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

Instruction manual ADMP 3
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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.
Copyright © 2015 A.O. Smith Water Products Company
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 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: [phone]
Fax: [phone]
E-mail : [e-mail]
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.

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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

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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.

Instruction manual ADM 11
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2 Working principle of
the appliance
2.1 Introduction Topics covered in this chapter, in sequence:
• General working principle of the appliance;
• The appliance's heating cycle;
• Protection for the appliance;
• Safety of the installation.
2.2 General working
principle of the
appliance
The figure shows a cut-away view of the appliance.
Cut-away view of the appliance
Legend
Only applicable numbers are
mentioned.
2. hot water outlet
6. control panel
8. combustion chamber
9. anode
10. tank
11. heat exchanger
12. inspection and cleaning opening
14. cold water inlet
15. drain valve
16. gas control
21. flame probe
22. chimney pipe
24. insulation layer
33. draught diverter
34. flue gas sensor
35. radiation shield/condensation
tray
36. bar burners/burner tray
37. flue gas thermostat
38. safety thermostat sensor
39. high-limit thermostat sensor
41. control thermostat
42. high-limit thermostat
43. safety thermostat
45. control thermostat sensor
51. pilot burner
52. spark igniter
54. spark electrode
22
11
33
9
37
34
24
10
12
8
15
35
16
39
51
2
38
45
6
41
42
43
54
52
21
14
36
IMD-0364 R1

Working principle of the appliance
12 Instruction manual ADM
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In this appliance, the cold water enters the bottom of the tank through the cold
water inlet (14). The heat of combustion is conducted to the water by the
combustion chamber (8) and heat exchanger (11). The heated tap water leaves
the tank through the hot water outlet (2). Once the appliance is completely filled
with water, it will constantly be under mains water pressure. When hot water is
drawn from the appliance, it is immediately replenished with cold water.
The gas required for combustion flows via the gas control (16) into the manifold.
Orifices are mounted in the manifold. The gas is injected into the burner bars at
pressure from these orifices (36). The burner bars together form the burner tray.
The injection of gas into the burner bars also draws in the primary air required
for combustion. The narrow opening in the orifice causes the gas flow to
accelerate. This in turn causes a partial vacuum. It is this partial vacuum that
draws in the air (the Venturi effect). Additional air is drawn in through the
opening in the burner tray.
The spark surface igniter (52) ensures ignition of the gas/air mixture. The
thermocouple voltage ensures that the gas control either remains open or
closes.
The flue gases released by this combustion are led through the flue tubes (part
of 11). Flue baffles (part of 11) are mounted in the flue tubes. These retard the
flow of the flue gases, thereby increasing the thermal efficiency of the appliance.
The flue gases are vented from the appliance via the draught diverter (33). For
safety, a flue gas sensor (37) has been fitted to the draught diverter.
A radiation shield/condensation tray (35) is mounted below the burner tray. This
prevents overheating of the floor area below the appliance, as well as serving
as a collection tray for condensation water.
The insulation layer (24) prevents heat loss. The inside of the tank is enamelled
to protect against corrosion. The anodes (9) offer extra protection.
2.3 The appliance's
heating cycle
The entire appliance is regulated by a control thermostat. The control
thermostat monitors the water temperature (Twater). The appliance's heating
cycle is activated as soon as Twater falls below the specified threshold value
(Tset). The value for Tset can be adjusted using the control thermostat (± 40 °C -
±70°C).
As soon as Twater drops below Tset there is a demand, and the control
thermostat closes, causing the main valve on the gas control to open. The gas
mixes with the air it draws along. This mixture is ignited by the pilot burner and
the water is heated. As soon as Twater exceeds Tset , demand ceases, the
thermostat opens again, and the heating cycle stops.
The control thermostat has a certain margin both when closing and opening. We
refer to this margin as the hysteresis. The hysteresis cannot be adjusted.

