InstallatIon InstructIons - Nortek Global HVACenora.nortekhvac.com/literature/708479b.pdfInstallatIon InstructIons Do not DEstroY. PlEasE rEaD carEFullY anD KEEP In a saFE PlacE For

InstallatIon InstructIons

Do not DEstroY. PlEasE rEaD carEFullY anD KEEP In a saFE PlacE For FuturE rEFErEncE.

IMPortant

attEntIon InstallErs:It is your responsibility to know this product better than your customer. this includes being able to install the product according to strict safety guidelines and instructing the customer on how to operate and maintain the equipment for the life of the product. safety should always be the deciding factor when installing this product and using common sense plays an important role as well. Pay attention to all safety warnings and any other special notes highlighted in the manual. Improper installation of the furnace or failure to follow safety warnings could result in serious injury, death, or property damage.

these instructions are primarily intended to assist qualified 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. return these instructions to the customer’s package for future reference.

single & three Phase, r-22, 1- 5 ton units

IMPortant saFEtY InForMatIon ................. 2unIt InstallatIon ............................................ 3General Information ....................................................... 3Before You Install the Unit .............................................. 3Locating the Equipment ................................................. 3Packaging Removal ....................................................... 3Ground Level .................................................................. 3Rooftop .......................................................................... 3Connecting Refrigerant Tubing Between theIndoor & Outdoor Unit .................................................... 4

ElEctrIcal WIrIng ........................................... 4Pre-Electrical Checklist .................................................. 4Line Voltage ................................................................... 4Thermostat / Low Voltage Connections ......................... 5Grounding ...................................................................... 5Unbalanced 3-Phase Supply Voltage ............................. 5Reverse Rotation Verification ......................................... 6

startuP & aDjustMEnts ............................... 6Pre - Start Checklist ....................................................... 6Start-up Procedures ....................................................... 6Air Circulation - Indoor Blower ....................................... 6Short Cycle Protection ................................................... 6System Cooling .............................................................. 6System Heating .............................................................. 6Defrost Cycle Timer ....................................................... 6Defrost Control Board .................................................... 7

Operational Information ............................................... 7Normal Defrost Operation............................................ 7Defrost Test Procedure ................................................ 7

Anti Short Cycle Timer Test ............................................ 7Refrigerant Charging...................................................... 7Charging the Unit in AC Mode withOutdoor Temperatures Above 55° F............................... 8

unIt MaIntEnancE ............................................ 8coMPonEnt FunctIons .................................. 9rEPlacEMEnt Parts ........................................ 9

chargIng tablEs - coolIng MoDE ........... 10Air Conditioner Charging Tables ................................. 10

Table 2. Charging Table for 1 Ton Units ..................... 10Table 3. Charging Table for 1.5 Ton Units .................. 11Table 4. Charging Table for 2 Ton Units ..................... 11Table 5. Charging Table for 2.5 Ton Units .................. 11Table 6. Charging Table for 3 Ton Units ..................... 12Table 7. Charging Table for 3.5 Ton Units .................. 12Table 8. Charging Table for 4 Ton Units ..................... 12Table 9. Charging Table for 5 Ton Units ..................... 13

Heat Pump Charging Tables ....................................... 13Table 10. Charging Table for 1 Ton Units ................... 13Table 11. Charging Table for 1.5 Ton Units ................ 13Table 12. Charging Table for 2 Ton Units ................... 14Table 13. Charging Table for 2.5 Ton Units ................ 14Table 14. Charging Table for 3 Ton Units ................... 14Table 15. Charging Table for 3.5 Ton Units ................ 15Table 16. Charging Table for 4 Ton Units ................... 15Table 17. Charging Table for 5 Ton Units ................... 15

chargIng tablEs - hEatIng MoDE ............ 16Table 18 Charging Table for 1 Ton Units .................... 17Table 19. Charging Table for 1.5 Ton Units ................ 17Table 20. Charging Table for 2 Ton Units ................... 17Table 21. Charging Table for 2.5 Ton Units ................ 18Table 22. Charging Table for 3 Ton Units ................... 18Table 23. Charging Table for 3.5 Ton Units ................ 18Table 24. Charging Table for 4 Ton Units ................... 19Table 25. Charging Table for 5 Ton Units ................... 19

WIrIng DIagraMs ............................................ 20Figure 2. Single Phase Air Conditioner ...................... 20Figure 3. Three Phase Air Conditioner ...................... 21Figure 4. Single Phase Heat Pump ........................... 22Figure 5. Three Phase Heat Pump ............................ 23

Install. / PErForMancE chEcKlIst ......... 24

Export series split system air conditioners & heat Pumps

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WarnIng:ElEctrIcal shocK, FIrE or EXPlosIon haZarD

Failure to follow safety warnings exactly could result in serious injury or property damage.

Improper servicing could result in dangerous operation, serious injury, death or property damage.

• Before servicing, disconnect all electricalpower to the indoor blower.

• Whenservicingcontrols,labelallwirespriorto disconnecting. reconnect wires correctly.

• Verifyproperoperationafterservicing.

WarnIng:split system air conditioners & heat Pumps leave the factory with a nitrogen holding charge. Follow all charging instructions for maximum unit performance and efficiency. some local codes require licensed installation/service personnel to service this type of equipment. refrigerant charging must be done by qualified personnel familiar with safe and environmentally responsible refrigerant handling procedures. under no circumstances should the owner attempt to install and/or service this equipment. Failure to comply with this warning could result in property damage, personal injury, or death.

cautIon:split system air conditioners & heat Pumps use r-22 refrigerant. Do not use any other refrigerant in these units. use of another refrigerant will damage these units.

WarnIng:unless noted otherwise in these instructions, only factory authorized parts or accessory kits may be used with this product. 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.

WarnIng:the information listed below and the next page must be followed during the installation, service, and operation of this furnace. Failure to follow safety recommendations could result in possible damage to the equipment, serious personal injury or death.

• The installer must comply with all local codes andregulations 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.

• Thisequipmentcontainsliquidandgaseousrefrigerantunder high pressure. Do not usE anY PortIon oF thE chargE For PurgIng or lEaK tEstIng.Installation or servicing should only be performed by qualified trained personnel thoroughly familiar with this type equipment.

• Allelectricalwiringmustbecompletedinaccordancewith local, state and national 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.

• Installation of equipment may require brazingoperations. Installer must comply with safety codes and wear appropriate safety equipment (safety glasses, work gloves, fire extinguisher, etc.) when performing brazingoperations.

• Followallprecautions in the literature,ontags,andon 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.

• Usecautionwhenhandlingthisapplianceorremovingcomponents. Personal injury can occur from sharp metal edges present in all sheet metal constructed equipment.

• Fullyannealed,refrigerantgradecoppertubingshouldbe used when installing the system. Refrigerant suction line tubing should be fully insulated.

• Thisunitisdesignedforoutdoorinstallationsonlyandshould be positioned as described on page 3.

IMPortant saFEtY InForMatIonINSTALLER: Please read all instructions before servicing this equipment. Pay attention to all safety warnings and any other special notes highlighted in the manual. Safety markings are used frequently throughout this manual to designate a degree or level of seriousness and should not be ignored. WarnIngindicatesapotentiallyhazardoussituation that if not avoided, could result in personal injury or death. cautIon indicates a potentially hazardoussituation that if not avoided, may result in minor or moderate injury or property damage.

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unIt InstallatIongeneral InformationSplit system series air conditioners and heat pumps are designed only for outdoor rooftop or ground level installations. These units have been tested for capacity and efficiency in accordance with AHRI Standards and will provide many years of safe and dependable comfort, providing they are properly installed and maintained. Abuse, improper use, and/or improper maintenance can shortenthelifeoftheapplianceandcreateunsafehazards.

Toachieveoptimumperformanceandminimizeequipmentfailure, it is recommended that periodic maintenance be performed on the unit. The ability to properly perform maintenance on this equipment requires certain mechanical skills and tools.

before You Install the unit√ The cooling load of the area to be conditioned must be

calculated and a system of the proper capacity selected. It is recommended that the area to be conditioned be completely insulated and vapor sealed.

√ Check the electrical supply and verify the power supply is adequate for unit operation. The system must be wired and provided with circuit protection in accordance with local building codes. If there is any question concerning the power supply, contact the local power company.

√ The indoor section (air handler, furnace, etc) should be installed before routing the refrigerant tubing. Refer to the indoor unit's installation instructions for installation details.

√ All units are securely packed at the time of shipment and upon arrival should be carefully inspected for damage prior to installing the equipment at the job site. Verify coil fins are straight. If necessary, comb fins to remove flattened or bent fins. Claims for damage (apparent or concealed) should be filed immediately with the carrier.

√ Please consult your dealer for maintenance information and availability of maintenance contracts. Please read all instructions before installing the unit.

locating the Equipment• Surveythejobsitetodeterminethebestlocationfor

mounting the outdoor unit.• Overhead obstructions (Figure 1), poorly ventilated

areas, and areas subject to accumulation of debris should be avoided.

