Alfa Network ZENO 4 User manual

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USER MANUAL
ZENO
www.alfaforni.com

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1
Index
• GENERAL WARNINGS.........................................3
• INSTALLATION.....................................................5
• INSTALLATION BEHIND WALL..........................7
• ELECTRICAL CONNECTION................................8
• VENTILATION.......................................................9
• TOUCH SCREEN AND USER INTERFACE..........11
• FIRST USE AND IGNITION.................................21
• 1° IGNITION.........................................................21
• CARE AND MAINTENANCE..............................22
• F.A.Q...................................................................26
• WARRANTY........................................................27

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DEAR CUSTOMER
Before you starting using this oven, please read the following manual. Operator safety, equipment devices must
be kept ecient at all times. This booklet is intended to illustrate the proper use and maintenance. It is the oper-
ator's duty and responsibility to abide by it.
DECLARATION OF COMPLIANCE CE
Alfa Refrattari S.r.l - Via Osteria della Fontana, Anagni (FR), Italia - Declares that the electrical products comply
with the following directives:
• Machinery safety. Basic concepts, general design principles.
• Specications and technical principles. - UNI EN ISO 12100:2010
• Safety of household and similar electrical appliances.
• General Rules - Part 1 - CEI EN 60335-1
• Safety of electrical appliances for household and similar use. Part 2 - Special standards for electric cookers,
ovens, electric hotplates for collective use. CEI EN 60335-2-36 2017
• Disturbances in power networks produced by household appliances and similar electrical equipment - Part2-
Harmonics - EN 60555-2-34
• Disturbances in power networks produced by household appliances and similar electrical equipment - Part3
- Voltage uctuations - EN 60730-2-9
• Electromagnetic compatibility - Generic emission standard - Part 1 - Residential, commercial and light indu-
stry environments - EN 50081-1
• Electromagnetic compatibility - Generic immunity standard - Part 1- Residential, commercial and light indu-
stry environments - EN 50082-1 2014/35/UE, 2006/42/CE, 2004/108/CEE, 2014/30/UE
• Alfa Refractari S.r.l declares that the product, as per the technical le, complies with the above directives.

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WARNING: Improper connection, as well as any alterations or improper maintenance,
may cause material damage to things or people and even death in extreme cases.
Please read the instructions carefully before installing and using the appliance.
READ THE FOLLOWING INFORMATION CAREFULLY FOR A CORRECT INSTALLATION AND OPTIMAL
OPERATION OF THE OVEN
-The data plate with the serial number, the model number and the mark is visibly applied to
the oven. The data plate must never be removed.
-Check the appliance after unpacking. If any transport damage has occurred, do not use the
oven.
-Before use, remove all plastic lm protecting the appliance, blowing hot air to make it easier (hairdryer).
-This appliance is intended for professional use by qualied persons.
-Even though ALFA stainless-steel ovens include insulating materials between steel layers, they could
overheat on the outside.
-During the switch-on phase, small mued noises may occur; this should not cause concern, as this is only
the material adapting to the change in temperature.
-Never allow children to get near the appliance when it is operating or to play with it.
-Never use steel sponges or sharp scrapers which could damage the surfaces. Use common non-abrasive
products and, if need be, wood or plastic tools. Rinse thoroughly and dry with a soft or microbre cloth.
-Never use plastic dishes or containers. The oven high temperatures could melt the plastic and damage the
appliance.
-Use tools and cutlery that are resistant to high temperatures.
-Place the oven on a level surface and make sure to keep it away from objects and materials that might be
damaged by heat or sparks.
-Due to the high temperatures, the colours of the exterior surfaces might vary in time.
-Do not paint the oven or put objects on it.
-The installation of the oven must allow for easy access for cleaning.
-Lock the oven casters to make sure your oven stays in place before using it.
-Do not move the oven during use or when it is hot.
-Never store ammable objects into the oven.
-Never insert sharp metal objects (cutlery or tools) into the ventilation slots.
-Never obstruct the ventilation openings or heat dissipation slots.
-Never place sealed containers or boxes into the oven. They can build pressure during cooking and can end
up exploding.
-Never put ammable materials on the upper third under the oven chamber.
-Hold the handle when opening and closing the door.
-Do not touch the exterior surfaces and the ue when the oven is running.
-Do not use ammable liquids near the oven.
-Keep any electrical wiring and fuel line away from hot surfaces.
-Do not use the oven in case of breakage or malfunctioning.
-Do not lean or rest objects on the oven: they might compromise its stability.
-In case of grease re, turn o the oven and leave the door closed until the re goes out.
-The parts sealed by the manufacturer should not be altered by the user.
-Do not leave the appliance unattended during cooking that releases fats and oils: they can catch re.
-Do not lift the oven from the shelf or the worktop.
-Any modications made to the device can be potentially dangerous.
GENERAL WARNINGS

