Installation& ServicingInstructionsTHESE INSTRUCTIONSTO BE RETAINEDBY USERMynute28e - 35e
8MynuteSECTION 4 INSTALLATION4.1 DELIVERYThe appliance is delivered in a heavy-duty card-board carton. Lay the carton on the floor with thewriting the
9MynuteFITTING THE TELESCOPIC FLUE KIT(0225705 & 0225710)Carefully measure the distance from the centreof the appliance flue outlet to the face of
10MynuteFITTING THE STANDARD (2359029)HORIZONTAL FLUE KIT (see 4.4.1)Carefully measure the distance from the centreof the appliance flue outlet to the
11MynuteUsing the dimensions given in fig. 9 as a reference,mark and cut a 105mm hole in the ceiling and/orroof. Fit the appropriate flashing plate to
12Mynute4.5.3.1 INSTALLATION OF TWIN ADAPTOR KIT (see fig. 10)● Remove the flue restrictor ring from theappliance flue outlet (if fitted).● Insert the
13MynutePush-fit the twin flue pipes onto the concentric totwin converter ensuring that the exhaust pipeconnects to the exhaust connection on theconce
14Mynute5.1 GAS SUPPLY INSTALLATIONInspect the entire installation including the gasmeter, test for soundness and purge. Refer to BS6891 for specific
15Mynuteare also calling for heat. Turn the mode selectorknob to the ‘on’ position (fig. 1).The appliance will now go through an ignitionsequence as d
16MynuteSECTION 6 SERVICING6.1 GENERALTo ensure the continued safe and efficient opera-tion of the appliance, it is recommended that it ischecked an
17MynuteFig. 206.7 AUTOMATIC AIR RELEASE VALVE(see fig. 18) (AAV)Carry out component removal procedure as de-scribed in 6.4.Using a suitable pair of p
ContentsDesign principles & operating sequence Page1.1 Principle components 21.2 Mode of operation 21.3 Safety devices 2Technical data Page2.1 Pe
18MynuteDisconnect the electrode lead from its connectorat the rear of the boiler. Remove the retainingscrew for the burner thermostat and remove thet
19Mynute6.19.2 EXPANSION VESSEL REMOVAL (with insuf-ficient clearance above)Carry out component removal procedure as de-scribed in 6.4.Disconnect the
20Mynute7.1 CHECKING APPLIANCE OPERATIONWhen carrying out any repairs or servicing to theappliance, the relevant commissioning proceduremust be undert
21Mynute7.5 CHECKING THE EXPANSION VESSELCarry out the component removal procedure asdescribed in 6.4. You must ensure that the boileris completely dr
22Mynute7.8 FAULT FINDINGBefore attempting any fault-finding, the electricalchecks as detailed in 7.7 must be carried out.Isolate the appliance from t
23MynuteFAULT FINDING TEST ‘A’ (Mynute 28e-35e): turn the selector switch to the reset positionSTARTStatus LEDis greenGo to test "C"Status L
24MynuteFAULT FINDING TEST ‘C’(Mynute 28e): turn the selector to the “on” positionSTARTDoespump runIs there230V betweenterminalsM15.1 &M15.2NONORe
25MynuteFAULT FINDING TEST ‘C’(Mynute 35e): turn the selector to the “on” positionSTARTDoespump runIs there230V betweenterminalsM15.1 &M15.2NONORe
26MynuteFAULT FINDING TEST ‘D’ (Mynute 28e-35e): turn the selector to the “on” positionSTARTDoesburner lightDoes burnerstay lightNOYESENDYESIs sparkel
27MynuteSECTION 8 WIRING DIAGRAMS8.1 EXTERNAL WIRINGThe appliance comes with a factory fitted link toallow basic operation of the boiler via the modes
1Mynute INTRODUCTIONGeneral layout1 Safety valve2 Pressure switch3 Hydraulic manifold4 Pump5 Automatic air release valve6 Electrode7 Combustion chambe
28MynuteS plan system:external programmer or integral Vokera programmerFig. 28
29MynuteY plan system: external programmer or integral Vokera programmerFig. 29Appliance terminal strip3-Port mid-position valveCylinder thermostatAdd
30MynuteFUNCTIONAL DIAGRAM 28eNOTE: L-N-E CONNECTION IS ADVISABLEKeyR.T. Room thermostat (external controls)P.S. Water pressure switchP.D.S. Different
31MynuteFUNCTIONAL DIAGRAM 35eNOTE: L-N-E CONNECTION IS ADVISABLEFig. 31KeyR.T. Room thermostat (external controls)P.S. Water pressure switchD.A.P.S.D
32MynuteNOTE. L-N-E CONNECTION IS ADVISABLE CONTROL SWITCHING OF TIME CLOCK AND ROOM THERMOSTAT IS 230 V.a.c.FUNCTIONAL DIAGRAM 28eFig. 32
33MynuteFUNCTIONAL DIAGRAM 35eNOTE. L-N-E CONNECTION IS ADVISABLE CONTROL SWITCHING OF TIME CLOCK AND ROOM THERMOSTAT IS 230 V.a.c.Fig. 33
34MynuteSECTION 9 EXPLODED DIAGRAMS616171820483826394012495043513262122262701990363364131400401 POS. DESCRIPTION 28 E 35 E1 Frame R01005134 R01005212
35Mynute272723224093317414150 POS. DESCRIPTION 28 E 35 E3 Pressure switch R2044 R20447 Heating by-pass valve R1552 R15529 Heating distributor manifol
36Mynute29028200200820228543 2001028420092877200628828811220112157200635 E POS. DESCRIPTION 28 E 35 E1 Expansion vessel R2573 R25732 Flexible pipe R2
37Mynute1161718194529515920020013121482961120212221300301212335 E222135 E332 POS. DESCRIPTION 28 E 35 E1 Air box bottom R2073 R100247922 Air box side
2MynuteSECTION 1 DESIGN PRINCIPLE AND OPERATING SEQUENCE1.1 PRINCIPLE COMPONENTS● A fully integrated electronic control boardfeaturing electronic temp
38Mynute2529523201917161210712321243002529535 E POS. DESCRIPTION 28 E 35 E1 Combustion chamber assembly R6028 R100247512 Rear panel R5316 R100205183
39MynuteSECTION 10 L.P.G. INSTRUCTIONS10.3 GAS SUPPLYThe gas supply must be connected to theappliance by a competent LPG installer and mustbe of suffi
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Cod. 10024759 - 49/03 - Ed. 2Vokèra Ltd.4th Floor, Catherine House, Boundary Way, Hemel Hempstead, Herts, HP2 7RPEmail: [email protected] Web: ww
3MynuteSECTION 2 TECHNICAL DATARef. Condition 15 °C , 1013,25 mbar, dry gas NOTE: L.P.G. data refer to section 1028 e 35e2.1 PerformanceHeat input
4MynuteKey Location Minimum distanceA Below an opening (window, air-brik, etc.) 300 mmB Above an opening (window, air-brik, etc.) 300 mmC To the side
5MynuteA compartment used to enclose the appliancemust be designed and constructed specifically forthis purpose. An existing compartment/cupboardmay b
6MynuteFig. 5 AMake-upvessel or tankAutomaticair-ventNon-returnvalveStopcock5.0 metres minimumHeating returnFig. 63.6.8 FREQUENT FILLINGFrequent filli
7Mynutethe provision of a safe and satisfactory flue andtermination. The location must also permit anadequate air supply for combustion purposesand an
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