A.O. Smith ADM - 115 Installation & Service Manual
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A.O. Smith ADM - 115 Installation & Service Manual

A.O. Smith ADM - 115 Installation & Service Manual

A.o. smith gas water heater installation user and service manual
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  • Page 3 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.
  • Page 4 Instruction manual ADM...

  • Page 5: Table Of Contents

    Table of contents Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - 7 About the appliance - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7 What to do if you smell gas- - - - - - - - - - - - - - - - - - - - - - - - - 7 Regulations - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7 Target groups - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 8...
  • Page 6 13.7 Obligations of A.O. Smith - - - - - - - - - - - - - - - - - - - - - - - - - 66 Appendices - - - - - - - - - - - - - - - - - - - - - - - - - - - 67 14.1...

  • Page 7: Introduction

    Introduction About the appliance This manual describes how to install, service and use the ADM appliance. The ADM appliance is a gas-fired open boiler without fan. ADM appliances are equipped with a flue gas backflow safeguard. The ADM is an appliance of type B The information in this manual applies to types: ADM 40, ADM 50, ADM 60, ADM 80, ADM 90, ADM 115 and ADM 135.

  • Page 8: Target Groups

    Introduction Furthermore, the installation must comply with the manufacturer's instructions. guidelines published on or prior to the moment of installing, will apply to the installation. Target groups The three target groups for this manual are: • • • Symbols on each page indicate the target groups for whom the information is intended.

  • Page 9: Overview Of This Document

    Overview of this The table provides an overview of the contents of this document. document Contents of this document Chapter Target groups Working principle of the appliance Installation Filling Draining The control panel Status of the appliance Starting and running Shutting down Troubleshooting Performing maintenance...
  • Page 10 Introduction Instruction manual ADM...

  • Page 11: Working Principle Of The Appliance

    Working principle of the appliance Introduction Topics covered in this chapter: • • • • General working The figure shows a cut-away view of the appliance. principle of the Cut-away view of the appliance appliance Legend Only applicable numbers are mentioned.

  • Page 12: The Appliance's Heating Cycle

    Working principle of the appliance 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).

  • Page 13: Safety Of The Installation

    2.4.2 Water temperature protection By means of the frost, high-limit and safety thermostats, the burner control monitors three temperatures that are important for safety. The table explains the working principle of the thermostats with sensors. Temperature protection Protection Description Frost thermostat When the frost thermostat sensor (46) measures a temperature of 20°C or less, the heating cycle High-limit thermostat...
  • Page 14 2.5.4 T&P valve A T&P valve is only mandatory in an unvented installation. However, A.O. Smith also recommends the use of a T&P valve in vented installations. A T&P (Temperature and Pressure Relief) valve monitors the pressure in the tank and the water temperature at the top of the tank.

  • Page 15: Installation

    Installation 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 Introduction This chapter describes the installation activities to be carried out before the...
  • Page 16 Installation Air humidity and ambient temperature specifications Air humidity and ambient temperature Air humidity Ambient temperature 3.3.2 Maximum floor load In connection with the appliance's weight, take account of the maximum floor loading, refer to the table. Weight of the appliance filled with water ADM 40 ADM 50 ADM 60...

  • Page 17: Technical Specifications

    Working clearances Technical The appliance is supplied without accessories. Check the dimensions specifications and other specifications accessories you plan to use. Instruction manual ADM (3.4.1 "Dimensions of the appliance"), gas data (3.4.2 "General and electrical specifications") IMD-0262 R2 (3.4.3 "Gas data") of any...
  • Page 18 Installation 3.4.1 Dimensions of the appliance Plan and elevation of the appliance Legend See the table. 10º 37º 45º Instruction manual ADM IMD-0135 R2...
  • Page 19 Dimensions (all measurements in mm unless otherwise indicated) Dime Description nsion Total height Height of top of appliance Appliance diameter Depth Width Diameter of chimney flue Heart appliance / Heart chimney flue Height of chimney flue Height of gas connection Height of cold water supply Height of hot water outlet Height of cleaning opening...
  • Page 20 Installation 3.4.3 Gas data Gas data Description II Unit 2H3+ Gas category 2H: General Orifice diameter (1) = Blank plate 1, 2 or 3 (2) = Burner pressure regulator (3) = High/low regulator Gas category G20 - 20 mbar Nominal load (gross calorific value) kW Nominal output Supply pressure mbar...

  • Page 21: Installation Diagram

    Installation diagram 3.5.1 Installation This figure shows the installation diagram. This diagram is used in the sections in which the actual connection process is described. Installation diagram Legend UNVENTED Only applicable numbers are mentioned. 1. pressure reducing valve (mandatory) 3. T&P valve (mandatory) 4.

