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Practika 28
Service Manual
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RED MULTIAIR, AIR, Practika 28, Practika 33, Variomatic 33 Service Manual

service manual
r_02_0811
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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Service Manual – 8901118900 – EN
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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 ~45m3 of 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 cross­section of the chimney and the height.
Have an internal section which is preferably circular.
Be cleaned if pre­existing 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 back­pressures 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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Service Manual – 8901118900 – EN
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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:
o Never include more that three 90° bends. o Never include more that three metres of Ø 80 mm horizontal pipework. This pipework must have a
minimum gradient of 3-5%.
o Never use counter-sloping pipes (pointing downwards). o Never create a connection with more that six metres of Ø 80 mm pipework. o Always 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:
o Protect the outlet of the pipework from the wind as effectively as possible. o ALWAYS use a windproof chimney (preferably one of high quality, not restricting the installation
to a simple windproof cap for boilers).
o Do not use 90° or "T" bends instead of windproof chimneys. Usually these stratagems cause a
deterioration in operation.
o Always construct the shortest possible connection. o Avoid using sections of non-insulated, external pipework o Avoid vertical rises in pipework close to walls as the walls can become dirty. o Smoke 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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Service Manual – 8901118900 – EN
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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 E repeatedly 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 E and 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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Service Manual – 8901118900 – EN
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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 D five 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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Service Manual – 8901118900 – EN
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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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Service Manual – 8901118900 – EN
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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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Service Manual – 8901118900 – EN
All rights reserved
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
page 16
Rev. 02
08/11 – M.C.
Service Manual – 8901118900 – EN
All rights reserved
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:
page 17
Rev. 02
08/11 – M.C.
Service Manual – 8901118900 – EN
All rights reserved
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 the button corresponding to 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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