Ariston - Genus 27 Plus
Contents
1. C F oor gt ww 00 DM002A VR004A ES i 115 70 147 130 105 600 QTO003A 60 mm 60 mm 550 mm 450 mm Fig 2 2 Fig 2 3 160 mm 2 4 Overall Dimensions Legend A Central Heating Return 3 4 B Central Heating Flow 3 4 C Gas Inlet 3 4 D Domestic Hot Water Outlet 1 2 E Secondary return 1 2 F Domestic Cold Water Inlet 1 2 2 5 Clearances In order to allow for access to the interior of the boiler for maintenance purposes the boiler must be installed in compliance with the clear ance requirements indicated in the diagram below 2 6 Mounting the Appliance Fasten the boiler in place using the template and anchors supplied with the unit It is highly recommended that a spirit level be used to position the boiler so that it is perfectly level For additional information please consult the instructions contained in the connection kit and the flue kit 2 7 Electrical Connection For safety purposes have a competent person carefully check the electrical system in the property as the manufacturer will not be held liable for damage caused by the failure to earth the appliance properly or by anomalies in the supply of power Make sure that the residential electrical system2. 1 Gas meter inlet cock 10 Thermostat 2 Gas meter 11 Time control clock 3 Gas meter outlet cock 12 Radiator control clock Y 4 Internal gas cock 13 Holder 5 Appliance gas inlet cock 14 Air release valve 6 D W inlet cock 15 Drain valve 7 D H W expansion vessel 16 T amp P valve 8 cock 17 Safety valve 9 Secondary return pump 18 Tundish Gas inlet C H W return C H W flow D H W secondary return D H W flow D H inlet mmoomon Fig 2 5 1 400 abest polt SH006A 9 FUO10A Fig 2 6 TERMINAL POSITION mm A Directly below an open window or other opening 300 B Below gutters solid pipes or drain pipes 75 C Below eaves 200 D Below balconies or car port roof 200 E From vertical drain pipes and soil pipes 75 F From internal or external corners 300 G Above ground or below balcony level 300 H From a surface facing a terminal 600 From a terminal facing a terminal 1200 J From an opening in the car port e g door window into dwelling 1200 K Vertically from a terminal in the same wall 1500 L Horizontally from a terminal in the same wall 300 gei FU011A In addition it is also possible to use a split system by fitting a special adapter to the flue discharge collar and using one of the apertures for the air vent intake located on the
3. G H Heating Temperature Adjustment Knob L E D for ON OFF Switch L ON OFF Switch O Heating System Pressure Gauge Warning the flue analysis mode must only be selected by a qualified service engineer The checks to be run before initial start up are as follows 1 Make sure that the screw on the automatic air valve has been loosened when the system is full If the water pressure in the system is below 1 5 bar bring it up to the appropriate level Check to see whether the gas cock is closed Make sure that the electrical connection has been made properly and that the earth wire is connected to an efficient earthing system Supply power to the boiler by pressing the On Off switch L the L E D I will turn on turn the selector knob C to the winter setting This will start the cir culation pump After 7 seconds the boiler will signal a shut down due to failure ignition Leave the boiler as it is until all of the air has been bled from the lines Loosen the cap on the head of the pump to eliminate any air pockets Repeat the procedure for bleeding the radiators of air Open the taps for a brief period Check the system pressure and if it has dropped open the filling loop again to bring the pressure back up to 1 5 bar 2 Check the exhaust flue for the fumes produced by combustion 3 Make sure that all gate valves are open 4 Turn on the gas cock and check the seals on the connections includ
4. Shut the gas mains tap on the gas meter or the valve of the gas cylinder and call your Gas Supplier immediately If you are going away for a long period of time remember to shut the mains gas tap or the gas cylinder valve Before any intervention within the boiler it is first necessary to cut off the electrical power supply by turning the external switch to OFF This manual may be kept in the front panel of the boiler m ABODE P GH Lb m crane noe e FR004A Legend A Ignition Lockout Reset Button Safety Overheat Thermostat Reset B Ignition Lockout L E D C Selector Knob for Summer Winter Flue Analysis Modes D Low System Water Level L E D E Temperature Adjustment Knob for Domestic Hot Water F Heating System Thermometer G Safety Overheat Thermostat Intervention L E D H Adjustment Knob for Heating Temperature I On Off L E D L On Off Switch O Heating System Pressure Gauge 2 OPERATING INSTRUCTIONS e UTO008Aa CAUTION Installation start up adjustments and maintenance must be performed by a competent person only in accordance with the current Gas Safety Installation amp Use Regulations and the instructions provided Improper installation may cause damage or injury to individuals animals and personal property for which the manufacturer will not be held liable To ensure efficient and safe operation it i
5. If called for by check no 3 dismantling and cleaning of the combustion chamber 6 If called for by check no 4 dismantling and cleaning of the injectors 7 Visual check of the primary heat exchanger check for overheating in the blade assembly clean the exhaust fan if needed 8 Adjustment of the flow rate of the gas flow rate for lighting partial load and full load 9 Check of the heating safety systems safety device for maximum temperature safety device for maximum pressure 10 Check of the gas safety systems safety device for lack of gas or flame ionisation detection electrode safety device for gas cock 11 Check of the electrical connection make sure it complies with the instructions in the manual 12 Check of domestic hot water production efficiency delivery rate and temperature 13 Check pressure in the Domestic Expansion Vessel and top up as necessary 14 Check manually by turning the test knob the Temperature amp Pressure Relief Valve 15 Check manually by turning the test knob the Expansion Relief Valve 16 Check discharge pipes from both the central heating and domestic hot water for obstructions 17 Check of the general performance of the unit 18 General check of the discharge ventilation of the combustion by products 19 6 TECHNICAL INFORMATION GENUS 27 BFFI PLUS CE Certification Thermal Capacity max min kW 29 8 12 0 Thermal Power max min kW 27 4 10 3 Efficiency o
6. 2 v Ne D 7 rg h 666666665660600 5 1 Eu 1 A M N 6 n N 7 n I 2 C i LAS n om EA ll SRM f s i N LoVe ne 10 11 12 13 14 15 16 Legend 1 Air Pressure Switch 2 Fan 3 Main Heat Exchanger 4 Ignition Electrodes and Detection Electrodes 5 Burner 6 Gas Valve 8 Spark Generator 7 Automatic air release valve 8 Circulation Pump 9 Motorised Valve with by pass 10 Main Circuit Flow Switch 11 Safety Valve 3 bar 12 Low pressure switch 13 C H expansion Vessel 14 D H W expansion Vessel 15 D H W Storage with insulation shell 16 D H W Probe 17 Expansion relief valve 6 bar 18 Temperature Pressure relief valve 7bar 19 Magnesium anode 20 C H W Probe 21 Overheat Thermostat 22 Drain point 3 3 1 3 2 VR006Aa 400 COMMISSIONING Initial Preparation Removing the Casing VROO6Ab MTS GB Limited support the Genchmargy initiative Within the information pack you will find copy of the Genchmarg logbook It is important that this is completed the presence of your customer they are shown how to us it and it is signed by them Please instruct your customer that they must have their logbook with them whenever they contact service engineer or us Preliminary electrical system checks to ensure electrical safety must be carried out by a competent person i e p
