709079-A FS4BI PSH4BI SS AC ii.indd
Contents
1. the default and OFF then press the to save the setting e Press the 4 key multiple times to return to the Main Screen 5 Humidity Settings Separate setpoints for humidification and dehumidification are available in units of percent RH relative humidity The humidify setpoint only is relevant if optional humidifier equipment has been installed and connected to the system the 24 vac output See the Field Wiring Installation Instructions The installer should clarify for the homeowner that priority is given to cooling over dehumidifying so the ability of the system to satisfy the RH setpoint s depends on a variety of conditions For example if the cooling load causes the unit to run at an intermediate speed or higher the effectiveness of dehumidification is increased Humidification can operate when the system is heating or the fan is set to Manual ON with the compressor off Dehumidification operate only when the system is cooling mode the dehumidification option is enabled and room temperature is close to the setpoint 12 In order to set the humidity setpoint s do the following e From the Main Screen press the 4 or key to select RH at the bottom of the screen then press the key to see the Humidity screen The current setpoints are displayed e As indicated at the bottom of the screen press the to enter the Humidity Settings screen HUMIDITY SETTINGS H2. including these instructions and one filter drier NOTE The thermostat controller which is required for system operation is part of a separately purchased kit ELECTRICAL CONNECTIONS A WARNING ELECTRIC SHOCK HAZARD Disconnect all electrical power at main circuit box before wiring electrical power to the outdoor unit Failure to follow these instructions may result in electric shock or death Electrical Power Wiring Electrical power wiring shall comply with the current provisions of the National Electrical Code ANSI NFPA 70 as supplemented by applicable local building codes The installer should become familiar with the wiring diagram before making electrical connections to the outdoor unit An equipment wiring diagram is included in this instruction and inside the unit control panel cover Refer to the unit rating label located on the exterior of the control box cover for operating voltage minimum circuit ampacity and maximum fuse size See Table for wire sizing COPPER WIRE SIZE AWG 1 Voltage Drop Supply Wire Length Ft Supply Circuit Ampacity 01 01 Wire Sized based on for 60 C type copper conductors Table 1 Copper Wire Ampacity Tables 1 A properly sized branch circuit and disconnect switch must be installed where it is easily accessible and within line of sight of the outdoor unit 2 Remove the control panel cover Route the po
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5. Control Power Wiring RED screw no factory wire or BLK striped YEL to High Pressure Switch GRY or BLK C screw no factory wire on earlier iQ A C units Table Il Control Wiring to Outdoor iQ A C Unit contactor coil Recheck Wiring Check that wire routing is correct and connections are secure for all power and control wiring REFRIGERANT LINE CONNECTIONS Line Design and Routing Refrigerant lines must be connected by a licensed EPA certified technician following sound established installation practice Once the condensing unit location has been determined and the unit set in place the refrigerant lines should be routed and connected e Refrigerant lines should follow a direct path from the indoor coil to the outdoor unit avoiding sharp bends When lines pass through walls make sure to properly seal and support them so that vibration is not transmitted to the structure e Refrigerant tubing should be supported in a manner which assures that the tubing will not vibrate or wear as a result of contact with sharp materials or edges during System operation e Lines must be clean refrigeration grade copper e Avoid removing caps and plugs from the condensing unit or lines until they are ready to be connected e Insulate the vapor line with refrigerant line insulation 14 wall thickness or greater Proper system performance and oil management depend on properly selecting the liquid and vapor l
6. Make sure that the roof structure can adequately support the weight of the equipment Consult local building codes for rooftop installations Once location has tentatively been selected trace routing of new or pre existing refrigerant lines two and power and control wiring See further discussion below maximum recommended length for refrigerant lines 100 feet maximum elevation difference compressor base to indoor coil base compressor higher 50 feet An oil trap is required for elevations exceeding 50 feet e maximum elevation difference compressor base indoor coil base compressor lower 50 feet An oil trap is required for elevations exceeding 50 feet refrigerant lines should NOT be buried in concrete or otherwise e Refer to Nordyne Application Guideline for Refrigerant Lines Over 75 Feet document 044B 0600 for piping details Once the above information has been confirmed and potential questions regarding location refrigerant line routing and wire routing have been resolved proceed with unpacking the equipment It is strongly recommended that inspection of the hardware be performed prior to bringing it to the installation site Inspect for cosmetic as well as functional damage such as obvious holes or gaps in tubes and joints cut or pinched wires or wire insulation Confirm that the iQ Drive air conditioning unit package includes the following e the coil compressor control unit itself e
7. The user can always return to the main screen from any other screen by repeatedly pressing the 4 key 3 13 09 12 18 PM OUTDOOR FAN AUTO 16 HEAT HUMIDITY 36 HEAT 62 COOL 85 RH TEMP MODE FAN MENU Installer Settings Using procedures explained in iQ Drive training go to the INSTALLER SETTINGS menu screen INSTALLER SETTINGS SYSTEM CONFIGURATION ACCESSORIES DEALER INFORMATION SERVICE TESTS RESTORE DEFAULTS HEAT OFF DELAY ALTITUDE ADJUST IQ DRIVE REV 5 0 SELECT OPTION AW lt PREVIOUS Other than in the splash screen displayed when power is first applied to the controller this is the only screen which displays the controller software version number NOTE It is important that any settings or service tests which are appropriate be made at the time of system installation 1 System Configuration Any time CONFIGURATION NEEDED appears at the top of the Main Screen the user must proceed through the SYSTEM CONFIGURATION screens even if no changes to values or options are necessary This will occur when installing a new thermostat or moving a thermostat to a different type of iQ system The outdoor unit should be powered up when confirming or entering system configuration With the first line SYSTEM CONFIGURATION selected press the to proceed through the system configuration screens The next screen titled SYSTEM CONFIGURATION provides a read only summary of the configuration as
