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Tristar - Optima CB SB

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1. GG 565 352 565 2 Noise at 1m at nominal capacity 2 dB A 41 8 418 418 418 Appliance class II 2H 3P Appliance type B23 C13 C33 C43 C53 C83 Appliance CE Certificate No Key to boiler models CB Combi Boiler SB System Boiler pag 6 3 1 OVERALL DIMENSIONS AND CONNECTIONS Pr A Heating delivery 3 4 b B Heating Retum 3 4 C Domestic hot water flow 1 2 D Domestic cold water inlet 1 2 E Precut for air intake pipe 080 mm F Collar for concentric fume pipe 060 100 G ET 3 4 92167 97 99 E Holes for mounting plate to wall 8mm i 465 185 175 gas 365 present models only position of connections with hydraulic unit installed fig 3 1 1 3 2 HYDRAULIC DIAGRAM OPTIMA CB OPTIMA SB KEY Burner Manual air valve Boiler shell Gas valve Boiler water pressure sensor F Automatic air valve Pump Return temperature sensor F 9 Safety valve E 10 Pressure gauge 11 Expansion vessel 12 Drain tap 13 System Filling Valve gos 14 Domestic water pressure switch 7 LJ 6 15 Domestic water temperature sensor NOORA WD
2. 98 98 1151 155 Class of NOx emissions EN 483 C NEM 5 5 j 5 2 Combustion efficiency s gt 9 9 979 979 9 9 Flue Gas mass range at nominal capacity kg h 435 435 435 435 Residual flue gas discharge head o Pa 173 1 173 73 B Gas consumption 15 C 1013 mbar 5h m h MEN 117 Max production of condensation water WD 24 24 24 24 __ Water content bd ced 24 24 24 __ Available head AT 20 C aaa kPa 28 28 28 28 Max operating pressure bar CN eee 3 3 _ Expansion vessel volume u 10 10 _ 10 Expansion vessel preload press bar l 1 _ l ll Nominal G20 natural gas Press 1 mbar 20 20 S H Nominal 631 LPG gas press mbar uo ren 3 3 _ Max heating Temperature C do 9 9 90 9 Min heating temperature J Ua Li 20 20 2 20 Specific domestic water range AT 30 C 13 4 J J94 Max domestic circuit pressure IIJ L u bar E D ML Min domestic water withdrawal edes 29 doses Max domestic hot water temperature 60 l 60 esse Min domestic hot water temperature 5 Oo NE 30 domo Power SUpply x L LU aaa Viz 1 230 50 230 50 230 50 230 50 Max power consumed nnn W 110 T0 110 110 Degree of electrical protection LL IPX4D IPX4D IPX4D IPX4D co
3. Description 510024 45 concentric bend 510027 60 seal Blue 510028 9 100mm seal Item Part No Description Qty 1 510026 500mm concentric flue pipe 1 2 510027 660mm seal Blue 1 3 510028 e100mm seal 1 By Appointment to H M Queen Elizabeth The Queen Mother Manufacturers of Domestic Boilers Guarantee Our service division will repair or replace free of charge any defect or component that is due to faulty material or workmanship provided that such a defect occurs within the guarantee period 1 Our service division is notified promptly of any defects Under the terms of guarantee the appliance must be made available for service during normal working hours Monday to Friday weekend work not accep ted 2 The Flue Kit is installed in accordance with these instructions 3 The guarantee does not apply if the Flue Kit is repaired or modified by any person other than a member of your service division The guarantee does not cover misuse or improper installation TRIANCO Thorncliffe Chapeltown Sheffield S35 2PZ Tel Sheffield 0114 257 2300 Fax 0114 257 1419 www trianco co uk TRIANCO Issue 1 Rev 0 October 2003 Item No 510005 LB1301 20 10 2003
4. close the escape cocks and when the desired pres sure has been reached close the filling valve tap fig 7 1 4 Control pressure gauge 7 2 STARTING THE CIRCULATING PUMP On initial start up the pump may be slightly noisy This may be caused by a small amount of air still trap ped in the pump In order to let it out proceed as fol lows Loosen cap A adjacent fig and let out any air present fasten cap A If pump not turning remove screw A attempt to turn rotator knob using the 9 7 2 1 device on the shaft taking care not to apply exces sive force so as not to damage it replace cap A checking that there are no water los ses Before proceeding take suitable precau A tions to avoid possible scalds from hot water and risks of damage to compo nents due to water losses from pump 7 3 CHECKING SYSTEM PRESSURE AND POSSI BLE WATER RECOVERY The water pressure is checked periodically on the pressure gauge described in paragraph 7 1 In order to reset the pressure to within the preset values gradually open the filling valve when the desi red pressure has been reached close the tap If during normal operation the appliance frequently looses pressure or the boiler A safety valve comes into operation con sult your installer or service engineer pag 16 8 CONTROL PANEL 8 1 STARTING THE APPLIANCE Press switch A the switch pilot light and the display will go on after a
5. 18 Three way valve 19 Condensation Trap 16 Bypass 17 Delivery temperature sensor 17 P Heating Flow Domestic hot water Flow A B Vtt t C Gas inlet 000 O D E Domestic cold water inlet Heating return pag 7 3 3 FEATURES OF CIRCULATOR GENERATOR LOAD LOSS p H kPa m c a 6 50 5 40 4 30 3 20 2 10 1 0 0 Q m3 h Head available to System at maximum circulator speed Circulator working area TECHNICAL FEATURES OF STANDARD CIRCULATOR INSTALLED Capacity absorbed Maximum speed Minimum speed Note Circulator speed is regulated automatically by boi ler control board 4 UNIT ASSEMBLY 400 The boiler must be installed in an accessible position that complies with the dimensions set out in the drawing below so as to make any mainte nance and cleaning opera tions easier fig 4 1 pag 8 Caution Before mounting the boi ler remove rear cross pieces shown in figure 4 2 For positioning use the tem plate included in the pack and with a spirit level check the boiler is horizontal Then mark and drill the holes for mounting the wall plate and the hydraulic connections Then mark and drill the holes for the boiler moun ting plate insert appropriate rawlplugs in them fix the plate in position and attach the boiler to it 4 1 HYDRAULIC CONNECTION For optimum performance after installation this Boiler and its associated central
6. COn ballel a a 17 Starting the appliance 17 DEED Aaen pag 17 Reading and setting boiler parameters pag 19 Operation with external probe pag 20 Installing and connecting external probe pag 20 Setting heating curve pag 20 Adjusting heating curve pag 20 Combustion analysis pag 21 Conversion from natural gas to propane or viceversa with KITGPLO2 pag 22 Adjusting maximum working capacity of boiler in heating function pag 23 Checking boiler safety equipment pag 23 USC PUI UD tee pag 23 Temporary failure and blockage of appliance pag 24 Identification codes of irregularities causing a temporary failure or fault pag 24 List of fault codes pag 25 Examples of installation pag 26 ACCESSOS gege pag 27 Periodic appliance maintenance and cleaning pag 28 Short paris list Ge pag 31 Balanced flue au E pag 33 This booklet together with the user and service manual should be kept by the user and must always accompany the boiler even when passed on to ano ther owner or user and or when tran
