Nordyne R-410A User Manual
Outdoor Heat Pump
User’s Manual / Installation Instructions
Two Stage R-410A Split System
Premium Model Shown
IMPORTANT
Please read this information thoroughly and become familiar with the capabilities
and use of your appliance before attempting to operate or maintain this unit.
Keep this literature 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 NORDYNE Servicing
Contractor (Service PRO).
These instructions are primarily intended to assist qualifi ed individuals
experienced in the proper installation of this appliance. Some local codes
require licensed installation/service personnel for this type of equipment.
Please read all instructions carefully before starting the installation.
DO NOT DESTROY. PLEASE READ CAREFULLY AND
KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.
2
USER INFORMATION
Safety Information ........................................ 4
About the Heat Pump ................................... 4
Operating Instructions ................................. 4
Cooling Operation .......................................4
Heating Operation ...................................... 4
Emergency Heat .........................................4
Defrost Operation .......................................4
INSTALLER INFORMATION
Safety Information ........................................ 6
Pressures Within the System .....................6
Labels, Tags, and Precautions .................... 6
Brazing Operations .....................................6
General Information .....................................7
Outdoor Unit ...............................................7
Liquid and Suction Lines ............................ 7
Field Connections for Electrical Power
Supply.........................................................7
Site Preparation ............................................ 7
Unpacking the Equipment .......................... 7
Inspect for Damage .................................... 7
Preferred Location of the Outdoor Unit ....... 7
Facility Prerequisites .................................. 7
Minimum Circuit Ampacity .......................... 7
Maximum Fuse / Circuit Breaker Size ........7
Installing the Indoor Unit .............................7
Installing the Outdoor Unit ..........................7
Slab Mount ................................................ 7
Cantilever Mount ........................................ 7
Roof Mount ................................................8
Connecting Refrigerant Tubing Between
the Indoor and Outdoor Unit .......................8
General Information ....................................8
Filter Drier Installation ................................8
Optional Equipment .................................... 8
Electrical Connections .................................8
Pre - Electrical Checklist.............................8
Wiring Diagram / Schematic ....................... 8
Line Voltage ................................................ 8
Outdoor Unit Connections ..........................9
Control Circuit Wiring ..................................9
Thermostat Connections ............................ 9
Grounding ...................................................9
Low Pressure Switch ..................................9
Operating the Heat Pump for Automatic
Cooling and Heating ...................................5
Oper. the Indoor Blower Continuously ........5
Shutting the Heat Pump Off........................5
System Maintenance .................................... 5
Regular Cleaning ........................................5
Before You Call a Technician ...................... 5
Troubleshooting ............................................ 5
Warranty Information ...................................5
High Pressure Switch .................................9
TM
Comfort Alert
24VAC Power Wiring ............................10
Thermostat Demand Wiring .................10
Interpreting the Diagnostic LED’s .........10
LED Description ...................................10
Two - Speed Outdoor Fan Motor ..............11
Optional Equipment ..................................11
Transformer Upgrade Kit ......................11
Startup & Adjustments...............................11
Pre - Start Checklist .................................11
Thermostat ...............................................11
Outdoor Unit .............................................11
Functional Checkouts ................................11
Cooling .....................................................11
Heating .....................................................11
Indoor Blower ...........................................12
Short Cycle Protection ..............................12
Defrost Cycle Control ...............................12
Defrost Test Procedure .............................12
Anti Short Cycle Timer Test ......................13
Heating Mode .......................................13
Cooling Mode .......................................13
Optional Equipment ..................................13
Adjustment of Refrigerant Charge ............13
Charging R-410A Unit in AC Mode ..........13
Charging R-410A Unit in Heat Mode .......13
Cooling Charging Charts ...........................14
Heating Charging Chart .............................16
Troubleshooting ..........................................17
Diagnostics Module .........10
3
USER INFORMATION
SAFETY INFORMATION
IMPORTANT: Safety markings are used
frequently throughout this manual to designate
a degree or level of seriousness and should not
be ignored. WARNING indicates a potentially
hazardous situation that if not avoided, could
result in personal injury or death. CAUTION
indicates a potentially hazardous situation that
if not avoided, may result in minor or moderate
injury or property damage.
