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MCZ HERA AIR 7 S1 Installation Manual

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INSTALLATION GUIDE
GB
SEALED PELLET STOVE
HERA AIR 7 S1
HERA AIR 7 XUP! S1
Translation of original instructions

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Summary of Contents for MCZ HERA AIR 7 S1

  • Page 1 INSTALLATION GUIDE SEALED PELLET STOVE HERA AIR 7 S1 HERA AIR 7 XUP! S1 Translation of original instructions...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS TABLE OF CONTENTS ....................II INTRODUCTION ......................1 1-WARNINGS AND WARRANTY CONDITIONS ..............2 2-INSTALLATION .......................11 3-DRAWINGS AND TECHNICAL SPECIFICATIONS ............19 4-UNPACKING ......................24 5- SMOKE OUTLET .....................27 6-INSTALLATION AND ASSEMBLY ................30 7-OPENING THE DOORS .....................40 8-CONNECTION TO ADDITIONAL DEVICES ..............41 9-LOADING THE PELLETS ...................42 10-ELECTRICAL CONNECTION ..................43 11-FIRST START-UP ....................44...

  • Page 3: Introduction

    No part of this manual may be translated into other languages, adapted and/or reproduced, even in part, in other mechanical and/or electronic form or media, for photocopies, recordings or other, without the prior written authorisation of MCZ Group Spa. The company reserves the right to make changes to the product at any time without prior notice. The owner company reserves its rights according to law.

  • Page 4: 1-Warnings And Warranty Conditions

    1-WARNINGS AND WARRANTY CONDITIONS SAFETY WARNINGS • The installation, electrical connection, operating test and maintenance must only be carried out by a qualified operator. • Install the product in compliance with the laws and regulations in force. • Only use the fuel recommended by the manufacturer. The product must not be used as an incinerator.
  • Page 5 1-WARNINGS AND WARRANTY CONDITIONS • Do not dry laundry on the product. Any drying racks or the like must be kept at a safe distance from the product. Fire hazard. • The product maintenance operations must be exclusively carried out by a qualified operator on a yearly basis.
  • Page 6 1-WARNINGS AND WARRANTY CONDITIONS • Do not allow the product to come into contact with water, it contains live electrical parts. • Do not wash the product with water (or other liquids) as they could penetrate inside the unit, damaging the electrical insulation with the risk of electrocution. • Do not use detergents to wash the stove, they could damage the aesthetic parts of the product.
  • Page 7 1-WARNINGS AND WARRANTY CONDITIONS • The sound pressure level of this appliance does not exceed 70 dB(A). • Live electrical parts: only power the product once it has been fully assembled. • Disconnect the product from the 230V power supply before performing any maintenance operations.
  • Page 8 1-WARNINGS AND WARRANTY CONDITIONS INFORMATION: • Please contact the retailer or qualified personnel for any information, problem or malfunction. • Only use the fuel specified by the manufacturer. • When the product is switched on for the first time, it is normal for it to emit smoke due to the paint heating up for the first time. Therefore make sure the room it is installed in is well-ventilated.
  • Page 9 1-WARNINGS AND WARRANTY CONDITIONS WARRANTY CONDITIONS For the duration, terms, conditions, limitations of the MCZ conventional warranty, please refer to the specific warranty card that is included with the product. Information for management of waste electrical and electronic equipment containing batteries and accumulators This symbol appears on the product, on the batteries, on the accumulators or on their packaging or on their documentation;...
  • Page 10 1-WARNINGS AND WARRANTY CONDITIONS WARNINGS FOR THE CORRECT DISPOSAL OF THE PRODUCT The owner is the sole party responsible for demolishing and disposing of the product. This must be performed in compliance with laws related to safety and environmental protection in force in his/her country. At the end of its working life, the product must not be disposed of as urban waste.
  • Page 11 1-WARNINGS AND WARRANTY CONDITIONS LEGENDA WHERE TO DISPOSE MATERIALS Metal Glass If there is any, to be disposed of separately based on the material used: Tiles or ceramics OUTER CLADDING Stone Glass ceramic (fire door): to be disposed of with inert or mixed waste If there is any, to be disposed of separately based on the material used: Tempered glass (oven door): to be disposed...
  • Page 12 1-WARNINGS AND WARRANTY CONDITIONS Our solid bio-combustible products, (hereinafter called “Products”) are designed and manufactured in compliance with one of the following European standard harmonised to Regulation (UE) no. 305/2011 for construction products: EN 14785: “Residential space heating appliances fired by wood pellets” EN 13240: “Room heaters fired by solid fuel.”...

