RED MULTIAIR User manual

service manual
r_02_0811

SERVICE MANUAL
page 2
Rev. 02
08/11 –M.C.
Service Manual –8901118900 –EN
All rights reserved
CONTENTS
1. FIVE BASIC RULES FOR INSTALLATION ............................................................................................................4
1.1. SUITABILITY OF THE ENVIRONMENT........................................................................................................4
1.2. AIR INLET ......................................................................................................................................................4
1.3. SMOKE UNION..............................................................................................................................................4
1.4. FLUE PIPE.....................................................................................................................................................4
1.5. CHIMNEY.......................................................................................................................................................4
2. COMBUSTION CONTROL ......................................................................................................................................5
2.1. The RED recipes............................................................................................................................................5
2.2. Combustion control ........................................................................................................................................5
2.3. Modify the recipe after the combustion control. .............................................................................................5
3. RED AIR AND MULTIAIR STOVES ........................................................................................................................6
3.1. Interpretation of installation............................................................................................................................6
3.2. Recipe selection for AIR and MULTIAIR products.........................................................................................8
3.3. Modifying the speed of the smoke blower fan on AIR and MULTIAIR products............................................8
3.4. RED AIR and MULTIAIR stove settings.........................................................................................................9
3.4.1. External room thermostat........................................................................................................................9
3.4.2. ECO-STOP mode ...................................................................................................................................9
3.5. Signals during operation...............................................................................................................................10
4. RED HYDRO STOVES AND THE COMPACT 24 BOILER ..................................................................................11
4.1. Adjusting the recipe in HYDRO stoves and in the COMPACT24 ................................................................11
4.2. First ignition: what to check..........................................................................................................................11
4.2.1. Regular operation of HYDRO stoves and COMPACT24......................................................................13
4.3. RED HYDRO and COMPACT24 stove settings ..........................................................................................13
4.3.1. External room thermostat......................................................................................................................13
4.3.2. ECO-STOP mode .................................................................................................................................13
4.3.3. Water temperature differential ..............................................................................................................13
4.4. Information about the operation of the appliance.........................................................................................14
4.5. Shut down, recipe adjustment and bypassing the start-up phase ...............................................................14
5. RED PELLET BOILERS: PRACTIKA 28-33 –VARIOMATIC 33.........................................................................15
5.1. Adjusting the recipe in the boilers ................................................................................................................15
5.2. The adjustment of the smoke blower (optional on Practika, standard on Variomatic).................................15
5.3. First ignition: what to check..........................................................................................................................16
5.3.1. External room thermostat......................................................................................................................18
5.3.2. ECO-STOP mode .................................................................................................................................18
5.3.3. Water temperature differential ..............................................................................................................19
5.3.4. AUX contact..........................................................................................................................................19
5.3.5. Testing individual components..............................................................................................................20
5.3.6. Regular operation..................................................................................................................................20
5.4. Information about the operation of the appliance.........................................................................................20
5.5. Special settings on boilers –TECHNICAL MENU .......................................................................................21
6. TECHNICAL PARAMETERS.................................................................................................................................22
6.1. How to access technical parameters ...........................................................................................................22
6.2. Stove parameters.........................................................................................................................................23
6.3. Boiler parameters.........................................................................................................................................27
7. FAULT SIGNALLING.............................................................................................................................................30
7.1. Alarm signal and exiting alarm conditions....................................................................................................30
7.2. Control panels and list of alarms..................................................................................................................30
7.2.1. RED AIR and MULTIAIR stove alarms .................................................................................................30
7.2.2. RED COMPACT 24 boiler alarms.........................................................................................................31
7.2.3. RED PRACTIKA 25-33 and VARIOMATIC 33 boiler alarms................................................................32
8. FAULT SOLUTIONS..............................................................................................................................................33

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8.1. LED -2 / NO ACC / A01= Start-up failed......................................................................................................33
8.2. LED -1 / ALAR NO FIRE / A02 = Abnormal fire extinguishing.....................................................................35
8.3. LED 0 / ALAR SIC FAIL / A03= Pellet tank safety thermostat.....................................................................37
8.4. LED 0 / DEP FAIL / A05...............................................................................................................................38
8.5. LED +1 / ALAR FAN FAIL / A08= Smoke blower fan ..................................................................................39
8.6. LED +2 / ALAR HOT TEMP / ALAR SOND FUMI / A04..............................................................................41
8.7. A10...............................................................................................................................................................41
8.8. A11...............................................................................................................................................................41
8.9. A13...............................................................................................................................................................41
9. SCHEDULED MAINTENANCE..............................................................................................................................43
9.1. RED AIR and MULTIAIR pellet stoves.........................................................................................................43
9.2. RED HYDRO pellet stoves...........................................................................................................................43
9.3. COMPACT 24 boiler.....................................................................................................................................44
9.4. PRACTIKA 28-33 boiler ...............................................................................................................................44
9.5. VARIOMATIC 33 boiler................................................................................................................................45
9.6. Why perform scheduled maintenance?........................................................................................................45
10. ELECTRICAL CONNECTIONS ...........................................................................................................................46
10.1. RED AIR and MULTIAIR pellet stoves.....................................................................................................46
10.2. RED HYDRO pellet stoves.......................................................................................................................47
10.2.1. RED HYDRO stoves without a DHW kit............................................................................................47
10.2.2. RED HYDRO stoves without a DHW kit for high efficiency pumps (if included)...............................48
10.3. RED PRACTIKA 28-33 boiler...................................................................................................................49
10.4. RED VARIOMATIC 33 boiler....................................................................................................................51
11. RED PRODUCTS AND THEIR ELECTRONIC AND MECHANICAL COMPONENTS.......................................52

