Nordyne JT5BD, JT5BD-018K, JT5BD-024KA, JT5BD-030KA, JT5BD-036K Installation Manual

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Page 1

JT5BD Series

USER’S MANUAL / INSTALLATION INSTRUCTIONS

SPLIT SYSTEM HEAT PUMP - R-22

13 SEER

Please read this information thoroughly and become familiar with the capabilities and use of your appliance before attempting to operate or maintain this unit. Keep this literature where you have easy access to it in the future. If a problem occurs, check the instructions and follow recommendations given. If these suggestions don’t eliminate the problem, call your servicing contractor.

The Installation Instructions are primarily intended to assist qualiﬁ ed individuals experienced in the proper installation of this appliance. Some local codes require licensed installation/service personnel for this type of equipment. Please read all instructions carefully before starting the installation.

DO NOT DESTROY. PLEASE READ CAREFULLY AND KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.

IMPORTANT

Page 2

USER INFORMATION

Important Safety Information ....................................3

About the Heat Pump .................................................3

Operating Instructions ...............................................3

Cooling Operation .....................................................3

Heating Operation .....................................................3

Emergency Heat........................................................3

Defrost Operation ......................................................3

Operating the Heat Pump for Automatic

Cooling & Heating .....................................................4

Operating the Indoor Blower Continuously ................4

Turning the Heat Pump Off ........................................4

Heat Pump Maintenance ............................................4

Regular Cleaning.......................................................4

Troubleshooting ..........................................................4

INSTALLER INFORMATION

Important Safety Information ....................................5

Heat Pump Installation ...............................................6

General Information ...................................................6

Before You Install this Unit .........................................6

Locating the Heat Pump ............................................6

Packaging Removal ...................................................6

Ground Level .............................................................6

Connecting Refrigerant Tubing between the

Indoor & Outdoor Unit ...............................................7

Electrical Wiring ..........................................................7

Pre - Electrical Checklist ...........................................7

Line Voltage ...............................................................7

Grounding..................................................................8

Thermostat Connections ...........................................8

Startup & Adjustments ..............................................9

Pre - Start Checklist ..................................................9

Start-up Procedures ..................................................9

Air Circulation - Indoor Blower ...............................9

System Cooling ......................................................9

System Heating ......................................................9

Refrigerant Charging ..................................................9

Charging R-22 Units in AC Mode with

Outdoor Temperatures Above 55° F ........................10

Heat Pump Maintenance ..........................................10

Replacement Parts ...................................................10

WARRANTY INFORMATION

A warranty certiﬁ cate with full details is included with the Heat Pump. Carefully review these responsibilities with your dealer or service company. The manufacturer will not be responsible for any costs found necessary to correct problems due to improper setup, improper installation, adjustments, improper operating procedure on the part of the user, etc. Some speciﬁ c examples of service calls which are not included in the limited warranty are:

• Correcting wiring problems in the electrical circuit supplying the Heat Pump.

• Resetting circuit breakers or other switches.

• Adjusting or calibrating of thermostat.

Figures & Tables .......................................................11

Figure 5. Unit Dimensions ...................................11

Refrigerant Charging Charts ...................................11

Figure 6. JT5BD-018K (1.5 Ton Units) ................11

Figure 7. JT5BD-024KA (2 Ton Units) .................12

Figure 8. JT5BD-030KA (2.5 Ton Units) ..............12

Figure 9. JT5BD-036K (3 Ton Units) ...................13

Figure 10. JT5BD-042K (3.5 Ton Units) ..............13

Figure 11. JT5BD-048K (4 Ton Units) .................14

Figure 12. JT5BD-060K (5 Ton Units) .................14

Refrigerant Charging Tables - Cooling Mode ..........15

Table 4. JT5BD-018K (1.5 Ton Units) ..................15

Table 5. JT5BD-024KA (2 Ton Units) ...................15

Table 6. JT5BD-030KA (2.5 Ton Units) ................16

Table 7. JT5BD-036K (3 Ton Units) .....................16

Table 8. JT5BD-042K (3.5 Ton Units) ..................17

Table 9. JT5BD-048K (4 Ton Units) .....................17

Table 10. JT5BD-060K (5 Ton Units) ...................18

Refrigerant Charging Tables - Heating Mode ..........19

Table 11. JT5BD-018K (1.5 Ton Units) ................19

Table 12. JT5BD-024KA (2 Ton Units) .................19

Table 13. JT5BD-030KA (2.5 Ton Units) ..............20

Table 14. JT5BD-036K (3 Ton Units) ...................20

Table 15. JT5BD-042K (3.5 Ton Units) ................21

Table 16. JT5BD-048K (4 Ton Units) ...................21

Table 17. JT5BD-060K (5 Ton Units) ...................22

Electrical Information ...............................................23

Figure 12. JT5BD Wiring Diagram .......................23

Table 18. Electrical Specs & Physical Data ..........24

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USER INFORMATION

IMPORTANT SAFETY INFORMATION

Safety markings are used frequently throughout this manual to designate a degree or level of seriousness and should not be ignored. WARNING indicates a potentially hazardous situation that if not avoided, could result in personal injury or death. CAUTION indicates a potentially hazardous situation that if not avoided, may result in minor or moderate injury or property damage.

ABOUT THE HEAT PUMP

Your heat pump is a unique, all weather comfort-control appliance that will heat and cool your home year round and provide energy saving comfort. It’s an unknown fact that heat is always in the air, even when the outside temperature is below freezing. The heat pump uses this basic law of physics to provide energy saving heat during the winter months. For example, If the outdoor temperature is 47° F (8° C), your heat pump can deliver approximately

3.5 units of heat energy per each unit of electrical energy used, as compared to a maximum of only 1 unit of heat energy produced with conventional heating systems.

In colder temperatures, the heat pump performs like an air conditioner run in reverse. Available heat energy outside the home is absorbed by the refrigerant and exhausted inside the home. This efﬁ cient process means you only pay for “moving” the heat from the outdoors to the indoor area. You do not pay to generate the heat, as is the case with more traditional furnace designs.

During summer, the heat pump reverses the ﬂ ow of the heat-absorbing refrigerant to become an energy-efﬁ cient, central air conditioner. Excess heat energy inside the home is absorbed by the refrigerant and exhausted outside the home.

OPERATING INSTRUCTIONS

Please refer to the thermostat manufacturer’s User manual for detailed programming instructions.

