Sime MURELLE Installation And Servicing Instructions
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Sime MURELLE Installation And Servicing Instructions

Sime MURELLE Installation And Servicing Instructions

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Summary of Contents for Sime MURELLE

  • Page 1 Murelle installation and servicing instructions...

  • Page 2: Table Of Contents

    2.11 “MURELLE 20 TX CE IONO” BOILER SUPPLY ....... . .

  • Page 3: Technical Features And Dimensions

    European ced-draught sealed-room; Directives EN 297 - EN 483. – “MURELLE 20 BF CE IONO - 25 BF CE IONO” with These appliances can be fired by natural gas (methane) electronic ignition and modulation, forced-draught and butane gas (G30) or propane gas (G31).

  • Page 4: Technical Features

    MURELLE 20 9.3 ÷ 23.3 10.8 ÷ 25.7 – MURELLE 25 11.6 ÷ 27.6 13.5 ÷ 30.6 – MURELLE 20 BF 9.3 ÷ 23.3 10.8 ÷ 25.7 IP 44 MURELLE 25 BF 15.1 ÷ 29.6 18.0 ÷ 32.8 IP 44...

  • Page 5: Functional Diagram

    19 Air separator 20 Antifreeze stat (optional) 21 Gas cock (optional) 22 Domestic water cock (optional) 23 Fixing jig (optional) Fig. 2 1.4.2 “MURELLE BF” model 1 Fan 2 85°C limit stat 3 Water-gas exchanger 4 Combustion chamber 5 Pressure switch valve...

  • Page 6: Internal View

    11 100°C safety stat 12 Pilot burner 13 Gas valve 14 Circulation pump 15 Pressure switch valve Fig. 3 1.5.2 “MURELLE BF” model 1 Water pressure switch 2 D.H.W. sensor 3 D.H.W. exchanger 4 Blocking hinge 5 Pilot burner 6 Water-gas exchanger 7 85°C limit stat...

  • Page 7: System Available Head

    SYSTEM AVAILABLE HEAD 1000 1500 Portata l/h FLOW RATE l/h Fig. 4...

  • Page 8: General Requirements For Installation

    – be situated towards the bottom of an external wall, For the “MURELLE” BF versions, make a hole in the wall preferably opposite the one in which the burnt gases sufficiently large to allow for insertion of a 130 mm ø PVC outlet is located.

  • Page 9: Connecting Up "Murelle" Flue

    CONNECTING UP “MURELLE” FLUE 2.500 mm max. The flue for expulsion into the atmosphere of the products of combustion from natural draught appliances must meet the following requirements: – be gas-tight to the products of combustion, waterproof and thermally insulated;...

  • Page 10: Murelle Bf" Coaxial Air Inlet-Flue Outlet Assembly

    “MURELLE BF” COAXIAL AIR INLET-FLUE 2.6.2 Coaxial air intake-flue outlet assembly OUTLET ASSEMBLY accessories The air inlet-flue outlet assembly is supplied apart (optio- In addition to the coaxial duct kit, also the following can nal) in a kit (Code 8084802). It includes: be supplied on request (Fig.
  • Page 11 2.6.3 Positioning the outlet terminals 2.6.4 Coaxial duct outlet on roof The outlet terminals for forced-draught appliances may To install this type of arrangement, the following are avai- be located in the external perimeter walls of the building. lable as optionals: To provide some indications of possible solutions, Table –...

  • Page 12: Murelle Bf" Separate Air Inlet-Flue Outlet Pipes

    It is not allowed to replace SIME accessories with other “MURELLE BF” SEPARATE AIR devices. Some of the connecting systems that may be INTAKE-FLUE OUTLET PIPES adopted are shown in Fig. 12. The sum of the development of the air intake-flue outlet pipes enables a maximum distance of 16 m to be rea- ched without change of direction.
  • Page 13 2 Outlet pipe flange 6 Sectores diaphragm ø 38 3 Self-tapping screw 7 Air deflector code 6257504 Fig. 13/a TABLE 6 Murelle 20 BF Murelle 25 BF Sectors of diaphragm Total head loss Sectors of diaphragm Total head loss to remove...
  • Page 14 1 Separate-pipe kit 2 90° elbow MF with intake 3 Extension ø 80 4 Outlet terminal 5 Int.-est. ring kit 6 Intake terminal 7 45° elbow MF 8 Extension ø 80 with intake 9 90° elbow MF 10 Locking junction 11 Condensation outlet ø...

  • Page 15: Characteristics Of Feedwater

    7 Doubler fitting 1 Separate-pipes kit 8 Tile with articulated joint 2 90° elbow MF with intake 9 Roof outlet terminal ø 80 3 Extension ø 80 10 45° elbow MF 4 Int.-est. ring kit 11 90° elbow MF 5 Intake terminal 12 Extension ø...

  • Page 16: Murelle 20 Tx Ce Iono" Boiler Supply

    Fig. 16 2.11 “MURELLE 20 TX CE IONO” BOILER SUPPLY 2.11.1 Installation of “MURELLE 20 TX CE IONO” boiler The boilers are shipped in two separate packages: To install the boiler, proceed as follows (Fig. 17/a): 1) Boiler and 90° elbow, and 2) Smoke discharge pipe ø...

