ADMR Commercial Atmospheric Water Heater 0311797 0216 - Changes Reserved. ADMR - 40/50/60/80/90/115/135 0063 T RESE ENTER Installation, User and Service Manual Innovation has a name.
your installer 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.
gis 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.
gis 4 Instruction manual ADMR
gis Table of contents 1 Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - 7 1.1 1.2 1.3 1.4 1.5 1.6 1.7 2 About the appliance - - - What to do if you smell gasRegulations - - - - - - - Target groups - - - - - - Maintenance - - - - - - - Forms of notation - - - - Overview of this document - - - - - - - - - - - - - - - - - - - - - - - - - 7 7 7 8 8 8 9 Working principle of the appliance- - - - - - - - - - - - - - - 11 2.1 2.2 2.3 2.4 2.
Table of contents 9 Starting and running - - - - - - - - - - - - - - - - - - - - - - 51 9.1 9.2 10 Shutting down - - - - - - - - - - - - - - - - - - - - - - - - - 53 10.1 10.2 10.3 10.4 10.
gis 1 1.1 About the appliance 0063 1.2 What to do if you smell gas Introduction This manual describes how to install, service and use the ADMR appliance. The ADMR appliance is a gas-fired open boiler without fan. ADMR appliances are equipped with a flue gas backflow safeguard. The ADMR is an appliance of type B11BS. The information in this manual applies to types: ADMR 40, ADMR 50, ADMR 60, ADMR 80, ADMR 90, ADMR 115 and ADMR 135.
1 1.4 Target groups Introduction gis 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 1.5 Maintenance A service should be carried out at least once a year, both on the water side and on the gas side.
gis 1.7 Overview of this document Chapter The table provides an overview of the contents of this document. Contents of this document 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.
1 10 Introduction gis Instruction manual ADMR
gis 2 2.1 2.2 Introduction General working principle of the appliance Working principle of the appliance Topics covered in this chapter: • General working principle of the appliance; • The appliance's heating cycle; • Protection for the appliance; • Safety of the installation. The figure shows a cut-away view of the appliance. Cut-away view of the appliance Legend Only applicable numbers are 22 mentioned. 2. hot water outlet 4. ThermoControl 32 (electronic controller) 7.
2 Working principle of the appliance gis 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.
gis 2.4.2 Water temperature protection The electronic controller uses temperatures sensors T1 (7) and T2 (13) to monitor three temperatures that are important for safety. The table explains the functioning of the temperature sensors. Temperature protection Protection Description Against frost (T1 < 5 °C or T2 < 5 °C) The frost protection cuts in. The water is heated to 20 °C.
2 Working principle of the appliance 2.5.3 gis 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. 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.
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.
3 Installation 3.3.1 is 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 Air humidity and ambient temperature 3.3.2 Air humidity max.
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.
3 3.4 Installation Technical specifications is 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 F See the table.
Instruction manual ADMR Dimensions Size Description Unit ADMR 40 ADMR 50 ADMR 60 ADMR 80 ADMR 90 ADMR 115 ADMR 135 A Total height mm 1900 2100 1900 2100 2000 2085 2085 B Height of top of appliance mm 1760 1960 1760 1960 1795 1870 1870 D Appliance diameter mm 710 710 710 710 710 710 710 E Depth mm 800 800 800 800 800 800 800 F Width mm 1100 1100 1100 1100 1105 1105 1105 G Diameter of chimney flue mm 150 150 180 180 225 225 225 H Heart ap
3.4.
Instruction manual ADMR 3.4.3 Gas data Description II2H3+ Unit ADMR 40 ADMR 50 ADMR 60 ADMR 80 ADMR 90 ADMR 115 ADMR 135 Orifice diameter mm 3.20 3.20 3.10 2.95 3.20 3.20 3.90 (1) = Blank plate (2) = Burner pressure regulator (3) = High/low regulator 1, 2 or 3 2 2 2 2 2 2 2 Nominal load (gross calorific value) kW 42.2 56.5 66.4 82.5 98.3 126.6 143.4 Nominal output kW 32.3 42.8 50.2 62.4 74.3 95.8 109.
