The Range Linea 24 ● Linea 28 Installation & Servicing Instructions British Gas Service Listed G.C. No. 47 094 27 (Linea 24) G.C. No. 47 094 28 (Linea 28) G.C. No.
CONTENTS Section Subject Section 1 Page no Introduction General Layout 1 1 Design Principles & Operating Principles Schematic Diagram Central Heating Mode Domestic Hot Water Mode Safety Devices Frost Thermosat 2 2 2 2 2 2 Section 3 Technical Data Dimensions & Contents Connection Sizes Installation Requirements Electrical Details Performance & Limitations Working Pressure (H/W & C/H) Flow Rates Central Heating Pump Duty 3 3 3 3 3 3 4 4 4 Section 4 General Requirements Related Documents Location of
SECTION 1 INTRODUCTION The Vokèra Linea 24 & 28 are combined central heating and domestic hot water appliances. By design they incorporate full sequence electronic ignition, circulating pump, expansion vessel, safety valve, temperature gauge, pressure gauge and 3 port diverter valve. They are produced as room sealed appliances suitable for wall mounting applications only.
SECTION 2 2.1 DESIGN PRINCIPLES AND OPERATING SEQUENCE Fig.1 illustrates the general layout of components. Fig.2 illustrates the operating principles described below. 2.2 Central Heating Mode 2.2.1 When the various switches and controls impose a demand for heat, the pump is started. If the primary pressure is sufficient, the electronic circuitry is energised. The fan is started, the gas valve is energised at an intermediate rate and the electronic ignition goes through an ignition attempt. 2.2.
SECTION 3 3.1 3.2 TECHNICAL DATA 24 28 Height 820mm (32.3) 820mm (32.3) Width 400mm (15.7 450mm (17.7) 355mm (14.0) 355mm (14.0) Weight dry 41kg (90lb) 43kg (94.6lb) Weight full 44kg (97lb) 46kg (101lb) Water content: 3 litres (.66 gals) for further dimensions see figs 12 - 16 Connection sizes Heating flow and return: Nut and olive for 22mm o.d. Cold water inlet: Nut and olive for 15mm o.d. Hot water outlet: Nut and tail for 15mm o.d. Gas Service: Nut and tail for 15mm o.d.
Central Heating output range Max. 28.0 kW (95,563 Btu/h) Min. 9.9 kW (33,788 Btu/h) Designed temp rise 20°C Max. flow temperature 85°C 3.7 Working Pressure Heating System (All models) Maximum 1.5bar/15m w.g./50ft w.g. Minimum 0.15bar/1.5m w.g./5ft w.g. Safety valve setting 3bar/30m/102ft w.g. Nominal hot water production Temp. rise of 30°C 13.4l/min. Temp. rise of 35°C 11.5l/min. 3.8 Flow Rates (All models) Min. waterflow (dhw) 2.0l/min. (0.
SECTION 4 4.0 GENERAL REQUIREMENTS A compartment used to enclose the boiler must be designed and constructed specifically for this purpose. An existing cupboard or compartment may be used provided that it is modified for this purpose. General Requirements This appliance must be installed by a competent person in accordance with the Gas Safety (Installation & Use) Regulations 1998. 4.
For protection of combustibles, refer to BS 5440:1 where the terminal is less than 2m (6.6ft) above a pavement or platform to which people have access (including any balcony or flat roof the terminal must be protected by a guard of durable material). A suitable guard is available from Vokera Ltd. Part No 018, G.C. No. 301 106 This guard must be fitted centrally over the terminal. Mark the positions of the fixings, drill the wall and secure using wall plugs and 3 of 1˚" No.8 plated screws. 4.
Fig. 5 Fig. 5a N.B. Vokèra Ltd recommend a 2-pipe system. Single pipe systems are more liable to be troublesome unless carefullly designed and installed.
4.6.6 Air Release Points These must be fitted at all high points where air will naturally collect, and must be sited to facilitate complete filling of the system. 4.6.7 The appliance has an integral sealed expansion vessel to accommodate the increase of water volume when the system is heated. It can accept up to 8 litres (1.8gals) of expansion water. If the appliance is connected to a system with an unusually high water content.