7. ME 2 m wes bad O DHW tank z M Q R 1 A NTC temperature Sr E E sensor Suu ge E X50 x30 x40 Re e thermostat 5 71177711 Ce e I TI x 27525 75 x i h na z Programmer USER o st QAA73 tee INTERFACE NZ Q Accessories available on request To be fitted by the installer AGU 2 303A153 Avaiable only for SB models Warning they cannot be used at the same time fig 6 1 pag 15 7 PRELIMINARY CHECKS TO BE CARRIED OUT BEFORE APPLIANCE START UP Before starting the boiler check that the gas line is not closed upstream of the appliance the gas and water stopcocks are open the appliance has been correctly connected to the mains electricity and in such a way that the phase neutral polarity is observed the system has been correctly filled with water see point 7 1 7 1 LOADING THE SYSTEM In order to fill the system gain access to the inside of the sealed chamber loosen the automatic escape valve cap on the automatic air vent fig 7 1 1 and screw V of the manual escape cock on the top of the exchanger fig 7 1 2 and gradually open the filling valve tap manual air vent automatic air vent The boiler operates correctly at a water pressure bet ween 1 and 1 5 bar this should be checked on the pressure gauge located on the lower side of the boiler Once all the air has been vented from the system
8. climb on to the unit INSTALLATION AND INITIAL START UP OF THE BOILER MUST BE CARRIED OUT BY QUALIFIED PERSONNEL IN ACCOR DANCE WITH CURRENT NATIONAL REGULATIONS ON INSTALLATION AND ANY DIRECTIONS FROM LOCAL AUTHO RITIES AND PUBLIC HEALTH BODIES When turning the boiler on or off the fan may make a slightly lou der noise because of the rapid increase or reduction in the number of rotations The expansions of the materials that make up the unit due to rises or falls in temperature may cause slight tapping noises This may normally occur after the boiler is turned off or on An excessively high flow rate of domestic hot water may cause a slight noise in the circuit and a drop in temperature at the domestic water outlet 1 1 USE OF ANTIFREEZE LIQUID If antifreeze substances are used in the A system check carefully that they are compati ble with the aluminium that forms the body of the boiler In particular DO NOT USE ordinary ETHYLENE GLYCOL since it is corrosive in relation to aluminium and its alloys as well being toxic Trianco suggests the use of suitable antifreeze products and in the correct dose which will prevent rust and incrustation taking place Periodically check the pH of the water antifreeze mixtu re of the boiler circuit and replace it when the amount measured is lower than the limit stipulated by the manu facturer DO NOT MIX DIFFERENT TYPES OF ANTIFREEZE TRIANCO is not liable for damage caused
9. engineer FAULT TEMPORARY FAILURE CODE DISPLAY A fault or temporary failure is indicated by a three figure code appearing on the display Two of them can be presen ted on the display and then the code is indicated showing alternatively the first figure and then the other two eg for the code 154 the display will be shown indicating first 1 and then 54 The display is also accompanied by the alternate flashing of the LEDS C and bar This display is repeated twice followed by an interval of around 7 seconds in which the delivery temperature is indi cated The code and delivery temperature are displayed in turn continuously 14 1 IDENTIFICATION CODES OF THE IRREGULARITIES CAUSING A TEMPORARY FAILURE OR FAULT They indicate the type of irregularity by means of a three figure number Delivery T C gt Max T C permitted CAUSE EFFECT REMEDY burner turned off circulator in post circulation Boiler water pressure too low in SB models only Restore pressure by following directions in para 7 3 does not light or show flame attempt to restart boiler after three attempts goes to fault Return T C gt delivery T C or difference in temperature between delivery and return too high or boiler temperature increase too rapid boiler turned off circulator in post circulation No water circulation in boiler Air in system blow it out para 7 1 Circulator blocked follow directions in para
10. few seconds the boiler is ready for ope ration C The boiler temperature appears on the display A fig 8 1 1 8 2 USE OF THE CONTROLS HEATING TEMPERATURE REGULATION KNOB B When the heating is activated with this knob the heating circuit water temperature is set The figure set is displayed for a few seconds directly on the display after which the boiler temperature B reappears fig 8 2 1 If the external probe is fitted by operating knob B the calculated ambient temperature is displayed for a few seconds after which the boiler temperature reap pears On off switch Heating temperature setting control knob O Domestic hot water temperature setting control knob MODE button Boiler automatic operation indicator LED Heating operation indicator LED RESET button Burner operation indicator LED Fault alarm LED SELECT button Boiler temperature reading indicator LED D E F G H L M N Boiler operating diagnostic phase readin lr LED B MAINTENANCE button Display DOMESTIC HOT WATER TEMPERATURE REGULATION KNOB C For models CB and for the SB ones with a boiler unit with NTC sensor connected domestic hot production is always activated The figure set is displayed for a few seconds directly on the display after C which the boiler temperature reap fig 8 2 2 pears In model SB used for heating only regulation
11. heating system must be flushed in accor dance with the guidelines given in BS7593 Treatment of water in domestic hot water central heating systems It is also advisable to install suitable stop gate valves on the systems delivery and return piping AN e fig 4 3 Caution the pressure relief valve is set at 3 bar therefore all pipework fittings etc should be suitable for pressures in excess of 3 bar The pressure relief discharge pipe should be not less than 15mm dia run continuously downward and preferably over a drain It should be routed in such a manner that no hazard occurs to occupants or causes damage to wiring or electrical components The end of the pipe should terminate facing down and towards the wall The discharge must not be above a window entrance or other public access Consideration must be given to the possibility that boiling water steam could discharge from the pipe For hydraulic connection of the boiler use the equipment kit and follow the directions given on the attached instruction sheet The 10 Ltr expansion vessel supplied with the boiler is sui table for a system volume of approx 140 Ltr An additional vessel will be required for system volumes above this following this formula V 0 07xC V Expansion vessel volume Ltr C Water system volume Ltr 4 2 FLUE SYSTEM Important since the TRISTAR OPTIMA is a conden sing boiler exhaust temperature is very low therefore itis nor
