Biddle NOZ Series Instructions for use

User’s and Installer’s Guide

indirect fired air heater

Model NOZ

Version of Guide: 1.3 GB

All the information and drawings in this manual are the property of Biddle and may not be used (other than for the

actual operation of the device), photocopied, duplicated, translated and/or be brought to the attention of third

parties without Biddle’s prior written permission.

The name Biddle is a registered trademark.

Warranty and Liability

Please refer to Biddle’s Terms of Sales and Delivery for warranty and liability conditions.

Biddle excludes liability for consequential loss at all times and under all circumstances.

Liability for the contents of this manual

However much care might have been taken in ensuring the correctness and, where necessary, completeness of the

description of the relevant parts, Biddle disclaims all liability for damage resulting from any inaccuracies and/or

deficiencies in this manual.

Should you detect any errors or ambiguities in this manual then we would be pleased to hear from you: it helps us

to improve our documentation even further.

Biddle retains the right to change the specifications stated in this manual.

For more information

If you have any comments or questions about specific topics relating to this product, please do not hesitate to

contact Biddle.

Address for the UK:

Biddle Air Systems Ltd.

St. Mary’s Road

Nuneaton

Warwickshire CV11 5AU

United Kingdom

tel: 024 7638 4233

fax: 024 7637 3621

e-mail: sales@biddle-air.co.uk

internet: www.biddle-air.com

Address for other countries:

Biddle bv

P. O. B o x 1 5

NL-9288 ZG Kootstertille

The Netherlands

tel: +31 512 33 55 55

fax: +31 512 33 55 54

e-mail: export@biddle.nl

internet: www.biddle.info

USER’SAND INSTALLER’SGUIDE

Version: 1.3 (02-10-2002) 3

. . . Table of contents

1 Introduction 5

1.1 About this guide 5

1.2 How to use this guide 5

1.2.1 For whom is this guide intended? 5

1.2.2 Marginal symbols 5

1.2.3 Pictograms on the device and in the guide 6

1.2.4 Related documentation 6

1.3 About the device 7

1.3.1 Applications 7

1.3.2 Mode of operation 7

1.3.3 Types available 7

1.3.4 Type plate 7

1.3.5 Available accessories 7

1.4 Safety instructions 9

2 Installation 11

2.1 Delivery check 11

2.2 Preparations for installation 11

2.2.1 Placement of the device 11

2.2.2 Operation 12

2.2.3 Water connections 12

2.2.4 Fitting the roof cowl 13

2.3 Installation of the device 13

2.4 Installation of accessories 14

2.4.1 Waterside control 15

2.4.2 Filter section 16

2.4.3 Damper section 16

2.4.4 Roof cowl 17

2.5 Installation of the control unit 17

2.6 Function check 18

2.7 Preparations for use 18

2.7.1 Controlling the discharge direction 18

3 Operation 19

3.1 Introduction 19

3.2 User actions 19

3.2.1 Switching the device on/off 19

3.2.2 Regulating the air displacement 19

4 Maintenance 21

4.1 Introduction 21

4.2 Safety instructions 21

4.3 Cleaning the filter 21

AIR HEATER

4.4 Troubleshooting 22

4.4.1 Device does not work 22

4.4.2 Device does not heat or heats insufficiently 22

5Service 23

5.1 Introduction 23

5.2 Safety instructions 23

5.3 Replacing the fan 23

5.4 Replacing the heat exchanger 24

5.5 Replacing a nozzle 25

5.6 Replacing the main isolating switch 26

Index 27

EC declaration of agreement 28

USER’SAND INSTALLER’SGUIDE INTRODUCTION

Version: 1.3 (02-10-2002) 5

1. . Introduction

1.1 About this guide

This guide describes the features and correct use of the air

heater. Installation and repair are also described.

The guide contains important information for the correct

functioning, operation and maintenance of the device. This

document also contains important instructions for preventing

potential accidents and damage while the device is in

operation and for ensuring that the device functions as safely

as possible.

For that reason, please read through this guide thoroughly

before putting the device into operation. Familiarise yourself

with the operation of the device and follow the instructions

carefully.

1.2 How to use this guide

If you are unfamiliar with the air heater then please read the

chapters in sequence. If you are familiar with the device then

you can use the guide as a ‘ready reference’. You can easily find

the information you are looking for by using the table of

contents and the list of keywords.

1.2.1 For whom is this guide intended?

For those who are actually operating the device, Chapters

3 Operation and 4 Maintenance are important.

For the installer the other chapters are also important.