• Sufficientclearanceforunobstructedairflowthroughtheoutdoor coil must be maintained in order to achieve rated performance. See Figure 1 for minimum clearances to obstructions.

• Considerationshouldbegiventoavailabilityofelectricpower, service access, noise, and shade.

Packaging removalTo prevent damage to the tubing connections, carefully remove the carton and user’s manual from the equipment. Discard the shipping carton.

ground levelGround level installations must be located according to local building codes or ordinances and these requirements:• Clearancesmustbeinaccordancewiththoseshown

in Figure 1.• A suitable mounting pad must be provided and be

separate from the building foundation. The pad must be level and strong enough to support the unit’s weight. The slab height must be a minimum of 2” (5 cm) above grade and with adequate drainage. See Figure 1.

rooftop• The method of mounting should be designed so that it

does not overload roof structures or transmit noise to the interior of the structure. The roof must be structurally capable of handling the weight of the unit.

• Full perimeter support is required under the unit. Support must be made of weather resistant materials and installed prior to unit installation.

• Thesupportmustbebuilttoraisetheunit6"abovethe roof.

24" for Service Access

12" or 18”See Note

DO NOTOBSTRUCT

TOP OF UNIT

NOTE: Units require full perimeter clearances. Installer must maintain18” between two units or 12” between single unit and structure.

6” from Buildingor Structure

12" or 18”See Note

Figure 1. clearance requirements

2” Mounting Pad

48”

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connecting refrigerant tubing between the Indoor & outdoor unit

cautIon:When servicing, cover or seal openings to minimize the exposure of the refrigerant system to air to prevent accumulation of moisture and other contaminants.

After outdoor and indoor unit placement has been determined, route refrigerant tubing between the equipment in accordance with sound installation practices.

• When connecting refrigerant linesets together, it isrecommended that dry nitrogen be flowing through the jointsduringbrazing.Thiswillpreventinternaloxidationand scaling from occurring.

• Refrigeranttubingshouldberoutedinamannerthatminimizesthelengthoftubingandthenumberofbendsin the tubing.

• Refrigeranttubingshouldbesupportedinamannerthat the tubing will not vibrate or abrade during system operation.

• Tubingshouldbekeptcleanofforeigndebrisduringinstallation.

• Everyeffortshouldbemadebytheinstallertoensurethat the field installed refrigerant containing components of the system have been installed in accordance with these instructions and sound installation practices to insure reliable system operation and longevity.

• The maximum recommended interconnectingrefrigerant line length is 75 feet, and the vertical elevation difference between the indoor and outdoor sections should not exceed 20 feet.

• If precise forming of refrigerant lines is required, acopper tubing bender is recommended. Avoid sharp bends and contact of the refrigerant lines with metal surfaces.

• A filter dryer is provided with the unit and must beinstalled in the liquid line of the system. If the installation replaces a system with a filter dryer already present in the liquid line, the filter dryer must be replaced with the one supplied with the unit. The filter dryer must be installed in strict accordance with the manufacturer’s installation instructions.

• Optionalequipmentsuchasliquidlinesolenoidvalves,low ambient, etc., should be installed in strict accordance with the manufacturer’s installation instructions.

ElEctrIcal WIrIng

WarnIng:to avoid risk of electrical shock, personal injury, or death, disconnect all electrical power to the unit before performing any maintenance or service. the unit may have more than one electrical supply.

label all wires prior to disconnection when servicing the unit. Wiring errors can cause improper and dangerous operation

• Allelectricalconnectionsmustbeincompliancewithall applicable local codes and ordinances, and with the current revision of the National Electric Code (ANSI/NFPA 70).

• ForCanadianinstallationstheelectricalconnectionsand grounding shall comply with the current Canadian Electrical Code (CSA C22.1 and/or local codes).

Pre-Electrical checklist√ Verify that the voltage, frequency, and phase of the

supply source match the specifications on the unit rating plate.

√ Verify that the service provided by the utility is sufficient to handle the additional load imposed by this equipment. Refer to the unit wiring label for proper high and low voltage wiring.

√ Verify factory wiring is in accordance with the unit wiring diagram (Figures 2-5, pages 20-23). Inspect for loose connections.

√ Phase balance on 3 phase units must always be checked. See Unbalanced 3-Phase Supply Voltage section (page 5).

LineVoltage• Awiringdiagramislocatedontheinsidecoverofthe

electrical box of the outdoor unit. The installer should become familiar with the wiring diagram before making any electrical connections to the outdoor unit.

• an electrical disconnect must be located within sight of and readily accessible to the unit. This switchshallbecapableofelectricallyde-energizingthe outdoor unit. The means for disconnection from the supply must have a contact separation of at least 3mminallpoles.ForAustrianinstallations,a"TypeA"residualcurrentdevicemustbeused.

• Line voltage to the unit should be supplied from adedicated branch circuit containing the correct fuse or circuit breaker for the unit. Incoming field wiring andminimumsizeofelectricalconductorsandcircuitprotection must be in compliance with information listed on the outdoor unit data label. Any other wiring methods must be acceptable to authority having jurisdiction.

• Theoutdoorunitrequiresbothpowerandcontrolcircuitelectrical connections. Refer to the wiring diagrams for identification and location of outdoor unit field

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wiring interfaces. Make all electrical connections in accordance with all applicable codes and ordinances.

• Overcurrentprotectionmustbeprovidedatthebranchcircuitdistributionpanelandsizedasshownontheunitrating label and according to applicable local codes. See the unit rating plate for minimum circuit ampacity and maximum overcurrent protection limits.

• Providepowersupplyfortheunitinaccordancewiththeunit wiring diagram, and the unit rating plate. Connect the line-voltage leads to the terminals on the contactor inside the control compartment.

• Useonlycopperwireforthelinevoltagepowersupplyto this uni. Use proper code agency listed conduit and a conduit connector for connecting the supply wires to the unit. Use of rain tight conduit is recommended.

• 208/230Voltunitsareshippedfromthefactorywiredfor 230 volt operation. For 208V operation, remove the lead from the transformer terminal marked 240V and connect it to the terminal marked 208V.

• Optionalequipmentrequiringconnectiontothepoweror control circuits must be wired in strict accordance of the NEC (ANSI/NFPA 70), applicable local codes, and the instructions provided with the equipment.

Thermostat/LowVoltageConnections• Thermostatconnectionsshouldbemadeinaccordance

with the instructions supplied with the thermostat and the indoor equipment.

• Theoutdoorunitisdesignedtooperatefroma24VACClass II control circuit. The control circuit wiring must comply with the current provisions of the NEC (ANSI/NFPA 70) and with applicable local codes having jurisdiction.

• Thelowvoltagewiresmustbeproperlyconnectedtothe units low voltage terminal block.

• The thermostat should be mounted about 5 feetabove the floor on an inside wall. DO NOT install the thermostat on an outside wall or any other location where its operation may be adversely affected by radiant heat from fireplaces, sunlight, or lighting fixtures, and convective heat from warm air registers or electrical appliances. Refer to the thermostat manufacturer’s instruction sheet for detailed mounting and installation information.

grounding

WarnIng:the unit cabinet must have an uninterrupted or unbroken electrical ground to minimize personal injury if an electrical fault should occur. Do not use gas piping as an electrical ground!

This unit must be electrically grounded in accordance with local codes or, in the absence of local codes, with the National Electrical Code (ANSI/NFPA 70) or the CSA C22.1 Electrical Code. Use the grounding lug provided in the control box for grounding the unit.

Example:

AB = 451VBC = 460VAC = 453V

2. Determine the average voltage in the power supply.

3. Determine the maximum deviation:

4. Determine percent of voltage imbalance by using the results from steps 2 & 3 in the following equation.

max voltage deviationfrom average voltage

= 100 xaverage voltage

% Voltage Imbalance

= 1.32%6

454100 x

Example:

1. Measure the line voltages of your 3-phase power supply where it enters the building and at a location that will only be dedicated to the unit installation (at the units circuit protection or disconnect).

Unbalanced3-PhaseSupplyVoltageVoltage unbalance occurs when the voltages of all phases of a 3-phase power supply are no longer equal. This unbalance reduces motor efficiency and performance. Some underlying causes of voltage unbalance may include: Lack of symmetry in transmission lines, large single-phase loads, and unbalanced or overloaded transformers. A motor should never be operated when a phase imbalance in supply is greater than 2%. Perform the following steps to determine the percentage of voltage imbalance:

In this example, the measured line voltages were 451, 460, and 453. The average would be 454 volts (451 + 460 + 453 = 1,364 / 3 = 454).

The amount of phase imbalance (1.32%) is satisfactory since the amount is lower than the maximum allowable 2%. Please contact your local electric utility company if your voltage imbalance is more than 2%.

