Table of Contents
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Installation Instructions
Split System Heat Pump
The iQ Drive heat pump operates as part of a larger intercommunicating system which provides temperature, air fl ow, and
humidity control for a residence or other similarly sized building. This system includes this outdoor unit, the dedicated iQ
controller (thermostat), and an iQ system-compatible indoor unit, typically an air handler with electric strip heat or a gas
furnace. The system will function only if these components are matched and intended for use within this system. A complete
list of compatible equipment by model and serial number is available in NORDYNE document 709031, iQ Field Wiring
Installation Instruction. Accessory equipment which may be used with this system includes humidifi ers, electric or electronic
air cleaners, and U/V (ultraviolet) sterilizing lamps.
Refer to the System Operation section below for a complete description of how to use the various features of the system.
In addition to providing the means for operation, the controller also serves as the means for initial system confi guration and
setup, and it provides a considerable amount of information for troubleshooting the system and diagnosing problems.
OTHER REFERENCE DOCUMENTS
• Installation instruction documents for indoor equipment (furnace or air handler, optional humidifi er, etc.)
• iQ Field Wiring Installation Instruction, document 709031, provided in the iQ thermostat/controller kit
• iQ Thermostat/Controller User's Manual, document 709063, provided in the iQ thermostat/controller kit
• local wiring and building codes
• Nordyne Application Guideline for Refrigerant Lines Over 75 Feet document 044B-0600
• iQ Zone System Zone Thermostat User's Manual
• iQ Zone System Installation Instructions
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Table of Contents
Troubleshooting
Related Manuals for Nordyne iQDrive Split System Heat Pump
Summary of Contents for Nordyne iQDrive Split System Heat Pump
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Page 1: Installation Instructions
The system will function only if these components are matched and intended for use within this system. A complete list of compatible equipment by model and serial number is available in NORDYNE document 709031, iQ Field Wiring Installation Instruction. Accessory equipment which may be used with this system includes humidifi ers, electric or electronic air cleaners, and U/V (ultraviolet) sterilizing lamps. -
Page 2: Table Of Contents
TABLE OF CONTENTS PREPARATION ..............................3 Slab Mounting ..............................3 Roof Mounting ..............................3 ELECTRICAL CONNECTIONS ...........................3 Electrical Power Wiring ............................3 Control Circuit Wiring ............................4 iQ Zone Control Wiring ............................4 Recheck Wiring ..............................4 REFRIGERANT LINE CONNECTIONS .......................4 Line Design and Routing ..........................4 Brazing ................................5 System Evacuation ............................5 Refrigerant Charging ............................5 Alternate Procedure for Charging a Heat Pump in Cooling Mode ..............6... -
Page 3: Preparation
PREPARATION otherwise) Before proceeding with installation of iQ heat pump equipment, • Refer to Nordyne Application Guideline for Refrigerant Lines consult with the distributor and homeowner to confi rm that the Over 75 Feet document 044B-0600, for piping details equipment listed on the order is what was ordered, and that it matches labeling on the equipment packaging. -
Page 4: Control Circuit Wiring
Refer to iQ Drive System Field Wiring Instruction document provided in the iQ controller kit for more Instructions, NORDYNE document 709031 shipped with the details. A 3-wire cable must be run from a splice point in the... -
Page 5: Brazing
50 ft. Systems that require more elevation will WARNING: need to have an oil trap installed in the vapor line. Refer to Nordyne Application Guideline for Refrigerant Lines Over 75 The heat pump system contains liquid and Feet (document 044B-0600) for piping details. -
Page 6: Alternate Procedure For Charging A Heat Pump In Cooling Mode
2. Start the system in CHARGE MODE, HEATING. Allow the 2 TON 3 TON 4 TON MODEL: system to run 15 minutes to stabilize. (-024K) (-036K) (-048K) 3. Record the liquid refrigerant pressure in psig at the service valve. Factory Charge 10.0 lbs 10.5 lbs 11.8 lbs... -
Page 7: Installer Settings
operating mode (e.g., COOL or HEAT) in large numerals and NOTE: It is important that any settings or service tests which letters. Across the bottom line of the display are fi ve words are appropriate be made at the time of system installation. or abbreviations (normally RH TEMP MODE FAN MENU) System Confi... -
Page 8: Accessories
For MQ modulating iQ gas furnaces only, an additional Dealer Information screen titled “OUTDOOR SYSTEM” will appear after the Use the keys to select DEALER INFORMATION. Press SYSTEM CONFIGURATION summary screen. “HEAT key to enter the dealer information summary screen, PUMP-IQ”... -
Page 9: Heat Off Delay
Under normal circumstances it is not necessary or advisable CHARGE MODE – Runs the system at the proper speed for to change these from their default values. checking and adjusting refrigerant charge. Select the mode as HEATING or COOLING, then change RUN from OFF to ON. Heat Off Delay The screen backlight will blink red. -
Page 10: Service Information Screens
