MODEL AAFS – Furneco

MODEL AAFS ADJUSTABLE AIR FLOW PADDLE SWITCH

The Dwyer Model AAFS is a field-adjustable paddle switch used for air flow proving in HVAC systems and monitoring fume hoods. It features a stainless steel vane that can be trimmed for various duct sizes and an internal screw for adjusting sensitivity between 200 and 1800 FPM. It is capable of detecting a wide range of air velocities with minimal user calibration. Quality features include a stainless steel vane, galvanized steel base, and ABS enclosure. Product Application is for Air flow proving in HVAC systems.

BENEFITS/FEATURES

High Current Contact: The 15 A rated SPDT contact allows for direct switching of higher current loads.
Durable Construction: Features a stainless steel vane and galvanized steel base for reliable performance in demanding environments.
Minimal Calibration: Capable of detecting a wide range of air velocities with minimal user calibration required.
Easy Installation: Mounting is fast and simple, requiring minimal effort.

Technical Sheets

Instruction Manual
Catalog Page

Specifications

MODEL AAFS ADJUSTABLE AIR FLOW PADDLE SWITCH

Service Air and compatible gas.	Wetted Materials Vane: SS; Lever: Brass; Base: Galvanized steel.
Housing ABS.	Temperature Limits Ambient: -40 to 180°F (-40 to 85°C); Process: -14 to 185°F (-10 to 85°C).
Humidity Limits 10 to 90%, noncondensing.	Switch Type SPDT.
Electrical Rating 15(8) A @ 250 VAC.	Electrical Connection Screw terminal with M18 x 1.5 cable gland.
Process Connection Flange.	Mounting Orientation Horizontal duct flow.
Set Point Internal screw.	Enclosure Rating IP65.
Weight 13.6 oz (380 g).

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