A.O. Smith ADM - 40 Troubleshooting guide

Innovation has a name.

Commercial Atmospheric

Water Heater

ADM - 40/50/60/80/90/115

ADMP

Installation, User and Service

Manual

0311812 2718-ChangesReserved.

A.O. Smith UK, Unit B8 Amstrong Mall,

Southwood Business Park, Farnborough, Hampshire GU14 0NR

www.aosmith.co.uk

“A.O. Smith Water Heaters” is a trading name of Advance Services (Sales) Ltd. Reg.

your installer

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Read this manual carefully Warning

Read this manual carefully before starting up the water heater. Failure to

read this manual and to follow the instructions in this manual may lead to

accidents, personal injury, and damage to the appliance.

Nothing from this publication may be copied, reproduced and/or published by

means of printing, photocopying or by whatsoever means, without the prior

written approval of A.O. Smith Water Products Company.

A.O. Smith Water Products Company reserves the right to modify specifications

stated in this manual.

Trademarks Any brand names mentioned in this manual are registered trademarks of their

respective owners.

Liability A.O. Smith Water Products Company accepts no liability for claims from third

parties arising from improper use other than that stated in this manual and in

accordance with the General Conditions registered at the Eindhoven Chamber

of Commerce.

Refer further to the General Conditions. These are available on request, free of

charge.

Although considerable care has been taken to ensure a correct and suitably

comprehensive description of all relevant components, the manual may

nonetheless contain errors and inaccuracies.

Should you detect any errors or inaccuracies in the manual, we would be

grateful if you would inform us. This helps us to further improve our

documentation.

More information If you have any comments or queries concerning any aspect related to the

appliance, then please do not hesitate to contact:

A.O. Smith Water Products Company

PO Box 70

5500 AB Veldhoven

Netherlands

Telephone: (free) 0870 - AOSMITH

0870 - 267 64 84

General: +31 40 294 25 00

Fax: +31 40 294 25 39

E-mail : info@aosmith.nl

Website: www.aosmithinternational.com

In the event of problems with connecting to the gas, electricity or water supply,

please contact your installation's supplier/installation engineer.