Cooling Operation

1. Set the thermostat’s system mode to COOL or AUTO and change the fan mode to AUTO. See Figure 1

2. Set the temperature selector to the desired temperature level. The outdoor fan, compressor, and blower motor will all cycle on and off to maintain the indoor temperature at the desired cooling level.

NOTE: If the temperature level is re-adjusted, or the system mode is reset, the fan and compressor in the outdoor unit may not start immediately. A protective timer circuit holds the compressor and the outdoor fan off for approximately 5 minutes following a previous operation or the interruption of the main electrical power.

Heating Operation

1. Set the thermostat’s system mode to HEAT or AUTO and change the fan mode to AUTO. See Figure 1.

2. Set the temperature selector to the desired temperature level. The compressor, outdoor fan, and blower motor will cycle on and off to maintain the indoor temperature at the desired heating level.

Emergency Heat

Some thermostats may include a system mode called EM HT or AUX HT, etc. This is a back-up heating mode that should only be used if a problem is suspected. With the mode set to EM HT, etc., the compressor and outdoor fan will be locked off and supplemental heat (electric resistance heating) will be used as a source of heat. Sustained use of electric resistance heat in place of the heat pump will result in an increase in electric utility costs.

Fan

Mode

Figure 1. Digital Thermostat

System

Mode

Temperature

Selector

Defrost Operation

During cold weather heating operation, the outdoor unit will develop a coating of snow and ice on the heat transfer coil. This is normal and the unit will defrost itself. This unit monitors ambient and coil temperatures to regulate the defrost function accordingly.

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USER INFORMATION

At the beginning of the defrost cycle, both the outdoor condenser fan and compressor will turn off. After approximately 30 seconds, the compressor will turn on and begin to heat the outdoor coil causing the ice and snow to melt.

NOTE: While the ice and snow is melting, some steam may rise from the outdoor unit as the warm coil causes the melting frost to evaporate. When defrost is completed, the outdoor fan motor will start, and the compressor will turn off again. In approximately 30 seconds the compressor will start up again and continue normal operation.

Operating the Heat Pump for Automatic Cooling and Heating

1. Set the thermostat system switch to AUTO and the thermostat fan switch to AUTO. See Figure 1.

NOTE: Thermostat styles vary. Some models will not include the AUTO mode and others will have the AUTO in place of the HEAT and COOL. Others may include all three. Refer to the instructions supplied with your thermostat for speciﬁ c instructions.

2. Set the thermostat temperature to the desired temperature level. The outdoor unit and the indoor blower will then cycle on and off in either the heating or cooling mode of operation as required to automatically maintain the indoor temperature within the desired limits.

Operating the Indoor Blower Continuously

The continuous indoor blower operation is typically used to circulate the indoor air to equalize a temperature unbalance due to a sun load, cooking, or ﬁ replace operation.

Set the thermostat fan mode to ON (Figure 1). The indoor blower starts immediately, and will run continually until the fan mode is reset to AUTO.

The continuous indoor blower operation can be obtained with the thermostat system mode set in any position, including OFF.

HEAT PUMP MAINTENANCE

CAUTION:

Shut off all electrical power to the unit before performing any maintenance. Failure to comply may result in personal injury or death.

Proper maintenance is most important to achieve the best performance from the appliance and should be performed by a qualiﬁ ed service technician at least once a year. Read the maintenance items below and follow the instructions for years of safe, trouble free operation.

Regular Cleaning

WARNING:

Do not place combustible material on or against the unit cabinet. Do not place combustible materials, including gasoline and any other ﬂ ammable vapors and liquids, in the vicinity of the unit.

• Clean or replace the indoor air ﬁ lter at the start of each heating and cooling season, and when an accumulation of dust and dirt is visible on the air ﬁ lter.

• Remove any leaves and grass clippings from around the coil of the outdoor unit, being careful not to damage the aluminum ﬁ ns.

• Check and remove any obstructions, such as twigs, sticks, etc.

TROUBLESHOOTING

If the unit fails to operate, check the following:

• The thermostat is properly set. See Cooling Operation for air conditioning or Heating Operation for furnace.

• The unit disconnect fuses are in good condition and the electrical power to the unit is turned on.

Turning the Heat Pump Off

Change the thermostat’s system mode to OFF and the fan mode to AUTO. See Figure 1. NOTE: The system will not operate, regardless of the temperature selector setting.

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INSTALLER INFORMATION

IMPORTANT SAFETY INFORMATION

INSTALLER: 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. WARNING indicates a potentially hazardous situation that if not avoided, could result in personal injury or death. CAUTION indicates a potentially hazardous situation that if not avoided, may result in minor or moderate injury or property damage.

WARNING:

Shut off all electrical power to the unit before performing any maintenance or service on the system. Failure to comply may result in personal injury or death.

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, ﬁ re, electrical shock or other hazardous conditions which may result in personal injury or property damage

WARNING:

JT5BD Split System Heat Pumps leave the factory with a nitrogen holding charge. Follow all charging instructions for maximum unit performance and efﬁ ciency. Some local codes require licensed installation/service personnel to service this type of equipment. Refrigerant charging must be done by qualiﬁ ed 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:

This unit uses refrigerant R-22. DO NOT use any other refrigerant in this unit. Use of another refrigerant will damage the unit.

WARNING:

The information listed below must be followed during the installation, service, and operation of this unit. Unqualiﬁ ed individuals should not attempt to interpret these instructions or install this equipment. Failure to follow safety recommendations could result in possible damage to the equipment, serious per

injury or death

• The installer must comply with all local codes and regulations which govern the installation of this type of equipment. Local codes and regulations take precedence over any recommendations contained in these instructions. Consult local building codes and the National Electrical Code (ANSI CI) for special installation requirements.

• All electrical wiring must be completed in accordance with 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.

• This equipment contains liquid and gaseous refrigerant under high pressure. DO NOT USE ANY PORTION OF THE CHARGE FOR PURGING OR LEAK TESTING. Installation or servicing should only be performed by qualiﬁ ed trained personnel thoroughly familiar with this type equipment.

• Fully annealed, refrigerant grade copper tubing should be used when installing the system. Refrigerant suction line tubing should be fully insulated.

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

• This unit is designed for outdoor installations only and should be located as descibed on page 6.

