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Marra Forni

10310 Southard Drive Beltsville, MD 20705 1.888.239.0575 [email protected]

STRUCTURAL BUILD OF OVEN / VENTING

A UL-listed grease or building heating appliance chimney installation (referred to as direct venting),

and Type I exhaust hood installed per NFPA 96 and UMC standards for Ventilation Control and Fire

Protection of Commercial Cooking Operations are the only two methods of venting permitted for

commercial Marra ovens. Of the two options, direct venting is more common, although an exhaust

hood is required in some areas (consult local ordinances). Venting must comply with ETL regulations.

For gas ovens, always ensure that there are no obstructions to the flow of combustion and ventilation,

including the cylinder enclosures. Please refer to your exhaust hood manufacturer’s guidelines for

inspection, maintenance and sanitation procedures.

A UL Listed Grease Duct/Building Chimney Heating Appliance

can be connected to the

chimney opening of the oven. A minimum 50v0 C.F.M.-listed power ventilator for restaurant exhaust

appliances is required. A minimum temperature rating of 300°F is required for the power ventilator.

Type I Exhaust hood standards for ventilation control and fire protection of commercial

cooking operations are as follows:

Steel baffle (NOT MESH) grease filters must be used and

placed at the rear of the hood. The following specifications must also be met:

• There must be at least 10” between the front of the oven face and the front of the hood.

• According to UMC there must be 42” between the oven heart and the face of the filter.

• The side of the hood must extend a minimum of 6” to either side of the oven door opening.

• If required, a type 1 hood must be placed above the cooking opening and set atop the oven.

Minimum hood dimensions are 36” wide and 37” deep, 22” high for Models 90 and 110, and 40” wide,

37” deep and 22” high for 140 and 150.

Duct Velocity = 1500-2500 FPM - Vol.: 800-1000 CFM

Refer to Lennox Chimney Supply instructions for specific Direct Venting installation requirements. A

field-built duct, constructed and installed to NFPA 96 or International Mechanical Code grease duct

specifications, may also be used.

Volume: 150-200 CFM

www.SecurityChimneys.com

From Inside to Outside:

- 8 cm thick bricks layered, wrapped in mesh

- 3 cm refractory mortar sprayed over mesh

- 4 cm Fyrewrap insulation

- 6 cm Thermafiber mineral wool insulation

- 3 cm refractory mortar
- 6 cm refractory brick

- 1 cm refractory mortar

- 6 cm refractory brick

- 3 cm Thermafiber mineral wool

- 4 cm Fyrewrap insulation

- 2 mm metal

Содержание Traditional

Страница 1: ...Marra Forni Traditional Installation OperationManual 10310 Southard Drive Beltsville MD 20705 Bus 1 888 239 0575 Fax 240 667 7991 info marraforni com marraforni com ...

Страница 2: ...Updated April 2013 Scan to visit www marraforni com DO NOT THROW THIS MANUAL AWAY REVIEW WARRANTY BEFORE INSTALLING OVEN ...

Страница 3: ...the installation operating and maintenance instruc tions thoroughly before installing or servicing this equipment A major cause of oven related fires is failure to maintain required clearances air spaces to combustible materials It is of utmost importance that this oven be installed only in accordance with these instructions Never use this appliance as a space heater to heat or warm the room Doing...

Страница 4: ... its individual shut off valve must be disconnected from the gas supply piping system during any testing of that system at pressures in excess of 1 2 psi 3 45 kpa 2 the appliance must be isolated from the gas supply piping system by closing its individual manual shutoff valve during any pressure testing of the gas supply piping system at test pressures equal or less than 1 2 psi 3 45 kpa Requireme...

Страница 5: ...ioned horizontal steel tubes Proceed to lift slowly and move oven as needed Use 21 wide pallet jack for the Model 90 For all other models use regular pallet jacks that meet the necessary capacity Before attempting to lift or move the oven ensure that the forklift capac ity can accommodate the weight of the oven and that the forks are long enough to securely lift the oven with BOTH horizontal steel...

Страница 6: ...th direct venting requires a minimum height of 83 inches All combustible sidewalls projecting beyond the front of the oven opening must be be given a clearance of 30 from the side of the oven door opening and 36 from the front of the oven door as shown 3 OPTIONAL After completing steps 1 3 drill holes for the anchor bolts at a minimum of 3 inches deep using the base plates as a guide Insert Ramset...