4Instruction manual ADMP

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Instruction manual ADMP 5

Table of contents

1 Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - 7

1.1 About the appliance - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7

1.2 What to do if you smell gas- - - - - - - - - - - - - - - - - - - - - - - - - 7

1.3 Regulations - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7

1.4 Target groups - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 8

1.5 Maintenance - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 9

1.6 Forms of notation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 9

1.7 Overview of this document - - - - - - - - - - - - - - - - - - - - - - - - 10

2 Working principle of the appliance- - - - - - - - - - - - - - - 11

2.1 Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 11

2.2 General working principle of the appliance - - - - - - - - - - - - - - - - 11

2.3 The appliance's heating cycle - - - - - - - - - - - - - - - - - - - - - - 12

2.4 Protection for the appliance - - - - - - - - - - - - - - - - - - - - - - - 13

2.5 Safety of the installation - - - - - - - - - - - - - - - - - - - - - - - - - 14

3 Installation - - - - - - - - - - - - - - - - - - - - - - - - - - - 15

3.1 Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 15

3.2 Packaging - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 15

3.3 Ambient conditions- - - - - - - - - - - - - - - - - - - - - - - - - - - - 15

3.4 Technical specifications - - - - - - - - - - - - - - - - - - - - - - - - - 18

3.5 Installation diagram - - - - - - - - - - - - - - - - - - - - - - - - - - - 22

3.6 Water connections, Unvented - - - - - - - - - - - - - - - - - - - - - - 23

3.7 Gas connection - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 25

3.8 Electrical connection - - - - - - - - - - - - - - - - - - - - - - - - - - - 26

3.9 Chimney flue- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 27

3.10 Checking the supply pressure and burner pressure - - - - - - - - - - - - 30

4 Conversion to a different gas category - - - - - - - - - - - - 33

4.1 Conversion to a different gas category - - - - - - - - - - - - - - - - - - 34

5 Filling - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 37

5.1 Filling unvented installations - - - - - - - - - - - - - - - - - - - - - - - 38

5.2 Filling vented installations - - - - - - - - - - - - - - - - - - - - - - - - 38

6 Draining - - - - - - - - - - - - - - - - - - - - - - - - - - - - 39

6.1 Draining unvented installations - - - - - - - - - - - - - - - - - - - - - - 40

6.2 Draining vented installations - - - - - - - - - - - - - - - - - - - - - - - 40

7 The control panel- - - - - - - - - - - - - - - - - - - - - - - - 41

7.1 Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 41

7.2 Control panel - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 41

7.3 Control thermostat - - - - - - - - - - - - - - - - - - - - - - - - - - - - 41

7.4 On/off switch- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 41

7.5 Flue gas thermostat reset button - - - - - - - - - - - - - - - - - - - - - 41

8 Status of the appliance - - - - - - - - - - - - - - - - - - - - - 43

8.1 Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 43

8.2 Operating modes - - - - - - - - - - - - - - - - - - - - - - - - - - - - 43

8.3 Error conditions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 43

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Table of contents

6Instruction manual ADMP

9 Starting and running - - - - - - - - - - - - - - - - - - - - - - 45

9.1 Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 45

9.2 Starting the appliance - - - - - - - - - - - - - - - - - - - - - - - - - - - 45

9.3 The appliance's heating cycle - - - - - - - - - - - - - - - - - - - - - - - 45

10 Shutting down - - - - - - - - - - - - - - - - - - - - - - - - - 47

10.1 Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 47

10.2 Shutting the appliance down for a brief period ("OFF" mode) - - - - - - - - 47

10.3 Isolating the appliance from the mains - - - - - - - - - - - - - - - - - - - 47

10.4 Shutting the appliance down for a long period - - - - - - - - - - - - - - - 47

10.5 Disposal - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 47

11 Troubleshooting - - - - - - - - - - - - - - - - - - - - - - - - 49

11.1 Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 49

11.2 Error conditions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 49

11.3 ADMP Troubleshooting table for general errors - - - - - - - - - - - - - - 50

11.4 ADMP Troubleshooting table - no hot water - - - - - - - - - - - - - - - - 51

11.5 ADMP Troubleshooting table - insufficient hot water - - - - - - - - - - - - 52

12 Performing maintenance - - - - - - - - - - - - - - - - - - - - 53

12.1 Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 53

12.2 Preparation for maintenance - - - - - - - - - - - - - - - - - - - - - - - 53

12.3 Water-side maintenance - - - - - - - - - - - - - - - - - - - - - - - - - 54

12.4 Gas-side maintenance - - - - - - - - - - - - - - - - - - - - - - - - - - 56

12.5 Finalising maintenance - - - - - - - - - - - - - - - - - - - - - - - - - - 56

13 Warranty (certificate) - - - - - - - - - - - - - - - - - - - - - - 57

13.1 General warranty - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 57

13.2 Tank warranty- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 57

13.3 Conditions for Installation and use - - - - - - - - - - - - - - - - - - - - - 57

13.4 Exclusions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 58

13.5 Scope of the warranty - - - - - - - - - - - - - - - - - - - - - - - - - - - 58

13.6 Claims - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 58

13.7 Obligations of A.O. Smith - - - - - - - - - - - - - - - - - - - - - - - - - 58

14 Appendices - - - - - - - - - - - - - - - - - - - - - - - - - - - 59

14.1 Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 59

14.2 Electrical diagram - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 60

Instruction manual ADM 7

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1 Introduction

1.1 About the appliance This manual describes how to install, service and use the ADMP appliance. The

ADMP appliance is a gas-fired open boiler without fan. ADMP appliances are

equipped with a flue gas backflow safeguard.

The ADMP is an appliance of type B11BS.

The information in this manual applies to types: ADMP 40, ADMP 50, ADMP 60,

ADMP 80, ADMP 90 and ADMP 115.

The appliance has been manufactured and equipped in accordance with the

European standard for gas-fired storage water heaters for the production of

domestic hot water (EN 89). The appliances are therefore compliant with the

European Directive for Gas Appliances, and and are entitled to bear the CE

mark.

Warning

Read this manual carefully before starting up the water heater. Failure to

read the manual and to follow the printed instructions may lead to personal

injury and damage to the appliance.

1.2 What to do if you

smell gas

Warning

If there is a gas smell:

No naked flames! No smoking!

Avoid causing sparks! Do not use any electrical equipment or switch, i.e. no

telephones, plugs or bells!

Open windows and doors!

Shut off the mains gas supply valve!

Warn occupants and leave the building!

After leaving the building, alert the gas distribution company or your installation

engineer.