Instruction manual ADM 13
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2.4 Protection for the
appliance
The burner control monitors the water temperature by means of thermostats
and ensures safe combustion. This takes place using:
• the Gas control;
• the Thermocouple;
• the Water temperature protection;
• the Flue gas backflow safeguard.
2.4.1 Gas control
The gas control has 2 valves for safety purposes:
1. The main valve, which controls the gas supply to the burner tray and which
is switched via the I/0/II switch circuit and the control, high-limit and flue gas
thermostats. This circuit is powered by the supply voltage.
2. The safety valve, which controls the gas supply to the pilot burner and which
is switched via the thermocouple circuit and the safety thermostat. This
circuit is powered by the millivoltage from the thermocouple that is located
in the pilot flame. Whenever the safety valve closes, the main valve also
closes.
2.4.2 Thermocouple
1. To prevent gas flowing when there is no combustion, a thermocouple is
fitted. As a result of the presence of the (permanent) pilot flame, the
thermocouple maintains a millivoltage which keeps the gas control's safety
valve open.
2. If the pilot flame goes out, this voltage disappears and the gas control's
safety valve closes, interrupting the gas supply to the burner tray.
2.4.3 Water temperature protection
The burner control monitors three temperatures related to safety using the frost
and high-limit thermostats. The table explains the operation of the thermostats
with sensors.
Temperature protection
2.4.4 Flue gas backflow safeguard
To prevent the flue gases from flowing back into the appliance, is flue gas
sensor (34) and flue gas thermostat (37) have been fitted to the draught diverter.
Under normal conditions, this sensor will register the ambient temperature.
However, if the chimney does not draw sufficiently (for example due to a
blockage in the chimney) then the flue gases will 'reflux' and flow back past the
flue gas sensor. The sensor will then detect an unusually high temperature and
the flue gas thermostat will open. The gas control's main circuit closes, which
interrupts the heating cycle. The flue gas thermostat is blocked and the
appliance must be restarted manually.
Protection Description
High-limit thermostat The heat demand is ended by closing the gas control. This terminates the
heating cycle. The heating cycle restarts once the high-limit thermostat closes.
This happens because the pilot light stays lit when the gas control is closed.
The high-limit thermostat prevents overheating and/or excess lime buildup.
Safety thermostat If the safety thermostat sensor (38) registers a temperature that is higher than
93 °C, the power to the thermocouple is switched off. This terminates the
heating cycle. It is then only possible to restart the appliance using the spark
igniter.

Working principle of the appliance
14 Instruction manual ADM
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2.5 Safety of the
installation
In addition to the standard safety monitoring of the appliance, the appliance
must also be protected by an expansion vessel, expansion valve, non-return
valve and a T&P valve.
Use of an expansion vessel and expansion valve depends on the type of
installation: unvented or vented.
2.5.1 Unvented installation
With an unvented installation, an expansion valve valve and expansion vessel
prevent the buildup of excessive pressure in the tank. This prevents damage
being caused to the enamelled coating (in the appliance) or to the tank. A non-
return valve prevents excessive pressure buildup in the water supply system.
This valve also prevents water from flowing backwards from the tank into the
cold water supply system. The pressure reducing valve protects the installation
against an excessively high water supply pressure (> 8 bar). These components
are fitted to the cold water pipe (3.6.6 "Water connections, Vented").
2.5.2 Vented installation
With a vented installation, excess pressure is taken up by the open cold water
head tank. The height of the head tank determines the working pressure in the
water heater, which may not exceed 8 bar. The installation must also be fitted
with a vent pipe from the hot water pipe, that opens into the cold water tank.
Ideally, the vent pipe should discharge into a separate tundish/drain or
otherwise to the open cold water head tank. The water heater should also be
fitted on the hot water side with a stop valve (3.6.3 "Hot water side").
2.5.3 T&P valve
A T&P (Temperature and Pressure Relief) valve monitors the pressure in the
tank and the water temperature at the top of the tank. If the pressure in the tank
becomes excessive (> 10 bar) or the water temperature is too high (> 97 °C),
the valve will open. The hot water can now flow out of the tank. Because the
appliance is under water supply pressure, cold water will automatically flow into
the tank. The valve remains open until the unsafe situation has been rectified.
The appliance is fitted standard with a connecting point for a T&P
valve (3.6.3 "Hot water side").