SERVICE INFORMATION SCREENS OUTDOOR FAN STATUS – Any FAN ERROR CODE number (normally 0) will be logged in the FAULT STATUS screen in Typically, when any of these service tests is being performed, more easily understood wording. the serviceperson should check operation visually, with special instrumentation (if available), and view operational data on the INDOOR FAN STATUS –... -
Page 11: Other Confi Guration Entries
DEFROST STATUS – This screen confi rms that a heat pump is in defrost and provides detailed information helpful to C A PA C I T Y C O N T R O L understand (a) the status of an in-progress defrost cycle and H E A T P U M P H E A T I N G R O O M T E M P 7 0 4 F... -
Page 12: Auto Changeover Time
economical to run the backup heat rather than the heat pump. Date and Time The default and minimum value for this parameter is 12°F. Once Setting date and time early in the installation process not only the outdoor temperature rises above this setpoint, the heat saves the homeowner from having to do it, but provides an pump will be permitted to operate again after the demand has accurate time and date stamp for any faults logged (during... -
Page 13: Humidity Settings
HUMIDIFY and DEHUMIDIFY are different, and changing 1. From the Main Screen, press the key to select one may push the other so that a minimum of 5% is MENU at the bottom of the screen, then press the maintained between the settings. The humidify setpoint to see the Main Menu. -
Page 14: System Operation: Quick Start
all settings made in the iQ thermostat/controller dealing • To use the fan to deliver air to all zones when not heating with temperature setpoint (temporary hold, vacation hold, or cooling, set the Fan Mode to ON. The Intermittent Fan permanent hold, time schedule, smart recovery) do not apply feature described earlier will also operate, serving all zones. -
Page 15: System Startup Checkout & Troubleshooting
5. For systems without iQ Zone, adjust the operating setpoint communication wiring to the zone control board need to be if desired using a temporary hold (pressing the checked. If the main screen reverts to back to the zoning- when the Main Screen is displayed). With iQ Zone, zone disabled screen (showing room temperature), power and control enabled, adjust the operating setpoint for each zone communication wiring to the zone control board need to... -
Page 16: System Diagnosis & Troubleshooting
SYSTEM DIAGNOSIS & TROUBLESHOOTING Outdoor Unit Inverter The following is a summary of normal and abnormal operation WARNING for typical startup to check out the system. Reference is made to INSTALLER SETTINGS and SERVICE INFORMATION ELECTRIC SHOCK HAZARD! screens described above. Refer to training literature for more Disconnect power before servicing the details. -
Page 17: Outdoor Unit Exv Board (Left Side Small Circuit Board)
When the compressor is running in cooling, the right-most wired to “R” and “C” on the EXV board. These should not be LED should be on (reversing valve is energized). cross-wired. If the green LED is blinking at a regular rate during cooling, Abnormal –... -
Page 18: Iq Zone System Confi Guration
Abnormal – If the red LED near the dc power plug is not on, Common Troubleshooting Issues then the AC/DC power supply is not connected or not working. If the red LED 1 ½” from the lower right edge does not fl ash, Compressor Does Not Start Immediately the module is not communicating properly on the iQ bus. -
Page 19: Maintenance
Although There Is a Large Demand At Startup, MAINTENANCE the Compressor Only Runs at Medium Speed • Regardless of demand the system will always start and run IMPORTANT: at an intermediate speed for one minute. Subsequently the speed may increase signifi cantly. Be certain the electrical power to the outdoor unit and the furnace or air handler is disconnected before Humidifi... - Page 20 Inverter (black plastic case) Outdoor Outdoor Interface Board EXV Board Low Voltage Contactor Control Wiring Compartment Figure 3. iQ Drive Heat Pump Control Panel...
- Page 21 iQ DRIVE - HEAT PUMP (OUTDOOR SECTION) COMPR YELLOW OD FAN BLACK MOTOR LPS HARNESS LOW PRESSURE SWITCH 1 2 3 4 5 6 7 6 5 4 3 2 1 PANASONIC INVERTER OD COIL TEMP SENSOR (FOR DEFROST) COMPR OUTDOOR DISCHG AMBIENT...
- Page 22 Figure 5. Low Voltage Compartment Control Wiring Connections Figure 6. iQ Heat Pump Control Wiring Outdoor Destinations...
- Page 23 SINGLE LOOP SHOWN Figure 7. Wire Looping Through a Toroidial Choke Suction Service Port Vapor Line Service Valve Liquid Line Service Valve Figure 8. Service Ports and Valves (Below Control Panel)
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Page 24: Cooling Mode
Cooling Mode (Outdoor Temperature above 60 °F) 3 Ton 2 Ton 4 Ton Remove Refrigerant if above the curve Add Refrigerant if below the curve Liquid Temperature (°F) Heating Mode (Outdoor Temperature below 60 °F) 3 Ton 2 Ton Remove Refrigerant if above the curve 4 Ton Add Refrigerant if below the curve Liquid Temperature (°F) - Page 26 Figure 11. Controller Menu Structure: Installer Settings...
- Page 27 Communication Inverter LED (to the left of blue DIP switch block) DEF CCH Figure 12. Inverter LED Location (Behind Interface Board, to the left of Figure 13. Interface Board LED Locations blue DIP switch block) Power Figure 14. EXV Board Green LED Location...
- Page 28 Power Red Power Plug Zone Network LED’s iQ Bus iQ Comm Connection LED’s Figure 15. iQ Control Board LED locations INSTALLER: PLEASE LEAVE THESE INSTRUCTIONS WITH THE OWNER. ¢708921(¤ Specifi cations & illustrations subject to change without notice or incurring obligations. O’...
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