  • Page 22: Water Connections, Vented

    Installation Water connections, Vented in compliance with general and local regulations 3.6.1 Cold water side See (A) in the installation diagram 1. Fit an approved stop valve (4) on the cold water side between the cold water 3.6.2 Recirculation pipe You can install a top to bottom circulation pump to prevent water stacking in the boiler.

  • Page 23: Water Connections, Unvented

    3.6.5 Circulation pipe See (C) in the installation diagram If an immediate flow of hot water is required at draw-off points, a circulation pump can be installed. This improves comfort and reduces water wastage. 1. Fit a circulation pump (6) of the correct capacity for the length and resistance 2.

  • Page 24: Gas Connection

    Installation 3.7.5 Circulation pipe See (C) in the installation diagram If an immediate flow of hot water is required at draw-off points, a circulation pump can be installed. This improves comfort and reduces water wastage. 1. Fit a circulation pump (6) of the correct capacity for the length and resistance 2.

  • Page 25: Chimney Flue

    Chimney flue in compliance with general and local regulations 3.9.1 Introduction The separately-supplied draught diverter must be used when connecting the appliance to the chimney flue. The standard flue gas thermostat and sensor that are supplied must be fitted in the draught diverter. 3.9.2 Fitting the draught diverter The draught diverter can be positioned according to preference.

  • Page 26: Electrical Connection

    Installation 8. Screw the draught diverter tightly in place. 9. Fit: regulations of appliance. 3.9.3 Flue gas thermostat assembly At the top of the control column there is a plastic bag containing the flue gas thermostat with the sensor plus the associated fastenings. The cable from the sensor has already been connected to the control column.
  • Page 27 3.10.1 Preparations mains live (L) to the live of the appliance, and the mains neutral (N) to the neutral of the appliance. ( ). If this is the case, then an isolating transformer must be applied in the supply circuit . For more information or to order an isolating transformer, please contact A.O.

  • Page 28: Checking The Supply Pressure And Burner Pressure

    Installation diagram for details of the connections of the electrical components. Terminal block Mains voltage 3.10.2 Connecting the mains power The appliance is supplied without a power cable and isolator. mains power by means of a permanent electrical connection. A double-pole isolator with a contact gap of at least 3 mm must be fitted between this permanent connection and the appliance.
  • Page 29 Gas control for ADM 40 through 115 Legend Only applicable numbers are mentioned. 1. burner pressure regulator 2. burner pressure regulator cap 3. burner pressure regulator adjustment screw 4. gas control connector 5. blank plate 6. supply pressure test nipple 7.
  • Page 30 Installation Gas control for ADM 135 Legend Only applicable numbers are mentioned. 1. burner pressure regulator 2. burner pressure regulator cap 3. burner pressure regulator adjustment screw 6. supply pressure test nipple 7. gas control 8. manifold test nipple 9. high-low control 3.11.1 Preparations 1.
  • Page 31 10. Use the pressure gauge to read the supply pressure at test nipple (6). Refer 11. Use the pressure gauge to read the burner pressure at nipple (8). Refer to plate or high-low control, you will not be able to adjust the pressure. In this case, consult your installation engineer or supplier.
  • Page 32 Installation Instruction manual ADM...

  • Page 33: Conversion To A Different Gas Category

    Conversion to a different gas category engineer. If the appliance must operate on a family of gases (LP gas or natural gas) or other gas category than that for which the appliance has been set at the factory, the appliance will have be adapted using a special conversion kit. conversion is complete.

  • Page 34: Conversion To Different Category Adm 40 Through 115

    Conversion to a different gas category Exchanging orifices Legend 1. cover plate 2. retaining strips 3. orifice with stamped figures Conversion to 1. Isolate the appliance from the power supply different category ADM 40 through 115 2. Shut off the gas supply. 3.
  • Page 35 7. Select and fit the correct orifices from the conversion kit, based on the gas 8. Re-fit the burners back in their original position. 9. Re-fit the retaining strips. 10. If the radiation shield / condensation tray was loosened, re-fasten it. Conversion of gas control Legend Only applicable numbers are...

  • Page 36: Conversion To A Different Gas Category Adm 135

    Conversion to a different gas category 13. Check the supply pressure and burner pressure 14. Remove the sticker showing the new gas category from the conversion kit, 15. Start the appliance Conversion to a different gas category ADM 135 4.2.1 Introduction This paragraph describes: •...
  • Page 37 4.2.2 Conversion from LP gas to natural gas Installing and removing add-on components Legend Only applicable numbers are mentioned. 4. timers 5. bracket 6. 6-contact terminal strip 7. strain relief 8. 9-contact terminal strip 9. metric strain relief 10. high-low control lead Instruction manual ADM IMD-0130 R1...
  • Page 38 Conversion to a different gas category 1. Carry out 2. Detach the high-low control (9). 3. Fit the burner pressure regulator (1) including the sealing gasket from the 4. Detach the leads between the 6contact terminal strip(6) and the 9contact 5.
  • Page 39 11. Remove the sticker showing the new gas category from the conversion kit, 12. Start the appliance Instruction manual ADM and attach it below the appliance's rating plate. This clearly indicates that the appliance may no longer be run on the gas for which it was originally supplied.
  • Page 40 Conversion to a different gas category Instruction manual ADM...

