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SPLIT SYSTEM HEAT PUMP
INSTALLATION INSTRUCTIONS
*SH4BE5M - 1SP18K, 1SP24K, 1SP30K, 1SP36K, 1SP42K, 1SP48K, & 2SX60K
(1.5, 2, 2.5, 3, 3.5, 4, & 5 TON) SERIES - SINGLE PHASE MODELS
IMPORTANT
ATTENTION INSTALLERS:
It is your responsibility to know this product
better than your customer. This includes
being able to install the product according
to strict safety guidelines and instructing the
customer on how to operate and maintain the
equipment for the life of the product. Safety
should always be the deciding factor when
installing this product and using common
sense plays an important role as well. Pay
attention to all safety warnings and any other
special notes highlighted in the manual.
Improper installation of the unit 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.
IMPORTANT SAFETY INFORMATION .................. 2
GENERAL REQUIREMENTS ................................. 3
Detecting Leaks of Flammable Refrigerants .......... 4
Removing Refrigerant and Evacuation .................. 4
HEAT PUMP INSTALLATION ................................ 4
General Information ............................................... 4
Before You Install this Unit ..................................... 4
Packaging Removal ............................................... 4
Locating the Heat pump ......................................... 4
Clearance Requirements ....................................... 5
Ground Installations ............................................... 5
Roof Installation ..................................................... 5
Accessory Mounting Kits ........................................ 5
Expansion Device .................................................. 5
Indoor & Outdoor Unit ............................................ 5
Outdoor Orifice Removal & Installation .................. 6
ELECTRICAL WIRING ........................................... 7
Pre-Electrical Checklist .......................................... 7
Line Voltage ........................................................... 7
Grounding .............................................................. 7
Thermostat Connections ........................................ 7
Low Voltage Connections ...................................... 7
START UP & ADJUSTMENTS ............................... 7
Pre-Start Check List ............................................... 7
Start-Up Procedures .............................................. 8
Operating Temperatures ........................................ 8
Air Circulation - Indoor Blower ............................. 8
Indoor Unit Leak Detection .................................. 8
Short Cycle Protection ........................................... 8
System Cooling .................................................... 8
System Heating ................................................... 9
Defrost Control Board Test Pins ............................ 9
HEAT PUMP MAINTENANCE ................................ 9
Panel Removal ....................................................... 9
Panel Installation .................................................... 9
REFRIGERANT CHARGING .................................. 10
Charging the Unit in AC mode ............................... 11
or higher: .............................................................. 11
35 degrees F and 65 degrees F: ......................... 11
35 degrees F:: ...................................................... 12
ELECTRICAL INFORMATION ............................... 13
Figure 8. Wiring Diagram for *SH4BE5M
(1.5 Ton Units) ...................................... 13
Figure 9. Wiring Diagram for *SH4BE5M
(2 - 4 Ton Units) .................................... 14
Figure 10. Wiring Diagram for *SH4BE5M
(5 Ton Units) ....................................... 15
REFRIGERANT RECOVERY ................................. 16
DECOMMISSIONING .............................................. 16
INSTALLATION CHECKLIST ................................. 20
REPLACEMENT PARTS ........................................ 20
14.3 SEER2
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Summary of Contents for Nortek Global SH4BE5M Series
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Page 1: Table Of Contents
SPLIT SYSTEM HEAT PUMP 14.3 SEER2 INSTALLATION INSTRUCTIONS *SH4BE5M - 1SP18K, 1SP24K, 1SP30K, 1SP36K, 1SP42K, 1SP48K, & 2SX60K (1.5, 2, 2.5, 3, 3.5, 4, & 5 TON) SERIES - SINGLE PHASE MODELS IMPORTANT IMPORTANT SAFETY INFORMATION ....2 GENERAL REQUIREMENTS ......... 3 Detecting Leaks of Flammable Refrigerants .. -
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 any *SH4BE5M split system heat pumps are shipped other special notes highlighted in the manual. Safety markings are used frequently throughout this manual to designate a charged with R-454B refrigerant and ready for degree or level of seriousness and should not be ignored. -