3 3.5 Installation diagram Installation is 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 4. stop valve (recommended) 5. non-return valve (mandatory) 6. circulation pump (optional) 7. top to bottom circulation pump (optional) 9. drain valve 4 10. manual gas valve (mandatory) 6 11.
is 3.6 Water connections, Vented 3.6.1 Warning The installation should be carried out by an authorised installation engineer, in compliance with general and local regulations (1.3 "Regulations"). Cold water side See (A) in the installation diagram (3.5 "Installation diagram"). 1. Fit an approved stop valve (4) on the cold water side between the cold water head tank (18) and the appliance, as required by regulations (1.3 "Regulations"). 3.6.
3 Installation 3.6.5 is Circulation pipe See (C) in the installation diagram (3.5 "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 of the circulation system. 2. Fit a non-return valve (5) behind the circulation pump to guarantee the direction of circulation. 3.
is 3.7.4 Drain valve 1. Fit the standard drain valve (9) supplied with the appliance. 2. If applicable, fit a circulation pipe (3.6.5 "Circulation pipe"). If not, fit the blind threaded plug and gasket (C) supplied with the drain valve, as shown in the figure. C IMD-0122 R1 3.7.5 Circulation pipe See (C) in the installation diagram (3.5 "Installation diagram"). If an immediate flow of hot water is required at draw-off points, a circulation pump can be installed.
3 3.9 Installation Chimney flue is Warning The installation should be carried out by an authorised installation engineer, in compliance with general and local regulations (1.3 "Regulations"). 3.9.1 Introduction The separately-supplied draught diverter must be used when connecting the appliance to the chimney flue. The flue gas sensor and flue damper supplied standard with the appliance must be mounted in the draught diverter. The electrical parts of the flue damper must also be connected (3.
is Installing the draught diverter Legend 1 2 3 4 5 6 7 8 mounting bracket holes for mounting bracket screws for mounting bracket holes for draught diverter sealing ring screws for draught diverter 45° bend chimney pipe >0,5 m 8 7 6 5 4 2 1 3 IMD-0123 R1 3. Fit the mounting bracket (1) in such a way that it properly supports the draught diverter. 4. Drill two holes (2) (3.2 mm bit) for the mounting bracket screws. 5. Screw the mounting bracket tightly to the appliance. 6.
3 Installation 3.9.3 is Fitting the flue damper The following parts can be found in the separate package for the flue damper, supplied with the appliance: the complete assembled flue damper (1), a mounting plate (2) with hole for the flue damper shaft, and fastening screws. You may fit the flue damper in either the left or the right hand side of the draught diverter. Flue damper Legend 1 2 flue damper mounting plate 2 1 IMD-0124 R1 1. Take the flue damper (1) out of the packaging. 2.
is 3.9.4 Fitting the flue gas sensor Attached to the control column is a plastic bag containing the flue gas sensor and related mounting components. The sensor lead is already connected inside the control column, but not Flue gas safety Legend 1 2 3 4 5 bracket flue gas sensor fastening bracket plug sensor lead 1 2 5 4 3 IMD-0120 R1 Fit the flue gas sensor as follows: 1. Take the bracket (1) (with flue gas sensor (2) already fitted) from the packaging. 2.