ABOUT THE HEAT PUMP
Your heat pump is a unique, all weather comfortcontrol appliance that will heat and cool your
home year round and provide energy saving
comfort. It’s an unknown fact that heat is always
in the air, even when the outside temperature is
below freezing. The heat pump uses this basic
law of physics to provide energy saving heat
during the winter months. For example, If the
outdoor temperature is 47° F (8° C), your heat
pump can deliver approximately 3.5 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.
In colder temperatures, the heat pump performs
like an air conditioner run in reverse. Available
heat energy outside the home is absorbed by
the refrigerant and exhausted inside the home.
This effi cient process means you only pay for
“moving” the heat from the outdoors to the indoor
area. You do not pay to generate the heat, as
with more traditional furnace designs.
During summer, the heat pump reverses the fl ow
of the heat-absorbing refrigerant to become an
energy-effi cient, central air conditioner. Excess
heat energy inside the home is absorbed by the
refrigerant and exhausted outside the home.
Fan
Mode
Figure 1. Digital Thermostat
System
Mode
Temperature
Selector
OPERATING INSTRUCTIONS
Please refer to the thermostat manufacturer’s
User manual for detailed programming
instructions.
Cooling Operation Only
1. Set the thermostat’s system mode to COOL
or AUTO and change the fan mode to AUTO.
See Figure 1
2. Set the temperature selector to the desired
temperature level. The outdoor fan,
compressor, and blower motor will all cycle
on and off to maintain the indoor temperature
at the desired cooling level.
NOTE: If the temperature level is re-adjusted, or
the system mode is reset, the fan and compressor
in the outdoor unit may not start immediately. A
protective timer circuit holds the compressor
and the outdoor fan off for approximately three
minutes following a previous operation or the
interruption of the main electrical power.
Heating Operation Only
1. Set the thermostat’s system mode to HEAT
or AUTO and change the fan mode to AUTO.
See Figure 1.
2. Set the temperature selector to the desired
temperature level. The compressor, outdoor
fan, and blower motor will cycle on and off to
maintain the indoor temperature at the desired
heating level.
NOTE: If the temperature level is re-adjusted, or
the system mode is reset, the fan and compressor
in the outdoor unit may not start immediately. A
protective timer circuit holds the compressor
and the outdoor fan off for approximately three
minutes following a previous operation or the
interruption of the main electrical power.
Emergency Heat
Some thermostats may include a system mode
called EM HT or AUX HT, etc. This is a backup heating mode that should only be used if a
problem is suspected. With the mode 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 Operation
During cold weather heating operation, the
outdoor unit will develop a coating of snow
and ice on the heat transfer coil. This is normal
4
USER INFORMATION
and the unit will defrost itself. This unit features
Adaptive Demand Defrost that monitors ambient
and coil temperatures to regulate the defrost
function accordingly.
At the beginning of the defrost cycle, both the
outdoor condenser fan and compressor will
turn off. After approximately 30 seconds, the
compressor will turn on and begin to heat the
outdoor coil causing the ice and snow to melt.
NOTE: While the ice and snow is melting, some
steam may rise from the outdoor unit as the warm
coil causes the melting frost to evaporate. When
defrost is completed, the outdoor fan motor will
start, and the compressor will turn off again. In
approximately 30 seconds the compressor will
start up again and continue normal operation.
Operating the Heat Pump for Automatic
Cooling and Heating
1. Set the thermostat system switch to AUTO
and the thermostat fan switch to AUTO. See
Figure 1.
Note: Thermostats will vary. Some models will
not include the AUTO mode, and others will have
the AUTO in place of the HEAT and COOL, and
some will include all three.