Example:From the values given in step 1, the BC voltage (460V) is the greatest difference in value from the average:

460 - 454 = 6454 - 451 = 3454 - 453 = 1

Highest Value

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notE: On 3 phase air handler models only - If blower is spinning opposite of arrow direction, shut off the main power to the unit and switch any two field wires at the disconnect. Do not alter unit wiring.

Short Cycle Protection1. Operate the system in cooling mode and observe the

temperature setting of the thermostat. Gradually raise theset-pointtemperatureuntiltheunitde-energizes.

2. Immediately lower the set point temperature of the thermostat to its original setting and verify that the indoorblower isenergizedandoutdoorunitremainsde-energized.

3. After approximately 5 minutes, verify the outdoor unit energizesandthetemperatureofthedischargeairiscooler than the room temperature.

System Cooling1. Set the thermostat’s system mode to COOL and the

fan mode to AUTO. Gradually lower the thermostat temperature setpoint below room temperature and verifytheoutdoorunitandindoorblowerenergize.

2. Verify blower wheel is spinning in direction indicated by arrow. Feel the air being circulated by the indoor blower and verify that it is cooler than ambient temperature. Listen for any unusual noises. If unusual sounds occur, determine the source of the noise and correct as necessary.

3. Verify HI and LO refrigerant pressures. notE: If refrigerant pressures are abnormal and the

compressor is rotating backwards, shut off main power to the unit and switch any two field wires at the disconnect. Do not alter unit wiring.

4. Allow the system to operate for several minutes and then set the temperature selector above room temperature. Verify the fan and compressor cycle off with the thermostat. notE: The blower should also stop unless fan switch is set to the ON position.

System Heating1. Set the thermostat's system mode to HEAT and the

temperature mode to below room temperature.2. Verify the outdoor unit and indoor fan stop running. After

5 minutes, increase the temperature on the thermostat to it's maximum setting.

3. Verifytheoutdoorunitandindoorblowerenergize.Feelthe air being circulated by the indoor blower and verify that it is warmer than ambient temperature. Listen for any unusual noises. If unusual sounds occur, determine the source of the noise and correct as necessary.

Defrost cycle timerThe defrost cycle timer controls the time interval of the hot gas defrost after the defrost sensor closes. It is located in the lower left corner of the defrost control board on the of the control panel. Three interval settings are available: 30, 60, and 90 minutes. Time setting selection is dependent on the climate where the unit is being installed.

ReverseRotationVerificationAfter making all of the power connections to the unit, the rotation of the compressor must be checked. If the rotation is in the wrong direction, the compressor will make an abnormally loud noise. To check the rotation perform the following steps:

1. Make sure the outside power disconnect is in the OFF position.

2. Set the indoor thermostat to a set point that will call for cooling.

3. Retun to the outside power disconnect and switch it to the ON position. If the compressor is making an abnormally loud noise, immediately switch the outside power disconnect to the OFF position.

4. Switch any two of the three power leads at the power connections to the unit.

5. SetReturn to the outside power disconnect and swith it to the ON position.

6. Verify that the compressor is now running properly.

start uP & aDjustMEntsPre-start check list√ Verify the unit is level and has sufficient clearances for

unobstructed airflow.√ Verify the outdoor coil and top of the unit are free from

obstructions and debris, and all equipment access/control panels are in place.

√ Verify that the line voltage power leads are securely connected and the unit is properly grounded.

√ Verify that the low voltage wires are securely connected to the correct leads on the low voltage terminal strip.

√ Verify that the power supply branch circuit overcurrent protectionissizedproperly.

√ Verify that the thermostat is wired correctly.

start-up Procedures

WarnIng:this unit is equipped with a crankcase heater. allow 24 hours prior to continuing the start up procedures to allow for heating of the refrigerant compressor crankcase. Failure to comply may result in damage and could cause premature failure of the system. this warning should be followed at initial start up and any time the power has been removed for 12 hours or longer.

Air Circulation - Indoor Blower1. Set the thermostat system mode on OFF and the fan

mode to ON.2. Verify the blower runs continuously. Check the air delivery

at the supply registers and adjust register openings for balanced air distribution. If insufficient air is detected, examine ductwork for leaks or obstructions.

3. Set the thermostat fan mode to AUTO and verify the blower stops running.

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• Indryclimates,a90minutesettingisrecommended.• Inmoistclimates,a30minutesettingisrecommended.

To set the cycle timer, place the timing pin on the defrost control board to the desired time interval post.

notE: All units are shipped from the factory with the default time setting of 30 minutes. Longer settings are recommended for drier climate areas and shorter time intervals are recommended for moist climate areas. Maximum heating performance can be acheived by setting the time to 90 minutes.

Defrost control boardOperational Information• Terminalsr - rc must have 24±V present between

them in order for the time delay and defrost sequences to be operational.

• Ajumperbetweenthet2 - DFt test pins will communicate to the board that the defrost T-stat is closed (if the compressor is running). The defrost thermostat tells the board whether a defrost cycle needs to be started or terminated. notE: The defrost T-stat is closed at 32° F or below and is open at 68° F or above, but it’s state is unknown if the temperature is between 32° F and 68° F.

• With the DFT closed, the unit will run for 30/60/90minutes in heat mode and then defrost the outdoor coil. The defrost will turn off the outdoor fan, turn on the compressor and raise the coil temperature to 68° F. This will open the DFT and terminate the defrost. If the DFT does not open the defrost will end after 10 minutes.

• Toover-ridethedefrostboardandinitiateafasterdefrosttest in 5, 10 or 15 seconds as determined by the 30, 60 or 90 minute defrost pin settings (factory setting is 30 minutes), jumper the tEst terminal to the c (common) terminal while the compressor is in heat mode.– This will bypass the compressor off delay when the

unit goes into defrost test and if left in defrost test, the delay will be bypassed when the test is terminated by the processor. notE: If the jumper is removed before the test is over, the processor will perform the remainder of a normal defrost. See bullett 2 above.

• To switch from no-delay to delay, remove the pin from the no - delay pin location and shift it to the delay pin location. The delay/no-delay pin concerns compressor operation during defrosts. The default setting is delay.– Reciprocating compressors should only use this

setting in conjunction with an approved hard start kit.

– Scroll compressors that have noise issues while going into or coming out of defrost should use this 30 second delay to reduce the defrost noise.

– Manually initiating a defrost will cause the compressor to run continually when entering defrost.

Normal defrost operationTo test normal defrost operation when the temperature is above 35° F, jumper r to DFt on the board and allow the unit to run for 30 minutes. Defrost will continue until the r to DFt jumper is removed or for 10 minutes. Remove the jumper.

The 5 minute time delay feature can be shortened 1 time to 1 second by jumping the test to c terminal. Remove the jumper and repeat as desired.

notE: If jumper is left on the test to common pins permanently, the defrost cycle will become inoperable.

Defrost Test Procedure1. Jumper t2 to DFt at the test terminals.2.Withunitrunninginheatmode,shortthetEst terminal

to the common terminal near it. This will speed up the board and cause it to enter defrost mode in 5/10/15 seconds depending on the defrost time selection. Compressor delay will not function during speed-up.

3. This test will end in 5 seconds if the tEst-common short is not removed.

4. Remove both the short and the t2 to DFt jumper to terminate the defrost cycle. The 30 second compressor delay should operate normally.

5. Test is complete, reset thermostat to home owner preference.

anti short cycle timer testThe 5 minute time delay feature can be bypassed or shortened to 1 second by jumping the test to c terminal.

notE: If jumper is left on the test to common pins permanently, the defrost cycle will become inoperable.

refrigerant charging

WarnIng:split system air conditioners & heat Pumps leave the factory with a nitrogen holding charge. Follow all charging instructions for maximum unit performance and efficiency. some local codes require licensed installation/service personnel to service this type of equipment. refrigerant charging must be done by qualified personnel familiar with safe and environmentally responsible refrigerant handling procedures. under no circumstances should the owner attempt to install and/or service this equipment. Failure to comply with this warning could result in property damage, personal injury, or death.

After refrigerant line connections are completed, it is required that you leak check and evacuate the indoor section and all line connections (using proper methods) beforefinalizingthefullsystemrefrigerantcharge.

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• Toachieveratedcapacityandefficiency,thecompressormust be exposed to refrigerant for at least 24 hours prior to running and then the compressor must be run for a minimum of 12 hours.

• Coolingmodechargingchartsareapplicableonlytomatched assemblies of NORDYNE equipment and listed airflows for the indoor coil. Outdoor units with non-AHRI lsited indoor coils are not recommended and deviations from rated airflows or non-listed combinations may require modification to the expansion device and refrigerant charging procedures for proper and efficient system operation. Refer to Table 1 for correct restrictor sizesandTables2-17(pages10-15)todeterminetheideal amount of sub-cooling for a given liquid pressure.

• Therefrigerantchargecanbecheckedandadjustedthrough the service ports provided external to the outdoor unit. Use only gage line sets which have a “Schrader” depression device present to actuate the valve. A common suction port for heating mode charging is included and located on the compressor access panel above the outdoor unit service valves.

