SM Split AH/AV Air Handler
SM Split AH/AV Air Handler8733826256 (2020/06)
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Subject to change without prior notice
Document Conventions .......................................................3
Key to Symbols............................................................ 3
Safety Warnings..................................................................3
Model Nomenclature ...........................................................4
CS/Air Handler Pairings.......................................................5
SM Split AH/AV Standard Package .......................................6
General Description ..................................................... 6
Moving and Storage ..................................................... 6
Initial Inspection.......................................................... 6
Unit Installation ..................................................................7
Location Selection...............................................................7
Air Handler Location..................................................... 7
Condensing Section Location ........................................ 7
Installation .........................................................................7
Air Handler Section Installation...................................... 8
Hanging Bracket Kit...................................................... 8
Condensate Drain........................................................ 9
Duct System .....................................................................10
Electrical..........................................................................10
Electronic Thermostat Installation ................................ 11
Low-Voltage Connection Points ................................... 12
ECM Interface Board .................................................. 13
Thermostat Connections............................................. 13
Refrigerant Lines ..............................................................15
Linear vs. Equivalent Line Length ................................. 15
Connecting Refrigerant Lines....................................... 16
Typical System Setup ........................................................18
Specific Application Considerations ...................................19
Well Water Systems ................................................... 19
Cooling Tower/Boiler Systems..................................... 19
Geothermal Systems.................................................. 19
Post-Installation System Checkout .....................................20
System Operation .............................................................20
Unit Start-up.....................................................................20
Sequence of Operation ......................................................20
Options ............................................................................22
Electric Heat ............................................................. 22
Troubleshooting................................................................23
Unit Lockouts............................................................ 25
Maintenance.....................................................................26
Decommissioning Information ...........................................27
Protecting the Environment......................................... 27
Check-Out Sheet ...............................................................28
Wiring Diagrams ............................................................... 29
Dimensional Drawings.......................................................31
Terminology ..................................................................... 33
Acronyms .................................................................33
Terms.......................................................................33
Notes ............................................................................... 34
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