Water Heaters Innovo Condensing High-Efficiency Water Heater 0312266 1017 - Changes Reserved. IR - 12-160/12-200/20-160/20-200/24-245/ IR - 24-285/32-245/32-285/32-380 Installation, Service, Maintenance and User Manual Innovation has a name.
your installer Water Heaters 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.
Preface Copyright Copyright © 2016 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 in this manual. Trademarks Brand names in this manual are registered trademarks of their respective owners.
Regulations Gas Safety (installations and Use) Regulations 1998 (as amended). It is law that all gas appliances are 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.
Contact information If you have any comments or questions, please contact: A.O. Smith Water Products Company Adress: PO Box 70 5500 AB Veldhoven The Netherlands Telephone: 0870 - AOSMITH (free) 0870 - 267 64 84 General: +31 40 294 25 00 Fax: +31 40 294 25 39 E-mail: info@aosmith.nl Website: www.aosmith.co.uk In the event of problems with your gas, electricity or water supply connections, contact your supplier. 0312266_INNOVO_UKUK_V3.
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. c 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.
This manual contains the following text styles/symbols for situations that may endanger users/engineers, cause damage to equipment or need special attention: n c w Note A note gives more information on a topic. 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. Document identification 8 Article number Language Version 0312266 EN 3.
Table of Contents Preface........................................................................................ 3 Copyright.......................................................................... 3 Trademarks....................................................................... 3 Warranty...........................................................................3 Liability.............................................................................3 Compliance..........................................
4.2.1 Switch to ON mode........................................................... 25 4.2.2 Set the water temperature.................................................25 4.3 Turn off the water heater...................................................25 4.3.1 Turn off for a short period..................................................25 4.3.2 Isolate from the mains...................................................... 26 4.3.3 Turn off for a long period.............................................
8.7.2 C13/C33 parallel systems.................................................. 46 8.7.3 C43/C53/C63 systems.......................................................48 8.8 Electrical connections........................................................ 49 8.8.1 Preparation......................................................................49 8.8.2 Mains power.................................................................... 50 8.8.3 Optional electrical connections................................
.1.2 Displayed errors............................................................... 73 12.1.3 Warnings.........................................................................80 13 Appendices................................................................................ 81 13.1 Technical details...............................................................81 13.2 Dimensions......................................................................82 13.3 Gas details....................................
User part 0312266_INNOVO_UKUK_V3.
1 Introduction The Innovo water heater stores and heats water for sanitary purposes. Cold water enters the bottom of the tank through the water inlet (1). The heated water leaves the tank at the top through the hot water outlet (2). To operate the water heater, the operator interface (3) and control switch (4) are used. Fig. Innovo water heater 1. Water inlet 2 2. Water outlet 3. Operator interface 4. Control switch 3 4 1 0312266_INNOVO_UKUK_V3.
User part
2 Safety A.O. Smith cannot be held responsible for damages or injuries leading back to: • • Failure to follow the instructions provided in this manual. Carelessness during use or maintenance of the water heater. Every user has to study the user part of this manual and has to follow the instructions in this part of the manual strictly. Do not change the sequence of the actions to be done. This manual has to be available for the user and service engineer all the time.
User part
3 Interface 3.1 Operator interface The operator interface consists of: • • • a control switch (see section 3.1.1) on the left side of the water heater 5 push buttons (see section 3.1.2) to navigate through the menu a LCD-display (see section 3.1.3) that shows settings, functions, values and errors. The operator interface is parameter driven and enables the user to change parameters and to verify the status and history of the water heater. Fig. Operator interface 1. LCD display Innovo EXT menu 1 3.
3.1.2 Buttons The 5 buttons on the operator panel give access to the menu of the water heater. 3.1.3 Button Function [ ] Scroll up / Raise [ ] Scroll down / Lower [ENTER] Enter / Confirm [RESET] Reset / Cancel [MENU] Go to menu LCD display The LCD display shows 7 different symbols around the outer edge of the display and 3 characters in the center of the display. The characters represent parameters. Fig. LCD display 1. Characters 2.