• HeatModeVerificationTables(Tables18-25,pages17 - 19) are provided for quick reference when the unit is in heating mode and for the inspection of the liquid line pressures and temperatures.

Charging the Unit in AC Mode with Outdoor Temperatures Above 55° F (for optimized sub-cooling of 10° F to 12° F)1. With the systemoperatingat steady-state,measure

the liquid refrigerant pressure (in PSIG) at the outdoor unit service valve.

2. Measure the liquid refrigerant temperature (in Fahrenheit) at the service valve.

3. Determine the required liquid refrigerant pressure. Refer to Tables 2 - 17 (pages 10 - 15).• IfthepressuremeasuredinStep1isgreaterthan

the required liquid refrigerant pressure determined in Step 3, then there is too much charge in the system. Remove refrigerant and repeat Steps 1 through 3 until the system is correctly charged.

• IfthepressuremeasuredinStep1islessthantherequired liquid refrigerant pressure determined in Step 3, there is too little charge in the system. Add refrigerant and repeat Steps 1 through 3 until the system is correctly charged.

unIt MaIntEnancE

WarnIng:to prevent electrical shock, personal injury, or death, disconnect all electrical power to the unit before performing any maintenance or service. the unit may have more than one electrical supply.

Proper maintenance is important to achieve optimum performance from the heat pump. The ability to properly perform maintenance on this equipment requires certain mechanical skills and tools. If you do not possess these skills, contact your dealer for maintenance. Consult your local dealer about the availability of maintenance contracts. Routine maintenance should include the following:• Inspectandcleanorreplaceairfiltersatthebeginning

of each heating and cooling season, or more frequently if required.

• Inspecttheoutdoorcoilatthebeginningofeachcoolingseason. Remove any debris. Clean the outdoor coil and louvers as necessary using a mild detergent and water. Rinse thoroughly with water.

• Inspecttheelectricalconnectionsfortightnessatthebeginning of each heating and cooling season. Service as necessary.

cautIon:the unit should never be operated without a filter in the return air system. replace disposable filters with the same type and size.

• Donotaddadditionaloiltomotorsunequippedwithoiltubes. The compressor is hermetically sealed at the factory and does not require lubrication.

unit bynominaltonnage

restrictorsize (Inch)

systemcharge (oz.)

air conditioner heat Pumpac hP

Indoor Indoor outdoor

1 Ton 0.044 0.046 0.041 55 691.5 Ton 0.051 0.053 0.041 63 692 Ton 0.059 0.06 0.049 64 70

2.5 Ton 0.063 0.067 0.055 68 793 Ton 0.067 0.071 0.059 69 95

3.5 Ton 0.075 0.077 0.063 87 1034 Ton 0.082 0.082 0.065 102 1345 Ton 0.093 0.093 0.071 130 198

table 1. orifice usage for split system air conditioners & heat Pumps

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coMPonEnt FunctIons

high Pressure switch (hPs) - A high-pressure switch is factory-installed and located in the compressor discharge line internal to the outdoor unit. The switch is designed to de-energizethesystemwhenveryhighpressuresoccurduring abnormal conditions. Under normal conditions, the switch is closed. If the discharge pressure rises above 575psig,thentheswitchwillopenandde-energizetheoutdoor unit. The switch will close again once the liquid pressure decreases to 460 psig. Please note that the switchinterruptsthethermostatinputstotheunit.Whenthe switch opens and then closes, there will be a 5 minute shortcyclingdelaybeforetheoutdoorunitwillenergize.

low Pressure switch (lPs) - A low-pressure switch is factory-installed in select models only. If provided, this located in the suction line internal to the outdoor unit. The switch is designed to protect the compressor from a loss of charge. Under normal conditions, the switch is closed. If the suction pressure falls below 5 psig, then the switch willopenandde-energize theoutdoorunit.Theswitchwill close again once the suction pressure increases above 20 psig. Please note that the switch interrupts the thermostatinputstotheunit.Whentheswitchopensandthen closes, there will be a 5 minute short cycling delay beforetheoutdoorunitwillenergize.

rEPlacEMEnt PartsReplacement parts are available through all Nordyne distributors. Please have the complete model and serial number of the unit when ordering replacement parts.

Electrical:Capacitors Temperature Limit SwitchesCompressors ThermostatsContactors Time Delay RelaysPressure Switches TransformersRelays

Motors:Blower MotorFan Motorcomponents:Blower Assembly Fan GrilleCabinet Panels Filter/DriersExpansion Valves

10

rEFrIgErant chargIng tablEs - coolIng MoDE onlYapplication notes on the use of cooling mode charging tables

notEs:

1. All pressures are listed psig and all temperatures in °F2. Discharge temperatures GREATER than charted values

indicate an UNDERCHARGED system.3. Discharge temperatures LESS than charted values

indicate an OVERCHARGED system.

• this equipment’s cooling system contains refrigerant under high pressure. always use safe and environmentally sound methods when handling refrigerant handling or servicing the unit. review the factory literature and safety warnings prior to servicing.

• Whenrepairingsystemleaks,alwaysuseanitrogen(inert)gastoprotecttherefrigerantsystemandpressurecheck the repair before re-charging. Always replace the filter-dryers when performing any repair to the refrigeration system with one capable of acid removal. After completing the repairs, evacuate the system to 350 - 500 microns and weigh in the refrigerant to the amount specified on the unit rating label.

• Chargingtablesarevalidforavarietyof indoor,returnairconditionsandaremostinfluencedbytheoutdoorambient temperature, outdoor fan operation and the unit operating voltage. Before using these charts, make sure the unit is in a stable operating mode. As shown in Tables 2 - 17 (pages 10 - 15), the ideal system sub-cooling can vary over the range of operation. Reference the tables to determine the ideal amount of sub-cooling for a given liquid pressure. Units charged to other values will not perform at the rated unit efficiency (EER) or rated Coefficient of Performance (COP) in heating mode.

• Toinspectasystemsoperationusingqualityinstruments,matchthemeasuredliquidtemperaturetotheunitschart. The measured liquid pressure reading should be within 3% of the tables value for most installations.

• Forsystemsthatareoperatingwithmorethana5%deviation,inspecttheunitforthepropervoltageandphasebalance and the refrigeration system for leaks.

• Unitsthatareoperatingatlessthen95%ofthenominalvoltageorwitha2%phaseimbalancemayseeamoresignificant deviation than the amount stated above.

• Do not use the tables in systems that have a fan cycling under low-ambient control. Refer to the low-ambient kit instructions for more information. (If applicable)

lEgEnD

Shaded boxes indicate flooded conditions. Rated design values. The suction pressure will be lower than design value if outdoor air flow, entering dry bulb, or entering wet bulb temperatures are lower than design.

table 2. air conditioner charging table (1 ton units) - orifice Matches

suct.Press.

outDoor tEMPEraturE (° F)

70 75 80 85 90 95 100 105liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.7072 200 14474 202 156 215 153 227 15376 203 169 217 164 230 161 242 16178 204 179 219 173 233 170 246 169 258 16880 205 180 221 184 235 179 249 177 262 175 274 17582 223 194 238 186 252 184 266 183 278 181 290 18184 241 209 254 190 268 188 282 188 294 187 306 18786 271 193 285 192 298 193 311 19388 288 197 301 197 315 19790 304 201 318 20192 321 20494

aIr conDItIonEr rEFrIgErant chargIng tablEs

11

suct.Press.


70 75 80 85 90 95 100 105

liq.Press.

Dis.temp.

liq.Press.

Dis.temp.

liq.Press.

Dis.temp.

liq.Press.

Dis.temp.

liq.Press.

Dis.temp.

liq.Press.

Dis.temp.

liq.Press.

Dis.temp.

liq.Press.

Dis.temp.

71 178 151

73 180 156 193 154

75 182 161 195 159 208 157

77 184 164 197 163 210 162 223 160

79 187 168 200 167 213 166 226 165 238 163

81 202 171 215 170 228 169 241 168 253 166

83 218 174 231 173 244 172 256 171 268 169

85 234 177 247 176 259 175 272 173 284 172

87 237 181 250 180 262 179 275 178 287 176

89 252 184 265 183 278 182 291 181

91 268 187 281 186 294 185

93 284 190 297 189

95 300 193

97

table 3. air conditioner charging table (1.5 ton units) - orifice Matches


suc.Press.


70 75 80 85 90 95 100 105liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.69 192 16071 194 165 208 16373 196 170 210 167 224 16675 198 173 212 172 227 170 240 16877 201 176 215 176 229 175 243 173 256 17179 218 179 232 179 245 178 259 176 273 17481 234 182 248 182 262 180 276 179 289 17783 251 185 265 184 279 183 292 182 305 18085 254 189 268 188 282 187 295 186 308 18487 271 192 285 191 298 190 312 18989 287 195 301 194 315 19391 304 198 318 19793 321 20195

suc.Press.


