Reznor T5BP Unit Installation Manual

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T5BP SERIES 11.0 EER

USER’S MANUAL / INSTALLATION INSTRUCTIONS

R410A SPLIT SYSTEM HEAT PUMP - 3 PHASE

IMPORTANT

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

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

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

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Page 3

USER INFORMATION

Important Safety Information ....................................4

About the Heat Pump .................................................4

Operating Instructions ...............................................4

Cooling Operation .....................................................4

Heating Operation .....................................................4

Emergency Heat........................................................4

Defrost Operation ......................................................4

INSTALLER INFORMATION

Operating the Heat Pump for Automatic

Cooling and Heating ..................................................5

Operating the Indoor Blower Continuously ................5

Shutting the Heat Pump Off ......................................5

System Maintenance ..................................................5

Regular Cleaning.......................................................5

Before You Call a Technician .....................................5

Troubleshooting ..........................................................5

Warranty Information .................................................5

Important Safety Information ....................................6

Heat Pump Installation ...............................................7

Before You Install the Heat Pump ..............................7

Locating the Heat Pump ............................................7

Packaging Removal ...................................................7

Rigging and Hoisting .................................................7

Rooftop ......................................................................7

Ground Level .............................................................8

Connecting Refrigerant Tubing Between the

Indoor & Outdoor Unit ...............................................8

Electrical Wiring ..........................................................9

Pre - Electrical Checklist ...........................................9

Line Voltage ...............................................................9

Grounding..................................................................9

Unbalanced 3-Phase Supply Voltage ......................10

Thermostat Connections .........................................10

Defrost Cycle Timer .................................................10

Defrost Control Board..............................................11

Operational Information........................................11

Normal Defrost Procedure ...................................11

Defrost Test Procedure ........................................11

Optional Electric Heater Kits ...................................11

Startup & Adjustments ............................................12

Pre - Start Checklist ................................................12

Start-up Procedure ..................................................12

Air Circulation - Indoor Blower .............................12

Short Cycle Protection .........................................12

System Cooling ....................................................12

System Heating ....................................................12

Refrigerant Charging ............................................... 12

Charging R410A Units in AC Mode with

Outdoor Temperatures Above 55° F ..................... 13

Heat Pump Maintenance .......................................... 13

Replacement Parts ................................................... 13

Component Functions .............................................14

Figures & Tables ....................................................... 14

Figure 5. T5BP Heat Pump Dimensions .............. 14

Table 3. Unit Dimensions & Shipping Weights ..... 14

Electrical Information ............................................... 15

Table 4. Electrical Specs & Physical Data ............15

Figure 6. T5BP Wiring Diagram ............................ 16

Figure 7. Heat Pump Thermostat Connections .... 17

Cooling Charging Charts ......................................... 18

Figure 8. Charging Chart for 7.5 Ton Units ........... 19

Figure 9. Charging Chart for 10 Ton Units ............ 19

Heat Mode Veriﬁ cation Charts ................................. 20

Figure 10. Veriﬁ cation Chart for 7.5 Ton Units ...... 21

Figure 11. Veriﬁ cation Chart for 10 Ton Units ....... 21

Installation Performance Checklist ......................... 20

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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.

Defrost Operation

During cold weather heating operation, the outdoor unit

Fan

Mode

Figure 1. Digital Thermostat

System

Mode

Temperature

Selector

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.

Shutting the Heat Pump Off

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

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.

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.

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INSTALLER INFORMATION

IMPORTANT SAFETY INFORMATION

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:

T5BP Split System Heat Pumps leave the factory with a 90 oz. (5.63 Lbs.) R410A refrigerant 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-410A. 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 7.

• 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

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HEAT PUMP INSTALLATION

General Information

The T5BP 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.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 the Heat Pump

 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.

• 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.