Instruction manual ADM 15
is
3 Installation
Warning
Installation work should be carried out by an approved installation engineer
in compliance with the general and local regulations imposed by the gas, water
and power supply companies and the fire service.
The appliance may only be installed in a room that complies with the
requirements stated in national and local ventilation
regulations (1.3 "Regulations").
3.1 Introduction This chapter describes the installation activities to be carried out before the
appliance may be started up (9 "Starting and running"), in particular:
• Packaging;
• Ambient conditions;
• Technical specifications;
• Water connections, Vented;
• Gas connection;
• Chimney flue;
• Electrical connection;
• Checking the supply pressure and burner pressure.
For possible conversion to a different gas category, see
conversion (4 "Conversion to a different gas category").
3.2 Packaging To avoid damaging the appliance, remove the packaging carefully.
We recommend unpacking the appliance at or near its intended location.
Caution
The appliance may only be manoeuvred in an upright position. Take care
that the appliance is not damaged after unpacking.
The packaging prevents damage to the appliance during transport. The
packaging material chosen is environmentally friendly, recyclable and relatively
easy to dispose of in an environmentally aware way.
3.3 Ambient conditions Caution
The appliance may not be used in rooms where chemical substances are
stored or used, due to the risk of explosion and/or corrosion of the appliance.
Some propellants, bleaching agents, degreasing agents etc. disperse vapours
which are explosive and/or which cause accelerated corrosion. If the appliance
is used in a room in which such substances are present, the warranty will be
void.
ADMP appliances are open appliances and may only be installed in an open
boiler room. Their type is B11BS.

Installation
16 Instruction manual ADM
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3.3.1 Air humidity and ambient temperature
The boiler room must be frost-free, or be protected against frost. The table
shows the environmental conditions that must be adhered to for correct
functioning of the electronics present in the appliance to be guaranteed.
Air humidity and ambient temperature specifications
3.3.2 Maximum floor load
In connection with the appliance's weight, take account of the maximum floor
loading:
Maximum floor load
3.3.3 Water composition
The appliance is intended for heating drinking water. The drinking water must
comply with the regulations governing drinking water for human consumption.
The table gives an overview of the specifications.
Water specifications
Note
If the water specifications deviate from those stated in the table, then the
tank protection cannot be guaranteed (13 "Warranty (certificate)").
Air humidity and ambient temperature
Air humidity max. 93% RV at +25 °C
Ambient temperature Functional: 0 < T < 60 °C
ADMP
40
ADMP
50
ADMP
60
ADMP
80
ADMP
90
ADMP
115
504 kg 578 kg 507 kg 573 kg 522 kg 523 kg
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
Conductivity > 125 µS/cm
Acidity (pH value) 7.0 < pH value < 9.5

Instruction manual ADM 17
is
3.3.4 Working clearances
For access to the appliance, it is recommended that the following clearances
are observed (see figure):
• AA: around the appliance's control column and cleaning openings: 100 cm.
• BB: all sides of the appliance: 50 cm.
• Above the appliance (room to replace the anodes):
- 100 cm if using fixed anodes, or
- 50 cm if using flexible anodes.
If the available clearance is less than 100 cm, flexible magnesium anodes
may be ordered.
Note
When installing the appliance, be aware that any leakage from the tank
and/or connections can cause damage to the immediate environment or floors
below the level of the boiler room. If this is the case, the appliance should be
installed above a wastewater drain or in a suitable metal leak tray.
The leak tray must have an appropriate wastewater drain and must be at least
5 cm deep with a length and width at least 5cm greater than the diameter of the
appliance.
Working clearances
BB
AA
AA
AA
IMD-0515 R0

Installation
18 Instruction manual ADM
3is
3.4 Technical
specifications
The appliance is supplied without accessories. Check the
dimensions (3.4.1 "Dimensions of the appliance"), gas data (3.4.3 "Gas data")
and other specifications (3.4.2 "General and electrical specifications") of any
accessories you plan to use.
3.4.1 Dimensions of the appliance
Plan and elevation of the appliance
Legend
See the table.
10º
37º 45º
F
E
A
D
H
G
B
M
R
K
P
S
N
J
6
1
3
4
6
2
5
IMD-0365 R1

