Smart™ Diffuser Applications
GENERAL SYSTEM APPLICATIONS

APPLICATIONS

SMART DIFFUSERS are applied as individual "problem-solvers," or to the entire system to provide superior space temperature control.

The SCAH adjustable feature of the warm air discharge opening reduces, eliminates or makes manageable the stratification of warm air along the ceiling, which is the major problem of reduced volume heating systems.

The SMART DIFFUSER is a sub-zone control diffuser. A primary space thermostat must first select the operating mode so the SMART DIFFUSER can react with the proper control function.

Exterior space must be served with both cooling and heating while the interior requires cooling only since no heat loss exists.

A single HVAC or heat pump unit provides either cooling or heating. SMART DIFFUSERS control the individual space temperatures by varying the volume of the supply air. Spaces requiring cooling during the heating cycle must control to the minimum adjusted volume. The interior space, representing a continuous cooling condition, may be adversely affected during prolonged heating cycles.

One or more HVAC or heat pumps may be combined with the interior cooling unit, or a single cooling unit may be applied with one or more independent heat sources to provide both cooling and heating.

The interior space is generally considered a single temperature control zone since exterior load conditions have little or no effect. Specific areas in which lighting and occupancy are intermittent require individual SMART DIFFUSER room temperature control.

Conference rooms require special consideration. A cooling load will exist under all "in use" conditions. Exterior locations will require "minimal use" heating similar to exterior offices.

The major SMART DIFFUSER system design consideration is to provide larger primary cooling/heating exposure cycle control zones and one or more large interior VAV cooling zones. Space thermostats are located in corner offices, or areas in which the "worst condition" exists, to change the zone operating mode between cooling and heating. SMART DIFFUSERS provide individual room temperature control based on the primary control cycle. SMART DIFFUSERS are applied to individual interior spaces as required.

SMART DIFFUSERS offer a completely efficient, cost-effective, maintenance-free means to control the flow of conditioned air without wall thermostats, duct thermostats, motorized dampers, control wiring, piping, or added system pressure.

Three fundamentally different SMART DIFFUSERS are available:

• Square VAV room temperature control
  
• Linear VAV room temperature control
  
• Linear directional flow control

The Square VAV room temperature control diffuser is ideally suited to high demand volume and short horizontal throw applications. Heating control is provided by limiting the warm air supply volume to the higher of: 1) maximum heating demand 2) minimum ventilation rate.

The Linear VAV room temperature control diffuser incorporates directional flow control to provide horizontal VAV cooling and vertical VAV heating. The discharge openings are automatically varied between the maximum demand and the minimum ventilation volume by changes in the room temperature. The control mode is automatically selected by the temperature of the supply air. The dynamic changes in individual space temperatures are automatically accommodated to provide individual space temperature control.

The Linear directional control diffuser automatically changes from a horizontal cool air to a vertical warm air discharge. The discharge openings are uniquely different and allow the heating characteristics to be adjusted independently of the cooling.

The hot ceiling/cold floor problems are eliminated. The imbalance of reduced volume/multiple diffuser systems is eliminated.

The application of SMART DIFFUSERS simplify the design and installation of environmental control systems.

SCVH square SMART DIFFUSERS are applied to provide VAV cooling/VAV heating control where the application requires a high volume/short throw.

SCAH square SMART DIFFUSERS are applied to provide VAV cooling/constant volume heating control where the application requires a high volume/short throw.

SC square SMART DIFFUSERS are applied to VAV cooling room temperature control systems requiring high volume/short throw.

VACH linear SMART DIFFUSERS are applied to provide horizontal VAV cooling/ vertical VAV heating room temperature control for exterior spaces.

VAC linear SMART DIFFUSERS are applied to VAV cooling room temperature control systems.

LAD linear SMART DIFFUSERS are applied to provide horizontal cool air/vertical warm air diffusion for exterior spaces when room temperature control is not required.