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ALWAYS READ THE COMPLETE USER MANUAL.
Further copies of this manual are available at www.alfaforni.com
DOWNLOAD USER MANUAL
www.alfaforni.com/user-manual-zeno.php
SCAN
ME
RETAIN THIS MANUAL FOR FUTURE REFERENCE
SAFETY WARNINGS
PLEASE READ THE FOLLOWING INSTRUCTIONS BEFORE INSTALLING AND USING THE OVEN.
Please read the entire instruction manual before installing this appliance.
Failure to follow these instructions could result in personal and property damage or death.
Please contact the local authorities for any restrictions on the installation.
ONE OF THE MAIN CAUSES OF OVEN FIRE IS DUE TO THE NON-OBSERVANCE OF THE MINIMUM DISTANCE
FROM FLAMMABLE MATERIALS OR IMPROPER INSTALLATION. IT IS OF THE UTMOST IMPORTANCE THAT
THIS OVEN BE INSTALLED IN ACCORDANCE WITH THESE INSTRUCTIONS.
FOR YOUR SAFETY: Do not store or use gasoline or other ammable vapours or liquids in the
proximity of this or any other appliance. Always keep the area under and around this appliance
free and clear of any combustible materials.
WARNING: Improper installation, adjustment, alteration or maintenance might cause personal
and property damage and death

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INSTALLATION
The local must have the following characteristics:
OVEN SPACE: Prepare adequate space when positioning the oven. For dimensions and weight, refer to the
product data sheet.
CHIMNEY: for exhaust vapour, with an ecient damper suitable for receiving a pipe of a diameter of not less
than 120 mm. Use the evacuation chimney with the compensation opening.
POWER SUPPLY: Three-phase line at least equal to the maximum oven power. Lower power may be installed
as the oven is equipped with electronic control with power partializers (For more information contact the oven
manufacturer). In any case, consider other electrical utilities to determine the power to be installed in the room
where the oven will be installed.
THIS APPLIANCE CANNOT BE COATED WITH FLAMMABLE MATERIALS. USE ONLY
NON-COMBUSTIBLE MATERIALS TO BUILD IN THE OVEN.
THE TOP PART OF THE OVEN CANNOT BE BUILT IN AND IT MUST BE KEPT CLEAR
OF FURNITURE THAT COULD COMPROMISE ADEQUATE VENTILATION
ATTENTION: do not occupy the minimum safe distance with insulation or other materials.
-Improper installation of this oven can cause re; to reduce this risk, carefully follow the instructions.
-Read the entire instruction manual before installing this appliance. Failure to follow these instructions could
result in personal and property damage or death.
-Leave enough space around the burner for proper maintenance.
-Remove the blocks inside the furnace chamber used for transportation.
ATTENTION
the outer sides of the oven can reach temperatures above 50 °C (120 °F). Any ammable materials must not be
within 1-metre radius of the oven.
CAUTION: When being used, place the oven at a safe minimum distance from ammable materials or any other
substance that can be damaged by heat.
FOR YOUR SAFETY
Place the oven on a at and stable surface.
Involuntary movements during operation may result
in personal injury and property damage.
CAUTION: Place the oven at a minimum distance of 20 cm (8 in) from the wall or any other equipment.
Increase the minimum distance to 50 cm around the ue and 1m from the top of the oven.

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THE TOP VERSION OVENS SHOULD BE PLACED ON TABLES OR OTHER FIREPROOF SURFACES WITH
ENOUGH LOAD-BEARING CAPACITY (for the weight, refer to the product data sheet attached to the
instruction manual), ADJUST THE LEVELLING FEET TO HOLD THE OVEN STEADY.
To move the oven more easily, remove the bricks inside the combustion chamber
FRONT VIEW VIEW FROM ABOVE
50 cm
100 cm
50 cm
20 cm 20 cm
20 cm
20 cm 20 cm
BASE
• Correct assembly: Before using the base, check that all screws and parts are tightened tightly to ensure
both stability and safety during use.
• Load capacity: Comply with the weight limit indicated for the base of the oven with wheels. Do not overload
the base otherwise it could cause damage to the wheels or cause the oven to tip over.
• Positioning surface: Make sure to position the oven base on a at and stable surface. Avoid placing it on
slippery or unstable surfaces that could cause the oven to overturn.
• Wheel locking: The oven base is equipped with wheels that have wheel-brakes. Make sure to lock the
wheels when the oven is in position so as to avoid unwanted displacements during use. Check the condition
of the wheels periodically, making sure that they are in working condition and that they roll without obsta-
cles. Lubricate moving parts and clean the oven base regularly to avoid accumulation of dust and dirt.
• Safe use: Use the oven base with wheels only for the intended purpose, i.e. to support and facilitate the
movement of the oven. Do not use it as a ladder or support for other heavy objects.