  • Page 13: 2-Installation

    2-INSTALLATION The instructions in this chapter refer explicitly to the Italian installation regulation UNI 10683. In any case, always observe the regulations in force in the country of installation. PELLETS The pellet is obtained from natural dried wood sawdust (without paint). The compactness of the material is guaranteed by the lignin contained in the wood itself, without glue or binders.
  • Page 14 2-INSTALLATION FOREWORD The heating system (generator + combustion air supply + combustion product expulsion system + any hydraulic/aeraulic system) must be installed in compliance with the laws and regulations in force , and carried out by a qualified technician, who must issue a declaration of conformity of the system to the system manager and shall undertake full responsibility for final installation and consequent good operation of the product.
  • Page 15 2-INSTALLATION MINIMUM DISTANCES Observe the distances from flammable objects (sofas, furniture, wood panelling, etc..) as specified in the following diagram. If objects considered to be particularly sensitive to heat are present, such as furniture, curtains or sofas, as a precaution, increase the stove clearances substantially to avoid possible deterioration due to the effect of heat.
  • Page 16 2-INSTALLATION In any case, ensure adequate distance to facilitate access during cleaning and extraordinary maintenance. If this is not possible, it must still be possible to distance the product from adjacent walls/elements. This operation must be performed by a technician qualified to disconnect the combustion product expulsion ducts and their subsequent restoration.
  • Page 17 2-INSTALLATION Below 15kW: Air duct diameter Maximum length Maximum length (smooth duct) (corrugated duct) 50mm 60mm 80mm 100mm Above 15kW: Air duct diameter Maximum length Maximum length (smooth duct) (corrugated duct) 50mm 60mm 80mm 100mm Technical Dept. - All rights reserved - Reproduction prohibited...
  • Page 18 2-INSTALLATION Preparing the smoke expulsion system The combustion product expulsion system is a particularly important element for the proper operation of the appliance and must be correctly sized according to EN 13384-1. Its creation/adaptation/verification must always be carried out by a legally qualified operator and must comply with the regulations in force in the country where the appliance is installed.
  • Page 19 2-INSTALLATION Chimneypot The chimneypot, meaning the end part of the flue, must meet the following characteristics: • the smoke outlet section must be at least double the internal section of the chimney; • prevent the penetration of rain or snow; •...
  • Page 20 2-INSTALLATION EXAMPLES OF INSTALLATION (DIAMETERS AND LENGTHS TO BE SIZED) 1. Flue installation with hole for the passage of the pipe increased by: • minimum 100mm around the pipe if next to non-flammable parts such as cement, brick, etc.; or •...

  • Page 21: 3-Drawings And Technical Specifications

    3-DRAWINGS AND TECHNICAL SPECIFICATIONS DRAWINGS AND CHARACTERISTICS HERA AIR 7 S1 STOVE DIMENSIONS Ø80 Ø57 Ø532 Technical Dept. - All rights reserved - Reproduction prohibited...
  • Page 22 3-DRAWINGS AND TECHNICAL SPECIFICATIONS HERA AIR 7 XUP! S1 STOVE DIMENSIONS Ø130 Ø80 Ø532...
  • Page 23 3-DRAWINGS AND TECHNICAL SPECIFICATIONS TECHNICAL SPECIFICATIONS HERA AIR 7 S1 Energy Efficiency Class Nominal output power 7.0 kW (6020 kcal/h) Minimum output power 2.5 kW (2150 kcal/h) Efficiency at Max 90.5% Efficiency at Min 95.0% Temperature of exhaust smoke at Max 168 °C...
  • Page 24 3-DRAWINGS AND TECHNICAL SPECIFICATIONS TECHNICAL SPECIFICATIONS HERA AIR 7 XUP! S1 Energy Efficiency Class Nominal output power 7.0 kW (6020 kcal/h) Minimum output power 2.5 kW (2150 kcal/h) Efficiency at Max 90.5% Efficiency at Min 95.0% Temperature of exhaust smoke at Max 168 °C Temperature of exhaust smoke at Min 68 °C...
  • Page 25 ACCORDING TO COMMISSION REGULATIONS (EU) 2015/1185 - (EU) 2015/1186 (PRODUCT FICHE) MCZ GROUP SpA Manufacturer: Trademak: Model Identifier: HERA AIR 7 S1 / HERA AIR 7 XUP! S1 Indirect heating functionality: Direct heat output (space heat output): Indirect heat output (water heat output): EN 14785:2006...