TOP OF UNIT

18"

TO BE

UNOBSTRUCTED

18"

Figure 2. Clearance Requirements

Packaging Removal

Locate and remove all screws securing the unit to the shipping skid. NOTE: To prevent damage to the tubing connections, carefully remove the carton and user’s manual from the equipment. Discard the shipping carton.

Rigging and Hoisting

WARNING:

To avoid the risk of property damage, personal injury, or death, it is the rigger’s responsibility to ensure that whatever means are used to hoist the unit are safe and adequate:

• The lifting equipment must be adequate for the

load. Refer to Table 3 (page 14) for unit weights.

• The unit must be lifted from the holes in the

base rails using cables or chains.

• Spreader bars are required to protect the unit

and ensure even loading.

• Keep the unit in an upright position at all times.

• All panels must be securely in place during

rigging and hoisting.

Rooftop

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

• Units may be installed on Class A, B, or C roof covering material. The roof must be capable of handling the weight of the unit. For unit weights, see Table 3. Reinforce the roof if necessary.

• Secure optional mounting pad or frame to roof using acceptable mechanical methods per local codes.

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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 (page 7).

• A suitable mounting pad (Figure 3) 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.

Connecting Refrigerant Tubing Between the Indoor & Outdoor Unit

CAUTION:

This system uses R-410A 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.

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

• Refrigerant tubing should be routed in a manner that minimizes the length of tubing and the number of bends in the tubing.

• 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 are listed in Table 4 (page 15). The vertical elevation difference between the indoor and outdoor sections should not exceed 20 feet.

• 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.

• A ﬁ lter dryer is provided with the unit and must be installed in the liquid line of the system. If the installation replaces a system with a ﬁ lter dryer already present in the liquid line, the ﬁ lter dryer must be replaced with the one supplied with the unit. The ﬁ lter dryer 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.

2”

Figure 3. Ground Level Installation

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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

• 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. Refer to Table 4 (page 15).

 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 high and low voltage wiring.

 Verify factory wiring is in accordance with the unit

wiring diagram (Figure 6, page 16). Inspect for loose connections.

 Phase balance on 3 phase units must always be

checked. See Unbalanced 3-Phase Supply Voltage section (page 10).

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 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 (Figures 6 & 7) for identiﬁ cation and location of outdoor unit ﬁ eld wiring interfaces. 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

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.

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

Page 10

Unbalanced 3-Phase Supply Voltage

Voltage unbalance occurs when the voltages of all phases of a 3-phase power supply are no longer equal. This unbalance reduces motor efﬁ ciency 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:

1. Measure the line voltages of your 3-phase

Example:

power supply where it enters the building and at a location that will only be dedicated to the unit installation (at the

AB = 451V BC = 460V AC = 453V

units circuit protection or disconnect).

2. Determine the average voltage in the power supply.

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).

3. Determine the maximum deviation:

Thermostat Connections

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

• Single stage or two-stage thermostats can be used with this equipment depending on optional accessories (i.e. economizer) installed with the unit. Select a thermostat that operates in conjunction with the installed accessories. A typical commercial installation with a heat pump thermostat and air handler (with & without an economizer) is shown in Figure 7 (page 17).

• 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. 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.

Example:

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

460 - 454 = 6

Highest Value

454 - 451 = 3 454 - 453 = 1

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

% Voltage Imbalance

=100x

Example:

100

= 1.32%

454

max voltage deviation from average voltage

average voltage

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%.

Recommended T-Stat Wire

Thermostat Wire Gauge

Length (Unit to T-Stat)

2-Wire

(Heating)

(Heating/Cooling)

5-Wire

24 55 25

22 90 45

20 140 70

18 225 110

Table 2. Thermostat Wire Gauge

Defrost Cycle Timer

The 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 low voltage side of the control box. Three interval settings are available: 30 minutes, 60 minutes, and 90 minutes. Time setting selection is dependent on the climate where the unit is being installed.

• Example 1: Dry climate of Southern Arizona - A 90 minute setting is recommended.

