Piazzetta P965 Thermo Instructions For The User

Pellet Stove P965 THERMO

INSTRUCTIONS FOR THE USER

The instruction booklet is an integral part of the product.

Dear Customer, Thank you for having chosen one of our products, which is the result of years of experience and continuous research aimed at making a superior product in terms of safety, reliability and performance. This booklet contains information and advice for safe and efficient use of your product.

Gruppo Piazzetta S.p.A

INTRODUCTION

Observance of the instructions and technical information in this instruction booklet guarantees the safety of persons and property; it also ensures more efficient operation and an increased lifespan. Gruppo Piazzetta S.p.A. cannot be held responsible for damage or injury due to failure to comply with the instructions for use and maintenance given in this booklet. The product you have purchased may differ slightly from the one illustrated in this booklet since the pictures are only given as an indication and not an exact portrayal.

This instruction booklet has been prepared by the manufacturer and is an integral part of the product. In the event of sale or relocation of the product make sure this booklet accompanies it, since the information contained in it is intended for the purchaser and for anyone involved in the installation, use and maintenance of the product.

Read the instructions and the technical information contained in this booklet carefully before proceeding with use or any repairs.

See the guarantee certificate enclosed with the product for the terms, limitations and exclusions. In line with its policy of constant product improvement and renewal, the manufacturer may make changes without notice.

This document is the property of Gruppo Piazzetta S.p.A.; no part of it may be disclosed to third parties without the written permission of Gruppo Piazzetta S.p.A. All rights reserved by Gruppo Piazzetta S.p.A.

Gruppo Piazzetta S.p.A. designs and manufactures its products in compliance with the ISO 9001:2000 Quality System. The products are also made in accordance with European EN, UNI and EN safety laws. Piazzetta products are EC and DIN approved.

Any alterations or repair work that is not authorised in writing invalidates the type-approval certificate. In this case the product could be a danger for persons and property; the manufacturer is relieved from all liability and may claim damages to its image.

The following symbols are used in some parts of the booklet:

CAUTION: for actions that require particular caution and suitable preparation. FORBIDDEN: for actions that UNDER NO CIRCUMSTANCES must be carried out.

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CONTENTS

GENERAL RULES 4 DT2010493-01 General recommendations 4 DT2010491-01 Electrical connection 4 DT2010495-00 Basic safety rules 5 DT2010492-00 Safety distances 5 DT2010494-01

FEATURES AND TECHNICAL DATA 6 DT2010805-00 Features 6 DT2010806-00 Technical data 6 DT2010807-00 Dimensions 7 DT2031191-00 Description of the appliance 8 DT2010808-00 Control panel 9 DT2010814-00

USE 10 DT2010518-00 Programming the timer thermostat 10 DT2010499-00 Programming the clock 11 DT2010500-00 Using the stove in the manual mode 11 DT2010501-00 Using the stove with the timer thermostat 12 DT2010502-00 Setting - display 14 DT2010503-00 Setting the water temperature 15 DT2010504-00 Ignition 16 DT2010505-00 Shutdown 17 DT2010506-00 Disposal of ashes 17 DT2010049-02

MAINTENANCE 18 DT2010813-00 Routine maintenance 18 DT2010508-00 Cleaning the grate and grate support 18 DT2010809-00 Cleaning the ash tray 18 DT2010810-00 Cleaning the glass 18 DT2010062-04 Cleaning the flue system 19 DT2010092-03 Cleaning the smoke chamber 19 DT2010811-00 Cleaning the baffle plate 20 DT2010812-00 Cleaning the cladding 20 DT2010059-03 Scheduled maintenance 21 DT2010733-00

FUEL 22 DT2010233-01 Loading the pellets 22 DT2010730-00

TROUBLESHOOTING 23 DT2010516-01

Heading Page Code txt

This booklet code H07021170 / DT2000289 – Rev. 00 (10/2007) comprises 28 pages.

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GENERAL RULES

GENERAL RECOMMENDATIONS

Use only regulation wood pellets (refer to section entitled “Fuel”).

Ensure that there is sufficient ventilation in the room of installation when the stove is lit.

In the event of technical faults, the appliance commences the automatic shutdown procedure. Restart the stove only after having eliminated the cause of the fault.

