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SPLIT SYSTEM HEAT PUMP WITH MICROCHANNEL COILS
INSTALLATION INSTRUCTIONS
T4BD - 042, 048, & 060 (3.5, 4, & 5 TON) SERIES
SINGLE PHASE MODELS
IMPORTANT SAFETY INFORMATION ............... 2
HEAT PUMP INSTALLATION .............................. 3
General Information ..................................................... 3
Before You Install the Heat Pump ................................ 3
Locating the Heat Pump .............................................. 3
Packaging Removal ..................................................... 3
Ground Level ............................................................... 3
Rooftop ........................................................................ 3
& Outdoor Unit ............................................................. 4
Outdoor Orifice Removal & Installation ........................ 4
ELECTRICAL WIRING ......................................... 5
Pre-Electrical Checklist ................................................ 5
Line Voltage ................................................................. 5
Grounding .................................................................... 6
Thermostat / Low Voltage Connections ....................... 6
TM
Diagnostics Module................................ 6
Compressor Protection .............................................. 7
Resetting Alert Codes ................................................ 7
START UP & ADJUSTMENTS ............................ 7
Pre-Start Check List ..................................................... 7
Start-Up Procedures .................................................... 7
Air Circulation - Indoor Blower ..................................... 7
Short Cycle Protection ................................................. 7
System Cooling ............................................................ 8
System Heating ............................................................ 8
Defrost Control Board Test Pins .................................. 8
HEAT PUMP MAINTENANCE ............................. 9
It is your responsibility to know this product better than your customer. This includes being able to install the product
according to strict safety guidelines and instructing the customer on how to operate and maintain the equipment for
the life of the product. Safety should always be the deciding factor when installing this product and using common
sense plays an important role as well. Pay attention to all safety warnings and any other special notes highlighted
in the manual. Improper installation of the furnace or failure to follow safety warnings could result in serious injury,
death, or property damage.
These instructions are primarily intended to assist qualified individuals experienced in the proper installation of
this appliance. Some local codes require licensed installation/service personnel for this type of equipment. Please
read all instructions carefully before starting the installation. Return these instructions to the customer's package
for future reference.
DO NOT DESTROY. PLEASE READ CAREFULLY & KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.
REFRIGERANT CHARGING ............................... 9
Charging the Unit in AC mode ..................................... 9
Figure 6. Charging Chart for 3.5 Ton Units
Figure 7. Charging Chart for 4 Ton Units
Figure 8. Charging Chart for 5 Ton Units
Table 5. Charging Table for T4BE-042KA Series
Table 6. Charging Table for T4BE-048KA Series
Table 7. Charging Table for T4BE-060KA Series
Table 8. Heat Mode Table for 3.5 Ton Models .......... 15
Table 9. Heat Mode Table for 4 Ton Models ............. 15
Table 10. Heat Mode Table for 5 Ton Models ........... 15
WIRING DIAGRAMS ............................................ 16
Figure 9. Wiring Diagram for 3.5 - 5 Ton Models
Figure 10. Wiring Diagram for 3.5 - 5 Ton Models
Figure 11. Wiring Diagram for 3.5 - 5 Ton Models
INSTALLATION / PERFORMANCE CHECKLIST 20
IMPORTANT
(TXV Matches) ........................................... 10
(TXV Matches) ........................................... 11
(TXV Matches) ........................................... 11
(3.5 Ton Models) - Restrictor Matches ....... 12
(4 Ton Models) - Restrictor Matches .......... 12
(5 Ton Models) - Restrictor Matches .......... 13
Module ........................................................ 16
Diagnostic Module .................................... 17
Equipped with Low Pressure Switch ........ 18
13 SEER
TM
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Related Manuals for Nordyne T4BD-042 Series
Summary of Contents for Nordyne T4BD-042 Series
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Page 1: Table Of Contents
SPLIT SYSTEM HEAT PUMP WITH MICROCHANNEL COILS 13 SEER INSTALLATION INSTRUCTIONS T4BD - 042, 048, & 060 (3.5, 4, & 5 TON) SERIES SINGLE PHASE MODELS IMPORTANT SAFETY INFORMATION ....2 REFRIGERANT CHARGING ....... 9 Charging the Unit in AC mode ........9 HEAT PUMP INSTALLATION ...... -
Page 2: Important Safety Information
IMPORTANT SAFETY INFORMATION WARNING: INSTALLER: Please read all instructions before servicing this equipment. Pay attention to all safety warnings and Unless noted otherwise in these instructions, only any other special notes highlighted in the manual. Safety factory authorized parts or accessory kits may markings are used frequently throughout this manual to be used with this product. -