• Example 2: Moist climate of Seattle, Washington - A 30 minute setting is recommended.

Page 11

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.

Defrost Control Board

Operational Information

• Terminals R - C must have 24V present between them for the time delay and defrost sequences to be operational.

• Jumping the T2 - DFT test pins will communicate to the board that the defrost thermostat is closed (if the compressor is running). The defrost T-stat 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 30/60/90 minutes 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.

• Jumping the TEST terminal to the C (common) terminal (while the compressor is in heat mode) will over-ride the defrost board and initiate a faster defrost test in 5, 10 or 15 seconds as determined by the 30, 60 or 90 minute defrost pin settings (factory setting is 30 minutes).

- This also bypasses the compressor off delay when

the unit goes into defrost test. If unit is kept in defrost test, the delay will be bypassed when the test is terminated by the processor.

on the Test to common pins permanently, the defrost cycle will be inoperable.

Defrost Test Procedure

1. Jumper T2 to DFT at the test terminals.

2. With unit running in heat mode, jump the TEST terminal to the C (common) terminal near it. The board will speed up and enter defrost mode in 5/10/15 seconds, depending on the defrost time selection. Compressor delay will not function during speed-up. NOTE: Manually initiating a defrost will cause the compressor to run continually when entering defrost.

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 the equipment owner's preference.

Optional Electric Heater Kits

Optional ﬁ eld-installed electric heater kits are available in 10 kw through 36 kw heating capacities. Split System Heat Pumps are designed to allow optional auxiliary electric heat to be ﬁ eld installed as required by the building’s particular heating load. The options available for each unit are shown in the heater kit installation instructions.

Install the heater kits as directed by the instructions supplied with the heater kit. Follow all cautions and warnings as directed.

NOTE: If the jumper is removed before the test is over,

the processor will perform the remainder of a normal defrost as noted above.

• The delay/no-delay pin affects compressor operation during defrosts. The default setting is delay. To switch from delay to no-delay, remove the pin from the delay pin location and move it to the no-delay pin location.

- 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.

Normal Defrost Procedure To 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

Page 12

START UP & ADJUSTMENTS

Pre-Start Check List

 Verify the unit is level and allows condensate to drain.  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 duct work is sealed to prevent air leakage.  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

protection is sized properly.

 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.

The thermostat function switch should be set to OFF and the thermostat fan switch 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.

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 ﬁ eld wires at the disconnect. DO NOT alter unit wiring.

Short Cycle Protection

1. Set the thermostat system mode to COOL. Note the

temperature setting of the thermostat and gradually raise the set-point temperature until the unit deenergizes.

2. Immediately lower the set point temperature of the

thermostat to its original setting and verify that the indoor blower is energized and outdoor unit remains de-energized.

3. After approximately 5 minutes, verify the compressor and fan energize and the temperature of the discharge air is cooler than the room temperature.

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.

NOTE: If refrigerant pressures are abnormal and

the compressor is rotating backwards, shut off main power to the unit and switch any two ﬁ eld 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 Heating

1. 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. Verify the outdoor unit 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:

T5BP Split System Heat Pumps leave the factory with a 90 oz. (5.63 Lbs.) R410A refrigerant holding charge. 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.

Page 13

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) before ﬁ nalizing the full system refrigerant charge. For ﬁ nal charges based on matched systems and speciﬁ ed line lengths, see physical and electrical speciﬁ cations (Table 4, page 15).

• To achieve rated capacity and efﬁ ciency, the compressor must 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.

• Cooling mode charging charts are applicable only to matched assemblies of NORDYNE equipment and listed airﬂ ows for the indoor coil. T5BP outdoor units with indoor coils not listed are not recommended and 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. Refer to Figure 8 for

7.5 ton units or Figure 9 for 10 ton units (page 19).

• 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. A common suction port for heating mode charging is included and located on the compressor access panel above the outdoor unit service valves.