SECTION 5 INSTALLATION Fig. 8 5.1 Delivery (fig. 8) The appliance is delivered in a heavy duty cardboard carton. Lay the carton on the floor with the writing the correct way up. 5.2 Unpacking (fig. 9) Pull both sides of the top of the carton open. Do not use a knife. Remove the hanging bracket, literature pack and fittings pack, from the packaging. Remove the package supports. Lift the appliance from the carton and lay the appliance down with the white frame on the floor.
5.4 Mounting the appliance The appliance should be mounted on a smooth, vertical surface, which must be capable of supporting the full weight of the appliance. Care should be exercised when determining the position of the appliance with respect to hidden obstructions such as pipes, cables, etc. When the position of the appliance has been decided – using the template supplied – carefully mark the position of the fixing jig/mounting bracket assembly (see fig. 7) and flue-hole (if applicable). 5.4.1 5.4.
FITTING THE STANDARD (2359029) HORIZONTAL FLUE KIT (see 5.4.1) EXTENDING THE HORIZONTAL FLUE If the horizontal flue requires extension/s or additional bend/s, the horizontal flue terminal kit (2359029) must be used. Connect the bend – supplied with the terminal kit – to the top of the boiler using the clips, screws, & gaskets supplied. The additional bends & extensions have an internal push-fit connection, care should be taken to ensure that the correct seal is made when assembling the flue system.
Using the dimensions given in fig. 14 as a reference, mark and cut a 105mm hole in the ceiling and/or roof. 5.5.3 Fit the appropriate flashing plate to the roof and insert the vertical flue terminal through the flashing plate from the outside, ensuring that the collar on the flue terminal fits over the flashing. The fixing holes for the wall-mounting bracket & jig should now be drilled and plugged, an appropriate type and quantity of fixing should be used to ensure that the bracket is mounted securely.
1 metre of the appliance flue outlet. It is recommended that the condensate drain kit should be fitted in the vertical plane, however it can be fitted horizontally with care. • Fit the first bend to the condensate drain kit or exhaust connection manifold by firmly pushing in to position. • Using the two holes in the exhaust connection manifold as a guide, drill a 3mm hole in each and secure using the screws provided. • Connect the air inlet pipe to the air baffle as above.
NOTE • Before cutting twin flue pipes ensure allowances have been made for connection onto the previous piece and onto the concentric to twin converter. The last twin flue pipes must be pushed 50mm onto the male spigots of the concentric to twin converter. NOTE You must ensure that the entire flue system is properly supported and connected. When cutting an extension to the required length, you should ensure that the excess is cut from the plain end of the extension.
5.6 Connecting the Gas and Water 5.6.1 Figs. 6 and 16 show the locations of the fittings. 5.6.2 Do not over tighten nuts, use another spanner to apply counter force to avoid damaging the appliance 5.6.3 Gas Supply Connecting the gas supply. N.B. IT IS ESSENTIAL THAT ALL EXTERNAL CONTROL CIRCUITS AND WIRING IS WIRED FROM THE SAME ELECTRICAL ISOLATOR AS SERVES THE APPLIANCE. Factory fitted internal wiring must not be disturbed when wiring external controls. 5.7.
5.7.4 5.7.5 Pass the cable through one of the cord anchorage points and connect the wires Brown to L, Blue to N, and Green/Yellow to . Arrange the cable so that should the cable slip the anchorage the current carrying conductors become taut before the earthing conductor. Securely tighten all terminal screws and arrange the cable with slack between the cable anchor and the terminal block. Tighten the cord anchorage screw until the cable is secure. 5.7.
SECTION 6 6.1 COMMISSIONING Where the text bears identifying numbers in brackets, refer to figs. 1 and 2 unless otherwise instructed. 6.2 Gas Supply Installation Inspect the entire installation including the meter. Test for soundness and purge, all as described in BS6891:1988. 6.3 Central Heating Systems 6.3.1 IMPORTANT DO NOT RELEASE AIR FROM THE RED SEALED EXPANSION TANK. It is charged with air at the factory from .75 - .80 bar (11 - 12psig) 6.3.2 Initial filling of the System 6.3.2.1 See 3.4.
6.5.5 6.5.6 If during the ignition attempt period (10 secs approx.) the boiler fails to light, the ignition control circuit will go to lockout. This is indicated by the status LED (14) flashing red accompanied by a flashing error code 01 shown in the temperature indicator (15). The gas valve is de-energised, but leaves the fan and pump running for approximately 2 minutes after lockout.
