Rizzoli STP Instructions Manual
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Rizzoli STP Instructions Manual

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  • Page 1 Instructions...

  • Page 3: Table Of Contents

    Instructions Installation Heating system Control unit Circulation pump Use Maintenance What to do if... Warranty...

  • Page 4: Instructions

    The use of economic and ecologic combustibles, the sweet warm of natural fire, the sweet fragrance of the wood of our forests are the qualities that make indispensable wood fired thermal cookers in every house. Your choice fell upon a Rizzoli thermal cooker, result of a tradition started in 1912 when Carlo Rizzoli began the production of wood fired thermal cookers with the typical style of the valley in the dolomites.

  • Page 5: Installation

    19 Starting lever 20 Handrail 21 Plate 22 Chimney connection 23 Disc or circles Picture 1 INSTALLATION GENERAL NOTES The thermal cooker must be installed by experienced people according to the specific technical laws. In particular it is important to pay attention to the connection to an appropriate heating system and to the chimney, which must be suited and dimensioned according to the device. Also the connection to AC power must be done in order to power up the control unit, the circulation pump and to make the oven light working. When placing the thermal cooker, you must pay attention to prevent damages. Do not drag the thermal cooker, move it keeping it lifted from the floor. The thermal cooker must not be moved making effort on the handrail or on the handles. In case of furniture near the thermal cooker, be sure to maintain the minimal safety distances in case of inflammable materials or sensible to high temperatures (see attached technical sheet). If necessary, Rizzoli produces spacers for thermal cookers framed into furniture. The device must be installed on a floor with adequate load capacity. If the existing building does not satisfy this requirement, further actions shall be considered (for example using a plate do distribute the load). In case of floor made of inflammable materials it is necessary to put a fire-proof protection on the floor in front of the fire door. The protection must extend for a minimum of 50 cm in front and for a minimum of 30 cm sideways over the fire door. In case of thermal cookers to be enclosed near not heat sensible materials, it is necessary to maintain a minimum distance of 1-2 mm to allow the expansion of the materials when the temperature changes. It is not recommended to mount cabinets upon the thermal cooker. If this happens, it must be guaranteed the resistance of the cabinet to the heat produced by the thermal cooker: in this case, a minimum distance of 60 cm from the plate must be respected. In case of aspiring hood upon the thermal cooker, it is mainly important that the hood can suffer high temperatures. Rizzoli is specialized in the production of hoods to be used with thermal cookers. During the installation, be sure to not obstruct the ventilation holes on the frame: the occlusion of these holes would cause a loss of the isolation capacities of the thermal cooker and in general of its correct working. CHIMNEY Chimney has a main importance for the correct working of a wood fired thermal cooker. Wood...
  • Page 6 Before connecting the thermal cooker, check that the flue outlet not used is plugged, otherwise use the accessories given together with the cooker for this purpose. Picture 5 – Predisposition of the flue outlet (STP).
  • Page 7 Picture 7 - Samples of correct and incorrect connection to the chimney hood. 2.9 FLUE OUTLET ON THE SIDE (OPTIONAL) On demand, STP can have the flue outlet on the right side. The connector is extractable. To install it correctly, it is necessary to remove the cooking plate. Now, the connector must be completely in- serted inside the wood fired cooker or the chim- ney, keeping the fixing buttonhole on the same side of the cooker. Then, you can place the wood fired cooker, extract correctly the connector so that it connect the cooker with the chimney. Fi-...
  • Page 8 Picture 11 – Position of the rear hole for the passa- Picture 12 – Position of the lower hole for the ge of the air intake conduct. Dimen- passage of the air intake conduct.
  • Page 9 Picture 14 – Position of the terminal board for the Picture 15 - Terminal board for the connection to connection to the network. the network: 1. Line 2. Neutral 3. Earth. 2.14 HANDRAIL PREDISPOSITION The STP thermal cookers are supplied as stand- 40mm ard with the front handrail. It is possible to request the accessories to add the handrail on one or both sides. To do this, unscrew 40mm...