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Rev. 02
08/11 –M.C.
Service Manual –8901118900 –EN
All rights reserved
1. FIVE BASIC RULES FOR INSTALLATION
1.1.
SUITABILITY OF
THE
ENVIRONMENT
1.2.
AIR INLET
1.3.
SMOKE UNION
1.4.
FLUE PIPE
1.5.
CHIMNEY
An open fireplace
consumes ~45m3of
air per kg of fuel.
The installation
environment must
ensure as much air
as the appliance can
consume.
Refer to the
manufacturer's
technical data
concerning fuel
consumption to
determine the
minimum size of the
installation
environment.
Adhere to the safety
distances specified
by the manufacturer
for walls and/ or
flammable surfaces.
Maintain the safety
distances from
furniture and other
furnishing items that
may be damaged by
the heat.
Insulate smoke
ducts positioned
close to flammable
materials.
Installation is not
permitted in rooms
already containing
a type-A or
ventilation hood
appliance.
This is obligatory
to ensure a correct
flow of air to
reintegrate the
oxygen consumed
by the appliance in
the installation
environment.
It is important to
create an air inlet
leading directly to
the external
environment.
Size the air inlet
correctly, according
to the dimensions
specified by the
manufacturer.
The air inlet
performs two
functions:
It provides sufficient
air intake to allow
the product to
operate correctly.
It provides air in the
environment to
compensate the air
consumed by
combustion.
The smoke
connection is the
piece of pipework
that connects the
flue pipe to the
appliance. This
connection must
adhere to
fundamental safety
and heat resistance
requirements.
The use of flexible
pipes is not
permitted.
Therefore the
connection can be
constructed using
only rigid pipes
made from:
stainless steel or
aluminised steel.
Forced outlet
products must be
connected using
airtight pipes fitted
with suitable sealing.
When connecting
closed fireplaces
only use changes of
direction with a
maximum inclination
of 45°.
Use a maximum of
three 90° bends for
pellet stoves.
The connection
must NEVER be
smaller in size at
the smoke outlet of
the appliance.
The flue pipe is a
vital element for the
discharge of smoke
and should
therefore:
Be waterproof and
thermally
insulated.
Be made of suitable
heat-proof materials
that are resistant to
the effects of
combustion
products and any
possible
condensation.
Have a vertical
arrangement with
deviations from the
axis of no more than
45° and without
kinks.
Must discharge the
smoke at the
highest point of
the home.
Comply with the
requisites specified
in the technical
table, such as the
internal cross-
section of the
chimney and the
height.
Have an internal
section which is
preferably circular.
Be cleaned if pre-
existing and has
previously operated.
Wall outlets are
forbidden for pellet
stoves.
The chimney is the
end part of the flue
pipe. Correct
draught for the flue
pipe depends on the
chimney.
The chimney must:
Have an inner
section equal to that
of the flue pipe.
Have a outlet
section of at least
double that of the
inner section of the
flue pipe.
Be built in such a
way as to prevent
rain, snow and any
foreign bodies from
penetrating the flue
pipe.
Be positioned so as
to ensure adequate
dispersion of smoke
and, in all cases,
outside the reflux
area in which back-
pressures are likely
to form.

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2. Combustion control
2.1. The RED recipes
RECIPES are preset programmes stored on the appliance mother board. These recipes contain a series of
parameters concerning the operation of the stove in all its modes.
Recipes contain, first and foremost, the values relating to the start-up and shutdown times of the geared motor and
the number of revolutions at which the smoke blower fan needs to operate at the various heat outputs.
The concept used to create recipes involves varying the intake of fuel that falls into the brazier, depending on the
quality of the flame.
2.2. Combustion control
To be certain that the correct recipe has been created, switch on the appliance and check the combustion when
the flame is stable and regular.
The flame must be yellow on the sides and white in the centre. It should not be excessively slow nor too
oxygenated. The top of the flame must be aspirated towards the top part of the combustion chamber and must
always remain within the outline of the brazier and not overflow to the sides.
The bottom must almost always be visible, given that the whole of the pellets that fall during a cycle of the geared
motor burn fully before the final load cycle.
The flame must also "pulse" (move up and down) as pellets are burnt immediately when loaded.
CORRECT FLAME
IRREGULAR FLAME
2.3. Modify the recipe after the combustion control.
A flame that is too oxygenated is low, very white and "nervous" and the embers of the pellet tend to overflow the
brazier. The most obvious fault is a flame that is always low and a tendency of the fire to go out, particularly at low
outputs.
The variations to make are as follows:
Increase the quantity of pellets falling into the brazier (by percentage)
A flame that is not very oxygenated is orange, weak and tends to produce puffs of smoke. The glass and the
ALUTEC®(white interior refractory material) get dirty and blacken quickly.
The most obvious fault is an accumulation of pellets inside the brazier. The faster the accumulation time, the
greater the variations that must be made to the recipe.
The variations to make are as follows:
Decrease the quantity of pellets falling into the brazier (by percentage)
POSSIBLE OTHER SOLUTIONS TO THE CALIBRATION PROBLEM:
If the problem persists carefully check that the seals on the door and ash drawer are working correctly, that all of
the cleaning caps on the combustion chamber are closed and that there are no obstructions in the flue pipe.
Remember that the quality of the pellets is fundamental for correct combustion and is a basic rule for the
combustion described above.