12. in rotation 1 reading of domestic hot water temperature flas hing LED C m 3 boiler operating phase reading LEDS C and bar off at that moment the active phase is shown by codes that have the following meanings 0 pause no heat request 10 system heating mode 11 domestic hot water production mode 4 Fault code or information on boiler operating sta tus alternating flashing between LEDS C and bar By pressing the SELECT button once again the dis play returns to reading 1 in all cases after some minutes the boiler temperature display is reset RESET Button RESETTING THE APPLIANCE After an operating irregularity the boiler stops for safety rea sons fault the red LED goes on To reset the operation 5 4 Reset fig 8 2 5 action must be taken by hol ding down the fault RESET button for around 2 seconds If the fault has to be checked again check that the gas stopcock and those possibly fitted on the heating deli very and return pipes and domestic water inlet and outlet pipes are open and that the boiler water pressu re is correct if the fault persists call your installer or service engineer If it is accidentally pressed do not press any other but ton and switch off and relight the boiler using button A Further uses of the maintenance button are described in paragraphs 10 and 12 pag 18 8 3 READING AND SETTING BOILER PARAMETERS In or
13. system booklet prepared as stipulated by law It is forbidden to touch the boiler either with bare feet and or with wet parts of the body In order to clean the outside parts turn off the boiler turn off the power at the isolating switch Clean with a damp cloth Do not use detergents and or harsh liquids or toxic products In order to carry out any work on the boiler do not mount it on chairs stools ladders or unstable stands Before carrying out any work on the boiler always turn the power off at the isolating switch The user is forbidden to carry out any maintenance work on the boiler that must be carried out by a specialised engineer In the case of structural work or maintenance near the pipes flue systems or any accessories switch off the appliance and when the work is completed have the system checked by a qualified engineer to ensure the system is in good working order 2 GENERAL FEATURES The TriStar OPTIMA boiler is a sealed type electronic condensing gas wall mounted boiler with high seasonal efficiency The burner of premix type guarantees high efficiencies and safe combustion at all power ratings with minimal pollutant emissions The electronic board provides for a periodic selfdiagno stic of the functions with indications of any irregularities or failures by means of a code that appears on the con trol panel display It is simple to use and has fully automatic operation and thus user operatio
14. wires must pass under panel P and retained using cable clips F fig 5 1 fig 5 4 fig 5 5 remove screws V1 and V2 that secure control To wire in any external valves it is necessary to gain panel fig 5 2 access to the inside of the control panel To do this Lower the control panel until it stops approxima remove rear screws C and take off protection panel P tely 45 To unlock it and bring it down completely lift up For electrical assembly and connection follow the front control panel cover until it is supported on directions given on the instruction sheets attached control panel and lower them both together fig 5 3 6 ELECTRICAL CONNECTIONS After having fixed the boiler to the wall and connected all the hydraulic connections from the system make the electrical connections To gain access to the board follow the directions in paragraph 5 Access to boiler pass all electrical cables through one of the cable ducts For related connections to the board consult the wiring dia gram below IMPORTANT In connecting the appliance to the mains strictly obser ve the phase neutral polarity stated in the diagram Electrical wiring to the boiler must be in accordance with current E E wiring regulations NOTE The method of connection to the electricity supply must facilitate complete electrical isolation of the appliance Connection may be via a fus
15. 7 2 pag 24 14 2 LIST OF FAILURE OR FAULT CODES Code 10 20 28 40 50 61 62 78 81 82 91 92 100 110 111 119 133 134 135 140 148 151 152 153 154 160 161 164 Description Short circuit of external probe Delivery probe Display 20 alternating to oo probe short circuit Display 20 alternating to probe disconnected Incorrect setting made by means of remote control QAA73 fume probe not used Return probe If display in b1 oo probe short circuit If display b1 probe disconnected DHW probe boiler does not produce domestic hot water CB mod and SB mod with boiler unit with NTC sensor Display domestic hot water temperature see use of SELECT button in para 8 2 If display 2 oo probe short circuit If display probe disconnected Disturbances in remote control Line or remote control breakdown Incorrect configuration of pressure sensor Bus line short circuit or disconnected not used Incompatible LPB address not used Fault inside board Fault inside board Incorrect configuration of clocks in connection with RVA not used Fault due to overtemperature Temporary failure due to overtemperature Boiler water pressure too low for SB models only No flame after end of safety time repeats attempt to light three times then goes to fault Flame disappears during operation Fan malfunction Incorrect setting of segment in connection with RVA not used Incompatibi
16. BS 7593 Treatment of water in domestic hot water centrai heating systems WARNING The addition of anything that may interfere with the normal operation of the appliance without the express written permission of Trianco Ltd could invalidate the appliance warranty and infringe the Gas Safety Installation and Use Regulations Incorrect installation may cause harm to people animals and pro perty The manufacturer is not liable for damage caused by incorrect installation and by non observance of the instructions accompanying the boiler Installation maintenance and any other operation must be carried pag 3 out in compliance of current regulations and instructions supplied by the manufacturer Installation is the purchaser s responsibility The boiler is supplied in a carton pack when it is removed ensure that the appliance is complete and that all the parts are supplied The packing components clips plastic bags polystyrene foam etc must be kept out of reach of children since they are a hazard for them The technical notes and instructions contained in this document are to help fitters install the system correctly Any repair should be carried out using solely original spares and operations involving the removal of the appliance must only be car ried out by qualified engineers Failure to abide by the above exempts the manufacturer from any liability and may jeopardise the the safety of the unit It is forbidden to