8. 14 P9 14 811 16515148 T UT 14 Indoor Unit Intert ce BOSE 15 Indoor Unit EXV Board at the indoor coil furnace or air handler 15 Indoor Unit Constant CFM Motor Control BOAEG 15 Indoor Unit One or Two Stage G7 Furnace Board 2 eroe toph eunte 15 Indoor Unit iQ Modulating Gas Furnace Board 15 Common Troubleshooting 155006 15 16 MAINTENANCE 16 FIGURES UAC IIT 17 PREPARATION Before proceeding with installation of iQ Drive air conditioner equipment consult with the distributor and homeowner to confirm that the equipment listed on the order is what was ordered and that it matches labeling on the equipment packaging Next determine including consultation with the homeowner the intended preferred location for placement of the compressor outdoor coil unit Unit envelope dimensions are shown in Figure 1 This air conditioning unit is designed for outdoor installation on
9. Normal The red LED near the top of the board should be on steadily The green LED near the top of the board should have a heartbeat blink consisting of a double blink followed by a pause repeated Of the four LEDs towards the left side of the board the lowest one marked H should be on when humidification is called for Abnormal If the green LED near the top of the board is not lit the board is not connected to the communication network properly If the red LED near the top of the board is not lit the board is not getting 24 vac control power from the furnace board Indoor Unit One or Two Stage G7 Furnace Board Normal The red and green LEDs should be on steadily When the furnace is on and a flame is detected the amber LED should be on Abnormal The LEDs will provide a diagnostic code through their blink pattern Refer to furnace Installation Instructions for detailed troubleshooting Indoor Unit iQ Modulating Gas Furnace Board Normal The red LED should be on steadily The green LED near the top of the board should have a heartbeat blink consisting of a double blink followed by a pause repeated When the furnace is on and a flame is detected the amber LED should be on Abnormal The LEDs will provide a diagnostic code through their blink pattern Refer to furnace Installation Instructions for detailed troubleshooting If the green LED alone is not lit the board is not connected to the communicati
10. detected and otherwise showing either defaults or previously configured information SYSTEM CONFIGURATION OUTDOOR SYSTEM 2 TON AIR COND IQ WITH 1 STG GAS FURNACE BLOWER TYPE B COMMUNICATION INDOOR UNIT OK OUTDOOR UNIT OK 4 PREVIOUS The words under OUTDOOR SYSTEM and WITH describe the system components as automatically detected by the controller Both entries under COMMUNICATION should show OK If CHECK appears it is an indication that either communication wiring is incomplete or incorrect or the outdoor unit is not powered up Proceed through subsequent screens by using either the or ll key indicated by NEXT The following table indicates the information that may be or needs to be manually configured or confirmed by the installer Information not listed is automatically determined If necessary check the ratings of the indoor unit before proceeding Items Requiring Manual Configuration or Confirmation Heat type number of stages staging differentials kW G6 gas furnace Heat type number of stages 15 stage start differential furnace input rate furnace rise If 2 stage 2 stage differential G7 single stage gas 1 stage start differential furnace rise G7 two stage gas 1 stage start differential 274 stage differential furnace furnace rise Modulating MQ gas Table V System Configuration Entry Summary For MQ modulating iQ gas furnaces only an additio
11. sen nea ee ap Secuencia ede ba ena 6 jubere mU T 6 merus TREE T 7 1 System tegis X T 7 8 3 Dealer IniormmiauOP 8 I 8 s oS c 8 MN TES S C UO O 8 The SERVICE JNFORMATION RU DH 9 Other Configuration E 10 1 Auto AMOS OVER 11 2 eH cr mt 11 3 Program Schedule vs 11 12 b DOO IIS Deu E nU DN D a DIM NEUE 12 RUE TU SD UE 12 system Operation QUICK NR E ROI ara ce m DM S pO TRI opc MENU GEO 13 System Startup Checkout arid TroublesliDOLIng 13 SYSTEM DIAGNOSIS AND 5
12. show OK All information displayed in the System Configuration screen should be accurate Abnormal If the display is not lit check that 24 vac is being provided between the R and C terminals in the thermostat s back connection plate If not trace the connection of all controller wires back to the indoor unit furnace or air handler Check that connections are in accordance with field wiring diagrams and instructions If a SERVICE NEEDED screen with a red backlight is displayed a fault has been detected A brief description of the fault is displayed on the screen Access to the FAULT STATUS screen is permitted If communication with the outdoor unit is OK but the unit size in tons shown on the System Configuration screen in wrong contact the service representative of the equipment distributor The inverter may not have undergone its initialization procedure performed at the factory Outdoor Unit Inverter A WARNING ELECTRIC SHOCK HAZARD Disconnectpowerbeforeservicingtheoutdoor unit Failure to follow these instructions may result in electric shock or death Trouble shooting the outdoor unit may require that power be restored with the control panel cover removed Become familiar with the control panel and hazardous voltage areas before proceeding Time is required for inverter voltage to bleed down after removal of line power Wait at least 60 seconds after removing line voltage before touching any inv
13. APACITY CONTROL AIR COND COOLING ROOM TEMP 704 F SP 700 MODSP 698 F USED DEMAND 6 F ACT TARG STEP 8 8 COMP RPM 2636 2640 OD FAN RPM 1042 1050 ID FAN RPM 910 900 OVERRIDE ACTIVE NO lt q PREVIOUS Other Configuration Entries The following settings in the controller fall into the following categories options and features which are not typically used or understood by the homeowner and should be examined and considered for adjustment if desired by the installer including autochangeover time settings which are recommended to be done by the installer including setting date and time options and features which are recommended to be set with the homeowner s oversight including selection of programmable schedule versus non programmable usage of dehumidification enabled by default humidity settings usage of Smart Recovery disabled by default e further features which the installer may demonstrate to the homeowner including Schedule including setback temperature settings usage of holds fan options temperature units F or C USA clock or military time 12 or 24 hour The above settings are described below 1 Auto Changeover Time This adjustment enables AUTO mode which allows the System to automatically switch between heating and cooling without having to touch the controller Autochangeover time is the delay minimum time between the end of cooling operation and the begin
