Dantherm HEX 30 Manual de usuario

HEX 30

Service manual

No. 061629 • rev. 1.0 • 25.02.2008

Der tages forbehold for trykfejl og ændringer

Dantherm can accept no responsibility for possible errors and changes

Irrtümer und Änderungen vorbehalten

Dantherm n’assume aucune responsabilité pour erreurs et modifications éventuelles

061629 • Version 1.0 • 25.02.2009

Introduction

Overview

Introduction This is the service manual for the Dantherm Air Handling HEX 30 unit.

The table of content below gives you an overview of the main sections. Please see the

complete table of content for further information about the sections.

Serial number This manual covers units with serial numbers equal or higher than:

xxxxxx1131132

Table of contents This service manual covers the following main topics:

Topic See page

Table of content, complete next page

General information 5

Product description 6

Mounting and installation 11

Service guide 12

Technical information 23

Index 26

Table of content

Introduction This is the complete table of content covering all sections in this service manual.

Each main section will begin with an introduction including a separate table of content

covering the exact section.

Table of content This service manual covers the following topics:

Topic See page

Introduction 3

Table of content 4

General information 5

Product description 6

Description of the HEX 30 and its parts 7

Control board 8

Functional description 9

Mounting and installation 11

Service guide 12

Preventive maintenance 13

Spare part list 14

How to replace the heat exchanger 15

How to replace the internal fan 16

How to replace the external fan 18

How to replace the control panel 20

Fault finding guide 21

Service agreement 22

Technical information 23

Technical data and dimensions 24

Wiring diagram 25

Index 26

General information

Introduction This section gives you the general information about this service manual and about the unit.

Manual, part no. Part number of this service manual is 061629.

Target group The target group for this service manual are the technicians who install and maintain

the HEX 30 unit as well as the users of the unit.

from Dantherm Air Handling.

Reservations Dantherm Air Handling reserves the right to make changes and improvements to the

product and the service manual at any time without prior notice or obligation.

Dantherm Air Handling A/S, Marienlystvej 65, DK-7800 Skive hereby declare that the

units mentioned below:

EC-Declaration of

Conformity 352909 HEX 30

are in conformity with the following directives:

98/37/EEC Directive on the safety of machines

73/23/EEC Low Voltage Directive

2004/108/EF EU EMC Directive (December 2004)

94/62/EC Packaging Directive

- and are manufactured in conformity with the following harmonized standards:

EN 12100 Machine safety

EN 60 335-1 Low Voltage

EN 60 335-2 Low Voltage

EN 61 000-6-2 Immunity: 2001

EN 61 000-6-3 Emission: 2001

Skive, 14.01.2009

Recycling The unit is designed to last for many years. When the time comes for the unit to be re-

cycled, the unit should be recycled according to national rules and procedures to pro-

tect the environment.

061629 • Version 1.0 • 25.02.2009

Product description

Overview

Introduction This section will give you a description of the HEX 30 and its functionality.

Content This section covers the following topics:

Topic See page

Description of the HEX 30 and its parts next page

Control board 8

Functional description 9

Description of the HEX 30 and its parts

Usage of HEX 30 The HEX 30 is used for ventilation of enclosures with electronics.

The unit cools down the air in the enclosure by letting the cold outdoor air cool down

the air flow from inside the enclosure. The cooling takes place in a heat exchanger.

Illustration, inter-

nal This drawing illustrates the unit with its dif-

ferent parts, visible from the internal:

Parts This table gives an overview of the main parts of the unit:

No. Part No. Part

cInternal fan fExternal fan

dControl board with

temperature sensor gDrain hole (at the back of the unit)

eHeat exchanger - -

Cabinet The cabinet is made of made of alu zinc sheet steel.

Heat exchanger The heat exchanger ensures that outdoor air is used to cool down warm internal air,

when both air flows passes each other.

Fans There are two fans in the unit. The purpose of the fans is described below.

Internal fan

The internal fan draws air from the enclosure through the heat exchanger where the

heat is removed.

External fan

The external fan draws fresh outdoor air through the heat exchanger to cool down the

internal air.

061629 • Version 1.0 • 25.02.2009

Drain The drain is placed in the bottom of the cabinet, where water is let out of the unit.

Control board

The HEX 30 is controlled via a controller that controls the speed

of the fans.

Control system

The key features of the controller are:

•Onboard temperature sensor (NTC type)

•Microprocessor based control in accordance with prese-

lected strategy

•Minor and major alarm output

•Polarity protection

•Input voltage ÷ 40 V DC to -60 V DC

•Both alarm outputs are “Normally closed” (NC)

•Minor alarm is high temperature inside the cabinet >60 °C

•Major alarm is when the internal, external or the tempera-

ture sensor fails

Part Function

RS 232 To be used for factory testing or to get further information from

the controller

Alarm LED Gives signal about alarms:

•Flashing = minor alarm (high temperature)

•Constant = major alarm (fan or sensor failure)

Both alarms can be monitored (potential free contact) on the

power/alarm plug.

See more about fault finding in section “Fault finding guide”,

page 21

Sub-D 9 pin, male Power and alarm plug

Pin designation:

1 N/C

2 + 48 V DC

3 + 48 V DC

4 Minor alarm +

5 Major alarm +

6 0 V DC

7 0 V DC

8 Minor alarm ÷

9 Major alarm ÷

Functional description

Important The ventilation system should operate continuously!

It is not advisable to stop ventilation.

Function The HEX 30 is designed to control the internal temperature of a universal shelter or

room with respect to climate, moist and airborne.

The HEX 30 removes excess heat from electronic equipment and is especially suited in

applications where the equipment requires to be maintained within defined temperature

limits to achieve optimum performance and to maximize component lifetime.

Two separate air

flows The two air flows (internal/external) are to-

tally separated. The external air is only

used to cool down the internal air via the

heat exchanger. The air flows are never

mixed.

This illustrates the air flow of the HEX 30:

Internal air flow The warm internal air is sucked from the enclosure into the internal fan at the top of the

HEX 30 and let through the heat exchanger, where it is cooled down.

After the cooling in the heat exchanger, the air is let back into the enclosure.

External air flow The cold external air is sucked into the external fan at the bottom of the HEX 30 and let

through the heat exchanger, where it is cooling down the internal air.

After having passed through the heat exchanger, the air is let back to the external envi-

ronment at the top of the unit.

061629 • Version 1.0 • 25.02.2009

Control strategy The control board controls the fans according to the temperature of air in the top cabi-

net.

The higher temperature the higher fan speed.

Continued overleaf

Functional description, continued

Internal fan strat-

egy See the speed of the internal fan according to different temperatures on this drawing:

Top temperature inside the cabine

External fan strat-

egy See the speed of the external fan according to different temperatures on this drawing:

Top temperature inside the cabine

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