Setting the Maximum Rate for Central Heating 6.11 Filling, Testing and Regulating the Domestic Hot Water System The maximum heat input for the central heating mode is not adjustable. When central heating is selected the appliance will light at 75% of maximum heat input for a period of approximately 15 minutes, whereupon the appliance will burn at maximum rate. Should the appliance reach temperature during the 15 minute period the burner will modulate further to suit system load. 6.11.
6.12 Final Check for Operations 6.16 Turn mode selector switch to the OFF/RESET position, disconnect pressure gauge, re-tighten screw. Relight boiler. Complete details of the boiler, controls, installation and commissioning in the log book supplied with the boiler. This is an important document which must be correctly completed and handed to the user. Failure to install and commission this appliance to the manufacturers instructions may invalidate the warranty. 6.12.1 Re-check for gas soundness 6.12.
SECTION 8 8.1 SERVICING INSTRUCTIONS 6. Gain general access as described in 8.4. General To ensure the continued safe and efficient operation of the appliance, it is recommended that it is checked and serviced as necessary at regular intervals. 7. Remove main burner (see 8.6). Lightly clean with a soft brush and inspect for damage. If during initial inspection any combustion irregularity was suspected, remove injectors and clean or replace (see 8.7).
8.4 To Gain General Access/Assembly To remove components access to the interior is essential. Refer to figs. 10 & 11. Ensure electricity supply is isolated before carrying out any servicing. 8.4.1 To remove front casing. Push to release front door panel and lower to reveal controls. Loosen the 2 captive screws securing the front control panel to the lower part of the casing and lower to reveal inside of boiler. (fig.
8.6 Main Burner and Electrodes Part No's Sense Electrode - 24&28 - 2092 Refer to figs. 27,28 & 29 8.6.1 Gain general access as 8.4. 8.6.2 Remove room sealed front cover as 8.5 8.6.3 Remove front of combustion chamber by releasing screws (fig. 28). 8.6.4 Remove four burner retaining screws (fig. 30). Ease burner forward and rest on chamber base (fig. 29). 8.6.5 Release electrode and earth retaining screws & carefully remove electrode. 8.6.
8.9 Flue Fan Part No. 24-5910 28-5911 8.9.1 Remove room sealed front cover plate (8.5) and front of combustion chamber (8.6.3). 8.9.2 Loosen maintenance clip securing screws (see fig. 31) and slide upwards to clear joint. 8.9.3 Remove silicone pipes from nozzles on inner flue bend 8.9.4 Remove 5 flue hood retaining screws (see fig. 31). NOTE: When removing the two side screws the two air baffle plates can be removed. 8.9.
8.12 Ignition PCB 8.12.1 Gain general access as 8.4. 8.12.2 Remove PCB cover. 8.12.3 Disconnect wires from ignition PCB. 8.12.4 Remove ignition PCB. 8.12.5 Replace in the reverse order ensuring wires are replaced correctly. 8.13 Gas Control Valve (complete) Part No. 24&28- 1836 fig. 32 8.13.1 Turn off gas service tap. 8.13.2 Remove Ignition control box as 8.12 8.13.3 Pull off silicone tube from gas valve regulator. 8.13.4 Disconnect earth leads from gas valve. 8.13.
8.14 Pump Part No 10020437 See fig. 33 8.15.5 Disconnect cold water inlet valve from flow switch by undoing union. 8.14.1 Gain general access as 8.4 8.15.6 8.14.2 Close heating flow and return valves (fig. 6), by turning 1/4 turn until indicating lines are horizontal. Pull lever on head of safety valve to drain primary circuit to boiler. Disconnect union at top of flow switch and two electrical tab connectors. 8.15.7 Undo lock nut securing flow switch to base frame and remove. 8.15.
8.17 Removal of Domestic Hot Water Heat Exchanger Refer to figs. 34 and 35 8.17.1 Gain General access 8.4 8.17.2 Place receptacle or an absorbent pad below appliance to catch trapped water. 8.17.3 Close cold water inlet stopcock. See fig. 6 8.17.4 8.17.5 8.19.2 Switch OFF mains electricity and gain general access. Disconnect electricity supply and wiring for external controls from the appliance. See 5.7 8.19.3 Close heating flow and return valves (fig.