• Heat mode veriﬁ cation charts are provided for quick reference when the unit is in heating mode and for the inspection of the liquid line pressures and temperatures. Refer to Figure 10 for 7.5 ton units or Figure 11 for 10 ton units (page 21).

Charging an R410A system in AC mode at outdoor temperatures above 55° F for optimized sub-cooling of 10° F to 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. Determine the required liquid refrigerant pressure

from the appropriate charging chart (Figures 8 or 9).

• 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.

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.

Page 14

COMPONENT FUNCTIONS

Defrost Control Board

This control includes - 5 minute anti-short cycle timer protection for Stage 1 Heat/Cool, defrost time interval selection, and reversing valve, outdoor fan, and auxiliary heat operation during defrost control. See page 11.

Defrost Temperature Sensor

The switch can be located on either end of the outdoor coil. The switch is a non-adjustable, sealed, bi-metal sensor set to open at 68° F and closes at 30° F. When closed, the compressor run time is accumulated and initiates coil defrost dependent on time interval selected.

High Pressure Switch (HPS)

A high-pressure switch is factory-installed and located in the liquid line internal to the outdoor unit. The switch is designed to protect the system when very high pressures occur during abnormal conditions. Under normal conditions, the switch is closed. If the liquid pressure rises above 650 psig, then the switch will open and de-energize the

FIGURES & TABLES

DO NOT OBSTRUCT TOP OF UNIT

Allow 6' Minimum Clearance

outdoor unit. The switch will close again once the liquid pressure decreases to 460 psig. Please note that the switch interrupts the thermostat inputs to the unit. Thus, when the switch opens and then closes, there will be a 5 minute short cycling delay before the outdoor unit will energize.

Low Pressure Switch (LPS)

A low-pressure switch is factory-installed and 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 will open and de-energize the outdoor unit. The switch will close again once the suction pressure increases above 20 psig. Please note that the switch interrupts the thermostat inputs to the unit. Thus, when the switch opens and then closes, there will be a 5 minute short cycling delay before the outdoor unit will energize.

Figure 5. T5BP Heat Pump Dimensions

Model

Number

T5BP-

090C 390 424 44 1/4 37 1/2 37 1/2 50 090D 390 424 44 1/4 37 1/2 37 1/2 50 120C 427 461 52 1/4 37 1/2 37 1/2 58 120D 427 461 52 1/4 37 1/2 37 1/2 58

Without Packaging Shipping Weight All dimensions in inches

Unit Weights (Lbs.) Height -H- Width -W- Depth -D- Shipping Height

Table 3. Unit Dimensions & Shipping Weights

Page 15

ELECTRICAL INFORMATION

Model

Number

T5BP-

090C 090D 120C 120D

208-230V 460V 208-230V 460V

920892 920893 920894 920895

PERFORMANCE DATA

Gross Cooling Capacity (95

Net Cooling Capacity - Btuh 90,000 90,000 116,000 116,000

A.R.I. Rated Airﬂ ow - C.F.M. 3,000 3,000 4,000 4,000

Cooling - Efﬁ ciency E.E.R. (Btu/Watt) 11.00 11.00 11.00 11.00

Cooling - Efﬁ ciency I.E.E.R. 11.80 11.80 11.50 11.50

F) Btuh 92,400 92,400 120,700 120,700

Gross Heating Capacity (47˚F) - Btuh 86,000 86,000 107,000 107,000

Heating - Efﬁ ciency - C.O.P. 3.30 3.30 3.30 3.30

Gross Heating Capacity (17˚F) - Btuh 54,000 54,000 70,000 70,000

Heating - Efﬁ ciency - C.O.P. 2.40 2.40 2.40 2.40

ELECTRICAL RATINGS

Volts / Phase / Hz. 208-230 / 3 / 60 460 / 3 / 60 208-230 / 3 / 60 460 / 3 / 60

Operating Voltage 187-253 414-506 187-253 414-506

Unit Rated Ampacity 28.3 13.9 33.4 18.4

Minimum Circuit Ampacity (MCA) 34.6 17.0 40.9 22.6

Max. Overcurrent Protection (MOP) 50 25 70 35

Compressor Data:

1 ea. 1 ea. 1 ea. 1 ea.