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WARNING:
BUILT-IN INSTALLATION IS TO BE UNDERSTOOD
AS INSTALLATION BEHIND A WALL
-The oven can be installed behind a reproof wall leaving the non visible sides of the oven free and accessible
(see img 3)
-Do not cover the oven with materials which would cause excessive overheating of the outside of the oven
with possible paint deterioration
-Provide at least 2cm of air around the oven at the front (see img 1) to ensure easy removal in case of need.
-The premises must be well ventilated by providing suitable air vents.
-See ventilation section on page 11. Lack of air recirculation especially in gas ovens causes malfunctions
-Use reproof materials for wall construction. (see img 1)
-For the vapour outlet, refer to the ventilation section on page 10.
-Install the oven on the base. When installing on a surface, make sure to screw the feet on.
INSTALLATION
BEHIND A WALL
Minimum distance between oven
and wall opening >2cm CC =Buttery Valve for draft
regulation, accessible
from the front
Accessibility -
from all sides-
Fireproof wall
A
C
>P
P
>P
>P >P
P
P = Oven depth
Fireproof wall
Smoke outlet
>150cm from the
edge of the roof
A = Well ventilated area
max
45°
C
IMG 1 - Front view
IMG 3 - View from aboveIMG 2 - Side view

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ELECTRICAL CONNECTION
CONNECTION TO THE CHIMNEY AND TO VAPOR
DISCHARGE
The product is supplied with cable of 1,5 m and without an electric plug. The electrical plug assembly and
oven connection operations must be carried out by qualied personnel.
Electrical oven connection operations must be carried out by qualied personnel, possession of the necessary
technical requirements established by the country where the oven is installed. The oven supply cable must be
connected to an external polarized circuit-breaker with minimum contact opening of 3 mm in the immediate
vicinity, with the following minimum characteristics:
MODEL MAX POWER NOMINAL POWER ELECTROMAGNETIC
CURVE
POWER BREAK
kW Amp kA
Zeno 4 13,5 19,5 Type C 10
Zeno 6 18 22 Type C 10
Over-current protection devices must comply with the relevant standards of the country of installation. The
devices used for the connection must be approved for the country of installation The degree of protection of the
enclosures must be no less than IP 44 with the characteristics laid down in the standard of the country of instal-
lation. Verify that the oven has its earth terminal connected to an earth system that complies with the standard
of the country of installation
The connection operations of the oven vapour discharge chimney, must be performed by qualied personnel.
The connection to the replace must be done through, a steel or aluminium tube of diameter not less than 120
mm. The damper of the chimney must ensure vapour evacuation in the most unfavourable weather conditions.
Any fan in the room they must not compromise the damper of the chimneys. Pollutants such as hydrocarbons
will not have to aect the chimney.

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VENTILATION AND AREATION
VENTILATION
Appliances must be installed in rooms that are suciently ventilated to prevent the concentration of substances
in the air.
NATURAL VENTILATION
Natural ventilation can be obtained by using one or more permanent openings on walls/windows/xtures or
through ventilation ducts. The net area of the ventilation openings must be no less than 300 cm2.
The ventilation slots may be made in the walls, on the doors or the window systems of the room or the
combustion air room facing outwards; they can be obtained by increasing the gap between doors facing
outwards and the oor of the room or the combustion air room or they can be realised on the xtures facing
outwards as long as the free air ow is guaranteed and the net cross section is measurable.
The room ventilation can also be implemented by an individual or collective ventilation duct, provided that this
pipework is impermeable to smoke and gas and it does not have changes in direction or sharp edges.
In case of indirect ventilation of the room where the gas appliance is installed, the circulation of air between
adjacent rooms may be ensured with several air ow openings as long as each of them has a net cross-section
area of no less than 200 cm2. Such apertures can be made in the walls or in the doors of the common walls or
can be obtained by increasing the gap between the inner doors and the oor of the premises as long as the free
air ow is guaranteed and the net cross section is measurable.
ATTENTION
Always contact a qualied technician.
FORCED VENTILATION
Forced ventilation can be obtained with systems equipped with electric fans. The actual ow rate must be no
less than 1,72 m3/h per kW.
The air velocity near the installation must not disturb the operators and must have the following characteristics:
- The air velocity next to the exhaust hood must be between 0,25 m/s and 0,5 m/s.
- The make-up air velocity must be less than or equal to 0,15 m/s up to 2 metres from the walking surface.
The air ow vents in the premises, facing outwards, must have the following characteristics:
- To be conveniently located so as not to create a short circuit in the air ow.
- To be protected by grilles.