  • Page 41: Filling

    Filling Installation diagram Legend UNVENTED Only applicable numbers are mentioned. 1. pressure reducing valve (mandatory) 3. T&P valve (mandatory) 4. stop valve (recommended) 5. non-return valve (mandatory) 6. circulation pump (optional) 7. top to bottom circulation pump (optional) 9. drain valve 10.

  • Page 42: Filling Unvented Installations

    Filling Filling unvented To fill the appliance, proceed as follows: installations 1. Open the stop valve (11) in the hot water pipe and, if present, the stop valves 2. Close the drain valve (9). 3. Open the nearest hot water draw-off point (14). 4.

  • Page 43: Draining

    Draining Installation diagram Legend UNVENTED Only applicable numbers are mentioned. 1. pressure reducing valve (mandatory) 3. T&P valve (mandatory) 4. stop valve (recommended) 5. non-return valve (mandatory) 6. circulation pump (optional) 7. top to bottom circulation pump (optional) 9. drain valve 10.

  • Page 44: Draining Unvented Installations

    Draining Draining unvented Some service activities require the appliance to be drained. The procedure is as follows: installations 1. Shut down the appliance by setting the ON/OFF switch on the control panel 2. Isolate the water heater from the power supply by putting the isolator 3.

  • Page 45: Draining Vented Installations

    Draining vented Some service activities require the appliance to be drained. The procedure is as follows: installations 1. Shut down the appliance by setting the ON/OFF switch on the control panel 2. Isolate the water heater from the power supply by putting the isolator 3.
  • Page 46 Draining Instruction manual ADM...

  • Page 47: The Control Panel

    The control panel Introduction Topics covered in this chapter, in sequence: • Control panel • Explanation of icons • ON/OFF switch • Control thermostat • Burner control reset button • Flue gas thermostat reset button Control panel This figure shows the control panel. The control panel The control panel comprises: •...

  • Page 48: Burner Control Reset Button

    The control panel Burner control reset button An error can cause the burner control to lock out. When this happens, the red LED on the control panel will illuminate. After eliminating the cause of the error, you can reset the appliance using the reset button. Note Before resetting, always eliminate the cause of the error.

  • Page 49: Status Of The Appliance

    Status of the appliance Introduction Topics covered in this chapter: • Operating modes; • Error conditions; Operating modes When running, the appliance has three basic operating modes, namely: • ELECTRICALLY ISOLATED In this mode, the appliance is off and no components are live.
  • Page 50 Status of the appliance Instruction manual ADM...

  • Page 51: Starting And Running

    Starting and running Introduction Topics covered in this chapter: • Starting the appliance; • The appliance's heating cycle. Starting the appliance Start the appliance as follows: 1. Fill the appliance "Filling"). 2. Open (3.5 "Installation diagram") the manual gas valve. 3.
  • Page 52 Starting and running Instruction manual ADM...

  • Page 53: Shutting Down

    Shutting down 10.1 Introduction Topics covered in this chapter: • Shutting down the appliance for a brief period (OFF mode); • Isolating the appliance from the mains; • Shutting the appliance down for a long 10.2 Shutting down the appliance for a brief period (OFF mode) To shut the appliance down for a brief period, you must activate frost protection using the appliance's heating...
  • Page 54 Shutting down Instruction manual ADM...

  • Page 55: Troubleshooting

    Troubleshooting 11.1 Introduction This chapter deals with the following problems with the appliance: • • • • • • 11.2 Error conditions If the water heater goes into an "error" condition, you will be unable to draw hot water. The frost protection will also be out of operation. These error conditions are divided into three groups: •...

  • Page 56: Troubleshooting Table For General Errors

    11.3 Troubleshooting table for general errors Warning Maintenance may only be performed by a qualified service and maintenance engineer. General faults and failures Symptom Cause Precautions Gas smell Gas leak Water leakage Leakage from a water Tighten the threaded connection connection (threaded) Leakage from another Trace the leak...

  • Page 57: Adm Troubleshooting Table - No Hot Water

    11.4 ADM Troubleshooting table - no hot water Warning Maintenance may only be performed by a qualified service and maintenance engineer. No hot water Symptom Cause Precautions Green LED OFF and No supply voltage 1. Check if the isolator is ON. Red LED ON present 2.
  • Page 58 Symptom Cause Precautions 1. No gas: three unsuccessful start attempts in a row 2. No ignition: 3. No flame detection: Symptom Cause Precautions 1. The safety thermostat has cut out correctly: The safety thermostat has cut out 2. The safety thermostat has cut out without apparent reason: Instruction manual ADM Check that the gas valve is open Check whether the gas control is opening (clicking of the...

