Home

Installation User and Service Manual Release R

1. o Bl Introduction Operating Topics covered in this chapter 5 2 Control panel 5 3 Explanation of the icons 5 4 1 0 II switch 5 5 Control thermostat 5 6 Burner control reset button 5 7 Week timer circuit 5 8 Flue gas backflow safeguard reset button Figure 5 1 shows the control panel The panel consists of a I 0 Il switch a reset button a control thermostat with rotary knob two status LEDs a week timer optional a Power Anode indicator light optional Figure 5 1 The control panel Release R 2 0 Uk S 47 5 3 5 4 5 5 48 9 Explanation of the icons I 0 Il switch Control thermostat e ARR Table 5 1 shows the meanings of the icons on the control panel Table 5 1 Icons and their meaning Icon Name Explanation el VO N switch ON mode OFF mode Reset button Reset burner control Temperature control To set water temperature Tse 1 Week timer Sets the weekly water heating program 2 i Anode indicator Shows Power Anode status Error light Burner control lockout O Power light Burner control on power With the I 0 II switch the appliance is setin ON mode I position OFF mode 0 position or the week timer mode Il position See paragraph 6 2 Operating modes The appliance remains live even when in the OFF mode This ensures the frost protection remains activated w
2. 14 hot water side 26 heating cycle 15 humidity 21 installation types 9 protection 15 icons e 48 ignition 54 biimekpiessire E SS avena 33 e eee a ionisation rod 16 check supply pressure burner pressure 33 abn Ste ay eae ANA AT 3 circulation pipe 27 TREE RR A RA KA 62 claims 66 cold water side 26 27 condensation drainage connect 27 connect mains power 32 circulation pipe 27 mahs swith one Pi es eee See ee 32 cold water side 26 27 maintenance condensation drainage 27 anode ito eel cani DL 62 electrical 31 burner elet di ul 63 gaS 28 carrying out 61 hot water side 26 descaling 62 control thermostat 48 finalising 63 conversion to different gas 36 gas side 63 lime buildup 62 orifice 63 preparation 61 descaling 62 water side 62 dimensions 22 mode document contents
3. 65 10 4 Exclusions 66 10 5 Scope of the warranty 66 10 6 Claims 66 10 7 Limitation of liability State 66 A Appendices sana a ma aa aaa ama aa 67 A 1 Introduction 67 A 2 Electrical diagram SCE 68 A 2 1 Electrical diagram SCE 65 500 LP 68 A 2 2 Electrical diagram SCE 69 IX Index a aaa aaa aaa aa aa aa aaa eee 71 Release R 2 0 Uk 7 AED Instruction Manual SCE AED 1 1 1 About the appliance 0063 1 2 What to do if you smell gas 1 3 Regulations Release R 2 0 Uk Introduction This manual describes how to install service and use the SCE appliance The SCE appliance is a gas fired open water heater without a fan The SCE appliance is fitted with a flue gas backflow safeguard and falls into the appliance category B11BS This information is located on the appliance s identification plate The information in this manual is applicable to types SCE 80 115 80 140 80 180 95 199 95 260 70 360 65 400 65 500 The manner of construction and features of the appliance are in conformance with the European standard for gas fired storage water heaters for the production of domestic hot water ES 89 The appliances are therefore compliant with the
4. 14 The appliance s heating cycle 15 Protection for the appliance 15 2 4 1 Water temperature protection 16 2 4 2 Flue gas backflow safeguard 16 2 4 3 lonisation rod 16 Safety of the installation 16 2 5 1 Unvented installation 16 2 5 2 Vented installation 17 2 5 3 T amp P valve 17 Installation 19 Introduction 19 Packaging eee ee eee 21 Environmental conditions 21 3 3 1 Working clearances 21 3 3 2 Humidity and ambient temperature 21 3 3 3 Maximum floor loading 22 3 3 4 Water composition 22 Technical specifications 22 Installation diagram 24 Water connections Unvented 26 3 6 1 Cold water side 26 3 6 2 Shunt pipe 26 3 6 3 Hot water side 26 3 6 4 Drain valve 26 3 6 5 Circulation pipe 27 Water connections Vented 27 3 7
5. 54 PRE GLOW 54 RUNNING 54 WAITING TIME 54 supply pressure 33 symbol installers eka a SS Se 10 service engineer 10 user 10 0305 899 target groups 10 trademarks 3 user porre Se es he riale 10 waiting time 54 warranty 65 exclusions 66 general 65 installation and conditions of use 65 scope 66 tank 65 water composition 22 stacking 26 27 Instruction Manual SCE
6. 11 OFF 51 draining 44 ON See 2 Sp dace See eS ck na 51 electrical connection 31 operating modes 54 electrical connection block 31 electrical data 24 electrical diagram 68 environmental conditions 21 packaging 21 power cord 32 pre glow 54 protection 15 filing 44 floor loading 22 forms of notation 11 frost protection 48 activation 53 reset button 49 functional description 14 running 54 gas connection 28 safety 16 gas conversion 36 scle cre oe se eee ee ee ay 62 service check 10 service engineer 10 shunt pump 26 27 Release R 2 0 Uk 71 IX Index shutting down brief period 53 disconnecting 53 longer period 53 specifications 22 stacking 26 27 starting up 53 state electrically disconnected 51 HEAT DEMAND 54 IGNITION
7. 53 7 3 3 Shut the appliance down for a longer period 53 The appliance s heating cycle 54 Troubleshooting 55 Introduction 55 Troubleshooting table for general errors 56 Troubleshooting table no hot water 57 Troubleshooting table insufficient hot water 60 Maintenance 61 Introduction 61 Instruction Manual SCE AES 9 2 Preparation for maintenance 61 9 3 Water side maintenance 62 9 3 1 Introduction 62 9 3 2 Checking the anodes 62 9 3 3 Descaling and cleaning the tank 62 9 4 Gas side maintenance 63 9 4 1 Introduction 63 9 4 2 Cleaning the burners 63 9 4 3 Cleaning the orifices 63 9 4 4 Checking the flue baffles 63 9 5 Finalising maintenance 63 10 Warranty Certificate 65 10 1 General warranty 65 10 2 Tank warranty 65 10 3 Installation and conditions of use
8. mera Ae Furthermore the installation must comply with the manufacturer s instructions w 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 The three target groups for this manual are end users e installers e service and maintenance engineers Symbols on each page indicate the target groups for whom the information is intended See Table 1 1 Table 1 1 Target group symbols Symbol Target group Ah End user VE installer SY x Service and maintenance engineer 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 w Note To determine the correct maintenance frequency it is recommended to arrange for the service and maintenance engineer to check the appliance on both the water and gas side three months after installation Based on this check the best maintenance frequency can be determined w Note Regular maintenance extends the service life of the appliance Both the end user and the service and maintenance engineer are responsible for regular maintenance They will need to establish clear agreements on this w Note If the appliance is not regularly maintained the warranty w
9. 2 Fit a non return valve 6 3 Fit a stop valve Hot water side See in Figure 3 2 g Note Insulating long hot water pipes prevents unnecessary energy loss Fit the T amp P valve 6 2 Optional fit a temperature gauge to be able to check the temperature of the tap water 3 Fit a stop valve in the hot water outlet for servicing 4 If a circulation pipe is to be fitted then refer to paragraph 3 7 4 Circulation pipe See in Figure 3 2 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 Fita circulation pump of the correct capacity for the length and resistance of the circulation system 2 Fit a non return valve behind the circulation pump to guarantee the direction of circulation 27 3 Installation ee 3 4 3 8 Gas connection bas Fit two stop valves for service purposes Connect the circulation pipe to the cold water supply pipe W Warning Gas installation may only be carried out by an authorised installer in compliance with the general regulations imposed by the gas company Refer also to paragraph 1 3 Regulations W Caution Make sure that the diameter and length of the gas supply pipe are large enough to supply sufficient capacity to the appliance See in Figure 3 2 1 Fit a gas valve in the gas supply pipe 2 Blow the gas pipe through before use to
10. If the appliance is in the ON mode then the threshold value is selectable via the control thermostat 40 C 70 C AS soon as T water falls below Tse the relevant thermostat control or frost will close and the burner control will register a heat demand The gas control will open and the gas will mix with the air it draws in This mixture is ignited by the glow igniter and the water becomes heated A soon as Twater exceeds Tse the thermostat will open once more The heat demand will cease and the burner control will stop the heating cycle The thermostats have a certain margin both when closing and opening We refer to this margin as the hysteresis The hysteresis cannot be adjusted The burner control monitors the water temperature by means of thermostats and ensures a safe combustion This is achieved by the Water temperature protection the Flue gas backflow safeguard e the lonisation rod 1 The narrow opening in the orifices accelerates the gas flow This causes a partial vacuum The effect of this partial vacuum is to draw the air into the flow the Venturi effect 15 Table 2 1 Temperature protection 2 4 1 Functioning of the appliance AN Ga XI Water temperature protection By means of the frost high limit and safety thermostats the burner control monitors three temperatures related to safety See Table 2 1 Protection Frost thermostat Description If the frost thermostat
11. nipple 6 Switch on the power to the appliance using the mains switch 7 Set the control thermostat to the highest position and start the appliance running by putting the I 0 II switch to I position 8 The heating cycle will start and the burner tray will ignite after a short time 9 Afterthe burner tray has ignited wait for approximately 1 minute before you 10 d 11 start reading the dynamic pressures Use the pressure gauge to read the supply pressure at nipple See Table 3 9 Note Consult the mains gas supply company if the supply pressure is not correct Use the pressure gauge to read the burner pressure at the burner pressure nipple Refer to Table 3 9 Table 3 9 Conversion data for appliance category ll243 DESCRIPTION Unit Data for natural gas gas category 2H SCE SCE SCE SCE SCE SCE SCE SCE 80 115 80 140 80 180 95 199 95 260 70 360 65 400 65 500 Diameter of orifices mm 2 90 3 20 3 20 3 30 2 95 3 20 3 30 3 90 G20 Supply pressure mbar 20 20 20 20 20 20 20 20 Burner pressure mbar 8 5 8 6 7 8 8 5 8 5 9 2 7 8 11 5 Data for LP gas gas category 3 Diameter of orifices mm 1 60 1 70 1 60 1 75 1 50 1 70 1 75 2 25 G30 butane Supply pressure mbar 30 30 30 30 30 30 30 30 Burner pressure mbar G31 propane Supply pressure mbar 37 37 37 37 37 37 37 37 Burner pressure mbar 1 If using a
