Handleiding MCZ Curve COMFORT AIR (pagina 17 van 40) (Engels)

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INSTALLATION GUIDE EN

SEALED PELLET STOVE

CURVE

comfort Air

- part 2 -

Instructions in English

TABLE OF CONTENTS

TABLE OF CONTENTS .................................................................................................. II

10FIRST STARTUP .....................................................................................................3

11REMOTE CONTROL MAX ..........................................................................................4

12EMERGENCY PANEL ..............................................................................................11

13OPERATION .........................................................................................................13

14SAFETY DEVICES ..................................................................................................17

15ALARMS ..............................................................................................................18

16RECOMMENDATIONS FOR SAFE USE .......................................................................24

17CLEANING ...........................................................................................................25

18FAULTS/CAUSES/SOLUTIONS .................................................................................34

19CIRCUIT BOARD ...................................................................................................37

10-FIRST START-UP

PRECAUTIONS BEFORE START-UP

GENERAL PRECAUTIONS

Remove all parts that may burn from the brazier and the glass (manual, various adhesive labels or any polystyrene).

Check that the brazier is positioned correctly and rests properly on the base.

The rst start-up may not be successful as the feed screw is empty and does not always manage to load the required

amount of pellets in time to light the ame.

ELIMINATE THE ALARM CONDITION OF A FAILED START-UP BY POSITIONING THE OF THE EMERGENCY PANEL TO OFF FOR

ABOUT 20 SECONDS AND BRINGING SELECTOR “D” BACK TO THE REMOTE POSITION. REMOVE THE PELLET LEFT IN THE

BRAZIER AND REPEAT THE START-UP. (SEE “SAFETY DEVICES/ALARMS” PARAGRAPH)

If after repeated attempts, the ame fails to ignite, despite a regular ow of pellets in the brazier, which must rest snugly against the

slots. If no anomaly is found during this inspection, there may be a problem with the product components or installation may not be

correct.

REMOVE THE PELLETS FROM THE BRAZIER AND CONTACT AN AUTHORISED TECHNICIAN.

Do not touch the boiler during the rst lighting, as it is during this phase that the paint sets. If you touch the paint,

you may expose the steel surface.

If necessary, touch up the paint with the spray can of the specic colour. (See “Pellet stove accessories”)

It is good practice to ensure eective ventilation in the room during the initial start-up, as the boiler will emit some

smoke and smell of paint.

Do not stand close to the stove and, as mentioned, air the room. The smoke and smell of paint will disappear after about an hour of

operation, however, they are not harmful in any case.

The boiler will be subject to expansion and contraction during the lighting and cooling down stages, and may therefore make slight

creaking noises.

This is absolutely normal as the structure is made of laminated steel and must not be considered a defect.

It is extremely important to make sure the boiler does not reach high temperatures straight away, but to increase the temperature

gradually using low power at rst.

This will prevent damaging the ceramic or serpentine stone tiles, the welds and the steel structure.

DO NOT EXPECT HEATING EFFICIENCY IMMEDIATELY!!!

11-REMOTE CONTROL MAX

GENERAL FEATURES OF THE LCD REMOTE CONTROL

The remote control works at a transmission frequency of 434.5 MHz. Power the product with 3 AAA batteries as follows:

Remove the battery compartment cover by sliding it downwards (according to the arrow).

Insert the batteries according to the correct polarity (+) and (-).

Close the battery compartment cover.

When the remote control is powered it automatically prompts to set the time.

The remote control has a special icon on the display to indicate when the batteries are almost at. If the at battery icon appears, the

batteries are almost at and the remote control is about to switch o.

Used batteries contain metals which are harmful to the environment, so they must be disposed of separately in

appropriate containers.

GRAPHIC APPEARANCE

In the instructions we will often refer to the indications of the keys shown in the gure. Always keep it at hand for simplicity’s sake.

MAN

12:02

MAX

°C

12:03

°C

AUTO

11-REMOTE CONTROL MAX

REMOTE CONTROL OPERATION

General rules

By pressing key A for 1” the product is switched on and o. Key C is used to make all changes. Key E is used to conrm the changes. By

pressing key B one selects the product operating mode. Via key D one browses the FAN and SLEEP setting. Whichever the mode is, press

key A briey (or leave the keypad idle for 7”) to go back to the initial display.

INITIAL SETTINGS

Setting the time

Both with the remote control on and o, by pressing keys B+E at the same time for 3” one accesses the time/day setting mode.

The hour digits will start to ash; they can be changed with key C. By pressing key E the changes are conrmed.At this point the minutes

digits will start to ash.

Follow the same modify/conrm procedure, one will then go onto the time display mode (12h or 24h) and nally

the day will start to ash. Conrm this data to exit the settings.

NOTE: each time the remote control is powered, the time is reset and the display automatically enters the time setting mode.

°C – °F setting

Only with the stove switched o, by pressing key B for 5” one changes the unit of measure of the temperature, from Celsius to Fahrenheit

and vice versa.

SETTING THE OPERATING MODE

With the remote control switched on, key B allows to set one of the 4 product operating modes. Figure 1-2-3-4

displays the 4 basic displays, respectively: Manual, Automatic, Timer and Eco mode.

MANUAL Mode (MAN)

In this mode one can set the ame power manually (5 levels - act directly on key C to change). Figure 1

AUTOMATIC Mode (AUTO)

In this mode one can set the desired room temperature, and the stove will modulate the ame power automatically to reach the

temperature. Figure 2

If a fan is AUTOMATICALLY set, its speed depends on the power that is running the stove:

In the case of power level 1: V=1

In the case of power level 2: V=2

In the case of power level 3: V=3

In the case of power level 4: V=3

In the case of power level 5: V=3

FIG.1 FIG.2

MAN

12:02

MAX

°C

11-REMOTE CONTROL MAX

MANUAL POWER FUNCTION

this function allows you to set the power of the ame from a minimum of 1 to a maximum of 5. The power levels correspond to a dierent

value of fuel consumption, setting 5 heats the room in less time and setting 1 can keep the room temperature stable for a longer period of

time. The set ame is automatically set to a minimum when the set temperature value is reached.

if the bars are all full, the stove is on ame power 5

if only one bar is full, the stove is on ame power 1

If the ventilation is MANUALLY set, the function which limits the maximum power of the stove according to the ventilation is enabled.