7. D I will turn off Then turn off the supply of gas to the unit itself It is good practice to clean and service the appliance and central heating system every year Call an Authorised Service Centre START UP PROCEDURE LIGHTING Before starting the unit check the following The water pressure on the pressure gauge That the gas cock and the inlet for domestic water are open These models are equipped with electronic ignition which utilises contact ionisation To make the boiler operational simply press the On Off switch L The green L E D I will then turn on At this point the boiler is ready for use a centralised electronic control unit will automatically light the main burner when needed If the burner 403 UTO008Ab UTO08Aa UTOO8Ad does not light within the pre set safety time limit the red B L E D will light up To reset the ignition system the reset button A must be pressed Should the system fail to light a second time check to make sure that the gas cock is open If the problem persists contact one of our Authorised Service Centres for assistance WINTER AND SUMMER OPERATING MODES The boiler is fitted with a selector knob C which allows you to switch between winter lt Ill gt and summer lt amp gt and also heating only lt IIl gt operating modes and
8. The supply must be fused at 3 A The method of connection to the electricity supply must facilitate com plete electrical isolation of the appliance by the use of a fused double pole isolator having a contact separation of at least 3 mm in all poles or alternatively by means of a 3 A fused three pin plug and 400 2 8 Gas Connection 2 9 Water Connections 400 unswitched shuttered socket outlet both complying with BS 1363 The point of connection to the Electricity supply must be readily accessible and adja cent to the appliance unless the appliance is installed in a bathroom when this must be sited outside the bathroom The local gas region contractor connects the gas meter to the service pipe If the gas supply for the boiler serves other appliances ensure that an adequate sup ply is available both to the boiler and the other appliances when they are in use at the same time Pipe work must be of an adequate size Pipes of a smaller size than the boiler inlet connection should not be used View of the Boiler Connections Legend A Gentral Heating Return 3 4 Central Heating Flow 3 4 C Gas Inlet 3 4 D Domestic Hot Water Outlet 1 2 E Secondary return 1 2 Domestic Cold Water Inlet 1 2 Central Heating Discharge Domestic Hot Water Discharge Central Heating Detailed recommendations are given in BS 6798 1987 and BS 5449 1 1990 the fol lowing notes are given for general guida
9. damage to electrical components and wiring The discharge must not be over an entrance or a window or any other type of public access Temperature amp pressure relief valve Metal discharge pipe D1 from temperature amp pressure relief valve Z to tundish Tundish fixed grating see page 6 for iul of discharge Metal discharge pipe D2 from tundish with continuous fall See Table 2 and worked example Fixed grating SH005A Trapped gulley Fig 2 4 1 Table 1 Sizing of copper discharge pipe D2 for common temperature valve outlet sizes Valve outlet size Minimum size of Minimum size of Discharge below alternative points Discharge pipework 1 The tundish must be installed directly below the discharge outlet connection of the boiler The tundish must also be in a position visible to the occupants and positioned away from any electrical devices The discharge pipe from the tundish should termi nate in a safe place where there is no risk to persons in the vicinity of the discharge and to be of metal 2 Discharge pipes from the temperature amp pressure relief are expansion relief valve are joined together within the appliance 3 The pipe diameter must be at least one pipe size larger than the nominal outlet size of the safety device unless it s total equivalent hydraulic resistance exceeds that of a straight pipe 9m long l e Discharge pipes between 9m and 18m equ
10. is no less than 8 litres per minute Then press the selector knob in and turn it from lt IIl gt or gt to the lt t 5 WARNING The flue test feature eliminates the slow light feature This mode must only be selected by a qualified service engineer 11 Manufacturer Commercial subsidiary Merloni TermoSanitari SpA Italy MTS GB LIMITED MTS Building Hughenden Avenue High Wycombe Bucks HP13 5FT Telephone 01494 755600 Fax 01494 459775 Internet http www mtsgpb ltd uk E mail info mtsgb Itd uk Technical Service Hot Line 01494 539579 Cod 2399841517000
11. no other key is pressed The time switch then enters the automatic operating mode and displays the current time again Deleting individual switching times Press the Prog key repeatedly until the switching time you wish to delete is shown in the display Then set to using the h or m key and keep the key pressed down for around 3 seconds The switching time is now erased and the current time is displayed AM PM time display If you press the 1h and h keys at the same time the time display switches into the AM PM mode mostly used in English speaking countries Technical data Connection see unit imprint Switching capacity see unit imprint Ambient temperature 10 C to 55 C Running reserve 5hat 20 Memory locations 20 Shortest switching time 1 min Programmable every minute 4 USEFUL INFORMATION AND TROUBLESHOOTING BOILER SHUTDOWN The boiler unit is equipped with safety devices which intervene in certain situations to shutdown the boiler Some of these situations are signalled by the unit and can be corrected by the user SHUTDOWN DUE TO THE FAILURE OF THE BURNER TO LIGHT AUTOMATICALLY This anomaly is indicated by the red B L E D To reset the unit press and then release the A button At this point the electronic ignition system will attempt to light the burner again If lighting failure occurs repeatedly it is recommended that you contact one
12. press the On Off switch L the green L E D I will also turn off As a precautionary measure it is recommended that the gas cock located on the bottom of the boiler be turned off as well Manual switch Summer and winter time setting Enter Enter switching the hours times 12345851 flash DD 00 Enter minutes Enter weekday s Operating the time switch The step marked with the symbol pe are necessary to carry out a switching program Preparing for Operation B Activate the Res switch RESET to reset the time switch to its default setting activate using a pencil or similar pointed instrument Do this every time you wish to reset the time switch to erase all switching times and the current time of day After approximately two seconds the following display appears gt gt Enter current time and weekday Keep the key pressed down During the summer time period press the 1h key once Enter the hour using the h key Enter the minutes using the m key Enter the day using the Day key 1 Monday 7 Sunday Release the key Automatic Manual I Continuous Operation Operation TN Operation D on ANN ON us Continuously ON orr QW OFF C Continuously OFF If the current Switching mode is The switching times corres You can only return to automatic pon
