Hitachi PSC-A1T - Introduction

2 Control solutions
Introduction
TCGB0106 rev.0 - 12/2014
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2.1 Introduction
The air conditioning controls are divided into four types depending on the different methods of controlling units:
Control devices used for air conditioning control are classied in four types depending on their type of control.
• Individual remote controls: which control each unit separately.
• Centralised remote controls: which centralise the control of several units at one device in the ofce.
• Building air conditioning control (CSNET WEB and CSNET Manager): which centralises the control of indoor units of
all the building.
• Intelligent building (BMS - Building Management System): which allow that intelligent building controller interact with
HITACHI air conditioning systems.
NOTE
The Building Management Systems (ELB) mentioned on this manual are also commonly known as Building Automati-
zation Systems (BAS).
Control hierarchy