70 75 80 85 90 95 100 105liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.67 193 15969 194 164 209 16271 196 168 211 167 225 16673 198 173 213 172 228 171 242 17075 201 176 215 176 230 176 244 174 258 17377 218 180 232 180 247 179 261 178 275 17779 235 183 250 183 264 182 278 181 292 18081 252 187 267 186 281 186 295 185 309 18483 255 191 270 190 284 190 299 189 312 18885 273 194 287 194 301 193 316 19387 290 198 304 197 319 19789 307 201 322 20191 325 20593


12


suc.Press.


70 75 80 85 90 95 100 105liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.67 198 16669 200 171 214 17071 201 176 216 174 231 17373 204 180 218 179 233 178 247 17675 206 183 221 183 235 182 249 181 263 17977 223 186 238 186 252 185 266 184 280 18379 241 190 255 189 269 188 283 187 296 18681 258 193 272 192 286 192 300 190 313 18983 260 197 275 196 289 196 303 195 316 19385 278 200 292 200 306 199 320 19887 295 204 309 203 323 20289 312 207 326 20691 329 21093


suc.Press.


70 75 80 85 90 95 100 105liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.66 190 16068 192 165 205 16370 193 169 207 168 220 16672 194 175 209 173 223 171 236 16974 197 179 211 178 225 176 238 174 252 17276 214 181 227 180 241 179 255 177 268 17578 230 184 244 183 257 182 271 180 284 17880 247 187 260 186 274 184 287 183 300 18182 249 190 263 190 277 188 290 187 304 18684 266 193 280 192 293 191 307 19086 283 196 296 195 310 19488 299 199 313 19890 316 20292

suc.Press.

outDoor tEMPEraturE (°F)

70 75 80 85 90 95 100 105liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.65 192 14367 194 148 208 14969 195 153 210 154 225 15571 195 161 212 158 228 159 243 16073 198 164 213 165 230 164 245 165 261 16675 216 168 232 169 248 170 263 170 279 17177 235 173 250 174 266 175 282 176 297 17779 253 178 269 179 285 180 300 181 316 18281 256 182 272 183 288 184 304 185 319 18683 275 187 291 188 306 189 323 19185 294 192 309 193 325 19587 312 198 328 19989 331 20391


13

suc.Press.


70 75 80 85 90 95 100 105liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.66 219 16368 220 175 233 170 246 16770 221 188 236 180 248 176 261 17672 223 204 238 190 251 184 264 180 276 178 288 17574 224 219 239 201 254 193 267 188 280 185 292 182 303 18076 241 211 256 200 270 195 283 192 296 189 308 186 317 18478 258 208 272 201 286 197 299 194 312 192 324 19080 275 207 289 202 302 199 315 197 327 19682 291 207 305 203 318 201 332 19984 308 208 321 205 335 20386 324 209 337 20688 204 340 21090


hEat PuMP rEFrIgErant chargIng tablEs

suc.Press.


70 75 80 85 90 95 100 105liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.7072 200 14474 202 156 215 153 227 15376 203 169 217 164 230 161 242 16178 204 179 219 173 233 170 246 169 258 16880 205 180 221 184 235 179 249 177 262 175 274 17582 223 194 238 186 252 184 266 183 278 181 290 18184 241 209 254 190 268 188 282 188 294 187 306 18786 271 193 285 192 298 193 311 19388 288 197 301 197 315 19790 304 201 318 20192 321 20494

table 10. heat Pump charging table (1 ton units) - orifice Matches

suc.Press.


70 75 80 85 90 95 100 105liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.71 165 14573 168 148 180 14975 171 150 183 151 196 15377 174 153 186 154 199 155 211 15679 177 157 189 157 201 158 214 159 226 16081 193 161 205 161 217 162 229 164 241 16483 208 165 220 165 232 167 244 168 257 16885 223 168 235 169 247 171 260 172 272 17387 226 171 238 172 250 173 262 175 275 17689 242 174 254 175 266 177 278 17991 257 178 269 179 281 18093 272 181 284 18295 288 18497

table 11. heat Pump charging table (1.5 ton units) - orifice Matches

14

suc.Press.


70 75 80 85 90 95 100 105liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.68 171 15870 173 161 186 16072 176 163 189 163 202 16374 179 166 192 166 205 166 218 16676 182 170 195 169 208 169 221 169 234 16978 198 172 211 172 224 172 236 172 249 17180 214 175 227 175 239 175 252 175 265 17482 230 178 243 177 255 178 268 178 281 17784 233 180 246 180 258 180 271 181 284 18186 249 183 262 182 274 183 287 18488 265 185 278 185 290 18590 281 187 293 18792 297 18894


suc.Press.


70 75 80 85 90 95 100 105liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.68 161 14970 164 152 182 15472 167 155 185 157 203 15974 170 158 188 160 206 162 224 16576 173 161 191 163 209 165 227 168 245 17078 194 167 212 168 230 171 248 173 266 17580 215 171 233 174 251 176 269 178 287 18082 236 176 254 179 272 182 290 184 308 18684 240 179 257 181 275 184 293 187 311 18986 261 184 278 186 296 189 314 19288 282 188 299 191 317 19490 303 193 320 19692 324 19794


suc.Press.


70 75 80 85 90 95 100 105liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.64 173 17566 176 178 189 17668 179 180 192 179 204 17770 182 184 195 181 207 180 220 17872 186 188 198 185 210 182 223 181 236 17874 201 188 214 186 226 184 239 182 251 17976 217 189 229 186 242 185 254 183 267 18078 233 189 245 187 257 186 270 184 283 18180 236 192 248 190 261 188 273 187 286 18582 252 192 264 190 276 189 289 18884 267 193 280 191 292 19086 283 193 295 19288 298 19390


15

suc.Press.


70 75 80 85 90 95 100 105liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.63 168 14765 171 150 185 15167 174 152 188 154 202 15669 176 154 191 157 205 159 219 16171 180 158 193 159 208 162 222 164 236 16573 197 163 211 165 225 167 239 169 253 17075 214 168 228 170 242 172 256 174 270 17577 231 173 245 174 259 177 273 179 287 18079 234 175 248 177 262 179 276 182 290 18481 252 180 265 181 279 183 293 18783 269 184 282 185 296 18785 286 187 300 18987 303 19189


suc.Press.


70 75 80 85 90 95 100 105liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.63 160 15165 163 154 178 15467 166 157 180 157 195 15869 168 158 183 160 198 161 212 16171 172 162 186 162 201 164 215 164 229 16573 189 166 203 167 218 167 232 168 246 16975 207 170 221 170 235 171 249 172 264 17377 224 173 238 174 252 175 267 176 281 17679 227 176 241 177 255 177 269 179 284 18081 245 179 259 180 273 180 287 18383 262 182 276 182 290 18385 279 184 294 18587 297 18789


suc.Press.

outDoor tEMPEraturE ( °F )

70 75 80 85 90 95 100 105liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.liq.

Press.Dis.

temp.61 166 15663 169 159 184 16165 172 161 187 164 201 16667 174 162 189 167 204 169 219 17169 177 166 192 169 207 172 222 175 236 17771 195 172 210 175 225 178 239 180 254 18373 213 178 227 181 242 183 257 186 272 18875 231 183 245 186 260 189 275 191 289 19477 234 186 249 189 263 191 278 195 292 19779 252 191 266 193 281 196 295 20181 270 196 284 198 299 20083 288 200 302 20285 305 20487


16

HeaTPUmPVeRifiCaTionTaBLeS-HeaTingmodeonLy

• read all notes and warnings for the cooling-mode charging tables prior to using these heating-mode charge verification tables. always use safe and environmentally sound methods when handling refrigerant handling or servicing the unit. review the factory literature and safety warnings prior to servicing.

• Whenrepairingsystemleaks,alwaysuseanitrogen(inert)gastoprotecttherefrigerantsystemandpressurecheck the repair before re-charging. Always replace the filter-dryers when performing any repair to the refrigeration system with one capable of acid removal. After completing the repairs, evacuate the system to 350 - 500 microns and weigh in the refrigerant to the amount specified on the unit rating label.

• Before using Tables 18 - 25 (pages 17-19), determine the outdoor ambient temperature and the return air temperature to the unit. Locate the appropriate location on the units verification table based on those measurements to determine the ideal liquid line pressure and temperature. Verify the outdoor fan and compressor are running and the outdoor coil is free from frost accumulation. Also verify the system is not operating in defrost mode before inspecting the system.

• Always use quality instruments that are in good working order to measure the actual operating point of the refrigeration system. The liquid line temperature should be within 2 degrees of the ideal value and the pressure should be within 2%.