2. Set the thermostat temperature to the desired
heating and cooling temperature level(s). The
outdoor unit and the indoor blower will then
cycle on and off in either the heating or cooling
mode of operation as required to automatically
maintain the indoor temperature within the
desired limits.
Operating the Indoor Blower Continuously
The continuous indoor blower operation is
typically used to circulate the indoor air to
equalize a temperature unbalance due to a sun
load, cooking, or fi replace operation.
Set the thermostat fan mode to ON (Figure 1). The
indoor blower starts immediately, and will run
continually until the fan mode is reset to AUTO.
The continuous indoor blower operation can be
obtained with the thermostat system mode set
in any position, including OFF.
Shutting the Heat Pump Off
Change the thermostat’s system mode to OFF
and the fan mode to AUTO. See Figure 1.
NOTE: The system will not operate, regardless
of the temperature selector setting.
SYSTEM MAINTENANCE
CAUTION:
Shut off all electrical power to the unit
before performing any maintenance or
service on the system. Failure to comply
may result in personal injury or death.
Proper maintenance is most important to achieve
the best performance from the appliance and
should be performed by a qualifi ed service
technician at least once a year. Follow the
maintenance schedule and the instructions below
for years of safe, trouble free operation.
Regular Cleaning
• Clean or replace the indoor air fi lter at the
start of each heating and cooling season,
and when an accumulation of dust and dirt
is visible on the air fi lter.
• Remove any leaves and grass clippings from
the coil in the outdoor unit, being careful not
to damage the aluminum fi ns.
• Check for obstructions, such as twigs, sticks,
etc.
TROUBLESHOOTING
If the unit fails to operate, check the following:
• The thermostat is properly set. See Cooling
Operation for air conditioning or Heating
Operation for furnace or air handler.
• The unit disconnect fuses are in good condition
and the electrical power to the unit is turned
on.
WARRANTY INFORMATION
A warranty certificate with full details is
included with the heat pump. Carefully review
these responsibilities with your dealer or
service company. The manufacturer 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:
• Correcting wiring problems in the electrical
circuit supplying the heat pump.
• Resetting circuit breakers or other switches.
• Adjusting or calibrating of thermostat.
5
INSTALLER INFORMATION
SAFETY INFORMATION
IMPORTANT: Safety markings are used
frequently throughout this manual to designate
a degree or level of seriousness and should not
be ignored. WARNING indicates a potentially
hazardous situation that if not avoided, could
result in personal injury or death. CAUTION
indicates a potentially hazardous situation that
if not avoided, may result in minor or moderate
injury or property damage.
Read the following instructions completely
before performing the installation. Unqualifi ed
individuals should not attempt to interpret
these instructions or install this equipment.
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.
WARNING:
These units are fully charged with
R-410A refrigerant and ready for
installation. When a system is installed
according to these instructions, no
refrigerant charging is required.
If repairs make it necessary for
evacuation and charging, it should
only be attempted by qualifi ed, trained
personnel thoroughly familiar with this
equipment. Some local codes require
licensed installation service personnel
to service this type of equipment.
Under no circumstances should the
homeowner attempt to install and/
or service this equipment. Failure to
comply with this warning could result
in equipment damage, personal injury,
or death.
CAUTION:
This unit uses refrigerant R-410A. DO
NOT under any circumstances use any
other refrigerant in this unit. Use of
another refrigerant will damage the unit.
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 and related system components.
Under no circumstances should the Homeowner
attempt to install and/or service the equipment.
Labels, Tags, and Precautions
When working with this equipment, follow all
precautions in the literature, on tags, and on
labels provided with the equipment. Read and
thoroughly understand the instructions provided
with the equipment prior to performing the
installation and operational checkout of the
equipment.
Brazing Operations
Installation of equipment may require brazing
operations. Safety codes must be complied
with. Safety equipment (safety glasses, work
gloves, fi re extinguisher, etc.) must be used
when performing brazing operations.
WARNING:
Verify all electrical power to the unit is
off prior to installing or servicing the
equipment. Failure to shut off power
may cause personal injury or death.
6
Loading...