14. E AND TIME menu screen In order to set date and time do the following e From the Main Screen press the 4 or key to select MENU at the bottom of the screen then press the Bl key to see the Main Menu e SET DATE AND TIME will be selected Press the key two times e Enter the year month day date hour and minute on consecutive screens Use the A or V key to change any value and press the gt key to advance to the next After setting the minutes value press the key to save the complete setting e Press the 4 key multiple times to return to the Main Screen 3 Program Schedule versus Nonprogrammable While using setback program schedules are advisable to take advantage of potential economic and energy savings some homeowners still prefer to perform setpoint adjustment by exclusively using the and keys The following setting provides the nonprogrammable option or the option for different numbers of events per day 2 or 4 on the program schedule In order to set the program schedule option do the following e From the Main Screen press the key to select MENU at the bottom of the screen then press the Bl key to see the Main Menu e Use the or V key to select SETTINGS then press the key to enter the Settings menu Use the A or V key to select OPTIONS then press the key to enter the Options screen e value under PROGRAM SCHED USAGE will be selected Press the
15. EVIOUS Making changes or entries under ACCESSORIES is optional 3 Dealer Information Use the A or V keys to select DEALER INFORMATION Press the key to enter the dealer information summary Screen and submenus and screens This set of screens allows the installer to enter text information which will be displayed on a SERVICE NEEDED display screen if a persistent fault occurs The following items may be entered e Brand name Maytag Frigidaire NuTone Broan Tappan Westinghouse or custom e Model Number e Contractor Name e Contractor Phone Number DEALER INFORMATION BRAND NAME MAYTAG MODEL NUMBER 5 048K CONTRACTOR NAME JOE S HVAC CONTRACTOR PHONE 911 393 7777 SELECT OPTION AW lt q PREVIOUS The entered dealer information summary screen accessible here will be available for future reference by a serviceperson under INSTALLER SETTINGS gt DEALER INFORMATION Entry of this information is optional 4 Heat Off Delay If the system includes a G6 gas furnace you may use the A or keys to select HEAT OFF DELAY Press the key to enter the screen which allows changes to the length of time that the blower indoor fan will remain on after the furnace flame is extinguished Under normal circumstances it is not necessary or advisable to change this from its default value of 120 seconds 5 Altitude Adjust If the system includes an iQ modulating gas furnace you may use the A or W k
16. Installation Instructions IQ Drive Split System Air Conditioner The iQ Drive air conditioner operates as part of a larger intercommunicating system which provides temperature air flow 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 humidifiers 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 configuration and setup and it provides a considerable amount of information for troubleshooting the system and diagnosing problems TIN IMM MI MM 941 TU OTHER REFERENCE DOCUMENTS Installation instruction documents for indoor equipment furnace or air handler optional humidifier etc iQ Field Wiring Installation Instr
17. LING Allow the system to run 15 minutes to stabilize 3 Record the liquid refrigerant pressure in psig at the service valve 4 Record the liquid refrigerant temperature in F at the service valve 5 Using the temperature value recorded determine the corresponding liquid refrigerant pressure from the upper curve for cooling in the charging chart Figure 9 6 If the pressure measured in step 3 is less than the required liquid refrigerant pressure determined in step 5 then refrigerant needs to be added 7 the pressure measured in step is greater than the required liquid refrigerant pressure determined in step 5 then the system is over charged 8 Add or remove charge from the system depending on the measurements recorded Allow the system to stabilize for 15 minutes before taking the next readings SYSTEM SETUP USING THE IQ CONTROLLER A IMPORTANT It essential that the wires meant to provide 24 volts to the outdoor unit are not mistakenly connected to the communication terminals Check again before you apply power General Power up the entire system with the iQ controller thermostat installed in its base The controller will be of use to the installer for the following general purposes e Configuring the system using INSTALLER SETTINGS screens required Running system service tests recommended Using service information screens to examine and diagnose system operation very helpful if needed e
18. NIIAH3 L NOIIV2OT13ALIV T3H ASN aaxuvW LON 38v HOSS3HdWOO NO S IVNIWH3 L eesuo 9 D iring itioning Figure 4 iQ Drive Air Cond 21 22 Figure 5 Low Voltage Control Wiring Compartment CONTROL PANEL iQ OUTDOOR UNIT iQ COMMUNICATIONS GND TO INVERTER WHT ______ COIL THROUGH TO CONTACTOR HIGH PRESSURE SWITCH x 5 Wire Color Scheme 2 24 VAC CONTROL PANEL iQ OUTDOOR UNIT iQ COMMUNICATIONS GND TO INVERTER WHT 0202 COIL THROUGH TO CONTACTOR HIGH PRESSURE SWITCH 1 D m a ee Wire Color Scheme 1 24 VAC Figure 6 iQ Drive Air Conditioning Control Wiring Connections 23 24 SINGLE LOOP SHOWN Figure 7 Wire Looping Through a Toroidial Choke Liquid Service Valve Vapor Service Valve Figure 8 Service Ports and Valves Below Control Panel Liquid Pressure psig 2 3 and 4 Ton IQ Drive Charging Chart ee 2 744 1 E qe E dt 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 Liquid Temperature F Figure 9 Charging Chart for iQ Drive Air Conditioning
19. RGE MODE Runs the system at the proper speed for checking and adjusting refrigerant charge Select the mode as COOLING then change RUN from OFF to ON The screen backlight will blink red The user may navigate to other screens e g SERVICE INFORMATION during the process until ON in the CHARGE MODE screen is changed back to OFF and saved The red blinking backlight serves as a reminder that the unit is operating in an abnormal service mode Select OFF from the list that includes ON and OFF and SAVE when finished e FURNACE TESTS Runs the system at the selected fire level to allow confirmation of proper operation The screen backlight will blink red A short list of instructions reminders is provided Select START to run a single stage furnace Select LO FIRE or HI FIRE to run a two stage furnace The user may navigate to other screens e g SERVICE INFORMATION during the process The red blinking backlight serves as a reminder that the unit is operating in an abnormal service mode Select DONE from the list that includes LO FIRE HI FIRE START STOP and SAVE when the test is complete before leaving the screen for the last time e AIR COND RUN TESTS In this screen the unit can be made to run at a fixed speed regardless of room temperature RUN can be changed between OFF MAX speed INTERMED iate speed and MIN speed MAX speed is the same as that used in charge mode The screen backlight will blink red