17. LL THICKNESS IS WITH KIT SUPPLIED EXTRA PIPES CAN BE PURCHASED TO EXTEND TO 4 MTRS 175 MIN HIGH LEVEL HORIZONTAL BALANCED FLUE 437mm 17 MAX 175 MIN T Note 500mm Extension pipe must be used for left hand side MAX MIN WALL THICKNESS IS WITH KIT SUPPLIED EXTRA PIPES CAN BE PURCHASED TO EXTEND TO 4 MTRS pag 11 VERTICAL BALANCED FLUE KIT SEE PAGE 32 Installing the Balanced Flue Kit 1 10 11 Having decided the position of the boiler accurately mark out the position of the boiler fixing holes using the template provided Drill 2 8mm holes to accept rawlplugs and mounting bolts Cut a 150mm hole in the ceiling and roof Determine the flue length required ensuring the maximum permissible flue length is not exceeded If it is necessary to cut one of the pipes to achieve the required ensure the inner is cut 20mm longer than the outer and both inner and outer are de burred Fit 060mm black seal to the inner spigot on the boiler flue off take Fig 1 Fit the 2100 and 60mm blue seal into the concentric flue pipes If possible pre assemble the entire flue on a flat surface ensuring all sections are pushed firmly home Secure bot tom section to boiler with clamp Fit a roof flashing sleeve to the roof not supplied and insert Vertical Flue Terminal through flashing from the outsi de Starting at the appliance end assemble the extension pipes ensuring each joint is pushed firmly h
18. RTS LIST POS DESCRIPTION CODE 10 BOILER BOARD A160 1 12 USER BOARD A161 16 TRANSFORMER 01001 19 IGNITION ELECTRODE BFEO01019 20 ELECTRODE GASKET CFG01009 21 DETECTION ELECTRODE BFEO1064 23 CENTRIFUGE FAN W150 4 32 SENSOR 9300 1 35 CIRCULATOR P158 35 1 AUTOMATIC ESCAPE VALVE G207 1 36 MINIMUM PRESSURE GAUGE Q122 38 WATER GAUGE G603 3 39 GAS VALVE UNIT GRVALOO1 56 IGNITION TRANSFORMER T134 00 EXTERNAL PROBE S736 1 pag 32 19 BALANCED FLUE KITS 5010 HORIZONTAL BALANCED FLUE KIT 5011 1000mm CONCENTRIC FLUE PIPE 5012 VERTICAL BALANCED FLUE KIT 5013 90 CONCENTRIC BEND 5014 45 CONCENTRIC BEND N 5015 500mm CONCENTRIC FLUE PIPE pag 33 Part No Description 510021 terminal 510023 90 concentric bend 510031 Clamp with seal 510029 60mm seal Black 510027 60mm seal Blue 510028 100mm seal 510033 Wall seal 510026 Part No 500mm concentric flue pipe Description N IN INO e 510025 1000mm concentric flue pipe 510027 260mm seal Blue 510028 9 100mm seal Part No Description Qty 1 510022 terminal with cap 1 2 510032 wall clamp 1 Part No Description 510023 90 concentric bend 510027 260mm seal Blue 510028 Part No 9 100mm seal
19. TRIANCO RISTAR OPTIMA 28 CB AND 28 SB WALL MOUNTED GAS BOILERS TRIANCO INSTALLATION INSTRUCTIONS 2 1 2 2 2 3 3 1 3 2 3 3 4 4 2 5 7 1 7 2 7 3 pag 3 Use of anti freeze liquid pag 4 Features under floor heating system pag 4 Safety advice pag 4 General features pag 5 Winter operation pag 5 Summer operation CB models pag 5 Hard water areas pag 5 Technical features of the appliance pag 6 Overall dimension and connections pag 7 Hydraulic diagram pag 7 Features of circulator generator load loss pag 8 Unit assembly scs the pag 8 Hydraulic connection pag 8 FIRE Cru Me pag 9 Access to boiler Ls tet ette sues pag 14 Electrical connections pag 15 Preliminary checks to be carried out before appliance SIOFUUD EE r bag l6 Loading the system pag l6 Starting the circulating pump pag 16 Checking system pressure and possible water _ pag 16 8 1 8 2 8 3 9 1 9 2 9 3 4 1 14 2 pag 2
20. der to read and set the values of some boiler parameters the SELECT button is used By keepingit pressed a series of letters A b C d and P appear in rotation on the display By releasing the button when the letter appears and pressing it again briefly the desired parameter is acti vated a number appears to the right of the letter In order to return the display to standard parameter 1 boiler delivery temperature enable parameter 1 After approximately 8 minutes from the last operation performed The display will return to parameter 1 The series of parameters which can be accessed are as follows One letter only A1 letter of boiler delivery temperature C A2 letter of domestic hot water temperature C A3 not used 4 letter of boiler operating phase AO Technical value according to programming of the board b1 letter of boiler return temperature C b2 not used b3 not used b4 letter of outside temperature C b5 not used b6 not used b7 second zone circuit temperature C C1 letter of ionisation current value uA C2 letter of number of fan revolutions thousands and hundreds fan PWM 96 C4 letter of boiler relative heat output value C5 not used C6 not used d1 Setpoint calculated on basis of operation in domestic hot water or heating d2 value of calculated temperature of boiler delivery C d3 Display of value of ambient temperature set C If
21. eating fig 15 2 pag 26 16 ACCESSORIES QAA73 PROGRAMMER cod E1226 92 Modern remote control according to weekly and hourly setting with yearly date setting which has functions of monitoring boi ler and programming zone sensor alarm indicators and advanced diagnostics NATURAL GAS TO PROPANE CONVERSION KIT cod KITGPLO2 fig 16 2 pag 27 17 SERVICING THE BOILER Annual Servicing For reasons of safety and economy it is recommen ded that the boiler is serviced annually Servicing must be performed by a competent person Ensure that the boiler is cool Ensure that both the gas and electrical supplies to the boiler are isolated Caution All gaskets removed must be checked and possibly replaced if they are damaged or worn ACCESS BOILER To access internal parts of the boiler proceed as fol lows isolate electrical supply to boiler open boiler front control box cover remove upper screws A from front cover gently lift up cover and pull towards you A 1 fig 17 1 access inside of sealed chamber remove screws D and take off front panel D1 fig 17 2 i When replacing front panel D1 first attach the top side of panel on to sealed chamber and then move panel into position and replace screws remove screws V1 and V2 that hold control panel in position fig 17 3 tolower control panel completely lift up front con trol box cover until it is su