  • Page 10: Heating System

    REMOVING THE BOILER SIDE To make the installation easier, in STP thermal cookers the boiler side can be removed also after the placement of the device. The internal wall of the thermal cooker has an hole that allows to access the vain under the boil- er tank and so makes the connection of the pipes easier. To remove the side, unscrew the 4 screws on the front of the thermal cooker and unhook the side from behind, as indicated in the picture.
  • Page 11 application of the anti-condensation valve is always recommended for each type of system. PRODUCTION OF SANITARY HOT WATER To produce instant sanitary hot water it is neces- sary to let throwaway cold water enter through the dedicated connector. The correspondent exit connector will be connected to the sanitary sys- tem. Incoming cold water pressure must not be higher than 2,5 bar, if the water comes directly from the waterworks generally it is necessary to install a valve for the reduction of the incoming pressure. In addition, it is recommended to install on the sanitary circuit also an overpressure secu- rity valve set to 6 bar. If in the sanitary hot water circuit is present a non-return valve, it might be useful to insert a small expansion tank. If you do not mind to produce sanitary hot water with the thermal cooker it is not necessary to fit the connectors and you have just to cover them.
  • Page 12 WARNING! Using the thermal cooker without water or with few water in the tank does not make possible the correct working of the device: it might cause not repairable breakings and compromises the duration of the boiler. 3.10 EXPANSION TANK Every closed hydraulic circuit subjected to variations of temperature must have a device which allows the variation of the fluid contained. The system inte- grated in the thermal cooker with open expansion tank works for the boiler and the internal tank of the thermal cooker. The secondary circuit for the heating system, being separated, requires a dedicated and well dimensioned according to dimensions of the thermal system expansion tank, to be installed by a technician. The expansion tank for the heating system may also be closed. When connecting to an existent system or when there is another heat generator, the expansion tank might exist and be ready for use. 3.11 SAFETY In every solid combustible based boiler it is not technically possible to break up immediately the combustion as it happens for the liquid/gas combustible based boilers when necessary. Because of this there is the need to drain always the heating produced, even if the system does not require it or in case of lack of electricity: when this happens, in STP thermal cooker the water may come to the boil but the generated steam is ejected by the safety discharge. STP thermal cooker shall be intended as a solid combustible generator endowed with an internal primary circuit with natural circulation endowed with open expansion tank and a heating exchange system with two secondary circuits separated from the primary one: one for heating and one for the production of sanitary hot water. For this reason, the thermal cooker can be installed in total security as indicated in the referring laws for what deals with open expansion tank installations,...
  • Page 13 considering that in this case are already present these safety devices: open expansion tank, thermometer, acoustic alarm. The secondary circuit may be installed with closed expansion tank, without need to make a thermal discharge system with serpentine inside the boiler. 3.12 CONNECTION IN PRESENCE OF ANOTHER HEAT GENERATOR The thermal cooker may be easily matched also to another heat generator. It is recommended to contact a technician or an experienced installer in order to plan a duly system. It is necessary to mind that the thermal cooker must have the precedence on every other heat generator, because when using solid combustible it is not technically possible to break up immediately the combustion if necessary. This can be managed manually but it can also be automatic, using the advanced features of the control unit of the thermal cooker. With the correct electric connections, the control unit can manage the working of the other heat generator for both heating and production of sanitary hot water. 3.13 CALCAREOUS WATER Hard water with high residual saturation may create deposits inside the water circuits. The continuous use in these conditions may damage the device. In these cases, it is recommended to install a softener upstream the entrance of the water inside the thermal cooker, to be chosen according to the features of water. After an extended use of the device, it could be necessary to make the maintenance of the serpentines when showing calcareous deposits on their surfaces. In this case it is suggested to empty the system, removing the serpentines and to proceed to the mechanical cleaning of them. 3.14 SACRIFICIAL ANODE Inside the tank, there is a magnesium sacrificial anode, which prevents the corrosion due to electro-chemical reactions or wandering currents inside the boiler. When this happens the anode corrodes itself to save the material with whom the boiler is covered. The sacrificial anode must be controlled at least once a year and must be replaced when the diameter is shorter than 10 mm. The anode is just screwed on his support and the replacement is easy and fast. It is recommended to pay attention that the anode is not in contact with the exchange serpentines. 3.15 EXAMPLES Here are some examples of possible system realization. These schemes are just valid as example and must not be used in the making of the system. Ask always a thermal technician for an installation that best suites your needs. Picture 24 – Simplified installation scheme. CAPTION Hot water Non-return valve Valve for pressure reduction...
  • Page 14 VSP T Picture 25 – Simplified installation scheme. VSP T (6 BAR) VALV Picture 26 – Simplified installation scheme.

