Contents
Contents
Changeability of this document.................................. 5
Associated literature............................................... 5
Nomenclature 25 ton to 80 ton model number........ 6
General........................................................................... 9
Introduction........................................................... 15
Ecological and economical design...................... 15
Condensing section.............................................. 15
Scroll compressors.......................................... 15
Multiple compressor staging......................... 15
Compressor circuiting.................................... 16
Compressor sound blankets.......................... 16
Replaceable core filter driers......................... 16
Low ambient operation.................................. 16
Condenser fan motors................................... 16
Condenser coils............................................... 16
Condenser coil protection.............................. 16
Blank section......................................................... 16
Sound attenuator............................................ 16
Humidifier........................................................ 16
Air blender....................................................... 16
Evaporator section................................................ 16
Evaporator coils............................................... 16
Modulating hot gas reheat............................ 16
Double sloped stainless steel drain pan....... 17
Heating section..................................................... 17
Gas heat........................................................... 17
Electric heat..................................................... 17
Hydronic heat.................................................. 17
Air management................................................... 17
Fans................................................................... 17
Premium efficiency motors............................ 17
Building pressure control............................... 17
Variable frequency drives............................... 17
Fan spring isolation........................................ 18
Energy recovery wheel................................... 18
Controls.................................................................. 18
Rooftop unit controller................................... 18
BACnet
terminal board.................................................. 18
Indoor air quality.................................................. 18
Indoor air quality............................................ 18
Double wall construction............................... 18
Demand control ventilation........................... 18
Smoke control.................................................. 19
Filtration........................................................... 19
Ultraviolet lights.............................................. 19
Electrical................................................................. 19
Single point power.......................................... 19
Dual point power............................................. 19
Power phase monitor..................................... 19
Unit-mounted disconnect, 65 kA SCCR......... 19
Service and Installation........................................ 19
Split ship........................................................... 19
Internal lights.................................................. 19
Access doors, padlocks, viewports,
safety latch and door tiebacks........................ 19
Service valves and sight glasses.................... 20
Convenience outlet......................................... 20
Condenser safety tie-off................................. 20
Condenser cleaning hatch............................. 20
Burglar bars..................................................... 20
Inlet, belt guard and spare belts................... 20
Start-up and air balancing wizard................. 20
Factory run-tested........................................... 20
RTUToolKit app and QR code......................... 20
Safety considerations........................................... 22
Limitations............................................................. 23
Reference............................................................... 23
Approvals............................................................... 23
Installation................................................................... 24
Unit inspection...................................................... 24
Long term storage.......................................... 24
Unit placement...................................................... 24
Roof curb................................................................ 24
Clearances and locations............................... 24
Rigging and handling........................................... 26
Weights and unit dimensions.............................. 30
Weights............................................................. 30
Dimensions...................................................... 33
Roof curb dimensions..................................... 47
Submittal data....................................................... 61
Electrical data........................................................ 61
Electrical service sizing................................... 62
Control wiring........................................................ 69
Occupancy input............................................. 69
Safety switch input.......................................... 69
Tempmaster
Tempmaster
®
Omni™ Premier 25 Ton to 80 Ton Rooftop Units Installation and Maintenance Guide
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