Nordyne Q4 User Manual
Single Package Heat Pump
Installation Instructions
460 Volt Q4 Series
IMPORTANT
Read these instructions thoroughly before starting the installation. Follow
all precautions and warnings contained within these instructions and on
the unit.
These instructions are primarily intended to assist qualified 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.
TABLE OF CONTENTS
OWNER INFORMATION .......................................................................................................... 3
SPECIFICATIONS..................................................................................................................... 4
SAFETY CONSIDERATIONS................................................................................................... 5
• Labels, Tags................................................................................................................ 5
• Pressures Within The System..................................................................................... 5
INSTALLATION REQUIREMENTS .......................................................................................... 5
• Equipment Check........................................................................................................ 5
• Requirements and Codes ........................................................................................... 5
• Unit Location ............................................................................................................... 5
• Air Filters ..................................................................................................................... 5
• Condensate Drain ....................................................................................................... 5
UNIT INSTALLATION............................................................................................................... 7
• Ground Level............................................................................................................... 7
• Rigging and Hoisting................................................................................................... 7
• Rooftop........................................................................................................................ 7
AIR DUCTS ............................................................................................................................... 7
• Unconditioned Spaces. ............................................................................................... 7
• Acoustical Duct Work .................................................................................................. 8
• Horizontal to Down flow Conversion........................................................................... 8
• Clearance .................................................................................................................... 8
ELECTRICAL WIRING ............................................................................................................. 8
• Line Voltage ................................................................................................................ 8
• Blower Speed.............................................................................................................. 9
• Low Voltage Connections ........................................................................................... 9
• Room Thermostat ....................................................................................................... 9
• Defrost Cycle Timer .................................................................................................... 9
START-UP AND SYSTEM CHECK ........................................................................................ 10
• Air Circulation ............................................................................................................ 10
• System Cooling ......................................................................................................... 10
• System Heating......................................................................................................... 10
UNIT MAINTENANCE............................................................................................................. 11
• Refrigerant Charging................................................................................................. 11
• Routine Maintenance ................................................................................................ 11
BLOWER TABLE .................................................................................................................... 12
CHARGING CHARTS ........................................................................................................ 13-16
ACCESSORY KIT TABLE ...................................................................................................... 17
WIRING DIAGRAM ................................................................................................................. 18
2
SECTION 1. OWNER INFORMATION
5
4
2
3
6
1
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.
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.
2. Resetting circuit breakers or other switches.
3. Adjusting or calibrating of thermostat.
NORDYNE warrants the heat pump to be free
from defects in material or workmanship for a
period of one year. A warranty certificate with
full details is included with the heat pump. However, NORDYNE 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.
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 efficient
heating means because you pay for “moving”
heat from outdoors to indoors, but do not pay to
generate the heat.
3
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 readjusted, or if the thermostat system switch is repositioned, 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)
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.
FAN SWITCH
TEMPERATURE SELECTOR
Figure 1. Typical Thermostat
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.
SPECIFICATIONS
Model Series Q4 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 flow applications.
NOTE: If the thermostat temperature level is readjusted, or if the thermostat system switch is repositioned, the outdoor unit fan and the
compressor may not start immediately. A
protective timer circuit holds the compressor
and the outdoor fan off for approx-imately 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.
4
Cooling
Thermostat
R
Double Throw
Double Pole Switch
To Heat Pump
Furance
Thermostat
R
To Furance
Figure 2. Thermostat Interlock System
All models are shipped from the factory with the
following:
1. Zero clearance to combustibles
2. Multi-speed direct-drive blower.
3. Blower Speed Relay.
4. Horizontal or Down flow duct connections.
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 filed with the carrier by the
consignee.
The unit dimensions are shown in Figure 3.
Optional field-installed electric heater kits are
available in 9 kw and 15 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.
!
WARNING:
Improper installation, service,
adjustment, or maintenance may cause
explosion, fire, 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 field 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 qualified
trained personnel thoroughly familiar with this
type equipment.
INSTALLATION REQUIREMENTS
Equipment Check — Before beginning the
installation, verify that the unit model is correct
Requirements and Codes — The installer must
comply with all local codes and regulations
which govern this type equipment. Local 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.
NFPA publications are available by writing:
National Fire Protection Association
Batterymarch Park
Quincy, Maine 02269
Unit Location — The Q4 series 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. Sufficient clearance for
unobstructed airflow 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 filter must be installed
in the return air system. Air filter 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 fitting
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
fitting with a wrench to prevent twisting. Do not
over tighten! Refer to local codes and
restrictions for proper condensate disposal
requirements.
5
SUPPLY
24.9
3/4" NPT Female
Drain Connector
28.7
26.0
22.4
B
1.8
1.75 Ø Power Entry (Capped)
1.25 Ø Power Entry
13.3
0.88 Ø Control Wiring Entry
13.5
A
16.0
23.512.0
Top View
CG
13.5
47.5
16.0
12.0
RETURN
C
11.2
SUPPLY RETURN
16.0
13.5
11.2
16.0
13.5
10.0 24.9
55.8
Side View Back View
Model No.
Unit
Weight
Q4SA-036 340 28.0 26.0 33.7 31.3
Q4SA-048 345 28.0 26.0 33.7 31.3
Q4SA-060 400 29.5 26.5 37.7 35.3
6
Center of Gravity Height (in inches)
AB
with base rails without base rails
C
Figure 3. Dimensions
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