28 30 50 60 Installation User and Service Manual
www.aosmithinternational.
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 © 2008 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 SGS
gis Table of contents 1 Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - 9 1.1 1.2 1.3 1.4 1.5 1.6 1.7 2 - - - - - - - - - - - - - - - - - - - - - - - -9 -9 -9 10 10 10 11 Working principle of the appliance- - - - - - - - - - - - - - - 13 2.1 2.2 2.3 2.4 2.5 2.6 2.
Table of contents 7.4 7.5 7.6 8 Status of the appliance - - - - - - - - - - - - - - - - - - - - - 61 8.1 8.2 8.3 8.4 8.5 8.6 9 Introduction - - - - - - - - - Operating modes - - - - - - Error conditions - - - - - - - Service condition - - - - - - Q/T Sensor warning - - - - - Collector temperature warning- - - - - - - - - - - - - - - - - - - - - - - 61 - 61 - 62 - 62 - 62 - 62 Starting and running - - - - - - - - - - - - - - - - - - - - - - 63 9.1 9.2 9.
14 Maintenance frequency - - - - - - - - - - - - - - - - - - - - 95 14.1 14.2 15 Performing maintenance - - - - - - - - - - - - - - - - - - - - 97 15.1 15.2 15.3 15.4 15.5 15.
Table of contents 8 Instruction manual SGS
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 SGS appliance. The SGS appliance is a condensing boiler with a fan in the air intake. The appliance is always supplied including a storage tank fitted with a heat exchanger connected to a solar energy source. The SGS can be installed as either an open or room-sealed appliance.
1 gis Introduction Furthermore, the installation must comply with the manufacturer's instructions. Note Later amendments and/or additions to all regulations, requirements and guidelines published on or prior to the moment of installing, will apply to the installation. 1.4 Target groups The three target groups for this manual are: • (end) users; • installation engineers; • service and maintenance engineers. Symbols on each page indicate the target groups for whom the information is intended.
gis 1.7 Overview of this document Chapter Target groups Description Working principle of the appliance This chapter describes the working principle of the appliance. Installation This chapter describes the installation activity to be completed before you start the appliance for the first time. Conversion to a different gas category This chapter describes the activities required to convert the appliance to a different gas category. Filling This chapter describes how to fill the appliance.
1 12 Introduction gis Instruction manual SGS
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; • Protection for the solar heating system. The figure shows a cut-away view of the appliance. In this appliance, the cold water enters the bottom of the tank through the cold water inlet (14).
2 Working principle of the appliance gis Cut-away view of the appliance Legend Only applicable numbers are mentioned. 1. cover 2. hot water outlet 3. electrical connector block 4. electronic controller 5. pressure switch 6. control panel 7. temperature sensor T1 8. combustion chamber 9. anode 10. tank 11. heat exchanger 12. inspection and cleaning opening 13. temperature sensor T2 14. cold water inlet 15. drain valve 16. gas control 17. burner 18. fan 19. air supply hose 20. hot surface igniter 21.
gis • Tset Tset is the the required water temperature that has been set on the appliance (11.4.1 "Setting the water temperature via the SET POINT MENU"). As soon as Tnet falls below Tset, the water heating via the solar heating system is started, however, only if the temperature of the heating fluid (S1) is a certain (adjustable) value higher than the temperature measured at the appliance (sensor S2). As soon as (Tnet = Tset = Tsolar limit), heating via the solar heating system is stopped.
2 2.4 Working principle of the appliance gis Protection for the appliance 2.4.1 Introduction The electronic controller monitors the water temperature, helps ensure the safe use of the solar heating system, and ensures safe combustion. This takes place using: 2.4.
gis 2.4.5 Fan The fan (18) provides an optimum air supply when there is a heat demand. As a safety feature, the fan ensures that any gases present in the combustion chamber are removed, both before and after combustion. We refer to this as pre- and post-purge. The fan speed is continuously monitored by the electronic controller (4). The electronic controller takes control if the speed of rotation varies too much from the set value. 2.4.