The user menu parameters are: Parameter Description Unit/Value Adjustable Range Default 001 Turn the water heater on or off. OFF Yes OFF - water heater off (OFF OFF mode) ON ON - water heater on (ON mode) 002 Setpoint ON mode ºC Yes 40…max setpoint (1) 65 003 Hysteresis ºC Yes 2…15 10 004 Turn setpoint EXT mode (005) ENA Yes ENA - Enable dIS on or off. dIS Setpoint EXT mode ºC 005 (2) dIS - Disable Yes 40…max.
Fig. Actual water temperature 3.2.1.3 Fig. Setpoint Fig. Standby External ON mode In the external ON mode, the water heater will respond to a heat demand when the relay switch is closed. Use parameter 004 to switch on the setpoint (parameter 005) of the external ON mode. Error conditions 3.2.2 If there is an error, the display shows an error code. Error codes always have one letter and two digits. Fig. Error code display n Note When the display shows an error code, try to reset the water heater.
3.2.4 Anode warning An anode protects the tank against corrosion. When the anode protection is not active, the display shows Ano. Contact your service and maintenance engineer. Fig. Anode warning display n Note If you ignore the anode warning, the tank protection cannot be guaranteed. The warranty will be void. 0312266_INNOVO_UKUK_V3.
User part
4 Use 4.1 Set a parameter value To set a parameter value: 1. 2. 3. 4. 5. 4.2 Press [MENU] to access the user menu. Press [ ] or [ ] to scroll to the concerning parameter, refer to Parameters (see section 3.1.3). Press [ENTER] to select. Use [ ] or [ ] to change the parameter value. Press [ENTER] to confirm. a. Press [RESET] to go back to the main menu. b. Press [RESET] to leave the user menu. Turn on the water heater To start the water heater: 1. 2. 3. 4.2.
4.3.2 Isolate from the mains To isolate the water heater from the mains: 1. 2. 3. 4. 4.3.3 Set parameter 001 to OFF, refer to Set a parameter value (see section 4.1). Wait 1 minute to make sure that the water heater stopped operating. Set the control switch to 0. Disconnect the water heater from the mains by turning the isolator. 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 0312266_INNOVO_UKUK_V3.
User part
5 Introduction 5.1 About the water heater The Innovo water heater is intended for heating water for sanitary purposes. The Innovo is a condensing gas–fired storage water heater with a fan in the air intake. The flue gasses transfer their heat to the water through an efficient heat exchanger. The water heater has a concentric venting connector and can function as an open or as a roomsealed water heater. 5.2 Working principle Cold water enters the bottom of the tank through the water inlet (1).
When the temperature is too low, the water heater starts a operating cycle: 1. 2. 3. 4. 5. 6. 7. 8. The controller detects a "heat demand". The icon "Heat demand present" is shown on the display of the water heater. The fan starts pre-purging. The air proving switch closes when the air pressure differential is sufficient. The hot surface igniter starts pre-ignition. The gas control valve opens and the gas/air mixture is ignited. The water heater heats the water in the tank.
6 Safety 6.1 Safety instructions For safety instructions about the use of the water heater, refer to Safety (see section 2) in the User part of this manual. w Warning Installation, maintenance and service must be carried out by a qualified engineer in compliance with the general and local regulations imposed by the gas, water and power supply companies and the fire brigade.
Caution The anode protection remains active when the water heater is in OFF mode and the control switch is set to 0. n 6.2 Note Any leakage from the tank and/or connections can cause damage to the immediate environment or floors below the level of the boiler 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 at least 5 cm greater than the water heater.
6.3 Safety devices Fig. Safety devices 3 1. Temperature sensor 1 2. Gas control valve 3. Air proving switch 4 4. Flame probe 2 Safety devices of the water heater: Temperature sensor (1) The water heater controls the water temperature using a temperature sensor: • T < 5 ºC, frost protection is activated. • T > 88 ºC, max. temperature. • T > 93 ºC, for extra safety. Gas control valve (2) The gas control valve controls the gas supply to the burner.
6.4 Environmental aspects 6.4.1 Recycling The packaging material is environmentally friendly, recyclable and relatively easy to discard. 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.