12. 8 2 Troubleshooting table for general errors Table 8 1 General errors page 1 of 2 Symptom Cause Gas smell Gas leak Leakage from one of the water connections threaded Water leakage Solution ty Warning Immediately close the main gas valve Uy Warning Do not operate any switches Warning No naked flames ty Warning Ventilate the boiler room Tighten the threaded connection Leakage from another nearby water appliance or pipe segment Trace the leak Leakage from the appliance s tank Consult the supplier and or manufacturer Condensation Release R 2 0 Uk Before drawing off too much hot tap water wait until the water in the heater has reached the set temperature Remark wW Note Immediately contact your installer or local gas company If the leak persists consult your installer y Warning y Xx Onderhoud mag alleen worden uitgevoerd door een service en onderhoudsmonteur pe Table 8 1 General errors page 2 of 2 Symptom Cause Solution Remark Explosive ignition Incorrect supply Set the correct supply pressure and or burner pressure see If ignition is not improved consult your installer pressure and or burner 3 11 Checking the supply pressure and burner pressure Poor flame profile pressure Contaminated burner Clean the burner See 9 4 2 Cleaning the burners Contaminated orifice Clean the orifice Se
13. European Directive for Gas Appliances and have the right to bear the CE mark W Warning Read this manual carefully before starting up the water heater Failure to read the manual and to follow the printed instructions may lead to personal injury and damage to the appliance W Warning Whenever there is a smell of gas No naked flames No smoking Avoid causing sparks Do not use any electrical equipment or switch i e no telephones plugs or bells Shut off the mains gas supply Open windows and doors Warn occupants and leave the building After leaving the building alert the gas distribution company or installer As the end user installer or service and maintenance engineer you must ensure that the entire installation complies as a minimum with the official local e building regulations energy supplier s directives for existing gas installations e directives and technical guidelines for natural gas installations safety requirements for low voltage installations e regulations governing the supply of drinking water e regulations governing ventilation in buildings e regulations governing the supply of air for combustion e regulations governing the discharge of products of combustion requirements for installations that consume gas regulations governing indoor waste water disposal e regulations imposed by fire service power companies and municipality 1 4 Target groups 1 5 10 Maintenance
14. WO II switch is set to the I position The water temperature can be set by turning the rotary knob on the control thermostat see paragraph 5 5 Control thermostat the green light is illuminated If the appliance is fitted with a Power Anode there is an extra indicator lamp on the operating panel Depending on the status of the appliance this lamp will be lit either Green or Red or it will be Off 51 6 4 52 Error conditions Status of the appliance AN Ga XK Green This state indicates that the Power Anode is working correctly Red This state indicated that the Power Anode is not working properly due to an error Off This state indicates that the Power Anode is not working wW Note If there is an error with the Power Anode Red or ifthe Power Anode is not working Off this will have no effect on the hot water supply If the appliance has an error heat demand will be temporarily ignored The frost protection will also be out of operation There are various types of errors Lockout error due to the flue gas backflow safeguard The lockout push button of the flue gas thermostat in de draught diverter has been activated After removing the cause the push button must be pressed to re start the appliance see 5 8 Flue gas backflow safeguard reset button Lockout errors of the burner control In this event the red error light on the control panel will be illuminated The burner contr
15. and remove the protective cover from the electrical section The connection block is now visible wW Note Refer to A 2 Electrical diagram SCE for the connection of electrical components Mains voltage The appliance is supplied without a power cord and main switch Note a In order to receive electrical power the appliance has to be connected to the mains voltage by means of a permanent electrical connection A two terminal main switch with a contact gap of at least 3 mm must be fitted between this fixed connection and the appliance The power cord must have cores of at least 3 x 1 0 mm 1 Lead the power cord through the metric pull relief on the top of the control column 2 Connect earth phase L4 and neutral N of the power cord to terminals 1 through 3 of the connection block as indicated in Table 3 8 3 Tighten the pull relief so that the cable is clamped 4 If you do not need to make any more connections then fit the protective cover back on the control column Instruction Manual SCE GAN 3 10 4 3 10 5 3 11 Checking the supply pressure and burner pressure Release R 2 0 Uk Checking the supply pressure and burner pressure 5 Connect the power cord to the main switch W Warning Leave the appliance disconnected until you are ready to start it up Week timer circuit 1 Cut out the week timer image from the control panel Fit the week timer in the hole 3 Connectthe week timer
16. and the power supply 4 Set the appliance using the I 0 II switch on the control panel to the ON mode I position or in the weekly program mode Il position See 6 2 operating states 5 Set the desired water temperature using the control thermostat See paragraph 5 5 Control thermostat If there is a heat demand the appliance will run through a heating cycle See paragraph 7 4 The appliance s heating cycle You can e Shut the appliance down for a brief period OFF mode e Disconnect the appliance from the mains e Shut the appliance down for a longer period Shut the appliance down for a brief period OFF mode To shut the appliance down for a brief period you must activate the frost protection Refer also to paragraph 2 3 The appliance s heating cycle With the frost protection you can prevent water freezing in the appliance Activate frost protection by switching the I 0 II switch on the control panel to the 0 position Disconnect the appliance from the mains The appliance should only be disconnected from mains power in the correct way The correct procedure is as follows 1 Shut the appliance down by putting the I 0 II switch to 0 position 2 Disconnect the appliance by putting the mains switch between the appliance and the mains power supply to 0 position Shut the appliance down for a longer period Drain the appliance if you are shutting it down for a longer period of time Pro
17. anodes To finalise the maintenance carry out the following steps 1 Fill the appliance See paragraph 4 2 Filling the appliance 2 Start up the appliance See 7 2 Starting up 63 64 Maintenance Instruction Manual SCE 10 10 1 General warranty 10 2 Tank warranty 10 3 Installation and conditions of use Release R 2 0 Uk General warranty Warranty Certificate If within one year of the original installation date of a water heater supplied by State following verification and at the sole option of State a part or component with exclusion of the tank proves to be defective or does not function correctly due to manufacturing and or material defects State shall replace or repair this part or component If within 3 years of the original installation date of a water heater supplied by State following inspection and at the sole option of State the glass lined steel tank proves to be leaking due to rust or corrosion occurring on the water side State shall provide an entirely new water heater of equivalent size and quality The warranty period given on the replacement water heater shall be equal to the remaining warranty period of the original water heater that was supplied Notwithstanding that stated earlier in this article in the event that unfiltered or softened water is used or allowed to stand in the water heater the warranty shall be reduced to one year from the original installation date The
18. anodes must be replaced as soon as they are 60 or more used up take this into consideration when determining the maintenance frequency 1 2 PON Oa PRON Disassemble the protective cap on the control column by loosening the 4 screws on the cap Disconnect the draught diverter from the flue gas discharge Undo the screws on the draught diverter Remove the draught diverter from the appliance Undo the screws on the draught diverter Remove the cover from the appliance Remove the sealing ring from the tank Loosen the anodes using suitable tools Check the anodes and if necessary replace them Now also check the flue baffles Replace them if necessary See paragraph 9 4 4 Checking the flue baffles Fit a new sealing ring around the edge of the tank and replace the cover 12 Reconnect the wiring for the flue gas thermostat to the connector of the appliance Note For this appliance Power Anodes might be used as well These anodes require less to no maintenance The anodes are deliverable as an option and can be ordered separately See the instructions coming with these anodes or contact your installer Descaling and cleaning the tank Scale and lime buildup prevent effective conduction of the heat to the water Periodic descaling prevents buildup of these deposits This increases the service life of the appliance and also improves the heating process Take the rate of scale formation into account when decid
19. be sure it is clean 3 4 Fit the gas supply pipe to the gas control Close the gas valve ty Warning 3 9 Flue gas discharge Check for leaks after fitting W Warning 28 The installation should be carried out by an authorised installer in compliance with the general and local regulations imposed by gas water supply and power supply companies and the fire service Refer also to paragraph 1 3 Regulations Instruction Manual SCE GAN Legend draught diverter fastening screws chimney pipe Release R 2 0 Uk 3 9 1 3 9 2 Flue gas discharge Introduction When connecting the appliance to the chimney the draught diverter supplied with the appliance must be used The standard flue gas thermostat and sensor that are supplied must be fitted in the draught diverter gt 0 5m IMD 0148 Fitting the draught diverter De draught diverter is fitted with two fastening screws The assembly procedure is as follows 1 Place the draught diverter on the appliance and mark the drill holes Again remove the draught diverter from the appliance wW Note The position of the holes already made for the flue gas backflow safeguard sensor must be taken into account The holes should be roughly in line with the flue gas thermostat bracket 2 Now drill two holes into the top of the appliance 3 2 mm drill bit 3 Using the fastening screws fix the draft diverter to the appliance 4 Fitachimney p