8.20 Safety Valve Part No. 1806 Refer to figs.34 & 35 8.20.1 Gain general access as 8.4. 8.20.2 Close heating flow and return valves (fig. 6) by turning 1/4 turn until indicating lines are horizontal. Pull lever on head of safety valve to drain primary circuit to boiler. 8.20.3 Disconnect safety valve discharge pipe. 8.20.4 Loosen grub screw at base of safety valve and pull forwards releasing valve from O' ring seal. 8.20.5 Replace in reverse order. 8.21 Removal of Electrical Components 8.21.
8.21.7 Motorised Valve 8.21.8 Gain general access as 8.4 8.21.9 Release motorised valve by removing retaining clip. 8.21.10 Remove electrical plug in connector. 8.21.11 Reassemble in reverse order. 8.21.12 Printed Circuit Board Part No. 24&28-10020478 8.21.13 Gain general access as 8.4 8.21.32b DOMESTIC HOT WATER Close cold water inlet stopcock. See fig.6 and 6.3.3.4. Open lowest draw-off or drain tap on hot water system. 8.21.33 Remove ignition control box as 8.12 8.21.
8.23 Replace the grey wire back onto the modulator coil together with the protective cover. Setting Gas Pressures ALL SETTINGS DONE WITH A SUITABLE MANOMETER CONNECTED TO GAS VALVE AS INSTRUCTED IN 6.6.5 8.23.1 Setting Maximum Rate Turn off electrical supply to boiler and follow instructions in section 8.4 to gain access. Refer to Fig. 23 & 37. Turn on the electricity supply and the appliRemove gas ance mode selector switch to pressure adjustment protective cover (fig. 37).
8.24 Soft Light Ignition 8.24.2 Combustion Analysis Incorporated on the appliance is a combustion switch (fig.1, 17). Once the gas pressures have been set activation of the combustion switch automatically fires the appliance at maximum rate in central heating. The appliance will be held at maximum rate until the maximum temperature of the appliance is achieved. The appliance will not modulate during this period.
SECTION 9 OPERATIONAL CHECKS AND WIRING DIAGRAMS 9.1 On completion of any service/fault finding task which has required the breaking and remaking of electrical connections, the checks Earth Continuity, polarity and Resistance to Earth must be repeated. If a flame is detected during the ignition attempt time (8-12 seconds) the sparking will cease, the gas valve will remain energised and the appliance will produce hot water as described below.
9.2.3 Central Heating Mode In this mode the mode selector switch must be position. turned to the With all controls calling for heat the motorised valve returns, mechanically diverting primary water to the central heating circuit. The pump and fan will run and the pressure differential switch will be activated. This in turn will energise the electronic ignition control box. The gas valve will be energised and the electrode will start to spark.
START LINEA 24 / 28 TEST A : CHECKING OPERATION OF ELECTRONIC CONTROL BOARD AT START UP IS THE DIVERTER VALVE IN THE DHW POSITION NO NO CHECK &/OR REPLACE WIRING OR CONNECTIONS NO 230V ON MOTORISED VALVE BETWEEN TERMINALS M11.1 & M11.3 ON PCB IS THE LED GREEN NO TURN ON HOT TAP A2 CHECK &/OR REPLACE DIVERTER VALVE YES YES YES YES IS THERE 5 VDC BETWEEN TERMINALS M5.5 & M5.
A1 IS THERE 24 VDC BETWEEN TERMINALS M5.4 ON PCB & PURPLE WIRE ON AIR FLOW SWITCH YES CHECK WIRING AND CONNECTIONS NO YES IS THERE 24 VDC BETWEEN TERMINALS M5.4 ON PCB & RED/BLACK WIRE ON AIR FLOW SWITCH NO NO ARE THE VENTURI TUBES AND THE SILICONE AIR TUBES CLEAN IS THERE 24 VDC BETWEEN TERMINALS M5.4 ON PCB & BLUE/BLACK WIRE ON HIGH LIMIT THERMOSTAT RESET THE HIGH LIMIT THERMOSTAT YES IS THE DP > 11 mm W.G. NO IS THERE 24 VDC BETWEEN TERMINALS M5.4 AND M3.