• The most reliable way of verifying the system is at the correct charge is to evacuate the system and weigh in the charge to the amount shown on the rating label. However, if an inspection with these verification tables does not line up with the values shown and the ambient temperature is above 50˚ F, then a more accurate way to inspect the system for proper charge is with the cooling mode charging tables. Switch the unit into cooling mode and allowittooperateandstabilizeforafewminutestheninspecttheunitoperationwiththecoolingmodetablesandprocedures.

before changing the unit charge, always inspect the following items first:1. Inspect the liquid line temperature on the inlet and outlet of the filter dryers. If it is the factory dryer and in good

condition there should be no temperature difference. If the temperature difference is larger than 5˚, replace the filter dryer with one that is bi-directional and has acid removal capability. Refer to the unit RPL for the recommended partnumberandsize.

2. Inspect the units input voltage. Units operating at less than 95% of the nominal voltage may deviate more from the chart then previously stated.

3. Inspect the input voltage for a phase imbalance. Units with greater then a 2% disparity will not operate at the rated performance.

4. Verify that the unit filters are installed and are clean. The pressure drop across the filters should not exceed 0.08 in-W.C.

5. Inspect the indoor coil, indoor blower and blower motor for cleanliness, clogging, and proper operation.6. Inspect the system for leaks. If any leaks are detected, repair them immediately. Re-inspect the return air and

ambient temperatures and verify that the correct system point on the verification chart was selected.

Do not use the tables in systems that have the fan cycling under a low-ambient control. Low-ambient controls are for cooling operation. In heating mode, the low ambient control should be disabled. Unless the unit is in defrost mode, the outdoor fan should always operate in conjunction with the compressor.

application notes on the use of heating-mode charging tables:

notEs:

1. All pressures are listed psig and all temperatures in °F2. Discharge temperatures greater than charted values

indicate an undercharged system.

lEgEnD

Shaded boxes indicate flooded conditions. Rated design values. Suction pressure will vary from design value if outdoor air flow, entering dry bulb, or entering wet bulb temperatures vary.

17

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c.P

ress

.l

iq.

Pre

ss.

Dis

.te

mp

.s

uc.

Pre

ss.

liq

.P

ress

.D

is.

tem

p.

su

c.P

ress

.l

iq.

Pre

ss.

Dis

.te

mp

.s

uc.

Pre

ss.

liq

.P

ress

.D

is.

tem

p.

1310

812

321

127

128

3014

613

338

165

139

4717

115

355

186

177

6320

120

114

115

121

2213

312

631

151

131

3916

913

748

178

151

5619

317

364

208

195

1512

211

923

139

124

3215

612

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173

135

4918

514

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200

168

6521

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129

117

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233

160

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4117

613

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192

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5820

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182

1713

611

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150

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3416

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259

214

159

6722

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127

162

116

3617

512

144

187

127

5321

313

661

228

150

6924

316

4

tab

le 2

1. h

eat

Pu

mp

ch

arg

ing

tab

le (

2.5

ton

un

its)

- o

rifi

ce M

atch

es

ou

tD

oo

r t

EM

PE

ra

tu

rE

(°

F)

010

2030

4050

60

su

c.P

ress

.l

iq.

Pre

ss.

Dis

.te

mp

.s

uc.

Pre

ss.

liq

.P

ress

.D

is.

tem

p.

su

c.P

ress

.l

iq.

Pre

ss.

Dis

.te

mp

.s

uc.

Pre

ss.

liq

.P

ress

.D

is.

tem

p.

su

c.P

ress

.l

iq.

Pre

ss.

Dis

.te

mp

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uc.

Pre

ss.

liq

.P

ress

.D

is.

tem

p.

su

c.P

ress

.l

iq.

Pre

ss.

Dis

.te

mp

.13

114

133

2013

113

727

148

140

3416

614

443

175

156

5520

017

867

226

200

1412

113

121

137

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2815

313

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169

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173

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614

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164

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718

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524

155

129

3116

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180

136

4720

314

559

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160

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5

1814

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325

161

127

3217

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039

184

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260

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9

1915

612

126

166

125

3317

712

840

188

132

4921

713

961

242

151

7326

816

3

tab

le 2

2. h

eat

Pu

mp

ch

arg

ing

tab

le (

3 to

n u

nit

s) -

ori

fice

Mat

ches

ou

tD

oo

r t

EM

PE

ra

tu

rE

(°

F)

010

2030

4050

60

su

c.P

ress

.l

iq.

Pre

ss.

Dis

.te

mp

.s

uc.

Pre

ss.

liq

.P

ress

.D

is.

tem

p.

su

c.P

ress

.l

iq.

Pre

ss.

Dis

.te

mp

.s

uc.

Pre

ss.

liq

.P

ress

.D

is.

tem

p.

su

c.P

ress

.l

iq.

Pre

ss.

Dis

.te

mp

.s

uc.

Pre

ss.

liq

.P

ress

.D

is.

tem

p.

su

c.P

ress

.l

iq.

Pre

ss.

Dis

.te

mp

.9

119

138

1613

613

923

152

140

3016

914

038

176

156

4919

618

659

216

217

1012

613

617

141

137

2415

713

831

173

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3918

315

350

203

182

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0

1113

313

418

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135

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015

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210

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4

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6

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2918

112

836

191

128

4421

813

955

238

159

6525

818

0

tab

le 2

3. h

eat

Pu

mp

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arg

ing

tab

le (

3.5

ton

un

its)

- o

rifi

ce M

atch

es

19

ou

tD

oo

r t

EM

PE

ra

tu

rE

(°

F)

010

2030

4050

60s

uc.

Pre

ss.

liq

.P

ress

.D

is.

tem

p.

su

c.P

ress

.l

iq.

Pre

ss.

Dis

.te

mp

.s

uc.

Pre

ss.

liq

.P

ress

.D

is.

tem

p.

su

c.P

ress

.l

iq.

Pre

ss.

Dis

.te

mp

.s

uc.

Pre

ss.

liq

.P

ress

.D

is.

tem

p.

su

c.P

ress

.l

iq.

Pre

ss.

Dis

.te

mp

.s

uc.

Pre

ss.

liq

.P

ress

.D

is.

tem

p.

1512

512

819

137

130

2315

013

128

162

133

3817

514

354

213

161

7025

117

916

132

126

2014

312

824

154

129

2916

613

139

182

140

5522

015

771

258

173

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912

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126

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730

169

129

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913

756

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152

7226

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512

426

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125

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158

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143

7427

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286

148

2116

711

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172

118

2917

811

934

184

121

4421

712

660

255

134

7629

314

2

tab

le 2

4. h

eat

Pu

mp

ch

arg

ing

tab

le (

4 to

n u

nit

s) -

ori

fice

Mat

ches

OU

TD

OO

R T

EM

PE

RAT

UR

E (

° F

)

010

2030

4050

60S

uc.

Pre

ss.

Liq.

Pre

ss.

Dis

.Te

mp.

Suc

.P

ress

.Li

q.P

ress

.D

is.

Tem

p.S

uc.

Pre

ss.

Liq.

Pre

ss.

Dis

.Te

mp.

Suc

.P

ress

.Li

q.P

ress

.D

is.

Tem

p.S

uc.

Pre

ss.

Liq.

Pre

ss.

Dis

.Te

mp.

Suc

.P

ress

.Li

q.P

ress

.D

is.

Tem

p.S

uc.

Pre

ss.

Liq.

Pre

ss.

Dis

.Te

mp.

811

613

416

140

139

2516

314

433

187

149

4119

915

950

222

175

5924

619

19

123

132

1714

613

726

168

142

3419

014

742

206

156

5122

917

060

253

185

1013

013

018

151

135

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314

035

194

145

4321

315

352

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166

6126

017

911

137

128

1915

713

328

178

138

3619

814

344

220

151

5324

316

262

267

173

1214

412

620

163

131

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213

637

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4522

714

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250

157

6327

416

613

151

124

2116

912

930

187

134

3820

513

946

234

145

5525

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364

281

160

1415

812

222

175

127

3119

213

239

209

137

4724

114

256

264

148

6528

815

4

tab

le 2

5. h

eat

Pu

mp

ch

arg

ing

tab

le (

5 to

n u

nit

s) -

ori

fice

Mat

ches

20

Figure 2. Wiring Diagram for single Phase air conditioners

ElEctrIcal DIagraMs

AS

CT

T2

T1

T3

SE

E N

OT

E 6

CR

AN

KC

AS

EH

EAT

ER

(OP

TIO

NA

L)

C

SR

CO

MP

RE

SS

OR

L1L2

GR

ND

(1 P

HA

SE

FIE

LD S

UP

PLY

)

GR

OU

ND

ING

SC

RE

W

L1L2

T1

T2

CONTACTOR

DU

AL

CA

PAC

ITO

R

F

C H

SR

C BLA

CK

or

BLA

CK

WH

ITE

RED or RED BLACK

OR

AN

GE

BLU

E

BLA

CK

OU

TD

OO

R

FAN

MO

TOR

YELLOW orYELLOW BLACK

STA

RT

CA

PAC

ITO

R

STA

RT

RE

LAY

32 1

BLA

CK

YEL

LOW

RED

YEL

LOW

RED

or Y

ELLO

W

BLA

CK

YELLOW

BLACK

BLACK

BLACK

(SE

E N

OT

E 7

)

esah

P elg

niS

)n

oitceS r

oo

dtu

O( ren

oitid

no

C riA

metsyS til

pSW

IRIN

G D

IAG

RA

M

NO

TE

S:

1. D

isco

nn

ect

all p

ow

er b

efo

re s

ervi

cin

g.