20. Setting options and features which are not typically used or understood by the homeowner recommended e Setting options and features with the homeowners oversight in an effort to train him her suggested The following descriptions of the controller apply specifically to software Version 5 0 Menu structure and available options will be different for earlier versions A summary of the full controller menu structure is provided in Figures 10 and 11 Some screens or menu items shown are applicable to heat pump systems and will not appear with the air conditioning system NOTE This guideline is not intended to be a comprehensive substitute for proper iQ Drive system training required Screen Navigation Moving between option categories on menu screens or moving between possible values for any one option is done using the and keys The line or value with a dark background behind the characters is considered selected In order to change a selected option in most screens or to save a changed value use the key Use the 4 key to back up into the previous screen in the menu screen structure The Main Screen The Main Screen is the normal display viewed on the controller It prominently shows room temperature and operating mode e g COOL or HEAT in large numerals and letters Across the bottom line of the display are five words or abbreviations normally RH TEMP MODE FAN MENU which represent selectable entry points into the menus
21. TUS CAPACITY CONTROL SELECT OPTION 4 PREVIOUS Most of the items on the SERVICE INFORMATION menu are self explanatory by title Some key features are the following by item name e FAULT STATUS The top entry is ACTIVE FAULT This should show NO FAULT unless the last fault detected has not cleared after its 5 minute lockout period or the fault condition still exists The remainder of the screen shows a history of previous faults or conditions detected with military time and date stamps for each Having the correct time and date configured is important in making this list useful Use the key to view the remainder of the last most recent 10 faults logged Generally fault logging is not functional during Service Tests 10 FAULT STATUS ACTIVE FAULT LOW PRESSURE SWITCH FAULT HISTORY 1 LOW PRESSURE SWITCH FLT 23 59 11 14 09 2 OD UNIT COMM FLT 20 23 59 10 31 09 3 NO FAULT 4 PREVIOUS COMPRESSOR STATUS This screen should confirm the configured size as MODEL NUMBER 20 2 tons 30 3 tons etc With correct configuration only 20 30 or 40 should appear here LOW PRESSURE SW shows the state of the low pressure switch Any COMPR ERROR CODE number normally O will be logged in the FAULT STATUS screen in more easily understood wording The displayed information is read from the outdoor unit OUTDOOR FAN STATUS Any FAN ERROR CODE number normally O will be logged in the FAULT STATUS screen
22. UMIDIFY 45 DEHUMIDIFY 50 SELECT AW lt PREVIOUS CHANGE e Use the A or V key to select the RH setting to change then press the key to allow changes e Use the A or V key to change the RH setting then press the key to save the setting The configurable ranges for HUMIDIFY and DEHUMIDIFY are different and changing one may push the other so that a minimum of 596 is maintained between the settings The humidify setpoint be set in the range 30 to 45 in increments of 5 The dehumidify setpoint can be set in the range 35 to 70 in increments of 5 Press the lll key to save any changes e Press the 4 key multiple times to return to the Main Screen 6 Smart Recovery When Smart Recovery is enabled the system will start changing the cooling or heating setpoint in advance of a schedule change so that the room temperature is at or near the setpoint of the subsequent schedule time block when that time block begins It only applies if the subsequent cooling setpoint is lower or heating setpoint in higher Also if PROGRAM SCHED USAGE is set to NON PROGRAMMABLE this option does not apply In order to change the smart recovery option do the following e From the Main Screen press the 4 or gt key to select MENU at the bottom of the screen then press the to see the Main Menu e Use the A or V key to select SETTINGS then press the key to enter the Settings menu Use the A or V key to
23. VNYNA SVD OI MM 21919919 1 39 18 LYVLS 39 15 319 6 S39VLS HO 193 13S 27 ADVLS J VLS 919419313 HO SVD 199138 TIVILN3H32HIG LYVLS 19 18 3915 39 18 319 6 5114110 51531 IWAH 51531 ANOO HIV 51531 3GONW 39uvHO SLSALADIAYAS 3NOHd HOLOVHINOO HOLOVHINOO NOLLVIAHOHNI H3 1V3G SWALSAS 25 SIN31SAS H3MO 18 SINOSVNVd HIV 831 088300 1SOH33Q 1109 H33G LWAH SISNOD 1S0H8d3G 1594 AV T30 440 1V3H 148 WALSAS 1 aan Uy 138 SIJNOO 16084840 3HOLS3H 5 55320 WALSAS 5 AW1Ad 440 1V3H 51541 3OlAH3S SONILLAS YATIVLSNI INSTALLER PLEASE LEAVE THESE INSTALLATION INSTRUCTIONS WITH THE OWNER 7090790 Specifications and illustrations subject to change without notice and without incurring obligations O Fallon MO COMPLETE COMFORT GENUINE VALU 7090790 Printed in U S A 08 09
24. e Have a yearly inspection by a qualified service technician to ensure that the system is performing at its optimal level FIGURES and DIAGRAMS 18 cy WALL EN 18 2 CONTROL PANEL Figure 1 Unit Envelope Dimensions w _ Red Inverter LED Inverter Black Plastic Case Low Voltage Control Wiring Compartment 5 FI Figure 2 iQ Drive Air Conditioning Control Panel 19 20 Figure 3 Power Wiring Connections 1OLONIH 2 NAHLI O ba J zwi 9 5 suum 2 HOLSIAH3H L 1 A yv HOLSIINH3HL HOOG 100 n SE 33095 MOTTA YOLOW NYHL nvaioHOL exseo 21 c1 21 5 0 pn 228 a uo lt cuu 479 ITI 2 HOLOV3H 000000 9 91915 QN3931 jexseo 0 5 SNOILISOd H3dOHd A3LLN3GI OL 15 MBVIA JHL OL S IV
25. e or electric strip heat is on 3rd LED or 3rd and 4th LEDs from the right should be on first and second stage heat When the unit is cooling the right most LED should be on EXV enabled to open If humidification is called for the 2nd LED from the right should be on Abnormal If no LEDs are lit on the board 24 vac control power is not being provided across the and terminals Check for this voltage between the left most two screw terminals labeled R and C Indoor Unit EXV Board at the indoor coil furnace or air handler Normal The green LED at the upper left of this board should be steadily on Abnormal If the green LED is not lit the EXV board is not getting 24 vac power from the interface board Check for 24 vac between R and C on the interface board and check that the tabs marked and on the interface board are wired to R and on the EXV board These should not be cross wired If the green LED is blinking at a regular rate during cooling it indicates that one of the two EXV sensors is reading out of range Refer to training literature for sensor interpretation and troubleshooting If the green LED is blinking at a non uniform rate heartbeat it indicates that the board has been placed in the Manual Mode Hold down the small black button on the board for more than 3 seconds to return it to automatic control mode Indoor Unit Constant CFM Motor Control Board
26. epeat the leak test if required 3 Evacuate the system to at least 500 microns to remove non condensables and water vapor Close the manifold valves and remove the vacuum pump 4 Connect the refrigerant tank to the center manifold port of the gauge set Pressurize the system enough to break the vacuum 5 Open both service valves by turning the valve stems 4 turn counterclockwise The stem will be in line with the tubes Replace the stem caps and tighten Proceed with Refrigerant Charging section A WARNING The air conditioning system contains liquid and gaseous refrigerant under pressure Adjustment of refrigerant charge should only be done by a qualified EPA certified technician thoroughly familiar with 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 Refrigerant Charging NOTE The unit must be charged at a fixed speed setting For this purpose the thermostat controller needs to be wired and powered prior to charging Using the thermostat go to CHARGE MODE under SERVICE TESTS from the INSTALLER SETTINGS menu described later in this document Select CHARGE MODE to add or verify system charge In the CHARGE MODE screen COOLING mode must be selected Notes condensing unit is factory charged for field installed lines 15 ft in length with the matc