A2 5 VDC BETWEEN TERMINALS M2.1 & M2.2 ON DISPLAY BOARD IS THE LED FLASHING RED NO NO YES NO REPLACE DISPLAY BOARD IS DIGITAL DISPLAY ILLUMINATED 5 VDC BETWEEN TERMINALS M9.1 & M9.2 PCB YES YES NO YES IS LED ASSEMBLY OK NO YES REPLACE THE LED ASSEMBLY 230V PRESENT BETWEEN M16.L & M16.
START LINEA 24 / 28 TEST B : CHECK CONTROL IN DHW MODE TURN MODE SELECTOR SWITCH TO H/W POSITION AND H/W THERMOSTAT TO MAXIMUM IS THERE A VOLTAGE >10 VDC BETWEEN TERMINALS M4.1 & M4.2 ON PCB TURN ON TAP DOES BURNER LIGHT NO NO IS THE RESISTENCE OF MODULATOR COIL APPROX. 40 OHM YES NO NO REPLACE GAS VALVE COMPLETE YES NO REPLACE WIRE AND CONNECTIONS TURN DHW THERMOSTAT TO MIN. DO BURNER AND FAN SWITCH OFF NO YES SWITCH DHW THERMOSTAT TO MAX.
START LINEA 24 / 28 TEST C: CHECK CONTROL IN C/H MODE TURN MODE SELECTOR SWITCH TO C/H SET C/H THERMOSTAT TO MAX. OPERATE R/STAT OR CLOCK, OR LINK TERMINALS TA & TA ON PLUG M16 240V BETWEEN M11.1 & M11.2 ON PCB NO IS THE DIVERTER VALVE IN CH POSITION? YES DOES BURNER LIGHT YES IS VOLTAGE ACROSS TERMINALS OF MODULATOR COIL < 5 VDC NO REPLACE PCB 38 YES CHECK &/OR REPLACE DIVERTER VALVE CHECK BOILER STARTUP TEST A YES IS THERE A VOLTAGE >5 VDC BETWEEN TERMINALS M4.1 & M4.
A SPARK AT ELECTRODE IS THERE 230V BETWEEN TERMINALS M14.1 & M14.
A4 DIGITAL DISPLAY SHOWING 03 YES NO DIGITAL DISPLAY SHOWING 04 NO DIGITAL DISPLAY SHOWING 06 YES REPLACE PCB YES NO CHECK DHW NTC SENSOR OR CONNECTION DIGITAL DISPLAY SHOWING 07 NO YES CHECK FLOW NTC SENSOR OR CONNECTION REPLACE PCB 40 Linea 24 & 28
B TURN OFF TAP YES END DO BURNER AND PUMP SWITCH OFF DO BURNER, FAN AND PUMP SWITCH OFF NO IS DHW FLOW SWITCH OK NO NO YES IS WATER FLOW TEMPERATURE >78˚C YES YES REPLACE PCB REPLACE DHW FLOW SWITCH NO NO DOES FAN RUN IS DHW FLOW SWITCH OK NO YES IS DHW NTC OK NO REPLACE DHW FLOW SWITCH IS WATER FLOW TEMPERATURE < 78˚C NO YES REPLACE PCB YES REPLACE DHW NTC YES DOES FAN SWITCH OFF NO IS DHW NTC OK YES END NO YES REPLACE PCB Linea 24 & 28 REPLACE DHW NTC 41
C1 DO BURNER AND FAN SWITCH ON WAIT FOR WATER FLOW TEMPERATURE TO BE< 80*˚C NO YES IS WATER FLOW TEMPERATURE >80 *˚C REMOVE THE LINK BETWEEN TA & TA ON PLUG M16 ON PCB YES NO WAIT 30 SEC.
C WAIT 1 MIN. IS VOLTAGE ACROSS TERMINALS OF MODULATOR COIL >10 VDC YES NO REPLACE PCB SWITCH CH THERMOSTAT TO MIN. DO BURNER AND FAN SWITCH OFF WAIT FOR WATER FLOW TEMPERATURE TO BE >40˚C NO IS WATER FLOW TEMPERATURE >40 ˚C YES SWITCH CH THERMOSTAT TO MAX. NO YES REPLACE PCB DO BURNER AND FAN SWITCH ON NO YES IS TIMER JUMPER PRESENT AT JP8 ON PCB WAIT 3 MIN.