7 Water heater 7.1 Structure of the water heater The water heater has the following main components: Controller (8) The controller monitors and manages all internal processes of the water heater for a safe operation. Operator interface (1) To control the water heater and to verify the status, the operator interface has 5 buttons and a 3-character display. Refer to Operator interface (see section 3.1). Tank (9) The water is stored and heated up in the tank.
Installation, Maintenance and Service part
8 Installation w c Warning The installation must be done 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 vapors and/or cause accelerated corrosion.
8.2.3 Water composition The water must comply with the regulations for drinking water for human consumption. Water composition n 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 If the water specifications differ from the specifications in the table, the tank protection cannot be guaranteed, refer to Warranty.
Fig. Adjustable leg water heater 1 8.3 Installation diagram n Note This manual only discusses unvented installations. Fig. Installation diagram 1. Pressure relief valve (mandatory if the mains water pressure is too high) 3. T&P valve 4. Stop valve (recommended) 5. Non-return valve 6. Circulation pump (optional) 9. Drain valve 10. Manual gas valve 11. Service stop valve (recommended) 12. Temperature gauge (optional) 13. Condensate drain 14. Draw-off points 15. Expansion valve 16. Expansion vessel A.
n Note Use this installation diagram when you: • • • • • install the water connections (see section 8.4) install the condensate drain (see section 8.5) install the gas connection (see section 8.6) fill the water heater (see section 8.9.1) drain the water heater (see section 8.10.2) 8.4 Water connections 8.4.1 Cold water connection Install the cold water connection: 1. 2. 3. 4. 5. 6. 8.4.2 Install an approved stop valve (4), as required by the applicable regulations.
8.5 Condensate drain c Caution When the condensate drain is not connected to the waste water discharge by an open connection, this can cause faults. Caution Do not change the condensate drain or cause any blockage in the condensate drain. Install the condensate drain: 1. 2. 3. 8.6 Install a drain pipe to the condense drain (13) for condensate drainage. Make sure that the slope of the drain pipe is 5 mm/m. Connect the drain pipe through an open connection to the waste water discharge.
8.7 Venting system There are several alternatives for installation of the air inlet and flue gas outlet: Installation Version type Description B23 Open Air for combustion is drawn from installation room and the flue gasses leave the water heater via a vertical roof terminal. C13 Closed Concentric and/or parallel venting system, with horizontal air inlet and flue gas outlet, in same pressure zone.
Fig. Venting systems 0312266_INNOVO_UKUK_V3.
8.7.1 C13/C33 concentric systems Use a wall terminal set or a roof terminal set to install a C13 or a C33 concentric venting system. Description Concentric Venting material Venting material PP Venting material Alu Manufacture venting material Muelink & Grol Muelink & Grol Construction Concentric Concentric Material flue gas outlet PP - Temp.
Fig. Example concentric venting system c Caution During installation, obey the instructions delivered with the sets of air supply components and the flue gas discharge components. Make sure that the venting system does not exceed the maximum number of 45º and 90º bends and the maximum pipe length. Caution Use a run-off of 50 mm per meter towards the water heater. Refer to the table for the correct pipe dimensions of the C13 and C33 concentric systems.
8.7.2 C13/C33 parallel systems Use a wall terminal set or a roof terminal set to install a C13 or a C33 parallel venting system. Description Parallel Venting Venting material material PP Venting material Alu Manufacture venting material Muelink & Grol Muelink & Grol Construction Parallel Parallel Material flue gas outlet PP - Temp. Class T120 Thick walled aluminum Material air inlet Diameter flue gas outlet 80 +0,6/-0,6 mm 80 +0,3/-0,7 mm Description parts A.O. Smith Part number A.O.
Fig. Example parallel venting system Refer to the table for the correct pipe dimensions of the C13 or a C33 parallel venting systems.
8.7.3 C43/C53/C63 systems The length of the air inlet and flue gas outlet is the same for C43, C53 and C63 systems as for C13 and C33 systems: • • n Refer to C13/C33 concentric systems (see section 8.7.1) for the maximum pipe lengths of concentric systems. Refer to C13/C33 parallel systems (see section 8.7.2) for the maximum pipe lengths of parallel systems and non-concentric systems. Note Only use a C43 venting system when the common duct is a natural draught chimney.
