M3642BL2-ST2 - Module, Blower, Standard Control, Single Speed, 208/230V only

Effective July 29, 2026, Unico has permanently discontinued the ST2 blower line and no longer accepts new orders.

M3642BL2-ST2 — a single-speed standard-control blower module (208/230V, 3–3.5 ton). Same-size replacement is M3642BL2-EC2.

Key features

• Service parts for existing ST2 units — motors, blower wheels, and control boxes — remain available.
• Unico M3642BL2-ST2 Blower Module, 3-3.5 Ton, PSC, 230V.
• This is the 3 to 3.5 ton single speed PSC 208/230v blower module.
• 3-3.5 Ton Modular Unit (FCU) All TXVs are R410-A with Chatleff Fitting.
• The Unico System modular blowers are designed for use with the Unico System small-duct high-velocity (SDHV) system.
• The blowers exceed the U.S. Department of Energy requirements for SDHV systems requiring a minimum external static pressure of 1.2 in of water (0.3 kPa) at the rated airflow when installed with the compatible Unico cooling module.

Specifications

Documents

• M3642BL2-ST2 Dimensional Data (PDF)
• Submittal Sheet (PDF)
• M Series Blower Module Specifications (PDF)
• Technote 115 — Air Cleaning and Filtering Devices (PDF)

Ships in 42x16x20 in pkg; 73 lb