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ENGLISH 

 
 

2. PRODUCT DESCRIPTION 

 
This model of boiler is equipped with an innovative and patented biomass burner that is capable of burning 

not only wood pellets, but also biomass (maze, grape seed, etc...). 
An  automatic  cleaning  system,  controlled  by  an  electronic  control  box,  always  keeps  the  burner  clean  and 
obtains great efficiency and reliable use. The modulating  operation varies according to the boiler temperature 
that  has  been  set  and  results  in  optimal  environment  heating.  During  initial  start  up  phase  (approximately  10 
min.)  the  burner  automatically  fills  with  fuel,  while  the  resistors,  heating  up,  ignite  the  flame.  Once  flame  has 
been  detected  by  the  combustion  fume  sensors,  normal  operation  begins  and,  thanks  to  the  microprocessor, 
fuel  intake  can  be  changed,  obtaining  flame  modulation.  The  electronic  box  controls  continually  check 
temperature  sensors,  electric  motors,  and  safety  devices,  in  case  of  anomalies,  it  will  stop  functioning  and 
signal it on the display (see alarm code paragraph). Room heating is guaranteed by a circulator mounted inside 
the  boiler  that  will  start  once  the  temperature  reaches  55°C.  Below  this  temperature  the  boiler  activa tes  the 
anti-condensing function, therefore stopping the circulator. 
Production of domestic hot water is guaranteed by a motorised deflector valve, also fitted inside the boiler, and 
managed by the boiler probe that signals the position and ensures the hot domestic water boiler has priority.  
 
 

3. PELLET QUALITY 

 

 

There are various types and qualities of pellets on the market and it is important that the ones you use are not 
of abysmal quality. A poor, cheap quality pellet could  contain glues, resins or chemical substances that could 
seriously  jeopardise  the  functioning  and  the  safety  of  the  product,  by  inciting  blockage  of  ashes  and  smoke 
discharger,  forming  corrosive  gas,  reducing  machine  performance,  release  polluting  substances  into  the 
atmosphere and window incrustation.  Regulations on this matter have established that products using this type 
of fuel must be fed with good quality pellets, compact and not very powdery. We recommend that you ask your 
retailer  for  a  suitable  type  of  pellet,  that  are  in  compliance  with  DIN51731  standards  or  M7135  standards 
including any updates. 

The  characteristics  of  wood  pellet  that  should  be  used  are:  of  a  6÷8  mm  diameter,  approx.  5÷20  mm  length, 
have an 8% humidity and a heating potential of 18200 KJ/Kg.  
The manufacturer does not assume any responsibility for the use of poor quality pellets and therefore 
the is non responsible if the boiler malfunctions as a result
.  

 

Store pellets at least 1 metre away from the boiler in a dry and sheltered part of the home. 

 

SETTING THE FUEL 

Before switching the appliance on, select on the display the kind of fuel you are going to use:  
-  Select “fuel 1” to use certified wood pellets (DIN PLUS / ö-Norm M7135) or good quality wood pellets having 

a low humidity value (<13%) and a low ash residual. 

-  Select “fuel 2” to use non-certified  wood pellets (for example made with bark and branches) having a high 

humidity value (>13%) and a high ash residual.   

-  Select “fuel 3” to use a corn (humidity max 15%)  mixed with wood pellets. 
-  Select  “fuel  4  ”  to  use  a  biomass  fuel:  corn  mixed  with  wood  pellets,  finely  chopped  (

4mm  minimum)  or 

whole  olive  pits,  almond/hazelnut/pine  nut  husks  ( 

4mm  minimum),  pelletized  vine  pruning,  cherry  pits 

(

4mm minimum), miscanthus pellets, agripellets.  

-  List “fuel  5” remains available for the technician/dealer to set particular fuels that are not mentioned  in the 

above list.  

 

In order to obtain a correct functioning and a high efficiency of the stove, it is necessary to select 
the most suitable fuel list. 

 

In order to obtain a correct functioning and a high efficiency of the stove, it is necessary to select 

the  most  suitable  fuel  list.  All  chopped  fuels  (olive  pits,  husks,  etc..)  must  have  a  minimum 

diameter of 4mm. 

 

Summary of Contents for MURANO 15

Page 1: ...INGLESE INSTRUCTION MANUAL VENEXIA 15 18 21 25 MURANO 15 18 ...

Page 2: ...t the end of its working life the product must not be disposed of with household waste but be taken to a special differentiated waste collection center or to a dealer providing this service To dispose of the device separately allows to avoid potential negative consequences for the environment and human health deriving from inappropriate disposal and it promotes recycling of the materials of which ...