3 Installation 3.10.2 is Preparation Caution The appliance is phase-sensitive. It is absolutely essential to connect the mains phase (L) to the phase of the appliance, and the mains neutral (N) to the neutral of the appliance. Caution There may be no potential difference between neutral (N) and earth ( ). If this is the case, then an isolating transformer must be applied in the supply circuit (3.10.5 "Connecting an isolating transformer").
is Terminal block Mains power 1 L1 N 2 3 Tank ON Top to bottom circulation pump 4 L2 N 5 6 S1 X1 X2 X3 X4 13 14 15 16 17 18 Alarm Out 19 20 L3 N - - - 8 9 10 11 12 7 S2 X2 X2 Unused Flue gas safety X1 X! Continuous pump 21 Relay power Unu sed L4 N - 22 23 24 Flue damper 25 L5 N L6 X1 X2 26 27 28 29 30 Isolating transformer Primary N L7 31 3.10.
3 Installation 3.10.4 is Connecting flue damper 1. Feed the power cable through the metric strain relief in the top of the control column. 2. Connect earth ( ), live (L5) and neutral (N) to terminals 25, 26 and 27. Next connect the three coded black wires (1 through 3) to terminals 28), lead 2 to terminal 29 (X1) and lead 3 to terminal 30 (X2). See the terminal block connections table (3.10.2 "Preparation"). 3. Turn the strain relief tight to clamp the lead. 4.
is 3.10.9 Connecting an extra error signal ("Alarm OUT") Alarm OUT is a potential free terminal that is switched when an error is detected. This can be used to signal errors, for example with a lamp. A 230 V circuit can be directly powered. For other voltages, a specific relay with cable harness and instructions is available from A.O. Smith. The power to this relay can be connected to terminals 22 and 23. 1. Feed the power cable through the metric strain relief in the top of the control column. 2.
3 Installation is Gas control for ADMR 135 Legend Only applicable numbers are mentioned. 2 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 1 9 6 8 7 IMD-0129 R1 3.11.1 Preparation 1. Isolate the appliance from the power supply (10.3 "Electrically isolating the appliance"). 2. There are two test nipples on the gas control.
is The display will now show INTERNAL CHECK for about 10 seconds and go to the main menu. INTERNAL CHECK MENU »OFF ^ ON È WEEK PROGRAM 8. Activate the "ON mode" by going through the following steps: - Press the blue arrow once ( ) to position the cursor in front of ON and press . The display shown here will appear. »START OPERATION ^ CHANGE SETPOINT È Tset=65ÉC - Confirm the by pressing START OPERATION. The appliance is now in the "ON mode" and will ignite. 9.
3 Installation 3.11.2 is Checking burner pressure 1. Remove the cap (2) from the burner pressure regulator. 2. Depending on the correction required, correct the burner pressure by turning adjustment screw (3): - Adjustment screw anticlockwise: burner pressure decreases. - Adjustment screw clockwise: burner pressure increases. 3. Cover the opening of the adjusting screw and check the burner pressure against the value given in thegas data table (3.4.3 "Gas data"). 4.
is 4 Conversion to a different gas category Caution The conversion may only by carried out by an authorised installation 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. Caution You must check the supply pressure and burner pressure once the conversion is complete.
4 4.1 Conversion to different category ADMR 40 through 115 Conversion to a different gas category is 1. Isolate the appliance from the power supply (10.3 "Electrically isolating the appliance"). 2. Shut off the gas supply. Caution The burner can be hot. 3. Unscrew the cover plate (1) from the burner support. 4. Use a suitable tool to remove the retaining strips (2). Note that the retaining strips have very sharp edges. Withdraw the retaining strips straight upwards.
is 11. Check whether there is a burner pressure regulator (1) attached to the gas control, or simply a blank plate (5). Note If the supply pressure for a gas category is the same as the burner pressure (see the gas data table (3.4.3 "Gas data")) then the gas control must be fitted with a blank plate with cork gasket. A burner pressure that deviates in comparison to the supply pressure requires the use of a burner pressure regulator with rubber gasket.
4 4.2 Conversion to a different gas category is Conversion to a different gas category ADMR 135 4.2.1 Introduction This paragraph describes: • Conversion from LP gas to natural gas; • Conversion from natural gas to LP gas. Conversion of gas control Legend Only applicable numbers are mentioned. 1. burner pressure regulator 7. gas control 9.
is 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 pull reliefs 8. 9-contact terminal strip 9. metric pull relief 10.