COMFORT AIR (2 FANS): maximum power level = total of the levels of ventilation.

Even if the power limit is enabled, the display on the remote control does not consider the power limit for ventilation eect.

FLAME POWER

8:20

°C

TIMER

°C

12:06

°C

ECO

12:07

°C

TIMER

ECO

11-REMOTE CONTROL MAX

TIMER Mode (TIMER)

Select this operating mode to switch the product on and o automatically, according to 6 customised time slots (P1 – P6). The following

can be set for each time slot:

• Switch-on time

• Switch-o time

• Desired room temperature in the time slot

• Days of the week in which the time slot is active

When the stove is switched on (manually via key A or automatically via a time slot) the product works in the

automatic mode described above. A time slot appears automatically when it is active (P1 in gure 3) and the desired temperature is

changed according to the value set in the time slot. However, the user can always modify this value as desired and in real time.

Refer to the relevant paragraph to learn how to set the time slots.

ECO Mode (ECO)

This mode is activated/disabled with the remote control switched on by pressing key B for 5”.

ECO is an automatic mode with the only dierence that if the set temperature is reached and remains so for the following 20 minutes

(despite ame modulation), the product switches o and remains on stand-by until the room temperature drops 2 degrees below the

desired temperature (and in any case for at least 5 minutes from the last shutdown). The product is then switched on again. Figure 4

If the room is not suciently insulated, ame modulation does not allow the set temperature to stay satised for 20 consecutive minutes

and the product will not switch o.

NOTE: It is recommended to use the ECO mode only in well-insulated rooms in order to prevent start-up and shutdown

from occurring within short periods of time.

The remote control remains on even when the product is o when in ECO mode, in order to indicate that this shutdown is only

temporary. Obviously, if the product is switched o via key A, ECO mode is exited and the product remains o.

Up to 6 automatic start-up and shutdown time slots (E1 – E6) can also be set in ECO mode, which are independent

from those of TIMER mode (P1 – P6). If they have been activated, TIMER-ECO appears on the display (gure 5) permanently, even if the

remote control is switched o.

Refer to the relevant paragraph to learn how to set the time slots.

NOTE: If the remote control is switched o due to TIMER, ECO cannot be restarted until the user intervenes (key A) or

when the next valid time slot starts. Combined use of TIMER and ECO modes requires a good knowledge of the product

operating logic.

FIG.3 FIG.5FIG.4

°C

11-REMOTE CONTROL MAX

Room ventilation

Room ventilation can be adjusted as desired in all 4 operating modes described above (Manual, Automatic, Timer, Eco). Simply perform

this operation: from the basic display, press key D to access the VENTILATION adjustment mode (Fig. 6). Then press key C (arrows) to set the

desired ventilation by selecting one of the 5 levels available, independent from the ame level.

The “auto” option can also be selected, which automatically links the room ventilation speed to the ame level.

In short:

ame set on 1 > ventilation set on 1; ame set on 3 > ventilation set on 3; ame set on 5 > ventilation remains set on 3 (for silent

operation as it is in automatic mode).

In products with 2 room fans (comfort air models) via key D one can scroll and set the speed of the individual fans (identied with 1 or 2

above the level bars).

NOTE: In the event a replacement remote control is purchased, if you need to change the default setting, proceed as

follows: with the remote control switched on press buttons D + E at the same time for 10 seconds (until the ashing

number appears). Press key C to select 1 or 2 according to the product to which the remote control is to be paired, and

press E to exit.

IMPORTANT! Choosing the right number of fans can become a decisive factor to ensure the stove works correctly. Therefore

ensure an authorised technician conducts the settings.

The list of fans in place is shown in the table:

STOVE MODEL NO. OF FANS

CURVE COMFORT AIR 2

FIG.6

MAN

21:11

OFF

23:00

MAX

°C

MAN

21:11

°C

MAN

21:11

°C

11-REMOTE CONTROL MAX

Sleep function

The sleep mode allows to quickly set the time at which the product must switch o. This function is only available in MAN and AUTO mode.

It is set as follows: from the POWER setting (by pressing key D - see previous paragraph), press key D again to access the SLEEP mode

setting.

Via key C one can adjust the shutdown time in 10 minute intervals.

By conrming with D or E one goes back to the basic display, in which the sleep mode shutdown time is any case visible (gure 7).

To disable the SLEEP mode simply access the settings, decrease the time until the dashes appear and conrm.

NO AIR FUNCTION (SF)

The NO AIR function allows the stove to operate at the minimum power throughout the night, with no room ventilation. This function is

only available in AUTO and MAN mode(not in TIMER mode). Proceed as follows to set it:

from the VENTILATION setting (by pressing key D), press key D again and you will access theSLEEP setting mode.

From when the dashes “--“ are displayed, press the lower key C and the NO AIR function is activated (SF appears); by conrming with D

or E one goes back to the basic display in which SF and the moon remain visible.

Once the function is activated, the ame power goes to 1 and the ventilation switches o within about 10 minutes.

When this function is active, nothing happens when the C keys are pressed. To disable the NO AIR function, access the SLEEP setting, press

upper key C to make the dashes “--“ appear and conrm with keys D or E.

FIG.7

TIMER

6:30

8:00

OFF

°C

TIMER

ECO

OFF ON

11-REMOTE CONTROL MAX

TIMER settings

TIMER time slot display

In TIMER mode, to display the time slots simply press key D for 2”. With key C one can scroll the 6 time slots freely, quickly checking the

saved settings (gure 8). By pressing key D or A one goes back to the basic display.