  • Page 15: Control Unit

    CONTROL UNIT PRINCIPLE OF OPERATION The control unit checks the cooker stove devices and some external devices that may be present in the heating system. Basically the control unit detects the boiler water temperature and based on the achievement of the programmed temperatures it activates or not the devices to which it is connected. In addition, the control unit performs some additional safety and control functions. Scrolling/Increase ON/OFF Test Pump1 Menù exit Detectors menu Menù entrance Scrolling/Decrease Detectors menu Main screen Temperature detector S1 Detector S1 displayed P1 outlet activated Detector S2 displayed P2 outlet activated Level switch P3 outlet activated P4 outlet activated ON: Flowmeter closed.
  • Page 16 FUNCTIONS OF THE UNIT Basically, the electronic unit checks the working of the heating system; in addition, it has also other auxiliary and safety functions. Main function - The unit reads the water temperature of the boiler, when it exceeds the set temperature, the unit starts the circulation pump of the heating system. When the temperature goes under the set value, the pump stops, allowing the temperature to go up again. Secondary functions - When the temperature exceeds the set values (A02, A03), the correspondent clamps activate (Valve, Boiler integration) and then the potential external connected devices. According to the installation, they could not deal with the normal use of the cooker stove. Sanitary function - When the sanitary hot water function is required, the presence of the liquid flow is detected, so the heating system pump stops and gives prevalence to the sanitary hot water. The pump restarts it the temperature exceeds the temperature set as safety thermostat. Alarm function - If the temperature exceeds the set value for the alarm thermostat, an acoustic and visible signal will be activated. Pushing any button will deactivate the acoustic signal for 5 minutes. Level switch function - If the level of the water in the boiler decreases under the minimum value, the S3 indicator will turn on: it will be necessary to add water in the boiler tank. The indicator turns off when the level of the water is restored. Standby function - If the control unit is off and the temperature exceeds the value set as safety thermostat, the control unit will automatically start and turns on the pump. Antifreeze function - If the temperature decreases under the value set as antifreeze thermostat, the circulation pump is activated according to the set intervals. The screen indicates ICE symbol. Pump anti-block function - After a prolonged period of inactivity of the circulation pump, it is activated for a limited time so as to keep the whole system in perfect efficiency. The display indicates the bLP symbol. Test pump function - The continuous pressure on push button K3 forces the activation of the circulation pump. The screen indicates tSt1 symbol. INSTALLER MENU Changing the settings in the installer menu is the sole responsibility of expert personnel; changing these parameters could compromise the correct operation of the appliance. Symbol Description Standard value...