Use the "adapter box concentric to parallel - water heater side" (part number 0312209) for C63 parallel systems. 8.8 Electrical connections w c Warning Leave the water heater electrically isolated until you are ready to commission it. Caution The water heater is phase-sensitive. It is absolutely essential to connect the mains live (L) to the live of the water heater and the mains neutral (N) to the neutral of the water heater.
The mains power and optional electrical connections have to be connected to the terminal block of the controller, refer to Structure of the water heater (see section 7.1). Fig. Terminal block 1. Tulles 3 2. Pull relieves 3. Connections 1 8.8.2 2 Mains power n Note The water heater is supplied without a power cable and isolator. Use a power cable with cores of at least 3 x 0,75 mm2 and a double-pole isolator with a contact gap of at least 3 mm. Connect the water heater to the mains power supply: 8.
8.8.3.3 Additional error signal n Note The water heater has a relay contact that can be used when an error occurs. The relay contact is potential–free (maximal 5 A). Install an additional error signal: 1. 2. 3. 8.8.4 Pull the power cable through the tulles. Connect the cables to X1 and X2. Install the cables in a pull relief under the electrical section. Finalization When all connections are made, install the cover on the water heater: 1. 2. Place the cover on the water heater.
8.9.1 Filling Refer to the installation diagram (see section 8.3) when you fill the water heater: 1. 2. 3. 4. 5. 6. 7. 8. 8.9.2 Open the stop valve (11) in the hot water supply pipe. If applicable, open the stop valves (4) of the circulation pipe (C). Make sure that the drain valve (9) is closed. Open the nearest hot water draw-off point (14). Open the stop valve (4) of the cold water supply pipe (A). Cold water flows into the water heater.
Fig. Air pressure differential L 8.9.3 H Gas supply pressure Check the gas supply pressure: 1. n Note Do not completely loosen the sealing screw, it can be difficult to retighten it. 2. 3. 4. 5. 6. 7. 8. n Loosen the sealing screw (4) of the test nipple by a few turns. Open the gas supply to vent the gas pipes through the test nipple. Connect a pressure gauge to the test nipple as soon as you smell gas. Turn on the water heater (see section 4.2).
Fig. Gas supply pressure 1. Adjuster screw 2. Gas control valve 3. Gas supply pipe 4. Sealing screw 1 2 4 8.9.4 3 CO2 value Check the CO2 value: 54 1. 2. 3. Open the gas supply. Remove the cap (1) from the test nipple (2) of the flue gas outlet pipe. Place the measurement probe of the CO2 meter in the test nipple of the flue gas 4. 5. outlet pipe. Turn on the water heater, refer to Turn on the water heater (see section 4.2). Set parameter 201 to Hi, refer to Settings (see section 10).
6. 7. 8. If necessary, create a heat demand: Use a hot water draw-off point to tap water, or Raise the setpoint of the water temperature, refer to Set the water temperature (see section 4.2.2). Wait until the measured value on the CO2 meter remains stable for some time. This can take several minutes. Compare the full load measured value to the value from the appendix Gas details (see section 13.3). The CO2 value at full load must be within ±1.0 vol% of the CO2 value stated in the table.
8.9.5 Turn on the water heater Refer to the procedure in the user part to Turn on the water heater (see section 4.2). 8.10 Decommisioning To decommission the water heater: 1. 2. 8.10.1 Turn off the water heater (see section 8.10.1) Drain the water heater (see section 8.10.2) Turn off the water heater Refer to the procedure in the user part to Turn off the water heater (see section 4.3) and isolate the water heater from the mains power supply. 8.10.
9 Conversion of gas type c Caution Conversion of the water heater may only be carried out by a qualified person. Use a special conversion kit to converse the water heater when: • • The water heater has to operate on a different family of gases (liquid petroleum gas or natural gas). The water heater has to operate on a gas category other than that for which the water heater has been configured at the factory. You can order the conversion kit you need from the supplier of your water heater.
