Daikin EWAD TZ-B Operation Manual

Also see for EWAD TZ: Installation, operation and maintenance Installation, operation and maintenance manual

Contents

Daikin EWAD TZ-B Operation Manual Manual pdf 13 page image

Air and Water cooled inverter chillers and heat pumpEWAD TZ - EWAD TZ B - EWWD VZAir and Water cooled inverter chillersand heat pumpD-EOMZC00105-17ENOperation Manual13/842 GENERAL DESCRIPTION2.1 Basic InformationMicrotech® III is a system for controlling single or dual-circuit air/water-cooled liquid chillers. Microtech® IIIcontrols compressor start-up necessary to maintain the desired heat exchanger leaving water temperature. Ineach unit mode it controls the operation of the condensing devices to maintain the proper condensationprocess in each circuit.Safety devices are constantly monitored by Microtech® III to ensure their safe operation. Microtech® III alsogives access to a Test routine covering all inputs and outputs. All Microtech® III controls can work inaccordance with three independent modes: Local mode: the machine is controlled by commands from the user interface. Remote mode: the machine is controlled by remote contacts (volt-free contacts).Network mode: the machine is controlled by commands from a BAS system. In this case, a data communicationcable is used to connect the unit to the BAS.When the Microtech® III system operates autonomously (Local or Remote mode) it retains all of its own controlcapabilities but does not offer any of the features of the Network mode. In this case monitoring of the unitoperational data is still allowed.2.2 Abbreviations usedIn this manual, the refrigeration circuits are called circuit #1 and circuit #2. The compressor in circuit #1 islabelled Cmp1. The other in circuit #2 is labelled Cmp2. The following abbreviations are used:A/C Air CooledCEWT Condenser Entering Water TemperatureCLWT Condenser Leaving Water TemperatureCP Condensing PressureCSRT Condensing Saturated Refrigerant TemperatureDSH Discharge SuperheatDT Discharge TemperatureE/M Energy Meter ModuleEEWT Evaporator Entering Water TemperatureELWT Evaporator Leaving Water TemperatureEP Evaporating PressureESRT Evaporating Saturated Refrigerant TemperatureEXV Electronic Expansion ValveHMI Human Machine InterfaceMOP Maximum operating pressureSSH Suction SuperHeatST Suction TemperatureUC Unit controller (Microtech III)W/C Water Cooled2.3 Controller Operating LimitsOperation (IEC 721-3-3): Temperature -40...+70 °C Restriction LCD -20… +60 °C Restriction Process-Bus -25….+70 °C Humidity < 90 % r.h (no condensation) Air pressure min. 700 hPa, corresponding to max. 3,000 m above sea levelTransport (IEC 721-3-2): Temperature -40...+70 °C Humidity < 95 % r.h (no condensation)