Bosch 14/19CBI manual

9 / 14CBi, 14 / 19CBi, 19 / 24CBi W ALL M OUNTED BOILERS FOR CENTRAL HEA TING AND INDIRECT SUPPL Y OF DO MESTIC HO T W A TER INS T ALL A TION AND SERVICING INS TRUCTIONS This appliance is for use with Natur al Gas or LPG (Cat II 2H3P). 9/14CBi GC NUMBER 41 311 50 (N.G.) 9/14CBi GC NUMBER 41 311 51 (LPG) 14/19CBi GC NUMBER 41 311 52 (N.G.) 14/19CBi [...]

1.1 Gas Safety (Installation & Use) R egulations 1998. It is the law that all gas appliances ar e installed by a competent per son in accordance with the abo ve r egulations. Failure t o install appliances corr ectly could lead to prosecution. It is in your inter est, and that of safety , to ensur e compliance with the law . 1.2 The manufactur [...]

working at a gauge pr essure of at least 0.35bar abov e the relief valv e setting if on a sealed system. Where a st orage system will not ha ve a v ent to atmosphere the installation must comply with Building R egulations and W ater Company b ye-law s. If connecting to an existing sy stem the local authority should be informed. 2.7 Flue There ar e [...]

The data plate is fixed t o the inner casing cover . 4 3. T echnical Da ta HYDRA ULIC RESIST ANCE BOILER OUTPUT RESIST ANCE MIN. FLO W RA TE kW Metr es L/min. °C 0.06 6.5 20 0.13 1 1.7 1 1 14.0 0.28 18.2 1 1 T able 3 9/14CBi FLUE DET AILS HORIZONT AL FLUE mm W ALL HOLE DIAMETER EXTERNAL FIX 1 1 0 INTERNAL FIX 150 MINIMUM LENGTH 425 MAXIMUM LENGTH [...]

5 GAS SUPPL Y SYSTEM - BASED ON NG (G20) T OT AL LENGTH OF GAS SUPPL Y PIPE (COPPER) metres 3 6 9 12 MAXIMUM GAS DISCHARGE RA TE - PRESSURE DROP 1mbar . m 3 /h PIPE DIAMETER mm 8.7 5.8 4.6 3.9 22 18.0 12.0 9.4 8.0 28 T able 6 CLEARANCES (mm) INST ALLA TION SER VICE ABO VE APPLIANCE - INTERNAL REAR FLUE 30 30 ABO VE APPLIANCE - EXTERNAL FLUE TURRET [...]

The appliance may be inst alled in any room subject t o the requir ements of the current IEE regulations and, in Scotland, the rele vant electrical pro visions of the Building R egulations with respect t o the installation of appliances in rooms cont aining baths or shower s. If the appliance is installed in a r oom containing a bath or shower , an[...]

The flue system must be inst alled following the requir ements of BS5440:1. The standar d flue kit length is 425 - 725mm. Extension kits for flues up to 3.0m ar e available. A rear flue suit able for walls fr om 220 - 375mm thick is av ailable which can be contained within the boiler casing. The terminal must not cause an obstruction nor the combus[...]

The system must comply with r equirements of BS6798 and BS5449. General: The appliance is only suitable f or connection to indirect fully pumped sealed and open vent sy stems. The minimum static head is 1.2m and the maximum is 30m. The pump MUST be wired t o the boiler control to ensur e that the pump-ov errun function operates to pr ev ent the ris[...]

Heating return Non return valve Non return valve Hose union T est cock T emporary hose Stop cock Auto air vent Heating return Stop cock Fill point Non return valve Make up vessel 1200mm (48 in) above the highest point of the system. 9 Note: A drain cock should be fitted at the lowest point of the heating cir cuit and beneath the appliance Fig. 7. F[...]

The gas supplier must be contacted t o check the suitability of the appliance for the local gas supply conditions bef ore connecting the appliance. The 19/24CBi appliance requir es a maximum of 2.72 m 3 /h of natural gas (G20), 1.05 m 3 /h pr opane (G31). The 14/19CBi appliance requir es a maximum of 2.18 m 3 /h of natural gas (G20), 0.84 m 3 /h pr[...]