• Follow all precautions in the literature, on tags, and on labels provided with the equipment. Read and thoroughly understand the instructions provided with the equipment prior to performing the installation and operational checkout of the equipment.

sonal

Page 6

HEAT PUMP INSTALLATION

General Information

The JT5BD series Heat Pump is designed only for outdoor rooftop or ground level installations. This unit has been tested for capacity and efﬁ ciency in accordance with A.H.R.I. Standards and will provide many years of safe and dependable comfort, providing it is properly installed and maintained. Abuse, improper use, and/or improper maintenance can shorten the life of the appliance and create unsafe hazards.

To achieve optimum performance and minimize equipment failure, it is recommended that periodic maintenance be performed on this unit. The ability to properly perform maintenance on this equipment requires certain mechanical skills and tools.

Before You Install this 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 ﬁ ns are straight. If necessary, comb ﬁ ns to remove ﬂ attened or bent ﬁ ns. Claims for damage (apparent or concealed) should be ﬁ led 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 Heat Pump

• Survey the job site to determine the best location for mounting the outdoor unit. See Figure 5 (page 11) for unit dimensions.

• Overhead obstructions, poorly ventilated areas, and areas subject to accumulation of debris should be avoided.

• Sufﬁ cient clearance for unobstructed airﬂ ow through the outdoor coil must be maintained in order to achieve rated performance. See Figure 2 for minimum clearances to obstructions.

• Consideration should be given to availability of electric power, service access, noise, and shade.

Packaging Removal NOTE: To prevent damage to the tubing connections,

carefully remove the carton and user’s manual from the equipment. Discard the shipping carton.

Ground Level

Ground level installations must be located according to local building codes or ordinances and these requirements:

• Clearances must be in accordance with those shown in Figure 2.

• A suitable mounting pad (Figure 3) must be provided and separate from the building foundation. The pad must be level and strong enough to support the weight of the unit. The slab height must be a minimum of 2” (5 cm) above grade and with adequate drainage.

DO NOT

18"

OBSTRUCT

TOP OF UNIT

Figure 2. Clearance Requirements

2”

Figure 3. Ground Level Installation

18"

Page 7

Connecting Refrigerant Tubing Between the Indoor & Outdoor Unit

CAUTION:

This system uses R-22 refrigerant with POE oil. 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.

• To maintain the unit's warranty, it is required that a ﬁ lter drier be installed when the system is open to the atmosphere. This includes, but is not limited to, replacing the evaporator and/or condenser of a system. The ﬁ lter drier must be installed in strict accordance with the manufacturer’s installation instructions.

• Optional equipment such as liquid line solenoid valves, low ambient, etc., should be installed in strict accordance with the manufacturer’s installation instructions.

ELECTRICAL WIRING

• When connecting refrigerant linesets together, it is recommended that dry nitrogen be ﬂ owing through the joints during brazing to prevent internal oxidation and scaling.

• Refrigerant tubing should be routed in a manner that minimizes the length of tubing and the number of bends in the tubing. If precise forming of refrigerant lines is required, a copper tubing bender is recommended. Avoid sharp bends and contact of the refrigerant lines with metal surfaces.

• Refrigerant tubing should be supported in a manner that the tubing will not vibrate or abrade during system operation.

• Tubing should be kept clean of foreign debris during installation.

• Every effort should be made by the installer to ensure that the ﬁ eld 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 interconnecting refrigerant line lengths is 75 ft. and the vertical elevation difference between the indoor and outdoor sections should not exceed 20 ft.

COPPER WIRE SIZE — AWG

(1% Voltage Drop)

Supply Wire Length-Feet

200 150 100 50

6 8 10 14 15 46812 20 46810 25 44610 30 3468 35 3468 40 2346 45 2346 50 2346 55 1234 60

Wire Size based on N.E.C. for 60° type copper conductors.

Table 1. Copper Wire Size

Supply Circuit

Ampacity

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.

• All electrical connections must be in compliance with all applicable local codes and ordinances, and with the current revision of the National Electric Code (ANSI/NFPA 70).

• For Canadian installations the electrical connections and 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 speciﬁ cations on the unit rating plate. See Table 18 (page 24).

 Verify that the service provided by the utility is sufﬁ cient

to handle the additional load imposed by this equipment. Refer to the unit wiring label for proper voltage wiring.

 Verify factory wiring is in accordance with the unit

wiring diagram or Figure 13 (page 23). Inspect for loose connections.

Line Voltage

• A wiring diagram is located on the inside cover of the 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 switch shall be capable of electrically de-energizing the outdoor unit.

• Line voltage to the unit should be supplied from a dedicated branch circuit containing the correct fuse or circuit breaker for the unit. Incoming ﬁ eld wiring and minimum size of electrical conductors and circuit

Page 8

Thermostat

GRW2CEOY

NOTE: Jumper between W2 and E is required when no OD T-Stat is used.

For 2-Stage Heater Kits

Green

Red

Brown

Orange

Black

Air Handler Heat Pump OD

Section

Typical Heat Pump with Standard Air Handler

Thermostat

GRW2CEOY

Red

Green

White

Black

O Y

protection must be in compliance with information listed on the outdoor unit data label. Any other wiring methods must be acceptable to authority having jurisdiction.

• The outdoor unit requires both power and control circuit electrical connections. Refer to the wiring diagram / schematic for identiﬁ cation and location of outdoor unit ﬁ eld wiring interfaces Figure 13 (page 23). Make all electrical connections in accordance with all applicable

codes and ordinances.

• Overcurrent protection must be provided at the branch circuit distribution panel and sized as shown on the unit rating label and according to applicable local codes. See the unit rating plate for minimum circuit ampacity and maximum overcurrent protection limits.

• Provide power supply for the unit in accordance with the unit wiring diagram, and the unit rating plate. Connect the line-voltage leads to the terminals on the contactor inside the control compartment.

• Use only copper wire for the line voltage power supply to this unit as listed in Table 1. 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.

• 208/230 Volt units are shipped from the factory wired for 230 volt operation. For 208V operation, remove the lead from the transformer terminal marked 240V and connect it to the terminal marked 208V.

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

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

Air Handler Heat Pump OD

Typical Heat Pump with

Outdoor Thermostat and Air Handler

Figure 4. Typical Thermostat Connections

Section

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.

Thermostat Connections

• Thermostat connections should be made in accordance with the instructions supplied with the thermostat and the indoor equipment.

• The outdoor unit is designed to operate from a 24 VAC Class 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.

• The low voltage wires must be properly connected to the units low voltage terminal block (Figure 4).

Page 9

Recommended wire gauge and wire lengths for typical thermostat connections are listed in Table 2.