13. the highest temperature setting With this type of installation the boiler is controlled by a room thermostat Therefore it runs until the ambient temperature has reached the temperature setting on the thermostat At that point the main burner will turn off and the circulation pump will stop TURNING OFF THE CENTRAL HEATING Installation without a room thermostat To turn off the heating turn the C selector knob to gt The boiler will still provide hot water for domestic use ADJUSTING THE HEATING TEMPERATURE To economise on consumption while achieving the highest level of comfort the temperature adjustment knob is designed with three different heating zones based on the temperature outside the home Rotate the knob H as shown below PRODUCTION OF HOT WATER FOR DOMESTIC USE Turn on the power to the boiler by pressing the On Off switch L Turn the selector knob to lt IIl gt or lt gt in this position no central heating is produced Turn the knob to select the temperature for the hot water between 40 C and about 70 C ADJUSTING THE TEMPERATURE OF WATER FOR DOMESTIC USE It is recommended that the temperature for the hot water should not be set to high temperatures and then mixed with cold water Setting the thermostat to medium temperatures is preferable see figure 3 TIME CLOCK SHUTDOWN PROCEDURE To turn off the main burner simply
14. to the maximum G20 5 mbar G30 31 19 mbar the potentiometer for the maximum thermal power for the heating system maxi mum thermal power setting factory set at the maximum value unless indicated oth erwise on the adhesive sticker located in proximity to the potentiometer The connection to the diagnosis device TCS The boiler is designed to make it easy to analyse the combustion by products Using the especially designed apertures readings can be taken on the temperature of the combustion by products and of the combustion air as well as of the concentrations of Oz and CO etc The best maximum power test conditions for the heating system are when the selector C is turned to the flue analysis setting DC005A The discharge ventilation of the exhaust fumes can be monitored to check for losses in general pressure in the system This is done to eliminate the cause of lighting failure with the main burner not indi cated by a shutdown status With a differential manometer connected to the test socket on the combustion chamber the DP value for the air pressure switch can be taken The measured value should not be less than 10 mbar under maximum thermal power conditions with the knob C on the flue test setting in order for the unit to function properly and with out interruption FU016A The boiler is equipped with the following safety systems see section 3 3 for refer ences 1 Ignition Failure This contro
15. 2 Electrical Diagram 40 50 60 70 80 Heating D H W Flue Test operating modes AT c 70000 HHB G 217 lt 1 2 m 14 113 12 111 109 8 eee 9 K YM N O 14 13 1019 6 5 4113 12 11 8117 E Bor Oy m 8 8 5 6 SIS P B06 R F sm gl o oi c 2 E 0 0 6 dis id B03 LC B01 B02 B04 B05 Legend AT High Voltage P C B BT Low Voltage P C B Remote Connector Kit Flame Failure L E D Insufficient Water Pressure L E D Water Temperature Indicator L E D s Overheat Thermostat Warning L E D System Reset Button Selector Knob for Operating Mode Domestic Hot Water Temp Adjustment Central Heating Temp Adjustment Wire Connector for Room Thermostat Connector for Total Check System Selector for Local Remote Control Anti cycling Device Adjustment for Heating Soft light Adjustment Max Heating Temperature Adjustment Time Clock Connection On Off L E D On Off Switch Interface Wire for P C B s Relay Motorised Valve Ignitor Relay Gas Valve Relay Fan Relay Circulation Pump Relay Selector TCS2 Link for
16. Continuous Pump Run N Xxz cdomouozzrac c romnmoour EN o CN102 Q numm HEBBBH w 123 3 M R U 1d 10 7 6 slalla 211 10 9 5 4 3 2 1 2 oy g E Do do t d a x 22 c M EON g x ivy i258 a 2 V gt o a Grn YIl A01 Air Pressure Switch 02 Fan A03 Gas Valve A05 Motorised Valve A06 Circulation Pump 07 Flame Detector A08 Earth Terminal B01 Over Heat Thermostat B02 External Thermostat Gas Valve Modulator B04 D H W Probe Sensor Cylinder B05 Heating Sensor B06 Pressure Switch for Heating Circuit BO7 Minimum pressure switch Colours Gry Grey Rd Red BI Blue Grn YIll Yellow Green Wh White Brn Brown Black Wh Rd White Red 13 2 13 Water Circuit Diagram 14 19 y ly 22 21 20 ERES Y
17. GENUS Z7 PLUS Country of destination GB 400 IV 4 Installation Instructions Type C Boilers G C N 47 116 11 LEAVE THESE INSTRUCTIONS WITH THE END USER Benchmark The code of practice for the installation commissioning amp servicing of central heating systems ARISTON TABLE OF CONTENTS 1 2 9 GENERAL INFORMATION General Instructions Overall View INSTALLATION Delivery Reference Standards Siting the Appliance Overall Dimensions Clearances Mounting the Appliance Electrical Connection Gas Connection Water Connections 2 10 Flue Connection 2 11 Room Thermostat Connection 2 12 Electrical System Diagrams 2 13 Water Circuit Diagrams 3 COMMISSIONING Initial Preparation Removing the Casing Control Panel Initial Start up Operational Adjustments Combustion Analysis Fume Discharge Monitoring Boiler Safety Systems Draining the System GAS ADJUSTMENTS Gas Adjustment Table Changing the Type of Gas MAINTENANCE TECHNICAL INFORMATION 400 1 1 1 400 GENERAL INFORMATION General Information This manual is an integral and essential part of the product It should be kept with the appliance so that it can be consulted by the user and our GENUS 27PLUS authorised personnel Please carefully read the instructions and notices about the unit contained in this manual as they provide important information regarding the safe in
18. ct the resistance for 4 no 22mm elbows at 0 8m each 3 2m Therefore the maximum permitted length equates to 5 8m As 5 8m is less than the actual length of 7m therefore calculate the next largest size discharge pipe D1 discharge pipe D2 resistance allowed by each elbow or from tundish Maximum Resistance created Maximum resistance allowed for a straight expressed as a bend length of 28mm pipe D2 from G 1 2T amp P length of pipe i e valve equates to 18m Ib bend M Subtract the resistance for 4 no 28mm elbow G 1 2 15 mm 22mm Up to9m 0 8m 28 mm Up to 18m 1 0m at 1 0m each 4m LLL s 5mm Up to em mC Therefore the maximum permitted length G 3 4 22mm 28mm Up to9m 1 0m s 35 mm Up to 18 1 4m equates to 14m 42 mm Up to 27 m 1 7m As the actual length is 7m a 28mm D2 cop e 25mm ie per pipe will be satisfactory 54 mm Up to 27 m 2 3m TB004A 400 Air Release Points These must be fitted at all high points where air naturally collects and must be sited to facilitate complete filling of the system The appliance has an integral sealed expansion vessel to accommodate the increase of water value when the system is heated It can accept up to 7 1 5 gal of expansion water If the heating circuit has an unusually high water content calculate the total expansion and add an additional sealed expansion vessel with adequate capacity Mains Water Feed Central Heating There must be no direc
19. d to the changed manually mode from the program the next switching continuously ON entered time will be and continuously carried out auto OFF switching matically again modes by according to the pressing the W entered switching key program UTOO8An B Entering the switching times You have 20 memory locations available Each switching time takes up one memory location Keep pressing the Prog key until a free memory location is shown in the display Programme ON or OFF with the key Cy s OFF ON Enter the hour using h Enter the minutes using m If a switching command is to be carried out every day 12345 6 7 then store using the key otherwise select the day s it is to be carried out by using the Day key When the day selection is left blank the programmed switching instruction operates at the same time every day 123456 Monday Saturday 12345 Monday Friday 67 Saturday Sunday Selection of single days 1 Mon 2 Tues Save the switching time with the key The time switch enters the automatic operating mode and displays the current time of day Begin any further entry of a switching time with the Prog switch If your entry is incomplete the segments not yet selected will blink in the display After programming is completed and you return the time clock to the current time display with the ke