27. erter parts or wiring Normal Examine the following with the control panel cover off The small red LED on the upper right side of the inverter panel should be lit and on steady when power is applied to the inverter Refer to Figure 2 Abnormal The red LED on the inverter is not lit In this case power is not being provided to the inverter Check that line voltage is being applied to the bottom of the contactor If so check that 24 vac is being provided across the contactor coil between the tabs on the right and left side of the contactor If not check the 24 vac control power source wiring to the outdoor unit Check that the high pressure switch is closed A fault indicating OD UNIT COMM FAULT or OD UNIT LOST POWER would also result from no line voltage applied The red LED on the inverter is lit but blinking This indicates that the inverter is powered up and that it detects a fault condition If the controller does not display a fault message put the unit into COOL mode and a message will be displayed Note that when line power is removed this LED will blink for about 1 minute before going out Indoor Unit Interface Board in G6 iQ furnace kit or air handler Normal The red LED at the upper left of this board should do a heartbeat blink consisting of a double blink followed by a pause repeated Note 4 other LEDS towards the lower edge of the board When the equipment is off none of the LEDs should be on If the furnac
28. eys to select ALTITUDE ADJUST Press the key to enter the screen which allows changes to the installation altitude feet above sea level This entry is advisable for the modulating gas furnace Refer also to the furnace Installation Instructions 6 Service Tests You may use the A or W keys to select SERVICE TESTS Press the key to enter the screen which allows access to a list of service tests These tests provide an easy way for the service person to operate the system in various modes for operational confirmation and diagnostic troubleshooting during installation startup The following five options are available in the submenu SERVICE TESTS CHARGE MODE FURNACE TESTS AIR COND RUN TESTS HEAT PUMP RUN TESTS DISCRETE OUTPUTS SELECT OPTION AW 4 PREVIOUS NOTE While running the system from Service Tests is convenient for some startup operations much of the normal fault handling and diagnostic message functionality is disabled Within each test screen there may be more than one entry which can be changed Select the desired entry to be modified using the and W keys The line or value with a dark background behind the characters is considered selected Press the key to allow changing the selected item its dark background will then blink Set the desired value for the item using the and V keys then press the key to save it The following is a brief description of the SERVICE TEST categories e CHA
29. has shut off before selecting another mode Adjust the operating setpoint if desired using a temporary hold pressing the A or V key when the Main Screen is displayed System Startup Checkout and Troubleshooting The following is a summary of the sequence for typical first operation to check out the system Reference is made to INSTALLER SETTINGS and SERVICE INFORMATION described above Install system hardware as described in the individual component installation instructions Install power and control wiring to all system components including the controller in accordance with the iQ Field Wiring Installation Instructions Perform pre charge evacuation of field installed refrigerant lines as described in preceding sections Apply electrical power to the system including the outdoor unit The controller screen display backlight should come on and the iQ splash screen should appear If it does not trace the 24 vac control power to the R terminal on the thermostat CONFIGURATION NEEDED should appear on the top line of the Main Screen unless the thermostat had been previously used on a similar iQ system Proceed with System Configuration from the INSTALLER SETTINGS menu described above On the SYSTEM CONFIGURATION screen verify that the using size 2 ton 3 ton or 4 ton is correct as indicated If the wrong value is shown the inverter may require re initialization Contact the service representative of the dis
30. he default delay for this changeover is 60 minutes Although There Is a Large Demand At Startup the Compressor Only Runs at Medium Speed Regardless of demand the system will always start and run at an intermediate speed for one minute Subsequently the speed may increase significantly Humidification or Dehumidification Setpoints Are Not Being Satisfied e The first priority of the system is to achieve the temperature setpoint s While under most circumstances it will also satisfy humidity setpoints its ability to accomplish this is significantly affected by a variety of installation based factors and circumstances 16 MAINTENANCE IMPORTANT Be certain the electrical power to the outdoor unit and the furnace or air handler is disconnected before doing the following recommended maintenance e Inspect the indoor air filter monthly Clean or replace it at the start of each heating and cooling season or when an accumulation of dust or dirt is visible If the indoor coil needs to be cleaned contact a qualified service technician e Inspect the condensate disposal line from the indoor coil at the beginning of the cooling season to make sure it is not obstructed e Remove any leaves grass clippings and debris from the outdoor unit coil being careful not to damage the aluminum fins Dirt may be cleared from the coil by using a water hose directed through the discharge fan grille toward the outside of the unit
31. hing indoor equipment Adjustments to the refrigerant charge will be required for other length and tube sizes For lines longer than 15 ft with a 3 8 OD liquid line add 0 52 oz per ft Small variations in the temperatures and pressures are normal due to differences in the installation e Large variations in the temperatures and pressures could indicate incorrect charge or another problem with a component in the system 2 ton 3 ton 4 ton 024K 036K 048K 10 0 Ibs 10 5 Ibs 11 8 Ibs 160 oz 168 oz 188 oz Factory Charge for 15 ft line set Additional Charge for 50 ft line set 1 1 Ibs 18 oz 1 1 Ibs 18 oz 1 1 Ibs 18 oz 2 8 105 2 8 105 44 oz 44 oz Table IV Refrigerant Charge Quantities Additional Charge for 100 ft line set 2 8 05 44 oz The preferred method of charging is by weighing in the additional refrigerant required If a charging scale is not available the next preferred charging method would be to use the sub cooling method in cooling mode Alternate Procedure for Refrigerant Charging Based on Subcooling While charging based on weight is preferred this method is acceptable Use this method when the outdoor temperature is 60 F or higher to verify the correct charge in cooling mode The indoor temperature should be between 70 F and 80 F 1 Connect the gauge manifold to the liquid and vapor service valves Figure 8 2 Start the system in CHARGE MODE COO