20. e Check whether the glow igniter lights up e Check the power supply to the glow igniter e Check the wiring of the glow igniter 3 No flame detection e Check that the Phase L and Neutral N are correctly connected from the mains to the appliance e Check that the ionisation rod is not defective e Check that the wiring to the ionisation rod is correctly If the error cannot be resolved or is persistent contact your installer connected b The safety 1 The safety thermostat has cut out correctly If the error cannot be resolved or is persistent contact your thermostat has cut out e Reset the appliance installer e Check whether the control thermostat is working e Check whether the high limit thermostat is working e Check that the circulation pump if present is working 2 The safety thermostat has cut out without apparent reason e Check whether the thermostat may be broken e Check whether the thermostat sensor may be broken 59 y Warning y Xx Onderhoud mag alleen worden uitgevoerd door een service en onderhoudsmonteur pe 8 4 Troubleshooting table insufficient hot water If the appliance fails to supply any hot water there are several possible causes Refer to Table 8 3 Insufficient hot water Table 8 3 Insufficient hot water Symptom Cause Solution Remark Insufficient hot water The water temperature Set the control thermostat to a higher setting See paragraph setting T
21. flat sealing plate or high low control program instead of a burner pressure regulator it is assumed that the burner pressure is equal to the supply pressure In practice however the burner pressure will be lower Release R 2 0 Uk 3 12 Conversion to a different gas category 36 3 12 1 Installation ve py w Note If the burner pressure is not correct and the appliance is fitted with a flat sealing plate or high low control you will not be able to adjust the pressure In this case consult your installer or supplier If the appliance is fitted with a burner pressure regulator then the pressure can be adjusted by following steps 12 through 17 12 Remove the cap from the burner pressure regulator 13 Adjust the burner pressure by turning the adjusting screw depending on the correction required Adjusting screw anticlockwise burner pressure decreases Adjusting screw clockwise burner pressure increases 14 Cover the opening of the adjusting screw and check the burner pressure against the target value from Table 3 9 15 If the pressure reading is not correct repeat steps 13 and 14 until the correct pressure is attained 16 Fit the cap on the burner pressure regulator 17 Shut down the appliance by putting the I 0 II switch to 0 position 18 Shut off the gas supply 19 Disconnect the two pressure gauges and re tighten the sealing screws in the nipples wy Caution The conversion may only by carrie
22. present the valve for the circulation pump 2 Close drain valve Open the nearest hot water draw off points 4 Open the valve on the cold water side so that cold water flows into the appliance Completely fill the appliance when cold water flows at normal pressure from the nearest hot water draw off point the appliance is full Bleed the entire installation of air for example by opening all hot water draw off points The appliance is now under water supply pressure There should be no water coming out of the T amp P valve If this does happen the cause might be The water supply pressure is greater than the specified 8 bar Do place a pressure reducing valve after all The overflow valve in the protected cold supply setup is defective or incorrectly fitted Filling vented installations To fill the appliance proceed as follows 1 Open the valve in the hot water pipe and if present the stop valves for the circulation pump Close the drain valve 3 Open the nearest hot water draw off point 4 Open the valve on the cold water side so that cold water flows into the appliance Completely fill the appliance when cold water flows at normal pressure from the nearest hot water draw off point the appliance is full Bleed the entire installation of air for example by opening all hot water draw off points The appliance is now under water supply pressure There should be
23. sensor detects a temperature of 20 C or lower the appliance s heating cycle will start See paragraph 2 3 The appliance s heating cycle High limit thermostat If the high limit thermostat sensor detects a temperature greater than 84 C the high limit thermostat will open The heat demand will be stopped and the burner control will stop the heating cycle until the high limit thermostat closes again At that moment the burner control resets the appliance and the heating cycle resumes The high limit safeguard serves to prevent overheating and or excessive formation of scale in the appliance Safety thermostat If the safety thermostat sensor detects a temperature greater than 93 C the safety thermostat will open The heat demand will be ended and the burner control immediately stops the heating cycle A lockout error will occur in the burner control This must be manually reset before the appliance can be put back into operation 2 5 Safety of the installation 2 4 2 2 4 3 2 5 1 Flue gas backflow safeguard The flue gasses are directed to the outside via the draught diverter and the flue gas discharge To prevent the flue gases from flowing back into the boiler room the discharge ducting is monitored by a feature called the Thermal Reflux Safeguard T R S This uses a flue gas thermostat sensor with flue gas thermostat which are located in the draught diverter Under normal c
24. supply mm 505 505 505 505 505 515 590 590 N Height of hot water outlet mm 1545 1545 1545 1750 1750 1580 1655 1655 22 Instruction Manual SCE GAN Table 3 4 Dimensions SCE Technical specifications Dimension Description SCE SCE SCE SCE SCE SCE SCE SCE 80 115 80 140 80 180 95 199 95 260 70 360 65 400 65 500 P Height of the cleaning opening centre 710 710 710 710 710 720 795 795 mm R Height of the drain valve centre mm 440 440 440 440 440 480 535 535 S Height of the T amp P plug centre mm 1490 1490 1490 1695 1695 1525 1525 1525 1 Cold water supply external R1 2 Hot water outlet connection internal Rp 1 3 Gas control connection internal Rp Ya Rp 1 4 Tank drain valve connection internal Rp 1 5 T amp P valve connection internal 1 14 NPT 6 Dimensions of the cleaning and inspection 100 opening mm Table 3 5 Data on gas categories appliance category IIZ2H3 Description Unit SCE SCE SCE SCE SCE SCE SCE SCE 80 115 80 140 80 180 95 199 95 260 70 360 65 400 65 500 Data natural gas gas category 2H Diameter of orifice mm 2 90 3 20 3 20 3 30 2 95 3 20 3 30 3 90 Burner pressure control Yes Yes Yes Yes Yes Yes Yes Yes G20 Nominal load Upper Value kW 33 9 42 1 53 4 59 9 83 2 102 6 128 8 1424 Pre pressure mbar 2
25. warranty set out in article 1 and 2 will apply solely under the following conditions a The water heater is installed under strict adherence to the installation instructions of State applying to the specific model and the relevant local authority installation and building codes rules and regulations in force b The water heater remains installed at the original site of installation c The appliance is exclusively used with drinking water which at all times can freely circulate a separately installed heat exchanger is mandatory for heating salt water or corrosive water d The tank is safeguarded against harmful scaling and lime buildup by means of periodic maintenance e The water temperatures in the heater do not exceed the maximum setting of the thermostats which form a part of the water heater f The water pressure and or heat load do not exceed the maximum values stated on the water heater rating plate g The water heater is installed in a non corrosive atmosphere or environment h The water heater is connected to a cold water supply arrangement which is approved by the relevant authority with sufficient capacity for this purpose supplying a pressure no greater than the working pressure stated on the water heater and where applicable fitted with a temperature and pressure relief valve compliant with the installation instructions of State pertaining to the specific model of water heater and under adherence to the re
26. water The drinking water must comply with the regulations governing drinking water for human consumption Table 3 3 shows these requirements Table 3 3 Water specifications Water composition Hardness gt 1 00 mmol l alkaline earth ions German hardness gt 5 6 dH lt French hardness gt 10 0 fH e British hardness gt 7 0 eH Conductivity gt 125 uS cm Acidity pH value 7 0 lt pH value lt 9 5 w Note If the water specifications deviate from those stated in Table 3 3 then the tank protection cannot be guaranteed See also chapter 10 Warranty Certificate 3 4 Technical The appliance is supplied without accessories Check the dimensions and other specifications specifications for the accessories to be used based on Figure 3 1 and tables Table 3 4 through Table 3 7 Table 3 4 Dimensions SCE Dimension Description SCE SCE SCE SCE SCE SCE SCE SCE 80 115 80 140 80 180 95 199 95 260 70 360 65 400 65 500 A Height including draught diverter mm 1910 1910 1890 2155 2155 1950 2145 2145 B Height excluding draught diverter mm 1690 1690 1690 1900 1900 1735 1810 1810 D Diameter of the appliance mm 710 710 710 710 710 710 710 710 F Width including control column mm 800 800 800 800 800 800 800 800 G Flue gas outlet diameter mm 130 130 150 180 180 200 250 250 K Height of gas supply mm 145 145 145 145 145 145 145 145 M Height of cold water
27. way aeration valve T De 13 e recommended overflow pipe rou X4 c cold water supply a ES oX A hot water outlet CAR circulation pipe gas supply D flue gas outlet 8 Figure 3 2 Installation diagrams 060606060906 IMD 0147 Release R 2 0 Uk 25 3 3 6 Water connections 26 Unvented 3 6 1 3 6 2 3 6 3 3 6 4 Installation ve py Cold water side See Q in Figure 3 2 1 Fit an approved stop valve on the cold water side as required by regulations Refer also to paragraph 1 3 Regulations 2 The maximum working pressure of the appliance is 8 bar Because the pressure in the water pipe at times can exceed 8 bar you must fit an approved pressure reducing valve 3 Fit a non return valve and an expansion vessel 6 4 Fit a pressure relief valve and connect the overflow side to an open wastewater pipe Shunt pipe You can connect a shunt pump to prevent stacking of the water in the water heater 1 Optional Depending on the consumption pattern fit a shunt pipe 922 mm stop valve and a shunt pump 2 Fit a non return valve 3 Fit a stop valve Hot water side See in Figure 3 2 wW Note Insulating long hot water pipes prevents unnecessary energy loss 1 Fit the T amp P valve 2 Optional fit a temperature gauge to be able to check the temperature of the tap water 3 Fit a stop val