2 Working principle of the appliance 2.5.2 gis Vented installation With a vented installation, excess pressure is taken up by the open cold water head tank. The height of the head tank determines the working pressure in the water heater, which may not exceed 8 bar. The installation must also be fitted with a vent pipe from the hot water pipe, that opens into the cold water tank. Ideally, the vent pipe should discharge into a separate tundish/drain or otherwise to the open cold water head tank.
gis 2.7 Safety of the solar heating system 2.7.1 Expansion vessel The solar heating system must be equipped with an expansion vessel (16). An expansion vessel serves to limit pressure variations in the system. The expansion vessel in the solar heating system can withstand a maximum pressure of 6 bar. The supply pressure to the expansion vessel depends on the static head of the system. Besides the expansion vessel, the system is protected from overpressure by an expansion valve (2.7.2 "Expansion valve").
2 20 Working principle of the appliance gis Instruction manual SGS
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 is Installation 3.3.1 Air humidity and ambient temperature The boiler room must be frost-free, or be protected against frost. The table shows the environmental conditions that must be adhered to for correct functioning of the electronics present in the appliance to be guaranteed. Air humidity and ambient temperature specifications Air humidity and ambient temperature 3.3.2 Air humidity max.
is 3.3.4 Appliance working clearances For access to the appliance, it is recommended that the following clearances are observed: • 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 rigid anode(s), or - 50 cm if using flexible anode(s). If the available clearance is less than 100 cm, flexible magnesium anodes can 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 See the table.
is Dimensions (all dimensions in mm, unless otherwise stated) Dimen Description sion SGS 28 SGS 30 SGS 50 SGS 60 A Total height 1485 2005 2005 2005 C Position on pallet 490 490 490 490 D Appliance diameter 705 705 705 705 E Depth 925 925 925 925 F Width 850 850 850 850 G Diameter of chimney flue 80/125 100/150 100/150 100/150 H Height of chimney flue 1460 2000 2000 2000 Hx x position of chimney flue outlet 265 265 265 265 Hy y position of chimney flue ou
3 is Installation 3.4.3 Gas data Gas data Description II2H3+ Unit SGS 28 SGS 30 SGS 50 SGS 60 Injector orifice diameter mm 4.90 5.10 7.00 7.10 (1) = Blank plate (2) = Burner pressure regulator 1 or 2 2 2 2 2 Nominal load (gross calorific value) kW 32.1 34.5 52.6 63.2 Nominal output kW 30.5 32.7 48.8 59.6 Supply pressure mbar 20 20 20 20 Burner pressure mbar 8.5 8.5 8.5 11.5 m3/h 3.1 3.3 5.0 6.0 Injector orifice diameter mm 2.50 2.60 3.40 3.
is 3.5 Installation diagram This figure shows the installation diagram. This diagram is used in the sections in which the actual connection process is described.
3 is Installation Legend 19. float valve Only applicable numbers are mentioned. 23. pressure valve (mandatory) 1. pressure-reducing valve (mandatory if the mains 26. air bleed (mandatory) water pressure exceeds 8 bar) 37. combined Q/T sensor (optional) 3. T&P valve (mandatory) 38. solar heating system pump station (modulating 4. stop valve (recommended in pipe C and mandatory in mandatory) pipe A) A. cold water supply 5. non-return valve (mandatory) B. hot water supply 6. circulation pump (optional) C.
is 3.6.3 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. Fit two stop valves for service purposes (4). 4.
3 is Installation 3.7.4 Condensation drainage 1. Fit a sloping wastewater pipe to the siphon (13) for condensation drainage and connect this to the wastewater discharge in the boiler room. Caution All fittings behind the siphon must be condensation-resistant. 3.8 Gas connection Warning The installation should be carried out by an authorised installation engineer, in compliance with general and local regulations (1.3 "Regulations").
is 3.10.2 Requirements for flue gas discharge materials Warning The installation should be carried out by an authorised installation engineer, in compliance with general and local regulations (1.3 "Regulations"). Depending on the approved installation types, there are several alternatives for connecting the air supply and flue gas discharge. The appliances are approved for installation types B23, C13, C33, C43, C53 and C63. The figure and table give information about these appliance types.
