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

Conventional flue and room sealed bf floor standing combination boiler for central heating and mains fed domestic hot water
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OIL HEATSLAVE
12/14 15/19 20/25 26/32
CONVENTIONAL FLUE AND ROOM SEALED BF FLOOR
STANDING COMBINATION BOILER FOR CENTRAL
HEATING AND MAINS FED DOMESTIC HOT WATER
INSTALLATION AND
SERVICING INSTRUCTIONS
Domestic Hot Water and Central Heating
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)
26/32 MINIMUM 26 kW (89,000 Btu/h)
THESE INSTRUCTIONS APPLY TO UK MODELS ONLY
THESE INSTRUCTIONS ARE TO BE LEFT WITH THE APPLIANCE
BOILER OUTPUT
MAXIMUM 14 kW (48,000 Btu/h)
MAXIMUM 19 kW (65,000 Btu/h)
MAXIMUM 25 kW (85,000 Btu/h)
MAXIMUM 32 kW (109,000 Btu/h)

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Summary of Contents for Worcester OIL HEATSLAVE 12/14

  • Page 1 OIL HEATSLAVE 12/14 15/19 20/25 26/32 CONVENTIONAL FLUE AND ROOM SEALED BF FLOOR STANDING COMBINATION BOILER FOR CENTRAL HEATING AND MAINS FED DOMESTIC HOT WATER INSTALLATION AND SERVICING INSTRUCTIONS BOILER OUTPUT Domestic 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)

  • Page 2: Table Of Contents

    Tables 3, 4 and 5. 2.6 A colour co-ordinated twin channel programmer can be fitted to the facia panel. This is available from Worcester Heat Systems as an optional extra. 2.7 Principle appliance components. See Fig 3, 4, 5 and 6.
  • Page 3 heat to the boiler. The burner can be set to the output duration of the warm up period. This will prevent the Heatslave requirements as detailed in Tables 2 to 6. tank taking priority for the tank warm up period of approximately 20 minutes.

  • Page 4: Technical Data

    3. Technical Data Table 1 SPECIFICATIONS Model 12/14 15/19 20/25 26/32 POWER SUPPLY 230V 50 Hz 230V 50 Hz 230V 50 Hz 230V 50 Hz IP RATING IP 20 IP 20 IP 20 IP 20 HEATING FLOW 22mm 22mm 22mm 28mm HEATING RETURN 1in.
  • Page 5 12/14 Table 2. Electro Oil Inter B9A Burner (See Fig. 23) NOMINAL BOILER RATING AT NORMAL OPERATING TEMPERATURE Appliance Pump Fuel Flow Flue Gas Approx. Pressure Rate Temp. Input Output Fuel Nozzle (p.s.i.) (°C)** Setting Kg/h Btu/hr Btu/hr 28 Sec. Kerosene 0.40 60°ES 1.11 1.41...

  • Page 6: Siting The Appliance

    Fig. 1. Pipework Dimensions. 168mm 152mm 112mm 1. Alternative central heating return tapping. 37mm 2. Central heating flow (22mm compression). 3. Mains cold water in (15mm compression). 4. Pressure relief discharge pipe. 5. Domestic hot water out (22mm copper). REAR VIEW Boiler packing at the corners where necessary.
  • Page 7 Fig.3. 12/14, 15/19 and 20/25 Conventional Flue Appliance (CF/LLD). Control Box Assembly Boiler high Split pin limit thermostat Central heating phial control thermostat phial Manual reset high limit thermostat Split pin phial Domestic hot water control thermostat phial Top panel Control box top cover Electrical control box Thermostat knob...
  • Page 8 Fig.4. 12/14, 15/19 and 20/25 Room Sealed Balanced Flue Appliance (RS). Control Box Assembly Boiler high Split pin limit thermostat Central heating phial control thermostat phial Manual reset high limit thermostat Split pin phial Domestic hot water control thermostat phial Top panel Rear air duct Control box top cover...
  • Page 9 Fig.5. 26/32 Conventional Flue Appliance (CF/LLD). Electrical Box Assembly Boiler high Split pin limit thermostat Central heating phial control thermostat phial Manual reset high limit thermostat Split pin phial Domestic hot water control thermostat phial Access cover locking screw Top panel 10 10 Electrical box top cover...
  • Page 10 Fig.6. 26/32 Room Sealed Balanced Flue Appliance Electrical Box Assembly Boiler high Split pin limit thermostat Central heating phial control thermostat phial Manual reset high limit thermostat Split pin phial Domestic hot water control thermostat phial Rear air duct Access cover locking access cover screw Top panel...