Modifying the TIMER time slots

To modify a time slot, display it as described in the previous paragraph and then press key E. The rst parameter to be set will start to ash,

i.e. room temperature. Press key C to modify the value and key E to conrm and set the next parameter. The parameters of a time slot can

be set in the following sequence:

• Room temperature. Can be set between 5° and 35°C. 2 dashes “--” appear if set below 5°C or above 35°C, and if this is conrmed, the

programme is disabled(therefore, the product will not be switched on).

• Switch-on time. The value is adjusted in 10 minute intervals (from 00:00 to 23:50)

• Switch-o time. The value is adjusted in 10 minute intervals (from 00:10:00 to 24:00).

• Days of the week in which the programme is active. Monday (MO) will start to ash, followed by the other days of the week. Use key

C to activate/disable the day. The activated days will be displayed on a dark background. When the Sunday (SU) setting is complete,

press key E to exit the editing page and return to the time slots display.

By pressing key D at any time one exits the time slot editing mode, saving all variations conrmed with key E up to that time, and one

goes back to the time slot display condition.

While by pressing key A (or leaving the keypad idle for 30”) one goes directly to the basic display, saving all variations conrmed with key

E up to that time.

Activating the TIMER-ECO time slots

In ECO mode one can activate up to 6 time slots, customising switch-on and switch-o (E1 – E6): by pressing key D for 2” the TIMER

activation/disabling function will appear (gura 9). If the ON option is conrmed one can display/modify the 6 time slots of the TIMER-

ECO with the same procedure described previously for the TIMER. By conrming the OFF option, the TIMER is disabled and the product goes

back to operate in ECO mode without active time slots.

REMOTE CONTROL SYNCHRONIZATION

When the product is started up for the rst time, it may be necessary to synchronize the new remote control with the stove. To do this,

follow these simple instructions:

• connect the socket to the stove and turn on the power switch

• make sure the selector D on the emergency panel is in the REMOTE position

• when the rst message appears on the emergency panel’s display, use a pointed object to press the chased G button (toothpick, etc.)

• the panel’s display will show 3 ashing lines “---“. Press the remote control’s on/o button to launch the learning process.

The three ashing lines will disappear from the display and the stove will learn the remote control’s new communication address.

The learning process is also conrmed by an audio signal.

11-REMOTE CONTROL MAX

The emergency panel is found at the back of the stove. The panel is used to detect any malfunctions and also for product control if the

remote control is not working.

KEY

A - DISPLAY; indicates a series of information on the stove, as well

as the identication code of any malfunction.

B - GREEN LED that indicates:

• OFF = Stove o

• FLASHING ON = Stove in ignition stage

• FIXED ON = Stove on

C - RED LED that indicates:

• OFF = Stove on

• ON WITH SLOW FLASHING = Stove in shutdown stage

• ON WITH FAST FLASHING = Stove in alarm conditions

(combined with a beep sound for the rst 10 minutes)

• FIXED ON = Stove o

D - Three-position selector for the following functions

• OFF = Stove switched o manually without remote control

• REMOTE = Stove controlled exclusively from the remote

control

• ON = Stove switched on manually without the remote control

E - Three-position selector to select the power

• MIN = Selector to make the stove work at MINIMUM power

without the remote control and with selector 4 on ON

• MED = Selector to make the stove work at MEDIUM power

without the remote control and with selector 4 on ON

• MAX = Selector to make the stove work at MAXIMUM

power without the remote control and with selector 4 on

F - Button for diagnostic functions relating to the operating

status of the stove

G - Button to put the stove in communication with a new remote

control (via the procedure explained in the Remote Control

Synchronisation" paragraph)

H - Reception antenna

SELECTOR "D" MUST BE SET ON "REMOTE" TO

MAKE THE STOVE OPERATE WITH THE REMOTE

CONTROL.

11-REMOTE CONTROL MAX

INSTALLATION OF THE CONTROL PANEL ANTENNA

• Take Antenna “A” from the bag containing the instructions

• Tighten Antenna “A” clockwise on screw “V” near the control panel until the mobile part of the antenna is at the top.

Attention! Fully tighten the antenna without forcing it so as to avoid damaging the reception.

I/ON

11-REMOTE CONTROL MAX

ELECTRICAL CONNECTION

First connect the power cable to the back of the stove and then to a wall socket.

The main switch must only be activated to switch the stove on; otherwise, it is advisable to keep it switched o.

It is recommended to disconnect the power cable when the stove is not used.

The cable must never come into contact with the smoke exhaust pipe or any other part of the stove.

STOVE POWER SUPPLY

After connecting the power cable to the back of the stove, turn the switch to (I) or ON.

The stove is then powered.

There is a fuse box also in the switch block next to the power socket. Open this compartment by simply lifting the cover, using a screwdriver

as a lever from inside the power outlet compartment. Inside there are two fuses (3.15 A delayed), which may need to be replaced if the

stove is not powered (e.g. the ON/OFF button does not go on or the control panel display does not light up) - operation to be implemented

by an authorised and skilled technician.

ELECTRICAL STOVE CONNECTION

STOVE POWER SUPPLY

STOVE SWITCH

FUSE COMPARTMENT

OFF

11-REMOTE CONTROL MAX

Switch-on/o from the emergency panel

If the remote control is faulty or the batteries are at, the product can be operated in safe mode via the rear emergency panel.

In this conguration, the stove can only operate in manual mode and with the possibility to choose between 3 power levels.

• SWITCHING THE STOVE ON WITHOUT THE REMOTE CONTROL

To switch the stove on move selector “D” to the ON position. The RED LED goes o upon start-up, while the GREEN LED starts to ash until

the start-up stage is complete. Once the product is in steady state, the GREEN LED remains on.

• CHOOSING THE POWER WITHOUT THE REMOTE CONTROL

One can choose between 3 heating powers:

MIN-MED-MAX (seletctor “E”)

The MINIMUM power corresponds to the 1

power;

The MEDIUM power corresponds to the 3

power;

The MAXIMUM power corresponds to the 5

power;

• SWITCHING THE STOVE OFF WITHOUT THE REMOTE CONTROL

To switch the stove o move selector “D” to the “OFF” position.

Once the remote control is restored, remember to set selector “D” back to the “REMOTE” position, otherwise the

product will ignore the remote control commands.