3 is Installation Types of appliances C43 C13 B23 C33 C53 IMD-0468 R0 32 Instruction manual SGS
is Explanation of type of appliance Type of appliance Description B23 Air for combustion is drawn from the boiler room. C13 Concentric and / or parallel wall flue terminal C33 Concentric and / or parallel roof flue terminal C43 Appliances on common air supply and flue gas discharge (concentric and / or parallel) in multi-storey building. C53 Air supply and flue terminal types mixed. C63 Appliances supplied without flue components and / or terminal.
3 is Installation The following example illustrates how to use the table. Practical example of concentric flue gas discharge Example The figure shows a SGS 30 installation. The appliance must be fitted with 25 m of concentric pipe (C13/C33) and four 90 degree bends. We need to check whether this configuration complies with the requirements stated in the table.
is Concentric wall flue terminal specifications C13 Specification Description Wall flue terminal set: Art. No. • 1X Wall flue terminal (incl.
3 is Installation Appliance Diameter1 Maximum total length Lequivalent 90º bend Lequivalent 45º bend SGS 28 100mm 100m 4.6m 1.2m SGS 30 130mm 100m 2.4m 1.4m SGS 50 130mm 100m 2.4m 1.4m SGS 60 130mm 100m 2.4m 1.4m 1) Parallel systems with diameter of 130mm or 150mm. If the maximum total length for a diameter of 130mm is insufficient, 150mm diameter must be used. Any diameter enlargement must be carried out on both air supply and flue gas outlet.
is The longest pipe must be used to check the maximum length. In this case, the chimney pipe is the longest. This is 25 metres. This 25 metres is the sum of pipe sections 1, 2, 3, 4 and 5. The length of the transition piece can be ignored. The total number of bends used in the flue gas outlet and air supply is 8. The bend in the transition piece can be ignored. According to the table, 4.6 metres must be added for each bend. This brings the total pipe length to: (4.6 x 8) + 25 = 36.8 + 25 = 61.8m.
3 is Installation Connector block Legend A. screws B. protective cap C. connector block A B A 1 C 24 IMD-0077 R2 In preparation, you must first remove the two plastic covers and the protective cap of the electrical section. 1. Undo the screws of the plastic covers. 2. Carefully remove the covers from the appliance. The electrical section is now visible. 3. Loosen the 2 screws (A) of the electrical section, and remove the protective cap (B) from the electrical section.
is 3.11.3 Connecting the mains voltage The appliance is supplied without a power cable and isolator. Note In order to receive electrical power, the appliance has to be connected to the 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. The power cable must have cores of at least 3 x 1.0 mm2. Warning Leave the appliance isolated until you are ready to start it up. 1.
3 is Installation 3.11.7 Connecting an extra ON mode switch ("Tank ON") Tank ON is a facility for connecting an external ON/OFF switch. In the OFF position, the programmed operating state is active. In the ON position, the programmed operating mode is overruled, and the "ON mode" is active. 1. Connect cables (X1 and X2) to terminals 5 and 6 as indicated in the table (3.11.2 "Preparation"). 2. Fit the cable in the strain relief. 3. If you have no more connections to make: 3.11.
is 3.12.1 Preparation Undo the screws of the cap over the terminal block of the collector. This has the following terminals: 2 3 4 1 2 J3 9 3 10 - - - - - - 11 12 13 14 15 16 17 18 19 20 Sensor S2 1 8 - Sensor S3 7 M Sensor S2 6 N Sensor S3 5 L2 Semsor S1 4 N n.a. 3 L1 4 1 2 3 4 1 2 3 4 J12 3.12.2 n.a. Sensor S1 2 Sensor S4 - Power 5 V - n.a. - n.a. N n.a. L Modulating pump n.a. Pump ON/OFF n.a. 1 n.a.
3 is Installation 3.12.5 Connecting tank sensor Note This sensor is already mounted in the tank prior to delivery. The sensor is mounted between the inlet and outlet of the heat exchanger. However, you must still connect the lead to the solar heating system controller. 1. Connect the sensor lead with the blade connectors to the sensor. 2. Connect the other end to terminals 2 and 4 of J14. 3. Fit the cables in the strain relief. 4. Continue (3.12.7 "Connecting communication cable"). 3.12.
is 3.12.9 Connecting Q/T sensor Note You can optionally add a Q/T sensor to the installation. This enables you to calculate the energy contribution of the system. For more information or to order the Q/T sensor, please contact your supplier. 1. 2. 3. 4. 5. 6. 3.13 Checking the supply pressure and burner pressure Connect the 5V to J12-1. Connect sensor S4 to J12-2. Connect earth to J12-3. Connect the "flow signal" to J12-4. Fit the cable in the strain relief.