Compressor(s) (Scrolls) ZP83KCE-TF5 ZP83KCE-TFD ZP103KCE-TF5 ZP103KCE-TFD

Volts / Phase /Hz. 208-230 / 3 / 60 460 / 3 / 60 208-230 / 3 / 60 460 / 3 / 60

Rated Load Amps (RLA) 25.0 12.2 30.1 16.7

Lock Rotor Amps (LRA) 164 100 225 114

Stages / Percent 1 / 100 1 / 100 1 / 100 1 / 100

Crankcase Heater - Qty. / Type 1 / Band 1 / Band 1 / Band 1 / Band

Outdoor Fan Assembly:

1 ea. 1 ea. 1 ea. 1 ea.

Volts / Phase /Hz. 208-230 / 1 / 60 460 / 1 / 60 208-230 / 1 / 60 460 / 1 / 60

Motor - HP / RPM 3/4 - 875 3/4 - 875 3/4 - 875 3/4 - 875

Motor Amps 3.3 1.7 3.3 1.7

Fan Blade - Diameter / Pitch / # Blades 30” / 22 / 3 30” / 22 / 3 30” / 26 / 3 30” / 26 / 3

RPM / CFM (Max. - Total) 850 - 7,200 850 - 7,200 850 - 8,000 850 - 8,000

PHYSICAL DATA & REFRIGERANT SPECS

Outdoor Coil Assembly:

Area (Ft.

) 31.94 31.94 38.33 38.33

1 ea. 1 ea. 1 ea. 1 ea.

Rows - FPI 2 - 16 2 - 16 2 - 18 2 - 18

Tube Diameter 3/8” OD 3/8” OD 3/8” OD 3/8” OD

Refrigerant Suction Line - Length / OD

0 - 75 Ft. / 1-1/8” 0 - 75 Ft. / 1-1/8”

76 - 100 Ft. / 1-3/8”

(7)

76 - 100 Ft. / 1-3/8”

(7)

0 - 100 Ft. / 1-3/8”

(7)

0 - 100 Ft. / 1-3/8”

Refrigerant Liquid Line - Length / OD All Lengths - 5/8” OD All Lengths - 5/8” OD All Lengths - 5/8” OD All Lengths - 5/8” OD

Refrigerant Charge R410A R410A R410A R410A

Holding Charge - (oz.) 90 90 90 90

Total System with 25’ Line Set 480 480 528 528

High Pressure Switch (PSIG)

Loss of Charge Pressure Switch (PSIG)

Cut Out: 650 +/- 15

Cut In: 460 +/- 15

Cut Out: 5 +/- 5

Cut In: 20 +/- 5

NOTE: Net capacity includes indoor blower motor heat deduction. Gross capacity does not include indoor blower motor heat deduction.

Certiﬁ ed in accordance w/ A.R.I. Standard 340/360 at 95° F Outdoor DB and 80° F db/67° F wb evaporator entering air at minimum external duct static pressures allowed by the standard.

E.E.R. - Energy Efﬁ ciency Ratio. E.E.R. is determined @ 95˚F Outdoor DB & 80˚F DB / 67˚F WB Air Indoor

I.E.E.R. - Integrated Energy Efﬁ ciency Ratio. Certiﬁ ed in accordance with A.R.I. Standard 340/360.

C.O.P. - Coefﬁ cient of Performance.

Delay Fuse or HACR Type Circuit Breakers can be used.

Add / Subtract 9.0 oz. of refrigerant per 5 Ft. change in length from original 25 Ft. lineset total system charge.

Requires a 1-3/8” to 1-1/8” reducer line to unit.