20. f Nominal Thermal Capacity 96 Efficiency at 3096 of Nominal Thermal Capacity 96 Heat Loss to the Shell A 50 C 96 Flue Heat Loss with Burner Operating 96 Flue Heat Loss with Burner Off 96 Maximum Discharge of Fumes methane Residual Discharge Head Consumption at Nominal Capacity G20 G25 15 C 1013 630 031 2 35 2 32 Temp of Exhaust Fumes at Nominal Capacity with Methane 136 9 96 7 27 Oz Content 7 45 CO Content ppm Minimum Ambient Temperature C Heating Temperature max min C Temperature amp Pressure Relief Valve Setting bar C Stored D H W Cylinder Capacity Stored D H W min max Temperature max min C Specific flow rate IN 10 AT 30 C l min Time Taken to Raise Tempertature from 15 C to 65 C min Time Taken to Raise 70 of the Stored Volume to 65 C min D H W Expansion Vessel Capacity D H W Expansion Vessel Pre load Charge bar Operating Pressure bar Maximum Supply Pressure to Pressure Reducing Valve bar Heating Expansion Vessel Capacity Heating Expansion Vessel Pre load Charge bar Maximum Water Content in System Maximum Heating Pressure bar Nominal Pressure Natural Gas G20 mbar LPG G30 G31 mbar Electrical Supply V Hz Power Consumption Protection Grade of Electrical System IP Internal Fuse Rating FAST 2 AT Weight Kg 86 GC Number 47 116 11 BS EN 625 Figures obtained by WRc in accordance with Test Criteria 1 50 220 amp 1 50 222 Manufac
21. heck of the primary heat exchanger check for overheating of the exchangers fins clean the exhaust side of the exchanger and fan if necessary 8 Regulate the gas pressure ignition pressure partial flame maximum flame 9 Check proper operation of the heating safety system maximum safety temperature maximum safety pressure 10 Check the proper operation of the gas safety system gas or flame safety device gas valve safety device Check that the electrical connections have been made in compliance wit h the instructions shown in the Installation Instructions 12 Check the efficiency of the hot water supply flow and temperature 13 Check pressure in the Domestic Expansion Vessel and top up as necessary 14 Check manually by turning the test knob the Temperature amp Pressure Relief Valve 15 Check manually by turning the test knob the Expansion Relief Valve 16 Check discharge pipes from both the central heating and domestic hot water for obstructions 17 Check general operation of the appliance 18 Check the exhaust system for the combustion products 11 1 2 Overall View Legend Air Pressure Switch Fan Main Heat Exchanger Combustion Chamber Ignition Electrodes and Detection Electrodes Burner Automatic air release valve Gas Valve 9 Spark Generator 10 Circulation Pump 11 Motorised Valve with by pass 12 Main Circuit Flow Switch 13 Safety Valve 3 bar 14 Low pressure switch 15 E
22. ing the one for the burner making sure that the meter does not signal the passage of gas Check the connections with a soap solution and eliminate any leaks 5 Press the reset button A for the lighting system the spark will light the main burner If the burner does not light the first time repeat the procedure 6 Check the minimum and maximum pressure values for the gas going to the burn er adjust it if needed using the values indicated in the table in section 4 See sect of the servicing manual The boiler was designed to make regulation easy To access the adjustment and control area simply remove the cover by unscrewing the screws A and C and lift up the small service panels B1 and B2 respectively The first provides access to the control low voltage P C B while the second makes it possible to work on the power supply P C B The service panel B2 also provides access to the power supply cord connector the fuses the selector knob for continuous operation of the circulation pump The service panel B1 also provides access to the potentiometer for regulating the ignition delay anti cycling feature which can be set from 0 to 2 minutes factory set at 1 minute the potentiometer for regulating the soft light feature the set 400 3 6 3 7 3 8 400 Combustion Analysis Fume Discharge Monitoring Boiler Safety Systems ting for which can range from the minimum thermal power
23. ion kit to the appliance and check the gas connector on the appliance for leaks When the installation and filling are completed turn on the central heating system sect 3 4 and run it until the temperature has reached the boiler operating temperature The system must then be immediately flushed through The flushing procedure must be in line with BS 7593 1992 Code of Practice for Treatment of Water in Domestic Hot Water Central Heating Systems During this operation we highly recommend the use of a central heating flushing deter gent Fernox Superfloc or equivalent whose function is to dissolve any foreign matter that may be in the system Substances different from these could create serious problems to the pump or other components The use of an inhibitor in system such as Fernox MB 1 or equivalent is strongly recom mended to prevent corrosion sludge damaging the boiler and system Failure to carry out this procedure may invalidate the appliance guarantee 15 3 3 ABCDE F GH Control Panel Eo Cura 0 Legend ME A Ignition Faliure Reset Safety Thermostat Lb Reset B L E D for Ignition Faliure C Selector Knob for Summer Winter Flue Test Modes D L E D for Insufficient System Pressure E Domestic Hot Water Temperature Control ai F Central Heating Temperature Indicating Leds L E D for Safety Thermostat overheating FR004A 3 4 3 5 Initial Start up Operational Adjustments
24. ions of the Building Regulations applicable in Scotland with respect to the installation of the combined appliance in a room con taining a bath or shower Where a room sealed appliance is installed in a room containing a bath or shower the boiler and any electrical switch or appliance control utilising mains electricity should be situated so that it cannot be touched by a person using the bath or shower The location must permit adequate space for servicing and air circulation around the appliance as indicated in paragraph 2 4 The location must permit the provision of an adequate flue and termination For unusual locations special procedures may be necessary BS 6798 1987 gives detailed guidance on this aspect A compartment used to enclose the appliance must be designed specifically for this purpose No specific ventilation requirements are needed for an installation within a cupboard This appliance is not suitable for outdoor installation The type C appliances in which the combustion circuit air vent intake and combustion chamber are air tight with respect to the room in which the appli ance is installed can be installed in any type of room There are no limitations with respect to ventilation and the volume of the room itself The boiler must be installed on a solid permanent wall to prevent access to the electrical parts when live through the aperture on the back frame 5 339 227 T5 97 36 900