11 Fig.10. Boiler wiring diagram Flame Sense Electrode Spark Electrode Gas V alv e Air pressur e switch Overheat Thermostat Fan Control Boar d X1 X2 X3 X4 X5 X6 1 orange 1 1 X7 User control potentiometer/switch black white brown grey violet red violet red black orange brown grey white NC NO COM T emperature sensor Pump Live Pump Neutral P ermanent [...]

12 Fig.11 . Sy stem wiring diagram Control Boar d X1 Pump L Pump N P ermanent N P ermanent L Switched L (Boiler Demand) Earth post Cable clamp OUT SIDE OF BOILER INSIDE OF BOILER System wiring centre T erminal strip Boiler/pump demand from system wiring centre L switched Pump not to be connected to system wiring centre Pump (supplied from boiler on[...]

13 Fig. 12a. Boiler Assembly 9/14CBi Shown set for R ear Only flue kit 1. Inner case 2. J bolts and wing nuts (2) 3. Combustion chamber cov er 4. Burner 5. Burner fixing screw 6. Control knob 7. Indicator lights 8. Base/controls fixing scr ew 9. Cabinet fixing screw 1 0. Gas valve 1 1. Spark electrode 12. Burner injector 13. T emperature sensor 14.[...]

14 1. Inner case 2. J bolts and wing nuts (2) 3. Combustion chamber cov er 4. Burner 5. Burner fixing screw 6. Control knob 7. Indicator lights 8. Base/controls fixing scr ew 9. Cabinet fixing screw 1 0. Gas valve 1 1. Spark electrode 12. Burner injector 13. T emperature sensor 14. Overheat thermost at 15. Air pressur e switch 16. Flow pipe 17. R e[...]

NO TE: READ THIS SECTION FULL Y BEFORE COMMENCING THE INST ALLA TION T o install a boiler with a rear only flue r efer to Section 1 1.1. T o install a boiler with a telescopic horizontal flue kit r efer to Section 1 1.2. T o install a boiler with a vertical flue r efer to Section 1 1.2. and the literatur e with the flue kit. 11. Installation of the[...]

16 11.1.5 Boiler Prepar ation (i) R emove the appliance casing b y releasing the scr ew at the centre base. Disconnect the earth connection at the base and lift off. (ii) R elease the four screw s and remo ve the inner casing cov er . (iii) R elease the two wing-nuts and remo ve the combustion chamber front panel. The co ver is located into not che[...]

17 1 1. Flue hood 2. Fan 3. Sensing connection ( + ) 4. Sensing connection (—) 5. T op outlet sealing plate 6. Fan lead clip 7. Fan fixing scr ews (2) 8. Pressur e tube junction 9. — ve pr essure tube 1 0. + ve pressur e tube 1 1. — ve pressure tube extension 12. + ve pr essure tube extension 2 3 (+) (red tube) 4 ( — ) (clear tube) 5 7 Fig.[...]

11.1.8 Completion of the Installation Check that all the gas and water connections ha ve been tightened. L ower the base plate/control panel. R efer to Fig. 17. The permanent mains and switched liv e supply to the boiler must come from the sy stem junction box. R efer to Fig.1 1. A 4 core cable is r ecommended. F eed the 4 core cable and the pump c[...]

11.2.5 Flue Prepar ation (i) Drill the hole for the flue at Ø1 1 0mm unless the optional internal fitting kit (WHS part No. 7 7 16 191 0 19) is used in which case a Ø150mm hole is requir ed. (ii) Fix the wall mounting plate ont o the wall. Ensure it is le vel befor e tightening the screws. (iii) The method of installation of the flue sy stem may [...]

11.2.6 T elescopic Horizontal Flue Kit up to 750mm in Length (i) The standar d flue can be telescopically adjusted to an y length between 425mm and 725mm. It will only be necessary to cut the st andard assembly if L<425mm. Cut the flue turret assembly and the terminal assembly by the same amount i.e L=350 - r emove 75mm from each assembly . The [...]