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3. RED AIR and MULTIAIR stoves
3.1. Interpretation of installation
One of the first actions to carry out to select the correct combustion parameters for our stove is to identify and
understand whether the installation that you are carrying out (or find yourself dealing with) presents any difficulties
with regard to evacuating exhaust smoke. Therefore, we have divided the installation types into three large macro
categories:
ACTIVE, meaning that the smoke connection is very short, free or almost free of bends and allows almost
direct connection in an "active" flue pipe; in other words, a flue pipe with a minimum natural draught of 0.10
mbar when warm.
These types of installation do not usually require additional adjustments as the basic recipe that
the stove leaves the manufacturer with has been designed for installation using a flue pipe with a
minimum natural draught of 0.10 mbar, as indicated in the use and installation manual of the
product.
PASSIVE, meaning that the smoke connection is more winding as it has bends and/ or a few metres of
pipework. If you are carrying out (or find yourself dealing with) an installation of this type, remember that
there are maximum parameters to adhere to. The stove is not guaranteed to operate if these parameters
are exceeded. For this type of installation:
oNever include more that three 90° bends.
oNever include more that three metres of Ø 80 mm horizontal pipework. This pipework must have a
minimum gradient of 3-5%.
oNever use counter-sloping pipes (pointing downwards).
oNever create a connection with more that six metres of Ø 80 mm pipework.
oAlways install an inspection "T" at the outlet of the appliance (avoid 90° and 45° bends).
“WALL” installations (forbidden in Italy, Germany, Austria and Switzerland according to current laws but
permitted in some European countries) carry a high degree of risk. If you decide to use this type of
installation we recommend that you adhere to the following:
oProtect the outlet of the pipework from the wind as effectively as possible.
oALWAYS use a windproof chimney (preferably one of high quality, not restricting the installation
to a simple windproof cap for boilers).
oDo not use 90° or "T" bends instead of windproof chimneys. Usually these stratagems cause a
deterioration in operation.
oAlways construct the shortest possible connection.
oAvoid using sections of non-insulated, external pipework
oAvoid vertical rises in pipework close to walls as the walls can become dirty.
oSmoke discharge below balconies, terraces and eaves should be strictly avoided. You may think
that installing the discharge in these areas better protects the outlet from the wind but, in fact, the
opposite is true. Wind nestles in these areas of the home and makes it difficult for smoke to exit.
There is also a high risk of the building become very dirty.
N.B. The manufacturer bears no responsibility for malfunctions or damage to property and persons. An
installation carried out in this manner may also invalidate the guarantee.
These types of installation normally require additional adjustments to modify either the fuel intake
or the combustion air intake. To carry out these modifications follow the general concepts of
observing the flame explained in the previous paragraph and the instructions given in the next
chapter regarding the modification of pellet dosing and the speed of the smoke blower fan.
To further help you to identify the different types of installation, some examples are given below:

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ACTIVE
50-70 cm connection to the insulated flue pipe without
bends.
Connection to an existing flue pipe with a minimum
draught of 10 Pascal (Pa) when warm.
PASSIVE
Very long connections to the flue pipe
Connections with various bends and a few metres of
pipework.
"WALL"
Direct outlets to walls (not recommended and not
permitted)
Wall outlets with bends and a few metres of pipework
+ chimney (not recommended and not permitted)

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3.2. Recipe selection for AIR and MULTIAIR products
The recipe, and therefore the intake of fuel into the brazier, is modified as follows:
TYPE OF PANEL
INSTRUCTIONS
1. Press button Erepeatedly until the led
corresponding to the variation that you wish to
make lights up. Take into account that:
LED -2 = -20% pellet
LED -1 = -10% pellet
LED 0 = no variation from the standard.
LED +1 = +10% pellet
LED +2 = +20% pellet
2. No confirmation is required as the led
corresponding to the selection made will always
remain lit during operation.
3.3. Modifying the speed of the smoke blower fan on AIR and MULTIAIR products
In addition to medicating the recipe, you can increase or reduce the power of the smoke blower in percentages (in
the same way as for pellet loading) to modify or improve combustion. This modification is carried out as follows:
TYPE OF PANEL
INSTRUCTIONS
1. Press buttons Eand D at the same time.
2. LED 0 will begin to flash. This means that the
speed of the smoke blower fan (rather than the
pellet dosage) can now be modified. If the pellets
are modified the led remains lit with a fixed light (not
flashing).
3. Press button E until the led corresponding to the
variation that you wish to make lights up. Take into
account that:
LED -2 = -20% rpm
LED -1 = -10% rpm
LED 0 = no variation from the standard.
LED +1 = +10% rpm
LED +2 = +20% rpm
4. No confirmation is required as the led corresponds
to the selection made. Simply wait 5 seconds for the
display to return to the initial status.