25. ipe serves a number of discharges such as in blocks of flats the number served should be limited to not more than 6 systems so that any installation can be traced reasonably easily The single common discharge pipe should be at least one pipe size large than the largest individual discharge pipe to be connected If unvented hot water storage systems are installed where discharges from safety devices may not be apparent l e in dwellings occupied by the blind infirm or disabled people consideration should be given to the installation of an electronically operated device to warn when discharge takes place Note The discharge will consist of scalding water and steam Asphalt roofing felt and non metallic rainwater goods may be damaged by such discharges Warning The outlet from the temperature amp pressure relief valve must not be used for any other purpose The temperature amp pressure relief valve must not be removed in any circumstances Any of the above will totally invalidate the warranty Note The discharge from the central heating and domestic hot water systems may be joined together after the tundish WORKED EXAMPLE The example below is for a G 1 2 Temperature amp Pressure Relief valve with a dis charge pipe D2 having 4 no elbows and length of 7m from the Tundish to the point of discharge From Table 1 Maximum resistance allowed for a straight length of 22mm copper discharge pipe D2 from G 1 2 T amp P valve is 9m Subtra
26. is adequate for the maximum power absorbed by the unit which is indicated on the rating plate In addition check that the section of cabling is appropriate for the power absorbed by the boiler The boiler operates with alternating current as indicated in the techni cal data table 7 where the maximum absorbed power is also indicat ed Make sure that the connections for the neutral and live wires cor respond to the indications in the diagram The appliance electrical connections are situated on the reverse of the control panel see the servicing manual for further information Important In the event that the power supply cord must be changed replace it with one with the same specifications Make the connections to the terminal board located within the control panel as follows The yellow green wire should be connected to the terminal marked with the earth symbol make sure to re use the ferrule mounted on the other supply cord The blue wire should be connected to the terminal marked The brown wire should be connected to the terminal marked L Note The diagrams for the electrical system are indicated in section 2 12 Warning this appliance must be earthed External wiring to the appliance must be carried out by a qualified technician and be in accordance with the current I E E Regulations and applicable local regulations The Genus range of boilers are sup plied for connection to a 230 V 50 Hz supply
27. ivalent resistance length should be at least 2 sizes larger than the nominal outlet size of the safety device Between 18m and 27m at least 3 sizes larger and so on Bends must be taken into account in calculating the flow resistance See fig 2 4 1 and Table 1 4 The discharge pipe must have a vertical section of pipe at least 300m in length below the tundish before any elbows or bends in the pipework 5 The discharge pipe must be installed with a continuous fall 6 The discharge must be visible at both the tundish and the final point of discharge but where this is not possible or practically difficult there should be clear visibility at one or other of these locations Examples of acceptance are i Ideally below a fixed grating and above the water seal in a trapped gully ii Downward discharges at a low level i e up to 100mm above external surfaces such as car parks hard standings grassed areas etc These are acceptable providing that where children may play or otherwise come into contact with discharges a wire cage or similar guard is positioned to prevent contact whilst maintaining visibility iii Discharges at high level l e into a metal hopper and metal down pipe with the end of the discharge pipe clearly visible tundish visible or not Or onto a roof capable of withstanding high temperature discharges of water 3m from any plastic guttering sys tems that would take such a discharge tundish visible iv Where a single p
28. l signals an ignition failure on the burner 7 seconds after a lighting failure The L E D B will turn on to signal the shutdown status The system can be reset by pressing and releasing the button A after checking to make sure that the gas valve is open Repeat this process until the burner lights 2 Circulation Failure This control signals that the safety pressure switch on the primary circuit has not sensed a pressure of at least 1 5 bar within 40 seconds of the activation of the circu lation pump it shuts off the boiler and lights the L E D D The system can be reset after the pressure has been brought up to the proper level by using the On Off switch L 3 Overheating This control shuts off the boiler in the case where the primary circuit reaches a tem perature in excess of 110 C The L E D will come on to signal this shut off sta tus After the system has been allowed to cool the system can be reset by pressing the button A 4 Anti frost Device The boiler is equipped with a device that automatically lights the main burner when the temperature in the delivery line to the system drops below 5 C The boiler will continue to operate until the temperature in question reaches about 58 C This device is activated on a properly operating boiler if the system pressure is between the acceptable values the power supply to the unit is on the unit is supplied with gas This feature is enabled also when
29. nce Pipe Work Copper tubing to BS EN 1057 1996 is recommended for water pipes Jointing should be either with capillary soldered or compression fittings Where possible pipes should have a gradient to ensure air is carried naturally to air release points and water flows naturally to drain taps The appliance has a built in automatic air release valve however it should be ensured as far as possible that the appliance heat exchanger is not a natura col lecting point for air Except where providing useful heat pipes should be insulated to prevent heat loss and avoid freezing Particular attention should be paid to pipes passing through ventilated spaces in roofs and under floors By pass The appliance includes an automatic by pass valve which protects the main heat exchanger in case of reduced or interrupted water circulation through the heating system due to the closing of thermostatic valves or cock type valves within the system System Design This boiler is suitable only for sealed systems Drain Cocks These must be located in accessible positions to permit the draining of the whole system The taps must be at least 15mm nominal size an manufactured in accordance with BS 2870 1980 Safety Valve Discharge The discharge should terminate facing downwards on the exterior of the building in a position where discharging possibly boiling water amp steam will not create danger or nuisance but in an easily visible position and not cause