1.2.2 Marginal symbols

In this guide the following marginal symbols are used:

Note:

nDraws your attention to an important part of the text.

Read this part of the text carefully.

INTRODUCTION AIR HEATER

Caution:

cIf you do not perform this procedure or action correctly you

can damage the device.

So follow the instructions carefully.

Warning:

wIf you do not perform this procedure or action

correctly you can cause bodily injury and/or damage.

So follow the instructions carefully.

Danger:

dThis indicates actions which are not permitted.

Ignoring this warning can lead to serious damage or

accidents which may involve bodily injury.

The action concerned may only be performed by

qualified technical staff when carrying out

maintenance or repair.

1.2.3 Pictograms on the device and in the guide

The pictograms in Table 1-1 refer to possible risks and/or

dangers. You will find these pictograms in the text when risky

actions are being discussed. The same pictograms will also be

found on the device.

1.2.4 Related documentation

In addition to this guide the following documents are supplied

with the device:

• electrical wiring diagram.

Table 1-1 Pictograms

PICTOGRAM DESCRIPTION

WARNING: You are entering an area which contains ‘live’ components.

Accessible to qualified maintenance staff only.

Caution is urged.

WARNING: This surface or part can be hot. There is a risk of burns on

contact.

USER’SAND INSTALLER’SGUIDE INTRODUCTION

Version: 1.3 (02-10-2002) 7

1.3 About the device

1.3.1 Applications

The air heater is intended for the heating of large, open

spaces. The device is placed at the top of the space concerned

(freely suspended).

1.3.2 Mode of operation

The device blows currents of warm air downwards. The air

flow rate ensures that the warm air is spread over a large area.

1.3.3 Types available

The table shows an overview of the types of devices available.

The type code is composed by selecting one option from each

column. For example, the elements can be combined to form

the type code NOZ 25-W3-D. This code will be found on the

type plate (see section 1.3.4).

Every combination can be supplied, with the exception of the

combination NOZ 50 with supply voltage E.

1.3.4 Type plate

You will find the type plate behind the cover of the isolating

switch, and above the isolating switch. The ‘type’ line shows

the full type code (required when, for example, ordering

parts).

1.3.5 Available accessories

• suspension frame with anti-vibration mountings;

• control switch: a switch with 2 or 5 speed positions and

2 free contacts to which, for example, a room thermostat

or timeswitch can be connected;

Table 1-2 Types available

SIZE HEATING MEDIUM SUPPLY VOLTAGE

NOZ 25 W2 (water; element has 2

rows)

E (230 V AC, 50 Hz)

NOZ 50 W3 (water; element has 3

rows)

D (400 V AC, 50 Hz)

A (no heating)

Type NOZ 25-W2-E

Code - U 230 V 1N~ 50 Hz

Biddle bv

Markowei 4

NL-9288 HA Kootstertille Nº 205010/1-1 00-01 I

max

L1 2.7 A

max

L2 -

M 50 kg I

max

L3 -

Medium LPHW P

motor

0.59 kW

max

1400 kPa P

heating

INTRODUCTION AIR HEATER

•watersidecontrol;

• room thermostat;

• frost protection thermostat;

• set of nozzle caps.

Ventilation accessories:

• roof cowl;

• interconnecting ducts;

• filter module (G2);

• damper module;

•dampermotor.

USER’SAND INSTALLER’SGUIDE INTRODUCTION

Version: 1.3 (02-10-2002) 9

1.4 Safety instructions

Caution:

cThe following instructions are essential for the safe use of the

device:

• Do not insert any objects into the suction openings or the

nozzles.

• Never block the suction openings or the nozzles.

You are, however, allowed to cover a maximum of 2 of the

nozzles with the caps provided.

• During use the upper surface of the device can become

hot.

• Mount the device at least 3.5 m above the floor. It should

not be possible to reach the nozzles without the use of

mechanical aids.

Warning:

wThe following instructions are essential for working

safely on the device (for installation, maintenance or

repair).

Before opening the device:

• Switch the device off with the control switch.

• The heat exchanger contains water at a temperature of

anything up to 120 °C. Allow the device to cool before

starting work in the vicinity of the heat exchanger.

• Isolate the device from the mains by setting the isolating

switch to the zero position.

• Wait until the fan has stopped.

• If you are going to perform maintenance or repairs on the

electrical parts, switch the unit off at the mains.

INTRODUCTION AIR HEATER

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