  • Page 26: 4-Unpacking

    4-UNPACKING INSTRUCTIONS FOR PACKAGING DISPOSAL The material that the appliance’s packaging is made of must be managed correctly, in order to make collection, reuse, recovery and recycling easier, where possible. The table below illustrates the possible components that the packaging is made of, and the relative instructions for correct disposal. DESCRIPTION CODE MATERIAL SYMBOL...
  • Page 27 4-UNPACKING Handle the product with suitable means paying attention to the applicable safety regulations in force. Do not turn the packaging over and handle the majolica parts with care. The stove is delivered in a single package. Open the package, remove the two screws “v” which secure the stove brackets to the pallet and then remove the bracket “S”...
  • Page 28 4-UNPACKING Therefore, the end user is responsible for product storage, disposal or possible recycling in compliance with the relative applicable laws in force. Do not store the stove unit or its cladding without their packaging. Position the stove and connect it to the flue. Remove the plastic tie that fastens the top to the structure of the stove. If the stove needs to be connected to an outlet pipe which goes through the rear wall (to connect to the flue), take utmost care to make sure that the joint is not forced.

  • Page 29: 5- Smoke Outlet

    5- SMOKE OUTLET REAR SMOKE OUTLET (HERA AIR 7 S1) TOP SMOKE OUTLET (HERA AIR 7 XUP! S1) The stove with the top outlet can have a MONO or COAX type of installation (see the FIRST IGNITION chapter). In the MONO type of installation, the single wall smoke outlet pipe is inserted directly with the T cap fitted.
  • Page 30 5- SMOKE OUTLET INSTALLATION OF CONCENTRIC SMOKE OUTLET WITH SEPARATE COMBUSTION AIR The stove is designed to be connected to the flue through a concentric pipe (XUP version), by means of a special pre-installed fitting. If, due to different requirements, there is a need to draw the combustion air directly from an external wall, the air pipe can be separated from the concentric fitting.
  • Page 31 5- SMOKE OUTLET • remove pipe “h” (combustion air) from the concentric fitting by unscrewing metal clamp “o” • detach and remove air inlet box “k” with pipe “h” by simply pulling it firmly • remove pipe “h” and air inlet box “k” •...

  • Page 32: 6-Installation And Assembly

    On delivery, the stove has no metal cladding, as shown in the image below. Take the box with the package (figure below) and prepare the material for installation. HERA AIR 7 XUP! S1 HERA AIR 7 S1 METAL CLADDING POS.
  • Page 33 6-INSTALLATION AND ASSEMBLY REMOVING THE TOP To remove the complete top “C”, proceed as follows: • Lift the cover “B” • remove the two screws “x” • lift the complete top “C” and put it away in a safe place until the next use Technical Dept.
  • Page 34 6-INSTALLATION AND ASSEMBLY REMOVING THE UPPER PANEL Remove the upper panel “D” by lifting it so that the hooks of the panel come out of the holes “f” and “g” in the structure of the stove.
  • Page 35 6-INSTALLATION AND ASSEMBLY In case of intervention and/or maintenance on the stove, after having removed the decorative panel “D”, the plate “E” can be removed by removing the 5 screws “x”. Technical Dept. - All rights reserved - Reproduction prohibited...
  • Page 36 6-INSTALLATION AND ASSEMBLY REMOVING THE REAR PANEL Remove the rear decorative panel “F” by removing the 8 screws “x” as shown in the following images (also next page).
  • Page 37 6-INSTALLATION AND ASSEMBLY Technical Dept. - All rights reserved - Reproduction prohibited...
  • Page 38 6-INSTALLATION AND ASSEMBLY CLADDING ASSEMBLY Mount the cover by proceeding as follows: • take one of the two sides “A” from the packaging • bring panel “A” close to the stove structure and make sure that the hooks “S” on the stove structure enter the holes “p” in the panels “A”...
  • Page 39 6-INSTALLATION AND ASSEMBLY • repeat the same step for the left side of the stove. Technical Dept. - All rights reserved - Reproduction prohibited...
  • Page 40 6-INSTALLATION AND ASSEMBLY ASSEMBLING THE TOP Once the decorative sides “A” have been fitted, the top can be set back into place. • take the top “C” with its screws “x” • place it on top of the stove structure •...
  • Page 41 6-INSTALLATION AND ASSEMBLY ACCESS TO THE ELECTRONIC BOARD The circuit board “U” is on the right side (handle side). If you need to access the board, you must remove the back side panel as explained above. ACCESS TO THE GEARMOTOR You must remove the rear decorative panel to access the gearmotor.