32. in more easily understood wording TEMPERATURE STATUS This screen lists all temperatures measured by the iQ system TEMP AT TSTAT is the local temperature used for control and it displays one decimal place without showing the decimal point e g 704 70 4 CLEAR FAULT HISTORY It is recommended that any faults that appeared during and as a consequence of installation be cleared out before leaving CALIBRATION DATA A Panasonic blower can be recalibrated at any time from this screen by pressing the key This may be done if a significant change has been made to blower discharge ducting or damper usage This screen is not normally useful to an installer Data is not displayed for type B blower motors COMMUNICATION DATA This important screen indicates the status of communication with all elements on the iQ bus All should show OK If not investigate and resolve communication wiring issues COMMUNICATION DATA BLOWER OK OUTDOOR BAD ID INTERFACE BD OK 4 PREVIOUS CCFM DATA This is not useful to the installer DEFROST STATUS This screen does not apply to air conditioning units CAPACITY CONTROL This screen contains information primarily relating to the status of the outdoor iQ unit Target and actual speeds are shown for the compressor outdoor fan and indoor blower The line above ROOM TEMP displays helpful system status messages including whether or not the system is dehumidifying during cooling C
33. ine sizes Refer to Table for the proper size of field supplied lines The maximum allowable refrigerant line length is 100 ft Liquid Line up to 24 ft 25 to 39 ft 40 to 75 ft 75 p 100 up P 100 Vapor Line Line Set Length 3 4 in 7 8 in 7 8 in 1 1 8 in 3 8 in 19 mm 22 mm 22mm 29 mm 10 mm 7 8 in 7 8 in 1 1 8 in 1 1 8 in 3 8 in 22 mm 22 mm 29 mm 29 mm 10 7 8 in 7 8 in 1 1 8 in 1 1 8 in 3 8 in 048K Units 22 mm 22 mm 29 29 mm 10 mm Table Ill Permissible Refrigerant Line Sizes The maximum vertical elevation between the condensing unit and indoor coil is 50 ft Systems that require more elevation will need to have an oil trap installed in the vapor line Refer to Nordyne Application Guideline for Refrigerant Lines Over 75 Feet document 044B 0600 for piping details A filter drier is supplied with the unit It is required and recommended that it be installed near the indoor coil It is recommended to replace existing refrigerant lines that were previously used for an R 22 system If the lines are not replaced they must be properly flushed by a licensed EPA certified technician in accordance with the manufacturer s instructions and established procedures Brazing Use the appropriate safety equipment while brazing Items such as gloves safety glasses proper ventilation and a fire extinguisher should be used 1 Route the refrige
34. key to allow changing the setting e Use the or V key to change the value between NON PROGRAMMABLE 4 SCHED EVENTS DAY 2 11 SCHED EVENTS DAY and 2 EVENTS D BUSINESS Then press the key to save the setting The difference between 2 EVENTS D BUSINESS and 2 SCHED EVENTS DAY is only the name given to the time blocks within a daily schedule e Press the key multiple times to return to the Main Screen 4 Dehumidification When dehumidification is enabled as it is by default the system will depending upon the conditions suspend responding to room temperature and lower blower speed to enhance removal of moisture from the air circulating through the indoor coil When operating in this manner the unit will run cycles of 10 minutes dehumidifying 5 minutes normal cooling adjusting capacity See also setting the humidity setpoints in 6 below In order to change the dehumidification option do the following e From the Main Screen press the 4 gt key to select MENU at the bottom of the screen then press the key to see the Main Menu e Use the A or V key to select SETTINGS then press the key to enter the Settings menu Use the A or V key to select OPTIONS then press the key to enter the Options screen e Use the or key to select the value under DEHUMIDIFICATION then press the key to allow changing the setting e Use the A or V key to change the value between
35. llow the refrigerant charge adjustment procedure explained above 10 When charge adjustment is completed if required run the system in cooling mode This may also be done using SERVICE TESTS although some diagnostic messages are disabled in that method 11 Check the FAULT STATUS screen described above for any faults logged during the startup process Any message listed as ACTIVE FAULT refers to a condition which either still exists or occurred within the preceding 5 minutes Every fault or notification should appear in the FAULT HISTORY log which starts on the same screen The last 10 faults to have occurred are retained in this list Each new item pushes other logged faults down in the list The second line associated with each of the 10 entries includes the time and date of detection While the wording of fault messages is intended to provide a reasonable indication as to the responsible condition the information conveyed by the abbreviated wording is limited Consequently the installer should refer to training literature for further information in understanding fault messages 12 If needed make use of information provided below under Troubleshooting What to Expect with Normal Operation 13 Independently confirm operation of any accessories installed with the air conditioning system following instructions provided with that equipment 14 Complete the remainder of configuration settings and entries as specified above u
36. ly Unit placement must take into consideration the following clearances a A minimum of 18 inches must be provided between each of the four sides and any solid barrier or wall which might block free inlet air flow into the coil A minimum clearance of 36 inches is required between multiple units b The corner of the unit covered by the control access cover must be clear enough to allow comfortable access by a serviceperson c The top of the unit must be open and unobstructed to prevent recirculation of outdoor fan discharge air particularly for air conditioning usage A minimum distance of 4 feet overhead clearance is recommended Do not locate the unit in a pit with high walls on all sides Locate the unit away from overhangs which would allow water runoff or ice to fall directly onto it Avoid placing the condensing unit near sleeping quarters or windows Slab Mounting The preferred unit mounting is on an outdoor slab concrete or plastic on the ground in an area with good drainage unlikely to be affected by heavy runoff or ground settling The support slab should be level Make sure that the drain holes in the bottom of the unit are not obstructed Roof Mounting The method used for roof mounting should be designed so as not to overload roof structures nor transmit noise to the interior of the structure Refrigerant and electrical lines should be routed through suitably waterproofed openings to prevent leaking into the structure