28. 0 20 20 20 20 20 20 20 Burner pressure mbar 8 5 8 6 7 8 8 5 8 5 9 2 7 8 11 5 Gas consumption 2 mh 32 4 0 5 1 5 7 7 9 9 8 12 3 13 6 Warm up time dT 44 K min 38 30 23 25 17 11 8 7 Data on LP gas gas category 3 Diameter of orifice mm 1 60 1 70 1 60 1 75 1 50 1 70 1 75 2 25 Heating up time min 38 30 23 25 17 11 8 7 G30 butane Nominal load kW 33 9 42 2 53 4 59 2 80 8 100 1 127 5 140 3 Supply pressure mbar 30 30 30 30 30 30 30 30 Burner pressure mbar Gas consumption kg h 12 5 3 1 3 9 4 3 5 9 7 3 9 3 10 2 Release R 2 0 Uk 23 3 Installation Table 3 5 Data on gas categories appliance category II2H3t Continued y ie Description Unit SCE SCE SCE SCE SCE SCE SCE SCE 80 115 80 140 80 180 95 199 95 260 70 360 65 400 65 500 G31 propane Nominal load Upper Value kW 33 1 41 4 52 8 58 2 78 4 98 3 125 5 136 2 Supply pressure mbar 37 37 37 37 37 37 37 37 Burner pressure mbar Gas consumption kg h 2 4 3 0 3 8 4 2 5 6 7 0 9 0 9 7 1 Ifusinga flat sealing plate or high low control program instead of a burner pressure control it is assumed that the burner pressure is equal to the pre pressure In practice however the burner pressure will be lower 2 Based on 1013 25 mbar and 15 C Table 3 6 Data general Description Unit SCE SCE SCE SCE SCE SCE SCE SC
29. 0 Uk Introduction Status of the appliance Topics covered in this chapter 6 2 Operating modes lt 6 3 Power Anode Status e 6 4 Error conditions When running the appliance has three basic operating modes namely lt DISCONNECTED In this mode the appliance is off and all components are electrically dead The main switch switch between the appliance and the power supply is turned off On the control panel the I O Il switch is set tot the 0 position the green light is off lt WEEK PROGRAM optional In this position the appliance only meets the heat demand during the periods set by the timer Outside these periods only frost protection is active On the control panel The I O II switch is set to the II position The water temperature can be set by turning the rotary knob on the control thermostat see paragraph 5 5 Control thermostat The period during which the heat demand must be fulfilled can be programmed using the week timer see paragraph 5 7 Week timer circuit the green light is illuminated wW Note If no week timer is installed the II mode is the same as the 0 mode OFF In this mode the frost protection is activated The main switch is set to I position On the control panel The I 0 II switch is set to the 0 position the green light is illuminated lt ON In this mode the appliance continuously fulfils the demand for heat On the control panel The
30. 1 Cold water side 27 3 7 2 Shunt pipe 27 3 7 3 Hot water side 27 3 7 4 Circulation pipe 27 Gas connection 28 Flue gas discharge 28 3 9 1 Introduction 29 3 9 2 Fitting the draught diverter 29 3 9 3 Flue gas thermostat assembly 30 5 3 10 3 11 3 12 4 1 4 2 4 3 5 1 5 2 5 3 5 4 5 5 5 6 5 7 5 8 6 1 6 2 6 3 6 4 7 1 7 2 7 3 TA 8 1 8 2 8 3 8 4 9 1 Electrical connection 31 3 10 1 Introduction 31 3 10 2 Preparation 31 3 10 3 Mains voltage 32 3 10 4 Week timer circuit 33 3 10 5 Connecting extra error signal Alarm OUT 33 Checking the supply pressure and burner pressure 33 Conversion to a different gas category 36 3 12 1 Introduction 36 3 12 2 Conversion to a different gas SCE 80 115 through 65 400 37 3 12 3 Conversion to a different gas category SCE 65 500 39 Filling and draining 43 Introduction 43 Filling the appli
31. E 80 115 80 140 80 180 95 199 95 260 70 360 65 400 65 500 Capacity litres 309 309 298 357 335 278 253 252 Number of bar burners 3 3 4 4 7 7 9 6 orifices Number of flue tubes flue 5 5 7 6 9 12 16 17 baffles Empty weight kg 214 214 227 237 262 262 278 330 Number of anodes 2 2 2 2 3 3 4 4 Maximum working pressure bar 8 8 8 8 8 8 8 8 Table 3 7 Data electrical DESCRIPTION Unit All models Electrical power consumption W 30 Supply voltage VAC 230 15 10 Mains frequency Hz 50 1 Hz 3 5 24 Installation diagram Figure 3 2 shows the water and gas connection diagrams for unvented and vented installations The following paragraphs describing the connections in detail make reference to these diagrams Instruction Manual SCE Y Installation diagram Legend pressure reducing valve UNVENTED B obligatory expansion vessel obligatory T amp P valve obligatory i stop valve recommended non return valve obligatory X4 circulation pump optional X 4 drain valve gas valve obligatory AZ o stop valve obligatory temperature gauge recommended 1MD 0146 VENTED gt A de A optional E 18 15 a draught diverter oe hot water draw off points Z 12 shunt pump pressure relief valve obligatory Oo gt water cistern 6 float valve 3
32. Note To electrically disconnect the appliance you must use the main switch between the appliance and the mains power supply Use the rotary knob on the control thermostat to set the desired water temperature to between 40 C and 70 C The rotary knob is continuous over a scale of 1 to 4 Table 5 2 shows the temperatures corresponding to each position Table 5 2 Temperature setting Position Temperature 1 40 C 2 50 C 3 60 C 4 70 C Instruction Manual SCE AE 5 6 Burner control reset button 5 7 Week timer circuit Legend timer switch week disc arrow marker hands manual switch tabs Figure 5 2 Week timer Release R 2 0 Uk Burner control reset button An error can cause the burner control to lock out When this happens the red light on the control panel will illuminate After eliminating the cause of the error you can reset the appliance using the reset button wl Note Before resetting always eliminate the cause of the error To identify the various errors refer to chapter 6 Status of the appliance Chapter 8 Troubleshooting describes how to troubleshoot errors and problems Optionally you can use the week timer to program when the appliance must supply the heat demand Set the I 0 II switch to the Il position to activate the week timer circuit On the week disc of the timer switch seven day segments are indicated Monday through Sunday Each day is
33. ORO ES que aki r ponm I S kara JO I I I I EEE E eee cessa A G AJ TERMINAL STRIP CONNECTIONS NO Normally open Earth P Phase in alarm N Neutral NC Normally closed L Phase F1 Fuse T5A L Phase input to controller R1 Relay max 250V 10A L2 Phase input to flue gas backflow safeguard B Frost protection thermostat L3 Phase input safety circuit for enabling temperate control C Control thermostat NO Normally open D WO Il switch P PVC Supply E Safety thermostat NC Normally closed F High limit thermostat G Gas valve COMPONENTS H Glowplug A Double pole main switch J lonisation rod N Neutral M Error signalling Earth L Signalling In operation L Phase input to controller M Reset button L Phase out TH Phase input of thermostat circuit OPTIONAL COMPONENTS GV1 Phase output to gas control MAXPhase input of safety thermostat LG Phase output to glow igniter l lonisation detection output Figure A 2 Electrical diagram SCE Release R 2 0 Uk N Mains switch control O Potentiostat for power anodes P Thermal Reflux Safeguard TRS Q Week timer control 70 A Appendices DX Instruction Manual SCE Index IX Index ambient temperature 21 heat demand 54 appliance heating cycle 15 54 functional description
34. Release R 2 0 Uk 80 115 80 140 80 180 95 199 95 260 70 360 65 400 65 500 a Installation User and Service Manual St te WATER HEATERS CE BEE Www state waterneaters co uk your installer state RD NA The Expert s Choice Copyright Trademarks Liability More information Release R 2 0 Uk W Warning Read this manual carefully before first using 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 2004 State Water Heaters 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 State Water Heaters State Water Heaters reserves the right to modify specifications stated in this manual Any brand names mentioned in this manual are registered trademarks of their respective owners State Water Heaters accepts no liability for claims from third parties arising from improper use other than that stated in this manual and in accordance with the General Conditions registered at the Eindhoven Chamber of Commerce Refer further to the General Conditions These are available on request and without charge Although considerable care has been taken to ensure a correct and suitably comprehensive description of all relevant components the man
35. ance 44 4 2 1 Filling unvented installations 44 4 2 2 Filling vented installations 44 Draining the appliance 44 4 3 1 Draining unvented installations 44 4 3 2 Draining vented installations 45 Operating eee eee eee 47 Introduction 47 Control panel 47 Explanation of the icons 48 MO switch 48 Control thermostat 48 Burner control reset button 49 Week timer circuit 49 Flue gas backflow safeguard reset button 50 Status of the appliance 51 Introduction 51 Operating modes 51 Power Anode Status 51 Error conditions 52 Starting up and shutting down 53 Introduction 53 Starting up 53 Shutting down 53 7 3 1 Shut the appliance down for a brief period OFF mode 53 7 3 2 Disconnect the appliance from the mains
36. ategory from the conversion kit and attach it below the appliance s rating plate This clearly indicates that the appliance may no longer be run on the gas for which it was originally supplied 15 Start the appliance see paragraph 7 2 3 12 3 Conversion to a different gas category SCE 65 500 Introduction This paragraph describes the Conversion from LP gas to natural gas e Conversion from natural gas to LP gas Legend burner pressure regulator high low control gas control IMD 0132 Figure 3 9 Conversion of gas control SCE 65 500 Conversion from LP gas to natural gas 1 Perform steps 1 through 9 of paragraph 3 12 2 Conversion to a different gas SCE 80 115 through 65 400 2 Detach the high low control 3 Fit the burner pressure regulator including the sealing gasket from the conversion kit Attach the burner pressure regulator to the gas control using the two small screws supplied Release R 2 0 Uk 39 Legend See Figure 3 9 for the numbers to e 000000 timers bracket 6 terminal connector strip pull relief 9 terminal connector strip metrical pull relief high low control cable Installation y py PES gD Need IMD 0130 Figure 3 10 Fitting and removal of conversion components 40 4 Detach the cab
