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Ravenheat Little Star LS 80 Installation And Servicing Instructions
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Ravenheat Little Star LS 80 Installation And Servicing Instructions

Fanned combination boiler
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ELECTRONIC IGNITION - AUTOMATIC MODULATING BOILER
W I T H O U T T I M E R
o
LS 80 G.C. N
4758129 (NAT.) - 4758131 (LPG)
o
LS 100 G.C. N
4758133 (NAT.) - 4758135 (LPG)
NATURAL GAS (G20) -I
LPG (G30 - G31) - I
Listed by The United Kingdom Water
Fitting Byelaws Scheme
WITH TIMER
o
LS 80T G.C. N
4758130 (NAT.) - 4758132 (LPG)
o
LS 1OOT G.C. N
4758134 (NAT.) - 4758136 (LPG)
NATURAL GAS (G20) - I
LPG (G30 - G31) - I

INSTALLATION AND SERVICING INSTRUCTIONS

Technical and illustrative data are not binding and can be modified without prior notice.
The descriptions and illustrations in the present booklet are for guideline purposes only.
RAVENHEAT MANUFACTURING LTD., CHARTISTS WAY, MORLEY, LEEDS, LS27 9ET. -TELEPHONE (0113) 252 7007
Supplied By www.heating spares.co Tel. 0161 620 6677
II
2H -
2H3+
II
3+-
2H3+
II
2H
2H3+
-
II
3+-
2H3+
TO BE LEFT WITH USER
Fanned Combination Boiler

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Summary of Contents for Ravenheat Little Star LS 80

  • Page 1: Installation And Servicing Instructions

    Technical and illustrative data are not binding and can be modified without prior notice. The descriptions and illustrations in the present booklet are for guideline purposes only. RAVENHEAT MANUFACTURING LTD., CHARTISTS WAY, MORLEY, LEEDS, LS27 9ET. -TELEPHONE (0113) 252 7007 Supplied By www.heating spares.co Tel. 0161 620 6677...

  • Page 2: Heat Exchanger

    When servicing avoid inhalation by using a vacuum cleaner or in conjunction with other tools, After handling wash hands and other exposed parts, RAVENHEAT use only high quality material for production of this product, in an effort to protect the environment components should be re-cycled,...

  • Page 3: Table Of Contents

    TABLE OF CONTENTS SECTIONS: PAGE: INTRODUCTION DESIGN PRINCIPLES AND OPERATING SEQUENCE TECHNICAL DATA 8 - 9 - 1 0 GENERAL REQUIREMENTS INSTALLATION COMMISSIONING SERVICING INSTRUCTIONS FAULT FINDING ELECTRICAL SYSTEM DIAGRAM EXPLODED PARTS DIAGRAM LIST OF SPARE PARTS GENERAL LAYOUT Fig. 1 1 - Heat exchanger 16 - Hot water control 30 - Water pressure gauge...

  • Page 4: Burner

    OPERATING SCHEME Fig. 2 24 -Three way valve 1 - Heat exchanger 10 - Straight header 2 - Heat exchanger for D.H.W. water 12 - Modulating gas valve 26 - Auto air vent valve 3 - Burner 15 - Heating control potentiometer 28 - Pressure switch 4 - Ignition electrode 29 - Circulating pump...

  • Page 5: Ignition Board

    INTRODUCTION 2.2.6 Central heating mode SECTION 1 Ravenheat boiler is for the use of cen- If the switch is positioned on winter with a 2.2.7 tral and domestic hot water combined in demand for heat to supply radiators, etc. one unit.
  • Page 6 2.4.4 Domestic hot water mode, When D.H.W. is no longer called for the boil- er automatically returns to the central heat- 2.4.1 The heat exchanger in the D.H.W. circuit is ing mode. a stainless steel plate heat exchanger water 2.4.5 Switch la Fig.
  • Page 7 TECHNICAL DATA SECTION 3 NATURAL GAS (G 20) I TABLE 1 26.1 kW NOMINAL HEAT INPUT NET QMS 13.5 kW MINIMUM HEAT INPUT NET 24.1 kW NOMINAL HEAT OUTPUT 11.6 kW MINIMUM HEAT OUTPUT 2.6 m GAS RATE 1.3 m AFTER 10 MINUTES INLET PRESSURE 20 mbar...
  • Page 8 3 TECHNICAL DATA SECTION LPG (G 30 - G 31) I TABLE 1/A 26.1 kW NOMINAL HEAT INPUT NET QMS 13.5 kW MINIMUM HEAT INPUT NET 24.1 kW NOMINAL HEAT OUTPUT 11.6 kW MINIMUM HEAT OUTPUT 0.95 m 0.79 m G 30 RATE 0.5 m...
  • Page 9 3 TECHNICAL DATA SECTION LS 100 (T) TABLE 3 - II NATURAL GAS (G 20) I 2H3+ NOMINAL HEAT INPUT NET QMS 31.4 kW MINIMUM HEAT INPUT NET 13.0 kW NOMINAL HEAT OUTPUT 29.0 kW MINIMUM HEAT OUTPUT 11.2 kW GAS RATE 3.2 m AFTER 10 MINUTES...
  • Page 10 3 TECHNICAL DATA SECTION LS 100 (T) TABLE 4 LPG (G 30 - G 31) II 2H3+ NOMINAL HEAT INPUT NET QMS 31.4 kW MINIMUM HEAT lNPUT NET 13.0 kW NOMINAL HEAT OUTPUT 29.0 kW GAS RATE G 31 1.24 m G 30 0.95 m 0.53 m...
  • Page 11 CODES OF PRACTICE/Ref: Documents The Ravenheat LS 80 (T) and LS 100 (T) Combi Boiler must be fitted on a flat and ver- Detailed recommendations are contained in tical wall capable of adequately supporting...