  • Page 17: Circulation Pump

    Connections Function Connection to be done Kind of contact Electric feeding Always 230 V AC ~ 50 Hz Internal circulation pump feeding Always 230 V AC ~ 50 Hz External 3-way valve control for sanitary hot water Only when necessary on the terminal board 230 V AC ~ 50 Hz 5-6-7 External generator control or system thermostat Only when necessary on the terminal board Contacts in free exchange 8-9-10 11-12 Not available 13-14 Boiler water temperature detection Always Range 0 - 100 °C Sanitary hot water production control – flowmeter Always Consent ON/OFF 15-16 Boiler water level control Always Consent ON/OFF 16-17 Table 5 – Electric connections control unit. Picture 28 – Electric connections control unit. CIRCULATION PUMP RECOMMENDATIONS • Commissioning by qualified personnel only!
  • Page 18 ADJUSTMENT MODES CONSTANT SPEED Recommended for systems with stable resistance which require a constant flow. The pump is constantly operating at the reset fixed speed, base on the head choice. Q/m3/h Q/m3/h -7.5III Pro -5m -7.5III Pro -5m -7.5III Pro -6m -7.5III Pro -6m -7.5III Pro -7m -7.5III Pro -7m -7.5III Pro -7.5m -7.5III Pro -7.5m Picture 30 - Flow-head curves graph. Picture 31 - Flow-power curves graph. PWM EXTERNAL CONTROL Unavailable.

  • Page 19: Use

    LED FAULTS AND DIRECTIONS WARNING! Repair failures and electrical connections should only be carried out by qualified specialist electricians. The green light flicks by failure. Failure code Failure description Over voltage protection, re-start the pump after voltage resumes normal (overvoltage setting: 270 ± The gear light flashes once 5V). Under voltage protection, re-start the pump after voltage resumes normal (undervoltage setting: 165 The gear light blinks twice ± 5V). The gear light blinks three times Over-current protection, re-start the pump after 8 seconds. The gear light blinks four times Phase loss protection, re-start the pump after 8 seconds. The gear light blinks five times Block protection, re-start the pump after 8 seconds. The gear light blinks six times Light-load protection, re-start the pump after 8 seconds. Over-temperature protection, re-start the pump after ambient temperatureresumes to operation The gear light blinks seven times range for 5 seconds. Overheat protection, in the rated voltage, frequency, high temperature environment, high temperature water operation, IPM module surface temperature is higher than 120 ± 5 °C, the pump is reduced to 0.5 times of rated power operation, the temperature is lower than 115 ± 5 °C, the pump returns to normal operation.
  • Page 20 Before lighting the fire, it is necessary to turn on the control unit by pushing the switch on/off for few seconds. In order to allow an easier lighting with cold chimneys, STP thermal cooker is endowed with a starting key ruled by a rod, extracting the rod the key opens. Thanks to this device, it is possible the direct connection between the combustion chamber and the exhaust-pipe: in this way, the result is a better draught.
  • Page 21 SECONDARY AIR REGULATION Secondary air is already set to work correctly in standard installation conditions. In case of exces- sive accumulation of embers in the combustion chamber or in general when it is necessary a big- ger quantity of primary air, it is possible to use the addictive regulations in the ash vain, acces- sible by opening the door (see picture 38). The position towards external is set by manufacturing and it is the one of normal use. The position of the lever towards internal closes the flow of sec- ondary air.
  • Page 22 STEAM EXCESS VALVE Cooking meals sometimes may generate a steam excess inside the oven. For this reason on models with oven there is a valve that allow to eject the steam in excess. The valve is placed inside the oven on the lateral side towards external and when necessary it shall be regulated to open the air intakes. To avoid possible burns, it is recommended to regulate the valve only before the lighting of the thermal cooker. Picture 42 - Steam excess valve. 6.10 OVEN LIGHT On STP thermal cooker there is a light inside the oven which, together with the wide glass of the door, allows to control the cooking process at sight without opening the door. The lighting switch is located on a lateral upright you can find extracting the tool drawer. Picture 43 - Switch to light the oven. 6.11 TOOL DRAWER STP thermal cooker is endowed with a drawer for the tools necessary for the use and the maintenance of the device. The glove box given with the thermal cooker must be hooked on the lateral part of the drawer and can be useful for the placement of small tools. Picture 44 – Glove box fixed on the drawer.
  • Page 23 6.12 TELESCOPIC PULLOUT FOR BAKING PAN STP thermal cooker has a telescopic pullout for endowed baking pan system. In this way, it is possible to extract the baking pan without the necessity to sustain it, ensuring a better practi- cality. The telescopic pullout is placed in a single...