(7)

Table 4. Electrical Speciﬁ cations & Physical Data - 11.0 E.E.R. - 3 Phase / 60 Hz

Page 16

Three Phase

1. Couper le courant avant de faire letretien.

3. Ne convient pas aux installations de plus de 150

volt a la terre.

2. Employez uniquement des conducteurs en cuivre

7. Wires connected to normally closed contacts.

8. Transformer primary connection will match unit

rated voltage.

9. For 208V operation remove white wire from 230V tap

and place on 208V tap.

BLACK

BROWN

RELAY

BLACK

ORANGE

CAPACITOR

PURPLE

ORANGE

RED

BLACK

DFT2

BLUE

DFT

REV

DFT1

VALVE

BLACK

RED

W2 R DFT

T2 C

GREEN

C Y O W2 RE

DEFROST

BOARD

CONTROL

YELLOW

09/09

7109690

SWITCH

HIGH PRESSURE

208

BLACK

24V

CONTACTOR

230

SECONDARY

SEE NOTE 9

460

SEE NOTE 8

YELLOW

¢710969V¤

BROWN

PRIMARY

TRANSFORMER

BROWN

WHITE

BLACK

T1 T2 T3

L1 L2 L3

SWITCH

YELLOW

BLACK

AUX.

SWITCH

BLACK

SEE NOTE 7

BLACK

COMPRESSOR

GRD

FIELD SUPPLY

THREE PHASE

LOW PRESSURE

WIRING DIAGRAM

CCHCAS

RELAY

OUTDOOR

FAN MO TOR

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

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

5. For supply wire ampacities and overcurrent protection, see unit data label.

Commercial Split System Heat Pump

NOTES:

1. Disconnect all power before servicing.

2. For supply connections, use copper conductors only.

section. See installation instructions for typical modifications.

6. Furnace/Air Handler w/factory equipped 24V control circuit transformers,

should be modified/rewired to ONLY use 24V transformer from outdoor

CAPACITOR

Figure 6. T5BP Wiring Diagram

OUTDOOR

FAN MOTOR

COMPRESSOR

DF1

DF2

DFT

LOGIC

RVS

LOW VOLTAGE

BOARD

DEFROST CONTROL

LPS HPS

TERMINAL

5)Ground on location provided inside compressor

period resets the interval to 0.

terminal box.

accumulated. Opening of DFT during defrost or interval

4)With DFT closed and “Y” closed, compressor run time is

RVS - Reversing Valve Solenoid

CC - Contactor Coil

DFT - Defrost Thermostat

LPS - Low Pressure Switch

HPS - High Pressure Switch

CCH - Crankcase Heat

CAS- Contactor Auxilliary Switch (1NO/1NC)

LEGEND:

FIELD WIRING

LOW VOLTAGE

DEFROST BOARD OPERATION

1)Closes during defrost.

2)Opens during defrost.

Rating: 1 Amp. Max.

Rating: 2 HP. at 230 Vac Max.

3)Closed when “Y” is on. Open

when “Y” is off. Provides “off”

“Y” opens.

delay time of 5 mins. when

HIGH VOLTAGE

Page 17

1. Jumper between W2 and E is required.

NOTES:

2. C &W2 to be connected to electric heat.

SINGLE STAGE

HEAT PUMP THERMOSTAT

SEE NOTE 1

O R Y

OUTDOOR

SECTION

TO FIELD SUPPLIED DISCONNECT

GND

BLOWER

MOTER

FREEZESTAT

BROWN

GREEN

G C

BLACK

O R Y

BLACK

SEE NOTE 2

TERMINAL

BOARD

AIR HANDLER

SECTION

SEE NOTE 1

R Y

OUTDOOR

SECTION

SINGLE STAGE

HEAT PUMP THERMOSTAT

TYPICAL HEAT PUMP THERMOSTAT CONNECTION (NO ECONOMIZER)

NOTES:

1. Jumper between W2 and E is required.

2. C & W2 to be connected to electric heat.

3. Remove BLACK wire from air handler low voltage terminal board Y terminal and connect to YELLOW wire from economizer.

4. 2nd Stage refrigerant cooling with optional economizer installed. A 2 stage thermostat is required for simultaneous operation of the economizer

TO FIELD SUPPLIED DISCONNECT

GND

C7150 M.A.S.

