|
|
Intellistat The intelligent thermostat WHY IS THE INTELLISTAT LIKE A GOOD NEWSPAPER ? BECAUSE IT KEEPS YOU INFORMED OF WHAT IS HAPPENING The INTELLISTAT will report to you
it does this using your Building Wiring As the Data Bus WHY IS THE INTELLISTAT BETTER THAN A GOOD NEWSPAPER ? BECAUSE IF YOU DON’T LIKE WHAT YOU READ – YOU CAN REWRITE THE STORY THE WAY YOU WANT IT With the INTELLISTAT set points can be modified to the building operators satisfaction either permanently or temporarily. Deadbands can be widened or narrowed for optimum performance at minimum cost. And all this can be done from your office, be it in the same building , or anywhere in the world via - dial up or internet. UC202-UNIT CONTROLLER * TDC2-TEMPERATURE DISPLAY / CONTROL * TDC3-TEMPERATURE SENSOR The UC202 (Unit Controller) combined with the TDC-2 (Temperature Display/Control) or the TDC3 (Temperature Sensor) form a sub-system in a building-wide setback control system. UC202 is mounted within a heat/cool unit (heat pump or a small packaged heater/ air conditioner) where it closed loop controls the heating and/or cooling. The Unit Controller is hard wired to the wall-mounted TDC2 (or TDC3), which measures room temperature. The TDC2 not only provides user control over the heat/cool unit similar to a conventional wall thermostat, but also provides several important convenience features, including a liquid crystal display (LCD), which shows room and outdoor temperatures, and heating or cooling status. From the point of view of the head-end controller this sub-system appears to be a two-way Responder with DO, DI, Al and AO capabilities. Hardware includes a serial link (to a TDC2 or TDC3), a threshold analog-in port (outside compressor coil temperature), and five digital outputs (24 Vac triacs). Two digital inputs allow some increase in deadband during temporary periods of non-occupancy (special order). The UC202 is powered by 24 Vac (supplied by installer and usually present in the heat/cool unit) and has a two-wire connection to an energized ac power line and equipment ground for PLC communication. When commanded ON via PLC the room temperature is controlled to the set-point temperature. When commanded OFF via PLC the dead band is widened to allow energy savings. The set-point temperature can be changed via PLC.. The space temperature and the Unit Controller status can be reported via PLC to the head end controller. When used with one-way PLC, head-end control is limited to ON and OFF commands. The UC202 can be programmed by setting the positions of switches within the UC202 and TDC2 (or TDC3). The UC202 can be programmed to assume a single digital code or identity (ID) or to assume two sequential IDs in order to enable additional PLC communication by means of a second set of DO, DI, Al and AO. The major operating parameters of the Unit Controller, including both operating mode and setpoint temperature, can be modified using two way power line carrier (PLC). Default values and the operating mode can also be adjusted by a laptop computer or a terminal at the Unit Controller. The switch selections also allow the UC202 control algorithm and the convenience features of the TDC2 to be controlled and/or limited to conform to what is desired by the installer and the building management. The user can be restricted to limited temperature adjustment. Unit controllers can be intermixed in a PLC system with two way and one-way Responders to achieve the most cost-effective solution to a given energy management task. The Unit Controller represents a major step toward distributed intelligence by combining local control of loads with power-line carrier communication. This combination assures continued control of the heat/cool unit even if the head-end control goes down and eliminates the need for running wires. DESCRIPTION The TDC2 is a Temperature Display/Control Unit for the UC202 Unit Controller.. It is mounted on an internal wall and is wired to the UC202. it contains a room-temperature sensor and a liquid-crystal display (LCD) for measuring and displaying the room temperature (temperatures can be displayed in either ¡C or ¡F). Outdoor temperature, setpoint temperature, the fan’s AUTO/ON status and the ON, OFF or OVERRIDE conditions are also displayed on the LCD. Buttons are provided to allow the user to change the room temperature, the FAN condition and the ON/OFF condition . An internal row of switches (DIP switch) allows the installer to select some of the operating parameters of the UC202. The housing has a tamper-resistant feature to prevent the user from changing the performance features. Model TDC2 is intended for use in hotel/motel, school or commercial buildings. It provides a user-friendly interface for model UC202 and gives the user the ability to adjust his room to a comfortable temperature, which he has every right to expect, but still allows the building management to retain the energy cost savings of off-hour temperature setback. TDC3 provides only the room-temperature sensor. FEATURES of TDC2 * Easy to install
|
||||||||||||
and