Figure 2. Thermostat Interlock System

3

Optional fi eld-installed electric heater kits are
available in 5 kw through 20 kw heating capacities.
A separate installation instruction document
for the electric heaters and their application
accompanies this one. A two stage heat 24VAC
thermostat should be used with electric heater
kits installed.

SAFETY CONSIDERATIONS

It is the responsibility of the installer to ensure
that the installation is made in accordance with
all applicable local and national codes.

and regulations take precedence over any
recommendations contained in these instructions.
All electrical wiring must be made in accordance
with local codes and regulations and with the
National Electric Code (ANSI/NFPA 70) or in
Canada the Canadian Electric Code Part 1 CSA
C.22.1. Air Ducts must be installed in accordance
with the standards of the National Fire Protection
Association “Standards for Installation of Air
Conditioning and Ventilation Systems” (NFPA
90A), “Standard for Installation of Residence
Type Warm Air Heating and Air Conditioning
Systems” (NFPA 90B), these instructions and
all applicable local codes.

WARNING:

Improper installation, service,
adjustment, or maintenance may
cause explosion, fi re, electrical shock
or other hazardous conditions which
may result in personal injury or property
damage. Unless otherwise noted in these
instructions, only factory authorized kits
or accessories may be used with this
product. Noncompliance may void the

unit’s warranty.

Labels, Tags — When working with this

equipment, follow all precautions in the literature,
on tags, and on labels provided with the unit
and/or approved fi eld installed kits. The type
of hazard and severity are described on each
label or tag.

Pressures Within The System — This
equipment contains liquid and gaseous
refrigerant under high pressure. Installation or
servicing should only be performed by qualifi ed
trained personnel thoroughly familiar with this
type equipment.

INSTALLATION REQUIREMENTS

Equipment Check — Before beginning the

installation, verify that the unit model is correct for
the job. The unit model number is printed on the
data label. All units have been securely packaged
at the point of shipment. After unpacking the unit,
carefully inspect it for apparent and concealed
damage. Claims for damage should be fi led with
the carrier by the consignee.

Requirements and Codes — The installer
must comply with all local codes and regulations
which govern this type equipment. Local codes

NFPA publications are available by writing:

National Fire Protection Association
Batterymarch Park
Quincy, Maine 02269

Unit Location — This heat pump is designed only
for outdoor installations. Choosing the location of
the unit should be based on minimizing the length
of the supply and return ducts. Consideration
should also be given to availability of electric
power, service access, noise, and shade.
Suffi cient clearance for unobstructed airfl ow
through the outdoor coil must be maintained in
order to achieve rated performance See Figure

4 for minimum clearances to obstructions.

Air Filters — A suitable air fi lter must be installed

in the return air system. Air fi lter pressure drop
must not exceed 0.08 inches w.c. at 300 fpm.

Condensate Drain — Condensate is removed
from the unit through the 3/4” female pipe fi tting
located on the front side of the unit. See Figure

5. Install a 2 inch condensate trap in the drain
line of the same size and prime with water. When
connecting rigid drain line, hold the female fi tting
with a wrench to prevent twisting. Do not over
tighten! Refer to local codes and restrictions for
proper condensate disposal requirements.

UNIT INSTALLATION

Ground Level — When installing the unit at

ground level, provide a concrete mounting pad
separate from the building foundation. The
pad must be level to insure proper condensate
disposal and strong enough to support the unit’s
weight. Refer to Figure 3. Make sure the slab is
a minimum of 2” above the grade and in an area
that drains well. See Figure 6.

4

DOWNFLOW

13.5

16.0

13.7

13.5

16.0

12.45

11.75 22.75

55.8

C

HORIZONTAL

SUPPLY DUCT

OPENING HORIZONTAL

RETURN DUCT

OPENING

4.0

CONDENSING

COIL

5.0

8

4.00

SUPPLY DUCT

OPENING

24 9/10

3/4" NPT Female
Drain Connector

30

27 1/5

23 3/5

B

1 4/5

1 3/4 Ø Power Entry (Capped)

1 1/4 Ø Power Entry

22/25 Ø Control Wiring Entry

13 3/10

12

13 1/2

A

16

23 1/2

Top View

CG

47 1/2

16

13 1/2

12

DOWNFLOW

RETURN DUCT

OPENING

Side View

Model Number

Q4SD-/PPH1SD

X24 450 28.0 25.5 39.0 35.3
X30 455 28.0 25.5 39.0 35.3
X36 460 28.0 25.5 39.0 35.3

X42 565 29.5 26.0 43.0 39.3
X48 570 29.5 26.0 43.0 39.3
X60 580 29.5 26.0 43.0 39.3

Weight

Unit

4

Back View

Center of Gravity Height (in inches)

C

AB

Figure 3. Dimensions

with base rails without base rails

5

36"

36"

0"

Figure 4. Minimum Clearances

Rigging and Hoisting — The unit should be lifted

using slings and spreader bars. The spreader
bars are necessary to prevent damaging the
top of the unit’s cabinet. Make sure that the
lifting equipment is adequate for the load. Refer
to Figure 3 for unit weights. Keep the unit in
an upright position at all times. For rooftop

installations, remove and discard the two
supports attached beneath the unit.

72"

36"

CAUTION:

All panels must be securely in place
when rigging and hoisting.

The rigging must be located outside the unit’s
center of gravity. Refer to Figure 3 for center of
gravity locations.

WARNING:

To avoid the risk of property damage
or personal injury; it is the rigger’s
responsibility to insure that whatever
means are used to hoist the unit are
safe and adequate.

Condensate Drain

Figure 5. Condensate Drain

6

Rooftop — For rooftop installations use the
appropriate accessory roof curb and follow all
instructions included with it. Make sure the two
supports beneath the unit have been removed.
Locate the unit according to local building codes
and ordinances. The curb must be level to insure
proper condensate drainage. See Figure 7.

The roof must be capable of handling the weight of
the unit. See Figure 3 for unit weights. Reinforce
the roof if required.

AIR DUCTS

This unit is designed only for use with a supply
and return duct. Air ducts should be installed in
accordance with the standards of the National
Fire Protection Association “Standard for
Installation of Air Conditioning Systems” (NFPA
90A), “Standard for Installation of Residence Type
Warm Air Heating and Air Conditioning Systems”
(NFPA 90B), and all applicable local codes.

Design the duct work according to methods
described by the National Warm Air Heating