  • Page 12: Frame

    IMPORTANT NOTICE other appliances when they are in use at the same time. 4.4.1 If the combination boiler iS to be fitted in a FLUE SYSTEM timber framed building it should be fitted in accordance with the British Gas Publication Guide for Gas Installations in Timber Frame The terminal should be located where dis- 4.6.1...
  • Page 13 WATER CIRCULATION (central heating) Detailed recommendations are given in BS 4.8.1 6798:1987/5449:1990 (for. smallbore and microbore central heating systems). The fol- lowing notes are given for general guidance. 4.8.2 Pipework Copper tubing to BS 2871 1.1.1971 is rec- ommended for water pipes. Jointing should be either with capillary soldered or with compression fittings.
  • Page 14 4.8.4 Draining tap Fig. 7 These must be located in. accessible posi- tions to permit the draining of the whole system. The taps must be at least 15 mm nominal size and manufactured in accor- dance with BS 2870 1980 4.8.5 A i r r e l e a s e...
  • Page 15 SIZING OF ADDITIONAL EXPANSION VESSELS: TABLE 3 Deduct from the value given in the table the 7 litre vessel supplied. Note: This pressure can be increased up to 1.5 bar to suit static head situations, see item 10, other appliance instructions in the SERVICING INSTRUCTIONS It is most important that the correct concen- B) Where fitting a make up vessel would be...
  • Page 16 Regulations and local regulations which 59 - Flue bend (Fig. 10) item 9 apply. 60 -Air intake duct The Ravenheat boiler is supplied for con- 61 - Flue exhaust duct nection to a 230 V - 50 Hz single phase 62 -Terminal supply.
  • Page 17 POSITIONING OF THE BOILER 5.4.1 Unscrew the 2 screws that fasten the lower grating on the casing and remove it the casing (Fig. 20). Remove the 4 screws that secure in the 5.4.2 top, 2 in the bottom the casing (Fig. 19). - Carefully slide the casing forward to lift off.