11-REMOTE CONTROL MAX

Feed screw loading function

This function can only be activated when the stove is o and allows the pellets to be loaded into the loading system (feed screw). It can

be used each time the pellets nish in the hopper (see alarm A02). It is useful to prevent failed start-ups (alarm A01) due to the hopper

being empty.

Enable the function as follows:

• Set the rst selector to OFF

• Set the second selector to MED

• Make sure that OFF appears on the display because this function can only be activated with the stove completely cold (o) and the

selector set to OFF.

• Press the TEST key 3 times consecutively within 2 seconds

• “OnPlt” will appear on the display in two subsequent intervals.

• Press the TEST key once again when the pellets begin to fall into the brazier to end the FEED SCREW LOADING function or wait for

the function to end alone (approx. 3 minutes).

• Proceed with lighting the stove.

11-REMOTE CONTROL MAX

Modifying the pellet recipe

This function is for adapting the stove to the type of pellet in use. As there are many types of pellet available on the market, operation of

the stove can vary considerably according to the quality of the fuel.

The amount of pellets in the brazier can be increased or reduced:

• If the pellets tend to jam in the brazier due to an excess of fuel

• If the ame is increasingly higher even at low power values

• Proceed as follows if the ame is always low in order to change the recipe:

• Set the two selectors to OFF (the stove must not be in an alarm status)

• Press the TEST button for 5/9 seconds (the stove emits 5/9 beeps)

• Release the TEST key

• The code PLt appears on the display

• Press the chased button to increase or reduce the desired amount of pellets.

Available values:

- 3 = Reduction of pellet loading by 20% at all power values

- 2 = Reduction of pellet loading by 13% at all power values

- 1 = Reduction of pellet loading by 6% at all power values

0 = no change

1 = Increase of pellet loading by 10% at all power values

2 = Increase of pellet loading by 6% at all power values

3 = Increase of pellet loading by 3% at all power values

• Press the TEST key once to conrm

14-SAFETY DEVICES

SAFETY DEVICES

The product is tted with the following safety devices.

SMOKE TEMPERATURE PROBE

It detects the temperature of the smoke, thereby enabling start-up or stopping the product when the temperature drops below the preset

value.

PELLET HOPPER TEMPERATURE PROBE

If the temperature exceeds the preset safety value, it immediately stops the product, which must cool down before the stove is restarted.

ELECTRICAL SAFETY

The product is protected against power surges by a general fuse located in the control panel on the back. Other fuses that protect the

electronic boards are found on the latter.

SMOKE FAN BREAKAGE

If the fan stops, the circuit board promptly blocks the supply of pellets and the alarm is displayed.

GEAR MOTOR BREAKAGE

If the gear motor stops, the product switches o and the relative alarm is signalled.

TEMPORARY POWER CUT

If a power cut occurs during operation, the product automatically sets itself in cooling mode when the power is restored and then it

restarts.

FAILED START-UP

If no ame lights during start-up, the product will go into alarm conditions.

TAMPERING WITH THE SAFETY DEVICES IS PROHIBITED.

It is possible to relight the product and therefore restore the automatic operation of the probe only after having eliminated the cause of

the intervention of the safety system. This manual will help you understand which anomaly has occurred, and explain how to intervene

according to the alarm message displayed on the appliance.

15-ALARMS

ALARM ALERTS

In the event an operating anomaly occurs the stove starts switching o due to the alarm and informs the user of the type of

fault that has taken place via a 3 digit code which stays displayed on the rear emergency panel.

The alarm is indicated permanently by the relative 3 digit code, by a ashing red LED that lights up on the emergency panel and an

intermittent sound signal for the rst 10 minutes of the alarm. Read the instructions in the following 2 paragraphs to cancel the alarm

status and restore the normal operating mode of the stove.

The following table describes the possible alarms indicated by the stove, associated to the respective code that appears on the emergency

panel and helpful tips to solve the problem.

MESSAGE ON DISPLAY TYPE OF PROBLEM SOLUTION

A01

The ame does not light Check the level of pellets in the tank.

Check that the brazier is correctly positioned in its seat

and has no build-up or unburned material.

Make sure the ignition plug warms up.

Thoroughly empty and clean the brazier before restarting.

A02

The ame is goes out unexpectedly Check the level of pellets in the tank.

Check that the brazier rests correctly in its seat and has no

visible deposits of unburned pellets.

A03

The temperature of the pellet hopper

exceeds the required safety threshold.

The structure overheats due to reduced

heat dissipation.

The structure is too hot because the product has been

used for too long at the maximum power or there is

poor ventilation. When the product is suciently cold,

press button B on the control panel or OFF on the remote

control to cancel alarm A03. Once the alarm is cancelled,

the product can be switched on normally.

A04

The temperature of the exhaust smoke has

exceeded certain preset safety limits.

The stove switches o automatically. Let the stove cool

down for a few minutes and then switch it on again.

Check the smoke expulsion and verify the type of pellet

used according to the instructions found in Chap. 2 of this

manual.

A05

Chimney ue clogged - wind - door open. Check the smoke duct and make sure the door is closed.

The smoke extractor fails to guarantee

sucient primary air, required for correct

combustion.

Draught diculties or brazier clogged.

Check whether the brazier is clogged and clean it, if

necessary.

Check and if necessary clean the smoke duct and air inlet.

A08

Abnormal operation of smoke fan Check cleanliness of the fumes fan compartment and

check if dirt is blocking it. If this is not enough, the smoke

fan is faulty. Contact an authorised service centre to have

it replaced.

A09

The smoke probe is faulty and does not

detect the exhaust smoke temperature

properly.

Contact an authorised service centre to have the

component replaced.

A11

Pellet supply fault Contact an authorised service centre to have the

component replaced.

15-ALARMS

A13

Electronic control unit overheating The structure is too hot because the product has been

used for too long at the maximum power or there is

poor ventilation. When the stove is suciently cold,

press button B on the control panel or OFF on the remote

control to cancel alarm A13. Once the alarm is cancelled,

the product can be switched on normally.

