Lochinvar AMP 200-9 Leitfaden

Installation, Commissioning,

User & Maintenance Instructions

LV 313545 | February 2020

0313545 R2.0 / 0620 - Changes Reserved

Models:

AMP 200-9

AMP 200-18

AMP 200-36

Cavalier

Electric Water Heater

Models:

AMP 300-9

AMP 300-18

AMP 300-36

AMP 300-54

These instructions must be read and understood before installing, commissioning, operating

or maintaining the equipment.

IMPORTANT INFORMATION

0313545_AMP_UKUK_V2.0, 03-02-2020 3

Preface

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 Lochinvar

Ltd..

Lochinvar Ltd. reserves the right to modify

specifications in this manual.

Trademarks

Brand names in this manual are registered

trademarks of their respective owners.

Warranty

Refer to the appendix Warranty (see 11.6) for the

warranty provisions.

Liability

User

Lochinvar accepts no liability when the water

heater is not used correctly and requires the user

to:

•

Read this manual carefully and obey the

instructions.

•

Ask your installation engineer for advise

about the use of the water heater.

•

Make sure that the service and maintenance

activities are done by a qualified engineer.

Installation engineer

Lochinvar accepts no liability when the water

heater is not used correctly and requires the

installation engineer to:

•

Read this manual carefully and obey the

instructions.

•

Make sure that the entire water heater

installation complies with the applicable

regulations.

•

Make sure that the water heater is tested

before the installation is taken into use.

•

Explain the correct use to the user.

•

Notify the user when service and

maintenance activities are necessary.

•

Make sure that you hand over all applicable

manuals.

Supplier

The AMP water heater is designed in

accordance with the applicable regulations. The

water heater is delivered with all necessary

documentation to obey these regulations.

Lochinvar accepts no liability for claims from third

parties when:

•

The instructions for the correct installation of

the water heater are not obeyed.

•

The instructions for the correct use of the

water heater are not obeyed.

•

The water heater did not havemaintenance at

the correct maintenance interval.

For more information, refer to the General Terms

of Sales. These are available on request, free of

charge.

We believe that this manual provides you with

accurate and complete descriptions of all

relevant components. If you, nonetheless find

errors or inaccuracies in this manual, please

inform Lochinvar. This helps us to further

improve our documentation.

Compliance

To safely produce domestic hot water, the design

and construction of the AMP water heaters is in

accordance with:

•

The LVD Directive (2006/95/EC)

•

The European Pressure Equipment Directive

•

The European ECO-Design Directive.

•

The European Energy Labeling Directive

Refer to the appendix Declaration of conformity

(see 11.5).

Regulations

The installation of the equipment MUST be in

accordance with the relevant requirements of the

Building Regulations, I.E.E. Regulations and the

bylaws of the local water undertaking.

In addition, the installation should follow the

relevant guidance offered in the following

documents. It is not practical to list all relevant

information due to continuous changes but

emphasis is placed on the following documents,

as failure to comply with the guidance given will

almost certainly result in an unsatisfactory

installation:

•

British Standards (BS), especially:

-BS 6700: 1997 - Design, installation,

testing and maintenance of services

supplying water for domestic use with

buildings and their curtilages

-BS 67074: 1989 Part 1 and 2 -

Application, selection and installation of

expansion vessels and ancillary

equipment for sealed systems

-BS 7671: 2008 - Requirements for

electrical installations, I.E.E. wiring

regulations seventeenth edition

-CP 342: Part 2 1974 - Code of practice for

centralised hot water supply-buildings

other than dwellings

•

CIBSE Guides

•

Clean Air Act

•

H.S.E Guidance

Note

Manufacturer's notes must not be taken in any

way as overriding statutory obligations.

Contact information

In the event of problems with your electricity or

water supply connections or when you have any

comments or questions, please contact your

supplier.

About this manual

Scope

This manual gives information about safe and

correct use of the water heater and how

installation, maintenance and service activities

have to be done correctly. You must obey the

instructions in this manual.

Caution

Read this manual carefully before you start the

water heater. It can cause personal injury and

damage to the water heater when you do not

read the manual and/or do not obey the

instructions.

The purpose of this manual is to:

•

describe the working principles and layout of

the water heater

•

explain the safety devices

•

highlight possible hazards

•

describe the use of the water heater

•

describe the installation, service and

maintenance of the water heater

This manual has two parts:

•

A User part that describes the correct usage

of the water heater.

•

An Installation, Maintenance and Service

part, that describes the correct installation

and maintenance procedures.