Страница 7: ...ntroller Duct Regular cleaning and maintenance of the exhaust system are necessary to prevent hood and or duct fires The frequency of inspection and cleaning will depend upon hours of use and type and moisture content of the wood used for fuel Avoid flue fires by maintaining a set cleaning schedule Door This is used for heat retention Spread out the coals before putting the door in place Marra For...

Страница 8: ...andards for ventilation control and fire protection of commercial cooking operations are as follows Steel baffle NOT MESH grease filters must be used and placed at the rear of the hood The following specifications must also be met There must be at least 10 between the front of the oven face and the front of the hood According to UMC there must be 42 between the oven heart and the face of the filte...

Страница 9: ...d duct shafts Note The chimney must be installed in accordance with the manufacturer s grease duct installation instructions To maintain the ETL listing of the oven the system must be a UL listed fire wrapped grease duct in either stainless steel black iron or a listed building heating appliance duct Diameter of inside grease duct by oven size 90M 6 duct 1 10M 8 duct 1 40M 8 duct 1 50M 8 duct Marr...

Страница 10: ...ES FOR GAS AND WOOD BURNING OVENS Improper Installation The combustion is diverted from the oven burner The room is open to a low pressure area therefore the exhaust is pulled backwards through the oven burner Proper Installation Build a room specifically for the oven that will isolate the oven from the low pressure air but leave an open air intake area ...

Страница 11: ...BUSTION AIR INTAKES FOR GAS AND WOOD BURNING OVENS Improper Installation DO NOT add a vent to increase air supply This will disrupt air flow to the oven as the air moves from normal to low pressure Improper Installation If the air intake area is blocked insufficient combustion will result in burner malfunction and poor oven performance ...

Страница 12: ...ce on the burner side for regular service The service area must be within the same wall where the face of the oven is located IMPORTANT PROCEDURES AND INSTALLATION FOR COMBUSTION AIR INTAKES FOR GAS AND WOOD BURNING OVENS Proper Installation Apply non combustible board in between the oven s facade and the ceiling as well as a minimum of 6 on both sides of the facade ...

Страница 13: ...roducing appliance and may cause severe burns if the inside is touched 2 This unit is designed to be used as a gas or wood fired oven Only pizza and or bread products should directly touch the hearth Please refer to the manufacturer s operation guidelines for instructions on cooking other foods 3 DO NOT OVER FIRE If flames spill out from the door opening or the oven temperature exceeds 1000 F you ...

Страница 14: ...he oven NEVER close the oven door fully unless there is an emergency 5 Use only non combustible hearth tools and cooking implements inside the oven we offer an entire line of Marra Forni pizza making tools 6 NEVER ELEVATE THE FIRE Fires should always be built directly on the hearth WOOD FIRE MAINTENANCE INSTRUCTIONS WARNING READ ALL INSTRUCTIONS CAREFULLY IMPROPER USE OR MAINTENANCE OF THIS APPLIA...

Страница 15: ...eanings are needed Increases in the rate of the creosote and grease accumulation can be caused by a change in the use of the oven changes in the type or moisture content of the firewood that you are using etc Clean the oven exhaust hood and grease filters on a daily basis Grease filters can be removed and cleaned in a dishwasher or sink For inspection maintenance and cleaning of the venting system...

Страница 16: ...control knob to Off TO FIRE OVEN WOOD 1 Turn On exhaust fan and make up blowers if applicable 2 Place a firestarter block on the hearth with a small amount of wood and kindling overtop Light your firestarter and be sure that you never use more than four pieces of wood CAUTION FLAMMABLE LIQUIDS SUCH AS GASOLINE TYPE LANTERN FUEL KEROSENE CHARCOAL LIGHTER FLUID AND SIMILAR PRODUCTS SHOULD BE KEPT AW...

Страница 17: ...rs 1 Clean the oven regularly with recommended cleaning agents Remember to disconnect the power supply from the gas burner control box before any cleaning or servicing 2 To remove burner for cleaning 1 Disconnect cable from spark igniter 2 Unscrew the fitting for the gas supply line fitting is located near burner assembly The gas supply line connects the gas valve to burner assembly 3 Tilt the opp...