A14

Faulty air ow rate sensor This alarm does not block the stove, just a warning is

displayed. Contact an authorised service centre to have

the component replaced.

A18

TRIPPED SAFETY

DEVICES

Open stove door Close the door

Open fuel loading hatch Close the hatch. Lower the fuel level in the tank.

Air pressure switch Draught diculties or brazier clogged.

Check whether the brazier is clogged by scaling and clean

it, if necessary.

Check and if necessary clean the smoke duct and air inlet.

SER

Routine maintenance alert When this ashing message appears upon start-up

it indicates that the preset operating hours before

maintenance is due have elapsed and that an MCZ

qualied technician must be contacted for maintenance.

Exiting the alarm conditions

Follow the procedure described below to restore normal stove operation after an alarm has been triggered:

• Put selector D on the rear emergency panel on OFF for a few seconds (about 20 seconds), until the 3 digit alarm identity code

disappears. The red LED stops ashing and the sound signal is silenced by performing the steps below.

• Put selector D back in the REMOTE position, to control the operation of the stove via the remote control.

• Switch o the remote control and switch it on again if one wants to restart the stove.

15-ALARMS

Mechanical stove block

The following conditions may cause the mechanical stove block:

• Structure overheating (“A03”)

• Smoke overheating (“A04”)

• During stove operation air has entered the combustion chamber or there is an obstruction in the ue (“A05”)

The block is signalled on the display and with a sound signal. In this situation the shutdown stage is activated automatically.When this

procedure is started, any test operation to restore the system is useless. The display signals the cause of the blockage.

SOLUTIONS:

If “A03” appears: the structure is too hot because the product has been used for too long at the maximum power or there is poor ventilation.

When the product is suciently cold, press button B on the control panel or OFF on the remote control to cancel alarm A03. Once the

alarm is cancelled, the product can be switched on normally.

If “A04” appears: The stove switches o automatically. Let the stove cool down for a few minutes and then switch it on again. Check the

smoke expulsion and verify the type of pellet used according to the instructions found in Chap. 2 of this manual.

If “A05” appears: the door has been left open for too long or a signicant amount of air has entered (e.g. missing smoke fan inspection

cap). If these causes are excluded, check and if necessary clean the smoke duct and ue. (it is recommended that this operation is carried

out by an MCZ qualied technician.

The product can be switched on again only after having eliminated the cause permanently.

15-ALARMS

In the event that alarm A18 is triggered often, please note that:

A18

INTERVENTO

SICUREZZE

Porta stufa aperta Chiudere la porta

Sportello di caricamento combustibile

aperto

Chiudere lo sportello.

Abbassare il livello di combustibile nel serbatoio.

Pressostato aria Dicoltà di tiraggio o intasamento del braciere.

Vericare se il braciere è intasato dalle incrostazioni ed

eventualmente pulirlo.

Controllare ed eventualmente pulire il condotto fumario

e l’ingresso dell’aria.

you must check some points to verify the cause of the problem and possibly act on some adjustments and/or safety devices to restore the

correct operation of the product.

However please note that all the adjustments and alterations aecting the operational safety devices, must only be performed if THE

PRODUCT IS INSTALLED IN COMPLIANCE WITH THE STANDARDS AND LAWS IN FORCE AND IF IT IS SERVICED PROPERLY BY AUTHORISED AND

SPECIALISED PERSONNEL. Alterations performed randomly, to ensure operation of the product even in the non-compliant conditions, can

cause serious damage to property and injuries to people. If this occurs, the manufacturer declines all liability

Attention!

The adjustments must only be carried out by authorised and qualied personnel under their responsibility and

by checking the conformity of the installation beforehand. The manufacturer declines all liability for damage to

property or injuries to people in the event of altering the safety devices.

As mentioned alarm A18 identies a drop in pressure inside the product that can be generated by diculty to discharge the fumes (ash

clogging the ue), to draw combustion air (clogged ducting or no air inlet) or by opening some stove compartments (re door or pellet

tank cover)In light of the above, before acting on the safety devices or on any adjustments, you must check in this sequence if there are

any potential malfunctions that may generate the alarm. Therefore check that:

• The stove door is closed

• The installation is compliant and the ue/smoke tting does not generate obvious obstructions which can stop the release of smoke,

such as: long horizontal sections (over 3 metres), uninsulated smoke ducts, “wall-mounted” smoke exhaust without proper terminals

(installation regulated and permitted in France only [ZONE 3])

• The minimum depression in the ue is at least 5 Pa

• The pellets are of certied quality and do not cause obstructions

• There is no ash clogging the ue and the latter is serviced properly.

• There are no foreign bodies in the ue (nests, birds, grilles, leaves etc..)

• There are no foreign bodies in the combustion air ducting and/or in the room air inlet

• When installed without combustion air ducting, it is crucial to check that there is an ecient air inlet dedicated to the stove,

according to the specications referred to in chapter 2 of this manual.

• That there are no internal air extraction or recirculation systems (e.g. VMC systems) that generate internal depressions exceeding

those required by law (not exceeding 4 Pa)

• That the pressure switch is not damaged or dirty (inspection to be performed by an authorised service centre)

• That the stove gasket (re door, pellet tank, etc..) is not worn or damaged. Otherwise contact an authorised service centre for

replacement/repair

Attention!

All liability for improper use of the product is entirely borne by the user and relieves the Manufacturer from any civil

and criminal liability.

15-ALARMS

If all the above checks are negative, it is likely that the depression inside the stove drops due to poor performance of the ue, especially

when the machine is operating at minimum speed for a long time.

In this case it is possible to make small adjustments that allow you to increase the operating speed of the smoke fan to increase the

depression inside the product, or make it less sensitive to the intervention of the pressure switch by changing its position mechanically.

While the rst adjustment has no impact on the level of safety, the second one described aects it considerably and therefore should only

be performed by authorised and specialised personnel after carrying out all the inspections mentioned above.