• The thermostat should be mounted about 5 feet above the ﬂ oor 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 ﬁ replaces, sunlight, or lighting ﬁ xtures, and convective heat from warm air registers or electrical appliances. Refer to the thermostat manufacturer’s instruction sheet for detailed mounting and installation information.

Recommended T-Stat Wire

Thermostat

Wire Gauge

24 55 25

22 90 45

20 140 70

18 225 110

Table 2. Thermostat Wire Gauge

Unit to T-Stat (Length in FT)

2-Wire

(Heating)

5-Wire

(Heating/Cooling)

START UP & ADJUSTMENTS

Pre-Start Check List

 Verify the indoor unit is level and allows proper

condensate drainage.

 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 air ﬁ lters are cleaned and properly installed.  Verify duct work is sealed to prevent air leakage.  Verify line voltage power leads are securely connected

and the unit is properly grounded.

 Verify low voltage wires are securely connected to the

correct leads on the low voltage terminal strip.

 Verify power supply branch circuit overcurrent protection

is sized properly.

 Verify the thermostat is wired correctly.

Start-Up Procedures

The thermostat's function mode should be set to OFF and the fan mode should be set to AUTO. Close all electrical disconnects to energize the system.

Air Circulation - Indoor Blower

1. 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 insufﬁ cient air is detected, examine ductwork for leaks or obstructions.

3. Set the thermostat fan mode to AUTO and verify the

blower stops running.

System Cooling

1. Set the thermostat’s system mode to COOL and the fan mode to AUTO. Gradually lower the thermostat temperature setpoint below room temperature and verify the outdoor unit and indoor blower energize.

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.

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 mode is set to the ON position.

System Heating (optional)

1. Set the thermostat's system mode to HEAT and the temperature mode above room temperature.

2. Verify the optional heating equipment (furnace or electric heat) and indoor blower energize. Feel the 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.

Refrigerant Charging

WARNING:

JT5BD Split System Heat Pumps leave the factory with a nitrogen holding charge. DO NOT operate any unit while it contains a Nitrogen holding charge. Doing so may damage the units compressor. Follow these charging instructions for maximum unit performance and efﬁ ciency. Some local codes require licensed installation/ service personnel to service this type of equipment. Refrigerant charging must be done by qualiﬁ ed 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.

To properly charge these units:

1. Read all Installation Instructions ﬁ rst.

2. Complete any brazing operations. (e.g. Split system line-sets)

3. Leak check and evacuate the whole system using proper methods.

4. Purge the nitrogen holding charge.

5. Evacuate the unit to 350-500 microns.

Page 10

6. Allow the unit to remain under vacuum for at least 30 min.

7. Weigh-In the proper amount of new (or reclaimed) R-22 refrigerant. Refer to Table 3 or the units rating label to determine the correct amount of charge.

• Refrigerant charging charts are applicable only to

matched assemblies of NORDYNE equipment and listed airﬂ ows for the indoor coil. Refer to Figures 6 12 (pages 11 - 14) and Tables 4 - 10 (pages 15 - 18) for correct system charging.

• JT5BD outdoor units with indoor coils not listed are

not recommended. Deviations from rated airﬂ ows or non-listed combinations may require modiﬁ cation to the expansion device and refrigerant charging procedures for proper and efﬁ cient system operation.

• The refrigerant charge can be checked and adjusted

through 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.

Charging an R-22 system in AC mode at outdoor temperatures above 55° F for optimized sub-cooling of 10° F - 12° F.

1. With the system operating at 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. Deter mine the required liquid refrigerant pressure. Refer to Tables 11 - 17 (pages 19 - 22) for correct system charging.

• If the pressure measured in Step 1 is greater than 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.

• If the pressure measured in Step 1 is less than the required 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.

Restrictor Bore Size

Model

Number

JT5BD-

(inches)

Indoor Outdoor

System Charge R2 (oz.)

018K 0.053 0.041 93 024KA 0.061 0.047 96 030KA 0.069 0.049 144

036K 0.078 0.057 155

042K 0.083 0.059 248

048K 0.090 0.065 248

060K 0.101 0.071 268

HEAT PUMP 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:

• Inspect and clean or replace air ﬁ lters at the beginning of each heating and cooling season, or more frequently if required.

• Inspect the condensate drain and outdoor coil at the beginning of each cooling season. Remove any debris. Clean the outdoor coil and louvers as necessary using a mild detergent and water. Rinse thoroughly with water.

• Inspect the electrical connections for tightness at the beginning of each heating and cooling season. Service as necessary.

CAUTION:

The unit should never be operated without a ﬁ lter in the return air system. Replace disposable ﬁ lters with the same type and size.

• Do not attempt to add additional oil to motors unequipped with oil tubes. The compressor is hermetically sealed at the factory and does not require lubrication.

REPLACEMENT PARTS

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

ELECTRICAL:

Capacitors Temperature Limit Switches

Compressors Thermostats

Contactors Time Delay Relays

Pressure Switches Transformers

Relays

MOTORS:

Blower Motor Fan Motor

COMPONENTS:

Blower Assembly Fan Grille

Cabinet Panels Filter/Driers

Expansion Valves

distributors.

Table 3.

13 SEER Split System Heat Pump Oriﬁ ce

Page 11

FIGURES & TABLES

DO NOT OBSTRUCT TOP OF UNIT

Allow adequate clearance for airflow

Model Number JT5BD- Height -H- Width -W- Depth -D-

018K 27" 30 3/4" 30 3/4"

024KA 27" 30 3/4" 30 3/4"

030KA 39" 30 3/4" 30 3/4"

036K 43" 30 3/4" 30 3/4"

042K 39" 30 3/4" 30 3/4"

048K 43" 30 3/4" 30 3/4"

060K 43" 30 3/4" 30 3/4"

Figure 5. Unit Dimensions

REFFRIGERANT CHARGING CHARTS

JT5BD-018K Charging Chart

375

350

Remove refrigerant when above curve

325

300

275

250

225

200

Liquid Pressure (psig)

175

Add refrigerant when below curve

150

125

75 80 85 90 95 100 105 110 115 120 125 130

Liquid Temperature (F)

Figure 6. Charging Chart for 1.5 Ton Units

Page 12

JT5BD-024KA Charging Chart

350

325

Remove refrigerant when above curve

300

275

250

225

Liquid Pressure (psig)

200

Add refrigerant when below curve

175

150

75 80 85 90 95 100 105 110 115 120 125 130

Liquid Temperature (F)

Liquid Pressure (psig)