37. ater supply system This valve also Instruction Manual SCE AES Release R 2 0 Uk 2 5 2 2 5 3 Safety of the installation prevents water from flowing backwards from the tank into the cold water supply system The pressure reducing valve protects the installation against an excessively high water supply pressure gt 8 bar These components are fitted to the cold water pipe See paragraph 3 6 1 Cold water side Vented installation With a vented installation excess pressure is taken up by the open water reservoir The level of the water reservoir determines the maximum working pressure in the tank which may not exceed 8 bar The installation must also be fitted with an overflow from the hot water pipe which discharges into the water reservoir See paragraph 3 6 3 Hot water side T amp P valve A T amp P valve is only mandatory in an unvented installation However State also recommends the use of a T amp P valve in vented installations A T amp P 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 gt 10 bar or the water temperature is too high gt 97 C the valve will open The hot water will immediately flow out of the tank Because the appliance is under water supply pressure cold water will automatically flow into the tank The valve remains open until the unsafe situation has been averted A connecting point
38. by connecting the wires with core bush to 7 N 9 L and 11 L 4 Connect the cable with sliding bush to position B4 of the I 0 II switch 5 If you do not need to make any more connections then fit the protective cover back on the control column Connecting extra error signal Alarm OUT Alarm OUT is a potential free terminal that is switched when an error is detected You can connect various objects to it For example a signalling lamp max 250V 10A to indicate malfunctioning of the appliance The objects can be connected to normally open contacts lamp ON on error or to normally closed contacts lamp OFF on error 1 Feed the power cord through the metric pull relief on the top of the control column 2 Connectthe extra indicator at points 13 NO and 14 P and or 14 P and 15 NC according to Table 3 8 3 Tighten the pull relief so that the cable is clamped If you do not need to make any more connections then fit the protective cover back on the control column w Note Before you start up the appliance and or begin to check the supply pressure and burner pressure you must first fill the appliance Please refer to paragraph 4 2 Filling the appliance for filling instructions W Caution Before starting up for the first time and following conversion you must always check the supply pressure and burner pressure If necessary adjust these to be certain of optimum performance of the appliance w Note T
39. ceed as described in paragraph 4 3 Draining the appliance 53 r Starting up and shutting down EN k X 7 4 The appliance s The appliance s heating cycle is activated as soon as the measured water heating cycle temperature Twater falls below the threshold value Tet This threshold value depends on the currently selected appliance operating mode For example if the appliance is in the OFF mode frost protection then this value is 20 C If the appliance is in the ON mode then this threshold value is selectable for example position 3 60 C The heating cycle runs in turn through the following states 1 2 3 4 5 6 HEAT DEMAND WAITING TIME PRE GLOW IGNITION RUNNING WAITING TIME The complete cycle is explained in the example set out below g Note The appliance runs through an identical cycle when frost protection is activated The control thermostat sensor measures the water temperature The water temperature falls below the set temperature e g 60 C causing the control thermostat to close The burner control now detects a heat demand and starts the heating cycle Following the heat demand the waiting time begins This waiting time ensures the ignition takes place safely The waiting time lasts about 15 seconds Once the waiting time is over audible clicking of the relay in the burner control the pre glowing of the glow igniter is started After about 12 secon
40. d out by an authorised installer Introduction If the appliance must operate on a family of gas LP gas or natural gas other than the category of gas for which the appliance has been set up at the factory the appliance will have be adapted using a special conversion kit yY Caution Check the supply pressure and burner pressure after conversion Instruction Manual SCE GAN Legend cover plate locking strip orifice with stamped figure 3 12 2 Take care The burner may be hot Release R 2 0 Uk Conversion to a different gas category IMD Figure 3 7 Exchanging orifices The conversion of the SCE 65 500 differs from the other SCE appliances The conversion procedures are described in paragraphs 3 12 2 Conversion to a different gas SCE 80 115 through 65 400 3 12 3 Conversion to a different gas category SCE 65 500 Conversion to a different gas SCE 80 115 through 65 400 80 115 80 140 80 180 95 199 95 260 70 360 65 400 1 Disconnect the appliance from the mains See paragraph 7 3 2 Disconnect the appliance from the mains 2 Shut off the gas supply Unscrew the cover plate from the burner support 4 Use a suitable tool to remove the locking strips Note the locking strips have very sharp edges Withdraw the locking strips straight upwards Note The radiation shield condensation tray can be temporarily loosened to simplify assembly of the burner Remove the burners o
41. divided by 12 tabs 2 hours per tab To set a two hour period during which the appliance must respond to a heat demand press the tab for that period outwards The current time can be read from the hands 12 hour clock Set the day and time as follows to set the time roughly rotate the week disc in the direction of the arrow until the correct weekday lies beside the arrow marker To finely set the time rotate the minute hand clockwise until the correct time is set The manual switch must always be in the central position this activates the timer program 49 9 e ENGAR 5 8 Flue gas backflow A malfunction in the flue gas discharge like a blockage in the chimney can lead safeguard reset to the flue gas thermostat locking out This state is evident when the push button button on the flue gas thermostat is activated see Figure 5 3 Once the cause has been removed and the sensor has cooled down sufficiently press this push button to reset if the sensor is not sufficiently cooled down the flue gas thermostat will immediately lock out again The appliance will then automatically start up again if there is a current heat demand If this does not happen refer to chapter 8 Troubleshooting for a complete troubleshooting guide IMD 0151 Figure 5 3 Flue gas backflow safeguard reset button 50 Instruction Manual SCE 6 6 1 Introduction 6 2 Operating modes 6 3 Power Anode Status Release R 2
42. ds pre glowing the gas control is opened and ignition can take place After ignition the flame is detected and the appliance will be running This means that actual heating has started When the water is up to temperature the heat demand cuts out The gas control closes and the burner tray is extinguished A new waiting time begins of about 10 seconds After this waiting time the appliance enters an idle state and waits until the water temperature again falls below the set temperature With any subsequent heat demand the heating cycle will resume from step 1 54 Instruction Manual SCE AES 8 8 1 Introduction Release R 2 0 Uk Troubleshooting This chapter covers the following errors lt General errors Gas smell Water leakage Explosive ignition Poor flame profile Power Anode optional lt No hot water Insufficient hot water General errors cannot be displayed on the control panel but these errors usually do not cause the hot water supply to fail neither fully nor partially If the hot water supply should fail this is termed an error condition See paragraph 6 4 Error conditions If the hot water supplied is insufficient this is usually caused by an incorrect setting or some temporary problem The following pages provide troubleshooting tables for each type of error 55 Warning Onderhoud mag alleen worden uitgevoerd door een service en onderhoudsmonteur
43. e 9 4 3 Cleaning the orifices Inadequate air supply Improve the air supply by better ventilating the boiler room Power Anode If the malfunction cannot be solved consult your installer optional e Indicator lamp is Anodesnotmaking 1 Check that the water heater is full of water red contact with the 2 Check that the Power Anode is properly connected water see appendix A Electrical scheme SCE Breakin one ofthe 3 Check to see that all connections are properly made cables 4 Check all cables for breaks and replace if any are found e Anode poorly earthed e Indicator lamp is Nopowersupplytothe Check the power supply off potentiostat 8 3 Troubleshooting table no hot water If the appliance fails to supply any hot water there are several possible causes Refer to table Table 8 2 No hot water Release R 2 0 Uk 57 Warning Onderhoud mag alleen worden uitgevoerd door een service en onderhoudsmonteur Table 8 2 No hot water page 1 of 2 Symptom Green light OFF and Red light OFF Green light ON and Red light OFF Cause No mains power present Blockage in the flue gas discharge the flue gas backflow safeguard has cut out Solution 1 Checkthatthe mains switch is ON 2 Check the voltage across the main switch 3 4 5 Check the voltage on the electrical connector block Check the voltage on the burner control Check
44. e obligatory expansion vessel obligatory T amp P valve obligatory stop valve recommended non return valve obligatory circulation pump optional drain valve gas valve obligatory stop valve obligatory temperature gauge recommended shunt pump optional draught diverter hot water draw off points pressure relief valve obligatory water cistern e float valve e 3 way aeration valve recommended overflow pipe cold water supply hot water outlet circulation pipe gas supply flue gas discharge 000086 6 Release R 2 0 Uk Filling and draining Topics covered in this chapter e Filling the appliance e Draining the appliance The components referred to in these paragraphs are illustrated in Figure 4 1 UNVENTED B X4 6 MD X4 s C D y IMD 0146 VENTED ne 18 16 A ZA J io N 15 12 N Wan N 17 Po ae _ T O O B _ wo 43 p PO Ka 13 6 Ly V te 4 65 Sip HPH i D IMD 0147 Figure 4 1 Installation diagrams 43 4 2 4 3 44 4 Filling the appliance Draining the appliance 4 2 1 4 2 2 4 3 1 Filling and draining AE Filling unvented installations To fill the appliance proceed as follows 1 Open the valve in the hot water pipe and if