Страница 18: ... the door DO NOT use cleaning agents in the oven SHUTTING DOWN THE OVEN 1 Turn the main power to the Off position 2 If you are shutting down the oven for the night turn off the gas control valve to prevent gas buildups Save these instructions for future reference If you have questions call 1 888 239 0575 GAS BURNER SPECIFICATIONS Gas ovens feature an EC200 gas burner that maximizes usable deck spa...

Страница 19: ...5 info marraforni com GAS BURNER FULL SPECIFICATIONS Below are the full factory specifications for the type of burner used on Marra ovens This gas burner features a 3 4 NPT connection and is capable of 200 000 BTU h output It is UL and CUL listed and works with both natural gas and propane models ...

Страница 20: ...p to four seconds and enter the thermoscan state Maintenance The motor features permanently lubricated ball bearings and requires no routine oiling or maintenance Check burner flame periodically A proper natural gas flame will appear blue at the burner face with orange yellow tips If the flame is too rich it will appear billowy and yellow with hazy tips If too lean it will appear short and all blu...

Страница 21: ... ON 5 Reset light is ON 5 Check the low flame regulator You may need to adjust the low flame regulator to make sure that sufficient gas is reaching the oven 6 The control box will not turn on 6 This means that no power is connected to the oven Check for blown fuses on the back of the control box If the control box still does not turn on please contact a Marra Forni representative 7 The display rea...

Страница 22: ...s for 115V White and Black for 230V B Confirm that line power neutral L2 White is connected to motor neutral wires Orange and Black wires for 115V Orange and Blue wires for 230V If line power is being delivered to the blower motor and it is not running replace the motor 6 With blower motor running confirm that 24V power is present at PSW terminal on the electronic burner control and Ground If powe...

Страница 23: ...23 Marra Forni 10310 Southard Drive Beltsville MD 20705 1 888 239 0575 info marraforni com GAS BURNER PARTS ISOMETRIC VIEW ...

Страница 24: ...l dynamically and statically balanced to assure low noise levels and vibration free operation Motor It features a split capacitor motor which is totally enclosed Class H insulated IP54 Protection Class Sealed ball bearings Variable Speed Thermal overload protection Standard Equipment 2 x4 or 4 x4 junction box with cover and conduit Bird Screen Optional Equipment 5amp or 8amp fan speed control Gask...

Страница 25: ... 8 Power Ratings kW 0 025 0 10 0 16 0 35 Weight lbs 28 46 60 86 kg 12 18 26 35 Dimensions A in 9 85 11 03 13 20 14 97 mm 250 280 335 380 B x B in 12 21 15 37 19 11 22 85 mm 310 390 485 580 C x C in 9 46 12 22 15 17 18 32 mm 240 310 385 465 D Ø in 8 63 10 72 13 04 14 26 mm 219 272 331 362 E in 2 76 3 15 3 94 4 53 mm 70 80 100 115 Temperature Rating Interm 575 F 300 C Cont 482 F 250 C Motor Starter ...

Страница 26: ...Canada when denoting compliance with nationally recognized standards such as ANSI IEC UL and CSA This mark indi cates that the product has been tested to and has met the minimum requirements of a widely recog nized concensus U S product safety standard that the manufacturing site has been audited and that the applicant has agreed to a program of periodic factory follow up inspections to verify con...

Страница 27: ...ding but not limited to Verace Pizza Neapolitana all of the American Pizza Team Whole Foods and the Tony Gemignani School of Pizza 6 Marra Forni forked dough mixers fold the dough rather than mixing it This prevents the dough from becoming heated from the friction of being mixed guaranteeing you a cleaner dough and a fresher tasting end result Let your oven cook your dough not the mixer 7 Our comp...

Страница 28: ......

Страница 29: ...______________ Product Serial Number s ______________________________________________________________ Description of Equipment ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ Thank you for choosing the Marra Forni line to fulfill your restaurant equipment nee...

Страница 30: ......

Страница 31: ...Scan to visit www marraforni com DO NOT THROW THIS MANUAL AWAY REVIEW WARRANTY BEFORE INSTALLING OVEN ...

Страница 32: ...10310 Southard Drive Beltsville MD 20705 Bus 1 888 239 0575 Fax 240 667 7991 info marraforni com marraforni com ...

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