Target group

The information in this manual applies to three

target groups:

•

users

•

installation engineers

•

service and maintenance engineers

The User part is intended for the (end) users.

The Installation, Maintenance and Service part is

intended for the installation engineers and the

service and maintenance engineers.

Notation conventions

This manual uses the following text conventions:

•

Numbers between parentheses e.g. (1), refer

to elements in a figure that are described by

the text.

•

Cross-references to sections, tables, figures

etc. are underlined and written as (see "...").

In the digital version, the cross-references

function as hyperlinks that can be used to

navigate through the manual by clicking on

them. Example: Safety (see 2).

This manual contains the following text styles for

situations that may endanger users/ engineers,

cause damage to equipment or need special

attention:

Note

A note gives more information on a topic.

0313545_AMP_UKUK_V2.0, 03-02-2020 5 
Caution 
Obey the caution instructions to prevent damage 
of the water heater. 
 
Warning 
Obey the warning instructions to prevent danger 
of personal injury, and serious damage to the 
water heater. 
 
Danger 
Obey the danger instructions to prevent danger 
of serious personal injuries or death, and serious 
damage to the water heater. 
Table of contents 
Preface ............................................................ 3 
Copyright.................................................... 3 
Trademarks................................................3 
Warranty..................................................... 3 
Liability....................................................... 3 
Compliance ................................................3 
Regulations ................................................3 
Contact information ....................................4 
About this manual .......................................... 4 
Scope.........................................................4 
Target group............................................... 4 
Notation conventions.................................. 4 
User Part.......................................................... 6 
1Introduction .............................................. 6 
2Safety ........................................................ 6 
3Operation .................................................. 7 
3.1 Control components..........................7 
3.2 Status of the water heater.................7 
4Use ............................................................ 7 
4.1 Turn on the water heater...................7 
4.2 Turn off the water heater................... 8 
Installation, Maintenance and Service Part... 8 
5Introduction .............................................. 8 
5.1 About the water heater ..................... 8 
5.2 Working principle.............................. 8 
6Safety.........................................................8 
6.1 Safety instructions.............................8 
6.2 Instructions on the water heater........9 
6.3 Safety devices ..................................9 
6.4 Environmental aspects....................11 
7Water heater............................................11 
7.1 Structure of the water heater...........11 
8Installation...............................................11 
8.1 Packaging.......................................11 
8.2 Conditions.......................................11 
8.3 Installation diagram.........................12 
8.4 Water connections..........................13 
8.5 Electrical connections .....................13 
8.6 Commissioning...............................14 
8.7 Decommisioning .............................14 
9Maintenance............................................14 
9.1 Performance check.........................15 
9.2 Water-side maintenance.................15 
10 Troubleshooting......................................16 
10.1 General errors.................................16 
11 Appendices .............................................17 
11.1 Technical Data................................17 
11.2 Dimensions.....................................18 
11.3 EcoDesign Data..............................19 
11.4 Electrical diagram ...........................20 
11.5 Declaration of conformity ................23 
11.6 Warranty.........................................24 
 

6 Installation, Commissioning, User & Maintenance Instructions

User Part

1 Introduction

The AMP water heater stores and heats water

for sanitary purposes.

Cold water enters the tank through the water

inlet (2). The heated water leaves the tank at the

top through the hot water outlet (1). When hot

water is used, the tank of the water heater is

filled with the same amount of cold water.

Tooperate the water heater, the regulation

thermostat, on each heating element, is used.

Fig. AMP water heater

1. Water outlet

2. Water inlet

2 Safety

Lochinvar cannot be held responsible for

damages or injuries due to to:

•

Failing to follow the instructions providedin

this manual.

•

Carelessness during use or maintenance of

the water heater.

Every user must study the user part of this

manual and must follow the instructions in this

part of the manual strictly. Do not change the

sequence of the described actions. This manual

must be available for the user and service

engineer at all times.

Warning

If you detect a burning smell:

Shut off the mains power supply

No naked flames! No smoking!

Open windows and doors!

Warn occupants and leave thebuilding!

After leaving the building, alert your installation

engineer.

Caution

Do not store or use chemical substances in the

room where the water heater is installed because

of the risk of explosion and corrosion of the water

heater. Some propellants, bleaching agents and

degreasing agents etc. disperse of explosive

vapors and/or cause accelerated corrosion. If the

water heater is used in a room where such

substances are stored or used, the warranty will

be void.

Caution

Installation, maintenance and service may only

by carried out by a qualified engineer.

Caution

The water heater is not intended for use by

persons with reduced physical, sensory or

mental capacities, or who lack the necessary

experience or knowledge.

When the person responsible for their safety is

supervising or has explained how the water

heater should be used, these persons can use

the water heater.

0313545_AMP_UKUK_V2.0, 03-02-2020 7

Caution

This water heater is not intended to be used by

children. Always supervise children, and make

sure that they do not play with the water heater.

Note

Regular maintenance extends the service life of

the water heater. To determine the correct

service interval, the service and maintenance

engineer must do a check on the water heater

three months after installation. Based on this

check, the best service interval can be

determined.

3 Operation

3.1 Control components

To set the temperature of the AMP water heater,

use the control knob of the regulation thermostat.

Each electric heating element has a regulation

thermostat with a control knob.

3.1.1 Temperature control

With the temperature control knob, of each

regulation thermostat, you can set the desired

water temperature of the water heater (see

4.1.1).

Note

It is not possible to use the temperature control

knob to activate and de-activate the water

heater.

3.2 Status of the water heater

The water heaters has 2 opertaion modes.

3.2.1 Operating modes

The AMP has 2 operating modes:

•

OFF mode (see 3.2.1.1)

•

ON mode (see 3.2.1.2)

3.2.1.1 OFF mode

In the OFF mode the water heater is de-activated.

The main power supply of the water heater is set

to 0.

In the OFF mode the water heater is not

protected against frost.

3.2.1.2 ON mode

In the ON mode the water heater continuously

responds to the heat demand. The electric

heating elements are activated when there is a

heat demand.

4 Use

4.1 Turn on the water heater

Caution

Make sure that the water heater is filled with

water before you turn on the water heater.

To start the water heater:

1. Put the water heater in the OFF-mode

2. Open the door of the water heater.

3. Remove the foam so the controls of the

water heater become visible.

4. Turn the temperature control knob of each

heating element to the desired temperature.

5. Replace the foam over the controls

6. Close the door of the water heater.

7. Turn on the main power supply.

4.1.1 Temperature setting

Note

Changing the set temperature is an operation

that must be carried out by a qualified service

engineer/installer. Before attempting to change

the temperature the appliance must be isolated

from the Electric supply (OFF-mode) before the

door to the controls may be opened.

Temperature in °F

Temperature in °C

120

130

140

150

160

170

180

8 Installation, Commissioning, User & Maintenance Instructions

Caution

Preferably the temperature control knob, on each

thermostat, should be set to60°C.

Harmful scaling and lime build-up will be higher

when using position 65°C and higher. At lower

temperature settings there is a higher risk of high

legionella concentrations in the water.

4.2 Turn off the water heater

2.2.1 Turn off for a short period

Toturn off the water heater for less than 2

months, set the water heater in the OFF mode

(see 3.2.1.1).

2.2.2 Turn off for a long period

When the water heater needs to be turned off for

more than 2 months, contact your service and

maintenance engineer to decommission the

water heater.

Installation, Maintenance

and Service Part

5 Introduction

5.1 About the water heater

The AMP water heater is intended for heating

water for sanitary purposes.

The AMP is a electric storage water heater. The

electric heating elements transfer their heat

directly to the water.

5.2 Working principle

Cold water enters the tank through the water

inlet. When the water temperature drops beneath

the set temperature, the electrical heating

elements are activated and the water is heated.

The heating elements directly transfer the heat to

the water and the hot water leaves the tank

through the water outlet.

The tank of the water heater has to be

completely filled during operation. The tank at

least must remain under mains water supply

pressure at any time. Fresh cold water is

immediately added when hot water is drawn from

the water heater. The regulation thermostat on

each heating element, is equipped with a contact

thermostat. This thermostat measures the water

temperature, on the outside of the tank.

6 Safety

6.1 Safety instructions

For safety instructions on the use of the water

heater, refer to Safety (see 2) in the User part of

this manual.

Warning

Installation, maintenance and service must be

carried out by a qualified engineer in compliance

with the national and local regulations.

Warning

This appliance must be installed on a non-

flammable floor or surface.

Caution

The water heater may only be moved in an

upright position. After unpacking, make sure that

the water heater is not damaged.

Caution

Fill the water heater completely before use. Dry

firing will damage the water heater.

Note

Any leakage from the tank and/or connections

can cause damage to the immediate

environment or floors below the level of the

installation room. Install the water heater above a

waste water drain or in a suitable metal leak tray.

The leak tray must have an appropriate waste

water drain and must be at least 5 cm deep with

a length and width of at least 5 cm larger than

the water heater.

0313545_AMP_UKUK_V2.0, 03-02-2020 9

6.2 Instructions on the water heater

The water heater has some safety instructions

on its cover:

The text "A pressure relief valve must be

fitted".

The text "Mount the delivered temperature

and pressure valve in this connection".

The text "Check screwed wire connections".

6.3 Safety devices

Safety devices of the water heater:

Float switch

(boil dry protection)

The float switch monitors the water level, approximately halfway up

the tank, above the elements. If there is insufficient water present

in the tank, then the float hangs down (reed-contact open). If the

tank is filled with water then the float is moved upwards by the

water (reed-contact closed).

Overheat thermostat

The overheat thermostat detects the temperature of the water in

the tank. When the temperature become too high (>93°C) the

thermostat locks the elements. The thermostat can be manually

reset (red button) when the temperature of the water is below

20°C.

Safety devices of the installation:

Expansion valve

The expansion valve is a pressure relief valve. The expansion

valve prevents excessive pressure in the tank and back flow of

expansion water into the cold water main supply.

Non-return valve

The non-return valve prevents back flow of expansion water into

the cold water main supply.

Pressure-reducing valve

The pressure-reducing valve reduces the water mains pressure, if

necessary.

Expansion vessel

The expansion vessel is a small tank that is used to protect closed

water systems from excessive pressure, due to thermal expansion

of the water in the tank.

T&P valve (1)

(Temperature and pressure

relief valve)

The T&P valve is a temperature and pressure relief valve which is

activated when:

-The temperature exceeds 97°C.

-The pressure exceeds 7 bar.

1- All water heaters have a T&P valve connection. Lochinvar recommends to always use a T&P valve.

6.3.1 Boil Dry Protection

The boil dry protection mechanism is a float

switch which monitors the water level

approximately halfway up the tank above the

elements. If there is insufficient water present in

the tank, the float (1) hangs downwards. If the

tank is filled with water then the float is moved

upwards by the water.

6.3.1.1 Working principle

The working principle is as follows: the float arm

moves a magnet that is in contact with a reed-

contact, which is located in the black plastic tube

at the end of the float switch. The movement of

the magnet and float arm changes the magnetic

field and the reed-contact is opened or closed.

10 Installation, Commissioning, User & Maintenance Instructions

6.3.1.2 Exposure height

The exposure height (3) of the reed contact is

very important to ensure the float switch works

correctly.

The exposure height is 14 mm. This setting

may not be changed!

With an exposure height of 14 mm the switch

point is approximately halfway along the stroke

of the float. If the exposure height is set lower,

then the switch point shifts upwards. If the

exposure height is too small the contact will no

longer connect even if the float is completely

above it. In this case the device will not come

into operation. If the exposure height is set lower

than 14 mm , then the switch point shifts

downwards.

This means that the contact will already connect

upon a small upwards movement of the float. If

the exposure height is set too high then the

contact is permanently closed and the safety

mechanism does not work. This means that the

elements can come into operation without there

being sufficient water present in the device. This

will lead to the elements burning out in a very

short time and short circuit and leakage. So

never change the exposure height.

The reed contact and the float must always be

vertical. The arrow on the clamping plate on the

front must point upwards. The float switch is

secured in the tank with nut (5). By loosening nut

(4) the float switch can be set vertically.

Nut (4) is sealed with an o-ring with respect to

nut (5). The float switch must be taken out of the

device as a complete unit for checking or

replacement. (The float cannot be passed

through the opening in nut (5).) For this purpose

the device thus has to be drained.

Fig. Float switch

1. Float

2. Reed contact

3. Float housing (exposure height)

4. Nut

5. Nut

6.3.1.3 Checking the float switch

Switch off the feed voltage and remove the fuses

from the elements. In this way the control circuit

can be tested without the elements being put into

operation.

Drain the device until the water is definitely

below the float switch. If desired the float switch

can now be removed for visual inspection. Check

the resistance of the contacts with a multimeter

and check whether the switch point is situated

approximately halfway along the stroke of the

float. (For new contacts this resistance is

between 1 and 1.5 Ohms). Screw the float switch

back into the tank and place it vertically. Check

the exposure height. Close the door and connect

the feed voltage. The safety relays must not

come in. (The opening and closing of the safety

relays is clearly audible.) Now allow water to flow

into the device. If the water presses the float

upwards, the float switch closes the control

circuit and the safety relays will close. Then drain

the device once again. The lowering of the water

level will lead to the float switch blocking the

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