Trox VFL - User Manual

Sticker showing volume
flow rates
Set the volume flow rate
Insert
VFL-ED for square or
rectangular ducting (see
accessory options p. 8-10)
–
Volume Flow Limiters
Type VFL
Aerodynamic damper blade
X
XVFL
04/2014 US K5 – 2.1 – 1
Volume flow limiter for insertion into ducting
Circular, mechanical self-powered controllers for insertion into ducting,
for the quick and easy balancing of constant volume flow rates in ventilation
and air conditioning systems
Unique damper blade edge for acoustic optimization
Simple and quick commissioning on site
Range of volume flow rate setpoints for each nominal size
Precise and simple setting of volume flow rates using a scale
Best accuracy among controllers for insertion
Suitable for low airflow velocities from 2.6 ft/s
Any installation orientation; maintenance-free
Volume flow limiter accessories for square or
rectangular ducting
Accessories to the VFL now include
Square or rectangular duct adaptor for exhaust or supply orientation (p. 8)
Exhaust register for in-wall installation (p. 9)
Exhaust register with fire damper for in-wall installation (p. 10)

Summary

Volume Flow Limiter for Insertion into Ducting

Description and Application

Details the VFL's function, self-powered operation, and use in HVAC systems for balancing volume flow rates.

Functionality and Commissioning

Explains the VFL's aerodynamic operation and efficient commissioning process for HVAC balancing.

Volume Flow Limiter Accessories

Square or Rectangular Duct Adaptors

Details adaptors (VFL-ED/SD) for square/rectangular ducts, including features, materials, and dimensions.

Exhaust Registers

Describes registers (VFL-ER/SR) for in-wall installation, their features, materials, and dimensions.

Exhaust Registers with Fire Damper

Covers registers with UL listed fire dampers, their features, installation, and dimensions.

Installation Notes

Installation Procedure

Covers setting the flow rate, inserting the limiter, and sealing the slot for optimal performance.

Installation Location Marking

Describes using stickers to identify the installed limiter's position on the duct exterior.

Quick Sizing

Volume Flow Rate Ranges and Upstream Conditions

Provides flow rate ranges and discusses upstream conditions affecting measurement accuracy.

Dimensions and Weight

Presents physical dimensions, weight data for VFL units, and their installation example.

Specification Text and Order Code

Product Specifications

Summarizes general properties, special features, materials, technical data, and sizing information.

Order Code Configuration

Guides selection of type, size, adaptor, duct connection, fire damper, grille, and setpoint.

Trox VFL Specifications

General

Brand	Trox
Model	VFL
Category	Fan
Language	English