350

325

300

275

250

225

200

175

Figure 7. Charging Chart for 2 Ton Units

JT5BD-030KA Charging Chart

Remove refrigerant when above curve

Add refrigerant when below curve

150

75 80 85 90 95 100 105 110 115 120 125 130

Liquid Temperature (F)

Figure 8. Charging Chart for 2.5 Ton Units

Page 13

JT5BD-036K Charging Chart

350

325

Remove refrigerant when above curve

300

275

250

225

200

Liquid Pressure (psig)

175

150

75 80 85 90 95 100 105 110 115 120 125 130 135

Liquid Temperature (F)

Add refrigerant when below curve

Figure 9. Charging Chart for 3 Ton Units

JT5BD-042K Charging Chart

350

325

Remove refrigerant when above curve

300

275

250

225

200

Liquid Pressure (psig)

Add refrigerant when below curve

175

150

75 80 85 90 95 100 105 110 115 120 125 130 135

Figure 10. Charging Chart for 3.5 Ton Units

Liquid Temperature (F)

Page 14

JT5BD-048K Charging Chart

350

325

Remove refrigerant when above curve

300

275

250

225

200

Liquid Pressure (psig)

Add refrigerant when below curve

175

150

75 80 85 90 95 100 105 110 115 120 125 130 135

Liquid Temperature (F)

Liquid Temperature (psig)

350

330

310

290

270

250

230

210

190

170

Figure 11. Charging Chart for 4 Ton Units

JT5BD-060K Charging Chart

Remove refrigerant when above curve

Add refrigerant when below curve

150

75 80 85 90 95 100 105 110 115 120 125 130 135

Liquid Temperature (F)

Figure 12. Charging Chart for 5 Ton Units

Page 15

REFRIGERANT CHARGING TABLES - COOLING MODE

Shaded boxes indicate ﬂ ooded conditions.

Rated design values. The suction pressure will vary from design value if indoor air ﬂ ow, entering dry bulb,

or entering wet bulb temperatures are lower than design.

1. All pressures are listed in psig and all temperatures in ° F

2. Discharge temperatures greater than charted values indicate an undercharged system.

3. In Cooling Mode suction pressure will be lower than design value if indoor air ﬂ ow, entering dry bulb, or entering wet bulb temperatures are lower than design.

4. In Heating Mode, charge should be weighed in. It is strongly recommended to verify charge in Cooling Mode at ambient above 70°F.

OUTDOOR TEMPERATURE (° F)

Suct.

Press.

73 140 135

75 143 140 155 137

77 145 146 157 143 170 140

79 147 150 160 148 172 145 185 142

81 151 153 162 152 175 150 187 147 200 144

83 166 155 177 154 189 151 202 149 215 147

85 181 157 192 155 204 153 217 151 230 149

87 196 159 207 157 219 155 232 153 244 151

89 199 163 211 161 222 159 234 157 246 154

91 214 165 226 163 237 161 248 158

93 229 167 241 165 252 163

95 244 169 256 167

97 259 172

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.

Table 4. Charging Table for JT5BD-018K Series (1.5 Ton Units)

Liq.

Press.

Dis.

Temp.

Suct.

Press.

71 149 137

73 151 143 164 141

75 154 148 166 146 176 145

77 156 153 169 151 181 150 194 149

79 160 155 171 156 184 155 196 153 209 152

81 175 159 186 159 198 158 211 157 224 156

83 190 162 202 162 213 161 226 160 239 160

85 205 166 217 165 228 164 241 164 254 163

87 208 169 220 169 232 168 243 168 256 167

89 224 173 235 173 247 172 258 171

91 239 177 250 176 262 175

93 254 180 265 180

95 269 184

70 75 80 85 90 95 100 105

Liq.

Press.

Dis.

Temp.

Liq.

Press.

Dis.

Temp.

Table 5. Charging Table for JT5BD-024KA Series (2 Ton Units)

Liq.

Press.

OUTDOOR TEMPERATURE (° F)

Dis.

Temp.

Liq.

Press.

Dis.

Temp.

Liq.

Press.

Dis.

Temp.

Liq.

Press.

Dis.

Temp.

Liq.

Press.

Dis.

Temp.

Liq.

Press.

Dis.

Temp.

Page 16

REFRIGERANT CHARGING TABLES - COOLING MODE

Shaded boxes indicate ﬂ ooded conditions.

Rated design values. The suction pressure will vary from design value if indoor air ﬂ ow, entering dry bulb,

or entering wet bulb temperatures are lower than design.

1. All pressures are listed in psig and all temperatures in ° F

2. Discharge temperatures greater than charted values indicate an undercharged system.

3. In Cooling Mode suction pressure will be lower than design value if indoor air ﬂ ow, entering dry bulb, or entering wet bulb temperatures are lower than design.

4. In Heating Mode, charge should be weighed in. It is strongly recommended to verify charge in Cooling Mode at ambient above 70°F.

OUTDOOR TEMPERATURE (° F)

Suct.

Press.

70 143 136

72 145 141 158 139

74 147 147 160 144 173 142

76 150 152 162 149 175 147 188 145

78 153 155 165 154 177 152 190 149 202 147

80 168 157 180 156 192 154 204 152 217 150

82 183 159 195 158 207 156 219 154 232 152

84 198 161 210 160 221 158 234 156 247 154

86 202 165 213 164 225 162 236 160 249 158

88 217 168 228 166 240 164 251 162

90 232 170 243 169 255 167

92 247 173 258 171

94 261 176

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.

Table 6. Charging Table for JT5BD-030KA Series (2.5 Ton Units)

OUTDOOR TEMPERATURE (° F)

Suct.

Press.

71 148 144

73 150 149 164 147

75 152 155 166 152 179 149

77 155 158 168 157 181 154 195 152

79 159 161 171 161 183 159 197 156 210 154

81 174 164 187 163 199 161 212 158 226 156

83 190 166 202 165 214 163 228 161 241 159

85 206 168 218 167 230 165 243 163 257 161

87 209 172 221 171 233 169 245 167 259 165

89 225 174 237 173 249 171 261 169

91 240 177 252 175 264 173

93 256 180 268 178

95 271 182

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.

Table 7. Charging Table for JT5BD-036K Series (3 Ton Units)

Dis.

Temp.

Page 17

REFRIGERANT CHARGING TABLES - COOLING MODE

Shaded boxes indicate ﬂ ooded conditions.

Rated design values. The suction pressure will vary from design value if indoor air ﬂ ow, entering dry bulb,

or entering wet bulb temperatures are lower than design.