SECTION 10 APPENDIX Instructions for A. (A) Fitting Vokèra 24 Hour Time Switch (Part No. 201) and Vokèra Digital 7 Day Time Switch (Part No. 202) (B) Wiring to external Time Switches and Room Thermostat (C) Wiring for 'S' & 'Y' Plan Installations. Installation of the Vokèra time switches (24 Hr and 7 Day) Remove printed circuit board cover (5 screws). Remove the clock aperture blanking plate (1) fig.1 by squeezing the 4 lugs on the rear of the plate together and push the plate out.
Fig. 5 To internal timeclock multiplug connector (unused) IMPORTANT DO NOT USE SMALLER TERMINAL BLOCK MARKED 'POS' 'POS' '-''S' WHEN CONNECTING INTERNAL OR EXTERNAL ELECTRICAL CONTROLS. Fig. 5 Showing 230v input electrical connection without room thermostat or internal time clock (Internal wiring loom for timeclock and link between = & TA remains) Fig. 6 Room thermostat Fig. 6 Showing 230v input electrical connection and room thermostat connection (connected between TA & TA) without internal time clock.
B. Earths have been omitted for clarity Wiring to External Time Switches and Thermostats. (i) General Schematic Diagram. Room Thermostat To ease wiring congestion at the appliance terminal strip, remove the wiring harness normally used for internal clock connection.
MODE SELECTOR SWITCH MUST BE IN THE POSITION. To ease wiring conjestion at the appliance terminal strip, remove the wiring harness normally used for internal clock connection. Wiring for 'Y' Plan Installations. NOTE: WHEN USING A 'Y' PLAN INSTALLATION THE MODE SELECTOR SWITCH WILL BE OVERRIDEN BY THE CONTROL CIRCUIT. To ease wiring conjestion at the appliance terminal strip, remove the wiring harness normally used for internal clock connection.
EXPLODED DIAGRAMS 9 1 13 46 44 45 14 17 36 15 16 20 21 47 25 6 41 34 22 33 32 31 30 51 50 43 52 42 28 29 26 27 KEY DESCRIPTION 1 6 9 13 15 16 17 20 21 22 25 27 28 29 30 48 24 Frame 01005133 Guard 1913 Case 1880 Plastic Trade Mark Label 1781 2A fuse 8968 100 mA fuse 1947 Cover 10021849 Printed Circuit Board 1847 Led Light Guide 1858 Printed Circuit Board 10020477 Instrumental panel 10021951 Door panel 1862 Quick primer pressure gauge 1857 Hole cap 8654 Pin 1867 28 01005134 1913 1922 1
1 23 4 5 6 2 3 22 16 32 34 32 34 32 34 14 13 7 10 30 17 9 28 30 12 11 8 28 KEY DESCRIPTION 24 28 1 2 3 4 5 6 7 8 9 10 11 2204 2164 10020439 1631 10020330 2165 10023567 10023570 10023569 1790 10023566 2204 2164 10020439 1631 10020330 2165 10023567 10023570 10023569 1790 10023566 Expansion vessel Flexible pipe Heating distributor manifold Pipe DHW actuator Clip Water supply stop cock Flexible pipe Non return valve Connection Heating cock Linea 24 & 28 12 13 14 16 17 22 23 28 30 32 34 Hea
1 43 44 44 11 10 3 12 5 4 24 19 22 44 11 44 45 43 23 23 2 26 7 8 44 17 6 45 13 9 45 50 44 15 18 16 51 21 20 39 27 38 30 33 29 28 32 31 KEY DESCRIPTION 24 28 1 2 3 4 5 6 7 8 9 10 11 12 13 15 16 17 18 19 20 2381 10023195 1847 10020437 1845 8036 9807 2908 10023198 2258 8484 10021041 10022125 8008 2903 2940 2047 9263 01005137 2378 10023202 1847 10020437 1845 8036 9807 2908 10023203 2258 8484 10021041 10022125 8009 2903 2940 2047 9263 01005137 50 Heat exchanger Pipe Pipe Pump Wi
2 25 2 25 29 3 33 6 1 4 32 11 13 5 19 26 28 12 17 14 19 16 50 8 9 10 7 51 KEY DESCRIPTION 24 28 1 2 4 4 5 6 7 8 9 10 11 12 2072 1549 5295 5297 10022027 0442 10020216 5072 3139 4007 1457 10020838 2073 1549 5317 5319 10022027 0442 10020216 5072 3139 4007 1457 10020838 Air box bottom Ambidx air box side NG Burner NP LPG burner NP Spark electrode Air box clip Cover Washer Glass Glass flange Silicone tube Gas valve solenoid Linea 24 & 28 13 14 16 17 19 25 26 28 29 50 51 Gas pipe Gas valv
6 8 7 4 14 5 12 17 50 19 51 20 23 27 24 25 30 KEY DESCRIPTION 24 28 4 5 6 7 8195 1457 8086 8195 1457 8086 23 8085 8083 5916 5917 10023181 6491 1842 8085 8083 5916 5917 10023183 6492 1842 24 8 12 14 17 19 20 52 Pressure differential switch Silicone tube Brass cap Block with combustion analysis check Fan flue connection Clamp for 60 diam.