11.2.9 V ertical A daptor for Horizont al Flues An adapter is av ailable for an initial short section of vertical flue. R efer to Fig. 25. Measur e and cut the flue as described in Section 1 1.2.7. The fir st, vertical, section (equivalent t o dimension X) is measured fr om the top of the boiler casing. Cut the vertical section of the extension duc[...]

11.2.12 Installation of Flue ont o Boiler (i ) Fit the clamping ring around the flue spigot but leav e loose. From the inside push the assembly thr ough the wall. Align the flue turret and push fully ont o the spigot on the appliance. (ii) Slide the clamping ring into position so that the hole in the spigot lines up with the hole in the ring. Tight[...]

Cleansing and Inhibiting a Central Heating Installation in compliance with Benchmark It is accepted good practice in compliance with BS 7593, P as 33 and Benchmark, to cleanse both an existing centr al heating system when fitting a replacement boiler , and when fitting a new central heating system. Then tr eat with a 'Corrosion Protect or . &a[...]

12.8 Central Heating Check that the external controls ar e calling for heat to the heating cir cuit. Check that all the radiat ors heat up e venly . If necessary carefully vent. 12.9 Balance the system t o give the correct temper ature differential. R efer to T able 3. Refer t o Section 7. for bypass requir ements. 12.10 Set the room thermost at to[...]

F a n - Horizontal Flue. R emov e the combustion chamber cov er . Carefully pull off the electrical connections and the tubes from the air flow detect or . L oosen the two clamps to remo ve the fan . R efer to Fig 34. Flue Hood - Horizontal Flue. Remo ve the fan, see abov e. Remo ve the combustion chamber co ver and withdra w the hood. When refitti[...]

Important: T urn off the gas and electricity supplies and drain, where necessary , before r eplacing any components. 15.1 Alwa ys check for gas soundness wher e rele vant and carry out functional checks as described in Section 12 Commissioning. Any O-ring, gask et or seal that appears damaged must be replaced. 15.2 Component A ccess R efer to Secti[...]

27 Fig. 34 . Inner Casing - Gas and Electric Controls. 9/14CBi shown. 2 3 1 1. Inner casing 2. J bolts and wing nuts (2) 3. Combustion chamber cov er 4. Burner assembly 5. Inner case cov er fixing points (4) 6. Base/control fixing point 7. Gas valv e 8. Burner manifold fixing screw s (4 + 4) 9. Burner manifold 1 0. Drain point (top flow r eturn) 1 [...]

15.4.1 Gas V alve NO TE: If the left hand clearance is >50mm then the gas valv e can be replaced with the burner and combustion chamber co ver in place by unscr ewing the four extended screw s at the manifold on the outside of the inner casing. The manifold gask et should be replaced if it is damaged or has deterior ated. Check that the gas supp[...]

15.4.5 Control Boar d L ower the base plate/control assembly and car efully disconnect the plug-in connector and all the electrical connections. R efer to Fig. 35. R elease the five clips and lift out the control boar d. Refer t o Fig. 35. Pull out and replace, if necessary , a failed fuse. 15.4.6 Fan R emove the inner casing and combustion chamber[...]

15.4.7 Air Flow Sensor R emove the f an as described in 14.3. Unscrew and withdr aw , through the f an outlet, the air flow sensor . R efer to Fig .38 and 38a. The detector is 'handed' - do not f orce it int o place. 15.4.8 T emperature Sensor R emove the access panel t o give impr oved access with minimum side clearance. Carefully pull-o[...]

15.4.11 Combustion Chamber Insulation The insulation pads are manuf actured from a material in accor dance with COSHH. R emove the casing, inner casing co ver and combustion chamber cove r . Front Insulation: Unscr ew the clamp at the top of the combustion chamber cov er to replace insulation. Side Insulation: R elease the clip at the bottom and sl[...]