4 Conversion to a different gas category is 1. Carry out steps 1 through 9 (4.1 "Conversion to different category ADMR 40 through 115"). 2. Detach the high-low control (9) 3. Fit the burner pressure regulator (1) including the sealing gasket from the conversion set. Attach the burner pressure regulator to the gas control using the two small screws supplied. (7). 4. Detach the leads between the 6contact terminal strip(6) and the 9contact terminal strip (8).
gis 5 5.1 Filling Filling the appliance 5.1.1 Filling unvented installations Installation diagram Legend Only applicable numbers are mentioned. 1. pressure reducing valve (mandatory) 3. T&P valve 4. stop valve (recommended) 5. non-return valve (mandatory) 6. circulation pump (optional) 7. top to bottom circulation pump (optional) 9. drain valve 10. manual gas valve (mandatory) 11. service stop valve (mandatory) 12. temperature gauge (recommended) 14. hot water draw-off points 15.
5 Filling 5.1.2 gis Filling vented installations Installation diagram Legend Only applicable numbers are mentioned. 3. T&P valve 4. stop valve (recommended) 5. non-return valve (mandatory) 6. circulation pump (optional) 7. top to bottom circulation pump (optional) 9. drain valve 10. manual gas valve (mandatory) 11. service stop valve (mandatory) 12. temperature gauge (recommended) 14. hot water draw-off points C 17. 3-way aeration valve (recommended) 18. water tank 19. float valve A.
gis 6 6.1 Draining unvented installations Legend Only applicable numbers are mentioned. 1. pressure reducing valve (mandatory) 3. T&P valve 4. stop valve (recommended) 5. non-return valve (mandatory) 6. circulation pump (optional) 7. top to bottom circulation pump (optional) 9. drain valve 10. manual gas valve (mandatory) 11. service stop valve (mandatory) 12. temperature gauge (recommended) 14. hot water draw-off points 15. expansion valve (mandatory) 16. expansion vessel (mandatory) A.
6 6.2 Draining vented installations Draining gis Installation diagram Legend Only applicable numbers are mentioned. 3. T&P valve 4. stop valve (recommended) 5. non-return valve (mandatory) 6. circulation pump (optional) 7. top to bottom circulation pump (optional) 9. drain valve 10. manual gas valve (mandatory) 11. service stop valve (mandatory) 12. temperature gauge (recommended) 14. hot water draw-off points C 17. 3-way aeration valve (recommended) 18. water tank 19. float valve A.
gis 7 7.1 The control panel Introduction 7.3 Topics covered in this chapter: Explanation of icons The table explains the meanings of the icons. • Controls; • Explanation of icons; • Electronic controller ON/OFF switch; • Navigation buttons; • PC connection.
7 7.5 The control panel gis Navigation buttons The use of these buttons is explained with the help of the figure that shows the main menu (11 "Main menu"). The navigation buttons are: • Buttons for UP • Enter: • Reset button: , and DOWN ; ; . The ^ arrows and È indicate that you can scroll up and/or down. Use the buttons and to scroll. MENU OFF ^»ON È WEEK PROGRAM EXTRA PERIOD SETTINGS The cursor » points to the option to be activated.
gis 8 8.1 Status of the appliance Introduction Topics covered in this chapter: • Operating modes; • Error conditions; • Service condition. 8.2 Operating modes When running, the appliance has four basic operating modes, namely: • OFF • ON • EXTRA • PROG 8.2.1 OFF In this mode, the frost protection is activated. The figure shows the display with the following information: • line one: the text OFF; • line two: the time, the day and alternately (2.