BLOWER

MOTER

YELLOW

WHITE

ORANGE

GREY

GREEN

BLACK

BLUE

RED

BROWN

R Y

TERMINAL

BOARD

FREEZESTAT

GREEN

BLACK

SEE NOTE 2

BLACK

SEE NOTE 4

AIR HANDLER

SECTION

SEE NOTE 5

SEE NOTE 3

and refrigerant system. Connect Y2 from 2 stage thermostat to BLUE wire from economizer. If installing an economizer in this unit, refer to the Economizer installation instructions for proper set up and operation.

5. Heat Pump Economizer Relay. Connect B from thermostat to GREY wire from Economizer. Required for proper operation of an economizer (optional) in the heat pump Heating mode. If installing an economizer in this unit, refer to the Economizer installation instructions for proper set up and operation.

VIO-14”

BLU-14”

W7459A

TR 1

JUMPER WIRE

TB-11 M7415A

BLK-12”

RED-12”

GRY-12”

BLK-12”

BLU-12”

GRY-90”

OPTIONAL

ECONOMIZER

GRN-18” GRN-18”

C7400A

YEL-18”

TR1

MIN.

POT.

TYPICAL HEAT PUMP THERMOSTAT CONNECTION (WITH ECONOMIZER)

Figure 7. Typical Heat Pump Thermostat Connections

Page 18

T5BP CHARGING CHARTS - COOLING ONLY

Application Notes on the Use of Charging Charts

• 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.

• When repairing system leakages, always use a nitrogen (inert) gas to protect the refrigerant system and pressure check the repair before re-charging. Always replace the ﬁ lter-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 speciﬁ ed on the unit rating label.

• All T5BP-090/120 units are shipped from the factory with a 90 oz. holding charge refrigerant. Inspect the unit rating label to determine the units information prior to working on the system. DO NOT mix different refrigerants or charge the unit with a refrigerant not listed on the unit rating label.

• Charging charts are valid for a variety of indoor, return air conditions and are most inﬂ uenced by the outdoor ambient 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 the charging charts (Figures 8 or 9, page 19), the ideal system sub-cooling can vary over the range of operation. Reference the charts 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 efﬁ ciency (EER) or rated Coefﬁ cient of Performance (COP) in heating mode.

• To inspect a systems operation, using quality instruments, match the measured liquid temperature to the units chart. The measured liquid pressure reading should be within 3% of the charts value for most installations.

• For systems that are operating with more than a 5% deviation, inspect the unit for the proper voltage and phase balance and the refrigeration system for leaks.

• Units that are operating at less then 95% of the nominal voltage or with a 2% phase imbalance may see a more signiﬁ cant deviation than the amount stated above.

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

Page 19

T5BP Charging Chart - Cooling

7.5 Ton Split System Heat Pump w/ B5SM-090* Indoor Air Handler

525

500

475

Remove refrigerant when above curve

450

425

400

375

350

325

300

Liquid Pressure (psig)

275

250

225

Add refrigerant when below curve

200

175

55 60 65 70 75 80 85 90 95 100 105 110 115 120 125

Liquid Temperature (° F)

Figure 8. Charging Chart for 7.5 Ton Units

T5BP Charging Chart - Cooling

10 Ton Split System Heat Pump w/ B5SM-120* Indoor Air Handler

525

500

475

Remove refrigerant when above curve

450

425

400

375

350

325

300

Liquid Pressure (psig)

275

250

225

200

175

55 60 65 70 75 80 85 90 95 100 105 110 115 120 125

Liquid Temperature (° F)

Add refrigerant when below curve

Figure 9. Charging Chart for 10 Ton Units

Page 20

T5BP HEAT MODE VERIFICATION CHARTS - HEATING ONLY

Application Notes on the use of Heating-mode charge veriﬁ cation charts:

• Read all notes and warnings for the Cooling-mode charging charts prior to using these Heating-mode charge veriﬁ cation charts. 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.