ABLING AND DISABLING ELECTRONIC FUNCTIONS Certain electronic functions on the Linea range of appliances can be abled or disabled according to customer preference. The selections can be made by the addition or removal of jumper tags situated on the printed circuit board. Refer to fig. 40 for jumper positions on printed circuit board.
FUNCTIONAL FLOW DIAGRAM NOTE: L-N-E CONNECTION IS ADVISABLE Fig. 40 Key RT TSH SFS P.S. PDS HL SR SS MOD F P 3W SP/SE E.
red white-red white brown blue blue brown blue brown GREEN white-light blue white-brown white-purple RED red purple black blue brown brown brown blue brown white grey grey red red purple white red white red Linea 24 & 28 black orange NOTE: L-N-E CONNECTION IS ADVISABLE CONTROL SWITCHING OF TIME CLOCK AND ROOM THERMOSTAT IS 230 V.a.c. GENERAL LAYOUT & ILLUSTRATED WIRING DIAGRAM Fig.
PRELIMINARY ELECTRICAL SYSTEM CHECKS A. EARTH CONTINUITY CHECK - appliance must be electrically disconnected - meter set on Ω (ohms) x 1 scale and adjust zero if necessary. a) Test leads from any appliance earth point to earth pin on plug - resistance should be less than 0.1 Ω (ohm). If the resistance is greater than 0.1 Ω (ohm) check all earth wires for continuity and all contacts clean and tight. B.
SECTION 11 L.P.G. INSTRUCTIONS 11.1 Gas Rates (LPG) 28 24 Min. Gas Rate 1.52 litres/h 1.63 litres/h Max. Gas Rate 4.12 litres/h 4.85 litres/h 11.2 Burner Details (LPG) 24 28 Polidoro NP12 Polidoro NP14 Main Burner Injectors 12 x 0.77 14 x 0.77 Burner Pressure Max. Rate 36.0 mbar 36.0 mbar Burner Pressure Min. C/H 6.5 mbar 5.5 mbar Burner Pressure Min. DHW 5.1 mbar 4.3 mbar Burner Pressure Soft Light 16.7 mbar 16.7 mbar Main Burner 11.3 RELATED DOCUMENTS 11.
11.6.6 11.6.7 If the reading is incorrect it should be adjusted as follows: Reduce the domestic water flow rate to approximately 3-4 litres/min. Turn the domestic control knob slowly to minimum the boiler output will reduce to the minimum setting. If low flame cannot be established in this way, turn off the electricity supply, and disconnect a grey wire from the modulator coil. Switch on the electricity supply, the boiler will now light at the minimum setting.
Linea 24 & 28
Linea 24 & 28
Linea 24 & 28
Cod. 10023216 - 21/02 - Ed. 3 energizing home heating Vokèra Ltd. Catherine House, Boundary Way, Hemel Hempstead, Herts, HP2 7RP Email: enquiries@vokera.co.uk Web: www.vokera.co.uk General Enquiries - Tel: 01442 281400 Fax: 01442 281460 Technical Advice - Tel: 0870 333 0520 Spare Parts - Tel: 0141 945 6820 After Sales Service - Tel: 0870 333 0220 Vokèra Ireland West Court, Callan, Co Kilkenny Tel: 056 55057 Fax: 056 55060 Vokèra Ltd. reserve the right to change the specifications without prior notice.