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3.4. RED AIR and MULTIAIR stove settings
3.4.1. External room thermostat
An external room thermostat can be connected to all appliances. To do this, the two cables from the external
thermostat must be connected directly to the motherboard.
As the internal thermostat, (controlled by potentiometer B) cannot be deactivated, it must be set to the minimum,
that is; turned fully to the left (as shown in the figure). In this way, the external thermostat will take control of the
stove as the internal thermostat is adjusted to a very low temperature and therefore always satisfied (internal
electronic contact always closed).
All types of ON-OFF timed or room thermostat are compatible with RED appliances.
Remember that using a simple ON-OFF thermostat will allow you to reduce the operating power of the stove to a
minimum when the desired room temperature has been reached.
If, on the other hand, you wish the appliance to switch off when the temperature is reached you MUST activate
the ECO-STOP function, as described in the instructions given in the next paragraph.
CONTROL PANEL
INSTRUCTIONS
1. Connect the two cables to the board as shown in
the figure
2. Rotate potentiometer B of the internal thermostat
fully to the left, in other words to the minimum
possible temperature.
3. Adjust the desired temperature on the external
thermostat.
If you wish the stove to switch off when it reaches the
temperature activate the ECO-STOP function
3.4.2. ECO-STOP mode
This function can be considered an "advanced automatic" mode that prompts the appliance to switch off when
the temperature is reached rather than simply reducing the minimum power (ECO). We recommend that you
DO NOT use the ECO-STOP function in rooms with minimal insulation or if cooling in the installation room is
very sudden. If used in these conditions the appliance will be forced to switch on and off frequently, consequently
degrading the igniter and/ or causing failed ignition as the ignition is carried out in a dirty combustion chamber and/
or brazier with obstructed holes.
TYPE OF PANEL
INSTRUCTIONS
ECO-STOP activation
1. Press ON/OFF button Dfive times in a row
within a 6 second time period
2. The board responds by sounding a long signal to
confirm (3 seconds).
To deactive ECO-STOP: as with activation, press the
ON/OFF button briefly five times in a row within a 6
second time period. The board responds by sounding a
long signal to confirm (4 seconds).

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Other instructions for a full understanding of the ECO-STOP function and how the panel signals the various
behaviours:
When the temperature is satisfied (temperature sensor on the edge of the stove satisfied or external
thermostat, if present, satisfied (open contact)) the stove enters the Eco-Stop counting phase. This phase
prompts the gradual passage from power 5 to power 1. The decrease in temperature lasts for one minute
for each power to prevent the flame from descending too suddenly.
When the first power level has been reached the appliance begins a countdown of 20 minutes. At the end
of the countdown, if the temperature is still satisfied the appliance will begin to shut down. On the other
hand, if during these 20 minutes the temperature once again becomes unsatisfactory for more than 10
seconds (to exclude a momentary indication), the count immediately zeros. If the temperature in the room
has decreased the stove will return to maximum power. If the temperature has not decreased the stove
will remain on minimum power and will restart the countdown to attempt a new shut down in ECO-STOP
20 minutes later.
When shutting down via ECO-STOP, LED1 will flash every 2 seconds with an alternating orange and
green led
When ECO-STOP puts the stove into stand-by mode LED1 will flash every 2 seconds with an alternating
orange and green led
ECO-STOP switches the stove back on when both of the following conditions are present:
At least 5 minutes have elapsed since the switch off process began;
The room temperature is at least 2 °C lower than the set temperature
(e.g.: if set to 20 °C, the stove restarts when the temperature drops below 18 °C)
If operating with an external thermostat the contact of this thermostat will control the restart.
N.B.: to exclude a momentary indication, the aforementioned conditions must remain present for 10
consecutive seconds.
When ECO-STOP switches the stove back on LED1 will flash green (as with normal ignition)
If the stove is switched off manually using the ON/OFF button with the ECO-STOP function active, ECO-
STOP will still be active the next time the stove is started up
If there is a black-out while the stove is switched on or in stand-by mode with ECO-STOP active, when the
stove restarts ECO-STOP will switch it off and then on again (if the temperature is not satisfactory, with a
delay of 120 seconds)
3.5. Signals during operation.
TYPE OF PANEL
LED 1
Off: The stove is waiting to start up
Flashing green: Start up
Fixed green: Stove on at full power
Flashing orange: Shut down
Flashing red: Alarm in progress
Fixed red: Stove switched off after alarm
If the stove switches off after a mains power failure led 1 continues to flash orange even after cooling.

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4. RED HYDRO stoves and the COMPACT 24 boiler
Unlike pellet stoves designed to heat only air, Hydro pellet stoves and boilers have all the complexities of
combining the appliance to an existing hydraulic system.
Therefore, it is essential that these appliances are correctly installed by a specialised heating engineer who
can also calculate the heat requirement of the system.
These appliances are fitted with all the necessary operating and safety devices to apply it to a CLOSED VESSEL
system and, therefore, can only operate when the pressure of the system is between 0.5 and 2.5 bar. The
recommended operating pressure is 1.0 bar when cold and/ or 1.5 bar when warm.
4.1. Adjusting the recipe in HYDRO stoves and in the COMPACT24
Unlike other air stoves, the HYDRO stove and boilers do not present any significant difficulties with regard to
selecting the recipe as the power of the smoke blower fan and the high fuel load make adjusting the combustion
much less delicate.
To set the recipe just follow the simple instructions below. However, you should do this only if there are fuel
accumulation faults or the flame is too low and weak, as explained in chapter 2.
With regard to the COMPACT 24 boiler, the flame in the combustion chamber cannot be fully seen. There is only a
small viewing window on the fire door to allow you to check whether there is a flame. Boilers, even more than
stoves, require very little adjustment. Therefore, adjustments must only be made if the fuel is not compliant or the
boiler output is low due to low/ excessive fuel intake.
Take great care not to overload the brazier. This would undoubtedly produce a better output but would
also cause continuous overheating of the structure and therefore shorten the life of the product.
With the stove is switched off, press buttons 
and at the same time
Select the recipe using buttons or 
Confirm the selection using button , keeping it
held down until the word OFF appears on the
display
The fuel load is adjusted by percentage. In other words, you can modify the pellet chute by percentage compared
to the basic standard adjustment.
The possible adjustments are: -3 = -30% pellet
-2= -20% pellet
-1= -10% pellet
0= standard adjustment by the manufacturer
+1= + 5%
+2= +10%
+3= +15%
4.2. First ignition: what to check
Always carry out a preventative check of the number of radiators and the system's potential absorption. Also
check the flow and return pipes, both in terms of the diameter and the insulation.
The stove MUST be connected to the hydraulic system using flexible pipes and inserting cut-off cocks to
isolate the appliance should it require maintenance.
Load the system with cold water using the associated filler cock located on the rear of the system or via
another filler cock on the system. Bring the pressure to 1.5 bar.
The pressure of the system must be checked using an external pressure gauge that must be installed near to
the stove (recommended), using the gauge supplied (Compact 24) or a gauge already fitted on the system, for
example the gauge already fitted on the gas boiler (if present)
SET
TURBO
1
2
6 4
3
5
!

