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TL

Linear Therma-Fuser (TL)

The Acutherm TL is a linear, thermally powered VAV diffuser that combines a sleek architectural profile with built-in temperature control. Extruded aluminum construction, integral thermostats, and modulating blades deliver quiet, proportional airflow and consistent Coanda effect along the ceiling — all without external wiring or pneumatics.


Description

Product Model TL Linear Therma-Fuser Diffuser Info:

  • Model: TL — Linear Therma-Fuser diffuser
  • Types: TL-C (VAV cooling only), TL-CW (VAV cooling with warm-up), TL-D (manual blades), TL-RAD (return air, ducted), TL-RAP (return air, plenum)
  • Nominal Lengths: 24″, 36″, 48″, 60″ (metric lengths available)
  • Slots: 1-slot, 2-slot, or 4-slot
  • Blow Direction: 1-way or 2-way linear

Features

  • Sleek, slim linear profile with extruded aluminum construction and powder-coated visible surfaces.
  • Precise damper and diffusion geometry for strong Coanda effect and no dumping at turndown.
  • Continuous room-air sampling over the thermostat for accurate control across the full VAV range.
  • Thermally powered “green VAV” — no local electrical or pneumatic power required.
  • Low maintenance with a 10-year manufacturer warranty.

Options

  • Remote Adjust: DA1 or DA1M (1–2 slot), DA2 or DA2M (4-slot) Digital Wall Adjuster; WA1M / WA2M Wireless Wall Adjuster
  • Insulation: I — internal ½″ fiber-free foam lining
  • Sensor: AS — output for DSMC or 3rd-party control/monitoring
  • Ends: TEG (reveal) or MP (thin tile) end treatments

Accessories

  • Frames: AC-TL-HCF (hard ceiling frame), AC-TL-TEG1 (tegular 9/16″ T-bar, used with TEG end angles)

TL diffusers are supplied as complete linear VAV terminals with integrated thermostat/actuator and venturi induction. They are intended to replace portions of ceiling panels and are not designed to straddle T-bar grid.


Quick Specs

Lengths24″, 36″, 48″, 60″
Slots1, 2, or 4; 1-way or 2-way discharge
ActuationThermally powered wax actuator
Setpoint RangeAdjustable 70–78 °F (factory 74 °F)
Static Pressure0.05–0.25 in. wg
ConstructionExtruded aluminum diffuser & blades; 24-gauge galvanized steel plenum
Warranty10 Years

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