3 Installation 3.13.1 is Preparation To check the supply pressure and burner pressure, proceed as follows: 1. Isolate (10.3 "Electrically isolating the appliance") the water heater from the power supply. 2. Undo the screws of the plastic covers. 3. Carefully remove the covers from the top of the appliance. The electrical section is now visible. 3.13.2 Procedure to check pressures 1.
is 7. 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. 8. Once the display shows the text RUNNING you must wait about 1 minute before reading the dynamic pressures (the fan needs this time to run up to full rotational speed). 9.
3 Installation 3.13.4 is Finalising 1. Shut off the gas supply. 2. Disconnect the two pressure gauges and retighten the sealing screws in the test nipples. 3. Replace the cover. Note Before starting-up the appliance, take time to fill in the warranty card supplied with the appliance. This enables us to guarantee the quality of our systems, and to further enhance our warranty procedure. Please return this card as soon as possible.
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. Orifice assembly Legend 1. connector 2. gas coupling 3.
4 is Conversion to a different gas category 1. Isolate the water heater from the power supply (10.3 "Electrically isolating the appliance"). 2. Shut off the gas supply. 3. Undo the screws of the plastic covers. 4. Carefully remove the covers from the top of the appliance. 5. Detach the connector (1) that connects the leads of the hot surface igniter and the flame probe to the controller. 6. Detach the three-part gas coupling (2) adjacent to the burner. - Detach the air supply hose (3).
is 10. Check whether there is a burner pressure regulator (7) attached to the top of the gas control, or simply a blank plate (8). Note In the event of the supply pressure for a gas category being the same as the burner pressure (3.4.3 "Gas data"), the gas control must be fitted with a blanking plate with a cork gasket. A burner pressure that deviates with respect to the supply pressure requires a burner pressure regulator with rubber gasket to be used.
4 50 Conversion to a different gas category is Instruction manual SGS
gis 5 5.1 Installation diagram Filling This figure shows the installation diagram. This diagram is used in the sections in which the actual connection process is described.
5 Filling gis Legend 19. float valve Only applicable numbers are mentioned. 23. pressure valve (mandatory) 1. pressure-reducing valve (mandatory if the mains 26. air bleed (mandatory) water pressure exceeds 8 bar) 37. combined Q/T sensor (optional) 3. T&P valve (mandatory) 38. solar heating system pump station (modulating 4. stop valve (recommended in pipe C and mandatory in mandatory) pipe A) A. cold water supply 5. non-return valve (mandatory) B. hot water supply 6. circulation pump (optional) C.
gis 6. Completely fill the appliance. When a full water jet flows from the nearest draw-off point, the appliance is full. 7. Bleed the entire installation of air, for example by opening all draw-off points. 8. The appliance is now under water supply pressure. There should be no water coming out of the P-valve (23). If this does happen, the P-valve might be defective or incorrectly fitted. 5.4 Filling solar heating system 5.4.
5 gis Filling 7. Stop the glycol pump as soon as the pressure gauge on the pump station begins to rise. 8. Completely bleed the system of air at the air bleed point (26, see installation diagram). 9. Close the air bleed when no further air comes out. 10. Repeat steps 6 through 9 until glycol runs out of the air bleed (26). Note The system does not need be filled to a certain pressure. The pressure in the system will increase when the fluid heats up and expands. 11. Switch off the glycol pump. 12.
gis 6 6.1 Installation diagram Draining This figure shows the installation diagram. This diagram is used in the sections in which the actual connection process is described.