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Check that there are no leaks from the hydraulic connections of the stove and the system. Tighten the
connections if necessary. The internal pipes are tightened dry and tested with compressed air at 4 bar.
However, an additional check is essential when the system is filled with water and pressurised.
Vent the air from the system of radiators via the associated valves.
Vent the stove via the relief valve underneath the ceramic/ steel top. If necessary, reintegrate the system to
bring the pressure to the recommended levels (1.5 bar).
Check that the room sensor (located on the rear of the system) is not touching any hot parts and is in a
suspended position to detect the temperature of the room.
Adjust the correct recipe according to procedure.
Check the calibration of the room temperature by pressing the SET button .
Use buttons and to bring the temperature to the desired level. This must be a higher temperature than
that in the room to power the appliance.
Check the calibration of the water temperature by pressing the SET button . Use buttons and to bring
the temperature to the desired level. This temperature must NEVER BE LOWER THAN 55 °C. Below this
temperature significant production and condensation problems can occur. The recommended temperature is
65 °C.
Start up the stove and wait for the water in the boiler to reach 50 °C. At this temperature the circulation pump
(water pump) begins to operate and the hot water begins to circulate in the system. When cold water returns to
the boiler the water inside the boiler itself will rapidly drop in temperature and the circulation pump will stop.
This is perfectly normal and can last 20 to 40 minutes, depending on the size of the system. When all the
water inside the system reaches a temperature above 52 °C, the circulation pump will remain permanently
active.
You can adjust the temperature at which the pump intervenes by entering the technical parameters (see
chap. 6. ) and, more precisely, by modifying parameter PR 28.
Use buttons and to modify the start up/ shut down temperature of the circulation pump. We recommend
that you do not excessively lower the temperature (MIN 40 °C) or excessively exceed the threshold (MAX
55 °C).
SET
TURBO
1
2
6 4
3
5
!
21°C
52°C
SET
TURBO
1
2
6 4
3
5
!
H2O
65°C
SET
TURBO
1
2
6 4
3
5
!
AMB
25°C

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4.2.1. Regular operation of HYDRO stoves and COMPACT24
Once the appliance reaches regular operation it autonomously selects the operating power according to the
difference between the required and desired room and water temperatures.
THE APPLIANCE OPERATES ONLY IN AUTOMATIC MODE (MANUAL mode does not exist)
The flame begins to decrease its operating power 5 °C before reaching the temperature of the water in the boiler.
This prevents the stove from exceeding the desired water temperature due to the thermal flywheel. The stove goes
into ECO mode (minimum power) when one or both of the temperatures requested (water and air) have been
satisfied.
4.3. RED HYDRO and COMPACT24 stove settings
4.3.1. External room thermostat
An external room thermostat can be connected to all appliances. To do this, connect the thermostat to the serial
port using the associated connector supplied (photo to the side). The method for operating this option is shown
below.
CONTROL PANEL
INSTRUCTIONS
1. Press buttons and at the same time to
access UT01
2. Press button several times until you reach
UT16
3. Press and hold the button 
4. While pressing this key, press button several
times at the same time until you reach UT20
5. Set the internal thermostat to OFF using button 
or 
6. Confirm the selection using button 
4.3.2. ECO-STOP mode
This function can be considered an "advanced automatic" mode that prompts the appliance to switch off when
the temperature is reached rather than simply reducing the minimum power (ECO). We recommend that you
DO NOT use the ECO-STOP function in rooms with minimal insulation or if cooling in the installation room is
very sudden. If used in these conditions the appliance will be forced to switch on and off frequently.
CONTROL PANEL
INSTRUCTIONS
1. Press buttons and at the same time to
access UT01
2. Press button several times until you reach
UT16
3. Press and hold the button 
4. While pressing this key, press button at the
same time until you reach UT19
5. Set the internal ECO-STOP to ON using keys 
or and select the number of minutes after which
you want the ECOSTOP to intervene.
6. Confirm the selection using button 
4.3.3. Water temperature differential
You can increase or decrease the temperature differential to prevent the temperature of the water in the boiler from
exceeding a value determined and set by the user. This differential is set in UT18 in sets of 10 °C. To access
SET
TURBO
1
2
6 4
3
5
!
SET
TURBO
1
2
6 4
3
5
!

