Residential Control Systems TR16 Guia de Instalação descarregar pdf (Página 5)

2 Overview of the System

ENV is an energy management system that controls, manages, and monitors all aspect of a

building’s environment. ENV is the first system of its kind to take intelligent climate control

technologies and bring them to the residential and commercial market. ENV uses real-time weather

information and the rules of a sustainable ENVironment to control any device in the building or

mechanical room (regardless of the manufacturer) to balance all aspects of the building’s

ENVironment and create the ideal climate for comfort, human well being, and energy reduction.

System architecture

The ENV software runs on a computer running Microsoft

Windows

™

Vista Business.

The following diagram illustrates a typical installation of an ENV.

1. All devices being monitored or controlled are wired directly into an IO block, which is an A/D

convertor. The wiring to the IO block is low voltage. So, to switch a high voltage device on

and off, a relay must be used. Each IO block has a set of IO points to which the wires

connect. Each point has a unique address within each IO block.

2. The IO blocks are interconnected and daisy chained to the VLINX device which converts a

RS485 serial signal to Ethernet. In this way, the IO blocks are IP addressable and can be

seen from anywhere on the intranet.

3. If a forced air system is to be controlled by ENV, communicating thermostats are used. The

thermostats use four wires from the wall mount into the mechanical room to a control device

that comes with each thermostat. The control device is wired directly to the appropriate air

handler or heat pump. In this manner, the thermostats function as ordinary thermostats.

Each of the thermostats’ control device has a pair of wires that communicate RS 485 and

daisy chain and connect to the VLINX just like the IO block. They can daisey chain through

the IO block but that is not a requirement.

4. The VLINK is connected to a router or to switch within the building. In this way the VLINX is

visible on the intranet.

5. The PC is also connected to the intranet within the building and is able to communicate with

all of the IO blocks and with the thermostats via Ethernet.

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Residential Control Systems TR16 Guia de Instalação Página 5