Changing the smoke fan revolutions

In order to further improve combustion in critical conditions, you can change the percentage of the parameters for the minimum amount

of incoming combustion air. These changes can be performed upwards in the event of serious diculties in evacuating smoke and/or air

intake or downwards in the event of excessive draught of the ue.

• Set the two selectors to OFF (the stove must not be in an alarm status)

• Press and hold down the TEST button. The panel will produce a series of beeping sounds in sequence.

• Release the key after 20 to 24 beeping sounds.

• The code rAC appears on the display

• Press the chased button to change the values

AVAILABLE VALUES

-2 -10%

-1 -5%

0 0% (default value)

+1 + 5%

+2 +10%

• Press the TEST key once to conrm

45°

15-ALARMS

Changing the position of the pressure switch

ATTENTION!

All the operations must be performed with the product completely cold and the plug disconnected. Disconnect the

product from the 230V power supply before performing any operation.

One can then act on the air pressure switch by changing the installation position. The pressure switch is tted behind the electronic board

of the stove.

To change the position of the pressure switch, which by default is in

an upright position, proceed as described below:

• remove the side covering of the stove

• remove the back panel of the stove

• unscrew the two screws “v” and remove the entire block “H”

consisting of a board support, board and pressure switch

• remove board “S” from the support

• remove screws “r” that block the pressure switch “P” in a vertical

position

• Tilt the pressure switch by 45° and use the designated holes to

secure it with screws “r”

• reassemble everything

PLEASE NOTE There are two small tubes coming out of the pressure switch, one connected to the pressure transducer and

the other one to the tank. For the shift there is no need to remove this connection, also to avoid reassembly errors.

There might be the need to disconnect some cables when disconnecting the electronic board.

Attention! All the adjustments must be performed solely by authorised and qualied personnel.

16-RECOMMENDATIONS FOR SAFE USE

ONLY CORRECT INSTALLATION AND APPROPRIATE MAINTENANCE AND CLEANING OF THE APPLIANCE CAN GUARANTEE

CORRECT OPERATION AND SAFE USE OF THE PRODUCT.

We would like to inform you that we are aware of cases of malfunctioning of domestic pellet-fuelled heating products, mainly due to

incorrect installation and use, as well as inadequate maintenance.

We would like to assure you that all of our products are extremely safe and certied according to European standards of reference. The

ignition system has been tested with the utmost attention to enhance ignition eciency and to prevent any type of problem, even in the

worst operating conditions. In any case, like for any other pellet-fuelled product, our appliances must be installed correctly and undergo

regular periodical cleaning and maintenance to guarantee safe operation. Our studies show us that malfunctioning is mainly due to the

combination of part or all of the following factors:

• Brazier holes obstructed or brazier deformed, due to lack of maintenance and conditions which can cause delayed ignitions,

generating an anomalous production of unburned gases.

• Insucient combustion air due to a reduced or clogged air inlet duct.

• Use of smoke ducts nonconforming to regulatory installation requirements, failing to guarantee an adequate draught.

• Partially clogged chimney, due to lack of maintenance, reducing the draught and making ignition dicult.

• End chimneypot nonconforming to the indications of the instruction manual, and therefore not suitable to prevent potential inverse

draught.

• This factor is crucial when the product is installed in especially windy areas, such as coastal regions.

The combination of one or more of these factors could generate important malfunctioning conditions.

To keep this from occurring, it is fundamental to guarantee that the product is installed in compliance with standards in force.

Furthermore it is of the utmost importance to respect the following simple rules:

• Every time the brazier is removed for cleaning, it must always be put back properly in the work position before using the product,

completely removing any residual lth left on the support base.

• Pellets must never be loaded in the brazier manually, either before ignition or during operation.

• The accumulation of unburned pellets ensuing a failed ignition must be removed before repeating ignition. Also check that they are

fed correctly and that the combustion air inlet/smoke outlet are regular.

• If ignition fails repeatedly, immediately suspend use of the product and contact a qualied technician to check its operation.

Compliance with these indications is absolutely sucient to guarantee proper operation and to avoid any type of problems with the

product.

If the above-mentioned precautions are not taken, and during ignition the brazier is overloaded with pellets thus generating anomalous

smoke in the combustion chamber, carefully follow the indications below:

• Do not disconnect electrical power to the product for any reason whatsoever: this would stop the smoke extractor, releasing smoke

into the environment.

• Take the precaution of opening the windows to ventilate the installation room from any smoke in the environment (the chimney

might not work properly).

• Do not open the re door: this would compromise regular operation of the smoke extraction system to the chimney.

• Just switch the stove o by acting on the on-o button on the control panel (not the rear power supply socket button!) and move

away until smoke has completely evacuated.

• Before attempting re-ignition, clean the brazier and its air passage holes completely of all deposits and unburned pellets. Put

the brazier back in place, removing any residue from its support base. If ignition fails repeatedly, immediately suspend use of the

product and contact a qualied technician to check its operation and the chimney.

17-CLEANING

Only by properly servicing and cleaning the product is it possible to ensure its safety and correct operation.

CAUTION!

All the cleaning operations of all parts must be performed with the product completely cold and the plug

disconnected.

Disconnect the product from the 230V power supply before performing any maintenance operation.

The product requires little maintenance if used with certied good quality pellets.

DAILY OR WEEKLY CLEANING PERFORMED BY THE USER

Brazier cleaning

Before ignition, always clean the “T” brazier and remove any ash or incrustation from it that might obstruct the air ow holes, paying

attention to hot ash. In the case of ignition failure, or if fuel in the tank runs out, unburned pellets may accumulate in the brazier. Always

empty the residue in the brazier before each start-up. You may only use a vacuum cleaner to remove ash when it is completely

cold. In this case, use a suitable vacuum cleaner to remove small sized particles.

EXAMPLE OF A CLEAN BRAZIER EXAMPLE OF A DIRTY BRAZIER

17-CLEANING

REMEMBER THAT ONLY A CORRECTLY POSITIONED AND CLEAN BRAZIER CAN GUARANTEE SAFE IGNITION AND OPTIMAL

OPERATION OF YOUR PELLET PRODUCT. IN CASE OF FAILED IGNITION AND AFTER ANY OTHER LOCK STATE OF THE

PRODUCT, IT IS ESSENTIAL TO EMPTY THE BRAZIER BEFORE EVERY RESTART.