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UT18, follow the same procedure used to access UT19.This interval forces the stove to decrease the operating
power if the water reaches the set temperature plus 10 °C.
Example: SET WATER TEMPERATURE = 65 °C
TEMPERATURE DIFFERENTIAL = 10 °C
At a temperature of 75 °C the stove is forced to go to minimum power to prevent the water from
overheating and boiling.
4.4. Information about the operation of the appliance
You can retrieve information about the operation of the appliance while is it switched on or during some specific
operating phases.
This information is often fundamental to solving problems or correctly diagnosing operation and faults.
CONTROL PANEL
INSTRUCTIONS
Pressing and holding down button will provide two
pieces of information:
The number of revolutions of the smoke blower
detected by the encoder (E.g.: 1840)
The instant temperature of the smoke sensor (E.g.:
103°)
4.5. Shut down, recipe adjustment and bypassing the start-up phase
Should it be necessary to alter the recipe after observing the quality of the flame, remember that the appliance
must be switched off. This is because the adjustment procedure can only be performed when the product is set to
OFF, as illustrated previously, (chap. 4.1. ).
Once the recipe has been modified, you must restart the stove and wait until the full start-up process has been
completed and the product is operating (15 to 18 minutes) before checking whether the modifications to the recipe
have had the desired effect.
To avoid having to wait for the entire start-up process to finish you can skip the entire procedure, allowing you to
check the new settings immediately. However, to carry out this operation you must ensure that:
The flame is full before switching off the product. This ensures that you have the necessary time to carry
out adjustments before the flame extinguishes normally due to lack of fuel.
The temperature sensor reads more than 60 °C
When restarted, the pellet in the chute feeds the flame or the embers that are still alive in the combustion
chamber.
If these conditions are adhered to you can restart the product and skip the entire start-up phase, arriving
immediately at the regular operation and flame checking phase.
CONTROL PANEL
INSTRUCTIONS
Shut down:
Press button for 3 seconds
Start-up:
Press button for 3 seconds
Start-up bypass:
Press button for 3 seconds when the following
instruction appear: LOAD WOOD or FIRE ON. If
the procedure has been carried out correctly these
instructions will disappear and the instructions
shown during normal operation will appear.
SET
TURBO
1
2
6 4
3
5
!
SET
TURBO
1
2
6 4
3
5
!

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5. RED pellet boilers: Practika 28-33 –Variomatic 33
Unlike Hydro stoves or the COMPACT24, these appliances are NOT fitted with all operating and safety devices
(circulating pump, expansion vessel, safety valve, relief valve, etc.). These must be installed and sized by a
specialised heating engineer who can also calculate the heat requirement of the system.
The creation and set up of the heating system is therefore subordinate to installation in compliance with
the standards and laws of the installation country. These laws normally anticipate the issue of a statement
of conformity and installation of the highest standard. Any installation not carried out in accordance with these
criteria may potentially cause malfunctions or damage to the product and the system as well as invalidating all
guarantees.
We recommend installing these products on a CLOSED VESSEL system given that the recommended operating
pressure is 1.0 bar when cold and/ or 1.5 bar when warm. If installed with an OPEN VESSEL the minimum
pressure required is 0.3 bar (3 metres of water column)
5.1. Adjusting the recipe in the boilers
The boilers do not present any difficulties in terms of adjusting combustion as the power and high fuel load make
adjusting the combustion much less delicate.
Boilers, even more than stoves, require very little adjustment. Therefore, adjustments must only be made if the fuel
is not compliant or the boiler output is low due to low fuel intake.
Take great care not to overload the brazier. This would undoubtedly produce a better output but would
also cause continuous overheating of the structure and therefore shorten the life of the product.
CONTROL PANEL
INSTRUCTIONS
M o d e : M A N U M e n u
F i r e : 1 F a n : 2
e s c S e t
< S e t t i n g >
e s c 0 S e t
- P e l l e t R e c i p e +
e s c - 2 O K
- P e l l e t R e c i p e +
1. Press the button at the TOP RIGHT of the display
to access the MENU.
2. Using the two keys at the bottom, scroll through the
various menus until you reach the SETTINGS
3. Press the button corresponding to the word SET.
4. Using the two keys at the bottom, scroll through the
various menus until you reach the PELLET
RECIPE menu.
5. Confirm by pressing the the button corresponding
to the SET key.
6. Modify the value using the bottom keys
corresponding to symbols +and -
7. Confirm by pressing the the button corresponding
to the OK key.
THE AVAILABLE VALUES ARE
- 5 = 25% decrease in pellets in all power levels.
- 4 = 20% decrease in pellets in all power levels.
- 3 = 15% decrease in pellets in all power levels.
- 2 = 10% decrease in pellets in all power levels.
- 1 = 5% decrease in pellets in all power levels.
0 = Standard adjustment by the manufacturer
1 = 5% increase in pellets in all power levels.
2 = 10% increase in pellets in all power levels.
3 = 15% increase in pellets in all power levels.
4 = 20% increase in pellets in all power levels.
5 = 25% increase in pellets in all power levels.
5.2. The adjustment of the smoke blower (optional on Practika, standard on Variomatic)
To improve smoke discharge in difficult installations or where the flue pipe does not have the required
characteristics (minimum draught 20 Pa) an additional smoke blower fan can be installed. This fan can be easily