Page 3: ...nt smells during functioning may be caused by the type of pellets used Possible noises during functioning are normal caused by the settlement of assembled parts Store bags of fuel at least 1 metre away from the boiler in a dry and sheltered part of the home DO NOT EXCEED THE PERCENTAGE OF 60 OF CORN IN THE MIXTURE WITH WOOD PELLETS Other finely chopped fuels for example olive pits shells etc can b...

Page 4: ...orrosive gas reducing machine performance release polluting substances into the atmosphere and window incrustation Regulations on this matter have established that products using this type of fuel must be fed with good quality pellets compact and not very powdery We recommend that you ask your retailer for a suitable type of pellet that are in compliance with DIN51731 standards or M7135 standards ...

Page 5: ...1 Automatic air vent 2 Smoke discharge Ø 80mm 3 Safety pressure switch 4 System return 3 4 5 Boiler return 3 4 6 Circulator 7 Safety valve discharge 3Bar 8 Boiler discharge cock 9 Expansion tank 10 System flow 3 4 REAR VIEW VENEXIA 21 25 VENEXIA MURANO 15 18 ...

Page 6: ... VENEXIA 15 18 Model 630 620 scarico fumi output tube sortie fumées D 80mm presa aria esterna external air intake prise d air extérieur 550 620 scarico fumi output tube sortie fumées D 80mm presa aria esterna external air intake prise d air extérieur ...

Page 7: ...ER wood pellet fuel kW 13 6 15 3 18 0 22 1 COMBUSTION EFFICIENCY EN303 5 wood pellet fuel 93 3 92 5 95 0 93 4 CO 13 O2 RATED POWER g Nm3 0 16 0 21 0 07 0 08 CO 13 O2 REDUCED POWER g Nm3 0 27 0 27 0 32 0 32 PP 13 O2 mg Nm3 12 2 11 8 12 1 11 4 FUEL wood pellet biomass wood pellet biomass wood pellet biomass wood pellet biomass PELLET TANK CAPACITY Kg 21 21 32 32 HEATED VOLUME m3 180 430 180 470 300 ...

Page 8: ...HE SAFETY VALVE DRAIN AND BRING IT OUTSIDE THE BOILER A DIRT SEPARATOR WITH MAGNET MUST BE INSTALLED ON THE RETURN CIRCUIT TO PROTECT THE BOILER S INTERNAL COMPONENTS AS THE ELECTRONIC CIRCULATOR FROM IMPURITIES AND FERROUS PARTICLES ALTERNATIVELY WE RECOMMEND YOU TO USE A HEAT EXCHANGER TO SEPARATE THE BOILER S WATER FROM THE CIRCUIT S WATER INSTALL AN ANTI CONDENSATION VALVE WITH SETTING AT 55 C...

Page 9: ...mestic hot water production layout CIRCUITO RISCALDAMENTO COLLETTORE USCITA ACQUA CALDA SANITARIA ENTRATA ACQUEDOTTO CARICO IMPIANTO CIRCOLATORE HEATING SYSTEM HOT WATER OUTLET COLD WATER INLET DOMESTIC HOT WATER TANK PUMP CIRCUITO RISCALDAMENTO COLLETTORE CARICO IMPIANTO CIRCOLATORE PUMP HEATING SYSTEM ...

Page 10: ...HE SANITARY WATER TANK VALVE CHECK VALVE PRESSURE REDUCER SAFETY VALVE THERMOMETER EXPANSION TANK FILTER Y SEPARATOR WITH MAGNET WATER SOFTENER PRESSURE GAUGE AIR VENT LEGEND OF SYMBOLS BOILER DELIVERY HOT WATER DELIVERY RETURN DELIVERY HOT WATER RETURN VALVE ANTI CONDENSATE CIRCUITO RISCALDAMENTO CARICO IMPIANTO CIRCOLATORE MIN 300LT PUFFER STORAGE ENTRATA ACQUEDOTTO USCITA ACQUA CALDA SANITARIA ...

Page 11: ...nal contact must be covered with tiles or at least well insulated The stack must be wind resistant with an internal section that is equal to that of the chimney a useful section at least twice the size of the chimney and protect from any rain coming in Any other building plants or other obstacle that are higher than the roof must be positioned at least 3 m away from the stack see fig 4 Whenever us...