30. nsumption 15 C 1013mbar Consumption 15 C 1013mbar Gas Cock Outlet Pressure max min 1mbar 10 197column of water The outlet pressure of the gas cock is obtained by completely loosening the screw on the solenoid The maximum pressure of the gas to the burner will be equal to the nominal delivery pressure minus the head loss within the gas valve 4 1 Changing the Type The boiler can be converted to use either methane natural gas G20 or LPG of Gas G30 G31 by an Authorised Service Centre The operations that must be performed are the following 1 Replace the jets on the main burner see table in section 4 2 Adjust the maximum and minimum thermal capacity values for the boiler see table in section 4 3 Replace the gas rating plate 4 Adjust the maximum thermal power setting CATEGORY II2H3 Methane Gas Liquid Butane Gas Liquid Propane Gas G20 Recommended Soft light Pressure mbar 5 5 4 13 4 13 4 5 Adjust the soft light feature 6 Adjust the delayed lighting feature for the heating system can be set from 0 to 2 mins 18 400 5 400 MAINTENANCE It is recommended that the following checks be made on the boiler at least once a year 1 Check the seals for the water connections replacement of any faulty seals 2 Check the gas seals replacement of any faulty gas seals 3 Visual check of the entire unit 4 Visual check of the combustion process and cleaning of the burners if needed 5
31. of our Authorised Service Centres SHUTDOWN DUE TO OVERHEATING This anomaly is signalled by the red G L E D The boiler shuts off because the safety thermostat detected that the boiler temperature has reached the temperature limit To reset the unit wait until the boiler has cooled and then press the A button If the safety thermostat shuts off the unit on a frequent basis contact one of our Authorised Service Centres for assistance SHUTDOWN DUE TO INSUFFICIENT WATER CIRCULATION UTOO8Ap This anomaly is indicated by the red D L E D One of the possible causes of this shutdown situation could be the lack PILOTA of water in the boiler or water circulation failure in the primary heating circuit Check the system pressure on the pressure gauge O and if it is less than 0 5 bar consult your installer for checking and refilling the system Then reset the unit by turning the boiler off and then back on with the On Off button L If this situation persists contact one of our Authorised Service Centres UT008Aa Cz 4 d n aes FLUE TEST FEATURE only for authorised personnel The Summer Winter Flue Test selector knob can be set to lt t gt to bypass temperature adjustment on the heating circuit for the purpose of analysing the fumes produced by combustion To access this mode open a water tap or taps so that the flow rate
32. olarity earth continuity resistance to earth and short circuit Filling the Heating System Remove the panels of the case and lower the control panel see point 3 2 for further information Open the central heating flow and return cocks supplied with the connection kit Unscrew the cap on the automatic air release valve one full turn and leave open permanently Close all air release valves on the central heating system Gradually open valve s at the filling point filling loop connection to the central heating System until water is heard to flow do not open fully Open each air release tap starting with the lower point and close it only when clear water free of air is visible Purge the air from the pump by unscrewing anticlockwise the pump plug and also man ually rotate the pump shaft in the direction indicated by the pump label to ensure the pump is free Close the pump plug Continue filling the system until at least 1 5 bar registers on the pressure gauge Inspect the system for water soundness and remedy any leaks discovered Filling of the D H W System Close all hot water draw off taps Open the cold water inlet cock supplied with the connection kit Open slowly each draw off tap and close it only when clear water free of bubbles is visible Gas Supply Inspect the entire installation including the gas meter test for soundness and purge all as described in BS 6891 1988 Open the gas cock supplied with the connect
33. rforated ring 2 Use a tool to grasp the lid and remove it completely 3 Clean any burrs or sharp edges with a knife or an appropriate tool lt BS i Fig 2 9 Fig 2 10 In Fig 2 11 below several different A dh types of flue systems are shown T LA For additional information regarding the 7 H flue accessories please consult the e Hnr Flue Pipe Accessories manual e Lc N N i D m I 4 5 o i oL A had L max 500 mm m D 2 2 Fig 2 11 Exhaust Type Coaxial System Split Systems L Length of Piping 400 Maximum Extension Use of 42 mm Restictor Exhaust Air dubios Pipes on Delivery Side Risk of Condensation Forming g 60 100 60 100 g 60 100 In calculating the lengths of the pipes the maximum length must also take into con sideration the values for the exhaust air intake end terminals as well as 90 elbows for coaxial systems The C52 types must comply with the following requirements 1 The discharge intake vent pipes must have the same diameter of 80 mm 2 If an elbow is inserted into the discharge ventilation system the calculation of the overall extension must take into consideration the values for each c
34. s recommended that the boiler is serviced annually by a competent person If it is known or suspected that a fault exists on the appliance it must not be used until the fault has been corrected by a competent person HELPFUL SUGGESTIONS To get the most out of your boiler we have provided you with some useful advice on the proper use and maintenance Periodically check the system pressure using the pressure guage make sure that the pressure at 1 5 bar the blue part on the gauge when the system is off and cool The warning L E D D will indicate if the pressure is below the minimum recommended value Consult your installer for checking and refilling the system The outer panels of the unit s case must only be cleaned with a damp cloth Do not use abrasive cleaners The Control panel can be wiped with either a damp or dry cloth Spray polishes must not be used on the control panel surface or knobs Care must be taken in preventing any liquid entering the appliance If the water is exceptionally hard install a water softener so that the efficiency of the unit remains the same over time as this will consume less gas To improve comfort and take full advantage of the heat produced by the boiler it is recommended that an external thermostat be installed If the boiler is not going to be used for an extended period of time turn off the supply of electricity to the unit by pressing the On Off switch ep The green L E
35. stallation use and maintenance of the product For operating instructions please consult the separate User s Manual Read the instructions and recommendations in these Installation Instructions careful ly to ensure proper installation use and maintenance of the appliance Keep this manual in a safe place You may need it for your own reference while our Servicing Centre technicians or your installer may need to consult it in the future The appliance should be left packed until it is ready to be installed when handling the appliance be careful not to damage any controls or fittings This is a combined appliance for the production of central heating C H and domes tic hot water D H W This appliance must be used only for the purpose for which it is designed The manufacturer declines all liability for damage caused by improper or negligent use No asbestos or other hazardous materials have been used in the fabrication of this product Before connecting the appliance check that the information shown on the data plate and the table on pages 4 5 comply with the electric water and gas mains of the property You will find the data plate on the reverse of the control panel The gas with which this appliance operates is also shown on the label at the bottom of the boiler Do not install this appliance in a damp environment or close to equipment which spray water or other liquids Do not place objects on the appliance Do no