These instructions should only be read if conv erting appliance from Natur al Gas to LPG or vice ver sa. Only components supplied by W orcester , Bosch Group should be used. Only competent per sons should attempt the conver sion. Conv ersion from Natur al Gas to LPG should not be carried out on appliances installed in a r oom or internal space belo[...]

1 E60-473 Burner Assembly NG 9/14CBi 1 8 7 1 6 12 1 773 0 Burner Assembly LPG 9/14CBi 1 8 7 1 6 1 0 3 2 1 0 0 2 E60-474 Burner Assembly NG 14/19, 19/24CBi 1 8 7 1 6 12 1 767 0 Burner Assembly LPG 14/19, 19/24CBi 1 8 7 16 1 0 3 2 1 1 0 3 E60-475 Injector Burner 3.4mm NG 9/14CBi 1 8 7 1 6 157 1 16 0 Injector Burner 2.1mm LPG 9/14CBi 1 8 7 16 1 0 2 40[...]

34 18. Opera tional Flow Diagr am Mains 230V supply BOILER HEA T DEMAND Pump continues for 4 minutes DEMAND OFF Boiler demand from sy stem junction box AND User control knob ON Run fan 20 seconds or wait fo r the end of the fan o verrun Boiler demand light on Pump supply on Ignition sequence Boiler cy cles to satisfy temperatur e set b y facia cont[...]

35 19. F ault Finding NO TE : This fault finding information is f or guidance only . W or cester , Bosch Group cannot be held r esponsible for costs incurred b y per sons not deemed to be competent. The electronic contr ol for this boiler incorporates thr ee lights: Boiler demand, flame on and lock out. These form the basis f or this fault finding [...]

36 R emov e connector X5 and test resist ance between the red and violet cables. Is the resist ance between 1 k ohm and 30 k ohm? F AIL POINT A No Ye s NO TE: It is normal to see only a demand light if the boiler is hot and the burner has temporarily shut off. Ensure boiler is cool and user control set t o maximum. R eplace sensor or check cables t[...]

F AIL POINT C Is the boiler in a very cold environment i.e is the primary water temperatur e below 5°C? Boiler is running in 'A utofr oststat' mode. Ye s Demand light has failed. R eplace control boar d if it is considered a pr oblem. No F AIL POINT D Is the system fully water pr essurised and is all air vented? The system should ha ve a[...]

F AIL POINT E 'BURNER LOCK OUT' Is the gas supply connected and at the correct pr essure? R emov e boiler casing. R eset and rest art the boiler . Can a flame be seen through the spyglass? Note: there is a 20 second delay fr om fan on to spark. Ye s No R ectify gas supply problem. No TURN OFF GAS SUPPL Y . R emov e inner casing cov er . R[...]

39 F AIL POINT F Deliver ed primary water temperatur e alwa ys t oo hot. (Over 85°C) Deliver ed primary water temperatur e appear s too low with control knob set t o maximum. (L ess than 75°C) Such a fault is lik ely to be caused by one or mor e of the following: L ow gas pressur e Partially block ed flue Partially block ed heat exchanger Blocked[...]

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CONTROLS T o comply with the Building Regulations, each section must have a tick in one or other of the boxes TIME & TEMPERA TURE CONTROL TO H EA TING ROOM T/ST A T & PROGRAMMER/TIMER PROGRAMMABLE ROOMSTA T TIME & TEMPERA TURE CONTROL TO H O T W A TER CYLINDER T/ST A T & PROGRAMMER/TIMER COMBI BOILER H E A TING ZONE V A L V E S FITT[...]

SERVICE INTERVAL RECORD It is recommended that your heating system is serviced regularly and that you complete the appropriate Service Interval Record Below . Service Provider. Before completing the appropriate Service Interval Record below , please ensure you have carried out the service as described in the boiler manufacturer  s i n s t r u c [...]

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This booklet is accurate at the date of printing but will be super seded and should be disregar ded if specifications and/or appearances ar e changed in the interests of continued impro vement. All goods sold are subject t o our official Conditions of Sale, a copy of which may be obt ained on application. PUBLICA TION 8 716 115 015a (02/08) This ma[...]