For the brazier to be cleaned properly, remove it from its housing completely and thoroughly clean all the holes and the grate on the

bottom. If good quality pellets are used, you will normally only need to use a brush to restore the optimal operating conditions of the

component.

Cleaning the ash collection compartment

To clean the ash collection compartment, you must raise grille “g” by rotating until it rests against the rebox. Clean out any residual

ash before lowering the grille “g”. The quality of the pellets used and user experience will determine the required cleaning frequency.

However, it is recommended not to exceed 2 or 3 days.

CLEANING THE GLASS

It is recommended to clean the ceramic glass with a dry brush, or if it is very dirty, spray a little specic detergent and clean with a cloth.

ATTENTION!

Do not use abrasive products and do not spray the glass cleaning product on the painted parts and on the door

gaskets (ceramic bre cord).

17-CLEANING

CLEANING THE AIR FILTER

A wire mesh air lter is found at the back of the stove, whose purpose is to prevent dirt entering the motor body and the internal sensor.

It is recommended to check that the lter is clean every 15/20 days. If needed remove u or the material that has deposited on it.

Inspection and cleaning are required more frequently if there are pets in the house.

Simply remove the lter to clean. To clean it use a brush or a damp cloth or compressed air. Set it back in place by simply pressing it

(interlocks).

The lter is made of metallic mesh and is soft and exible to the touch therefore, when cleaning, be careful not to

crush or damage it. In the event of breakage it must be replaced.

ATTENTION!

Never let the stove work without the air lter tted. MCZ cannot be held liable for any damage caused to the internal

components if this requirement is not complied with.

17-CLEANING

PERIODIC CLEANING PERFORMED BY A QUALIFIED TECHNICIAN

CLEANING THE HEAT EXCHANGER AND THE LOWER COMPARTMENT

Half-way through the winter season, but especially at the end, the compartment through which the exhaust smoke passes will need

to be cleaned.

This cleaning process is mandatory in order to facilitate the general removal of all combustion residue, before it becomes very dicult to

remove it due to the humidity compacting it over time.

CAUTION:

Cleaning is mandatory to be performed at the end of the season by an authorised and skilled technician so that even

the seals can be replaced.

CLEANING THE LOWER COMPARTMENT

To clean the lower ash compartment, open the doors of the stove and remove bottom panel “A”, as per instructions in the dedicated

chapter. Use the cold handle to open door “Z” by rotating the designated closure. Then move door “Z” down to the structure of the stove.

Now loosen the four screws “y”, remove plate “n” and gasket “o”. Use the nozzle of a vacuum cleaner to remove any ash and soot that may

have built up in the lower exchanger (smoke extractor) indicated by the arrow.

Before restoring cap “n” we recommend changing the gasket “o”.

17-CLEANING

CLEANING THE EXCHANGER

CLEANING THE UPPER COMPARTMENT

Clean the upper exchanger when the stove is cold and without the cladding in question. After removing the cap for lower cleaning “n”

(see previous paragraph), use a sti rod or a bottle brush to scrape the rebox walls (see arrow) so that the ash falls into the lower

compartment.

Then remove the upper Calorite plate “H”; to do this, open the rebox door and lift the Calorite plate “H” by tilting it right or left so that it

comes out of its supports and remove it.

17-CLEANING

Use a sti rod or a bottle brush to scrape the rebox walls (see arrow - at the right and left of the rebox respectively) so that the ash falls

into the lower compartment.

Use a vacuum cleaner nozzle to vacuum up any remaining ash and dust on the exchanger (see arrow).

17-CLEANING

Also vacuum under the top to remove any accumulated dust.

Then thoroughly clean the lower exchanger, replace any gaskets if needed, and reassemble.

17-CLEANING

CLEANING THE SMOKE DUCT AND GENERAL CHECKS

Clean the smoke extractor duct, especially around the “T” joints, bends and any horizontal sections.

For information on cleaning the ue, contact a chimney sweep.

Check the seal of the ceramic bre gaskets on the door of the stove. If necessary, order new replacement seals from the retailer or contact

an authorized service centre to carry out this task.

CAUTION:

The frequency with which the smoke outlet system is cleaned depends on the use of the boiler and the type of

installation.

We recommend relying on an authorised service centre for end-of-season cleaning and maintenance, as they will

carry out all of the previously mentioned work and inspect the stove components.

PERIODICAL CHECK OF THE DOOR CLOSURE

Make sure the door closure ensures a correct sealing action (with the “paper sheet” test) and that when the door is closed, the closing block

(X in the gure) does not protrude from the sheet metal to which it is secured. For some products it will be necessary to disassemble the

cladding to be able to assess the anomalous protrusion of the block when the door is closed.

17-CLEANING

END-OF-SEASON SHUTDOWN

At the end of each season, before switching the product o, it is recommended to remove all the pellets from the hopper with a vacuum

cleaner with a long pipe.

We recommend removing the unused pellet from the tank because it can retain humidity. Disconnect any combustion air ducting that

can lead humidity inside the combustion chamber but, above all, ask the specialised technician to refresh the paint inside the combustion

chamber with the special silicone spray paints (available at any store or CAT) during the necessary annual end of season scheduled

maintenance operations. In this way the paint will protect the inner parts of the combustion chamber, blocking any type of oxidative

process.

When not in use the appliance must be disconnected from the mains power supply. It is recommended to remove the

power cable for additional safety, especially in the presence of children.

The service fuse may have to be replaced if the control panel display does not switch on when the product is switched on again by pressing

the main switch on its side.

There is a fusebox on the side of the product, near the power socket. Open the fusebox cover with a screwdriver and replace the fuses if

necessary (3.15 A delayed) - seek assistance from an authorised and qualied technician.

CHECKING THE INTERNAL COMPONENTS

ATTENTION!

