Worcester 12/14 Installation And Servicing Instructions
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Worcester 12/14 Installation And Servicing Instructions

Worcester 12/14 Installation And Servicing Instructions

Conventional flue and room sealed bf; floor standing oil-fired pressure jet appliances
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DANESMOOR
SYSTEM BOILER
CONVENTIONAL FLUE AND ROOM SEALED BF
FLOOR STANDING OIL-FIRED PRESSURE JET APPLIANCES
INSTALLATION AND
SERVICING INSTRUCTIONS
12/14 MINIMUM 12 kW (41,000 Btu/h)
15/19 MINIMUM 15 kW (51,000 Btu/h)
20/25 MINIMUM 20 kW (68,000 Btu/h)
THESE INSTRUCTIONS APPLY TO UK MODELS ONLY
THESE INSTRUCTIONS ARE TO BE LEFT WITH THE APPLIANCE
BOILER OUTPUT
Hot Water and Central Heating
MAXIMUM 14 kW (48,000 Btu/h)
MAXIMUM 19 kW (65,000 Btu/h)
MAXIMUM 25 kW (85,000 Btu/h)

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  • Page 1 FLOOR STANDING OIL-FIRED PRESSURE JET APPLIANCES INSTALLATION AND SERVICING INSTRUCTIONS BOILER OUTPUT Hot Water and Central Heating 12/14 MINIMUM 12 kW (41,000 Btu/h) MAXIMUM 14 kW (48,000 Btu/h) 15/19 MINIMUM 15 kW (51,000 Btu/h) MAXIMUM 19 kW (65,000 Btu/h) 20/25 MINIMUM 20 kW (68,000 Btu/h)

  • Page 2: Table Of Contents

    Tables 3 and 4. 2.6 A colour coordinated twin channel programmer can be fitted to the appliance facia panel. This is available from Worcester Heat Systems as an optional extra. 2.7 Principle appliance components. See Figs. 2 and 3.

  • Page 3: Technical Data

    2.8 Operation The appliance is supplied with a facia mounted operating switch 3. Technical Data Table 1 SPECIFICATIONS Model 12/14 15/19 20/25 POWER SUPPLY 230V 50 Hz 230V 50 Hz 230V 50 Hz...
  • Page 4 2. Central heating return (1" BSP). 3. Gravity feed flow/optional air vent point (1" BSP). 4. Pressure relief discharge pipe (15mm compression). 12/14 Table 2. Electro Oil Inter B9A Burner (See Fig. 21) NOMINAL BOILER RATING AT NORMAL OPERATING TEMPERATURE...

  • Page 5: Siting The Appliance

    APPLIANCE underside of the control box. The thermostat phials should be carefully removed from the phial pocket and the control box placed in a safe place taking care not to kink the thermostat 12/14 capillary tubes. 15/19 16.5 5.5 On the RS balanced flue model, remove the burner box 20/25 21.5...
  • Page 6 Fig. 2. Conventional Flue Appliance. (CF/LLD) Control Box Assembly Manual reset over- heat thermostat phial Split pin Automatic reset high limit thermostat phial Control thermostat phial Manual air vent Fire valve clip Electrical Top panel top cover Manual reset overheat Central heating thermostat flow...
  • Page 7 Fig. 3. Room sealed balanced flue appliance (RS). Control Box Assembly Manual reset over- heat thermostat phial Split pin Automatic reset high limit thermostat phial Control thermostat phial Manual air vent Rear air duct access cover Electrical Top panel top cover Rear air duct Manual reset overheat...

  • Page 8: Flue System

    Fig. 8. and 135 degree bends should be used. A suitable guard is available from Worcester Heat Systems, Part All brick and masonry chimneys should be lined with a suitable non-com-...
  • Page 9 Fig. 6. Room Sealed Balanced Flue Terminal Installation. X = 180 mm Maximum (a) Rear Discharge 4" to 7" Single Skin Wall. For use with non-standard/single skin walls up to 182.mm thick. Where noise emission from the flue terminal is likely to be of concern, it is recommended that the standard 12 in.
  • Page 10 Fig. 8. Terminal guard Minimum dimensions. Terminal guard. See 7.4.5. Fig. 7. Flue terminating positions for oil-fired appliances NOTE: The dimensions given are for general guidance only. Other surrounding buildings or objects may affect the clearance of combustion products. An alternative flue terminal position should be sought when there is any possibility of a nuisance being caused by inadequate dispersal of flue products.

  • Page 11: Oil Supply

    Fig. 9. Oil Pump. 8. Oil Supply A. Danfoss BFP 41. 1 INLET (See Figs. 9, 10 and 11). 2 RETURN Cartridge filter 8.1 Plastic or steel tanks should be installed to BS5410. 3 BLEED AND PRESSURE GAUGE PORT A steel tank should also conform to BS799: part 5 and be arranged with a slope of 1 in 24 away from the outlet valve with a sludge 4 VACUUM GAUGE PORT cock at its lower end.
  • Page 12 TABLE 10 Single Pipe Suction Lift with De-aerator MAXIMUM ALLOWABLE PIPE RUN FROM TANK TO DE-AERATOR (metres) Fuel Flowrate 2.5 (kg/h) 5.0 (kg/h) 10.0 (kg/h) 10.0 (kg/h) HEAD 6 mm inside dia. pipe 8 mm inside dia. pipe (metres) (8 mm O.D. copper) (10 mm O.D.