  • Page 24: Maintenance

    The thermal cooker works better if all its parts are without combustion residuals, a clean thermal cooker will be less exposed to problems due to wear. Cleaning frequency depends on how much and how the thermal cooker is used, as well as on combustible quality. WARNING! All these operations must be done with cold thermal cooker. CLEANING THE VISIBLE PARTS Stainless steel parts have to be cleaned cold with neutral detersives or with a specific solution for stainless steel in case of hard to remove dirt. Do not use at all abrasive sponges that may scratch the surface. Dry with a soft rag, following the glazing wise. In some cases, after the installation or after the cooking of meals, it might appear a superficial oxidised stratus, in particular on the stainless steel frame. Also in this case, an accurate cleaning will make the cooker as new. On request Rizzoli gives specific products to clean stainless steel. For enamelled or painted parts, do not use abrasive and aggressive or acid detersives, in case of stains pour some oil and wait while it absorbs the halo, then clean with a soft rag. We recommend not to use solvents or denatured alcohol on painted parts. MAJOLICA OR NATURAL STONE CLADDING (RUSTIK MODEL) Majolica claddings are products of high craftsmanship and it is normal that they may have micro-dots, cracks, shades, shadows and any other imperfections / chromatic discrepancies, essentially due to the characteristics of the material. Natural stone claddings may sometimes have chromatic discrepancies due to the natural grain of the material and a non-uniformity of the product, since the stones are cut and finished manually. These characteristics testify to their precious nature and craftsmanship, making the Rizzoli product unique. ATTENTION! The majolica or Natural stone cladding must only be cleaned when the appliance is cold.
  • Page 25 FUME-CIRCUIT INSPECTION In the STP thermal cooker the combustion fumes are forced to turn completely around the oven. For this reason, the thermal cookers with oven are endowed with an inspection door to clean the fume-circuit. The cleaning must be done at least every six months of normal use, like for the chim- ney sweeping: according to use, you could have to make the cleaning more often. The inspection door is located under the oven door opening the apposite wing. Picture 49 - Fume-circuit inspection. ASH BOX Every time you use the thermal cooker you have to check the ash box located under the combustion chamber. When the box is full, you have to empty it. If you do not empty it, the ash accumulates itself and makes the cleaning more difficult. In case of excessive cinders the flame could not be well fed and you could experience an irregular combustion. OVEN CLEANING Before cleaning it is recommended to remove both the baking pan and the grill. For an accurate cleaning, it is possible to remove also the lateral grills. The oven must be cleaned with products available in the commerce. CHIMNEY CLEANING The cleaning of the chimney must be done by experienced technicians at least every six months of normal use of the thermal cooker. Anyway, cleaning must...
  • Page 26 7.13 MAINTENANCE OF THE LIGHT WARNING! Before starting any maintenance operation for the light, you must disconnect it from AC power and be sure that the thermal cooker is not powered. Verify also if the thermal cooker is cold and if the light was turned on in the previous minutes. Oven lamp suffers high temperatures. Even if it is designed to work in these conditions, it could become out of order. You have to replace it with...