  • Page 42: 7-Opening The Doors

    7-OPENING THE DOORS DOOR OPENING To open the decorative door “R” or the firebox door “T” insert the cold handle “V” into its hole in the handle and pull it outwards. Attention! The firebox door must be closed properly for the stove to work correctly. Only open the doors when the stove is switched off and cold.

  • Page 43: 8-Connection To Additional Devices

    8-CONNECTION TO ADDITIONAL DEVICES INSTALLATION OF WIFI PANEL (OPTIONAL-CODE 4020003) Use the knockout hole at the back of the stove to install the Easy Connect WiFi panel and follow the installation instructions found inside the product. The WiFi panel must be connected to the board on the stove using the supplied cable. In order to use the WiFi system, download the Easy Connect app and follow the set-up instructions.

  • Page 44: 9-Loading The Pellets

    When the appliance is running and when it is turned off, most of the stove surfaces are very hot (door, handle, glass, smoke outlet pipes, etc.). Therefore it is recommended to avoid coming into contact with these parts. LOADING THE PELLETS HERA AIR 7 XUP! S1 STOVE LOADING THE PELLETS HERA AIR 7 S1 STOVE...

  • Page 45: 10-Electrical Connection

    10-ELECTRICAL CONNECTION ELECTRICAL CONNECTION First connect the power cable to the back of the stove and then to a wall socket. It is recommended to disconnect the power cable when the stove is not used. ELECTRICAL STOVE CONNECTION The cable must never come into contact with the smoke exhaust pipe or any other part of the stove. STOVE POWER SUPPLY Connect the power cable to the back of the stove and then to a wall socket.

  • Page 46: 11-First Start-Up

    11-FIRST START-UP WARNINGS BEFORE IGNITION GENERAL WARNINGS Remove any objects that may burn from the product brazier and from the glass (manual, various adhesive labels or any polystyrene). Check that the brazier is positioned correctly and rests properly on the base. The first ignition may not be successful as the feed screw is empty and does not always manage to load the brazier with the required amount of pellets in time to light the flame.
  • Page 47 11-FIRST START-UP SETTING THE TYPE OF INSTALLATION WHEN STARTING THE PRODUCT FOR THE FIRST TIME The installation of the product and the type of installation must only be carried out by a qualified operator. The first time the stove is switched on, the PRODUCT TYPE screen appears. Product Type <...
  • Page 48 11-FIRST START-UP SWITCHING THE EQUIPMENT OFF To switch off the appliance, press the button 1 on the emergency panel or the button 3 on the optional remote control. The equipment will start the shutdown process which involves consuming the residual pellets in the brazier, the latter being cleaned and the residual heat in the structure being dissipated.

  • Page 49: 12-Control Panel

    12-CONTROL PANEL 1. Stove start-up/shutdown 5. Decreases set temperature / programming functions. 2. Scrolling down through the programming menu. 6. Increases set temperature / programming functions. 3. Menu 7. Display. 4. Scrolling up the programming menu. Technical Dept. - All rights reserved - Reproduction prohibited...

  • Page 50: 13-Menu Entries And Operation

    13-MENU ENTRIES AND OPERATION MAIN MENU Press key 3 (menu) to access it. The options accessed are: • Date and Time • Timer • Sleep (only when stove is on) • Settings • Info Date and time configuration Proceed as follows to configure the date and time: •...
  • Page 51 13-MENU ENTRIES AND OPERATION EXAMPLES OF PROGRAMMING: 08:00 12:00 11:00 14:00 Stove on between 08:00 and 14:00 08:00 11:00 11:00 14:00 Stove on between 08:00 and 14:00 17:00 24:00 00:00 06:00 Stove on between 17:00 on Monday to 06:00 on Tuesday NOTES ON USE OF THE TIMER •...
  • Page 52 13-MENU ENTRIES AND OPERATION OPERATING MODE ADJUSTMENT MENU “Adjustments” menu settings determine the operating mode of the stove. To access the menu, proceed as follows: • Press the + - keys • Scroll by using the <> arrows and select “Set Amb. T” or “Set Ventilation T” or “Set Flame” •...
  • Page 53 13-MENU ENTRIES AND OPERATION SETTINGS MENU The SETTINGS menu enables to configure the stove operating modes: a. Language. b. Cleaning (only displayed when stove is off). Feed screw loading (shown only when stove is off). d. Tones. e. External thermostat (activation). Auto Eco (activation).
  • Page 54 13-MENU ENTRIES AND OPERATION d - Tones This function is disabled by default. To enable it proceed as follows: • Press the “menu” key. • Use the arrow keys to scroll through and select “Settings” • Press “menu” to confirm. •...
  • Page 55 13-MENU ENTRIES AND OPERATION h - Pellet Recipe This function is for adapting the stove to the type of pellet in use. As there are many types of pellets available on the market, operation of the stove can vary considerably according to the quality of the fuel. When the pellets clog up the brazier due to excess loading of fuel or when the flame is always high even at low power, or when the flame is low, it is possible to decrease/increase the amount of pellets in the brazier: The available values are:...
  • Page 56 13-MENU ENTRIES AND OPERATION • Press “menu” to confirm. • Use the arrow keys to scroll through and select ‘’Components test’’ . • Press “menu” to confirm. • Use the + - keys to select the test to be carried out •...
  • Page 57 13-MENU ENTRIES AND OPERATION EXTERNAL THERMOSTAT CONNECTION (optional) The room thermostat is not included with the stove and must be installed by a qualified technician. ATTENTION! The electrical wires must not come into contact with the hot parts of the stove. AMB.