22. ed double pole isolator with a contact separation of at least 3mm in all poles and ser vicing the boiler and system controls only In the event of replacement use a cable with the same features as that fitted section 3 x 0 75 maximum exter nal o8mm To be fitted only with floor heatin ing in Ing Warning respect the in 230V 24V dicated polarity pha se neutral when connec AC 24V ting the mains Transformer high temp safety therostat for floor heating ZI electrical supply o 25 P 5 San an motor 230V 50 Hz z 2 py 8 ene SUB C x S 5 PWM 1H Boiler pump p pu DHW pressure 230 VAC lt lt switch CB model T eds Configurable connection 230 VAC 1 lt 17 ww Diverting valve 7 XG heating thermostat SB model S VAR AC Domestic Hot water e IEEE tr H E BOILER BOARD s H H Ge boiler lonisation SN rh a De Gi EE uen DHW tank thermostat 5 LMU 54 030A153 wh probe CB model Q SB model Gas valve mains qs 124 24 Return flow temp probe Meme gas 230 VAC Er D 24 4 Boiler temp probe N 8 fog ce r Men EE Ee d e ul External probe V e i Q QAC34 101 Ignition Ignition o gt gt electrode E
23. ets for analysis analysis and connect the fume analyser probe therein fig 10 1 Exhaust Air Gases Combustion analysis is carried out in heating mode if however there is a situation in which it is difficult to use the heating system eg in summer or with a floor radiant panel system it is possible to use the domestic hot water circuit by proceeding as follows rotate the control panel forward para 5 access to boiler with a screwdriver release the three way valve motor M faste ning spring taking care to hold the motor in one hand fig 10 2 remove the motor open one or more hot water taps in order discharge the heat produced ik the boiler in calibration and per 1 form analysis following the direc fig 10 2 tions below On completion of the analysis close the taps replace the motor push it downwards and insert the fastening spring back in its hou sing T a e T Capacity regulator clo sure 1 Pressure regulator 2 Capacity regulator fig 10 3 Analysis of maximum heat capacity Run the boiler in maximum operation capacity by holding down MAINTENANCE button for slightly over 7 seconds the display changes the presentation flashing alternately the boi ler delivery temperature and the number 1 00 while the fault red LED flashes from this moment the boiler will operate at maximum in heating mode pag 21 Wait for the boiler to stabilise and pe
24. external probe is not present value is fixed at 20 C d4 setting of value of domestic hot water temperatu re C d5 not used d6 maximum fan speed in heating function Parameters that can be set In order to alter the value of the parameter use at the buttons SELECT to increase it and MAINTENANCE to decrease it In order to store the new value in the memory hold down the SELECT button until the dis play value flashes twice and then release the button P3 not used P4 not used P5 Value of slope of heating curve P6 Value of parallel shift of heating curve pag 19 9 EXTERNAL PROBE THIS MUST BE FITTED OTHERWISE BOILER WILL NOT PERFORM AT THE MAXIMUM EFFICENCY 9 1 INSTALLING AND CONNECTING EXTERNAL PROBE DO NOT INSTALL EXTER CORRECT INSTALLATION POSITION NAL PROBE IN POSI TIONS INDICATED PROBE SHOULD BE INSTALLED ON BELOW A NORTH ORNORTH EAST FACING WALL AND SHELTERED FROM THE EFFECT OF THE SUN S RAYS AND FROM OTHER HEAT SOURCES fig 9 1 2 To mount the external probe remove protective cover as shown here insert probe cable through hole intended to be used We recommend mounting a rubber cable duct if the rear route is R used see ref 1 a suitable 2 cable holder if the lower is used see ref 2 cable duct and cable holder are not sup plied eg If solution 2 is used remove the lower section the protecti ve cover connect
25. has no effect Note The settings made with knobs B and C Heating and domestic hot water temperatures remain unchanged even after power supply fai lure MODE BUTTON The MODE button makes it possi ble to switch from summer to winter operation and viceversa Pressing the button activates or deactivates the heating indicated by the LED F going on On o O ode 77 fig 8 2 3 If the external temperature probe is connected to the boiler switching from winter operation heating dome stic hot water to summer operation domestic hot water is made automatically when the outside tempe rature is higher than 20 C pag 17 In this case the LED AUTO lights up while the LED F if lit indicates winter operation if not lit it indicates sum mer operation In the case where you wish to deactiva te automatic switching press the MODE button the LED AUTO goes out SELECT BUTTON When in operating phase the MAINTENANCE BUTTON The maintenance button is used by the maintenance engineer to perform the cali bration and required for cor fig 8 2 6 rect operation of the appliance UNDER NO CIR CUMSTANCES MUST IT BE USER OPERATED BY THE digital display indicates the boiler delivery temperature LED C lit and continuous CC bert Q Select fig 8 2 4 As well as this by repeatedly pressing the SELECT button the following can be dis played
26. ial attention to inserting the choke correctly in the mixer the side recess of the choke should match the mixer guide see fig 17 10 Ss D It Gas mixer un Location fig 17 10 rail Location slot MAINTENANCE OF CONDENSATION DRAIN SIPHON remove connection of condensation drain from sea led chamber fig 17 12 pag 30 unscrew fixing screw S from siphon support clamp fig 17 13 fig 17 14 When siphon has been removed undo parts 1 2 and 3 fig 17 15 check that in cap 2 there are no deposits and if necessary remove them With a brush clean siphon channels r r r 2 9 O fig 17 15 2 18 SHORT PARTS LIST OPTIMA CB SHORT PARTS LIST 45 POS DESCRIPTION CODE 10 BOILER BOARD A160 1 12 USER BOARD A161 Xk S lt N 16 TRANSFORMER 1001 Q 19 _ IGNITION ELECTRODE BFEO1019 21 19 32 21 DETECTION ELECTRODE 01064 23 CENTRIFUGE FAN W150 4 32 IMMERSION SENSOR S300 1 36 CIRCULATOR P158 37 AUTOMATIC ESCAPE VALVE G207 1 39 WATER GAUGE G603 3 40 GAS VALVE UNIT GRVALOO 1 41 CIRCULATOR CONSENSUS DIFFERENTIAL PRESSURE GAUGE 1998099 45 ACTUATOR M227 46 HEAT EXCHANGER G1325 4 49 DOMESTIC WATER DIFFERENTIAL PRESSURE GAUGE 01043 61 IGNITION TRANSFORMER T134 00 EXTERNAL PROBE S736 1 pag 31 OPTIMA SB 39 R lt 21 19 32 36 35 35 1 38 12 00 SHORT PA
27. lity of parts in connection via LPB not used Fault inside board Incompatible setting of parameter values not used Manually activated safety fault reset boiler by holding down RESET button for two seconds Return temperature higher than delivery temperature or boiler temperature increase too rapid Fan does not reach required speed Fan exceeds maximum speed set No water circulation in boiler for CB models only pag 25 15 EXAMPLES OF INSTALLATION OPTIMA CB AND SB mob SINGLE HEATING CIRCUIT CONNECTION WITH AMBIENT THERMOSTAT OR QAA73 PROGRAMMER WITH ROOM THERMOSTAT WITH QAA73 PROGRAMMER 75 75 F 2 A Remove link F F F e A Q Q Q Q CR terminal board terminal board see para 5 see para 5 SE external probe CR QAA73 programmer room thermostat Sl high temp safety therostat for floor heating fig 15 1 OPTIMA SB SINGLE HEATING CIRCUIT CONNECTION WITH ROOM THERMOSTAT OR QAA73 PROGRAMMER AND AN EXTERNAL TANK FOR DOMESTIC HOT WATER PRODUCTION WITH ROOM THERMOSTAT WITH QAA73 PROGRAMMER fN S S S e S F 2 2 0 O 2 Q Q O O terminal board terminal board see para 5 see para 5 SE External probe QAA73 programmer room thermostat YD 3 way valve for hot water production TB Domestic hot water tank temperature probe Sl high temp safety therostat for floor h