  • Page 59: Troubleshooting Table - 'Insufficient Hot Water

    11.5 Troubleshooting table - 'insufficient hot water' Warning Maintenance may only be performed by a qualified service and maintenance engineer. Insufficient hot water Symptom Cause Precautions Insufficient hot water Water temperature Set the control thermostat setting (T ) is too low value Hot water supply is 1.
  • Page 60 Instruction manual ADM...

  • Page 61: Performing Maintenance

    Performing maintenance 12.1 Introduction maintenance engineer. At each service, the appliance undergoes maintenance on both the water side and the gas side. The maintenance must be carried out in the following order. and model, and the full serial number of the appliance. These details can be found on the rating plate.

  • Page 62: Water-Side Maintenance

    Performing maintenance 12.3 Water-side maintenance 12.3.1 Introduction The following steps must be carried out on the water side: 12.3.2 Checking the anodes Timely replacement of the anodes extends the service life of the appliance. The appliance's anodes must be replaced as soon as they are 60% or more consumed (take this into consideration when determining the maintenance frequency).

  • Page 63: Gas-Side Maintenance

    To simplify the task of descaling and cleaning the tank, the appliance is equipped with two cleaning openings. 1. Remove the cover plate (1) on the outer jacket (see the figure). 2. Carefully remove the insulation layer (2) and set it to one side. This will be 3.

  • Page 64: Finalising Maintenance

    Performing maintenance 12.4.1 Introduction The following steps must be carried out on the gas side: 12.4.2 Clean the burner(s) 1. Detach the burner(s) 2. Remove all contamination present on the burner(s). 3. Fit the burner(s) 12.4.3 Clean the orifice(s) 1. Detach the orifice(s) 2.

  • Page 65: Warranty (Certificate)

    A.O. Smith shall offer to replace the defective water heater with an entirely new water heater of equivalent size and quality. The warranty period given on the replacement water heater shall be equal to the remaining warranty period of the original water heater that was supplied.

  • Page 66: Exclusions

    Smith warranty expressly set out in this Certificate. Under the terms of the supplied warranty, A.O. Smith is not liable for damage to persons or property caused by (sections or parts, or the glass-lined steel tank of) a (replacement) water heater that it has supplied.

  • Page 67: Appendices

    Appendices 14.1 Introduction This section gives the electrical diagrams for: • • Instruction manual ADM Electrical diagram for ADM 40 to 135 natural gas and 40 to 115 LPG Electrical diagram 135 - LP gas...

  • Page 68: Electrical Diagrams Adm

    Appendices 14.2 Electrical Diagrams 14.2.1 Electrical diagram for ADM 40 to 135 natural gas and 40 to 115 LPG 230V AC 50Hz 1 = brown, 2 = blue, 3 = yellow/green, 4 = black, 5 = white (flat cable) FUSE SUR- FACE L' L"...
  • Page 69 TERMINAL STRIP CONNECTIONS: COMPONENTS: CONTROLLER CONNECTIONS: L" Instruction manual ADM Earth Neutral Phase input of controller Phase input of flue gas thermostat Phase output of flue gas thermostat Two-pole isolator switch Flue gas thermostat "Error" signalling "Operational" signalling RESET button Burner control Control thermostat Frost thermostat...
  • Page 70 Appendices 14.2.2 Electrical diagram 135 - LP gas 230V AC 50Hz FUSE L" 1 1 2 4 1 = brown, 2 = blue, 3 = yellow/green, 4 = black, 5 = white (flat cable) SUR- FACE 1 2 4 4 4 3 3 3 3 4 0304481 R1 Instruction manual ADM...
  • Page 71 TERMINAL STRIP CONNECTIONS: COMPONENTS: CONTROLLER CONNECTIONS: L" Instruction manual ADM Earth Neutral Phase input of controller Phase input of flue gas thermostat Phase output of flue gas thermostat Two-pole isolator switch Flue gas thermostat "Error" signalling "Operational" signalling RESET button Burner control Control thermostat Frost thermostat...
  • Page 72 Appendices Instruction manual ADM...
  • Page 73 Index ambient temperature 15 burner pressure 28 claims 66 connect circulation piping 23, 24 cold water side 22, 23 electrical 26, 28 gas 24 hot water side 23 shut pipe 22, 23 connecting circulation pipe 23, 24 connecting cold water side 22, 23 connecting hot water side 23 control thermostat 47 conversion to a different gas category 33...
  • Page 74 Index Instruction manual ADM 0306 132 4.0 UK...

This manual is also suitable for:

Adm 135Adm 40Adm 50Adm 60Adm 80Adm 90

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