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managed by the control panel by modifying the intake power of the fan (in percentage) until the required draught
values are reached in the flue pipe or the correct operation.
CONTROL PANEL
INSTRUCTIONS
F i r e : 5 M e n u
T . H 2 0 : 2 5 °
e s c S e t
< S e t t i n g >
e s c 0 S e t
- S m o k e B l o w e r O +
e s c - 2 O k
- S m o k e B l o w e r O +
1. Press the button at the TOP RIGHT of the display
to access the MENU
2. Using the two keys at the bottom, scroll through the
various menus until you reach the SETTINGS
menu.
3. Press the button corresponding to the word SET.
4. Using the two keys at the bottom, scroll through the
various menus until you reach the SMOKE BLOWER
OFFSET menu.
5. Confirm by pressing the the button corresponding
to the SET key.
6. Modify the value using the bottom keys
corresponding to symbols +and -
7. Confirm by pressing the the button corresponding
to the OK key.
THE AVAILABLE VALUES ARE
From -10 to +10
Each point corresponds to a 5% positive or negative
variation.
5.3. First ignition: what to check
Wash the system prior to installation and put the system into operation
Always carry out a preventative check of the number of radiators and the system's potential absorption.
Check the flow and return pipes, both in terms of the diameter and the insulation.
Check that all the cut-off cocks of the system are open or that the thermostats that control the solenoids in the
area permit opening (heat requirement from the thermostat)
The boiler must be connected to the hydraulic system, preferably using flexible pipes and inserting cut-off
cocks to isolate the appliance should it require maintenance.
Load the system with cold water using a filler cock.
Bring the pressure to 1.5 bar.
The pressure of the system can be checked using the pressure gauge supplied or the gauge already fitted on
the system, for example the gauge already fitted on the gas boiler
Check that there are no leaks from the hydraulic connections.
Check that the safety valve of the system is connected to a sewer drain.
Vent the air from the circuit using the associated valves that should be located along the system.
If there is an external thermostat ensure that it is correctly connected to the boiler.
Check the calibration of the water temperature in the boiler as indicated below:

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CONTROL PANEL
INSTRUCTIONS
F i r e : 5 M e n u
T . H 2 0 : 2 5 °
e s c 6 5 ° C O k
- T e m p . H 2 0 +
1. Press the button at the BOTTOM LEFT of the
display to adjust the desired temperature of the
water in the boiler.
2. Modify the value using the bottom keys
corresponding to symbols +and -
3. Confirm by pressing the the button corresponding
to the OK key.
Use buttons +and - to bring the temperature to the
desired level. This temperature must NEVER BE
LOWER THAN 55 °C AND HIGHER THAN 80° C.
Below 55 °C there is a risk of generating condensation
while above 80 °C there is a risk of boiling.
The recommended temperature is 65 °C.
Activate the auger to transport pellets quickly along the duct until the pellets cannot be seen or heard falling
into the brazier. Operate as follows to carry out this operation:
CONTROL PANEL
INSTRUCTIONS
F i r e : 5 M e n u
T . H 2 0 : 2 5 °
e s c S e t
< S e t t i n g >
e s c O f f S e t
< L o a d p e l l e t >
e s c O n O k
< L o a d p e l l e t >
1. Press the button at the TOP RIGHT of the display
to access the MENU.
2. Using the two keys at the bottom, scroll through the
various menus until you reach the SETTINGS
menu.
3. Press thebuttoncorrespondingto the word SET.
4. Using the two keys at the bottom, scroll through the
various menus until you reach the LOAD PELLET
5. Confirm by pressing the the button corresponding
to the SET key.
6. Select ON using the bottom keys corresponding to
symbols <and >
7. Confirm by pressing the the button corresponding
to the OK key.
8. As soon as the pellets can be seen/ heard select
OFF using the bottom keys corresponding to
symbols < and > to switch of the geared motor.
N.B. This menu is only visible when the boiler is set
to OFF.
Test the correct connection and operation of the water pump via the associated option on the control panel.
Operate as follows to carry out this operation:
CONTROL PANEL
INSTRUCTIONS
F i r e : 5 M e n u
T . H 2 0 : 2 5 °
1. Press the button at the TOP RIGHT of the display
to access the MENU.
2. Using the two keys at the bottom, scroll through the
various menus until you reach the SETTINGS
menu.
3. Press the button corresponding to the word SET.
4. Using the two keys at the bottom, scroll through the
various menus until you reach the START PUMP
5. Confirm by pressing the button corresponding to

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e s c S e t
< S e t t i n g >
e s c O f f S e t
< S t a r t p u m p >
e s c O n O k
< S t a r t p u m p >
the SET key.
6. Select ON using the bottom keys corresponding to
symbols <and >
7. Confirm by pressing the button corresponding to
the OK key.
8. As soon as the correct water circulation and the
operation of the pump can be seen/ heard, select
OFF using the bottom keys corresponding to
symbols < and > to return to normal status.
Switch on the boiler and wait for the water in the boiler to arrive at the temperature set for activation of the
pump (standard 50 °C, can be modified in the associated menu). At this temperature the circulation pump
(water pump) begins to operate and the hot water begins to circulate in the system. When cold water from the
system returns to the boiler the temperature inside the boiler itself will rapidly drop and the circulation pump
will stop. This is perfectly normal and can last several minutes, depending on the size of the system. When all
the water inside the system reaches a temperature above the set value, the circulation pump will remain
permanently active. In the time interval before the pump activation temperature is reached, the pump will
switch on for 10 seconds every minute to mix the water inside the system.
As mentioned above, you can modify the temperature at which the pump intervenes by entering the setting
menu:
CONTROL PANEL
INSTRUCTIONS
F i r e : 5 M e n u
T . H 2 0 : 2 5 °
e s c S e t
< S e t t i n g >
e s c 5 0 ° C S e t
< T e m p . O N p u m p >
e s c 5 0 ° C O k
- T e m p . O N p u m p +
1. Press the button at the TOP RIGHT of the display
to access the menu.
2. Using the two keys at the bottom, scroll through the
various menus until you reach the SETTINGS
menu.
3. Press the button corresponding to the word SET.
4. Using the two keys at the bottom, scroll through the
various menus until you reach the TEMP.ON
PUMP
5. Confirm by pressing the button corresponding to
the SET key.
6. Modify the value using the bottom keys
corresponding to symbols +and -
7. Confirm by pressing the button corresponding to
the OK key.
5.3.1. External room thermostat
An external room thermostat can be connected to all appliances.
To do this, connect the thermostat to the serial port using the associated connector.
When an external thermostat is connected to the boiler the display shows T ON. Otherwise the display shows
T OFF.
No temperature measurement is shown on the display as there if no local room sensor. The boiler only waits for
the external thermostat to close or open the contact to switch on, switch off or alter its power. If there is no external
room thermostat the power will be fully dosed on the temperature of the water in the boiler.
In the same way, it is possible to connect an external water sensor (to insert in a puffer or accumulation tank, for
example) or a domotic control unit.
5.3.2. ECO-STOP mode
This function can be considered an "advanced automatic" mode that prompts the appliance to switch off when
the temperature is reached rather than simply reducing the minimum power (ECO).
We recommend that you DO NOT use the ECO-STOP function in rooms with minimal insulation or if cooling
in the installation room is very sudden. If used in these conditions the appliance will be forced to switch on and off
frequently.