  • Page 27: What To Do If

    WHAT TO DO IF… Problems Effects Possible solutions • Verify that all air regulations are at their maximum opening • Verify that ash or other residuals do not obstruct the grill • Verify that the grill is not inserted correctly (the flat part is up) • Verify that the place in which the cooker is situated is well aired and that Irregular combustion. aspiring hoods or other devices are not working • Verify the correct dimensioning of the Incomplete combustion. chimney and of the entrance of the chimney • Verify that the chimney is not obstructed Bad working Smoke comes out of the plate. and that it was cleaned recently • Verify that there are no losses in the exhaust-pipe and Smoke comes out of other parts of the thermal in the conjunctions • Verify that no other devices are connected to the flue • Verify that cooker. the chimney suites the position in which it is situated, in windy places you could have to install an anti-wind chimney • Verify that the combustible is right, dry and of good quality • Verify that the chimney does not go on under the wood fired thermal cooker • Allow the flow of air in the room • Open slightly the ash door when you start the Bad working Bad working due to bad weather thermal cooker • Eventually, use a windproof chimney-pot The chimney and other parts near the thermal...

  • Page 28: Warranty

    WARRANTY DECLARATION OF PERFECTLY MADE PRODUCT Rizzoli warrants that the device has passed all the quality controls and internal tests. Rizzoli also warrants that the device is working, without imperfections due to building or due to materials. This device is the result of the multi-decennial experience of Rizzoli, who warrants a perfectly made product. GENERAL CLAUSES Warranty lasts 2 years since the day of purchase. It is valid for the purchaser only, it is not transferable. To receive the warranty services the customer must provide a valid fiscal document of purchase (cash voucher, invoice etc.) and the enclosed warranty card. Keep them with care. WARRANTY MODALITIES Rizzoli reserves, in its unquestionable judgement, to choose the the action that best fits the problem object of warranty. The imperfect replaced parts remain property of Rizzoli. Rizzoli, in its unquestionable judgement, will decide if the warranty operations must be done in place or in its own factory. For operations made at home in the period of warranty, the customer must pay a fixed call fee in force. This fee must not be paid if the hood has been bought in the previous 3 months. For reparations made in Rizzoli Customer Service centres, transport charges are due. IMPERFECTIONS OR DEFECTS IN THE MATERIALS Imperfections or defects in the materials must be signalled within 8 days since the customer receives the products and anyway this implies only the obliga- tion to replace what provided, excluding any additional responsibility. PARTS NOT INCLUDED IN WARRANTY This warranty does not cover the following, and the customer will be required to pay repair charge, even for defects occurring within the warranty period referred to above: • Any defect that occurs due to mishandling. • Any defect that occurs due to operations performed that are not mentioned in the sections of these instructions. • Damages due to an excessive use of the cooker with consequent overheating of itself. • Damages due to the connection of the hood to a wrong sized vent-hole pipe. • Any defect that occurs due to the lack of application of the national and local laws. • Any defect that occurs due to not perfectly made installations. • Any defect that occurs due to repair, modification, cleaning, etc. performed by anyone other than Rizzoli authorized Customer Service centres.
  • Page 29 INDEX INSTRUCTIONS page 1.1 General instructions page 1.2 Safety instructions page 1.3 Recommended combustibles page 1.4 Other combustibles page 1.5 Accessories page 1.6 Parts of the thermal cooker page INSTALLATION page 2.1 General notes page 2.2 Chimney page 2.3 Dimensions and correct forms of chimney page 2.4 Flue page 2.5 Chimney pot page 2.6 Conjunction page 2.7 Flue outlet predisposition...
  • Page 30 INDEX 6.2 Starting key page 20 6.3 Air regulation page 20 6.4 Secondary air regulation page 21 6.5 Glass cleaning air regulation page 21 6.6 Grill regulation page 21 6.7 Plate cooking page 22 6.8 Oven cooking page 22 6.9 Steam excess valve page 22 6.10 Oven light page 22 6.11 Tool drawer page 22 6.12 Telescopic pullout for baking pan page 23...
  • Page 32 Rizzoli s.r.l. - Unica sede Zona Artigianale 1, Frazione San Lugano 39040 Trodena nel Parco Naturale (BZ) - Italia Tel. +39 0471 887551 info@rizzolicucine.it - www.rizzolicucine.it...

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