  • Page 11: Air Supply

    6. Air Supply 7. Flue System OPEN FLUE MODEL (CF/LLD) A flue system must be provided in accordance with BS5410: This includes conventional flue and standard low level and high Part 1 and with the current Building Regulations. level horizontal discharge kits. 7.1 Conventional Flue (CF).
  • Page 12 Fig. 9. 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 13 The flue pipe fits into the spigot and should be correctly sealed adjusted to achieve a flue draught within the specified range. 7.2 Low Level Discharge (LLD) with fire cement. See Fig 8. NOTE: The flue size must never be reduced from the take-off The conventional flue appliance may be converted to discharge diameter.
  • Page 14 5. If a terminal is fitted less than 2 metres above a surface to which people have access, fit a terminal guard as shown in Fig 11. A suitable guard is available from Worcester Heat Systems, Part number 7 716 190 009, or alternatively a proprietary terminal guard may be used provided it has the minimum dimensions shown in Fig 11.

  • Page 15: Oil Supply

    Fig. 12. Oil Pump. 8. Oil Supply A. Danfoss BFP 41. 1 INLET (See Figs. 12, 13 and 14). 2 RETURN Cartridge filter 8.1 Plastic or steel tanks should be installed to BS5410. 3 BLEED AND PRESSURE A steel tank should also conform to BS799: part 5 and be arranged GAUGE PORT with a slope of 1 in 24 away from the outlet valve with a sludge 4 VACUUM GAUGE PORT...
  • Page 16 TABLE 12 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 17: System Considerations

    Fig. 14. Oil Pipe Installation. (a) CF Bracket. (b) Single Pipe System. (c) Double Pipe System or Single Pipe Suction Lift with De-aerator. Open Turn fully grommet Isolating clockwise valve bleed to isolate Pipe support 10mm or 12mm 10mm bracket copper pipe copper pipe Turn fully...

  • Page 18: Sealed Primary System

    The primary water capacity given in Table 1 should be deducted 10. Sealed Primary System from the total system volume when calculating the volume for radiators, pipework etc. 10.7 The method of filling the appliance can be either method 1 See Figs.

  • Page 19: Open Vent Primary System

    Fig. 16. System filling and make-up. Make up vessel Heating return Auto Heating return air vent Non return Non return Non return valve valve valve Hose union Stop 300 mm (12 in) min. cock Stop cock above the highest point of the system. Test cock Fill point Temporary hose...

  • Page 20: Domestic Hot Water

    Water Company. maximum pressure of up to 10 bar (145 lb/in ). A pressure Further information may be obtained from Worcester Heat reducing valve must be fitted if the mains pressure exceeds 10 Systems Ltd.

  • Page 21: Electrical

    13.3 Mains Supply 13. Electrical Mains Supply-230V~ 50 Hz. External Fuse 5A to BS1362. Internal Fuse 3.15A (20 mm). Slow Blow. Refer to Figs. 18, 19, 20 and 21. LIVE-Brown, NEUTRAL-Blue, EARTH-Green/Yellow 13.1 The wiring between the appliance and the electrical supply Mains Cable: 0.75mm (24 x 0.20mm) to BS6500 Table 16.
  • Page 22 Fig. 19. Schematic Electrical Diagram. LOCKOUT POWER ON INDICATOR INDICATOR X9 (PIN 1) X11 (PIN 2) brown PUMP FROST THERMOSTAT X7 (PIN 1) (IF FITTED) X2 (PIN 4) RELAY 1 MOTORISED DIVERTER X2 (PIN 1) DIVERTER END VALVE (PIN 5) SWITCH black LIVE SUPPLY...
  • Page 23 (See Fig. 21a) A plug in, colour co-ordinated, 2 channel electronic programmer is available from Worcester Heat Systems. The programmer will give fully independent central heating (CH) and hot water (HW) programmes when the switch on the rear of the unit is set to P.