Installation, Maintenance and Service part
10 Settings 10.1 Operator interface The operator interface is parameter driven and enables the user to change parameters and to verify the status and history of the water heater. When you press [MENU] once, parameters 001 to 120 can be accessed. All other parameters can be accessed when you press [MENU] for 10 seconds. For more information about how to use the operator interface, refer to Operator interface (see section 3.1) and Set a parameter value (see section 4.1). 10.
Parameter Description Unit/Value Adjustable Range Default 116 Status burner Initialization No 0 - Initialization - Reset 1 - Reset Stand-by 2 - Stand-by Pre-purge (1) 3 - Pre-purge Pre-Purge (2) (part 1) Pre-Ignition 4 - Pre-Purge Ignition (part 2) Flame check 5 - Pre Ignition Burn 6 - Ignition Post-Burn 7 - Flame check Post-Purge (1) 8 - Burn Post-Purge (2) 9 - Post Burn Blocking 10 - Post Purge (part 1) Lockout 11 - Post Purge (part 2) Warning 12 - Blocking Burner B
Parameter Description Unit/Value Adjustable Range Default 273 Interval between last blocking Minutes No 00n...59n = 0 till 59 minutes - error and read-out. Hours 01h...23h = 1 till 23 hours Days 01d...06d = 1 till 6 days Weeks 01...
10.5 Test cycle The test cycle can be used to activate the test modes. These test modes can, for example, be used to set the CO2 value at full and at partial load or to check the air pressure differential. Use parameter 201 to activate the test cycle. The test cycle is shown on the display. Each test setting can be recognized by the first letter on the display. Fig. Example Hi-setting test cycle 62 Fig.
11 Maintenance The water heater needs maintenance at least once a year. The maintenance interval is determined by the water quality, the average burning time each day and the set water temperature. On the operator interface, the maintenance interval can be set as a reminder. The display shows Src when the pre-set interval has elapsed. To determine the correct interval, A.O. Smith recommends to do a system check on both the water and the gas side, three months after installation.
9. 10. 11.2 Make sure the gas supply pressure is correct, refer to Gas supply pressure (see section 8.9.3). Make sure the CO2 value is correct, refer to CO2 value (see section 8.9.4). Preparation Isolate the water heater from the mains (see section 4.3.2) before you start maintenance tasks. 11.3 Water-side maintenance To do water side maintenance: • • 11.3.1 Descale the tank (see section 11.3.1) Clean the condensate drain (see section 11.3.2) Descale the tank To descale and clean the tank: 1. 2. 3.
6. 7. 8. Make sure that there is no grit or other blockages in the drain pipe (3). Make sure that the slope of the drain pipe is correct; 5 mm/m. Install the condense trap onto the condensate drain. Fig. Condensate drain 1. Condensate drain 2. Condense trap 3. Drain pipe 3 11.4 2 1 Gas-side maintenance Do gas side maintenance when the water heater does not operate correctly, the air pressure differential is not correct and/or the CO2 value is not correct. To do gas side maintenance: • • 11.4.
Remove the burner: 6. 7. c n Loosen the four nuts (5) to disconnect the burner assembly (6) from the combustion chamber (7). Take the burner assembly out of the combustion chamber. Caution Be carefull, the burner can be hot Caution Always replace the seal after removal of the burner Note Mind the ground cable! Fig. Remove the burner assembly 5. Nuts 6. Burner assembly 7. Combustion chamber 5 7 6 5 Disassemble the burner: 8. 9. 10. 11. 12. 66 Remove the flame rod (11) from the adapter (12).
Fig. Disassemble the burner assembly 15 8. Non return valve 9. Bolts 14 10. Hot surface igniter 11. Flame rod 12. Adapter 13 13. Gasket 12 14. Burner 15. Burner flange 10 9 8 9 11 Use compressed air to remove all contamination from the outside to the inside of the burner (7). Clean the combustion chamber 11.4.2 Use a vacuum cleaner and a soft brush to clean the combustion chamber (1) of the heat exchanger. Fig. Combustion chamber 1 Assemble the burner 11.4.