28. mal for part of the residual water vapour in the exhaust fumes to be capable of condensing in the flue pipe You are advised to pay attention to the following a to the positioning of the exhaust terminals they may drip and also produce a ploom of condensa tion b to the incline of the flue pipe so as to avoid con densation becoming stagnant C to the correct positioning of the condensation col lection parts d to connecting the condensation drain correctly The TRISTAR OPTIMA boiler is a type C certified Appliance sealed boiler Connection of the flue exhaust pipes is made accor ding to the diagrams attached For the parts to use please refer to the TRIANCO catalogue of boiler installation accessories IMPORTANT As with all flues the kit must be installed taking due account of the current issue of BS5440 parts 1 amp 2 and timber frame housing REF IGE UP 7 1998 Also note that the requirements will vary depending upon the kit being installed Guidance is provided but unless otherwise stated always comply with recom mendations of the relevant codes of practice The following guidelines indicate the general require ments for siting balanced flue terminals Hecommendations for flues are given in BS 5440 Pt 1 If the terminal discharges onto a pathway or passage way check that combustion products will not cause a nuisance and that the terminal will not obstruct the passageway If a terminal is les
29. mmendations of the relevant codes of practice EXPOSED PIPE any pipe exposed to the elements should be protected with a suitable material and maintained regularly Installing the Balanced Flue Kit 1 Having decided the position of the boiler accurately mark out the position of the terminal and boiler fixing holes using the template provided Cut a 120mm hole through the wall to accept the terminal and drill 2 8mm holes to accept rawlplugs and mounting bolts Fix the boiler to the wall using the wall mounting bracket Pass the terminal through the wall and fit the internal wall seal to the terminal 4 Fit the 60mm black seal to the inner spigot on the boiler flue off take Fig 1 5 Fu the 100mm and 60mm blue seal into the 90 con centric bend 6 Fit the 90 concentric bend into the boiler flue off take and secure in position with clamp 7 Slide the terminal into the 90 bend ensuring it is pushed home firmly and ensure wall seal is fitted against wall Fit the external wall seal to the terminal To extend the terminal length use the 500mm concentric pipe and cut to length ensuring the inner is cut 20mm lon ger than the outer NOTE For High Level Balanced flue Kit 1 Measure vertically 950mm max from position of the cut out on the template to give position of terminal required 2 Cut the 1000mm concentric pipe to required length Fit the 0100 and 60mm blue seal into the pipe 3 Fit the concen
30. ns are reduced to the basic simple operations The production of domestic hot water is always activa ted and has priority over the heating function The external temperature probe OPTIMAZER must be fitted to ensure maximum running efficency 2 1 WINTER OPERATION The boiler is started and regulated automatically so as to meet the requirement of the heating system With the outside temperature probe the system s water temperature is regulated automatically according to the heating curve set guaranteeing maximum comfort in all conditions DOMESTIC HOT WATER DRAW OFF CB MOD When calling for domestic hot water the boiler by means of an appropriate sensor automatically switches over in order to guarantee supply of the correct amount of water at the desired temperature Regulation of the domestic water temperature is also carried out precisely and automatically by the boiler s electronics The domestic hot water comfort function is activated automatically at the end of every withdrawal and gua rantees a quick response for subsequent withdrawals for the programmed time pag 5 2 2 SUMMER OPERATION CB MODELS The boiler is started and regulated automatically so as to meet the domestic water requirement Switching from summer to winter operation and vicever sa may be carried out by hand or automatically if exter nal probe present depending on the outside temperatu re set 2 3 HARD WATER AREAS If the b
31. oiler is to be installed in a area recognised for having hard water it is recommended that a suitable water treatment device is installed in the mains supply to the boiler The water hardness can be determined by using the standard test paper or by contacting your local water authority 3 TECHNICAL FEATURES OF THE APPLIANCE Operating gas GAS G20 1 LPG G31 OPTIMA model B SB cB SB Maximum heat output Qmax 80 60 C s KW 280 280 280 1 280 _ Minimum heat output 80 60 C KW 56 56 739 3 Maximum heat output 0720 KW 297 297 29 7 297 _ Minimum heat output 50 30 C kW 8 8 Maximum heat Ange KW 287 287 287 287 Minimum heat range kW 7 5 Working efficiency at max output 80 60 C vv SL 9 6 976 976 97 6 Working efficiency at max output 50 30 C BL 1035 1035 103 5 103 5 d Working efficiency at 30 max output Average T 50 C 107 0 1070 1070 1070 Working efficiency at min output 80 60 C 982 982 973 97 3 Working efficiency at min output 50 30 C 106 7 Flue losses with burner in operation SL 21 21 21 21 Flue losses with burner extinguished SL SOT 0 1 lt 0 1 0 Shell losses SL D 039 D 0 3 Flue Gas temperature 22 C 73 0 730 730 90 2 in dry fumes nnn 0
32. ome Ensure none of the flue joints are situated within the joist space Fit ceiling plate centrally around pipe ensuring that the outer flue pipe has a minimum clearance of 25mm from any combustible material Pack space with glass fibre insulation Fit wall clamp around terminal and secure to roof member ensure weight of terminal is carried by the wall clamp and not the roof flashing sleeve Ensure flue is adequately supported IMPORTANT FLUE SEALING TO FIT FLUE PIPES TOGETHER IT IS ESSENTIAL TO APPLY A THIN BEAD OF LUBRICANT E G WASHING UP LIQUID VASELINE AROUND ALL RUBBER SEALING RINGS AS THE FLUE SYSTEM OPERATES UNDER POSITIVE PRESSURE IT IS ESSENTIAL TO ACHIEVE A TOTAL SEAL ON ALL FLUE JOINTS VERTICAL BALANCED FLUE pag 12 6000mm MAX 90 BEND 1000mm 45 BEND 750mm C D 4000mm NOTE For each additional elbow reduce straight lengths by the relevant elbow dimension 90 1500mm and 45 750mm pag 13 5 ACCESS TO ELECTRICAL PANEL FOR CON CONTROL NECTING ADDITIONAL UNITS PANEL BOILER In order to access the electrical panel proceed as follows CONTROL disconnect voltage to appliance PANEL COVER open boiler front control panel cover remove upper screws A from front cover gently lift cover and pull towards you fig 5 3 In order to connect any external controls and wire the controls into the specific terminals on terminal board M A A fig 5 5 1 The
