Interior View

Model YDSA Video Marketing Catalog

Advantages of using Model YDSA

Model YDSA space conditioning unit provides high efficiency to all aspects of the space temperature control application. The DX system maximizes efficiency with the use of modulating digital scroll technology, ECM condenser supply fans and optimized coil designs. The DX system exceeds ASHRAE standard 90.1 requirements. The unit’s blower system incorporates superior energy efficient blower design with variable speed control to deliver the airflow that the application requires. YDSA utilizes the Tcore3® condensing gas heat technology. The gas heating system maintains greater than 90% efficiency throughout the control range delivering complete savings. The system features state of the art stand alone control system further maximizes energy use while maintaining space temperature condition.

Heating Range ( MBH )

Cooling Range ( MBH )

Airflow Range ( CFM )

Heating Efficiency ( Gross )

Supply & Exhaust Fan

  • 3,500 - 11,550 SCFM
  • Direct drive backward incline plenum fan
  • High external static pressure capability
  • Easy CFM verification for all fans
  • Factory installed ABB variable frequency drive

Mechanical Cooling

  • R410A refrigerant (environmentally friendly)
  • High efficiency digital scroll technology 10-100% capacity control
  • Fully interlaced coils
  • High efficiency ECM condenser fans
  • Compressor anti-cycle programming
  • Mechanical gauge connections
  • High & low pressure switches
  • Crankcase heaters Anti-rust, dual sloped condensate drain pan
  • Froststat, all circuits

Electric Heat

High capacity heat for colder climates 3-4 stage control (Std)

Failure/alarm diagnostics

Gas Heating

  • Natural gas or propane furnace
  • Patented Tcore3 combustion control (patent # 8,113,269)
  • High capacity heat for colder climates
  • Minimum 80% thermal efficiency (Std)
  • 2-4 stage control (Std)
  • 409 stainless steel heat exchanger
  • Failure/alarm diagnostics


  • Double wall foam panel construction – R12
  • Hinged access doors with slam latches
  • G90 galvanized steel substrate, 60 gloss finish
  • Convenient single door access panel for all controls, heat and cooling sections
  • 4 point bottom lifting
  • Vertical discharge, roof or pad mounting

6 Files


YDSA Marketing Catalog
Model YDSA Marketing Catalog
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891.7 kB
Comp Edge: P125 Series Built-to-Last Solid Construction
The P125 Series is design engineered for long-lasting operation.
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245.1 kB
Comp Edge: P125 Rooftop Unit
The "Reznor Edge" or advantages in using one of the packaged HVAC units in the Platform 125 series. Each offers different benefits to meet a wide variety of application needs.
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584.2 kB
Comp Edge: Superior Dehumidification with ReHeat Pump™
Advantages of using a ReHeat Pump vs. a hot gas reheat (HGRH) system
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404.7 kB
Energy Edge: Condensing Gas Heating (90%+ Efficient)
No matter what region you are in North America, Heating makes up the majority of the average building energy usage. By using Reznor condensing gas heating equipment (over 90% fuel efficient), you can make a big impact on the overall utility bills.
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404.4 kB
Heating, Cooling, Ventilation & VRF Product Line
Heating, Cooling, Ventilation & VRF Product Line Sheet
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630.7 kB

Technical Data
2 Files

Technical Data

Catalog - Rooftop Units
Rooftop unit catalog for Models YDHA & YDMA
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3.8 MB
Sample Specs - YDSA
Sample specifications for Modle YDSA (Word document)
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50.1 kB

9 Files


Unit Installation Manual - YDHA, YDMA, & YDSA
Installation manual for Platform 125 Models YDHA, YDMA, and YDSA
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8.0 MB
Operation Manual for YDMA, YDHA, YDSA
Operation, maintenance and service manual for Models YDMA, YDHA, & YDSA in Platform 125
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5.2 MB
Parts Manual - Models YDHA, YDMA, & YDSA
Parts manual for P125 series - Models YDHA, YDMA, & YDSA
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9.6 MB
Option - Installation - Roof Curbs Assembly
Instructions for installing roof curb for various models
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1.6 MB
Option - Installation - Weather Hood Assembly
Instructions for installing a weather hood for Models ADF, ADFH, RCB, RDB, RDCB, RDDB, RECB, REDB, RCC, RDC, RDCC, RDDC, RECC, REDC, RPB, RPBL, RBL, YDHA, YDMA, and YDSA
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814.5 kB
Controls - R7DA, YDHA, YDMA, and YDSA models
Controls manual for P125 (YDHA, YDMA, and YDSA) and R7DA models
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1.1 MB
Option - Installation - High-Wind Kit
High-Wind Kit Installation Instructions for P125 series: Models YDHA, YDMA, and YDSA
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2.5 MB
Field Service - Replacement of Discontinued Relays
Installation for kits designed to replace relays no longer available from suppliers. Applies to all Reznor units using obsolete relays.
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340.4 kB
Instructions D'Installation - Modèle YDHA, YDMA, et YDSA
Installation modèles YDHA, YDMA et YDSA
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8.4 MB

Other Files
1 File

Other Files

Warranty Statement
Reznor equipment limited warranty statement
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183.4 kB