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CONTROL PANEL
INSTRUCTIONS
F i r e : 5 M e n u
T . H 2 0 : 2 5 °
e s c S e t
< S e t t i n g >
e s c O f f S e t
< E C O >
e s c O f f O k
< E C O >
1. Press the button at the TOP RIGHT of the display
to access the MENU.
2. Using the two keys at the bottom, scroll through the
various menus until you reach the SETTINGS
menu.
3. Press the button corresponding to the word SET.
4. Using the two keys at the bottom, scroll through the
various menus until you reach the ECO
5. Confirm by pressing the button corresponding to
the SET key.
6. Modify the value using the bottom keys
corresponding to symbols +and -
7. Confirm by pressing the button corresponding to
the OK key.
5.3.3. Water temperature differential
You can increase or decrease the temperature differential in the boilers to prevent the temperature of the water in
the boiler from exceeding a value determined and set by the user. This differential is set to 5 Cas standard.
Example: SET WATER TEMPERATURE = 65 °C
TEMPERATURE DIFFERENTIAL = 5 °C
At a temperature of 70 °C the stove stops in ECO-STOP mode to prevent the water in the boiler
from boiling.
To modify this parameter you must access the advanced settings in the TECHNICAL MENU –HYDRO MENU
(using the C93 password). For clearer instructions refer to chapter 5.5.
5.3.4. AUX contact
To allow functions combined with other heating devices there is an auxiliary contact on the motherboard (AUX1 or
AUX2). This contact can be used to set the temperature of the water in the boiler. Above this temperature a second
heat generator (if used) can be deactivated or an auxiliary contact can be opened.
CONTROL PANEL
INSTRUCTIONS
F i r e : 5 M e n u
T . H 2 0 : 2 5 °
e s c S e t
< S e t t i n g >
e s c 6 0 ° C S e t
< O f f A U X >
e s c 6 0 ° C O k
- O f f A U X +
1. Press the button at the TOP RIGHT of the display
to access the MENU.
2. Using the two keys at the bottom, scroll through the
various menus until you reach the SETTINGS
menu.
3. Press the button corresponding to the word SET.
4. Using the two keys at the bottom, scroll through the
various menus until you reach the OFF AUX
5. Confirm by pressing the button corresponding to
the SET key.
6. Modify the temperature value using the bottom
keys corresponding to symbols +and -
7. Confirm by pressing the button corresponding to
the OK key.

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5.3.5. Testing individual components
Individual components can be activated to check their function via the TECHNICAL MENU
CONTROL PANEL
INSTRUCTIONS
F i r e : 5 M e n u
T . H 2 0 : 2 5 °
e s c S e t
< T e c h n i c a l m e n u >
e s c S e t
< M e n u t e s t >
1. Press the button at the TOP RIGHT of the display (2)
to access the MENU.
2. Using the two keys at the bottom, scroll through the
various menus until you reach the TECHNICAL
MENU
3. Press the button corresponding to the word SET.
4. Insert password C93
5. Press the button corresponding to the word SET.
6. Using the two keys at the bottom, scroll through the
various menus until you reach the MENU TEST
7. Press the button corresponding to the word SET.
8. Choose which of the following components to activate:
oAuger
oSmoke Blower
oPump
oPellet igniter
9. Press the button corresponding to the word OK.
10. Perform the same operation in reverse to switch off the
component
5.3.6. Regular operation
Once the boiler reaches regular operation is autonomously chooses to decrease the operating power depending
on whether the thermostats request heat.
THE BOILER OPERATES ONLY IN AUTOMATIC MODE (MANUAL mode does not exist)
The boiler goes into ECO mode (minimum power) when one or both of the temperatures requested (water and air)
have been satisfied.
5.4. Information about the operation of the appliance
You can retrieve information about the operation of the appliance while is it switched on or during some specific
operating phases. This information is often fundamental to solving problems or correctly diagnosing faults.
CONTROL PANEL
INSTRUCTIONS
F i r e : 5 M e n u
T . H 2 0 : 2 5 °
e s c S e t
< I n f o >
1. Press the button at the TOP RIGHT of the display
(2) to access the MENU.
2. Using the two keys at the bottom, scroll through the
various menus until you reach the INFO menu.
3. PressthebuttoncorrespondingtothewordSET.
4. Using the two keys at the bottom, scroll through the
various menus to view the information. Specifically,
this information may concern:
oThe motherboard code
oThe motherboard safety code
oThe display code
oThe boiler operating times
oThe service time counter
oThe no. of revolutions (RPM) of the smoke
blower
oThe auger start-up time
oThe photo resistance level.