33. pported on the control panel and then lower both panels together fig 17 4 CONTROL PANEL BOILER CONTROL PANEL COVER fig 17 4 pag 28 Gently push the left hand side of the sealed chamber until it detaches fig 17 6 Distributor D is fixed to conveyor B if necessary distributor can be removed and cleaned fig 17 7 Remove screws F1 remove mixer G from fan and clean it inside using a brush or compressed air fig 17 8 fig 17 5 BOILER SHELL MAINTENANCE Remove pneumatic and electrical fan connections and disconnect gas pipe lf itis deemed necessary clean fan F with brush To prevent dust possibly infiltrating the fan motor bearing it is advisable NOT TO USE Remove nuts E1 unthread MIXER E FAN F compressed air unit fig 17 6 Extract internal choke G and inspect O ring with the aid of a brush or compressed air clean the SCH choke fig 17 6 N Remove nuts A1 loosen nuts A2 remove conve yor B and extract burner C fig 17 6 fig 17 8 With the aid of a brush clean burner as shown in fig 17 7 take care not to damage outside of bur ner pag 29 Remove flue H from boiler shell fig 17 6 and with the aid of a brush and vacuum cleaner clean between the exchange rungs fig 17 9 When the parts are replaced take care to reinsert them in the correct order pay spec
34. remain off for long periods at tem peratures below zero it is advisable to drain off the water This operation is essential if there are no anti freeze additives in the system pag 23 14 TEMPORARY FAILURE AND FAULT WITH APPLIANCE TEMPORARY FAILURE Temporary failures are due to some operating parameters being momentarily exceeded and are different from those of faults in that manual reset by means of the RESET button is not necessary Temporary failure is indicated by the alternating flashing of the LEDS C and bar If the operating conditions return to normal figures the appliance is reset and resumes normal operation otherwise the status of the fault is checked LED on The resetting of the functions may be automatic or may require the operator to do it depending on the case For example if the system pressure falls below the minimum figure see para 7 3 once restored the boiler resumes its functions FAULT WITH THE APPLIANCE When an operating irregularity occurs the boiler stops and goes into fault displaying this condition by the red LED going on and the LED C and bar alternately flashing Numbers appear on the diplay representing the fault code see below An attempt may be made to reset the operation by holding down the RESET button for around 2 seconds after which the boiler performs self diagnostic cycle and possible restart if the fault persists call your local installer or service
35. rform combustion analysis by checking what is described below Nominal heat capacity 28 7 Check calibrations values natural gas G20 9 3 9 7 LPG G31 10 8 11 3 CO at MAXIMUM OUTPUT If the values found are different proceed as follows Turn gas valve capacity regulator 2 figure 10 3 clockwise to increase anticlockwise to decrease value of CO2 reading iven the sensitivity of the screw minimal adjustments will be sufficient wait several seconds until the CO2 is stabilised then check its value and if necessary repeat theoperations Analysis at minimum heat capacity From the above situation to run boiler operation to minimum capacity rotate domestic hot water temperature regula tion knob anticlockwise up to end of x stroke the display changes the presen tation flashing alternately boiler delivery NE temperature and the number 0 from fig 10 4 this moment the boiler will operate at minimum yw Wait for the boiler to stabilise perform combustion analysis by checking to the settings shown below Minimum heat capacity 5 7 Check calibrations values natural gas G20 8 8 9 2 LPG G31 vol 10 4 10 8 CO at MINIMUM OUTPUT If the values found are different proceed as follows Turn gas valve pressure regulator 1 figure 10 3 clockwi se to increase anticlockwise to decrease value of CO2 read given the sensitivity of the screw minimal adjustments will be sufficient Wait several
36. s 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 provided Terminal position with minimum distance mm A Directly below an openable window air vent or any other ventilation opening 300 B Below gutter drain soil pipe 150 C Below eaves 200 D Below a balcony car port roof 200 E From vertical drain pipes and soil pipes 75 F From internal or external corners 300 G Above adjacent ground or balcony level 300 H From a surface facing a terminal 600 Facing a terminal 1200 J From opening door window in carport into dwelling 1200 K Vertically from a terminal on the same wall 1500 L Horizontally from a terminal on the same wall 300 M Above an opening air brick opening window etc 300 N Horizontally to an opening air brick opening window etc 300 Vertical Flues minimum distance to edge of terminal mm P Above the roof level to base of terminal 300 Q From adjacent wall to flue 300 R From adjacent opening window 1000 S From another terminal 600 HORIZONTAL BALANCED FLUE KIT SEE PAGE 32 IMPORTANT As with all flues the kit must be installed taking due account of the current issue of BS 5440 parts 1 amp 2 and tim ber frame housing REF IGE UP 7 1998 Also note that the requirements will vary depending upon the kit being installed Guidance is provided but unless otherwise sta ted always comply with the reco
37. seconds until the CO2 is stabilised then check its value and if necessary repeat theoperations On completion of calibration recheck CO2 values at maximum output If the values found remain between the limits shown in the table no further calibration must be made After these operations it is advisable to check the gas capa city at the meter following the directions stated in the table of technical details N B After completing the checks the boiler must be retur ned manually to normal operation by holding down MAIN TENANCE button for approximately 2 seconds 10 1 CONVERSION FROM NATURAL GAS TO PROPANE OR VICE VERSA WITH KITGPLO2 To convert boiler FROM NATURAL GAS TO PROPANE GAS proceed as follows disconnect voltage to appliance close gas tap access internal parts in sealed chamber see para 5 access to boiler fig 10 1 1 unscrew ring nut A shown in figure and loosen threaded con nection insert capacity reducer B as shown in figure below fig 10 1 2 check condition of gasket and if necessary replace it reconnect gas pipe and open gas tap reconnect voltage to appliance start boiler check tightness of gas pipe and make gas valve calibration observing the figures given in the tables shown in the paragraph above refit the cover of the sealed chamber and the other parts of the boiler covering replace the gas identification plate showing new settings To con