Page 3: Heat Pump Installation
HEAT PUMP INSTALLATION Packaging Removal To prevent damage to the tubing onnections, carefully General Information remove the carton and user’s manual from the equipment. Split system heat pumps are designed only for outdoor Discard the shipping carton. rooftop or ground level installations. This unit has been tested for capacity and efficiency in accordance with Ground Level AHRI Standards and will provide many years of safe... -
Page 4: Connecting Refrigerant Tubing Between The Indoor & Outdoor Unit
Connecting Refrigerant Tubing Between connection of the liquid valve and not inside the outdoor unit’s distributor. Perform steps 1 - 5 if the outdoor restrictor the Indoor & Outdoor Unit needs to be changed. CAUTION: CAUTION: When servicing, cover or seal openings to When servicing, cover or seal openings to minimize the exposure of the refrigerant system minimize the exposure of the refrigerant system... -
Page 5: Electrical Wiring
Line Voltage 2. Insert a light-gauge wire hook between the valve body • A wiring diagram is located on the inside cover of the and the restrictor orifice while being careful not to scratch either part. Carefully remove the restrictor orifice from electrical box of the outdoor unit. -
Page 6: Grounding
THERMOSTAT MAXIMUM RECOMMENDED Thermostat WIRE GAUGE THERMOSTAT WIRE LENGTH (FT) Green W2 IN Table 2. Thermostat Wire Thermostat / Low Voltage Connections White • Thermostat connections should be made in accordance W2 OUT with the instructions supplied with the thermostat and the indoor equipment. -
Page 7: Compressor Protection
START UP & ADJUSTMENTS Compressor Pre-Start Check List Common Wire √ Verify the unit is level and has sufficient clearances for unobstructed airflow. √ Verify the outdoor coil and top of the unit are free from Reset Button obstructions and debris, and all equipment access/ control panels are in place. -
Page 8: System Cooling
System Cooling System Heating 1. Set the thermostat’s system mode to COOL and the 1. Set the thermostat's system mode to HEAT and the fan mode to AUTO. Gradually lower the thermostat temperature mode to below room temperature. temperature setpoint below room temperature and 2. -
Page 9: Heat Pump Maintenance
• Cooling mode charging charts are applicable only HEAT PUMP MAINTENANCE to matched assemblies of this equipment and listed airflows for the indoor coil. Refer to the Quick Reference WARNING: Data sheet for additional charging information. Outdoor units with non-AHRI listed indoor coils are not To prevent electrical shock, personal injury, or recommended and deviations from rated airflows or death, disconnect all electrical power to the unit... -
Page 10: Charging Charts & Application Notes - (Cooling Only)
Charging Charts & Application Notes - (Cooling Only) • 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. •... - Page 11 T4BD-048KA Charging Chart - Cooling Remove refrigerant when above the curve Add refrigerant when below the curve Liquid Temperature ( Figure 7. Charging Chart for 4 Ton Units (TXV Matches) T4BD-060KA Charging Chart - Cooling Remove refrigerant when above the curve Add refrigerant when below the curve Liquid Temperature ( Figure 8.
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Page 12: Charging Tables & Application Notes - (Cooling Only)
Charging Tables & Application Notes - (Cooling Only) Shaded boxes indicate flooded conditions. Rated design values. The suction pressure will be lower than design value if indoor air flow, entering dry bulb, or entering wet bulb temperatures are lower than design. 1. - Page 13 OUTDOOR TEMPERATURE (°F) SUCT. PRESS. LIQ. DIS. LIQ. DIS. LIQ. DIS. LIQ. DIS. LIQ. DIS. LIQ. DIS. LIQ. DIS. LIQ. DIS. PRESS. TEMP. PRESS. TEMP. PRESS. TEMP. PRESS. TEMP. PRESS. TEMP. PRESS. TEMP. PRESS. TEMP. PRESS. TEMP. Table 7. Charging Table for T4BE-060KA Series (5 Ton Models) – Restrictor Matches...
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Page 14: Heat Mode Tables & Application Notes (Heating Only)
Heat Mode Tables & Application Notes - (Heating Only) Shaded boxes indicate flooded conditions. Rated design values. The suction pressure will be lower than design value if indoor air flow, entering dry bulb, or entering wet bulb temperatures are lower than design. 1. - Page 15 OUTDOOR TEMPERATURE (° F) 209 216 123 232 239 127 255 262 130 278 285 133 294 301 143 102 325 333 160 119 357 364 178 216 223 121 238 245 125 260 267 128 282 289 131 301 308 140 103 332 340 156 120 364 371 171 223 230 119 244 251 123 265 272 126...
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Page 16: Wiring Diagrams
WIRING DIAGRAMS YELLOW YELLOW BLACK Figure 9. Wiring Diagram for 3.5 - 5 Ton Models Equipped With CoreSense Diagnostic Module... -
Page 17: Not Equipped With Coresense
YELLOW YELLOW BLACK Figure 10. Wiring Diagram for 3.5 - 5 Ton Models NOT Equipped With CoreSense Diagnostic Module... -
Page 18: Equipped With Low Pressure Switch
YELLOW YELLOW BLACK Figure 11. Wiring Diagram for 3.5 - 5 Ton Models Equipped with Low Pressure Switch... - Page 20 REPLACEMENT PARTS CITY _______________________ STATE ________________ Has the owner’s information been Replacement parts are available through all Nordyne reviewed with the customer? distributors. Please have the complete model and serial Has the Literature Package been left number of the unit when ordering replacement parts.