  • Page 18: Supplied By Www.heating Spares.co Tel. 0161 620 6677

    INSTALLINGTHE APPLIANCE FOR REAR FLUE OUTLET 5.5.1 Use adhesive tape to attach the template to the wall, making sure that the centre line is vertical. - Mark the two boiler fastening holes on the wall as well as the centre of the flue d u c t .
  • Page 19 5.5.3 If the standard duct furnished with the boil- er is too long it can be shortened. Note: Should it be necessary to cut the flue, always cut equal amounts from both inner and outer pipes. Always cut the end furthest from the terminal.
  • Page 20 NOTE: a suitable support bracket is availa- ble from Ravenheat Manufacturing and should be used to support flue length at least every 1.8 metre preferably at each joint this bracket should be rigidly secured to wall and flue duct.
  • Page 21 Fig. 37 -Screw in the two upper coach bolts leav- ing them about 10 mm out from the wall in order to enable the boiler to be locat- 5.7.2 Positioning the elbow towards the required direction (Fig. 30). 5.7.5 If the standard duct furnished with the boiler is too long it can be shortened.
  • Page 22 5.7.6 Insert the flue assembly into the wall, mak- 5.7.12.1 VERTICAL FLUE OPTIONS ing sure it will not interfere when fixing the boiler on the wall. The vertical flue kit intended for use where a horizontal flue outlet is not Possi- 5.7.7 Lift the boiler on the wall.
  • Page 23 1,200 M horizontally from a vertical terminal to a wall 300 Before proceeding with installation check the con- tents of the RAVENHEAT VERTICAL FLUE KIT, comprising of the following pieces: - 1 RAVENHEAT VERTICAL FLUE complete with terminal assembly (for ver- tical flue application).
  • Page 24 Fig. 44 Starting at the appliance end, assemble the exten- 5.11 DOMESTIC HOT WATER (Fig. 46) sion duct sections, making each inner and outer (flue) joint by inserting the spigot end into the socket 5.11 .1 The domestic hot water circuit does not end of the next tube.
  • Page 25 Close it engineer (supply cord available from only when clear water, free of bubbles, Ravenheat Manufacturing Ltd). flows out. In the same way release air from any high points in the pipework. - Continue filling the system until at least PROGRAMMABLE TIME CLOCK 1.5 bar registers on gauge.
  • Page 26 SETTING THE SYSTEM DESIGN - If external controls are installed (e.g. PRESSURE timeclock and thermostat) make sure The design pressure must be a min. 1 bar that they call for heat. and max. 1.5 bar. These figures are read - Press summer/winter selector switch la off the pressure gauge.
  • Page 27 INSTRUMENT PANEL Fig. 50 Supplied By www.heating spares.co Tel. 0161 620 6677...
  • Page 28 Detach one of the wires going to modu- 6.12 S E T T I N G C E N T R A L H E A T I N G G A S lator 104 (Fig. 51) and make the boiler PRESSURE THE BOILER COMES SET operate just as was done for checking AT MID POSITION RATING FOR USE ON...
  • Page 29 6.16 HANDING OVER TO THE USER 6.16.1 After completion of installation and com- missioning of the system, the installer should hand over to the Householder by taking the following actions: Once the process of commissioning the boiler is - Hand the “User’s Instructions” to the complete, the commissioning engineer MUST com- Householder and explain His/Her plete his section in the Benchmark log book.
  • Page 30 6 - Main burner 2 4 - Main burner 46 - Header gasket 11- Chamber cover 27 - Auto air vent valve 58 - Ceramic insulation 10- Combustion chamber 31- Seal 8 4 - Depression chamber 12- Air restriction ring 37- Gasket 48 x 42 x 1 85 - Fan fastening bracket...
  • Page 31 Examine internal pipe-work connections 7.2.3 and automatic air vent for any water leaks. Rectify if necessary. Ravenheat are a member of the Benchmark initiative and fully supports the aims of the 7.2.4 Examine the combustion chamber insulating programme. Benchmark has been instruct- material and renew if damaged (sect.
  • Page 32 TO REMOVE/REPLACE THE FAN IMPORTANT: When replacing a heat ASSEMBLY (Fig. 58) exchanger new seals must be used. 7.6.1 Remove front casing (sect. 7.3). TO REMOVE/REPLACE COMBUSTION Remove combustion chamber front cover CHAMBER INSULATION PANELS as in (sect. 7.4). (Fig. 64). 7.6.2 Disconnect the electrical connections from 7.9.1...
  • Page 33 Fig. 63 Fig. 60 Fig. 64 TO REPLACETHE ELECTRODES 7.10 (Fig. 66) Remove front casing (sect. 7.3). 7.10.1 Remove combustion chamber front cover (sect. 7.4). Fig. 61 Detach the wire from electrode and then 7.10.2 unscrew the screw that secures it to the burner assembly and remove.
  • Page 34 7.14 TO REMOVE/REPLACE THE MAIN INJECTORS 7.14.1 Remove the front panel of the casing and the combustion chamber front cover (sect. 7.3 & 4). 7.14.2 Unscrew the union (Fig. 70) 7.14.3 Unscrew the 4 screws securing the injector manifold to the burner (Fig. 71). Fig.
  • Page 35 7.15 TO REMOVE/REPLACE THE MAIN Fig. 73 BURNER 7.15.1 Remove the front panel of the casing and the combustion chamber front cover (sect. 7.3 & 7.4). 7.15.4 R e m o v e t h e i n j e c t o r s m a n i f o l d a s described in sect.