1. All pressures are listed in psig and all temperatures in ° F

2. Discharge temperatures greater than charted values indicate an undercharged system.

3. In Cooling Mode suction pressure will be lower than design value if indoor air ﬂ ow, entering dry bulb, or entering wet bulb temperatures are lower than design.

4. In Heating Mode, charge should be weighed in. It is strongly recommended to verify charge in Cooling Mode at ambient above 70°F.

OUTDOOR TEMPERATURE (° F)

Suct.

Press.

71 144 150

73 146 155 159 152

75 148 161 161 157 175 153

77 152 163 164 162 177 158 191 154

79 155 165 167 164 179 163 193 159 206 156

81 171 167 183 166 195 164 208 160 222 157

83 186 169 198 167 210 165 224 162 237 159

85 202 171 214 169 226 166 239 163 253 160

87 205 174 217 172 229 170 241 167 255 164

89 221 176 233 174 245 171 257 168

91 236 178 248 175 260 172

93 252 180 264 177

95 267 181

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.

Table 8. Charging Table for JT5BD-042K Series (3.5 Ton Units)

OUTDOOR TEMPERATURE (° F)

Suct.

Press.

69 132 130

71 134 136 149 135

73 136 141 151 140 166 140

75 137 149 153 145 168 145 183 145

77 140 152 154 152 170 150 185 149 200 149

79 158 155 172 155 188 154 203 153 218 153

81 176 158 190 158 205 158 220 157 235 157

83 193 162 207 162 222 162 237 161 252 161

85 197 166 211 166 225 166 239 165 254 165

87 214 170 229 170 243 170 256 169

89 232 174 246 174 260 174

91 250 178 264 178

93 267 183

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.

Table 9. Charging Table for JT5BD-048K Series (4 Ton Units)

Dis.

Temp.

Page 18

REFRIGERANT CHARGING TABLES - COOLING MODE

Shaded boxes indicate ﬂ ooded conditions.

Rated design values. The suction pressure will vary from design value if indoor air ﬂ ow, entering dry bulb,

or entering wet bulb temperatures are lower than design.

1. All pressures are listed in psig and all temperatures in ° F

2. Discharge temperatures greater than charted values indicate an undercharged system.

3. In Cooling Mode suction pressure will be lower than design value if indoor air ﬂ ow, entering dry bulb, or entering wet bulb temperatures are lower than design.

4. In Heating Mode, charge should be weighed in. It is strongly recommended to verify charge in Cooling Mode at ambient above 70°F.

OUTDOOR TEMPERATURE (° F)

Suct.

Press.

66 143 146

68 145 152 159 149

70 147 157 161 154 175 152

72 148 164 163 159 178 157 192 155

74 152 167 165 165 180 162 194 159 208 157

76 169 168 182 167 196 164 210 161 224 159

78 185 170 198 168 212 166 226 164 240 161

80 202 172 215 170 228 168 242 165 256 163

82 205 175 218 174 232 172 244 169 258 167

84 222 178 235 176 248 174 260 171

86 238 180 252 178 265 176

88 255 182 268 180

90 271 185

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.

Table 10. Charging Table for JT5BD-060K Series (5 Ton Units)

Page 19

Disch.

Temp.

Disch.

Temp.

(° F)

Liquid

Press.

Suc.

Press.

Temp.

Disch.

Liquid

Press.

Suc.

Press.

Temp.

Disch.

Liquid

Press.

Suc.

Press.

Temp.

Disch.

235 182

215 163

195 143

249 170

229 154

209 138

(° F)

Liquid

Press.

Suc.

Press.

Temp.

Disch.

Liquid

Press.

Suc.

Press.

Temp.

Disch.

Liquid

Press.

Suc.

Press.

Temp.

Disch.

214 183

198 168

183 152

228 171

212 159

197 146

REFRIGERANT CHARGING TABLES - HEATING MODE

Rated design values. Suction pressure will vary from design value if outdoor air ﬂ ow, entering dry bulb, or entering wet bulb temperatures vary.

Shaded boxes indicate ﬂ ooded conditions.

Liquid

Press.

Suc.

Press.

OUTDOOR TEMPERATURE

Temp.

Disch.

Liquid

Press.

Suc.

Press.

Temp.

Disch.

Liquid

Press.

Suc.

Press.

Temp.

Disch.

0 102030405060

Liquid

Press.

180 130

162 123

144 116

125 109

187 126

171 119

155 112

139 105

Table 11. Charging Table for JT5BD-018K Series Heat Pump (1.5 Ton Units)

Liquid

Press.

Suc.

Press.

OUTDOOR TEMPERATURE

Temp.

Disch.

Liquid

Press.

Suc.

Press.

Temp.

Disch.

Liquid

Press.

Suc.

Press.

Temp.

Disch.

0 102030405060

Liquid

Press.

173 138

160 127

147 115

134 103

180 134

169 123

Table 12. Charging Table for JT5BD-024KA Series Heat Pump (2 Ton Units)

159 111

148 99

1. All pressures are listed psig and all temperatures in °F

2. Discharge temperatures greater than charted values indicate an undercharged system.

Suc.

Press

13 111 113 23 132 120 32 152 127 41 173 134 51 181 149 61 201 172 70 221 195

14 118 111 24 138 118 33 157 125 42 176 132 52 188 146 62 208 167 71 228 188

16 132 107 26 149 114 35 167 121 44 184 128 54 202 140 64 222 158 73 242 176

18 146 103 28 161 110 37 176 117 46 191 124 56 216 135 66 236 149 75 256 164

19 153 101 29 167 108 38 181 115 47 195 122 57 223 132 67 243 145 76 263 158

Suc.

Press

12 120 107 21 135 119 29 150 131 37 165 142 46 169 158 56 184 177 66 200 196

13 127 105 22 141 117 30 155 129 38 169 140 47 176 155 57 191 172 67 207 189

15 141 101 24 153 113 32 165 125 40 176 136 49 190 149 59 205 163 69 221 177

17 155 97 26 165 109 34 174 121 42 184 132 51 204 144 61 219 154 71 235 165

18 162 95 27 171 107 35 179 119 43 187 130 52 211 141 62 226 150 72 242 159

Page 20

Disch.

Temp.

Disch.

Temp.

(° F)

Liquid

Press.

Suc.

Press.

Temp.

Disch.

Liquid

Press.

Suc.

Press.

Temp.

Disch.

Liquid

Press.

Suc.