37. nal screen titled OUTDOOR SYSTEM will appear after the SYSTEM CONFIGURATION summary screen AIR COND IQ should appear on the second line no other option may be selected in this screen Press the key to proceed OUTDOOR SYSTEM AIR COND 10 CAPACITY TONS STAGES 2ND STG DIFFERENTIAL AIR FLOW CFM PER TON SELECT AW 4 PREVIOUS CHANGE NEXT gt Proceed through the subsequent configuration screens either accepting or changing entries until the INSTALLER SETTINGS menu is displayed again This is an indication that configuration has been completed 2 Accessories Use the A or V keys to select ACCESSORIES Press the key to enter the accessories submenus and screens This set of screens allows the installer to trigger alerts reminders when periodic maintenance is recommended for any of the following accessories e filter e Humidifier e U V lamp e cleaner If desired set the maintenance alert timing for any of these based on either hours of operation or calendar time When triggered by the passing of the selected time or operating hours the maintenance reminder message string will be displayed on the top of the Main Screen In addition at the base of the Main Screen CANCEL ALERT will appear When this is selected and the key is pressed the maintenance reminder message will be removed ACCESSORIES AIR FILTER HUMIDIFIER UV LAMP AIR CLEANER SELECT OPTION AW lt PR
38. nder Installer Settings and Other Configuration Entries SYSTEM DIAGNOSIS AND TROUBLESHOOTING The following is a summary of normal and abnormal operation for typical startup to check out the system Reference is made to INSTALLER SETTINGS and SERVICE INFORMATION screens described above Refer to training literature for more details Diagnostic information for the air conditioning system can be obtained from all of the following sources e Controller displays Refer to training materials for interpretation of fault messages which appear on the Main Fault Status and Service Needed screens e Refrigerant system pressure and temperature measurements using standard field service instrumentation e LED indicator lights on each of the system s circuit boards see below 14 Controller Normal As soon as 24 vac power is applied the blue backlight of the controller should light up The iQ splash screen will display the software version If the System Configuration procedure has not been performed yet for this system controller combination CONFIGURATION NEEDED will be displayed across the top alternating with other information Ifthe system has a Type P blower motor shown on SYSTEM CONFIGURATION and INDOOR FAN STATUS screens used in air handlers or G6 gas furnaces the blower will self calibrate for 60 seconds as soon as System Configuration is completed communications links in COMMUNICATION DATA should
39. ning of heating operation or the reverse DISABLE removes AUTO as an available mode Otherwise the time may be selected from 15 to 120 minutes default 60 minutes In order to modify the value do the following e From the Main Screen press the 4 or key to select MENU at the bottom of the screen then press the key to see the Main Menu e Use the or V key to select SETTINGS then press the key to enter the Settings menu Use the A or V key to select OPTIONS then press the key to enter the Options screen OPTIONS PROGRAM SCHED USAGE 4 SCHED EVENTS DAY DEHUMIDIFICATION ON AUTO CHANGEOVER TIME 60 MINUTES SMART RECOVERY OFF SELECT AY 4 PREVIOUS CHANGE e Use the A or V key to select the value under AUTO CHANGEOVER TIME then press the Bl key to allow changing the setting e Use the or V key to change the value then press the key to save the setting e Press the 4 key multiple times to return to the Main Screen 2 Date and Time Setting date and time early in the installation process not only saves the homeowner from having to do it but provides an accurate time and date stamp for any faults logged during installation checkout for example in FAULT HISTORY By default the clock is in 12 hour format This may be changed on the OPTIONS menu screen see either of the above two items Daylight Saving Time is automatically taken into account but may be disabled from the SET DAT
40. on network properly Common Troubleshooting Issues Compressor Does Not Start Immediately e For normal operation without changing modes of operation the compressor will not restart until 5 minutes the minimum off time have expired since it shut off last minimum demand of 0 5 F is required before the air conditioner will start up system will wait 5 minutes following detection of a fault condition before attempting a restart Compressor Does Not Shut Off Immediately e For normal operation without changing modes of operation the compressor will not shut off until 5 minutes the minimum run time have expired since it started last 15 The Outdoor Fan Does Not Shut Off When the Compressor Does e For normal operation the outdoor fan is designed to run for 30 seconds after the compressor shuts off In Cooling the Blower Slows Down and the Unit Is Not Responding to Room Temperature e Slowing of blower speed and suspension of normal capacity control will occur when the unit goes into Dehumidification If conditions for dehumidification persist the unit will run cycles of 10 minutes in dehumidification 5 minutes in normal cooling responding to room temperature The System Is In AUTO Mode but It Won t Switch Quickly From Heating to Cooling or the Reverse e There is a configurable delay Auto Changeover Time between operating in heating and restarting in cooling or the reverse when in AUTO mode T
41. parate cable or pair of wires for control power Refer to wiring diagram Figure 4 and Table Il 1 Pass the 5 control wires into the hole in the lower right side of the control panel of the outdoor unit into the separate low voltage wiring compartment See Figures 5 and 6 2 Locate the 5 corresponding factory wired leads with stripped ends Assure that each of these 5 wires on the factory wiring side of the wire connections loops around and through the donut toroidal choke Refer to Figure 7 which shows one wire making a single loop 3 Connect each of the 5 field run wires to its factory wired counterpart using a wire nut as indicated in Figures 4 5 and 6 4 Replace the control panel cover before applying power A IMPORTANT Trace the factory installed red wire to determine which wire color scheme shown in Figure 6 matches the unit The wires reserved for 24 volt control power are either GRY and RED in units made starting mid 2009 or BLK and YEL with black stripes in units made prior to mid 2009 It is critical that the wires meant to connect to 24 vac control power are not mistakenly connected to the communication bus wires 24 volts applied to the communication bus will damage the equipment Communication Wiring Interface Board M Outdoor unit wire color plug wire color YEL YEL or RED or RED DX WHT WHT DX GND GRN GRN Interface Board Terminal DX Inverter terminal DX