  • Page 58: 14-Safety Devices

    14-SAFETY DEVICES SAFETY DEVICES The product is fitted with the following safety devices PRESSURE SWITCH Monitors pressure in the smoke duct. It is designed to shut down the pellet feed screw in the event of an obstructed flue or significant back-pressure (from wind) SMOKE TEMPERATURE PROBE Detects the temperature of the smoke, thereby enabling start-up or stopping the product when the temperature drops below the preset...

  • Page 59: 15-Alarms

    15-ALARMS ALARM SIGNALLING When an operating condition other than the one expected for regular stove operation occurs, an alarm is triggered. The reason for the alarm is shown on the control panel. The sound signal is not enabled for alarms A01-A02 in order not to disturb the user when there is an absence of pellets in the hopper during the night.
  • Page 60 15-ALARMS NORMAL SHUTDOWN (on the panel: OFF with flashing flame) When the shutdown key is pressed, or when there is an alarm signal, the stove enters the thermal extinguishing stage which involves automatic execution of the following stages: • Pellet loading stop •...
  • Page 61 15-ALARMS ALARM A05 AND MINIMUM NEGATIVE PRESSURE INSIDE THE PELLET HOPPERS OF THE SEALED PRODUCTS In the event that alarm A05 is triggered often, please note that: Smoke pressure switch triggered Check for chimney obstructions / door open Fuel loading hatch Close the hatch.
  • Page 62 15-ALARMS Remembering that the draught recommended for the products to work properly is 10 Pa at maximum capacity and 5 Pa at minimum (according to the technical data sheet found in the user and maintenance manual), adjustments may be required in worse draught conditions (also due to the position of the flue in areas that are particularly subject to adverse weather such as prevailing winds, snow, northern exposure, etc.) so as to always guarantee the required negative pressure inside the hopper.
  • Page 63 15-ALARMS NEGATIVE PRESSURE INSIDE THE HOPPER WITH FACTORY-SET PARAMETERS AND A DRAUGHT OF 5 Pa (MINIMUM RECOMMENDED) POWER VALUES 13.7/14.2 Pa 15.1/15.6 Pa 17.1/17.5 Pa 19.1/19.5 Pa 22.0/22.2 Pa Draught 6 kW 95°C 110°C 125°C 141°C 165°C Smoke temperature 13.8/14.3 Pa 15.6/16.1 Pa 17.8/18.0 Pa 21.7/22.2 Pa...

  • Page 64: 16-Recommendations For Safe Use

    16-RECOMMENDATIONS FOR SAFE USE ONLY CORRECT INSTALLATION AND APPROPRIATE MAINTENANCE AND CLEANING OF THE APPLIANCE CAN GUARANTEE CORRECT OPERATION AND SAFE USE OF THE PRODUCT. We would like to inform you that we are aware of cases of malfunctioning of domestic pellet-fuelled heating products, mainly due to incorrect installation and use, as well as inadequate maintenance.