8 8.2.4 Status of the appliance PROG In this mode a preset week program is active, and the appliance responds continually to demand within the time periods set in the week program. There are two distinct situations possible in this mode: PROG 10:00 Monday 76ÉC MO 11:15 Tset 75ÉC gis 8.3 Error conditions The figure shows an example of an error condition.
gis 9 9.1 Starting and running Starting and running Start the appliance as follows: 9.2 The appliance's heating cycle 3. Switch on the power to the appliance using the isolator between the appliance and the power supply. The appliance's heating cycle is activated as soon as the measured water temperature (Tnet) falls below the threshold value (Tset). This threshold value depends on the currently selected appliance operating mode.
9 Starting and running 3. During the waiting time, the flue damper opens. - The icon - The message FLUE DAMPER appears. is activated. ON Ê Ê Ê 13:45 Thursday 63ÉC Tset 65ÉC FLUE DAMPER 4. After the flue damper opens, the text GLOW PLUG appears on the display. This is followed by the (pre-)glow of the hot surface igniter. - The icon is dimmed. - The icon is activated. ON Ê Ê Ê 13:45 Thursday 63ÉC Tset 65ÉC GLOW PLUG 5.
gis 10 Shutting down 10.1 Introduction 4. Wait until the fan has stopped. The then dimmed. This chapter describes: • • • • Shut the appliance down for a brief period ("OFF mode"); Electrically isolating the appliance; Shutting the appliance down for a long period; Disposal. 10.2 Shut the appliance down for a brief period ("OFF mode") symbol is 5. Switch the appliance OFF (position 0) using the ON/OFF switch on the control panel. 6.
10 54 Shutting down gis Instruction manual ADMR
gis 11 Main menu 11.1 Notational convention for menu-related instructions The MENU ( ) of the electronic controller is divided into submenus. For example, SETTINGS is one of the functions reached from the main menu. The SETTINGS menu is divided into submenus in turn. For example, LANGUAGE is a submenu of SETTINGS. So, for example, to select the LANGUAGE menu, this manual uses the following notational convention: SETPOINT » 65ÉC : SETTINGS | LANGUAGE • Confirm with . This means: 1.
11 Main menu The appliance's default week program switches the appliance on every day at 00:00 and off at 23:59. The default water temperature setting is 65 °C. If you want, you can change every setting in the appliance's standard week program. If the water temperature becomes too low while the week program is running, the appliance will run through the heating cycle (9.2 "The appliance's heating cycle") and return to the week program.
gis 3. Use and is 08. to set the hours. In the example, this Confirm with . The cursor moves to the minute digits, which flash. ON OFF Tset PUMP SU 08»00 SU 08:00 65ÉC ON SAVE Note Because the switch-off time can never be earlier than the switch-on time, the switch-off time setting is automatically adjusted with the switch-on time. 4. Use and to set the minutes. In the example, this is 15. Confirm with . The cursor moves to the switch-off hour digits, which flash.
11 Main menu The display shows the menu for the week program. The cursor points to the active period. DAY ON »SU OFF SU ON MO TIME Tset 08:15 75ÉC P 12:45 00:00 65ÉC P .................... .................... OFF SA 23:59 INSERT DELETE START OPERATION 2. Scroll to INSERT. Confirm with . The sub-menu for adding a period will appear.
gis Confirm with DAY ON !SU OFF SU ON MO . TIME Tset 18:00 75ÉC P 22:00 00:00 65ÉC P OFF MO 23:59 .................... .................... OFF SA 23:59 INSERT DELETE START OPERATION 5. The lines showing switch-on/off times are replaced by the text DELETE BLOCK?. See the figure. Confirm with (or use DAY ON ! OFF ON MO . to cancel) TIME Tset DELETE BLOCK? 00:00 65ÉC P The switching period has been deleted. You will return now to the week program menu. The cursor points to the first programmed period.