Press.

Temp.

Disch.

244 183

225 165

205 147

258 171

239 157

219 142

(° F)

Liquid

Press.

Suc.

Press.

Temp.

Disch.

Liquid

Press.

Suc.

Press.

Temp.

Disch.

Liquid

Press.

Suc.

Press.

Temp.

Disch.

232 187

215 166

197 145

246 174

229 157

211 139

REFRIGERANT CHARGING TABLES - HEATING MODE

Rated design values. Suction pressure will vary from design value if outdoor air ﬂ ow, entering dry bulb, or entering wet bulb temperatures vary.

Shaded boxes indicate ﬂ ooded conditions.

Liquid

Press.

Suc.

Press.

OUTDOOR TEMPERATURE

Temp.

Disch.

Liquid

Press.

Suc.

Press.

Temp.

Disch.

Liquid

Press.

Suc.

Press.

Temp.

Disch.

0 102030405060

Liquid

Press.

189 134

169 125

149 115

129 106

196 130

179 121

161 111

143 102

Table 13. Charging Table for JT5BD-030KA Series Heat Pump (2.5 Ton Units)

Liquid

Press.

Suc.

Press.

OUTDOOR TEMPERATURE

Temp.

Disch.

Liquid

Press.

Suc.

Press.

Temp.

Disch.

Liquid

Press.

Suc.

Press.

Temp.

Disch.

0 102030405060

Liquid

Press.

183 132

166 126

148 121

130 116

191 128

175 122

Table 14. Charging Table for JT5BD-036K Series Heat Pump (3 Ton Units)

160 117

144 112

1. All pressures are listed psig and all temperatures in °F

2. Discharge temperatures greater than charted values indicate an undercharged system.

Suc.

Press

13 115 110 22 137 119 30 159 129 39 181 138 48 191 153 56 211 174 65 230 196

14 122 108 23 143 117 31 164 127 40 185 136 49 198 150 57 218 170 66 237 190

16 136 104 25 155 113 33 174 123 42 192 132 51 212 145 59 232 161 68 251 177

18 150 100 27 167 109 35 183 119 44 200 128 53 226 139 61 246 152 70 265 165

19 157 98 28 173 107 36 188 117 45 203 126 54 233 136 62 253 148 71 272 159

Suc.

Press

13 116 120 22 136 125 31 156 130 40 176 136 49 183 151 59 201 175 68 218 199

14 123 118 23 142 123 32 161 128 41 180 134 50 190 148 60 208 170 69 225 193

16 137 114 25 154 119 34 171 124 43 187 130 52 204 142 62 222 161 71 239 181

18 151 110 27 166 115 36 180 120 45 194 126 54 218 136 64 236 152 73 253 168

19 158 108 28 172 113 37 185 118 46 198 124 55 225 134 65 243 148 74 260 162

Page 21

(° F)

Temp.

Disch.

Liquid

Press.

Suc.

Press.

Temp.

Disch.

Liquid

Press.

Suc.

Press.

Temp.

Disch.

Liquid

Press.

Suc.

Press.

253 175

220 159

187 143

267 162

234 150

201 137

(° F)

Temp.

Disch.

Liquid

Press.

Suc.

Press.

Temp.

Disch.

Liquid

Press.

Suc.

Press.

Temp.

Disch.

Liquid

Press.

Suc.

Press.

227 193

208 169

189 144

241 180

222 160

203 139

REFRIGERANT CHARGING TABLES - HEATING MODE

OUTDOOR TEMPERATURE

Temp.

Disch.

Liquid

Press.

Suc.

Press.

Temp.

Disch.

Liquid

Press.

Suc.

Press.

Temp.

Disch.

Liquid

Press.

Suc.

Press.

169 132

161 126

152 120

177 128

170 122

163 116

Table 15. Charging Table for JT5BD-042K Series Heat Pump (3.5 Ton Units)

OUTDOOR TEMPERATURE

Temp.

Disch.

Liquid

Press.

Suc.

Press.

Temp.

Disch.

Liquid

Press.

Suc.

Press.

Temp.

Disch.

Liquid

Press.

Suc.

Press.

175 129

160 123

144 117

183 125

169 119

Table 16. Charging Table for JT5BD-048K Series Heat Pump (4 Ton Units)

156 113

0 102030405060

Rated design values. Suction pressure will vary from design value if outdoor air ﬂ ow, entering dry bulb, or entering wet bulb temperatures vary.

Shaded boxes indicate ﬂ ooded conditions.

1. All pressures are listed psig and all temperatures in °F

2. Discharge temperatures greater than charted values indicate an undercharged system.

Temp.

Disch.

Liquid

Press.

Suc.

Press.

23 129 118 27 140 124 31 151 130 35 162 136 44 173 149 58 206 168 72 239 187

136 116 28 146 122 32 156 128 36 166 134 45 180 146 59 213 163 73 246 18125143 114

26 150 112 30 158 118 34 165 124 38 173 130 47 194 140 61 227 154 75 260 168

157 110

28 164 108 32 169 114 36 175 120 40 180 126 49 208 134 63 241 145 77 274 156

29 171 106 33 175 112 37 180 118 41 184 124 50 215 132 64 248 141 78 281 150

Temp.

Disch.

0 102030405060

Liquid

Press.

Suc.

Press

13 114 115 21 132 121 30 150 127 38 168 133 47 175 150 57 194 178 66 213 205

14 121 113 22 138 119 31 155 125 39 172 131 48 182 147 58 201 173 67 220 199

128 111

16 135 109 24 150 115 33 165 121 41 179 127 50 196 142 60 215 164 69 234 187

142 107

18 149 105 26 162 111 35 174 117 43 186 123 52 210 136 62 229 155 71 248 174

19 156 103 27 168 109 36 179 115 44 190 121 53 217 133 63 236 151 72 255 168

Page 22

(° F)

Temp.

Disch.

Liquid

Press.

Suc.

Press.

Temp.

Disch.

Liquid

Press.

Suc.

Press.

Temp.

Disch.

Liquid

Press.

Suc.

Press.

276 200

250 180

223 160

290 187

264 171

237 155

REFRIGERANT CHARGING TABLES - HEATING MODE

OUTDOOR TEMPERATURE

Temp.

Disch.

Liquid

Press.

Suc.

Press.

Temp.

Disch.

Liquid

Press.

Suc.

Press.

Temp.

Disch.

Liquid

Press.

Suc.

Press.