36. t allow children or inexperienced persons to use the appliance without super vision If you smell gas in the room do not turn on light switches use the telephone or any other object which might cause sparks Open doors and windows immediately to ventilate the room Shut the gas mains tap on the gas meter or the valve of the gas cylinder and call your Gas Supplier immediately If you are going away for a long period of time remember to shut the mains gas tap or the gas cylinder valve Always disconnect the appliance either by unplugging it from the mains or turning off the mains switch before cleaning the appliance or carrying out maintenance In the case of faults or failure switch off the appliance and turn off the gas tap Do not tamper with the appliance For repairs call your local Authorised Servicing Centre and request the use of origi nal spare parts For in guarantee repairs contact MTS GB Limited Check the following at least once a year 1 Check the seal of water connections replacing the gaskets if necessary 2 Checkthe seal of the gas connections replacing the gaskets if necessary 3 Check the general condition of the appliance and of the combustion chamber visually 3 4 Visual check of the combustion clean burners if necessary 5 With reference to point 3 dismantle and clean the combustion chamber if nec essary 6 With reference to point 4 dismantle and clean the injectors if necessary 7 Visual c
37. t connection to the mains water supply even through a non return valve without the approval of the Local Water Authority Filling A temporary method for initially filling the system and replacing lost water during servicing and initial filling complying to current water regulations and byelaws must be provided The flexible hose must be removed once the system has been filled Domestic Water The domestic water must be in accordance with the relevant recommendation of BS 5546 1990 Copper tubing to BS EN 1057 1996 is recommended for water carrying pipe work and must be used for pipe work carrying drinking water The domestic hot water temperature should be be adjusted to trip at 60 C This temperature will pre vent the formation of limescale in hard water areas Note This appliance is capable of producing domestic hot water of up to 70 C For extra security against scalding a thermostatic blending valve may be installed on the domestic hot water outlet Secondary Return The secondary return can be used as an option A Non Return Valve not supplied must be fitted to prevent back flow and a Bronze Pump will be needed in conjunction with a Pipe Thermostat to circulate the hot water both not supplied Residual Head of the Boiler PRESSION HEAD mCE DEBIT FLOW m h Fig 2 5 5 S
38. the boiler is in summer operating mode 5 Safety Shut off At the start of every lighting phase the P C B performs a series of internal controls If a malfunction occurs the boiler will shutdown until the problem has been resolved 17 3 9 Draining the System Draining the heating system The heating system must be emptied as follows Turn off the boiler Open the drain valve for the system and place a container below to catch the water that comes out Empty the system at the lowest points where present If you plan on not using the heating system for an extended period of time it is recommended that you add antifreeze with an ethylene glycol base to the water in the heating lines and radiators if the ambient temperature drops below 0 C during the winter This makes repeated draining of the entire system unnecessary Draining the domestic hot water system Whenever there is the danger of the temperature dropping below the freezing point the domestic hot water system must be drained as follows Turn off the general water valve for the the household plumbing system Turn on all the hot and cold water taps Empty the remaining water from the lowest points in the system where present 4 GAS ADJUSTMENTS CATEGORY II2H3 Methane Gas Liquid Butane Gas Liquid Propane Gas G20 Lower Wobbe Index 15 C 1013mbar Nominal Delivery Pressure Minimum Delivery Pressure GENUS 27 BFFI PLUS Main Burner n 15 jets Co
39. tional information please consult the Installation and Servicing Instructions Please ensure manuals provided are kept with the appliance so that they can be used by the end user installer or our authorised engineer TABLE OF CONTENTS 1 GENERAL INFORMATION page 3 2 OPERATING INSTRUCTIONS page 4 3 TIME CLOCK page 7 4 USEFUL INFORMATION AND TROUBLESHOOTING page 10 1 GENERAL INFORMATION CONTROL PANEL MTS GB Limited support the initiative Your installer will give you and show you how to use a logbook which will give you important information about your boiler and heating system Please have this logbook to hand whenever you contact a service engineer or us All CORGI Registered Installers carry a CORGI ID card and have a registration number Both should be recorded in your boiler Logbook You can check your installer is CORGI registered by calling CORGI direct on 01256 372300 This is a combined appliance for the production of central heating C H and domestic hot water D H W This appliance must be used only for the purpose for which it is designed The manufacturer declines all liability for damage caused by improper or negligent use Do not allow children or inexperienced persons to use the appliance without supervision If you smell gas in the room do not turn on light switches use the telephone or any other object which might cause sparks Open doors and windows immediately to ventilate the room
40. top part of the combustion cham ber A 177 ERLEBT A FU012A 10 2 10 Flue Connections Flue System The provision for satisfactory flue termination must be made as described in BS 5440 1 The appliance must be installed so that the flue terminal is exposed to outdoor air The terminal must not discharge into another room or space such as an outhouse or lean to It is important that the position of the terminal allows a free passage of air across it at all times The terminal should be located with due regard for the damage or dis colouration that might occur on buildings in the vicinity In cold or humid weather water vapour may condense on leaving the flue terminal The effect of such steaming must be considered If the terminal is less than 2 metres above a balcony above ground or above a flat roof to which people have access then a suitable terminal guard must be fitted When ordering a terminal guard quote the appli ance model number A suitable terminal guard is available from TOWER FLUE COMPONENTS Morley Road Tonbridge Kent TN9 1RA The minimum acceptable spacing from the terminal to obstructions and ventilation openings are specified in Fig 2 6 The boiler is designed to be connected to a coaxial flue discharge system Fig 2 7 Fig 2 8 400 This procedure must be done as follows 1 Remove the air vent intake in the area indicated in Fig 2 9 by breaking the pe