11 Main menu gis Setting the switch-off time 11.6 Settings 1. Use and is 012. Using the SETTINGS option, you can adjust certain settings and read certain appliance data: to set the hours. In the example, this Confirm with . • The cursor moves to the minute digits, which flash. ON OFF Tset PUMP SU 08:15 SU 12»15 65ÉC ON START 2. Use and this is 45. to set the minutes. In the example, Confirm with . The cursor moves to the water temperature.
gis 11.6.2 Setting day and time To enter the time and day: Confirm the minute setting with TIME 15»45 MENU WEEK PROGRAM ^ EXTRA PERIOD È»SETTINGS The time has been set. 1. Call up the menu for entering the day and time as follows: : SETTINGS. 2. Confirm with . The display shows the menu for settings. 3. Scroll with and to DAY/TIME Confirm with . SETTINGS LANGUAGE ^»DAY/TIME È SPECIFICATIONS to the desired day. . TIME 5. The cursor moves to the hour digits, which flash.
11 62 Main menu gis Instruction manual ADMR
is 12 Service program 12.1 Introduction The service program is used by the installation engineer or service and maintenance engineer for: • Setting the hysteresis; • Displaying the error history; • Displaying the appliance history; • Display the selected appliance; • Switching the pump on or off; • Setting the service interval; • Setting the display contrast; • Setting the display backlight time; • Setting the display scroll speed.
12 Service program is 12.4 Displaying the appliance history 12.7 Setting the service interval The appliance history submenu is used to display the burning hours, the number of ignitions, the number of flame errors and the number of ignition errors. To aid servicing, the electronic controller includes a service interval which is used to set the frequency of maintenance interval (14.2 "Determining service interval") by the service and maintenance engineer, based on the number of burning hours.
gis 13 13.1 Introduction Troubleshooting A distinction is made between: • General errors General errors are not reported on the display. General errors are: - Gas smell; - Display does not light up; - Insufficient or no hot water; - Water leakage; - Explosive ignition. The manual includes a table with general errors (13.2 "Troubleshooting table for general errors"). • Displayed errors Errors are reported on the display, as follows: - Line one: an error code and a brief description.
is 13.2 Troubleshooting table for general errors Warning Maintenance may only be performed by a qualified service and maintenance engineer. General errors Symptom Cause Gas smell Gas leak Solution Remark Close the main gas valve immediately. Contact your installation engineer or local gas company immediately. Do not operate any switches. No naked flames. Ventilate the boiler room.
is Symptom Cause Explosive ignition Incorrect supply Set the correct supply pressure and/or burner pressure and/or burner pressure. (3.11 "Checking the supply pressure and burner pressure pressure") Poor flame profile Solution Contaminated burner Clean the burner(s) (15.4.2 "Clean the burner(s)") Contaminated orifice Clean the orifice(s) (15.3.4 "Clean the orifice(s)") Inadequate air supply Improve the air supply by providing better ventilation in the boiler room.
is 13.3 Troubleshooting table for displayed errors Warning Maintenance may only be performed by a qualified service and maintenance engineer.
is Symptom Cause Solution Remark (2) S04 (blocking error) Flue gas sensor is not (correctly) connected. Connect the flue gas sensor lead to JP4. See the ADMR electrical diagram (17 "Appendices") Open circuit from flue gas sensor 1. Defective flue gas sensor Replace the flue gas sensor T1 To replace the necessary parts, you must contact your installation engineer Damaged wiring 1. Measure the wire resistance of the sensor lead. This must be ± 0 Ohm.
is Symptom Cause S14 (blocking error) Short circuit in flue gas Replace the flue gas sensor(2) and lead. sensor circuit Solution Remark To replace the necessary parts, you must contact your installation engineer Short circuit in flue gas Replace the flue gas sensor(2) and lead.
is Symptom Cause Solution F04 (lock out error) No gas 1. Open the main gas valve and/or the manual gas valve supplying To repair the gas supply, contact your installation engineer the water heater Three unsuccessful ignition attempts. Remark 2. Check the supply pressure to the gas control 3. If necessary, repair the gas supply Air in the gas pipes Bleed the air out of the gas pipe No burner pressure 1. Check the burner pressure to the gas control 2.
