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SPLIT SYSTEM HEAT PUMP FOR MANUFACTURED HOUSING
INSTALLATION INSTRUCTIONS
*SH3ME4M SERIES - 1RP24K, 1RP30K, 1SP36K, 1SP42K, 1SP48K (2, 2.5, 3, 3.5 & 4 TON) -
SINGLE PHASE MODELS WITH BRAZED CONNECTIONS
IMPORTANT SAFETY INFORMATION ......................2
HEAT PUMP INSTALLATION ....................................3
General Information ...................................................3
Before You Install this Unit .........................................3
Packaging Removal ...................................................3
Locating the Heat Pump ............................................3
Clearance Requirements ...........................................3
Ground Level .............................................................3
Roof Mount ................................................................3
Accessory Mounting Kits ............................................3
SYSTEMS EXPANSION DEVICE ...............................4
& Outdoor Unit ...........................................................4
Coupling the Line-Set to the Unit................................4
REFRIGERANT CHARGING ......................................4
ELECTRICAL WIRING ...............................................5
Pre-Electrical Checklist ..............................................5
Line Voltage ...............................................................5
Grounding ..................................................................6
Thermostat Connections ............................................6
Low Voltage Connections ..........................................6
START UP & ADJUSTMENTS ...................................6
Pre-Start Check List ...................................................6
Start-Up Procedures ..................................................6
Operating Temperatures ............................................7
Air Circulation - Indoor Blower ...................................7
System Cooling ..........................................................7
System Heating ..........................................................7
Charging the Unit in AC Mode ...................................7
or higher: ..................................................................7
35 degrees F and 65 degrees F ..............................8
35 degrees F............................................................8
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.
HEAT PUMP MAINTENANCE ....................................9
Panel Removal ...........................................................9
Panel Installation ........................................................9
ELECTRICAL DIAGRAMS & TABLES ......................10
Figure 6. Wiring Diagram for *SH3ME4M Units
Figure 7. Wiring Diagram for *SH3ME4M Units
INSTALLATION CHECKLIST .....................................12
REPLACEMENT PARTS ............................................12
IMPORTANT
ATTENTION INSTALLERS:
with Rotary Compressors (2.0 & 2.5T) .....10
with Scroll Compressors
(3.0, 3.5 & 4.0T).........................................11
14.3 SEER2
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Summary of Contents for Nortek SH3ME4M Series
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Page 1: Table Of Contents
SPLIT SYSTEM HEAT PUMP FOR MANUFACTURED HOUSING 14.3 SEER2 INSTALLATION INSTRUCTIONS *SH3ME4M SERIES – 1RP24K, 1RP30K, 1SP36K, 1SP42K, 1SP48K (2, 2.5, 3, 3.5 & 4 TON) - SINGLE PHASE MODELS WITH BRAZED CONNECTIONS IMPORTANT SAFETY INFORMATION ......2 HEAT PUMP MAINTENANCE ........9 Panel Removal ............9... -
Page 2: Important Safety Information
• Installation of this equipment will require the use of refrigerant line-sets with quick connect couplings. Use WARNING: only Nortek approved couplings or line-sets for these connections. *SH3ME4M Split System Heat Pumps are shipped • Follow all precautions in the literature, on tags, and on charged with R410A refrigerant and ready labels provided with the equipment. -
Page 3: Heat Pump Installation
General Information clearance reduced to a minimum of 6 inches. The other The *SH3ME4M series Heat Pump is designed only for side adjacent to the service panel requires 24 inches for outdoor rooftop or ground level installations. This unit has been service access. -
Page 4: Installation/Verification Of The Systems Expansion Device
• Refer to the Quick Reference Data sheet for additional the system have been installed in accordance with these charging information for this unit with the approved Nortek instructions and sound installation practices to insure indoor units. For reference, these units are listed in the reliable system operation and longevity. -
Page 5: Electrical Wiring
Nortek to the unit before performing any maintenance does not recommend the use of this product in unlisted combinations, and the system performance and efficiency or service. -
Page 6: Grounding
• For applications utilizing the outdoor thermostatic switch • Provide power supply for the unit in accordance with the unit wiring diagram, and the unit rating plate. Connect the within these units, the installer shall need to wire in line-voltage leads to the terminals on the contactor inside the switch as appropriate for their application. -
Page 7: Air Circulation - Indoor Blower
heating mode, at higher than 70°F ambient temperatures may • Board anti-short cycle timer can be bypassed by shorting require the use of a Heat Pump Mild Weather Control Kit. the test terminals for less than 1 second while there is a call for heating or cooling. -
Page 8: If The Outdoor Temperature Is Between
2. Calculate the amount of additional refrigerant needed for a.) The chargecalculator.com website. This will walk the line set length of the actual installation. This information you through the charging process step by step. is on the first page of the unit’s QRD (Quick Reference b.) The charging tables on the inside of the outdoor Data sheet). -
Page 9: Heat Pump Maintenance
HEAT PUMP MAINTENANCE Panel Removal 1. Remove screws securing the panel. 2. Slide the panel up towards the top pan in order to clear WARNING: the bottom flange from the base pan. See Figure 3. Swing the bottom of the panel out and pull the panel down To prevent electrical shock, personal injury, or to remove it from the unit. -
Page 10: Electrical Diagrams & Tables
ELECTRICAL DIAGRAMS & TABLES YELLOW BLACK BROWN Figure 6. Wiring Diagram for *SH3ME4M Units with Rotary Compressors (2.0 & 2.5T) - Page 11 YELLOW BLACK BROWN Figure 7. Wiring Diagram for *SH3ME4M Units with Scroll Compressors (3.0, 3.5 & 4.0T)
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Page 12: Installation Checklist
Stage-1 Suction Pressure (low side): Fan Motor COMPONENTS: Blower Assembly Fan Grille Cabinet Panels Filter/Driers Expansion Valves Specifications & illustrations subject to change without notice or incurring obligations (07/22). 10434490 O’Fallon, MO, © Nortek Global HVAC LLC 2022. All Rights Reserved. (NEW)
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