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AERATION
The required aeration may be obtained through the implementation of one of the systems described in the
following paragraphs.
FORCED AREATION SYSTEMS
The hourly ow rate of the system must be at least 1,72 m3per kW referred to the total rated thermal output of
the installation
NATURAL AERATION SYSTEMS
Total rated thermal output not exceeding 15 kW. Through permanent openings facing outwards in the room
where the appliances are installed. The net area of the openings or the cross section must be no less than 100
cm2.
Total rated thermal output not exceeding 35 kW. Through exhaust hoods connected to the ue or duct with
natural draught according to the UNI EN 13 384 guidelines.
NATURAL VENTILATION - S=300cm2
FORCED AERATION - 1,72 m3/h x kW
NATURAL VENTILATION - S=300cm2
NATURAL AREATION - S>100cm2
FORCED VENTILATION - 1,72 m3/h x kW
FORCED AERATION - 1,72 m3/h x kW
FORCED VENTILATION- 1,72 m3/h x kW
NATURAL AREATION - S>100cm2

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TOUCH SCREEN AND USER INTERFACE
Initial infomation
• “STAND-BY”: the device is powered up but switched o by the software; the loads are switched o.
• “ON” the device is powered up and switched on; the loads can be switched on.
• “OFF”: the device is not powered up; the loads are switched o.
Stand by screen
Briey press the ON/OFF key to switch on the device; pressing it
for 3 seconds, switches it o.
The Planning key will also be displayed top left making it possi-
ble to set weekly programmed switch-ons (see point 08 Weekly
programmed switch-on). (pag.16).
Set-up key displayed top right, makes it possible to access the
date and time settings and to congure the parameters.
The 'Room Light' button allows the room light to be manually
switched on or o even when the controller is in stand-by mode.
Control screen
Menù
Energy-saving mode
Resistor status
Temperature Top
Set point Top
Temperature Floor
Set point Floor
Set point Front
Timer
Status bar
Button ON/OFFLight ON/OFFRecipes
Energy-saving mode
Function not available for
this model
Function not available for
this model
Function not available for
this model
Recipe steps
Temperature Front
Time and date
Function not available for this model

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FUNCTIONS
In the Zeno oven, dierentiated temperature management between Top, Floor and Front is achieved by setting
the desired temperature values zone by zone. The temperatures can be set individually and are not bound to
each other.
Settings on the display are:
• Status bar
• Energy-saving function
• Rapid heating
• Temperature and set point
• Power Top
• Power Floor
• Power Front
• Cooking timer
• Light
• Recipe book
• Weekly programmed switch-on
• General settings and other functions
N.B.: The vent button on the display is not enabled for this oven model. To open and close the ventilation valve
either pull or push the knob located inside the hood on the front. The valve will open when pulling it towards the
operator and will close when pushing it towards the oven.
Status bar
When the device is switched on, the oven is already operating and the outputs are active according to the re-
quired settings. The status bar shows the function being performed by the oven.
Pre-heating
Cooking cycle in progress
Cooking cycle terminated
Oven up to temperature
cooking cycle can begin

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Energy-saving function
Rapid heating
Temperature and set point
The energy-saving function can be activated, except when rapid heating is in progress. This function allows the
reduction of consumption by limiting the power of the heating elements. It can remain active until the deactiva-
tion button is pressed.
Disattivato
deactivated
Attivato
activated
The rapid heating key enables the oven to reach its regulation setpoint more quickly by activating the top and
oor heaters at full power. This function cannot be activated when energysaving is in progress.
How to set the temperature in the Zeno oven
The temperature setting is based on the chamber probe and the control out-
puts are the 3 relays (cielo, platea e bocca).
Clicking on the temperature line takes you to the set point temperature setting
screen. The temperature can be set in a range from 0 to 500°C
Once the oven has reached the temperature, the heating elements will work
automatically to maintain the chosen temperature (red resistor line on, white
resistor line o). The heating elements will restart when the detected tempera-
ture falls 5°C below the set point.