41. turer Merloni TermoSanitari SpA Italy Commercial subsidiary MTS GB LIMITED MTS Building Hughenden Avenue High Wycombe Bucks HP13 5FT Telephone 01494 755600 Fax 01494 459775 Internet http www mtsgpb Itd uk E mail info mtsgb ltd uk Technical Service Hot Line 01494 539579 Cod 23 99 84 1516 000 AB GENUS 27PLUS 403 Users Manual benchmark The code of practice for the installation commissioning amp servicing of central heating systems ARISTON Dear Customer Thank you for choosing an ARISTON boiler We guarantee that your boiler is a reliable and technically sound product This User s Manual provides detailed instructions and recommendations for proper installation use and maintenance Remember to keep this manual in a safe place for future reference i e by the gas meter Your local MTS Servicing Centre is at your complete disposal for all requirements MTS GB Limited gt The guarantee on this appliance is valid for 12 months from the first day of installation Repairs to the electric hydraulic or gas circuits may be carried out only by your local authorised MTS Servicing Centre Every attempt has been made to avoid errors of any kind in this User s Manual the Management invites customers to inform of any inaccuracies which they may find This will help to improve our service IMPORTANT Please read this manual carefully For addi
42. unvented hot water storage system without notifying the Local Authority The installation and initial startup of the boiler must be by a CORGI Approved Installer in compliance with the installation standards currently in effect as well as with any and all local health and safety standards i e CORGI The installation of this appliance must be in accordance with the relevant require ments of the current Gas Safety installation amp use Regulations the Local Building Regulations the current E E Wiring Regulations the byelaws of the local water authority and in Scotland in accordance with the Building Standards Scotland Regulation and Health and Safety document No 635 Electricity at work regs 1989 Installation should also comply with the following British Standard Codes of Practice BS 7593 1992 Treatment of water in domestic hot water central heating systems BS 5546 1990 Installation of hot water supplies for domestic purpoes BS 5440 1 1990 Flues BS 5440 2 1989 Air supply BS 5449 1990 Forced circulation hot water systems BS 6789 1987 Installation of gas fired hot water boilers BS 6891 1989 Gas installations BS 7671 1992 IEE wiring regulations BS 4814 1990 Specification for expansion vessels BS 5482 1994 Installation of LPG The appliance may be installed in any room or indoor area although particular attention is drawn to the requirements of the current I E E Wiring Regulations and in Scotland the electrical provis
43. urve as indi cated in the table 3 The exhaust pipe must extend at least 0 5 m above the ridge of the roof if it is located on a side other than that for the air intake this is not obligatory if the exhaust and air intake pipes are located on the same side of the building 11 2 11 Room Thermostat In order to perform this procedure remove the boiler casing as indicated in Connection section 3 2 Then proceed as follows 1 Rotate down the control panel 2 Open the cover A on the left hand side of the compartment 3 Insert the wire for the connection of the room thermostat into the cable clamp B as indicated in photo 3 4 Remove the grommet C shown in the photo 4 make a hole in it and pass the room thermostat wire through 5 Remove the link located in the terminal block and connect the wire 6 Replace the grommet and the terminal block to their original positions close the cover on the grommet compartment and fasten the wire clamp B in place 7 Ifa remote time clock is to be fitted disconnect the integral time clock plug from the P C B 8 Using a volt free switching time clock connect the switching wires from the time clock following points 1 6 above 9 If using a time clock and room thermostat these must be connected in series as per points 1 8 above Note Only two wire type room thermostat can be used An anti frost device is built in to the appliance s electronic regulation system 12 400 2 1
44. vice versa When the knob is set to lt Ill gt the boiler can serve the dual purpose of providing heat and or hot water for domestic use The supply of hot water for domestic use always takes precedence over heating When the knob is set to lt gt the boiler cuts out the heating system and only provides hot water for domestic use when needed TURNING ON THE CENTRAL HEATING Installation without a room thermostat Turn on the power supply to the boiler by pressing the On Off switch L the green L E D I will then turn on Turn the selector knob to lt Ill gt or lt Ill gt in this position no domestic hot water is produced Regulate the temperature of the water in the boiler by turning the knob The temperature can vary between 42 C and about 82 C Check the boiler temperature on the thermometer with the yellow L E D s F With this type of installation the ambient temperature does not influence the operation of the boiler and the circulation pump always remains in operation C HIN 40 50607080 OO O000 UT008Ae From 5 C to 15 C UTOO8Af UTO08Ah Installation with a room thermostat Turn the selector knob to lt Ill gt Turn on the power supply to the boiler by pressing the On Off switch L the green L E D will then turn on Turn the thermostat knob to
45. xpansion relief valve 6 bar 16 C H expansion Vessel 17 D H W expansion Vessel 18 Drain point 19 C H W Probe 20 Overheat Thermostat 21 D H W Storage with insulation shell e 2 2 1 2 2 2 3 400 INSTALLATION Delivery Reference Standards Siting the Appliance The technical information and instructions provided herein below are intended for the installer so that the unit may be installed correctly and safely There will be three items 1 The fully assembled boiler 2 A documentation bag 3 A separately boxed connection kit WATER REGULATIONS These regulations ensure a good supply of wholesome water and that only approved materials pipes and fittings are used to convey water BUILDING REGULATIONS These are a statutory document and take priority over all other regulations and recom mendations The installation of an unvented hot water storage cylinder is classified as a Controlled Service and Regulation G3 applies To meet the requirements of the Regulation installation of an unvented system should be undertaken by a competent installer All installations of unvented hot water storage systems having a capacity of more than 15 litres should be notified to the relevant Local Authority by means of building notice or by the submission of full plans It is important to note that it is a criminal offense to install an
46. y the time clock will not activate any switching instruction required for the current time You may need to manually select the desired switching state with the S key Thereafter as the unit encounters further switching instructions in the memory in real time it will correctly activate all subsequent Switching instructions Manual Override Switch S With the lt you can change the current setting at any time The Switching program already entered is not altered Reading the programmed switching times Pressing the Prog key displays the programmed switching times until the first free memory location appears in the display If you now press the Prog key once again the number of free memory locations will be displayed e g FR 18 If all memory locations are occupied the display FR 00 appears Changing the programmed switching times Press the Prog key repeatedly until the switching time you want to change is displayed You can now enter the new data See point Entering the switching times Notes on storing switching times If you end your entry of the switching times by pressing the Prog key then the switching time you have entered will be stored and the next memory location displayed Entry of further switching times is also carried out as described in point 4 3 In addition a complete switching command is stored automatically after around 90 seconds provided
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