  • Page 17: Electrical Connection

    SIME. The electric power supply to the boiler must be 230 V - 50 Hz single-phase through a fused main swit- ch, with at least 3-mm spacing between contacts. You 2.12.1 Electric switchboard...
  • Page 18 2.12.2 “MURELLE 20R CE IONO” wiring diagram Line Neutral Main switch Room stat SM Heating flow sensor (blue) Fuse (T1,6A) Fuse (F50 mA) FM 11 programmer Ignition electrode (orange) Sensing electrode (white) EV1 Gas valve coil EV2 Gas valve coil 100°C safety stat...
  • Page 19 2.12.4 “MURELLE 20 CE IONO - 25 CE IONO” wiring diagram Line Neutral Main switch Summer/Winter switch Room stat D.H.W. sensor (red) SM Heating flow sensor (blue) Fuse (T1,6A) Fuse (F 50 mA) FM 11 programmer Ignition electrode (orange) Sensing electrode (white)
  • Page 20 NOTE: The room stat must be connected to the terminals 40-41 of the three-pole terminal strip after removing the link. Fig. 23 2.12.7 “MURELLE 20 TX CE IONO - MURELLE 20/25 BF CE IONO” wiring diagram Line Neutral D.H.W. sensor (red) SM Heating flow sensor (blue) Insuff.

  • Page 21: Electronic Board

    (“MURELLE meters (Section 3.4). 20 TX CE IONO - MURELLE BF” versions) have At start-up of each working cycle, after the period of slow tripped. ignition having a duration of approx. 8 sec, the boiler will –...

  • Page 22: Temperature Sensors

    In this case, the times elapsing between tur- ning off and subsequent re-ignition will depend on a The electronic board of the “MURELLE” boilers is equip- temperature difference of 8°C detected by the SM ped with the following devices: sensor (heating flow sensor).

  • Page 23: Interruption Of The Thermocouple

    2.18 SMOKE PRESSURE SWITCH “locks out”. “MURELLE 20 TX CE IONO - MURELLE BF” – Ignition electrode fails to spark Impurities and possible formations of condensate, which This may be due to there being a break in the wire to...

  • Page 24: Disassembly Of Outer Casing

    2.19 DISASSEMBLY OF OUTER CASING the slot-in pins located on the sides (3) and (4); – unscrew the screws (1) that fasten the sides to the To disassemble the outer casing, proceed as follows base and brackets of the smoke chamber; (Fig.

  • Page 25: Use And Maintenance

    3.1.1 Temperature adjustment of D.H.W. 3 Microswitch 7 Water pressure switch The “MURELLE” boilers (except for “20 R - 20 BFR” Fig. 28 models) are equipped with a potentiometer for adjusting the temperature of D.H.W. with a setting range from 35°C to 60°C.

  • Page 26: Gas Valve

    GAS VALVE The “MURELLE 20/25 CE - 20 BF CE” boilers are equip- ped standard with a HONEYWELL V4600N gas valve complete with a modulator screwed onto the pressure regulator (Fig. 30). 1 Modulator 2 EV1-EV2 coil 3 Pressure inlet downstream 4 Pressure inlet upstream Fig.
  • Page 27 – disconnect the electric power to the modulator; – set the knob of the D.H.W. potentiometer to the maxi- mum value and open the hot water tap; – ignite the boiler by operating the switch and turn the 1 Maximum pressure screw (2) keeping locked the nut (3) to arrive at the adjusting union minimum pressure value given in Table 8: to reduce...

  • Page 28: Adjustment Of Heat Output For Heating

    – close the gas cock; HEAT OUTPUT kW (kcal/h) POTENZA TERMICA kW (kcal/h) – in the “MURELLE 20 CE - 20 BF CE” versions, unscrew the interrupted thermocouple (6) and the pilot feed pipe Fig. 33 connection (3), and remove the ignition electrode (5);...

  • Page 29: Filter On Gas Pipe

    FILTER ON GAS PIPE nozzle (4); – slide out the burner unit (11); The gas valve used on the “MURELLE” boilers is fitted – replace the main nozzles (12) located on the burner standard with an inlet filter, which, however, is not able manifold (9), inserting the copper washer (10).

  • Page 30: Fault Finding

    3.10 FAULT FINDING FAULTS LIKELY CAUSES AND SOLUTIONS – Check that gas inflow is regular and that all air has Pilot fails to light, no discharge spark been purged from pipes. noted on electrode. – Check the 1.6 Amp fuse is sound. –...
  • Page 31 – Check boiler is clean. temperature. – Check boiler is sized in proportion to system. – Check electrical connections and whether electric In the “MURELLE BF CE” vers., with power is arriving. switch ON, fan fails to turn at min speed.
  • Page 32 – Replace electronic board. – Check whether connection pipe of smoke pressure In the “MURELLE 20 TX CE IONO” vers., the fan turns but the burner does not start. switch PF are obstructed and, if necessary, clean away impurities or condensate.
  • Page 33 Fonderie Sime S.p.A. - via Garbo, 27 - 37045 Legnago (Vr) Tel. 0442/631111 - Fax Serv. Commerciale 0442/631293 - Fax Serv. Tecnico 0442/631292...

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