6 gis Draining Legend 19. float valve Only applicable numbers are mentioned. 23. pressure valve (mandatory) 1. pressure-reducing valve (mandatory if the mains 26. air bleed (mandatory) water pressure exceeds 8 bar) 37. combined Q/T sensor (optional) 3. T&P valve (mandatory) 38. solar heating system pump station (modulating 4. stop valve (recommended in pipe C and mandatory in mandatory) pipe A) A. cold water supply 5. non-return valve (mandatory) B. hot water supply 6. circulation pump (optional) C.
gis 6. Isolate the water heater from the power supply by putting the isolator between the appliance and the mains power supply to position 0. 7. Shut off the gas supply (10). 8. Close the stop valve (11) in the hot water pipe. 9. Close the supply valve (4) in the cold water supply (A). 10. Open the drain valve (9). 11. Bleed the appliance (or installation) so that it drains completely. 6.3 Draining vented installations 1. Activate the MENU with . 2. Position the cursor in front of OFF. 3.
6 6.4 gis Draining Draining solar heating system 6.4.1 Draining glycol-filled system Note No special safety measures are required when working with the diluted glycol solution specified by the manufacturer. For more information about the fluid, please contact the manufacturer. 1. Activate the MENU with . MENU »OFF ^ ON È WEEK PROGRAM 2. Position the cursor in front of OFF. 3. Confirm OFF with . 4. Wait until the fan has stopped. The symbol is then dimmed.
gis 7 7.1 The control panel Introduction Topics covered in this chapter: • a Controls; • Meaning of icons; • Electronic controller ON/OFF switch; • Navigation buttons; • PC connection. 7.2 »START OPERATION ^ CHANGE SETPOINT È Tset=70ÉC 7.3 Controls Meaning of icons The table explains the meanings of the icons. The figure shows the electronic controller.
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: 8.2.3 EXTRA In this mode, one extra period is programmed and activated.
8 2. The current time falls outside a set time period of the week program. The figure shows the display with the following information: - line one: the text PROG; - line two: the time, the day and T1 and Tnet alternately (9.3 "The appliance's heating cycle"); - line three: the next scheduled switch-on time; - line four: displays the text PERIOD ACTIVATED. In all modes, the temperature may at any moment drop below the desired temperature. The appliance then enters a heating cycle.
gis 9 9.1 Starting and running Introduction Topics covered in this chapter: • Starting the appliance. • The appliance's heating cycle. Note The first time the appliance is started, you must enter (12.8 "Solar heating system configuration") the settings of the solar heating system 9.2 Note The first time the appliance is started, you must set (12.8.2 "Setting the heating fluid type in the solar heating system") the heating fluid type of the solar heating system. 5.
9 gis Starting and running The complete cycle is explained in the following example, which assumes the appliance is in the basic mode ON. Note The same heating cycle applies to the other operating modes. Once the appliance starts, it will run through the following steps: 1. The water temperature drops below the set temperature of (for example) 65°C. The electronic controller detects a demand and starts the heating cycle. - The icon is activated. - The message HEAT DEMAND appears. 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. symbol is 5. Switch the appliance OFF (position 0) using the ON/OFF switch on the control panel. 10.
10 66 Shutting down gis Instruction manual SGS
gis 11 Main menu 11.1 Introduction The MENU is reached by pressing the electronic controller. button on the MENU »OFF ^ ON È WEEK PROGRAM EXTRA PERIOD SETTINGS The main menu comprises: • • • • • OFF Select this option if you wish to turn off (10 "Shutting down") the appliance for a brief period, but do not wish to drain it. In this mode, the frost protection is active. This prevents water from freezing in the appliance. ON In this mode, the appliance continually responds to the hot water demand.
11 11.4.2 Setting water temperature during ON mode The water temperature can also be directly adjusted when the appliance is in the "ON mode". Simply use: • • • to increase the value; to decrease the value. Confirm with gis Main menu . ON 13:45 Thursday 65ÉC Tset»65ÉC 11.7 Changing the appliance's standard week program Note First fill-in the desired week program on the supplied week program card.
gis The display shows the menu for the week program, see the figure below. With the default setting, the program switches on and off every day at 00:00 and 23:59 hours respectively, the water temperature is 65°C and the pump is switched on (P).
