Coolcentric CDU-AC5 Manual de instalación descargar pdf (Pagina 7)

CDU Installation Guide Page 7

Cooling Distribution Unit

2.1 General

This guide describes the basic Installation, Operation and Maintenance of the Cooling Distribution Unit

(CDU) and contains a detailed explanation covering the Technical Specification, Mode of Operation,

description of the alarms that can be generated and the action to be taken at those alarms, a Spare

Parts List and all relevant Schematic Diagrams.

It is assumed that the people involved with the maintenance of this unit are familiar with basic theory

and practice. Consequently only features that are of particular significance to this unit are identified.

The CDU has been designed to provide close controlled cooling water for IT enclosure ‘Rear Door

Heat Exchangers’ (RDHx’s), with a total maximum cooling capacity of 120 or 150kW.

The process side water loop (referred to as the ‘Secondary Circuit’) is a sealed pressurized system with

the heat extracted from the rear door heat exchangers being rejected to a chilled water circuit.

The chilled water can either be part of the Building Services Chilled Water system or supplied from a

dedicated chiller or cooling tower. This chilled water supply loop (referred to as the ‘Primary Circuit’) is

filtered to 300μ (50mesh) using a filtration unit fitted internally to the cabinet.

Features of the CDU include:

INTRODUCTION

Section 2

Front View

Control Panel

Pump Inverter Drive

Primary Control Valves

(run & standby)

Secondary Pumps

(run & standby)

Plate Heat Exchanger

Primary Flow Meter

Reservoir Tank

Pump Isolation Valves

Controller Display

(user interface)

Lockable Wheels &

Adjustable Plinth

Level Switch

Pump transit bracket

Location of automatic air vents

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Coolcentric CDU-AC5 Manual de instalación Pagina 7