45. ermostat to the highest position take note of the original setting and put the I 0 Il switch back to I position If there is no heat demand draw some hot water off to initiate a heat demand Check whether the heating cycle runs correctly See paragraph 7 4 The appliance s heating cycle Set the control thermostat back to the original setting and put the I O II switch back to position Check the supply and burner pressures and adjust these where necessary See paragraph 3 11 Checking the supply pressure and burner pressure 7 Check that all components of the flue gas system are properly attached 8 Test the operation of the overflow valve of the cold supply setup The water 11 Release R 2 0 Uk should spurt out Test the overflow operation of the T amp P valve The water should spurt out Check the wastewater pipes of the overflow valves and remove any lime buildup that may be present Drain the appliance See paragraph 4 3 Draining the appliance 61 9 9 3 Water side mainte nance 9 3 1 9 3 2 Take care AN The draught diverter and the cover may be hot 9 3 3 Figure 9 1 Cleaning opening 62 Maintenance Introduction The following steps should be carried out on the water side 1 2 Checking the anodes Descaling and cleaning the tank Checking the anodes Timely replacement of the anodes extends the service life of the appliance The appliance s
46. for a T amp P valve is standard on the appliance See paragraph 3 6 3 Hot water side 17 Functioning of the appliance AED Instruction Manual SCE E DX 3 1 Introduction Release R 2 0 Uk Introduction Installation W Warning The installation should be carried out by an approved installer 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 which complies with the requirements stated in national and local ventilation regulations Refer also to paragraph 1 3 Regulations This chapter describes the installation activities to be carried out before the appliance may be started up namely Packaging Environmental conditions Technical specifications Water connections Unvented Water connections Vented Gas connection Flue gas discharge Electrical connection Checking the supply pressure and burner pressure Conversion to a different gas category Note Starting up the appliance is described in chapter 7 Starting up and shutting down Figure 3 1 shows a front view of the appliance 19 Installation O O i 2 Re F 5 LEA lt m 6 ol 7 IU TESA A I 49799 1 lt Pins ia gt oe i
47. he easiest way to check the gas pressures is by using two pressure gauges This procedure assumes that these two gauges are available 33 Legend o 2 000000 burner pressure regulator burner pressure regulator cap burner pressure regulator adjusting screw gas control connector flat sealing plate supply pressure nipple gas control manifold nipple high low control Installation EX Block for SCE 80 115 80 140 80 180 95 199 95 260 70 360 65 400 Figure 3 6 Gas blocks for the two designs 34 E T gt IMD 0129 TT IMD 0127 Instruction Manual SCE ZX 5 lt Checking the supply pressure and burner pressure To check the supply pressure and burner pressure proceed as follows 1 Disconnect the appliance from the mains See paragraph 7 3 2 Disconnect the appliance from the mains On the gas control Figure 3 6 there are two nipples To check the supply pressure nipple is used The other nipple on the gas control is not used The manifold nipple is used for measuring the burner pressure Sealing screws are located inside the nipples Loosen both sealing screws by a few turns Do not loosen them completely this makes them difficult to tighten again Connect a pressure gauge to the manifold nipple Open the gas supply and vent the gas supply line via nipple 6 5 Connect a pressure gauge to nipple as soon as gas starts to flow from this
48. ill become void Instruction Manual SCE AES 1 6 1 7 Overview of this document Forms of notation Forms of notation The following notation is used in this manual g Note Important information W Caution Ignoring this information can lead to the appliance being damaged W Warning Failure to carefully read this information may lead to danger of personal injury and serious damage to the appliance Table 1 2 provides an overview of the contents of this document Table 1 2 Contents of document Chapter 2 Functioning of the appliance Target groups IMEI DS Description This chapter describes how the appliance functions 3 Installation This chapter describes the installation activity to be completed before you actually start up the appliance Instructions are also provided for the installation and or service and maintenance engineer on converting the appliance to other types of gas 4 Filling and draining 5 Operating s ZX E AI AI s lt This chapter describes how to fill and drain the appliance This chapter describes the appliance s control panel and how to use it 6 Status of the appliance s lt BIEL This chapter describes the status mode or condition that the appliance may have and possible actions to take 7 Starting up and shutting down s ENDAS This chapter describes how to start up the applia
49. ing on maintenance frequency DO mo e ON Remove the cover plate on the outer jacket See Figure 9 1 Undo the bolts Remove the cover and the rubber O ring Inspect the tank and remove any contamination Remove the scale using Borcoill Close the cleaning opening Use a new rubber O ring for this State recommends the use of Borcoil as the composition of this material is known to us Borcoil can be ordered from State Instruction Manual SCE 9 4 Gas side mainte nance 9 4 1 Take care AN The burners may be hot 9 4 2 9 4 3 9 4 4 Take care AN The flue baffles may be hot 9 5 Finalising maintenance Release R 2 0 Uk Gas side maintenance Introduction The following steps should be carried out on the gas side 1 Cleaning the burners 2 Cleaning the orifices 3 Checking the flue baffles Cleaning the burners 1 Detach the burners 2 Carefully remove any contamination present on the burners 3 Re attach the burners Cleaning the orifices 1 Remove the orifices 2 Remove any contamination present in the orifices 3 Re attach the orifices Checking the flue baffles 1 Complete steps 1 through 9 of paragraph 9 3 2 Checking the anodes 2 Remove the flue baffles from the appliance 3 Check the flue baffles for rust and remove any which is present 4 Checkthe flue baffles for wear and replace any worn flue baffles 5 Complete steps 11 and 12 of paragraph 9 3 2 Checking the
50. installation should be carried out by an approved installer in compliance with the general and local regulations imposed by the gas water and power supply companies and the fire service Refer also to paragraph 1 3 Regulations 3 10 1 Introduction Topics covered in this paragraph e 3 10 2 Preparation e 3 10 3 Mains voltage e 3 10 4 Week timer circuit e 3 10 5 Connecting extra error signal Alarm OUT 3 10 2 Preparation W Caution The appliance is phase sensitive It is absolutely essential to connect the phase L from the mains to the phase of the appliance and the neutral N of the mains to the neutral of the appliance There should also be no potential difference present between neutral N and earth If this is the case then an isolating transformer must be applied in the supply circuit For more information or to order this isolating transformer please contact State Figure 3 5 shows a front view of the electrical connection block Table 3 8 shows the associated connections Table 3 8 Electrical connection block SCE Mains voltage Flue gas Week timer circuit Potential free protection contact L L4 N Lo L3 N N L L L L NO P NC Release R 2 0 Uk 31 32 3 10 3 Installation y py IMD 0134 Figure 3 5 Connection block connections 1 through 15 explained in Table 3 8 In preparation first remove the protective cover from the control column e Undo the 4 screws
51. ipe of at least 0 5 metres length to the opening of the draft diverter before fitting the rest of the chimney materials according to current regulations See paragraph 1 3 Regulations wl Note Use flue gas discharge materials that comply with the regulations See paragraph 1 3 Regulations w Note Make sure that the chimney discharges into an area where this is permitted for this category of appliance 29 3 Installation Xx E 3 9 3 Flue gas thermostat assembly The flue gas thermostat sensor is already mounted in the draught diverter The bracket with thermostat needs to be mounted on the top of the unit and the cable from the thermostat needs to be connected with the connector on the unit Warning If the flue gas thermostat is not or is incorrectly fitted connected the flue gas discharge will not be protected An incorrectly fitted chimney can cause flue gases to backflow into the boiler room wl Note Figure 3 4 shows an example For each type of unit the position of the sensor can slightly differ Figure 3 4 Flue gas backflow detection Fit the flue gas thermostat as follows 1 Remove the flue gas thermostat assembly a from the packet 2 Mount the bracket with the thermostat on the top of the unit 30 Instruction Manual SCE ve Electrical connection st 3 Connect the connector from the flue gas thermostat to the connector on the appliance 3 10 Electrical connection Wy Warning The
52. ircumstances this sensor will register the ambient temperature However if the chimney is not drawing sufficiently for example due to a blockage in the chimney the flue gases will reflux and flow back past the flue gas thermostat sensor The sensor will then detect an excessive temperature and the flue gas thermostat will open The heat demand will be ended and the burner control immediately stops the heating cycle The flue gas thermostat will also lock out This must be manually reset before the appliance can be put back into operation lonisation rod To prevent gas flowing when there is no combustion an ionisation rod is fitted The burner control uses this rod for flame detection by means of ionisation detection The burner control acts immediately as soon as it detects that gas is flowing but there is no flame In addition to the standard safety monitoring of the appliance the appliance must also be protected by an expansion vessel pressure overflow valve non return valve and a T amp P valve Use of an expansion vessel a pressure relief valve and or a pressure reducing valve depends on the type of installation unvented or vented Unvented installation With an unvented installation a pressure relief valve and expansion vessel prevent excessive pressure in the tank This prevents damage being caused to the enamelled coating in the appliance or to the tank A non return valve prevents excessive pressure in the w
53. l 6 lt To T JD 1 1 IMD 0145 Figure 3 1 Plan and elevation of the appliance 20 Instruction Manual SCE ED 3 2 Packaging 3 3 Environmental conditions Release R 2 0 Uk 3 3 1 3 3 2 Packaging To avoid damaging the appliance remove the packaging carefully We recommend unpacking the appliance at or near its intended location y Caution The appliance may only be manoeuvred in an upright position Take care that the appliance is not damaged after unpacking W Caution The appliance may not be used in rooms where chemical substances are stored or used due to the risk of explosion and corrosion to the appliance Some propellants bleaching agents degreasing agents and so on disperse vapours which are explosive and or which cause accelerated corrosion If the appliance is used in a room in which such substances are present the warranty will be void SCE appliances are open appliances and may only be placed in an open boiler room They fall under category B11BS Working clearances For access to the appliance it is recommended that the following clearances are observed see Figure 3 1 e AA around the appliance s control column and cleaning openings 100 cm e BB around the appliance itself 50 cm lt Above the appliance room to replace the anodes 100 cm if using fixed anodes or 50cm if using flexible anodes If the available clearance is less than 100 cm flexible magnesium anodes may be