  • Page 36: Hot Water Control

    7.22.3 Remove the two wires that connect to the 7.19 TO REMOVE/REPLACE THE HEATING overheat thermostat making sure that CONTROL AND DOMESTIC HOT WATER CONTROL these wires will subsequently be recon- nected to the same poles (Fig. 94). Remove the casing (sect. 7.3) lower the 7.19.1 instrument panel by unscrew the 2 screws 7.22.4...
  • Page 37 Fig. 81 7.25 TO REMOVE/REPLACE THE PUMP (Fig. 88) 7.25.1 Remove the casing (sect. 7.3) and lower the instrument panel (sect. 7.19.1). 7.25.2 Remove lower grill of the casing (sect. 5.4.2 & 5), lower the electric box (sect. 7.16.2 & 3). 7.254 Detach the supply wire.
  • Page 38 7.27 TO REMOVE/REPLACE THE CENTRAL 7.28 TO REMOVE/REPLACE THE CENTRAL HEATING EXPANSION VESSEL HEATING AND/OR HOT WATER CON- TROL THERMISTOR In the unlikely event of failure of the central 7.27.1 Remove the casing (sect. 7.3) and lower heating expansion vessel It is recommend- ed a suitable expansion vessel be fitted the instrument panel (sect.
  • Page 39 7.29.4 Close the on/off valves for the central heat- ing circuit and drain the water from the boil- er drain point (Fig. 93). Disconnect the unions 1 and 2 (Fig. 92) slight- 7.29.6 ly turn and remove pipe and auto air vent. 7.29.7 Replace in reverse order, using new seals.
  • Page 40 Fig. 89 Fig. 92 Fig. 91 Fig. 93 Supplied By www.heating spares.co Tel. 0161 620 6677...
  • Page 41 8 FAULT FINDING CENTRAL HEATING Section Switch on Select “winter” Central Heating Stat to maximum Ensure external controls calling for heat (Room Stat/Tune Clock/TRV) Supplied By www.heating spares.co Tel. 0161 620 6677...
  • Page 42 FAULT FINDING DOMESTIC HOT WATER Before continuing it may be necessary to see Central Heating Fault Finding. Select only (Summer) Domestic Hot Water. Open Domestic hot tap close to appliance. BOILER NOT OPERATIONAL ON TIMER (INTEGRAL) Switch on/Select “Winter”/Central Heating Stat to Maximum/Ensure External control calling for heat (Room Stat/TRW Supplied By www.heating spares.co Tel.
  • Page 43 ELECTRICAL SYSTEM DIAGRAM Fig. 94 SECTION 9 Supplied By www.heating spares.co Tel. 0161 620 6677...
  • Page 44 SECTlON 10 IMPORTANT As with all flues the kits must be installed 10.0 INSTALLATION INSTRUCTIONS taking due account of the current issue of T W I N F L U E P I P E ( E C C E N T R I C F L U E BS 5440 parts 1 &...
  • Page 45 Figures 2.8, 3.8 and 4.8 show the versatility of this 90” M/F bend consisting of: flue system. Measurements and bends must be cal- culated correctly so as not to oversize maximum flue 90” elbow with ‘0’ ring side F lengths. 80 mm dia ‘0’...
  • Page 46 Fig. 3.8 Exhaust/suction system with two separate rated 80 diam pipes - exhaust on flat or sloping roof, suction from vertical wall. Maximum distance D = I + E + T = Total exhaust/inlet pipe = 27 metre. Exhaust terminal must not be cut. Min inlet pipe distance = 0.1 metre.
  • Page 47 EXPLODED PARTS DIAGRAM SECTION Supplied By www.heating spares.co Tel. 0161 620 6677...

  • Page 48: Air Pressure Switch

    SECTION 12 RAVENHEAT SHORT LIST OF SPARE PARTS LS 80 (T) G.C. LS 100 (T) G.C. Pos. Part. No. Part. No. Part. No. Part. No Description 0014PAN09005/0 0014PAN09005/0 INSTRUMENT PANEL 00121NT0900510 0012lNT09005/0 MAIN SWITCH OOl2POT05005/0 0012POT05005/0 D.H.W/C.H. POTENTIMETER 371267 0007TER0301010...
  • Page 49 RAVENHEAT SHORT LIST OF SPARE PARTS CONTINUED LS 100 (T) LS 80 (T) G.C. G.C. Part. No. Part. No. POS. Part. No. Part. No Description 5018046 378864 5018046 378864 GASKET 30X22X2 0013GUA01045/0 371274 0013GUAO1045/0 GASKET 48X42X1 0010TVB009055/0 0010TVB009055/0 PIPE TO AIR PURGE...
  • Page 50 Chartists Way, Morley, Leeds, LS27 9ET. Telephone: (0113) 252 7007 Tfax: (0113) 238 0229 Supplied By www.heating spares.co Tel. 0161 620 6677...

This manual is also suitable for:

Little star ls 80 tLittle star ls 100Little star ls 100 t