38. sferred to ano ther system Read the instructions and warnings in this booklet and in the user manual carefully as they provide important directions for safe installation usage and maintenance This boiler is used to heat water at a temperature lower than boiling point at atmospheric pressure It must be connected to a heating system and or a domestic hot water system at the limits of its performance and its power Any other use of this boiler must be considered incorrect and therefore hazardous Installation maintenance and repair must be carried out by a CORGI Registered Installer and be in accordance with the relevant requirements of the current Gas Safety Installation and Use Regulations the Building Regulations Scotland Consolidation the Local Building Regulations the current 1 E E Wiring Regulations and the bye laws of the Local Water Undertaking Where no specific instruction is given refe rence should be made to the relevant BRISITH STAN DARDS CODES OF PRACTICE For Ireland install in accordance with IS 813 Installation of Gas Appliance B S Codes of Practice Standard Scope BS 6891 Gas Installation BS 5546 Installation of hot water supplies for domestic purposes Forced circulation hot water systems Installation of gas fired hot water boilers BS 5449 Part 1 BS 6798 BS 5440 Part1 Flues BS 5440 Part2 Ventilation BS 7074 Expansion vessels and ancillary equipment for sealed water systems
39. the wires to the probe and the boiler following the 3 wiring diagram on page 14 fig 9 1 3 9 2 SETTING HEATING CURVE When the external probe is used the electronic board calculates the boiler delivery temperature according to the outside temperature The ratio of these temperatures is summarised in the diagram in figure 9 2 1 Calculated flow temperature C Mean outside temperature C fig 9 2 1 value of slope of heating curve heating curve Factory set value of slope of heating curve 15 The most suitable curve should be chosen according to the design temperature and the type of building To set a new curve see parameters that can be set in paragraph above access parameter P5 set the preselected value store to set value in memory 9 3 ADJUSTING HEATING CURVE SET In order to adjust the heating curve parameter P6 is used In this mode the heating curve is shifted in parallel so as to change the delivery temperature cal culated see example in fig 9 2 2 To set the shift proceed as follows see parameters that can be set in paragraph above access parameter P6 set preselected value store set value in memory pag 20 Se a a Lan EE EE Ta EE D EE EE GE Calculated flow temperature C L naa e e eler ar e s 20 15 10 5 0 5 10 15 20 Mean outside temperature C KS fig 9 2 2 To make a f
40. to the boiler or system as a result of the use of incorrect antifreeze or additive substances 1 2 FEATURES OF UNDER FLOOR HEATING SYSTEMS A To prevent this problem it is necessary to use pipes with an oxygen proof barrier in accordance with standards DIN 4726 4729 In floor systems the use of plastic pipes without protection against penetration of oxygen through the walls can cause corrosion of the system s metal parts metal piping boiler etc the forma tion of oxides and bacterial agents If pipes of this kind are not used keep the system separa te by installing heat exchangers or those with a specific system water treatment In floor systems a system safety thermostat must A be installed to protect against overtemperature calibrated at around 45 C see wiring diagram on page 14 TRIANCO is not liable for damage caused to the unit or the system due to failure to comply with the above pag 4 1 3 SAFETY ADVICE If you smell gas do not operate electrical appliances extinguish any fires close the stopcock upstream of the meter open the windows and ventilate the room call your local authorised engineer Do not store or use flammable materials near the boiler Do not obstruct intake exhaust terminals To guarantee boiler efficiency and correct operation it is imperative to have yearly maintenance and combustion analysis every two years carried out by qualified engineers and to have the
41. tric pipe into the boiler flue off take and secu re in position with clamp 4 Fit 90 concentric bend into pipe and fit remaining compo nents as above BOILER OFF TAKE INNER SPIGOT 960mm SEAL BLACK Fig 1 IMPORTANT When installing the flue system it is important that the flue assembly inclines slightly up from the boiler This will allow any condensation formed to run back to the condense drain REAR OUTLET HORIZONTAL BALANCED FLUE 4000mm SEE NOTE 765mm 30 315mm 12 5 MIN 175 MIN MAX MIN WALL THICKNESS IS WITH KIT SUPPLIED EXTRA PIPES CAN BE PURCHASED TO EXTEND TO 4 MTRS HIGH LEVEL HORIZONTAL BALANCED FLUE 765mm 30 MAX 315mm 12 5 MIN 175 MIN 4000 mm m NN MAX MIN WALL THICKNESS AND HEIGHT IS WITH KIT SUPPLIED EXTRA PIPES CAN BE PURCHASED TO EXTEND TO 4 MTRS pag 10 R H SIDE OUTLET HORIZONTAL BALANCED FLUE 4000mm SEE NOTE 687mm 34 MAX 417mm 16 5 MIN 175 MIN MAX MIN WALL THICKNESS IS WITH KIT SUPPLIED EXTRA PIPES CAN BE PURCHASED TO EXTEND TO 4 MTRS HIGH LEVEL HORIZONTAL BALANCED FLUE 765mm 30 MAX 315mm 12 5 MIN 175 MIN 1095 MAX 4000 mm MAX MIN WALL THICKNESS AND HEIGHT IS WITH KIT SUPPLIED EXTRA PIPES CAN BE PURCHASED TO EXTEND TO 4 MTRS L H SIDE OUTLET HORIZONTAL BALANCED FLUE 4000mm SEE NOTE 650mm 25 5 MAX 437mm 17 MIN Note 500mm Extension pipe must be used for left hand side MAX MIN WA
42. urther adjustment of the heating curve use heating knob B With the knob in intermediate position the calculated ambient temperature is 20 C In relation to this position by rotating the knob a variation of 10 C in the calculated ambient temperature is produced see example in fig 9 2 3 eam e I I I I I p s Stee Calculated flow temperature C 20 20 15 10 5 0 5 10 15 20 Mean outside temperature C fig 9 2 3 10 COMBUSTION ANALYSIS THE BOILER IS ALREADY PRESET THIS INFOR MATION IS ONLY FOR CHECK ONLY In order to perform combustion analy sis a particular function must be activa Q E ted by means of the MAINTENANCE button When this is activated the three way valve switches towards the system CB models the boiler temperature limits are inhibited and the single maximum safety temperature 85 C remains activated if a second mixed zone is present the set value is 55 C In cases of floor radiant panel systems for CB models in order to feed the circuit with high temperature water it is necessary to discharge the heat in the domestic hot water circuit see below In the SP models heating only stop boiler operation when temperature exceeds 45 C and resume when system has cooled Preparations for performing analysis Remove screw V in figure plate and corresponding gasket in order to access the sock