54. les between the 6 terminal connector strip and 9 terminal connector strip These are the cables for the timers high low control gas control glow igniter and ionisation rod Undo timers bracket cable harness not shown and the 9 terminal connector strip Undo the metrical pull relief with high low control cable Remove this cable Fit the stop plug from the conversion set in the place of the metric pull relief Connect the cables of the gas control the glow igniter and ionisation rod to the 6 terminal connector strip as shown in the electrical diagram See appendices A 2 1 Electrical diagram SCE 65 500 LP and A 2 2 Electrical diagram SCE Clamp the gas control cable in one of the pull reliefs supplied Do the same for the cables from the glow igniter and ionisation rod Instruction Manual SCE GAN Release R 2 0 Uk Conversion to a different gas category yY Caution 10 Check the burner and supply pressure see paragraph 3 11 11 Remove the sticker showing the new gas category from the conversion kit and attach it below the appliance s rating plate This clearly indicates that the appliance may no longer be run on the gas for which it was originally supplied 12 Start the appliance see paragraph 7 2 Conversion from natural gas to LP gas 1 Perform steps 1 through 9 of paragraph 3 12 2 Conversion to a different gas SCE 80 115 through 65 400 2 Detach the burner pres
55. levant local authority installation and building codes rules and regulations in force i At all times the appliance must be equipped with a protection in the form of anodes If sacrificial anodes are used they must be replaced when and if they are used for 60 or more If electrical anodes are used they should be operational at all times 65 10 4 10 5 10 6 10 7 66 10 Exclusions Scope of the warranty Claims Limitation of liability State Warranty Certificate AN E XI The warranty set out in article 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 contaminants or other substances having been allowed to enter the tank d the conductivity of the water being less than 125 uS cm and or the hardness alkaline earth ions of the water being less than 1 00 mmol lit see Table 3 3 e unfiltered recirculated water flowing through or being stored in the water heater f any attempts at repair to a defective water heater other than by an approved service engineer The obligations of State pursuant to the specified warranty do not extend beyond free delivery from the Veldhoven warehouse of the replacement parts or components or water heater Shipping labour installation and any other costs associated wi
56. nce and how to shut it down for a brief or long period of time The general heating cycle of the appliance is also described 8 Troubleshooting AEJ This chapter is mainly intended for the installer and the service and maintenance engineer It describes appliance errors These errors are indicated on the display A troubleshooting table of possible causes and solutions is provided End users may also refer to this chapter for additional information about the appliance 9 Maintenance This chapter sets out the maintenance tasks to be carried out during a service 10 Warranty Certificate Release R 2 0 Uk This chapter states the warranty terms and conditions 11 Introduction AES Instruction Manual SCE 2 2 1 Introduction Release R 2 0 Uk Introduction Functioning of the appliance Topics covered in this chapter e Functional description of the appliance e The appliance s heating cycle e Protection for the appliance e Safety of the installation 13 2 2 2 Functional description of the appliance Legend e6060 000000000 8 9 8 8 8 8 8 8 8 8 8 8 8 8 8 SS 14 flue gas discharge draught diverter anodes flue tubes flue baffles PU isolation tank cleaning opening drain valve combustion chamber radiation shield condensation tray gas control flue gas thermostat sensor flue gas thermostat hot water outlet safety therm
57. ne by one from their brackets at the front To do this you first move them away from you and then downwards The orifices will now be accessible 37 Legend See Figure 3 7 for through 4 0000 burner pressure regulator gas control connector flat sealing plate supply pressure nipple gas control Installation y py Remove the orifices 7 Select and fit the correct orifices from the conversion kit based on Table 3 9 The orifice diameter is stamped into each orifice Figure 3 8 Conversion of gas control 38 IMD 0131 8 Refit the burners back in their original position 9 Re fit the locking strips wl Note If the radiation shield condensation tray was loosened re tighten it 10 Check whether the block is equipped with a burner pressure regulator or a flat sealing plate 11 Check with Table 3 5 whether a burner pressure regulator is required for the new gas category 12 If the flat sealing plate or burner pressure regulator need to be replaced Undo the gas control connector Disassemble the flat sealing plate or burner pressure regulator Fit the flat sealing plate or burner pressure regulator supplied with the conversion kit Fit the gas control connector wy Caution 13 Check the burner and supply pressure see paragraph 3 11 Instruction Manual SCE ve Conversion to a different gas category Ea 14 Remove the sticker showing the new gas c
58. no water coming out of the T amp P valve If this does happen the T amp P valve might be defective or incorrectly fitted Draining unvented installations Some service activities require the appliance to be drained Proceed as follows 1 2 N Qa Shut the appliance down by putting the I 0 II switch to 0 position Disconnect the appliance by putting the mains switch between the appliance and the mains power supply to 0 position Shut off the gas supply Close the valve in the hot water pipe Close the valve in the cold water supply 6 Open the drain valve Bleed the appliance or installation so that it drains completely empty Instruction Manual SCE AES Release R 2 0 Uk 4 3 2 Draining the appliance Draining vented installations Some service activities require the appliance to be drained Proceed as follows 1 2 NQa Fr Shut the appliance down by putting the I 0 II switch to 0 position Disconnect the appliance by putting the mains switch between the appliance and the mains power supply to 0 position Shut off the gas supply Close the stop valve valve in the hot water pipe Close the supply valve in the cold water supply Open the drain valve Bleed the appliance or installation so that it drains completely empty 45 Filling and draining AES Instruction Manual SCE 9 5 1 Introduction 5 2 Control panel stote WATER HEATERS
59. ol is locked out After eliminating the cause the appliance must be returned to service by pressing the reset button see 5 6 Burner control reset button Blocking errors You can recognise this status by the fact that the appliance will not start operation despite the water temperature being lower than you have set with the control thermostat see 5 5 Control thermostat These errors disappear automatically once the cause of the error has been removed after which the appliance resumes by itself The cause of the error cannot be seen on the control panel For a detailed overview of error conditions please refer to chapter 8 Troubleshooting If as end user you find the appliance in an error condition you may attempt to re start the appliance by pressing the reset button once However should the error return or become persistent you should contact your service and maintenance engineer Instruction Manual SCE 7 7 1 Introduction 7 2 Starting up 7 3 Shutting down Release R 2 0 Uk 7 3 1 7 3 2 7 3 3 Introduction Starting up and shutting down Topics covered in this chapter e Starting up e Shutting down e The appliance s heating cycle Start up the appliance as follows 1 Fill the appliance See chapter 4 Filling and draining 2 Open the gas valve see Figure 4 1 Installation diagrams 3 Switch on the power to the appliance using the mains switch between the appliance
60. ordered from State Water Heaters Note a When installing the appliance be aware that any leakage from the tank and or connections can cause damage to the immediate environment or floors below the level of the boiler room If this is the case then the appliance should be installed above a wastewater drain or in a suitable metal leak tray The leak tray must have an appropriate wastewater drain and must be at least 5 cm deep with a length and width at least 5 cm greater than the diameter of the appliance Humidity and ambient temperature The boiler room must be frost free or be protected against frost Table 3 1 shows the environmental conditions that must be adhered to for correct functioning of the electronics present in the appliance to be guaranteed Table 3 1 Humidity and ambient temperature specifications Humidity and ambient temperature Humidity max 93 RH at 25 C Ambient temperature Functional 0 lt t lt 60 C 21 3 Installation WE In connection with the appliance s weight take account of the maximum floor loading see Table 3 2 3 3 3 Maximum floor loading Table 3 2 Weight specifications related to maximum floor loading Weight of the appliance filled with water SCE 80 115 SCE 80 140 SCE 80 180 SCE 95 199 SCE 95 260 SCE 70 360 SCE 65 400 SCE 65 500 523 kg 523 kg 525 kg 594 kg 597 kg 540 kg 531 kg 582 3 3 4 Water composition The appliance is intended for heating drinking
61. ostat sensor high limit thermostat sensor control panel control thermostat burner control high limit thermostat frost thermostat safety thermostat control thermostat sensor frost thermostat sensor cold water inlet glow igniter ionisation rod bar burner burner tray Functioning of the appliance AN DA X Figure 2 1 shows a cut away view of the appliance IMD 0143 Figure 2 1 Cross section of the appliance In this appliance the cold water enters the bottom of the tank via the cold water inlet The heat of combustion is transferred to the water through the combustion chamber and flue tubes The heated tap water leaves the tank via the hot water outlet Once the appliance is completely filled with water it remains constantly under water supply pressure As hot water from the appliance is consumed it is continuously replenished with cold water Instruction Manual SCE AES 2 3 The appliance s heating cycle 2 4 Protection for the appliance Release R 2 0 Uk The appliance s heating cycle The gas required for combustion flows into the manifold via the gas control Orifices are located within the manifold Via these orifices the gas enters the bar burners The bar burners together form the burner tray As the gas is injected into the bar bu