  • Page 65: 17-Cleaning

    17-CLEANING EXAMPLE OF A CLEAN BRAZIER EXAMPLE OF A DIRTY BRAZIER Only by properly servicing and cleaning the product is it possible to ensure its safety and correct operation. ATTENTION! All the cleaning operations of all parts must be performed with the product completely cold and unplugged. Disconnect the product from the 230V power supply before performing any maintenance operation The product requires little maintenance if used with certified good quality pellets.
  • Page 66 17-CLEANING For the brazier to be cleaned properly, remove it from its housing completely and thoroughly clean all the holes and the grate on the bottom. If high quality pellets are used, you will normally only need to use a brush to restore the optimal operating conditions of the component.
  • Page 67 17-CLEANING PERIODIC CLEANING PERFORMED BY A QUALIFIED TECHNICIAN CLEANING THE HEAT EXCHANGER Half-way through the winter season, but especially at the end, the compartment through which the exhaust smoke passes will need to be cleaned. This cleaning process is mandatory in order to facilitate the general removal of all combustion residue, before it becomes very difficult to remove it due to moisture compacting it over time.
  • Page 68 17-CLEANING CLEANING THE EXCHANGER CLEANING THE UPPER COMPARTMENT Clean the upper exchanger when the stove is cold and without cladding. After removing the cap to clean the lower compartment “n” (see previous paragraph), use a stiff rod or a bottle brush to scrape the walls of the firebox (see arrow) to make the ash fall into the lower compartment.
  • Page 69 17-CLEANING Use a stiff rod or a bottle brush to scrape the walls of the firebox (see arrow - respectively to the right and to the left of the firebox) to make the ash fall into the lower compartment. Then thoroughly clean the lower exchanger, replace any gaskets if needed, and reassemble. PERIODICAL CHECK OF THE DOOR CLOSURE Make sure the door closure ensures a correct sealing action (with the “paper sheet”...
  • Page 70 17-CLEANING CLEANING THE SMOKE DUCT AND GENERAL CHECKS Clean the smoke outlet system, especially around the Tee fittings, elbows and any horizontal sections of the smoke duct. For information on periodically cleaning the flue, contact a skilled chimney sweep. Check the seal of the ceramic fibre gaskets on the door of the stove. If necessary, order new replacement gaskets from the retailer or contact an authorised service centre to carry out the operation.
  • Page 71 17-CLEANING SHUTDOWN (end of season) At the end of each season, before switching the product off, it is recommended to remove all the pellets from the hopper with a vacuum cleaner with a long pipe. We recommend removing the unused pellets from the hopper because they can retain moisture. Disconnect any combustion air ducting that can lead to moisture inside the combustion chamber but, above all, ask the specialised technician to refresh the paint inside the combustion chamber with the special silicone spray paints (available at any store or Technical Assistance Centre) during the necessary annual end of season scheduled maintenance operations.

  • Page 72: 18-Faults/Causes/Solutions

    18-FAULTS/CAUSES/SOLUTIONS ATTENTION: All repairs must only be carried out by a specialised technician, with the product switched off and unplugged. ANOMALY POTENTIAL CAUSES SOLUTIONS The pellets are not fed into The pellet hopper is empty Fill the hopper with pellets. the combustion chamber.
  • Page 73 18-FAULTS/CAUSES/SOLUTIONS ANOMALY POTENTIAL CAUSES SOLUTIONS Pellets accumulate in the brazier, the Insufficient combustion air. Clean the brazier and check that all the glass of the door gets dirty and the holes are clear. Perform a general cleaning flame is weak. of the combustion chamber and the smoke duct.
  • Page 74 18-FAULTS/CAUSES/SOLUTIONS ANOMALY POTENTIAL CAUSES SOLUTIONS Noisy air fan even though it is set to High set flame causes ventilation increase Lower set flame from Adjustments menu minimum Incorrect combustion adjustment. Check recipe. No increase in temperature with stove in operation. Set flame 1 setting (level too low) Increase power from the settings menu.

  • Page 75: 19-Circuit Board

    19-CIRCUIT BOARD AMB. H2O +TC- DISPLAY TERM. ENCODER FUMI OPT. +5V GND ENC LIVE ELECTRICAL CABLES SERIAL DISCONNECT THE POW- ER SUPPLY CABLE 230V BEFORE CARRYING OUT ANY OPERATIONS ON THE ELECTRICAL BOARDS ACC. SIC DEP. FUMI SCA COC. WIRING KEY 1.
  • Page 76 Via La Croce n°8 33074 Vigonovo di Fontanafredda (PN) – ITALY Telephone: 0434/599599 a.s. Fax: 0434/599598 Website: www.mcz.it e-mail: info.red@mcz.it 8902140302 REV 0 21/04/2022...

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Hera air 7 xup! s1

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