is Symptom Cause Solution Remark F06 (lock out error) Damaged cable in contact with metal surface. Check the wiring of the flame probe. If necessary, replace the wiring. If the error persists, contact your installation engineer. To replace the necessary parts, you must contact your installation engineer Ceramic part of the flame probe is broken/cracked. 1. Check that the ceramic part of the flame probe is still intact in the vicinity of the burner's air distribution plate. Defective gas valves 1.
is Symptom Cause Solution F11 (blocking error) Defective gas valves See F07. Chimney flue blocked 1. Check for blockages in the chimney flue pipe Remark Flame detection with closed gas valve. F12 (lock out error) 2. Remove any blockages The flue gas backflow safeguard is activated. F13 (lock out error) If the error cannot be resolved or is persistent, contact your installation engineer 3. Reset electronic controller.
is Symptom Cause C02 (lock out error) Incorrect reference voltage from the AD Error message from the converter. appliance controller. Internal error message • from the appliance controller. • • EEPROM read error 50 Hz error Internal communication error Internal error message • from the appliance controller. • • • • • Gas valve relay error Safety relay error Ignition relay error RAM error EEPROM error EEPROM contents do not match the software version C03 (blocking error) Solution Remark 1.
is Symptom Cause E01 (blocking error) The temperature of the None. This is a temporary message that may appear from time to water at the top of the time, but will disappear automatically. tank is > 85 °C. The temperature protection at the top of the tank has been activated. E03 (lock-out error) Error in temperature sensor T1 at the top of the tank. E04 (lock-out error) Error in dummy sensor(2). Solution Remark The two temperature 1. Check sensor position and wiring.
is Instruction manual ADMR 76
is 14 14.1 Introduction Maintenance frequency 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 Regular maintenance extends the service life of the appliance.
14 78 Maintenance frequency is Instruction manual ADMR
s 15 15.1 Introduction Performing maintenance Caution Maintenance may only be performed by a qualified service and 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. 1. Preparation for maintenance; 2. Water-side maintenance; 3. Gas-side maintenance; 4. Finalizing maintenance.
15 Performing maintenance s MENU »OFF ^ ON È WEEK PROGRAM 6. Activate "ON mode" by going through the following steps: - Press once on the blue arrow ( ) to position the cursor beside ON, then press . »START OPERATION ^ CHANGE SETPOINT È Tset=65ÉC - Confirm the selection START OPERATION with . 7. If there is no heat demand, increase Tset (11.3 "Setting the water temperature"). Note the original setting. Draw some hot water off to create heat demand. 8.
s 4. Disconnect the draught diverter from the flue gas discharge. 5. Undo the screws on the draught diverter. 6. Remove the draught diverter from the appliance. 7. Undo the screws of the lid in the top side of the appliance. 8. Remove the lid from the appliance. 9. Remove the sealing ring from the appliance. 10. Now also check the flue baffles (15.4.3 "Checking the flue baffles"). If necessary, replace them. 11. Place a new sealing ring on the rim of the tank and re-fit the lid. 12.
15 Performing maintenance s 3. Undo the bolts. 4. Remove the lid, the gasket and the O-ring. 5. Inspect the tank and remove the loose scale deposits and contamination. 6. If the scale cannot be removed by hand, descale the appliance with a descaling agent. Contact the supplier/manufacturer for advice on what descaling agent to use. 1 5 3 4 6 2 IMD-0282 R1 7. Close the cleaning opening. To avoid damage to the tank, tighten the bolts that fasten the lid with a torque no greater than 50 Nm.
s 5. Undo the screws on the draught diverter. 6. Remove the draught diverter from the appliance. 7. Undo the screws of the lid in the top side of the appliance. 8. Remove the lid from the appliance. 9. Remove the sealing ring from the appliance. Warning The flue baffles can be hot. 1. Remove the flue baffles from the appliance. 2. Check the flue baffles for the presence of corrosion, removing this if necessary. 3. Check the flue baffles for wear, and replace the flue baffles if necessary. 4.