Instruction manual ADM 19
Dimensions
Size Description Unit ADMP 40 ADMP 50 ADMP 60 ADMP 80 ADMP 90 ADMP 115
A Overall height mm 1900 2100 1900 2100 2000 2085
B Height of top of appliance mm 1760 1960 1760 1960 1795 1870
D Appliance diameter mm 710 710 710 710 710 710
E Depth mm 800 800 800 800 800 800
F Width mm 1100 1100 1100 1100 1105 1105
G Diameter of flue gas discharge mm 150 150 180 180 225 225
H Heart appliance / heart chimney flue mm 660 660 660 660 675 675
J Height of chimney flue mm 1840 2040 1840 2040 1935 2010
K Height of gas connection mm 205 205 205 205 205 205
M Height of cold water supply mm 565 565 565 565 575 650
N Height of hot water outlet mm 1605 1810 1605 1810 1640 1715
P Height of cleaning opening mm 730 730 730 730 740 825
R Height of drain valve connection mm 500 515 500 515 525 600
S Height of T&P valve connection mm 1550 1760 1550 1760 1595 1660
1 Cold water supply connection (male) - R11/2R11/2R11/2R11/2R11/2R11/2
2 Hot water outlet connection (female) - Rp11/2Rp11/2Rp11/2Rp11/2Rp11/2Rp11/2
3 Gas control connection (female) - Rp3/4Rp3/4Rp3/4Rp3/4Rp3/4Rp3/4
4 Drain valve connection (female) - Rp11/2Rp11/2Rp11/2Rp11/2Rp11/2Rp11/2
5 T&P valve connection (internal) - 1 - 11.5 NPT 1 - 11.5 NPT 1 - 11.5 NPT 1 - 11.5 NPT Rp11/2Rp11/2
6 Cleaning/inspection opening - Ø 100 Ø 100 Ø 100 Ø 100 Ø 100 Ø 100

20 Instruction manual ADM
3.4.2 General and electrical specifications
Description Unit ADMP 40 ADMP 50 ADMP 60 ADMP 80 ADMP 90 ADMP 115
Volume litres 309 357 298 335 278 253
Maximum operating pressure bar 8 8 8 8 8 8
Maximum operating pressure, unvented bar 5.5 5.5 5.5 5.5 5.5 5.5
Minimum operating pressure, unvented bar 3.5 3.5 3.5 3.5 3.5 3.5
Empty weight kg 195 221 209 238 244 270
Heating-up time ΔT=45°C minutes30261917128
Number of anodes - 2 2 2 3 3 4
Number of bar burners/orifices - 3 4 5 7 7 9
Number of flue tubes/flue baffles - 5 6 7 9 12 16
Electrical power consumption W 30 30 30 30 30 30
Supply voltage (-15% +10% VAC) volts 230 230 230 230 230 230
Mains frequency Hz (± 1Hz) 50 50 50 50 50 50
IP class - 30 30 30 30 30 30
Description Unit ADMP 40 ADMP 50 ADMP 60 ADMP 80 ADMP 90 ADMP 115
Load Profile - XXL XXL XXL XXL 3XL 3XL
Energy Efficiency Class (Energy Label) - C C C C - -
EnergyEfficiency %485140404644
Daily Electricity Consumption kWh 0.008 0.005 0.004 0.002 0.002 0.002
Daily Fuel Consumption kWh GCV 50.705 48.485 61.061 61.202 102.176 106.645
Mixed Water 40 °C (V40) ltr. 1137 ∞∞∞1014 ∞
Additional Load Profile - 3XL 3XL 3XL 3XL - -
Energy Efficiency % 58 59 51 51 - -
Daily Electricity Consumption kWh 0.014 0.009 0.007 0.004 - -
Daily Fuel Consumption kWh GCV 80.064 78.992 91.154 92.047 - -
Mixed Water 40 °C (V40) ltr. 530 721 651 971 - -