Note If necessary, replace the cleaning opening cover with gasket and bolts. You can order a clean out service kit at your supplier. Look at the data plate for the correct ordering information. Refer to the figures in Clean the burner (see section 11.4.1) to assemble the burner: 1. 2. 3. 4. 5. n Place the burner in the burner flange. Connect the adapter with four bolts to the burner flange. Install the hot surface igniter and the flame rod on the adapter.
After that: 3. 4. 5. 6. 7. 8. 9. Fill the water heater (see section 8.9.1). Make sure the air pressure differential is correct, refer to Air pressure differential (see section 8.9.2). Make sure the gas supply pressure is correct, refer to Gas supply pressure (see section 8.9.3). Make sure the CO2 value is correct, refer to CO2 value (see section 8.9.4). Turn on the water heater (see section 4.2). Set parameter 211 to rst, refer to Settings (see section 10). Press [RESET]. The water heater goes to OFF mode.
Installation, Maintenance and Service part
12 Troubleshooting 12.1 Errors and warnings The water heater can have three different kinds of errors and warnings: • • • n General errors (see section 12.1.1), which are not displayed Displayed errors (see section 12.1.2), which are divided in two different groups: Lock out errors: when the cause is removed, you can reset the error to resume operation. The displayed code and the back-light of the display blink.
Indication Cause Measure Water leakage There is a leakage from a threaded water connection. Tighten the threaded connection. There is a condensate leakage Make sure that the condensation water discharge is working properly. If necessary, correct the water discharge. There is a leakage from another nearby water heater or pipe segment. Trace the leakage. There is a leakage from the water heater Contact the supplier of your water heater. tank. Explosive ignition The gas supply pressure is incorrect.
Indication Cause Measure CO2 value (at full load) The unit is not set for the correct gas type • Make sure that the gas type corresponds with the information on the rating plate • Make sure if the venturi restrictor has the correct diameter, refer to Gas details (see section 13.3). Contaminated venturi Remove any contamination from the venturi inlet. Leakage between venturi and flexible venturi connector • Make sure that the flexible venturi connector is not damaged.
Code and description Cause Measure C05 (blocking error) Control error Content EEPROM not correct. Reset the controller. If the error reappears, contact your supplier. E01 (blocking error) Temperature error The temperature in the tank is above 90ºC. • Tap off water, so the temperature drops in the water heater. • Reset the controller. • Make sure that there is no scale on the temperature sensor. If necessary, replace the sensor.
Code and description Cause Damaged wiring/closed circuit. F03 (lock out error) Air proving switch error Switch is closed when fan is not running. Air proving switch defect. 0312266_INNOVO_UKUK_V3.0, 2017-02-10 Measure • Make sure that the wiring, between the air proving switch and the control, is connected and not damaged. • If necessary replace the wires or reconnect the wires. Reset the controller, when wires are replaced or reconnected. • Make sure that the air proving switch works properly.
Code and description Cause Hoses are damaged. F03 (lock out error) Air proving switch error Switch is not closed when fan is running during prepurge. Measure • Make sure that the hoses, between the air proving switch and fan and the air proving switch and gas control valve are not damaged and reset the controller. • If necessary replace the hose(s) • When the hose(s) are replaced and reconnected, reset the controller. Wiring is damaged.
Code and description Cause Measure F04 (lock out error) Ignition error No gas. • Make sure that the main gas supply valve is open. If necessary, open the valve. • Make sure that the manual gas supply valve, before the gas control valve, is open. If necessary, open the valve. • Make sure that the gas supply pressure to the gas control valve is correct, refer to Gas supply pressure (see section 8.9.3). Air in the gas pipes. • Bleed the air out of the gas pipe.
Code and description Cause Measure F05 (lock out error) Flame error Recirculating flue gases due too incorrect roof or wall flue terminal. • Make sure the flue terminal is installed correctly, refer to Venting system (see section 8.7). If necessary, connect the correct flue terminal. • Make sure that the terminal is installed correctly, refer to Venting system (see section 8.7). If necessary connect the flue terminal correctly.