Page 12: ...nnect it to the boiler using a T pipe connection using a ø 80 ø 100 pipe fitting see fig 8 FLUE DIAMETER OPINION Tube length less than 5 m 80 mm Correct Tube length more than 5 m 100 mm min Mandatory For installations at an altitude of more than 1200 m a s l 100 mm min Recommended Note for each 90 curve add 1 m and for each 45 a dd m The lengths indicated on the table are only relevant for the ver...

Page 13: ... plants wood or elements that could be visually damaged walls windows within 3m of the flue WARNING Seeing that regulations regarding installation of pellet fuelled boilers are constantly being updated ask ones installer for eventual changes 9 OXIDISING AIR INTAKE Oxidising air can be taken from the atmosphere as long as there is sufficient ventilation otherwise it is necessary to take it from the...

Page 14: ... plaque electric power nominal voltage etc that the plant has a sufficient earth connection according to nominal regulations in vigour earth connection is obligatory by law the power cable should never at any point overheat 50 C above room temperature If a direct connect ion is desired it is necessary to use an omnipolar switch with a minimum opening between contacts of 3mm that has been designed ...

Page 15: ...FAN ENCODER CLOCK BATTERY BOILER CIRCULATOR DIVERTER VALVE IGNITION RESISTOR CRUCIBLE MOTOR COMBUSTION FAN DISPLAY LOAD AUGER MOTOR MIXING AUGER MOTOR BOILER PRESSURE SWITCH AIR PRESSURE SWITCH BOILER SAFETY THERMOSTAT AUGER SAFETY THERMOSTAT CRUCIBLE SENSOR MOTOR MIXING AUGER MOTOR SENSOR HOT WATER PROBE SMOKE PROBE UNUSED UNUSED UNUSED UNUSED ROOM THERMOSTAT BOILER PROBE L N ACCEND COCLEA MISC C...

Page 16: ... at least 70cm around the sides of the boiler to ensure easy maintenance Should the machine be installed close to flammable or combustible walls keep a safe distance of 30cm from the rear and sides of the machine Avoid leaving any type of flammable or combustible materials within 1m of the heat waves from the glass window situated on the front of the machine Check for a correct level of combustibl...

Page 17: ...trols phase with fire pot cleaning before loading fuel Charged Start up phase with fuel load in the burner while supplying power to the resistors at the same time Pause Pause while awaiting flame St fire Waiting phase during which the start up must take place Stabil Stabilisation phase after the flame has started with a medium size load of fuel fire Burner operational adjustment phase where power ...

Page 18: ...reate an homogenous mixture The menu LOAD allows to vary the quantity of combustible to be loaded and it is subdivided into 3 levels of increase and 3 levels of decrease each level consists of 0 2 seconds therefore a total of 0 6 seconds Any variation made remains in permanent memory and it is simultaneously programmed on all 6 power levels of the stove Before selecting on the display the type of ...

Page 19: ...r yes ON00 00 OFF00 00 ON00 00 OFF00 00 ON00 00 OFF00 00 ON00 00 OFF00 00 ON00 00 OFF00 00 Press to modify Press to modify Press to modify Press to modify Press to modify Press to modify Press to modify Press to modify Press the key to confirm Press the key to modify Press the key to modify Press the key to confirm Press the key to confirm Press the key to confirm Press the key to confirm Press th...

Page 20: ...afety thermostat clean the inside of the stove reset the thermostat and restart the stove Thermostat auger Intervention on the part of the fuel auger safety thermostat clean the inside of the stove reset the thermostat and restart the stove Pressure switch Air pressure regulator is not working contact an authorised technician system error Internal error of the electronic control box turn stove off...

Page 21: ...ner fig B using the flexible pipe supplied fig E to connect to your vacuum cleaner To remove any encrustation scrape the inside of the wheel holes fig C with the tip of the supplied accessory fig F remove and empty as well the collecting container placed underneath the cast iron wheel Finally vacuum the air combustion duct fig D behind the burner Having performed the cleaning make sure to replace ...

Page 22: ...ch a way as to drop all the ash in the ash drawer below At this point remove the ash drawer taking care to remove as well all of the ash on the bottom of the boiler and above the cavity of the exhaust motor Fig B to do this connect the supplied flexible hose to your vacuum cleaner N B for the model Murano use the appropriate tool supplied HEARTH DOOR SEAL Frequently check the conditions of the sea...

Page 23: ... and the entire flue must be checked and cleaned at least once a year We recommend the use of a specialised technician for a thorough and professional cleaning COMBUSTION AIR INTAKE Monthly inspect the air intake tube positioned under the start up resistors to ensure it is not blocked by any foreign material If required remove or suck out the dirt GENERAL END OF SEASON CLEANING Every two months em...

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