2. F

or

sup

ply

co

nn

ecti

on

use

co

pp

er c

od

uct

ors

on

ly.

3. N

ot

suit

able

on

sys

tem

s th

at e

xcee

d 1

50 v

olt

s to

gro

un

d.

4. F

or

rep

lace

men

t w

ires

use

co

nd

uct

ors

su

itab

le fo

r 10

5° C

5. F

or

amp

acit

ies

and

ove

rcu

rren

t p

rote

ctio

n, s

ee u

nit

rat

ing

pla

te.

6. C

on

nec

t to

24

vac/

40va

/cla

ss 2

cu

rcu

it. S

ee f

urn

ace/

air

han

dle

r in

stal

lati

on

in

stru

ctio

ns

for

con

tro

l cir

cuit

an

d o

pti

on

al r

elay

/tra

nsf

orm

er k

its.

7. A

nti

-Sh

ort

Cyl

ce T

imer

(A

SC

T)

may

or

may

no

t b

e in

stal

led

in t

he

un

it. I

f d

esir

ed,

A

SC

T is

fac

tory

inst

alle

d o

n s

elec

t m

od

els

on

ly o

r m

ay b

e fi

eld

inst

alle

d a

s sh

ow

n

usi

ng

man

ufa

ctu

rer’

s ap

pro

ved

kit

. If

no

t p

rese

nt,

con

nec

t Yel

low

an

d B

lack

wir

es p

er N

ote

6.

1. C

ou

per

le c

ou

ran

t av

ant

de

fair

e le

tret

ien

.2.

Em

plo

yez

un

iqu

emen

t d

es c

on

du

cteu

rs e

n c

uiv

re.

3. N

e co

nvie

nt

pas

au

x in

stal

lati

on

s d

e p

lus

de

150

volt

a la

ter

re.

7102

26C

(Rep

lace

s 71

0226

B)

FIE

LD W

IRIN

G

LEG

EN

D:

LOW

VO

LTA

GE

HIG

H V

OLT

AG

E

208/

230V

CC

AS

CTA

SC

T(S

EE

NO

TE

7)

H

C

F

CC

H (

OP

TIO

NA

L)

R

C

S S

C

R

L2 T2

CO

MP

RE

SS

OR

CO

NTA

CT

S

L1 T1

CO

MP

RE

SS

OR

OU

TD

OO

R F

AN

MO

TOR

24 V

OLT

FIE

LDC

ON

NE

CT

ION

SC

C -

CO

NTA

CTO

R C

OIL

CC

H -

CR

AN

KC

AS

E H

EAT

ER

¢710226{¤

7102

26C

21

1. C

ou

per

le c

ou

ran

t av

ant

de

fair

e le

tret

ien

.2.

Em

plo

yez

un

iqu

emen

t d

es c

on

du

cteu

rs e

n c

uiv

re.

7108

650

(Rep

lace

s 70

3608

E)

1208

FIE

LD W

IRIN

G

LEG

EN

D:

LOW

VO

LTA

GE

HIG

H V

OLT

AG

E

WIR

ING

DIA

GR

AM

Sp

lit S

yste

m A

ir C

on

dit

ion

er (

Ou

tdo

or

Sec

tio

n) T

hre

e P

has

eN

OT

ES

:1.

Dis

con

nec

t al

l po

wer

bef

ore

ser

vici

ng

.2.

Fo

r su

pp

ly c

on

nec

tio

ns

use

co

pp

er c

un

do

cto

rs o

nly

.3.

Fo

r re

pla

cem

ent

wir

es u

se c

on

du

cto

rs s

uit

able

for

105

deg

. C.

4. F

or

sup

ply

wir

e am

pac

itie

s an

d o

verc

urr

ent

pro

tect

ion

, see

un

it r

atin

g p

late

.5.

Co

nn

ect

to 2

4 va

c/40

va/

clas

s 2

circ

uit

. S

ee f

urn

ace/

air

han

dle

r in

stal

lati

on

in

stru

ctio

ns

for

con

tro

l cir

cuit

an

d o

pti

on

al r

elay

/tra

nsf

orm

er k

its.

¢710865:¤

T1

T2

L1L2

T3

L3

GN

D

T3 T1

T2

C

S R

L1L2

L3

CO

MP

RE

SS

OR

OU

TD

OO

R F

AN

MO

TOR

CONTACTOR

GR

OU

ND

ING

LU

G

TH

RE

E P

HA

SE

FIE

LD S

UP

PLY

CA

PAC

ITO

R

RE

D

YE

LLO

W

BLA

CK

BLU

E

OR

AN

GE

BLA

CK

BLA

CK

SE

E N

OT

E 5

YE

LLO

W

BLACK

BLACK

BLA

CK

CC

SC

R

L1L2

L3

Out

door

Fan

Mot

or

24 V

OLT

FIE

LD

CO

NN

EC

TIO

NS

Com

pres

sor

Con

tact

s

Cap

acito

r

Com

pres

sor

T3

T2

T1

BLA

CK

YE

LLO

W

CC

H

CC

- C

ON

TAC

TOR

CO

IL

CC

H -

CR

AN

KC

AS

E H

EAT

ER

Figure 3. Wiring Diagram for three Phase air conditioners

22

T1

T2 C Y O W2 R DF

TE

DF

1D

F2

O

DE

FR

OS

T C

ON

TR

OL

BO

AR

D

DE

FR

OS

TT

HE

RM

OS

TAT

CO

NTA

CTO

R

RE

VE

RS

ING

VA

LVE

SE

LEN

OID

H

C

S R

C

S R

F

T1

T2

L2L1

CC

H(I

F E

QU

IPP

ED

)

CO

MP

RE

SS

OR

OU

TD

OO

RFA

N M

OTO

R

GR

OU

ND

ING

LUG

SIN

GLE

PH

AS

EF

IELD

SU

PP

LY

PT

CR

C

BLA

CK

BLA

CK

RE

D

RE

D

BLA

CK

BLA

CK

BLACK

BLU

E

OR

AN

GE

OD

T (

IFE

QU

IPP

ED

)

YE

LLO

W

YE

LLO

WY

ELL

OW

PT

CR

(IF

EQ

UIP

PE

D)

CC

LLS

(IF

EQ

UIP

PE

D)

LPS

(IF

EQ

UIP

PE

D)

BLA

CK

YE

LLO

W

RE

DY

ELL

OW

BLUE

BLACK

BLACK

7108

890

0309

Sp

lit S

yste

m H

eat

Pu

mp

(

Ou

tdo

or

Sec

tion

)N

OT

ES

:1.

Dis

con

nec

t al

l pow

er b

efo

re s

ervi

cin

g.

2.

Fo

r su

pp

ly c

on

nec

tion

s u

se c

op

per

co

nd

uct

ors

on

ly.

3.

No

t su

itab

le o

n s

yste

ms

that

exc

eed

150

vo

lts t

o g

rou

nd

.4.

Fo

r re

pla

cem

ent w

ires

use

co

nd

uct

ors

su

itabl

e fo

r 10

5 C

.5.

Fo

r am

pac

ities

an

d o

verc

urr

ent

pro

tect

ion

, see

un

it r

atin

g p

late

.6.

Co

nn

ect

to 2

4 va

c/40

va/c

lass

2 c

ircu

it.

See

fu

rnac

e/ai

r h

and

ler

i

nst

ruct

ion

s fo

r co

ntr

ol c

ircu

it an

d o

ptio

nal

rel

ay/tr

ansf

orm

er k

its.

7. D

O N

OT

inst

all a

Har

d S

tart

Kit

on

a m

od

el w

ith

a P

TC

R in

stal

led

.

1. C

ou

per

le c

ou

ran

t av

ant

de

fair

e le

tret

ien

.2.

Em

plo

yez

un

iqu

emen

t d

es c

on

du

cteu

rs e

n c

uiv

re.

3. N

e co

nvie

nt

pas

au

x in

stal

lati

on

s d

e p

lus

de

1

50 v

olt

a la

ter

re.