Code and description Cause Measure S02 (blocking error) Sensor error Sensor is not (correctly) connected. • Make sure that the connector is connected to J3. • Make sure that the wire is connected to the sensor. Damaged wiring and/or defective sensor. Replace the wiring and/or sensor. Sensor is not (correctly) connected. • Make sure that the connector is connected to J3. • Make sure that the wire is connected to the sensor. Damaged wiring and/or defective sensor. Replace the wiring and/or sensor.
12.1.3 Warnings n Note For the coding of the connections, refer to the Electrical wiring diagram (see section 13.4). Indication Cause Remark Src Service is required The water heater exceeded the pre-set service interval. The water heater operates, but displays this warning. Periodic maintenance is a part of the Warranty. When you do not obey this condition, the warranty will void. Ano Anode protection is not working The water heater runs, but there is no anode protection for the tank.
13 Appendices 13.1 Technical details Description Unit IR-12-160 IR-20-160 IR-12-200 IR-20-200 IR-24-245 IR-32-245 IR-24-285 IR-32-285 IR-32-380 Capacity l 160 200 245 285 380 Empty Weight kg 95 106 120 136 155 Maximum floor load kg 255 306 365 421 535 Maximum operating pressure - installation kPa (bar) 550 (5.5) 550 (5.5) 550 (5.5) 550 (5.5) 550 (5.
13.
0312266_INNOVO_UKUK_V3.
13.3 Gas details Description Unit IR-12-160 IR-12-200 IR-20-160 IR-20-200 IR-24-245 IR-24-285 IR-32-245 IR-32-285 IR-32-380 Diameter of the venturi restrictor mm 3.95 3.95 3.95 3.95 Nominal Load (gross) kW 12.1 20.0 24.4 32.2 Nominal output kW 11.7 (12-160) 19.1 23.5 (24-245) 23.8 (24-285) 30.7 (32-245) 31.0 (32-285) Gas category 2H (G20) 11.9 (12-200) 31.3 (32-380) Supply pressure mbar 20.0 20.0 20.0 20.0 CO2 (full load) vol% 9.3 ± 1.0 9.3 ± 1.0 9.3 ± 1.0 9.3 ± 1.
13.3.1 Energy labeling Description Unit IR-12-160 IR-12-200 IR-20-160 IR-20-200 Load profile - XL XL XL XL Energy efficiency class ( Energy label) - A A A A Energy efficiency % 92 94 92 91 Daily electricity consumption kWh 0.175 0.181 0.172 0.182 Daily fuel consumption kWh GCV 20.526 19.924 20.661 20.
13.4 Cable colors: Electrical wiring diagram Terminal block connections: C. Hot surface igniter M. Earth connection 1. Brown A. Earth D. Gas control valve mounting plate 2. Blue N. Neutral E. External ON mode switch P. Earth connection 3. Yellow/Green L. Phase input F. Additional error signal (max. 5A) burner flange G. Isolating transformer Q. Earth connection H. Control switch housing J. Display R. Temperature sensor K. Fan S. Pressure switch 4. Black 5. White 6. Red 7.
13.5 Declaration of conformity 0312266_INNOVO_UKUK_V3.
13.6 Warranty To register your water heater, you can complete and return the enclosed warranty card. You can also register your water heater on-line through the A.O. Smith website. Article 1: General warranty If, after verification and at the sole discretion of A.O. Smith, a component or part (with exclusion of the glass lined steel tank) of a water heater supplied by A.O.
Article 4: Exclusions The warranty set out in Articles 1 and 2 will not apply in the event of: • • • • • • damage to the water heater caused by an external factor; misuse, neglect (including frost damage), modification, incorrect and/or unauthorised use of the water heater and any attempt to repair leaks; contaminants or other substances having been allowed to enter the tank; the conductivity of the water being less than 125 μS/cm and/or the hardness (alkaline earth ions) of the water being less than 1.
Installation, Maintenance and Service part
Index I Installation....................................... 37 L LCD display...................................... 20 A About this manual............................... 7 Anode warning.................................. 23 Appendices.......................................81 P Preface.............................................. 3 T B Buttons............................................ 20 C Condensate drain.........................35, 41 Control switch...................................19 Controller...
Installation, Maintenance and Service part