  • Page 24: Functional Flow Charts

    14. Functional Flow Chart...

  • Page 27: Installation

    15.4 Heating System Installation. 15. Installation Before the appliance is fitted to the heating system flush the system and mains water supply. 1. Plumb the boiler into the central heating system. 15.1 After unpacking the appliance it is recommended that all 2.

  • Page 28: Commissioning

    turned off rapidly. NOTE: This method may not be possible on some installations where a sub-gravity system used. Where the problem arises 4. See section 12 for further details. bleed the system using the oil pump as described in Section 16 15.6 Oil supply installation.
  • Page 29 Any extra vessel fitted must be pressurised to the same figure as b) Place an empty container to collect oil from the oil inlet pipe connection of the de-aerator. the integral vessel. If the expansion vessel fails then the specified replacement must be fitted.

  • Page 30: Users Instructions

    Heatslave tank. year. Set the Domestic Hot Water Control Thermostat to the minimum 17.4 Worcester Heat Systems Limited will be pleased to discuss setting and wait for the burner and pump to switch off. The and offer a comprehensive maintenance contract.
  • Page 31 (b) Remove the three remaining screws holding the front cover Electro Oil Sterling Burner plate in position and withdraw the cover to expose the fan (a) Remove the air adjustment cover. impeller. (b) Separate the main body of the burner from the burner front (c) Clean both sides of the fan impeller and remove any debris by removing the M5 allen screw (located beneath the air from the burner housing.
  • Page 32 Fig. 24. Electro Oil Inter B9B Burner. Locking screw (15/19 model). Combustion head Combustion Head Spark gap 2 mm 2-2.5 mm Photocell 10 mm Adjusting disc Transformer Draught tube Nozzle Nozzle block Dimension Pressure Output Head Type adjustment PL 6/7/21.5/10 3 mm screw Control box...
  • Page 33 Fig. 26. Electro Oil Sterling 40 Burner. Control Ignition Combustion head transformer Lockout Combustion Head reset button Spark gap 2.5 - 3.0mm Connecting pipe 7.5mm Solenoid valve Pressure gauge Motor Draught tube Nozzle Nozzle block port Pump Output Dimension Combustion Head Pressure Photocell Air adjustment...

  • Page 34: Replacement Of Parts

    9. Remove and clean the oil pump internal filter using kerosene or 5. Turn on the oil supply at the service cock. white spirit. The internal filter is accessed by removing the oil 6. Recommission the burner as described in Section 16. pump cover on the Danfoss BFP 11 and Suntec AS47C and by unscrewing and withdrawing the cartridge on the Danfoss BFP 41 6.
  • Page 35 Fig. 28. Flow Switch Assembly. Proximity switch Flow switch body Pipe – Flow switch to water-to-water heat Pipe – Domestic inlet exchanger assembly Filter Regulator compression fittings Fibre washer Flow restrictor body Withdraw the diverter valve and fit replacement in reverse order. 7.
  • Page 36 Remove the proximity switch connector plug at X6 on the Carefully withdraw the thermostat phial from the pocket. control board. Remove the heyco split bush and slide the copper capillary tube Remove the proximity switch Heyco bush from the control box through the slot, freeing the capillary tube from the electrical and withdraw the electrical lead.

  • Page 37: Short Parts List

    Fit a new control board in the reverse order. 14. Operating Switch Unplug the programmer from the control board and carefully Check that the electricity supply has been turned off. remove the facia from the cabinet assembly. Remove the appliance front, top panel and the control box top Remove the four pozi-drive screws holding the programmer to cover.

  • Page 38: Fault Finding

    21. Fault Finding...
  • Page 40 Worcester Heat Systems Limited, Cotswold Way, Warndon, Worcester WR4 9SW. Telephone: (01905) 754624 Fax: (01905) 754619 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:

Oil heatslave 15/19Oil heatslave 20/25Oil heatslave 26/32

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