HOW IT WORKS

Room temperature control in cooling is achieved from a small amount of supply air which passes through an orifice in the diffusion disc. The thermal control actuator senses the air induced past it and varies the position of the diffusion disc (immediately above it). The discharge opening is varied and results in the varying of the supply air volume for cooling.

 

 

 

 

 

OPERATION

The SC “Smart” diffuser is a single function device. It is powered by a single thermostatic actuator to provide VAV room temperature control for cooling. As room temperature increases above its set-point thermal actuator # 3 will sense and respond to the induced room air temperature. The thermal actuator will react to the warming room temperature by extending an internal piston allowing the diffusion disc to open. The increased diffusion area allows more cool supply air to be delivered into the room. As the room temperature decreases the opening of the diffusion disc is reduced until the room temperature reaches the desired set-point.

When applied to interior spaces, or hot zones such as those created by the excess heat from computers and office equipment, individual VAV cooling provides the ultimate in room temperature control when the supply air is cool.

FACE PANEL REMOVAL

The solid face panel is held in place by four spring clips. To remove the face panel for room temperature adjustments, approach panel from the induction trough side (the rectangle opening) reach above the panel on both sides with your forefingers until you are able to place your forefingers behind the spring clips. Using your thumbs on the front edge of the panel push the panel back or away from you while pulling the spring clips forward or toward you with your forefingers. Lower the panel and pull forward to disconnect the panel from the rear spring clips. When reattaching face panel the induction trough must be positioned directly opposite of induction wing.

TEMPERATURE ADJUST

Factory set-point approximately 74 degrees. For cooler room temperature, turn room actuator clockwise. For warmer room temperature, turn room actuator counter-clockwise. Determine room temperature set-point by aligning end of the actuator with the indicators on the temperature scale. Each full rotation or each indicator on the temperature scale equals plus or minus 2 degrees. For 74 degree factory set-point, turn actuator clockwise until stop, then turn counter-clockwise 3 full turns.