15 84 Performing maintenance s Instruction manual ADMR
gis 16 Warranty (certificate) To register your warranty, you should complete and return the enclosed warranty card after which a warranty certificate will be sent to you. This certificate gives the owner of a appliance supplied by A.O. Smith Water Products Company B.V. of Veldhoven, The Netherlands (hereinafter "A.O. Smith") the right to the warranty set out below, defining the commitments of A.O. Smith to the owner. 16.
16 16.4 Exclusions Warranty (certificate) gis The warranty set out in articles 1 and 2 will not apply in the event of: a. damage to the water heater caused by an external factor; b. misuse, neglect (including frost damage), modification, incorrect and/or unauthorised use of the water heater and any attempt to repair leaks; c. contaminants or other substances having been allowed to enter the tank; d.
is 17 17.1 Introduction Instruction manual ADMR Appendices This appendix contains: • Electrical diagrams ADMR (17.2 "Electrical Diagrams ADMR"); • Week program card.
17 Appendices is 17.2 Electrical Diagrams ADMR 17.2.
is TERMINAL STRIP CONNECTIONS: Earth N Neutral Live input of Controller L1 Live input of program-controlled pump L2 Live input of continuous pump L3 Live input of extra error signal connection L4 Live input of flue damper motor L5 Live output of flue damper motor (feedback) L6 Live input of isolating transformer (primary side) L7 Live output of isolating transformer (secondary L8 side) COMPONENTS: A Controller B Gas control C Hot surface igniter D Flame probe E Extra error signal connection F Double-pole is
17 Appendices 17.2.
is TERMINAL STRIP CONNECTIONS: Earth N Neutral Live input of Controller L1 Live input of program-controlled pump L2 Live input of continuous pump L3 Live input of extra error signal connection L4 Live input of flue damper motor L5 Live output of flue damper motor (feedback) L6 Live input of isolating transformer (primary side) L7 Live output of isolating transformer (secondary L8 side) COMPONENTS: A Controller B Gas control C Hot surface igniter D Flame probe E High-low control F Timer G Extra error signal
17 92 Appendices is Instruction manual ADMR
17.3 Week program card You can cut the week program card out and keep it near the appliance. Period DAY TIME ON 1. OFF ON 2. OFF ON 3. OFF ON 4. OFF ON 5. OFF ON 6. OFF ON 7. OFF ON 8. OFF ON 9. OFF ON 10. OFF ON 11. OFF Tset Pump Period .... °C ON / OFF 12. .... °C ON / OFF 13. .... °C ON / OFF 14. .... °C ON / OFF 15. .... °C ON / OFF 16. .... °C ON / OFF 17. .... °C ON / OFF 18. .... °C ON / OFF 19. .... °C ON / OFF 20. .... °C ON / OFF 21. ....
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gis Index A H ambient temperature 16 appliance displaying history 64 displaying selection 64 heating cycle 12 heating cycle 12 humidity 16 hysteresis setting 63 I installation engineer 8 isolator 31 B burner pressure 33 L C claims 86 connect circulation piping 24, 25 cold water side 23, 24 electrical 29, 31 gas 25 hot water side 24 shut pipe 23, 24 connecting circulation pipe 24, 25 connecting cold water side 23, 24 connecting hot water side 24 controls 55 conversion to a different gas category 37 la
Index S T scale 81 scrolling 48 service check 8, 77 service engineer 8 service required 50 setting backlight time 64 setting date 61 setting display contrast 64 setting display scroll speed 64 setting service interval 64 shunt pump 23, 24 specifications 18 starting up 51 supply pressure 33 symbol installation engineer 8 service engineer 8 user 8 0311 797 1.
