TSK090A4S000000 — Trane Precedent 7.5 Ton Packaged Rooftop Unit, 460V 3-Phase, R-454B, 18 kW Heat, Options Modules + Motorized Damper (Replaces TSJ090A4S00)

Trane 7.5 Ton Rooftop Unit — Precedent TSK090A4, R-454B, 460V 3-Phase, 18 kW Heat

This Trane 7.5 ton rooftop unit is the Trane Precedent TSK090A4S000000, the current R-454B replacement for the discontinued TSJ090A4S00. It is supplied as a complete package: the 7.5 ton 460/3/60 packaged cooling unit, an 18 kW 460 V electric heater (FIAEHTB418), the Symbio Indoor Options Module (FIAOPTN001), the Symbio Fresh Air Options Module (FIAOPTN002) and a 0-50% motorized outside-air damper (FIADMPR102).

What’s included

• TSK090A4S000000: Trane Precedent 7.5 ton packaged rooftop unit, cooling with electric heat, 460/3/60, R-454B
• FIAEHTB418: 18 kW, 460 V electric heater for Precedent B cabinet
• FIAOPTN001: Symbio Indoor Options Module
• FIAOPTN002: Symbio Fresh Air Options Module
• FIADMPR102: 0-50% motorized outside-air damper, Precedent B/C cabinet

Old model to new model

Trane replaced the R-410A Precedent TSJ090A4S00 with the R-454B TSK090A4S000000. The nominal capacity (7.5 tons), voltage (460 V three-phase) and Precedent cabinet family stay the same, so this Trane 7.5 ton rooftop unit is the direct replacement on most TSJ090 jobs. R-454B is the low-GWP A2L refrigerant required for new equipment under the EPA AIM Act. Verify curb, duct openings and electrical against the current Trane submittal before ordering.

Where a Trane 7.5 ton rooftop unit is used

A 7.5 ton Precedent unit is a common choice for retail stores, restaurants, offices, schools and light commercial buildings. The 18 kW heater provides electric heat without a gas connection, and the motorized damper with the fresh-air options module brings in code-required ventilation air controlled by the Trane Symbio 700 unit controller.

Shopping other equipment? See our commercial A/C systems, condensing units, compressors and thermostats.

Before you order

1. Confirm 460 V three-phase power at the roof.
2. Match the existing curb and supply/return openings, or order a curb adapter.
3. Confirm the heater kW and ventilation requirements on the project schedule.
4. Call (305) 850-6693 so we can confirm the configuration before the order is released.

Performance data, dimensions and wiring are published in Trane’s literature for Trane commercial packaged units and split systems.

Frequently asked questions

What replaces the Trane TSJ090A4S00?

The Trane Precedent TSK090A4S000000, the R-454B version of the same 7.5 ton, 460 V three-phase unit.

Does this package include electric heat?

Yes. The FIAEHTB418 18 kW, 460 V electric heater is included.

What refrigerant does it use?

R-454B, the low-GWP refrigerant that replaces R-410A in new commercial equipment.

Is a curb included?

No. Roof curbs and curb adapters are sold separately. Call us to match your existing curb.

How does it ship?

Orders are prepared and shipped by LTL freight within 5–7 business days. A licensed HVAC contractor should install it.

Why buy from Cedars HVAC

• Genuine new Trane equipment with the factory warranty
• Old-to-new model cross-reference checked before your order ships
• Real HVAC expertise. Call (305) 850-6693 to confirm voltage, cabinet and accessories before you order.