42. rant lines from the indoor coil to the service valves on the outdoor unit Avoid sharp radius bends and turns 2 Make sure that the vapor line is properly insulated for the entire length of the run for maximum system efficiency Improper insulation may also create condensation and result in water damage to the equipment and building structure 3 Remove the valve cores from the unit s service valves Wrap the valves completely with wet rags to protect them from overheating during the brazing operation 4 Connectboth the vapor and liquid lines Tubes should be round de burred and free of debris Use a phosphorous and copper or silver brazing alloy for the joints Do not use soft solder with a low melting point 5 Connect the indoor lines according to the indoor unit instructions The indoor coil will require the same alloys and wet rags to protect the sensors from excessive heat on the refrigerant lines 6 Allow the service valves to cool and replace the valve cores 7 Leak test the connections using low pressure dry nitrogen System Evacuation 1 Connect the refrigerant gauge manifold to both the vapor and liquid service valves See Figure 8 Connect the center port to the vacuum pump 2 Open both manifold valves and start the vacuum pump After a short time it is recommended to close the manifold valves and stop the vacuum pump to look for a rapid loss of vacuum Loss of vacuum indicates that there is a leak in the system R
43. select OPTIONS then press the key to enter the Options screen Use the A or key to select the value under SMART RECOVERY then press the lil key to allow changing the setting Use the A or V key to change the value between OFF the default then press the key to save the setting Press the 4 key multiple times to return to the Main Screen System Operation Quick Start The following is a summary of the sequence for typical operation of the system 1 2 Set the date and time if not already set Check the program schedule for desired setback and modify if desired From the main screen check set the Fan operating mode e AUTO operates the fan indoor blower when the unit is cooling or heating This is the normal setting operates the fan at the selected speed at all times The selected speed may change when the compressor electric heat or furnace is operating e PROGRAMMED FAN operates the fan in AUTO ON as specified in the program schedule From the main screen check set the Mode e COOL runs the air conditioner using the cooling setpoint e gas furnace or electric heat whichever is configured using the heating setpoint e OFF terminates either of the above Note that equipment may not shut off immediately after switching to OFF due to various system limitations Once put into the OFF mode wait until the furnace or compressor
44. tributor in this case Onthesame screen the entries under COMMUNICATION should be followed by OK If CHECK appears for a communication item go to the COMMUNICATION STATUS screen in the SERVICE INFORMATION menu described above and view which elements are not communicating Trace and check the three communication wires throughout the system If isolating a communication problem proves to be difficult it may be useful to disconnect all communication wires except those which link the thermostat and the non communicating element If COMMUNICATION STATUS was not checked during the previous step check it at this time All listed items should show a status of OK If any show BAD determine the source of the problem as indicated in the previous step and resolve Set date and time as described above This will provide a time stamp for any fault which may arise during system checkout If the installation includes a new gas furnace check out its operation first This may be best accomplished from FURNACE TESTS under SERVICE TESTS from the INSTALLER SETTINGS menu see above Follow steps instructions provided in the furnace s installation instructions Be sure to verify blower operation during the test If the outdoor temperature is above 60 F 14 C test the refrigerant system running in cooling mode This may best be accomplished from CHARGE MODE under SERVICE 13 TESTS from the INSTALLER SETTINGS menu Fo
45. uction document 709031 provided in the iQ thermostat controller kit iQ Thermostat Controller Users 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 TABLE OF CONTENTS PREPARATION eer nmm 3 Slab MOUNUN tapis taedis du E Ca sup RAM MUR DNUS MD ER 3 ee ees dudas 3 ELECTRICAL CONNECTIONS fe e 3 Electrical Power WIrINg err s 3 Moule ris 4 4 REFRIGERANT LINE CONNECTIONS ianua saxa anu ux acc n aS xpi 4 18 sto MET S Ec 4 gt 5 SUSIET 5 Refrigerant ChargiNg E ER 5 Alternate Procedure for Refrigerant Charging Based on 6 SYSTEM SETUP USING THE IQ CONTROLLER 52 6 General MN 6 tutes dee atte
46. wer and ground wires 3 wires including earth ground from the disconnect box to the unit Use of outdoor shielded conduit metal lined Sealtite is required The electrical conduit opening is located on the lower left corner of the control box 3 Connect the power wires to L1 and L2 box lugs of the contactor and the ground wire to the grounding lug to the left of the contactor See Figures 2 and 3 Only copper wires should be used 4 Replace the control panel cover before applying power Control Circuit Wiring The air conditioning unit is designed to operate with a 24 VAC Class control circuit Control circuit wiring must comply with the latest version of the National Electrical Code ANSI NFPA 70 as supplemented by local building codes In general 24 VAC control power and communication bus wiring must be run to interconnect the thermostat controller the indoor unit and the outdoor unit The hub of this network and source of the 24 VAC is located within the indoor unit air handler or furnace Refer to iQ Drive System Field Wiring Instructions NORDYNE document 709031 shipped with the controller for connection of control wires to the indoor unit and for description of other indoor field wiring including to the controller Five 5 wires must be run between the indoor unit and the outdoor unit 2 for 24 VAC power and 3 for communications Use one shielded cable 3 or more conductors for communications only and a se
47. when anything but OFF is selected and saved The user may navigate to other screens e g SERVICE INFORMATION during the process until RUN in this screen is changed back to OFF and saved The red blinking backlight serves as a reminder that the unit is operating in an abnormal service mode This screen is primarily intended for test agency usage Heat pump run tests apply only to heat pump units Select OFF and SAVE when finished e DISCRETE OUTPUTS When the unit is off this screen allows the user to operate certain relay driven outputs in the system for diagnostic purposes humidifier on the indoor interface board or blower control board and indoor coil EXV on the indoor interface board or blower control board The others do not apply to this air conditioning unit One or both of these can be set to ON at the same time Leaving the DISCRETE OUTPUTS screen will shut all of the listed outputs off The SERVICE INFORMATION Screens Typically when any of these service tests is being performed the serviceperson should check operation visually with special instrumentation if available and view operational data on the SERVICE INFORMATION screens Refer to iQ Drive training information for how to view these screens SERVICE INFORMATION FAULT STATUS COMPRESSOR STATUS OUTDOOR FAN STATUS INDOOR FAN STATUS FURNACE STATUS TEMPERATURE STATUS CLEAR FAULT HISTORY CALIBRATION DATA COMMUNICATION DATA CCFM DATA DEFROST STA
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