1.3 Regulations Gas Safety Installations and Use Regulations 1998 (as amended). By law,

all gas appliances must be installed by competent persons, in accordance with

the above regulations. Failure to install appliances correctly could lead to

prosecution. It is in your own interest, and that of safety, to ensure that this law

is complied with.

The installation of the boiler MUST be carried out in accordance with the

relevant requirements of the Gas Safety Regulations, Building Regulations, IEE

Regulations and the Water Supply (water fittings) Regulations.

0063

Introduction

8Instruction manual ADM

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The installation should also be in accordance with any relevant requirements of

the HSE, local gas region and local authority and the relevant recommendations

of the following documents:

British Standards

•BS 6891: Specification for installation of low-pressure gas pipework of up to

28 mm (R1) in domestic premises (2nd family gas). For larger installations,

see IGE/UP/2 below.

•BS 6798: Specification for installation of gas-fired boilers of rated input not

exceeding 70 kW net.

•BS 6644: Specification for installation of gas-fired hot water boilers of rated

inputs between 60 kW and 2 MW (2nd and 3rd family gases).

•BS 6700: Specification for design, installation, testing and maintenance of

services supplying water for domestic use within buildings and their

associated premises.

•BS EN 806-2: Specification for installations inside buildings conveying water

for human consumption. Part 2: Design.

•BS 5546: Specification for installation of hot water supplies for domestic

purposes, using gas-fired appliances of rated input not exceeding 70 kW.

•BS 5440: Installation and maintenance of flues and ventilation for gas

appliances of rated input not exceeding 70 kW net (1st, 2nd and 3rd family

gases). Part 1: Flues. Part 2: Ventilation.

Institute of Gas Engineers and Managers Publications

• IGE/UP/1 Soundness testing and purging of industrial and commercial gas

installations.

• IGE/UP/1A Soundness testing and direct purging of small low-pressure

industrial and commercial natural gas installations.

• GE/UP/2 Gas installation pipework, boosters and compressors on industrial

and commercial premises.

• IGE/UP/10 Installation of gas appliances in industrial and commercial

premises. Part 1: flued appliances.

CIBSE Publications:- "CIBSE Guide"

Section B4: Water Service Systems.

1.4 Target groups The three target groups for this manual are:

• (end) users;

• installation engineers;

• service and maintenance engineers.

Symbols on each page indicate the target groups for whom the information is

intended. See the table.

Target group symbols

Symbol Target group

(End) user

Installation engineer

Service and maintenance engineer

Instruction manual ADM 9

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1.5 Maintenance A service should be carried out at least once a year, both on the water side and

on the gas side. Maintenance frequency depends, among other things, on the

water quality, the average burning time per day and the set water temperature.

Note

To determine the correct maintenance frequency, it is recommended to

arrange for the service and maintenance engineer to check the appliance on

both the water and gas side within three months following installation. Based on

this check, the best maintenance frequency can be determined.

Note

Regular maintenance extends the service life of the appliance.

Note

Both the end user and the service and maintenance engineer are

responsible for regular maintenance. They will need to establish clear

agreements on this.

Note

If the appliance is not regularly maintained, the warranty will become void.

1.6 Forms of notation The following notation is used in this manual:

Note

Important information.

Caution

Ignoring this information can lead to the appliance being damaged.

Warning

Failure to carefully read this information may lead to personal injury and

serious damage to the appliance.

Introduction

10 Instruction manual ADM

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1.7 Overview of this

document

The table provides an overview of the contents of this document.

Contents of this document

Chapter Target groups Description

Working principle of the

appliance

This chapter describes how the appliance functions.

Installation This chapter describes the installation activity to be

completed before you actually start up the appliance.

Filling This chapter describes how to fill the appliance.

Draining This chapter describes how to drain the appliance.

The control panel This chapter describes the general operation of the

appliance and explains how to use the control panel.

Status of the appliance This chapter describes the status (mode or condition) that

the appliance may have, and possible actions to take.

Starting and running This chapter describes how to start the appliance running.

The general heating cycle of the appliance is also

described.

Shutting down This chapter describes how to shut the appliance down for

a brief or long period of time.

Troubleshooting This chapter is mainly intended for the installation

engineer and the service and maintenance engineer. It

describes appliance errors. A table is included stating

potential symptoms, causes and solutions. End users

may also refer to this chapter for additional information

about the appliance.

Performing maintenance This chapter sets out the maintenance tasks to be carried

out during a service.

Warranty (certificate) This chapter states the warranty terms and conditions.

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