Page 3: General Requirements
GENERAL REQUIREMENTS o The following checks shall be applied to installations using FLAMMABLE REFRIGERANTS: • The installer must comply with all local codes and • the actual refrigerant charge is in accordance with regulations which govern the installation of this type of the room size within which the refrigerant containing equipment. -
Page 4: Detecting Leaks Of Flammable Refrigerants
Read and thoroughly General Information understand the instructions provided with the equipment The *SH4BE5M series heat pump is designed only for outdoor prior to performing the installation and operational checkout rooftop or ground level installations. This unit has been tested of the equipment. -
Page 5: Clearance Requirements
Roof Installation WALL The unit may only be installed on a structure that is capable of supporting the total weight of the unit and its anchorage. 12” (30 cm) The support for the base of the unit may not slope more than 1/8 inch per foot. -
Page 6: Outdoor Orifice Removal & Installation
2. Insert a light-gauge wire hook between the valve body • Refrigerant tubing should be routed in a manner that and the restrictor orifice while being careful not to scratch minimizes the length of tubing and the number of bends either part. -
Page 7: Electrical Wiring
ELECTRICAL WIRING • 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 WARNING: the control compartment. • Use only copper wire for the line voltage power supply to Electrical Shock Or Fire Hazard this unit in strict accordance of the NEC (ANSI/NFPA 70), applicable local codes, and the instructions provided with... -
Page 8: Start-Up Procedures
Start-Up Procedures (Optional) WARNING: Green This unit is equipped with a crankcase heater. Allow 24 hours prior to continuing the start up White procedures to allow for heating of the refrigerant compressor crankcase. Failure to comply may Black result in damage and could cause premature failure of the system. -
Page 9: System Heating
3. Verify HI and LO refrigerant pressures. STATUS STATUS DIAGNOSTIC 4. Allow the system to operate for several minutes and then INDICATOR TYPE DESCRIPTION set the temperature selector above room temperature. Operating Status Cooling, 1st Stage Verify the fan and compressor cycle off with the thermostat. Operating Status Cooling, 2nd Stage NOTE: The blower should also stop unless fan mode is... -
Page 10: Refrigerant Charging
REFRIGERANT CHARGING WARNING: *SH4BE5M Split System Heat Pumps are shipped charged with R-454B refrigerant and ready for installation. If repairs make it necessary for evacuation and charging, it should only be attempted by qualified trained personnel thoroughly familiar with this equipment. Under no circumstances should the owner attempt to install and/or service this equipment. -
Page 11: Charging The Unit In Ac Mode
indoor units. For reference, these units are listed in the 4. Adjust the charge to match the superheat (for fixed orifice AHRI Directory with all approved combinations of indoor systems) or subcooling (for TXV systems). The charging coils and units. Installing these outdoor units on systems tables are on the inside of the outdoor unit’s electrical that combine it with an indoor coil or unit not listed there, is box cover panel. -
Page 12: If The Outdoor Temperature Is Below 35 Degrees F
For TXV systems: • If your measured subcooling at the liquid valve is LESS THAN the recommended subcooling value in the table then ADD refrigerant. • If your measured subcooling at the liquid valve is GREATER THAN the recommended subcooling value in the table then REMOVE refrigerant If the outdoor temperature is below 35 degrees F: After completing the refrigerant line connections, leak... -
Page 13: Electrical Information
GREEN BLACK Figure 8. Wiring Diagram for *SH4BE5M (1.5 Ton Units) - Page 14 YELLOW BLACK Figure 9. Wiring Diagram for *SH4BE5M (2 - 4 Ton Units)
- Page 15 Figure 10. Wiring Diagram for *SH4BE5M (5 Ton Units)
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Page 16: Refrigerant Recovery
REFRIGERANT RECOVERY • It is recommended good practice that all refrigerants are recovered when possible. • Before decommissioning the system: WARNING: • Become familiar with the equipment and its operation. • Take a sample of oil and refrigerant in case analysis is Recovering refrigerant involves breaking into the required prior to re-use of recovered refrigerant. -
Page 20: Installation Checklist
COMPONENTS: • Blower Assembly • Fan Grille • Cabinet Panels • Filter/Driers • Expansion Valves 10469100 Specifications & illustrations subject to change without notice or incurring obligations (02/24). O’Fallon, MO, © Nortek Global HVAC LLC 2024. All Rights Reserved. (NEW)
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