202 149

177 145

153 141

209 145

187 141

Table 17. Charging Table for JT5BD-060K Series Heat Pump (5 Ton Units)

165 137

0 102030405060

Rated design values. Suction pressure will vary from design value if outdoor air ﬂ ow, entering dry bulb, or entering wet bulb temperatures vary.

Shaded boxes indicate ﬂ ooded conditions.

1. All pressures are listed psig and all temperatures in °F

2. Discharge temperatures greater than charted values indicate an undercharged system.

Temp.

Disch.

Liquid

Press.

Suc.

Press

12 114 141 20 141 145 28 168 149 36 195 153 45 209 166 55 236 189 65 262 212

13 121 139 21 147 143 29 173 147 37 198 151 46 216 163 56 243 184 66 269 206

128 137

15 135 135 23 159 139 31 182 143 39 206 147 48 230 158 58 257 175 68 283 193

142 133

17 149 131 25 171 135 33 192 139 41 213 143 50 244 152 60 271 166 70 297 181

18 156 129 26 176 133 34 196 137 42 217 141 51 251 149 61 278 162 71 304 175

Page 23

Single Phase

LPS

DEFROST CONTROL BOARD

(IF EQUIPPED)

ELECTRICAL INFORMATION

BLACK

DFT

ODT (IF

EQUIPPED)

DF1 DF2

RED

BLACK

CCH

BLUE

BLACK

(IF EQUIPPED)

(IF

LLS

EQUIPPED)

04/08

7108050

L2L1

T1 T2

SINGLE PHASE

BLACK

CONTACTOR

YELLOW

LUG

GROUNDING

¢710805ª¤

FIELD SUPPLY

VALVE

SELENOID

REVERSING

Red

Yellow

Start

Relay

to “H” on capacitor

Black

to T2 on

1. Couper le courant avant de faire letretien.

2. Employez uniquement des conducteurs en cuivre.

3. Ne convient pas aux installations de plus de

150 volt a la terre.

OPTIONAL HARD START KIT

contactor

Contacts

Compressor

BLACK

Start

RED

Capacitor

DEFROST

THERMOSTAT

Yellow

to T1 on contactor

Compressor

YELLOW

PTCR

YELLOW

BLACK

(If equipped)

DF1

DF2

Outdoor

Fan Motor

DFT

RED

YELLOW

COMPRESSOR

BLUE

ORANGE

OUTDOOR FAN MOTOR

Legend

Factory Wiring:

Field Wiring

Low Voltage

High Voltage

CC - Contactor Coil

CCH - Crankcase Heater (If Equipped)

DFT - Defrost Thermostat

LLS - Liquid Line Solenoid (If Equipped)

RVS - Reversing Valve Solenoid

ODT - Outdoor Thermostat (If Equipped)

LPS - Low Pressure Switch (If Equipped)

Logic

Control

Defrost Control Board

RVS

LLS (IF

EQUIPPED)

Closing during defrost. Rating: 1 Amp. Max.

Opens during defrost. Rating: 2 HP at 230 Vac Max.

Defrost Board Operation:

Closed when "Y" is on. Open when "Y" is off.

Provides "off" delay time of 5 min. when "Y" opens.

With DFT closed and "Y" closed, compressor run time is accumulated.

Opening of DFT during defrost or interval period resets the interval to 0.

WIRING DIAGRAM

Split System Heat Pump (Outdoor Section)

NOTES:

1. Disconnect all power before servicing.

2. For supply connections use copper conductors only.

3. Not suitable on systems that exceed 150 volts to ground.

4. For replacement wires use conductors suitable for 105 C.

5. For ampacities and overcurrent protection, see unit rating plate.

6. Connect to 24 vac/40va/class 2 circuit. See furnace/air handler

instructions for control circuit and optional relay/transformer kits.

7. DO NOT install a Hard Start Kit on a model with a PTCR installed.

CCH

Dual Capacitor

PTCR (If equipped)

Figure 13. JT5BD Wiring Diagram

ODT

(IF EQUIPPED)

LPS

(IF EQUIPPED)

Vol ta g e

Low

Terminals

PTCR - Positive Temperature

Coefficient Resistor

Page 24

Model Number JT5BD- 018K 024KA 030KA 036K 042K 048K 060K

Volts-Cycles-Phase (1) 208/230-60-1

Electrical Data

Component Data

Refrigerant suction line: Length/O. Liquid Line: All Lengths - 3/8” O.D.

Total Amps 9.9 11.8 14.6 15.7 17.5 19.7 26.4

Delay Fuse Max. (2) 20 25 30 30 35 40 50

Min. Circuit Ampacity 12.1 14.5 18.0 19.4 21.6 24.3 32.6

Coil

Fan Motor

Fan Blade

Compressor Data

Area 15.17 15.17 22.88 25.42 22.88 25.42 25.42

Rows-FPI 1 - 18 1 - 18 1 - 20 1 - 20 2 - 16 2 - 16 2 - 16

Tube Dia 3/8” O.D.

Type PSC

Amps 0.91 0.91 1.00 1.00 1.00 1.4 1.4

HP 1/8 1/8 1/4 1/4 1/4 1/4 1/4

Dia-#

Blades

SCFM 2370 2370 3000 3000 3000 4000 4000

RLA 8.3 10.8 13.4 15.3 19.2 19.8 25.3

LRA 40.3 56 68 87 112 105 146

0-24 ft. 3/4” 3/4” 3/4” 3/4” 7/8” 7/8” 7/8”

25-39 ft. 3/4” 3/4” 3/4” 7/8” (3) 7/8” 7/8” 1-1/8” (4)

40-75 ft. 3/4” 3/4” 7/8” (3) 7/8” (3) 7/8” 1-1/8” (4) 1-1/8” (4)

24” - 3

R-22 Refrigerant charge (in ounces):

(Outdoor unit, Indoor Unit 15’ Line Set)

Approximate Weight (lbs.)

(1) Operating Voltage Range: 198v min. - 253v max. (2) HACR type circuit breakers may be used. (3) Requires 7/8" to 3/4" reducer from line to unit. (4) Requires 1 1/8" to 7/8" reducer from line to unit.

Net 166 171 190 204 252 276 285

Ship 175 180 200 215 265 290 300

Table 18. Electrical Speciﬁ cations & Physical Data

93 96 144 155 248 248 268

Speciﬁ cations & illustrations subject to change without notice or incurring obligations. O’ Fallon, MO | Printed in U.S.A. (09/10)

¢709242¤

7092420 (Replaces 708452D)