DES ‐ Dryer Exhaust System

The Dryer Exhaust System (DES) maintains a constant pressure in the clothes dryer exhaust system. Designed with EC-Flow Technology™, the DES takes advantage of US Draft Co. bi-directional pressure transducer and proprietary PID technology to rapidly respond to varying manifold pressures due to load changes in the clothes dryer exhaust system. Utilizing the Truline™ MEF Multi-use Exhaust Fan and a VIC or VRX series control, the system can receive a start signal through a current sensing relay or may run continuously. The DES meets all requirements for the National & International Fuel Gas Codes and the Uniform & International Mechanical Codes.

Application
Type I and Type II clothes dryer exhaust
Multi-family building exhaust systems
Construction
The housing and dynamically balanced backward inclined or backward curved impeller is constructed in 5052 aluminum


EC-Flow Technology™

EC-Flow is a proprietary algorithm developed by US Draft Co in an effort to improve upon the current PID technology used for controlling vent pressures. EC-Flow utilizes predictive algorithms to achieve set-point faster during transient operation, and maintain smooth operation during steady state operation. EC-Flow is designed to operate electronically commutated motors, VFD’s and damper actuators.


VIC Controls

VIC – Constant Pressure Controller

VIC – Constant Pressure Controller

Application
Mechanical draft systems serving all types of chimneys and gas vents, up to 6 appliances with more available
Supply air for fossil-fuel fired heating appliances
General make-up air
Construction
A NEMA 1 housing constructed of mild steel painted to prevent corrosion


VRX Controls

VRX – Constant Pressure Controller

VRX – Constant Pressure Controller

Application
Supply air for fossil-fuel fired heating appliances
General make-up air
Construction
A NEMA 1 housing constructed of polycarbonate plastic to prevent corrosion