Sin

gle

Ph

ase

OP

TIO

NA

L H

AR

D S

TAR

T K

IT

Sta

rt

Cap

acit

or

25 Sta

rtR

elay

1

to T

1 o

n c

on

tact

or

to “

H”

on

cap

acit

or

to T

2 o

nco

nta

cto

r

Red

Yello

w

Bla

ck

Yello

w

CC

- C

onta

ctor

Coi

lC

CH

- C

rank

case

Hea

ter (

If E

quip

ped)

DFT

- D

efro

st T

herm

osta

tLL

S -

Liqu

id L

ine

Sol

enoi

d (If

Equ

ippe

d)R

VS

- R

ever

sing

Val

ve S

olen

oid

OD

T - O

utdo

or T

herm

osta

t (If

Equ

ippe

d)LP

S -

Low

Pre

ssur

e S

witc

h (If

Equ

ippe

d)

1 2 3 4

Clo

sing

dur

ing

defr

ost.

Rat

ing:

1 A

mp.

Max

.O

pens

dur

ing

defr

ost.

Rat

ing:

2 H

P a

t 230

Vac

Max

.C

lose

d w

hen

"Y"

is o

n. O

pen

whe

n "Y

" is

off.

Pro

vide

s "o

ff" d

elay

tim

e of

5 m

in. w

hen

"Y"

open

s.W

ith D

FT c

lose

d an

d "Y

" cl

osed

, com

pres

sor r

un ti

me

is a

ccum

ulat

ed.

Ope

ning

of D

FT d

urin

g de

fros

t or i

nter

val p

erio

d re

sets

the

inte

rval

to 0

.

Def

rost

Boa

rd O

pera

tion:

Dua

l C

apac

itor

Co

mp

ress

or

Co

nta

cts

Co

mp

ress

or

Ou

tdo

or

Fan

Mot

or

R

C

S S

C

R

L1

T1

T2

OD

T(I

F E

QU

IPP

ED

)

Low

Vol

tage

Term

inal

s

E

Def

rost

Con

trol

Boa

rd

DF

T

Co

ntr

ol

Lo

gic

CC

DF

1D

F2

DF

T

1

2

3

4

1

R W2 O Y C T2

T1

R W2 O Y C

RV

S

LLS

(IF

EQ

UIP

PE

D)

PT

CR

(If

eq

uip

ped

)

H C F

PT

CR

- P

osi

tive

Tem

per

atu

re

Co

effi

cien

t R

esis

tor

L2

CC

H

FIE

LD W

IRIN

G

LEG

EN

D:

LOW

VO

LTA

GE

HIG

H V

OLT

AG

E

WIR

ING

DIA

GR

AM

¢710889\¤

Figure 4. Wiring Diagram for single Phase heat Pumps

23

1. C

ou

per

le c

ou

ran

t av

ant

de

fair

e le

tret

ien

.2.

Em

plo

yez

un

iqu

emen

t d

es c

on

du

cteu

rs e

n c

uiv

re.

7108

660

(Rep

lace

s 71

0448

0)M

MY

Y

FIE

LD W

IRIN

G

LEG

EN

D:

LOW

VO

LTA

GE

HIG

H V

OLT

AG

E

WIR

ING

DIA

GR

AM

Sp

lit S

yste

m H

eat

Pu

mp

(O

utd

oo

r S

ecti

on

) N

OT

ES

:1.

Dis

con

nec

t al

l po

wer

bef

ore

ser

vici

ng

.2.

Fo

r su

pp

ly c

on

nec

tio

ns

use

co

pp

er c

on

du

cto

rs o

nly

.3.

Fo

r re

pla

cem

ent

wir

es u

se c

on

du

cto

rs s

uit

able

for

105

C.

4. F

or

sup

ply

wir

e am

pac

itie

s an

d o

verc

urr

ent

pro

tect

ion

, see

un

it r

atin

g p

late

.5.

Co

nn

ect

to 2

4 va

c/40

va/c

lass

2 c

ircu

it.

See

fu

rnac

e/ai

r h

and

ler

inst

alla

tio

n

inst

ruct

ion

s fo

r co

ntr

ol c

ircu

it a

nd

op

tio

nal

rel

ay/t

ran

sfo

rmer

kit

s.6.

A ju

mp

er w

ire

is p

rovi

ded

if H

PS

is n

ot

pro

vid

ed.

380

/ 420

V -

Th

ree

Ph

ase

- 50

Hz

¢710866@¤

T1

T2

L1L2

T3

L3

T3 T1

T2

C

S R

EDFTRRW2OOYCT2T1

DF1

DF2

L1L2

L3N

GN

DT

HR

EE

PH

AS

E F

IELD

SU

PP

LY

DEFROST CONTROL BOARD

RE

VE

RS

ING

VA

LVE

SO

LEN

OID

DE

FR

OS

TS

EN

SO

R

OU

TD

OO

RFA

N M

OTO

R

CO

MP

RE

SS

OR

CO

NTA

CTO

R

GR

OU

ND

ING

LUG

TE

RM

INA

LB

LOC

K(3

80/4

20V

UN

ITS

ON

LY)

CA

PAC

ITO

R

CC

H

HP

S

YE

LLO

W/B

LAC

K

YE

LLO

W/B

LAC

K

BLA

CK

BLA

CK

RE

D

RE

D

BLA

CK

BLA

CK

BLU

E

OR

AN

GE

RE

D

YE

LLO

W

SE

LEC

T M

OD

ELS

S

EE

NO

TE

6

DF

T -

Def

rost

The

rmos

tat

RV

S -

Rev

ersi

ng V

alve

Sol

enoi

dC

C

- C

onta

ctor

coi

lC

CH

- C

rank

case

Hea

ter

(if e

quip

ped)

OD

T -

Out

door

The

rmos

tat

(

sele

ct m

odel

s on

ly)

HP

S -

Hig

h P

ress

ure

Sw

itch

(

sele

ct m

odel

s on

ly)

Wit

h D

FT

clo

sed

an

d “

Y”

clo

sed

, co

mp

ress

or

run

ti

me

is a

ccu

mu

late

d. O

pen

ing

o

f D

FT

du

rin

g d

efro

st o

rin

terv

al p

erio

d r

eset

s th

e in

terv

al t

o 0

.

Clo

ses

du

rin

g d

efro

st.

Rat

ing

: 1 A

mp

. Max

.O

pen

s d

uri

ng

def

rost

.R

atin

g: 2

HP.

at

230

Vac

Max

.C

lose

d w

hen

“Y

” is

on

.O

pen

wh

en “

Y”

is o

ff.

Pro

vid

es o

ff d

elay

tim

eo

f 5

min

. wh

en “

Y”

op

ens.

1 32

5G

rou

nd

on

loca

tio

n p

rovi

ded

in

sid

e co

mp

ress

or

term

inal

box

.

4

L1

L2

L3

N

1

2

1

4

3

C

R

S

Co

mp

ress

or

Mo

tor

T1

T2

RV

S

R CYW2

OED

FT

R W2 O Y C T2

T1

DF

T

CO

NT

RO

LL

OG

IC

DF

2D

F1

CC

Cap

acit

or

T3T2

T1

CC

H (

If E

qu

ipp

ed)

Ou

tdo

or

Fan

Mo

tor

T3

Def

rost

Co

ntr

ol B

oar

d

Lo

w V

olt

age

Term

inal

s

Def

rost

Bo

ard

Op

erat

ion

:

5 HP

S

Figure 5. Wiring Diagram for three Phase heat Pumps

InstallatIon / PErForMancE chEcK lIst

rEFrIgEratIon sYstEM

Wasunitgiven24hrwarmupperiodfor crankcase heaters?

YES NO

Stage-1 Liquid Pressure (high side) _______________________

Stage-1 Suction Pressure (low side) _______________________

Has the owner’s information been reviewed with the customer?

YES NO

Has the Literature Package been left with the unit?

YES NO

ElEctrIcal sYstEM

Electrical connections tight? YES NO

Line voltage polarity correct? YES NO

Rated Voltage: ___________________________________ VOLTS

L1-L2 Volts: _____________________________________ VOLTS

L1-L3 Volts: _____________________________________ VOLTS

L2-L3 Volts: _____________________________________ VOLTS

Avg. Volts: ______________________________________ VOLTS

Max. deviation of voltagefrom avg. volts: ___________________________________ VOLTS

% Volt imbalance: ________________________________ VOLTS

Blower Motor HP: ________ Sheave Setting ___________# Turns

Has the thermostat been calibrated? YES NO

Is the thermostat level? YES NO

Is the heat anticipator setting correct? (If Applicable)

YES NO

Specifications & illustrations subject to change without notice or incurring obligations.O' Fallon MO | Printed in U.S.A. (02/12)

InstallatIon aDDrEss:

CITY ________________________ STATE ________________

UNIT MODEL # ________________________________________

UNIT SERIAL # _______________________________________

Unit Installed Minimum clearances per Figure 1 (page 3)?

YES NO

InstallEr naME:

CITY _______________________ STATE ________________

708479b (Replaces 708479A)

Documents

InstallatIon InstructIons - Nortek Global HVACenora.nortekhvac.com/literature/708479b.pdfInstallatIon InstructIons Do not DEstroY. PlEasE rEaD carEFullY anD KEEP In a saFE PlacE For