Stop using the product in the event of fault or malfunctioning.

Any build-up of unused pellets in the burner left over from repeated failed ignitions must be removed before attempting to light the stove again.

Stove operation can result in surfaces, handles, flue pipe and glass becoming extremely hot. When the stove is in operation, only touch these parts if wearing protective clothing otherwise use suitable tools. In other words, be extremely careful and take due precautions, especially in the presence of children and elderly or disabled persons.

Any noise such as tapping or creaking does not denote a defect but is due to normal expansion of the materials as they heat up.

Because of the build-up of heat on the glass, take care that those who are unfamiliar with stove operation do not linger near the stove.

Tell children of the possible dangers when the stove is in operation and the precautions they must take.

Keep all elements made of combustible or flammable material such as: wooden beams, wood furniture, curtains, flammable liquids, etc. outside the hearth area of radiation and in any case at least 1 m from the heating block.

The smoke outlet pipe, chimney stack, flueway and fresh air intake must always be clear of obstructions, clean and periodically checked (at least twice) during the seasonal period when in use. When the appliance has not been used for some time, it is advisable to check the above. For other information, consult a chimney sweep.

The working pressure of the water system must be

1.5 bar to ensure trouble-free operation. If the pressure is lower then it must be raised.

If replenishing with pellets while the stove is lit, ensure that the bag does not come into contact with any hot surfaces.

In the event of faults or malfunction of the product or for controls of the whole installation, use the services of a heating technician or qualified person.

For operation together with other heating or ventilating appliances, refer to the paragraph “Installation environment” in the installer’s booklet.

The temperature of the room or rooms to which the THERMO appliance is connected must never fall below 5°C.

ELECTRICAL CONNECTION

Prior to connecting the appliance to the mains electricity supply, ensure that the system is fitted with a suitable earth circuit and a residual current circuit breaker in conformity with standards 73/23 EEC, 93/98 EEC.

Make sure that the plug connecting the stove to the mains electricity supply is also accessible after installation of the appliance and that it cannot be heated by radiation or by contact with hot parts.

The mains electricity supply to which the appliance is connected must guarantee the necessary input; in any case the mains cables must have a diameter of at least 1.5 mm2 and carry 230 V at 50Hz (Consult a qualified electrician).

It has been noted that voltage changes in the mains electricity supply exceeding 10% of the nominal value may affect appliance operation, causing malfunction or faults to the electrical system of the stove.

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GENERAL RULES

BASIC SAFETY RULES

Under no circumstances use fuels other than pellets.

Do not use the appliance as an incinerator or use liquid fuels to operate the stove or to revive any embers.

Do not place objects that are flammable or not heat resistant on the stove or within the recommended minimum safety radius. Do not leave pellet residues on top of the stove.

Do not open the stove door during operation or light the stove if the glass of the door is broken.

Do not use the stove or fireplace simultaneously with shared ventilation systems, whether with or without extractor fans. Similarly do not use other devices or equipment such as airconditioning systems or other heating systems which use fans to circulate the air. Do not obstruct the fresh air intake.

Do not use the stove as a cooking appliance. Do not light the appliance unless the water cir-

cuit is completely filled with water.

Under no circumstances remove the protective grille inside the pellet hopper.

During operation do not close the valves on any the radiators; check for closed valves or gate valves that would close off the water circuit.

Do not carry out any procedure that prevents a normal flow of the hot water produced by the boiler.

UNDER NO CIRCUMSTANCES LIGHT THE APPLIANCE UNLESS THE WATER CIRCUIT IS COMPLETELY FILLED WITH WATER.

Do not let the appliance operate at a higher temperature than the room temperature requirements.

Under no circumstances shutdown the appliance rapidly; the cooling time takes between thirty and fifty minutes and is controlled automatically by the appliance. To shutdown the appliance, follow the instructions given under “SHUTDOWN”.

SAFETY DISTANCES

In the case of flooring that is heat-sensitive or flammable, check that non-combustible insulating material has been laid in the safety area, e.g. steel sheet, marble slab, tile, etc. of a suitable size to comply with the safety distances: D, E.

Keep any flammable product, such as wood furniture, curtains, carpets, flammable liquids, etc. far from the stove when it is in operation (minimum 80 cm).