62. rners the primary air required for combustion is also drawn in Additional air is drawn through the openings in the burner tray The glow igniter ensures the ignition of the gas air mixture The flue gases generated by this combustion are led through the flue tubes There are flue baffles fitted inside the flue tubes These slow down the flue gas exhaust improving the heat transfer efficiency The flue gases leave the appliance via the draught diverter A radiation shield condensation tray is mounted below the burner tray This prevents overheating of the floor surface under the appliance and serves as a collection tray for condensation water The PU isolation prevents heat loss The inside of the tank is enamelled to protect against corrosion The anodes provide additional protection The Hydro Cannon also protects the bottom of the tank from scale and lime buildup The entire appliance is controlled by the burner control and the control thermostat or frost thermostat The control thermostat and frost thermostat both independently measure the water temperature Twater The appliance s heating cycle is activated as soon as T water falls below the specified threshold value Tse The value for Tes depends on the status chosen for the appliance see paragraph 6 2 Operating modes If the appliance is in the OFF mode frost protection then this value is determined by the frost thermostat threshold value 20 C
63. se is too low 5 5 Control thermostat Hot water supply used 1 Reduce the rate of hot water consumption Allow the appliance If the error has not been rectified and no other cause can be up enough time to heat up the water found disconnect the appliance from the mains shut off the gas 2 If this error occurs regularly check whether the high limit valve and alert your installer thermostat is cutting in out If so check that the circulation and or shunt pump are working properly Release R 2 0 Uk 60 Introduction 9 Maintenance 9 1 Introduction W Caution Maintenance may only by carried out by an approved service and maintenance engineer At each service the appliance undergoes maintenance both on the water side and on the gas side The maintenance should be carried out in the following order Po N Preparation for maintenance Water side maintenance Gas side maintenance Finalising maintenance Note Before ordering spare parts take a moment to write down the appliance type and model and the full serial number of the appliance Only by ordering with this information can you be sure to receive the correct spare parts These details can be found on the rating plate 9 2 Preparation for To test whether all components are still working properly you should complete maintenance the following steps 1 2 Put the I 0 II switch on the control panel to 0 position Set the control th
64. sure regulator 3 Fit the high low control including the sealing gasket from the conversion kit Attach the high low control to the gas control using two small screws 4 Detach the cables from the gas control the glow igniter and the ionisation rod from the 6 terminal connector strip and pull relief 5 Fit the timers including cable harness plus 9 terminal connector strip from the conversion kit to the control column 6 Remove the stop plug not shown from the underside of the control column and replace this with metrical pull relief from the conversion kit 7 Leadthe high low control cable through the pull relief and tighten the pull relief by turning it until the cable is clamped 8 Connect the high low control cable with connector to the high low control 9 Connect the cables from the timers high low control gas control and the glow igniter as shown in the electrical diagram See appendix A 2 Electrical diagram SCE wy Caution 10 Check the burner and supply pressure see paragraph 3 11 11 Remove the sticker showing the new gas category from the conversion kit and attach it below the appliance s rating plate This clearly indicates that the appliance may no longer be run on the gas for which it was originally supplied 12 Start the appliance see paragraph 7 2 41 42 Installation DX Instruction Manual SCE 4 4 1 Introduction Legend pressure reducing valv
65. th the replacement will not be accepted by State A claim on grounds of the specified warranty must be submitted to the dealer from whom the water heater was purchased or to another authorised dealer for the products of State Water Heaters Inspection of the water heater as referred to in articles 1 and 2 shall take place in one of the laboratories of State State grants no other warranty or guarantee over its water heaters nor the parts or components of water heaters supplied for replacement other than the warranty expressly set out in this Certificate State is not liable for damage to persons or property caused by parts or components or the glass lined steel tank of a replacement water heater that it has supplied under the terms of this warranty nor on any other grounds Instruction Manual SCE EM A A 1 Introduction Release R 2 0 Uk Appendices This appendix contains e The Electrical diagram SCE 67 Appendices A 2 Electrical diagram SCE brown Ee blue ki i i yellow green hey p black RE ata r EE ol Nts YL NO P NC 121314195 RT ie DERE F S IL PoP ee oe eae ie R VI RE FI BI Sl Role perni I L Lisa 0000000000 s0009 600 NL N ars N L L 1 3 4 5 6 7 8 9 0 a gagah Majah tg G HJ K TERMINAL STRIP CONNECTIONS Earth N Ne
66. the fuse in the burner control The measured voltage must be 230V AC 15 10 1 2 Trace the blockage Remove the blockage 3 Reset flue gas backflow safeguard See paragraph 5 8 Flue gas backflow safeguard reset button y EX Remark See appendix A 2 Electrical diagram SCE If you cannot resolve the error contact your installer When heat demand is detected the appliance will re start Release R 2 0 Uk 58 Warning Onderhoud mag alleen worden uitgevoerd door een service en onderhoudsmonteur Table 8 2 No hot water page 2 of 2 Symptom Cause Solution Remark Green light ON and Red light ON Release R 2 0 Uk There are three possible causes for this error To determine the cause the error must be made to recur 1 Resetthe appliance by pressing the reset button 1x 2 Should nothing happen then the reset button has already been pressed too often maximum 5x in a single heating cycle and you will have to first electrically disconnect the appliance then start it again See paragraph 7 3 2 Disconnect the appliance from the mains and steps 3 through 5 of paragraph 7 2 Starting up 3 Decide which type of cause a or b describes the situation a three unsuccessful 1 No gas start attempts in a row e Check that the gas valve is open e Check that gas control opens clicking of the gas control e Check the gas control wiring 2 No ignition
67. ual may nonetheless contain errors and inaccuracies Should you detect any errors or inaccuracies in the manual we would be grateful to receive notification This helps us to further improve our documentation If you have any comments or queries concerning any aspect related to the appliance then please do not hesitate to contact State Water Heaters Aquaheat State Sales Orchard House 61 67 Commercial Road Southampton SO15 1GG Tel 023 8057 1107 Fax 023 8057 7965 E mail enquiries state waterheaters co uk In the event of problems with connecting to the gas electricity or water supply please contact your installation s supplier installer Instruction Manual SCE AED Release R 2 0 Uk 1 1 1 2 1 3 14 1 5 1 6 1 7 2 1 2 2 2 3 24 2 5 3 1 3 2 3 3 3 4 3 5 3 6 3 7 3 8 3 9 Table of contents Introduction 9 About the appliance 9 What to do if you smell gas 9 Regulations a a aaa aaa aaa aa aa ah 9 Target groups 10 Maintenance 10 Forms of notation 11 Overview of this document 11 Functioning of the appliance 13 Introduction 13 Functional description of the appliance
68. utral L Phase L Phase input to controller L2 Phase input to flue gas backflow safeguard L3 Phase input safety circuit for enabling temperate control NO Normally open P PVC supply NC Normally closed COMPONENTS A burner control Double pole main switch N Neutral Earth L Phase input to controller L Phase output TH Phase input of thermostat circuit GV1 Phase output to gas control MAX Phase input of safety thermostat LG Phase output to glow igniter I lonisation detection output NO Normally open Figure A 1 Electrical scheme SCE 65 500 LP 68 Electrical diagram SCE 65 500 LP L NJC N Leffe L A E P Phase input alarm NC Normally closed F1 Fuse T5A R1 Relay max 250V 10A Frost thermostat Control thermostat I O Il switch Safety thermostat Max thermostat Gas block Glow igniter lonisation pin High low control Timer Error signalling Signalling In operation Reset button PTIONAL COMPONENTS Main switch Potentiostat for power anodes Thermal Reflux Safeguard TRS Week timer control VAIO UO O0ZZhFAR TITONMIOW Instruction Manual SCE y Xx Electrical diagram SCE A 2 2 Electrical diagram SCE a brown 230v AC oe 50Hz A bhe LLN I ellow green A EAIN Vy black Losi i I __ white sa e IU 4 A i 1 Li N b LL NO P_NC J 1 2 3 4 5 12 13 14 15 aa O Ed E OR
69. ve in the hot water outlet pipe for use when servicing Drain valve 1 Fit the standard supplied drain valve 2 Ifa circulation pipe is to be fitted then refer to paragraph 3 6 5 Otherwise fit the sealing nut and gasket supplied with the drain valve See Figure 3 3 Instruction Manual SCE IMD 0122 3 6 5 Figure 3 3 Drain valve 3 7 Water connections Vented Release R 2 0 Uk 3 7 1 3 7 2 3 7 3 3 7 4 Water connections Vented Circulation pipe See in Figure 3 2 and Figure 3 3 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 Fita circulation pump of the correct capacity for the length and resistance of the circulation system 2 Fit a non return valve behind the circulation pump to guarantee the direction of circulation 3 Fit two stop valves for service purposes 4 Connect the circulation pipe to the T piece on the drain valve See Figure 3 3 Cold water side See in Figure 3 2 e Fit an approved stop valve on the cold water side between the water cistern and the appliance as required by regulations Refer also to paragraph 1 3 Regulations Shunt pipe You can connect a shunt pump to prevent stacking of the water in the water heater 1 Optional Depending on the consumption pattern fit a shunt pipe 922 mm stop valve and a shunt pump

Installation User and Service Manual Release R

Contents

Download Pdf Manuals

Related Search

Related Contents