11 11.7.4 Week program: setting the programcontrolled pump 1. If required, a pump can be controlled during the period. Use and to set PUMP ON . The pump ensures a regular circulation of hot water in the hot water pipes. You can skip this step if you there is no pump in your hot water circuit. Confirm with . The cursor moves to SAVE. ON SU 08:15 OFF SU 12:45 Tset 75ÉC PUMP»ON SAVE 2. Confirm with The display shows the menu for the week program. The cursor points to the active period.
gis 11.9 Deleting times from a week program All switch-on/off times are shown sequentially in the display. Assume that the switch-on/off times for the appliance are programmed as in the figure. DAY ON »SU OFF SU ON SU TIME Tset 08:15 75ÉC P 12:45 18:00 75ÉC P OFF SU 22:00 .................... .................... OFF SA 23:59 INSERT DELETE START OPERATION To delete a period, proceed as follows: 1. : WEEK PROGRAM | PROGRAM OVERVIEW. Confirm with . MENU OFF ^»ON È WEEK PROGRAM 2.
11 gis Main menu If the water temperature becomes too low during the extra period (11.11 "Programming an extra period"), the appliance will run through the heating cycle (9.3 "The appliance's heating cycle") and fall back into the extra period. The same settings can be made for an extra period as for a week program (11.7 "Changing the appliance's standard week program") period. 11.11 Programming an extra period Setting the switch-off time 1. Use and is 012. to set the hours.
gis 11.12 Settings 11.12.2 Setting day and time Using the SETTINGS option, you can adjust certain settings and read certain appliance data: To enter the time and day: • • Adjustable settings - Language of the menu. - Current day of week and time. Displayable appliance specifications, this category is only relevant to the installation engineer and/or service and maintenance engineer 1. Call up the menu for entering the day and time as follows: 2. : SETTINGS. Control range (water temperature).
11 gis Main menu The display shows the sub-menu for displaying appliance specifications. Confirm the minute setting with TIME SPECIFICATIONS 15»45 »REGULATION INTERVAL ^ IGNITION SPEED È WORKING SPEED The time has been set. Note The appliance takes no account of daylight saving. 11.12.3 Displaying appliance specifications Note This category is solely intended for the installation engineer and/or service and maintenance engineer. 3.
is 12 Service program 12.1 Introduction 12.3 Displaying the error history The service program is used by the installation engineer or service and maintenance engineer for: Display the error history as follows: • Setting the hysteresis • Displaying the error history • Displaying the appliance history • Display the selected appliance • Setting the service interval • Setting legionella prevention The controller will display an overview of "Blocking errors" and "Lock out errors".
12 is Service program • APPLIANCE HISTORY BURNINGHOURS 000410 ^IGNITIONS 001000 ÈFLAME ERRORS 000021 IGNIT ERROR 000013 12.5 Display the selected appliance Call up the menu for displaying the appliance selection as follows: • : SELECT APPLIANCE The appliance number can be found on the rating plate. ANTI LEGIONELLA »YES NO • Select NO to switch legionella prevention off. • Select YES to switch legionella prevention on.
is 12.8.1 Setting the drain-back tank 12.8.4 Setting the solar limit temperature Use this menu to specify whether the solar heating system is equipped with a drain-back tank for the heating fluid. Call up the menu as follows: The solar limit temperature is the maximum water temperature obtained in the appliance via the solar heating system (measured by sensor T1). • This value can be set between 65 ... 80 °C. The default value is 65 °C. :SETTINGS SOLAR | DRAIN BACK The default is NO.
12 • Service program is : SETTINGS SOLAR | QT SENSOR QT SENSOR YES »NO 12.8.7 Reading the energy contribution of the solar heating system This option enables you to read out how much energy the solar heating system supplies. For this data to be displayed, the installation must be equipped with a QT sensor (12.8.6 "Setting the QT sensor yes/no"). 3 values are reported on the display: • ACTUAL, actual energy: the amount of energy currently being supplied.
gis 13 Troubleshooting 13.1 IA distinction is made between: n • General errors t General errors are not reported on the display. r General errors are: o - Gas smell d u - Display does not light up c - Insufficient or no hot water. t - Water leakage i - Explosive ignition. o The manual includes a table with general n errors (13.2 "Troubleshooting table for general The manual includes a table of error messages that can appear on the display (13.2 "Troubleshooting table for general errors").
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 Warning Close the main gas valve immediately. Warning Do not operate any switches. Remark Warning Contact your installation engineer or local gas company immediately. Warning No naked flames. Warning Ventilate the boiler room.
is Symptom Cause Solution Remark Water leakage Leakage from a water connection (threaded) Tighten the threaded connection If the leak persists, consult your installation engineer Condensate leakage Check that the condensation water discharge is working properly.
is Symptom Cause Solution Remark Glycol leakage Leakage from a fluid connection (threaded) Tighten the threaded connection. If the leak persists or a component needs replacement, consult your installation engineer Leakage from a component 1. Tighten component joints Leakage from solar heating system Consult the supplier and/or manufacturer Instruction manual SGS 2.
is 13.3 Troubleshooting table for displayed errors Displayed errors Code + Description Cause S01 (blocking error) Sensor is not (correctly) Connect the sensor lead to JP3 connected Open circuit from Damaged cable or temperature sensor T2 defective sensor at bottom of the tank S02 (blocking error) Replace the sensor Sensor is not (correctly) Connect the sensor lead to JP5 connected Open circuit in sensor 1 Damaged cable or of temperature sensor defective sensor T1 at the top of the tank(1).
is Code + Description Cause S07 (blocking error) Open circuit from temperature sensor S2 at bottom of tank Sensor is not (correctly) Connect the sensor lead to J14 (port 2 and 4) of the solar controller See the SGS electrical diagram (17 "Appendices") connected S08 (blocking error) Open circuit from temperature sensor S1 in the collector Sensor is not (correctly) Connect the sensor lead to J13 (port 2 and 4) of the solar controller See the SGS electrical diagram (17 "Appendices") connected Damaged cabl
is Code + Description Cause Solution Remark Replace sensor S4 To replace the necessary parts, you must contact your installation engineer S17 (blocking error) Sensor is not (correctly) Replace sensor S2 connected Short circuit in temp. sensor S1 at bottom of tank To replace the necessary parts, you must contact your installation engineer S18 (blocking error) Short circuit in temp.
is Code + Description Cause Solution Dirty or blocked fan 1. Check if the fan is dirty Remark 2. Check that the rotor can rotate freely 3. Reset appliance controller Because of a drop in 1. Check the supply voltage, this must be 230 VAC (-15%, +10%). the supply voltage, the 2. Reset appliance controller fan is not running at the correct speed. The F02 entries below are applicable solely to appliances that have a 3-phase fan with frequency controller.
is Code + Description Cause Solution Remark Heat exchanger and/or 3. Measure the pressure differential across the air pressure switch chimney flue is blocked 4. Check the values (2.4.6 "Pressure switch") 5. Check heat exchanger, condensation drainage and/or chimney flue for blockages 6. Clear any blockage that may be present. 7. Reset appliance controller Defective controller 1. Check that the controller is receiving power 2. Check that the controller is correctly connected 3.
is Code + Description Cause Solution Remark F03 (lock out error) Damaged wiring/Open circuit 1. Check the wiring between the pressure switch and the controller If the error cannot be resolved or is persistent, contact your installation engineer To replace the necessary parts, you must contact your installation engineer The pressure switch fails to work correctly 2. If necessary, replace the wiring Pressure switch not closing 1. Check the running speed of the fan (12.
is Code + Description 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 Code + Description 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.
is Code + Description Cause Solution F10 (lock out error) Pressure switch not closing 1. Check the running speed of the fan (12.5 "Display the selected If the error cannot be resolved or is persistent, contact your installation engineer appliance") To replace the necessary parts, you must contact your installation 2. Check that the hoses on the pressure switch and the air supply engineer hose between fan and burner are correctly fitted.
is Code + Description Cause Solution Remark C02 (lock out error) Incorrect reference voltage from the AD converter. 1. Reset electronic controller. To replace the necessary parts, you must contact your installation engineer Error message from the appliance controller. Internal error message • from the appliance controller. • EEPROM read error • Internal communication error Internal error message • from the appliance controller. • Gas valve relay error C03 (blocking error) 2.
is Code + Description 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 oC. 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 1. Check sensor position and wiring.
is 13.4 Displayed warnings Displayed warnings Symptom Cause Solution Remark Q/T sensor not correctly connected Lead(s) loosened or incorrectly connected Appliance runs, but displays a warning 1. Properly connect Q/T sensor and the warning will disappear 2.
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.
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s 15 15.1 Introduction Performing maintenance Caution Maintenance may only by carried out by an approved 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. Solar collector maintenance 5.
15 s Performing maintenance 6. Switch the electronic controller ON by setting the ON/OFF switch to position I. INTERNAL CHECK The display will now show INTERNAL CHECK for about 10 seconds, and will then go to the main menu. MENU »OFF ^ ON È WEEK PROGRAM 7. Activate "ON mode" by going through the following steps: - Press once on the blue arrow ( ) to position the cursor beside ON, then press . - Confirm the selection START OPERATION with . 8. If there is no heat demand, increase Tset (11.
s 15. Test the operation of the overflow valve of the protected cold supply setup. The water should spurt out. 16. Test the overflow operation of the T&P valve. The water should spurt out. 17. Check the drain pipes from the discharge points of all valves and remove any lime buildup that may be present. 18. Drain the appliance (see Draining). 15.3 Water-side maintenance 15.3.1 Introduction The following steps must be carried out on the water side: 1. Checking the anodes. 2.
15 s Performing maintenance 4. Inspect the tank and remove the loose scale deposits and contamination. 5. If the scale cannot be removed by hand, then the appliance will need to be descaled using a descaling agent. Contact the supplier for advice on the preferred descaling agent. 6. 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. Use suitable tools for this. 15.3.
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 Warranty (certificate) i. 16.4 Exclusions gis The appliance is at all times fitted with cathodic protection. If sacrificial anodes are used for this, these must be replaced and renewed when, and as soon as, they are 60% or more consumed. When electric anodes are used, it is important to ensure that they continue to work properly. 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.
is 17 17.1 Introduction Instruction manual SGS Appendices This appendix contains: • Menu structure of the main menu (17.2 "Menu structure") • Appliance electrical diagram (17.3 "Electrical diagram for the appliance") • Electrical diagram, solar heating system (17.
17 is Appendices 17.
is Instruction manual SGS 105
17 17.
is Main control components Main controller terminal strip A Controller 1 X5 B Flame probe 2 X6 C Hot surface igniter 3 - n.a. D Gas control 4 - n.a.
17 17.
is 17.4.1 Solar system electrical diagram legend Solar heating system control components Solar heating system controller terminal strip 1 2 L Power 3 N 4 - n.a. 5 - n.a. - n.a. Extra head pump for solar heating system (ON/OFF) AA Controller BB Extra head pump for solar heating system (ON/OFF) CC Solar heating system pump (modulating) 6 DD Temperature sensor (S1 - solar collector) 8 L1 EE Temperature sensor (S2 - storage tank) 9 N 10 FF Combined Q/T sensor (incl.
17 110 Appendices is Instruction manual SGS
17.5 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. ....
17 112 Appendices is Instruction manual SGS
gis Index A ambient temperature 22 appliance displaying history 75 displaying selection 76 types 9, 21 gas connection 30 gas control 16 general specifications 3 H heat demand 63 heating cycle 14, 63 humidity 22 B burner pressure 43 I C claims 102 connect 30 air supply 30 Alarm OUT 40 cold water side 28, 29 condensation drainage 30 continuous pump 39 flue gas discharge 30 gas 30 hot water side 29 isolating transformer 39 Tank ON 40 Connect Alarm OUT 40 connecting air supply 30 connecting cold water side
Index softlite 16 specifications 24 supply pressure 43 symbol installation engineer 10 service engineer 10 user 10 operating modes EXTRA 61 general 61 OFF 61 ON 61 PROG 61 P packaging 21 PC connection 60 post-purge 63 power cable 39 pre-glow 63 pre-purge 63 pressure switch 17, 63 prog 61 protection 16 push buttons 59 R T target groups 10 ThermoControl 59 controls 59 ON/OFF switch 59 to shut down electrically isolating 65 longer period 65 short period 65 trademarks 3 U running 63 user 10 S W scrolli