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Cooking Timer
Light
Recipe book
Touch the timer key to set the perfect time for baking pizza (one minute in the example); when cooking is
nished, an alarm will sound.
The On/O light key manually switches the light on and o when the device is in stand-by or ON.
A maximum of 99 recipes can be stored. The recipe menu is accessed via the recipe button. A screen divided
into 2 bins will appear:
The recipe book contains a main section “OEM RECIPES”, where up to 99 recipes can be saved, and a second sec-
tion, “MY RECIPES”, where the user’s favourite recipes in the main section can be displayed. This function gives
quick access to the most frequently used recipes. The “OEM RECIPES” recipe book contains recipes uploaded
by the manufacturer or previously created recipes, or default recipes which can be used to create personalised
recipes. If a stored recipe is selected, a screen opens where it is possible to:
Storing a recipe
Phases
Use the recipe for a cooking cycle
Delete the recipe (it will be overwritten by the default recipe)
Copy the recipe
Save the recipe
Include or exclude the recipe from the favourites
To congure a recipe (with one or more phases), press one of the available phases; this will open the following
screen where it is possible to

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“WEEKLY PROGRAMMED SWITCHON" FUNCTION
Delete the phase (if there is more
than one)
Add a new phase
To go back to the ON screen
To go back to the previous page.
The “Weekly programmed switch-on" function allows the user to programme up to two recipes, each with 2
switch-ons, for every day of the week. The recipe is loaded and the oven heats up to the pre-set temperature for
the recipe. To set it o, it must be started up manually using the appropriate key.
To access the procedure, operate as follows:
1. Make sure at least one recipe has been saved and that the device is in stand-by mode; if no recipes have been
saved, the default recipe will be used.
2. Touch the key in the middle of the screen at the bottom. The following screen with the default recipe will
appear (if it is the rst time it is programmed):
To programme a switch-on, proceed as follows:
1. Select the day of the week.
2. Select one of the two recipes; choose which section to upload the
recipe from (“OEM RECIPES” or “MY RECIPES”):

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3. Activate the recipe using the OFF/ON key.
As soon as ON is pressed, two more keys will appear to set
the times.
They will be set to OFF by default but can be changed by
pressing the key:
ON will start up pre-heating of the set recipe, according to machine conguration. The HARE will start up
pre-heating in rapid heating mode if an analogue input has been congured.
4. Set the START and STOP times.
5. Once the programming for that day of the week is complete, it is possible to:
Delete the changes just made
Save the changes and exit; the controller will display the stand-by page with the
details of the rst programme closest in time
Save the changes and go to the next day.

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The weekly programme can be changed at any time by touching
the key and repeating the steps described above.
Initial information
On the Stand-by screen, touch the key to access the menu with the following options:
Setting the date and time
By selecting this option, the date and time can be changed and either the “EU” or “US” format
chosen. In the event of “multi-base” conguration, this function can only be accessed if all the
decks are in stand-by (this menu has a key which automatically puts all the ovens in stand-
by).

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Alarm list
Selecting this option allows the active alarms page to be displayed.
ALARM CODE DESCRIPTION
RTC ALARM Rtc alarm
To correct:
- Set the date and time
Chamber/top probe ALARM Chamber/top probe alarm
To correct:
- Check the type of probe; see parameter P0
- Check the device-probe connection
- Check the chamber temperature
Main results:
- The temperature regulation output will be switched o
Florro probe ALARM Floor probe alarm
To correct:
- As in the previous case, but relating to the oor
Main results:
- The temperature regulation output will be switched o
Power failure ALARM Power failure alarm
To correct:
- Check the device-power supply connection.
Main results:
- If the alarm is raised when the device is switched on or o, the device will
switch o once the power is restored.
No connection ALARM User interface-control module communication alarm
To correct:
- Check the user interface-control module connection.
Main results:
- The loads will be deactivated
Basic module compatibility
ALARM
User interface-control module compatibility alarm
To correct:
- Check the user interface-control module FIRMWARE versions.
Main results:
- The loads will be deactivated
Temperature ALARM Top/oor maximum temperature alarm
To correct:
- Check the temperature detected by the top/oor probe.
High temperature ALARM Operating temperature alarm
To correct:
- Check the operating temperature of the control module; see parameter A4
Main results:
- The vent will open, the electronics compartment fan will switch on, the top
and oor outputs and the steam generator will be switched o
Door switch input alarm
To correct:
- Check the cause of the input activation
Safety thermostat
ALARM
Safety thermostat input alarm
To correct:
- Check the cause of the input activation;
Main results:
-The top and oor outputs and the steam generator will be switched o