• All T5BP-090/120 units are shipped from the factory with accumulators installed in the refrigeration system and a 90 oz. factory holding charge.

• Before using the heat mode veriﬁ cation charts (Figures 10 or 11, page 21), determine the outdoor ambient temperature and the return air temperature to the unit. Locate the appropriate location on the units veriﬁ cation chart 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. NOTE: If the unit is equipped with an economizer, determine the mixed air temperature entering the ﬁ lters.

• 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 veriﬁ cation charts 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 charts. Switch the unit into cooling mode and allow it to operate and stabilize for a few minutes then inspect the unit operation with the cooling mode charts and procedures.

Before changing the unit charge, always inspect the following items ﬁ rst:

1. Inspect the liquid line temperature on the inlet and outlet of the ﬁ lter dryers. If it is the factory dryer and in good

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

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 ﬁ lters are installed and are clean. The pressure drop across the ﬁ lters should not exceed 0.08

in-W.C.

5. Inspect the indoor coil, indoor blower and blower motor for cleanliness, clogging, and proper operation. Verify

the drive belt is in good condition and properly tightened.

6. Inspect the system for leaks. If a leak cannot be located the system charge is probably correct. Re-inspect the

return air and ambient temperatures and verify that the correct system point on the veriﬁ cation chart was selected.

DO NOT use the charts 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.

Page 21

550

500

T5BP - 090 Heat Mode Verification Chart

80˚ ID Rtn

70˚ ID Rtn

62˚ OD Amb

450

60˚ ID Rtn

400

47˚ OD Amb

350

Liquid Pressure (psig)

300

17˚ OD Amb

250

200

70 75 80 85 90 95 100 105 110 115 120

Liquid Temperature (° F)

Figure 10. Veriﬁ cation Chart for 7 1/2 ton units

T5BP - 120 Heat Mode Verification Chart

80˚ ID Rtn

400

350

300

70˚ ID Rtn

60˚ ID Rtn

17˚ OD Amb

62˚ OD Amb

47˚ OD Amb

Liquid Pressure (psig)

250

200

70.0 75.0 80.0 85.0 90.0 95.0 100.0 105.0 110.0 115.0 120.0

Liquid Temperature (° F)

Figure 11. Veriﬁ cation Chart for 10 ton units

Page 22

Page 23

Page 24

INSTALLATION/PERFORMANCE CHECK LIST

INSTALLATION ADDRESS:

CITY ________________________ STATE ________________

UNIT MODEL # ________________________________________

UNIT SERIAL # _______________________________________

Unit Installed Minimum clearances per Figure 2 (page 7)?

INSTALLER NAME:

CITY _______________________ STATE ________________

ELECTRICAL SYSTEM:

Electrical connections tight? YES NO

Line voltage polarity correct? YES NO

Rated Voltage: ___________________________________ VOLTS

L1-L2 Volts: _____________________________________ VOLTS

L1-L3 Volts: _____________________________________ VOLTS

YES NO

REFRIGERATION SYSTEM:

Was unit given 24 hr warm up period for crankcase heaters?

Stage-1 Liquid Pressure (high side) ________________________

Stage-1 Suction Pressure (low side) ________________________

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

Has the Literature Package been left with the unit?

YES NO

L2-L3 Volts: _____________________________________ VOLTS

Avg. Volts: ______________________________________ VOLTS

Max. deviation of voltage from 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

¢709094<¤

7090940O'Fallon, MO

7090940

Speciﬁ cations and illustrations subject to change

without notice or incurring obligations.

Printed in U.S.A. (01/10)

Reznor T5BP Unit Installation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual