Lochinvar AMP 200-9 Guide

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
Copyright
Copyright © 2019 Lochinvar Ltd.
All rights reserved.
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,

4
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
49
130
54
140
60
150
66
160
71
170
77
180
82

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

0313545_AMP_UKUK_V2.0, 03-02-2020 11
control circuit once again and the safety relays
will release. Repeat this operation at least one
time.
Switch off the feed voltage and fit the fuses of
the elements again. Close the door and
reconnect the feed voltage.
6.4 Environmental aspects
6.4.1 Recycling
The packaging material is environmentally
friendly, recyclable and relatively easy todiscard.
6.4.2 Disposal
Old end-of-life appliances contain materials that
need to be recycled. When you discard devices
at the end of their service life, you must obey
local legislation related to waste disposal.
Never discard your old device together with
regular waste. Put the device into a municipal
waste collection depot for electrical and
electronic equipment. If necessary, ask your
supplier or your service and maintenance
engineer for advice.
7 Water heater
7.1 Structure of the water heater
The water heater has the following main
components:
Tank The water is stored and heated
up in the tank.
Elements The heating elements heat up
the water.
8 Installation
Warning
The installation must be carried out by a qualified
person, in compliance with general and local
applicable regulations.
Caution
The water heater may not be used in rooms
where chemical substances are stored or used
because of the risk of explosion and corrosion of
the water heater. Some propellants, bleaching
agents and degreasing agents etc. disperse of
explosive vapours 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.
8.1 Packaging
Lochinvar recommends unpacking the water
heater at or near its intended location. Remove
the packaging material carefully to prevent
damage to the water heater.
8.2 Conditions
The water heater must be installed, separated
from living area’s, with adequate ventilation
8.2.1 Ambient conditions
The installation site must be frost-free. If
necessary, adjust the installation site to keep it
frost-free.
Air humidity and ambient temperature
Air humidity
Max. 93% RH at + 25 ºC
Ambient
temperature
Functionality: 0 < T < 40 ºC

12 Installation, Commissioning, User & Maintenance Instructions
8.2.2 Maximum floor load
Refer to the building construction engineer and
the general specifications in the appendices (see
11) to make sure that the maximum floor load is
sufficient for the weight of the water heater.
8.2.3 Water composition
The water must comply with the regulations for
drinking water for human consumption.
Water composition
Hardness
(alkaline earth
ions)
> 1.00 mmol/l:
-German hardness > 5.6° dH
-French hardness > 10.0° fH
-English hardness > 7.0° eH
-CaCO3 > 100 mg/l
Conductivity
> 125 µS/cm
Acidity
(pH value)
7.0 < pH value < 9.5
Note
Water quality may adversely affect the efficiency,
performance and lifetime of the water heater,
refer to Warranty (see 11.6). If water
specifications differ from the specifications in the
table a water treatment specialist should be
consulted.
8.2.4 Working clearances
Make sure that there is sufficient clearance to
access the water heater:
 50 cm in front of the water heater.
 50 cm at the left and right side of the water
heater).
 100 cm at the top of the water heater.
8.2.5 Placement of the water heater
Before you install the water connections and gas
connections, place the water heater on the
correct position and make sure that the water
heater is level.
Warning
This appliance must be installed on a non-
flammable floor or surface
8.3 Installation diagram
Fig. Installation diagram
IMD-0413 R0.0
1. Pressure reducing valve (1)
3. T&P valve (optional)
4. Stop valve (recommended)
5. Non-return valve
6. Circulation pump (optional)
9. Drain valve
11. Service stop valve
14. Draw-off point
15. Expansion valve
16. Expansion vessel
A. Cold water supply
B. Hot water outlet
C. Circulation pipe (optional)
1.mandatory if the mains water pressure is too high

0313545_AMP_UKUK_V2.0, 03-02-2020 13
Note
Use this installation diagram when you:
-install the water connections (see 8.4)
-fill the water heater (see 8.6.1)
-drain the water heater (see 8.6.2)
8.4 Water connections
8.4.1 Cold water connection
Install the cold-water connection:
1. Install an approved stop valve (4), as required
by the applicable regulations (see 6).
2. Install an approved pressure reducing valve
to prevent pressure in the cold water supply
pipe exceeds the maximum working
pressure of the tank, 8 bar. (Refer to the
Technicaldetails).
3. Install a non-return valve (5).
4. Install an expansion valve (15).
5. Connect the overflow connection of the
expansion valve, to an open waste water
pipe.
6. Install an expansion vessel (16).
8.4.2 Hot water connection
Note
Insulate long hot water pipes to prevent
unnecessary energy loss.
Install the hot water connection:
1. Install a stop valve (11) in the hot water
outlet pipe for service reasons.
2. If applicable, install a temperature gauge (12).
3. Install a T&P valve (3).
8.4.3 Circulation connection
Install a circulation system when an immediate
flow of hot water at draw-off points is required.
This improves comfort and reduces water
wastage.
Note
Use the drain valve connection (9) as a
connection of the circulation pipe on the water
heater.
Note
Make sure that the circulation pump has the
correct capacity for the length and resistance of
the circulation system.
Install a circulation pump:
1. Install a circulation pump (6).
2. Install a non-return valve (5) after the
circulation pump to make sure that the
direction of circulation is guaranteed.
3. Install a stop valve (4) before the circulation
pump.
4. Install a stop valve (4) after the non-return
valve.
5. Connect the circulation pipe to the drain
valve (9).
8.4.4 Drain valve
Install the drain valve:
1. Fasten the drain valve (9) in theconnection
in the front of the water heater.
2. Place the cap over the connection to make it
watertight.
8.5 Electrical connections
Warning
Leave the water heater electrically isolated until
you are ready to commission it.
8.5.1 Preparation
1. Remove the cover of the water heater
2. Remove the foam isolation to make the
electrical section and the terminal block
visible.
8.5.2 Mains power
Note
The water heater is supplied without a power
cable and isolator.
Select and install a local electrical isolator in the
main power supply of the water heater, matching
the rating of the water heater.
This isolator must be installed in the same room
as the appliance, suitably marked, and no more
than 1 meter away from the water heater.

14 Installation, Commissioning, User & Maintenance Instructions
Connect the water heater to the mains power
supply:
1. Pull the power cable through the cable gland.
2. Connect three live core to L1, L2 and L3 and
the mains earth core to A.
3. Connect the power cable to the main power
supply switch.
4. Secure the power cable in the cable gland.
Note
The length of the mains earth core that is
connected to the electrical connection must
be longer than the core of the mains live (L1, L2
and L3).
8.6 Commissioning
To commission the water heater:
1. Fill the water heater (see 8.6.1)
2. Turnon the water heater (see 8.6.2)
8.6.1 Filling
Refer to the installation diagram (see 8.3) when
you fill the water heater:
1. Open the stop valve (11) in the hot water
supply pipe.
2. If applicable, open the stop valves (4) of the
circulation pipe (C).
3. Make sure that the drain valve (9) is closed.
4. Open all hot water draw-off points (14) to
bleed the entire installation of air.
5. Open the valve (14 in the cold water supply
pipe (A). Cold water flows into the water
heater.
6. Fill the water heater until cold water flows out
of all opened draw-off points. The water
heater is completely full.
7. Make sure that no water comes out of the
expansion valve (15) or the T&P valve (3). If
water comes out:
- Examine if the water supply pressure is
greater than the specified value in the
Technical details. If necessary, install a
pressure reducing valve (1).
- Examine if the pressure relief valve of
the inlet security group in the protected
cold supply set-up is installed correctly
and is not defect. If necessary, replace
the expansion valve.
8. Close all hot water draw-off points.
8.5.2 Turn on the water heater
Refer to the procedure in the user part to Turn on
the water heater (see 4.1).
8.7 Decommisioning
To decommission the water heater:
1 Turn off the water heater (see 8.6.1)
2 Drain the water heater (see 8.6.2)
8.7.1 Turn off the water heater
Refer to the procedure in the user part to Turn off
the water heater (see 4.2).
8.7.2 Draining
Refer to the installation diagram (see 8.3) when
you drain the water heater:
1. If applicable, close the service stop valve
(11) in the hot water pipe.
2. Close the stop valve (4).
3. Open the drain valve (9).
4. Aerate the entire installation of air until the
water heater is completely drained.
Note
Disconnect and tilt the water heater in the
direction of the drain valve when the water
heater needs to be drained completely.
9 Maintenance
The water heater needs maintenance at least
once a year. The maintenance interval is
determined by the water quality, the average
operation hours each day and the set water
temperature.
To determine the correct interval, Lochinvar
recommends doing a system check three months
after installation.
Note
Do maintenance to maintain an effective and
efficient transfer of heat to the water. This
significantly increases the service life of the
water heater.

0313545_AMP_UKUK_V2.0, 03-02-2020 15
Note
When needed, spare parts can be ordered. To
be sure that you receive the correct spare parts,
look at the data plate for the full serial number,
the water heater model. Use this information
when you order the spare parts.
Do the following maintenance activities:
• Performance check (see 9.1)
• Water-side maintenance (see9.2)
9.1 Performance check
Check if the performance of all components is
correct:
1. Make sure that the water heater cycle
operates correctly.
2. If applicable, make sure that the T&P valve
operates correctly.
3. Open the T&P valve pressure relief and
make sure that water flows from the outlet.
Warning
Hot water can come out of the T&P valve.
5. Make sure the pressure relief connection of
the inlet security group operates correctly.
Open this pressure relief and make sure that
water spurt out.
9.2 Water-side maintenance
To do water side maintenance:
 Inspect the anode (see 9.2.1)
 Descale the tank (see 9.2.2)
9.2.1 Inspect the anode
The life cycle of the anode is determined by the
quality and the quantity of the water that flows
through the water heater. Inspect the anode at
least once a year to make sure that the tank is
protected against corrosion.
To inspect the anode:
1. Close the pressure reducing valve in the cold
watersupply.
2. Open the nearest hot water tap to reduce the
water pressure in the water heater.
3. Use a wrench to loosen the anode.
4. Takethe anode out of the water heater.
5. Inspect the volume of the anode. When the
anode is consumed for 40 % or more replace
the anode.
Note
If the anode needs to be replaced, always use
an anode of the same type. Please refer to the
type and the serial number on the data plate.
6. Place the anode in the water heater.
7. Use a wrench to fasten the anode.
8. Make sure that the connection is watertight.
Note
Never install an anode isolated from the
metal tank.
9.2.2 Descale the tank
Use a descaling agent if necessary remove lime
and dirt from the tank. Contact Lochinvar
Technical support for advice about which
descaling agent to use. Lochinvar service
department can carry out this function if required,
please contact us for further information.
9.2.3 Finalization
When all maintenance activities are finished,
place the outer door back on the water heater.
After that:
1. If necessary, fill the water heater (see8.7.1).
2. Turnon the water heater (see 8.7.3).

16 Installation, Commissioning, User & Maintenance Instructions
10 Troubleshooting
10.1 General errors
Fault
Cause
Solution
Insufficient or
no hot water
Temperature set too low
Set regulating thermostats higher.
Overheat thermostat break the
circuit.
Press in reset button.
Connector is not seated in stop
contact, mains switch is off or fuses
are broken.
Check the relevant parts.
Cause cannot be ascertained.
Switch off device and ask for help
from technical support
Leakage
Insufficient sealing of the
water connections.
Tighten the screw thread
connections.
Leakages from other water
devices or pipes nearby.
Trace the cause

0313545_AMP_UKUK_V2.0, 03-02-2020 17
11 Appendices
11.1 Technical Data
Type
Unit
AMP200-9
AMP200-18
AMP200-36
Tank capacity
ltr.
200
200
200
Number of elements
-
3
3
6
Power 380V-3F
kW
7.6
15.2
30.3
Power 400V-3F
kW
8.4
16.8
33.6
Power 414V-3F
kW
9.0
18.0
36.0
Heating time up to 60°C *
(400 / 414V)
min.
83/78
42/39
21/19
Heating time up to 40°C *
(400 / 414V)
min.
50/47
25/23
12/12
Tap capacity 1st hour 60°C **
(400 / 414V)
ltr.
368/377
505/525
780/819
Tap capacity continuous 60°C **
(400 / 414V)
ltr/hr
145/155
289/310
578/619
Tap capacity 1st hour 40°C **
(400 / 414V)
ltr.
613/629
842/874
1299/1364
Tap capacity continuous 40°C
(400 / 414V)
ltr/hr
241/258
482/516
963/1032
Weight
kg
73
73
73
Type
Unit
AMP300-9
AMP300-18
AMP300-36
AMP300-54
Tank capacity
ltr.
300
300
300
300
Number of elements
-
3
3
6
9
Power 380V-3F
kW
7.6
15.2
30.3
45.5
Power 400V-3F
kW
8.4
16.8
33.6
50.4
Power 414V-3F
kW
9.0
18.0
36.0
54.0
Heating time up to 60°C *
(400 / 414V)
min.
125/116
62/58
31/29
21/19
Heating time up to 40°C *
(400 / 414V)
min.
75/70
37/35
19/17
12/12
Tap capacity 1st hour 60°C **
(400 / 414V)
ltr.
483/493
620/640
895/934
1169/1228
Tap capacity continuous 60°C **
(400 / 414V)
ltr/hr
145/155
289/310
578/619
867/929
Tap capacity 1st hour 40°C **
(400 / 414V)
ltr.
805/821
1034/1066
1491/1556
1949/2047
Tap capacity continuous 40°C
(400 / 414V)
ltr/hr
241/258
482/516
963/1032
1445/1548
Weight
kg
110
110
110
110
* From 10°C cold water
** After heating time up to 60°C from 10°C and assuming a tap efficiency of 80°C

18 Installation, Commissioning, User & Maintenance Instructions
11.2 Dimensions
Description
AMP200
AMP300
A
Height hot water connection
1460
1580
B
Height of upper side of device
1420
1540
D
Diameter of water heater
560
640
E
Depth
690
790
M
Height of drain valve
125
125
R
Height cold water supply
125
125
S
Height T&P connection
1230
1335
1
Cold water connection
1¼”-14NPT
1¼”-14NPT
2
Hot water connection
1¼”-14NPT
1¼”-14NPT
3
T&P connection
¾”-14NPT
¾”-14NPT
4
Drain plug connection
¾”-14NPT
¾”-14NPT
All dimensions are in mm (rounded up to 10 mm).
IMD-0298 R0.0

0313545_AMP_UKUK_V2.0, 03-02-2020 19
11.3 EcoDesign Data
Description
Unit
AMP200-9
AMP200-18
AMP200-36
Load Profile
-
XL
XL
XL
Energy Efficiency Class
-
C
C
C
Water Heating Efficiency
%
38.0
38.0
38.0
Daily Electricity Consumption
kWh
20.161
20.161
20.161
Daily Fuel Consumption
kWh GCV
0.000
0.000
0.000
Mixed Water 40°C (V40)
ltr.
240
465
∞
Additional Load Profile
-
-
-
-
Energy Efficiency
%
-
-
-
Daily Electricity Consumption
kWh
-
-
-
Daily Fuel Consumption
kWh GCV
-
-
-
Mixed Water 40°C (V40)
ltr.
-
-
-
Description
Unit
AMP300-9
AMP300-18
AMP300-36
AMP300-54
Load Profile
-
XL
XL
XL
XL
Energy Efficiency Class
-
C
C
C
C
Water Heating Efficiency
%
38.4
38.4
38.4
38.4
Daily Electricity Consumption
kWh
20.120
20.120
20.120
20.120
Daily Fuel Consumption
kWh GCV
0.000
0.000
0.000
0.000
Mixed Water 40°C (V40)
ltr.
420
720
∞
∞
Additional Load Profile
-
-
-
-
-
Energy Efficiency
%
-
-
-
-
Daily Electricity Consumption
kWh
-
-
-
-
Daily Fuel Consumption
kWh GCV
-
-
-
-
Mixed Water 40°C (V40)
ltr.
-
-
-
-

20 Installation, Commissioning, User & Maintenance Instructions
11.4 Electrical diagram
Fig. 3 phases/3 elements (9 kW)
A = Network connection
B = Fuses
C = Relay
D = Fuse
E = Transformer
F = Safety relay
G = Float switch
H = Overheat thermostat
K = Regulation thermostat
L = Electrical heating element
X1 = Terminal block
1 = Black
2 = Red
3 = Blue
4 = Brown
5 = Yellow 0310149 R0.0