The internal electromechanical components must only be checked by qualied personnel whose technical expertise

includes combustion and electricity.

We recommend that an annual maintenance service is carried out with a scheduled service contract. This service is essentially a visual and

functional inspection of the following components: The following is a summary of the checks and/or maintenance that are indispensable

for the correct operation of the product.

PARTS/INTERVAL 1 DAY 23 DAYS 15/20 DAYS 1 YEAR

Brazier



Ash pan



Glass



Upper exchanger



Lower exchanger



Smoke duct



Gaskets



Air lter



Remote control battery



Door closure operation



18-FAULTS/CAUSES/SOLUTIONS

ATTENTION!

All repairs must only be carried out by a specialised technician, with the product switched o and the plug

disconnected.

ANOMALY POSSIBLE CAUSES SOLUTIONS

The pellets are not fed into the

combustion chamber.

The pellet hopper is empty. Fill the hopper with pellets.

Sawdust has blocked the feed screw. Empty the hopper and remove the sawdust

from the feed screw by hand.

Faulty gear motor. Replace the gear motor.

Faulty circuit board. Replace the circuit board.

The re goes out or the boiler stops

automatically.

The pellet hopper is empty. Fill the hopper with pellets.

The pellets are not fed. See the previous anomaly.

The pellet temperature safety probe has

been triggered.

Let the product cool down, restore

the thermostat until the lockout is o

and switch the appliance back on. If

the problem persists contact Technical

Assistance.

Chrono active. Check if the chrono setting is active.

The door is not closed properly or the

gaskets are worn.

Close the door and replace the gaskets

with original ones.

Unsuitable pellets. Change the type of pellets with those

recommended by the manufacturer.

Low pellet supply. Check the ow of fuel following the

instructions in the manual.

The combustion chamber is dirty. Clean the combustion chamber, following

the instructions in the manual.

Clogged outlet. Clean the smoke duct.

Faulty smoke extraction motor. Check the motor and replace it, if

necessary.

18-FAULTS/CAUSES/SOLUTIONS

ANOMALY POSSIBLE CAUSES SOLUTIONS

The product works for a few minutes

and then switches o.

Start-up phase is not completed. Repeat start-up.

Temporary power cut. Switch it back on.

Clogged smoke duct. Clean the smoke duct.

Faulty or malfunctioning temperature

probes.

Check and replace the probes.

Pellets accumulate in the brazier, the

glass of the door gets dirty and the

ame is weak.

Insucient combustion air. Make sure that the air inlet in the room is

tted and clear.

Clean the brazier and check that all the

holes are clear.

Perform a general cleaning of the

combustion chamber and the smoke duct.

Check the condition of the door gaskets.

Damp or unsuitable pellets. Change the type of pellets.

Faulty smoke evacuation motor. Check the motor and replace it, if

necessary.

The smoke evacuation motor does

not work.

No electrical supply to the stove. Check the mains voltage and the

protection fuse.

The motor is faulty. Check the motor and capacitor and replace

them, if necessary.

Defective circuit board. Replace the circuit board.

The control panel is broken. Replace the control panel.

The convection air fan never stops. Thermal probe defective or faulty. Check the probe and replace it, if necessary.

Fan faulty. Wait a few minutes and check motor

operation, replace it if necessary.

The product has not reached the shutdown

temperature yet.

Wait.

18-FAULTS/CAUSES/SOLUTIONS

ANOMALY POSSIBLE CAUSES SOLUTIONS

The air fan does not switch on. The product has not reached the

temperature.

Wait.

The remote control does not work. The remote control battery is at. Replace the battery.

Remote control faulty. Replace the remote control.

The product always runs at maximum

power when in automatic mode.

The room thermostat is in the maximum

position.

Reset the temperature of the remote

control.

Malfunctioning temperature probe. Check the probe and replace it if necessary.

Faulty or malfunctioning control panel. Check the panel and replace if necessary.

The product does not switch on. No power supply. Check that the plug is inserted and the

main switch is in the “I/ON” position.

Fuse tripped due to a fault. Replace the fuse with one of the same

characteristics (5x20 mm T 3.15A).

Check the brazier. Clean the brazier and remove any deposits

or residues of non-burned pellets.

Check the position of the brazier. Put the brazier back in its place.

Check that the ignition plug warms up. Check and if necessary, replace.

Clogged smoke outlet or smoke duct. Clean the smoke exhaust and/or the

smoke duct.

Faulty ignition plug. Replace the ignition plug.

GND

SIGNAL

GND

SIGNAL

GND

SIGNAL

12V

ROSSO

BLU

ALTA TENSIONEBASSA TENSIONE

GND

12V

19-CIRCUIT BOARD

COMFORT AIR STOVE WITH 2 FANS WIRING KEY

1. SMOKE FAN ENCODER

2. GEAR MOTOR ENCODER

3. PRESSURE TRANSDUCER

4. SMOKE TEMPERATURE PROBE

5. SOFTWARE UPDATE (USB)

6. MODBUS COMMUNICATION FOR MODEM, WI-FI, ETC.

7. EMERGENCY PANEL

8. HOPPER OVERLOAD CUT-OUT

9. AIR FAN 1

10. GEAR MOTOR

11. SMOKE FAN

12. SPARK PLUG

13. SWITCH

14. AIR FAN 2

15. PRESSURE SWITCH

PLEASE NOTE The electrical wiring of individual components is tted with pre-wired connectors of dierent sizes.

LIVE ELECTRICAL CABLES

DISCONNECT THE POWER SUPPLY CABLE 230V BEFORE CARRYING OUT

ANY OPERATIONS ON THE ELECTRICAL BOARDS

LOW VOLTAGE

HIGH VOLTAGE

08/09/16REV.18901615900

MCZ GROUP S.p.A.

Via La Croce n°8

33074 Vigonovo di Fontanafredda (PN) – ITALY

Telephone: +39 0434/599599 r.a.

Fax: +39 0434/599598

Internet: www.mcz.it

e-mail: mcz@mcz.it

MCZ Curve COMFORT AIR Handleiding

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