  • Page 13: Heating And Hot Water System

    Fig. 11. Oil Pipe Installation. (c) Double Pipe System or (a) CF Bracket. (b) Single Pipe System. Single Pipe Suction Lift with De-aerator. 10mm or 12mm 10mm 10mm copper pipe copper pipe copper pipe bleed Turn fully clockwise Pipe support to isolate Open bracket...
  • Page 14 Fig. 12. Sealed Primary System. Heating Flow (22 mm) Pressure Relief Valve Pump Expansion Vessel Heating Return (22 mm) Automatic by-pass valve to be fitted when thermostatic valves are fitted on all radiators Fig. 13. System filling and make-up. Make up vessel Heating return Auto...

  • Page 15: Electrical

    2. Remove the cabinet top panel by snatching squarely A plug in, colour co-ordinated, 2 channel electronic programmer upwards. is available from Worcester Heat Systems Limited. Full 3. Release the four screws securing the cover of the instructions covering installation and operation of the electrical control box and remove.
  • Page 16 Note: The mains supply cable should not be connected to an box. Connect terminal 2 from the boiler terminal block to the external time switch when a frost thermostat or low-level 'HEATING ON' on the remote 10 way junction box. discharge post purge unit is fitted to the Danesmoor standard NOTE: A “Y”...
  • Page 17 Neutral Permanent Live Pump (supplied in boiler) Switched Live 7 8 9 10 11 12 13 14 15 L N E E 2 3 4 5 6 NOTE: Optional Worcester Programmer is available (see Section 10.6). Operating Switch Boiler socket...
  • Page 18 E N L 7 8 9 1112 13 14 15 L N E E N 1 2 3 4 5 6 Hot Water Valve Honeywell V4043H Cylinder Thermostat Optional Worcester HEAT SYSTEMS Programmer TWICE TWICE HEATING WATER ONCE ONCE ADVANCE...

  • Page 19: Installation

    7. Feed the pipe through the retaining clip, allowing approximately 11. Installation 80 mm of pipe to project beyond the clip, and tighten the retaining screw. Take care not to overtighten the screw! 8. Hold the pipe at the retaining clip and gently pull the pipe 11.1 After unpackaging the appliance it is recommended that all forward sufficiently to allow a compression to 1/4 inch BSP female cabinet panels are removed, as described in Section 5, and stored in...

  • Page 20: Commissioning

    insert the burner into the housing tube. Push the burner firmly for- 12. Commissioning the Appliance ward to compress the gasket and tighten the two locking screws using a 5mm Allen key. Note: It is important that a good seal is made between the burner Ensure that no foreign matter is left in the system as this could and the boiler to prevent re-circulation of the flue gases from the cause damage to the appliance.
  • Page 21 Fig. 20. Electro Oil Inter B9A Burner. Locking screw Combustion head (12/14 model) Combustion Head Photocell Spark gap 2.0-2.5 mm 10mm...
  • Page 22 Fig. 21. Electro Oil Inter B9B Burner. Locking screw Combustion head (15/19 model) Combustion Head Spark gap 2 mm 2-2.5 mm Photocell 10 mm Adjusting disc Transformer Draught tube Nozzle Nozzle block Pressure Adjustment Output Dimension Screw Head Type Control box PL 6/7/21.5/10 3 mm PL 6/7/21.5/10...

  • Page 23: Instructions To The User

    1. Remove the burner. Worcester Heat Systems Limited will be pleased to discuss and (a) Isolate the oil supply at both the oil tank and the isolating valve offer a comprehensive maintenance contract.
  • Page 24 (c) Clean both sides of the fan impeller and remove any debris clean in Kerosene or white spirit and re-assemble into the filter. from the burner housing. 14.5 Clean the air ducts. (RS balanced flue model only). (d) Check that the impeller rotates freely. 1.

  • Page 25: Fault Finding

    15. Fault Finding LOCKOUT INDICATED BY RED LAMP ON CONTROL BOX To Re-set wait 2 minutes and press re-set button Ignition failure No oil delivery Air adjustment fault. Flame detection fault. Burner motor fails Intermittent Pulsation from nozzle. should be to operate.

  • Page 26: Short Parts List

    16. Short Parts List Part Manufacturers Reference WHS Part No. Burner for 12/14 Bentone B9A 8 716 104 431 0 B9A Combustion Head PL 6/7/21.5/10-E x 78mm 8 716 157 041 0 Burner for 15/19 Bentone B9B 8 716 142 705 0 B9B combustion Head PL 6/7/21.5/10 x 78mm...
  • Page 28 Worcester Heat Systems Limited (Bosch Group), Cotswold Way, Warndon, Worcester WR4 9SW. Telephone: (01905) 754624 Fax: (01905) 754619 Technical Helpline 08705 266241. www.worcester-bosch.co.uk This booklet is accurate at the date of printing but will be superseded and should be disregarded if specifications and/or appearances are changed in the interests of continued improvement.

This manual is also suitable for:

15/1920/25

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