Check that the product has been installed in compliance with the minimum safety distances described here:

A 20 cm from the wall to the rear B 20 cm from the walls to the side C 80 cm in the heat radiation area and hot air fan outlet D 50 cm floor protection E

30 cm (measured from the inner corner of the hearth opening)

F Stove - Appliance

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FEATURES AND TECHNICAL DATA

FEATURES

• Cladding: in enamelled steel and hand-made majolica

• Interior: in grey enamelled steel

• Hearth: in Aluker

• Boiler: in grey enamelled steel

• Grate: in steel

• Door: in cast-iron with ceramic glass heat resistant up to 750°C

• Handle: in steel

• Control panel: display with digital controls

• Timer thermostat: with programming mode divided into two daily time bands

• Power setting: 5 settings

• Ash drawer: can be removed

• Fuel: natural wood pellets (refer to the section “FUEL”)

• Heating: heat exchange by water, with boiler water temperature setting or room temperature setting

TECHNICAL DATA

These technical data have been measured in the laboratory in conformity with European standards, using fuel having the following characteristics:

• Pure beech pellets

• Length approx. 10-30 mm

• Diameter approx. 6-6.5 mm

• Apparent density 650 kg/m

• Specific weight approx. > 1.0 kg/dm

• Net heat value approx. 5 kWh/kg

• Moisture content approx. < 8 %

• Ash residue approx. < 0.5 %

U.M. P965 Thermo Rated heat output (max/min)

Heat output of fluid (water) Hourly consumption (max/min) Thermal efficiency Draught in the case of connection to flueway Hopper capacity approx. Boiler capacity Power supply Frequency Max. input Input (max/min) under normal working conditions Working pressure Maximum working pressure (peak) Heating circuit water temperature control (max/min) Flue diameter Fresh air intake (recommended minimum section) Weight of stove with cladding Weight of stove with cladding and packaging Size of packaging (WxDxH)

N.B.: the above data may vary according to the characteristics of the pellets being used.

kW 16.5 / 6 kW 14 / 5

kg/h 4 / 1.5

% > 80

Pa 10 - 15

kg / (I) 38 / (59)

I40

V 230

Hz 50

W 340

W 120/90 bar 1.5 bar 3

°C 80 / 50

cm 8

100 kg 230 kg 245

cm 75x82x163

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FEATURES AND TECHNICAL DATA

DIMENSIONS P965 THERMO (cm)

KEY: S = Temperature/pressure relief valve 3/4” R = System return 3/4” M = System delivery 3/4”

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ACCESSORIES AND EQUIPMENT

FEATURES AND TECHNICAL DATA

DESCRIPTION OF THE APPLIANCE

The pellet stove P965 THERMO, with enamelled steel cladding and majolica front panels offers an excellent heat output. This thermal efficiency has enabled the manufacturer to think of this product as a boiler for the heating circuit water. The pellet stove P965 THERMO operates automatically, modulating the flame according to the required heating needs. The working range in relation to the hot water boiler is between 50°C and 80°C.

DESCRIPTION

1 Bottom ash drawer 6 Baffle plate 2 Grate ash tray 7 Baffle plate support 3 Grate 8 Top grille 4 Lower front panel 9 Control panel with digital controls 5 Back 10 Smoke chamber closing plate

Room sensor NTC 10K Cable L=200 Schuko IEC * Grey silicone paint spray can Hexagon wrench 5 mm Boiler tube-cleaning brush Pipes and elbows for connection to the flueway Floor protection

* The grey silicone paint spray should only be used to paint the grate and the metal parts inside the hearth when they are clean and before the season when the appliance is not used.

Provided Provided Provided Provided Provided

Optional Optional

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FEATURES AND TECHNICAL DATA

CONTROL PANEL

Indicator light table (when on)

Timer thermostat activated

Temperature reached by water. High smoke temperature. Temperature reached by room thermostat.

Not set Programming in progress Auger in operation Spark plug lit Activated alarm Water circulation pump in operation

52° C

ON 3

52°C S

SET button

Used to select the functions:

- water temperature setting

- parameter change confirmation

- access to timer thermostat programming.

ON-OFF button

Used to:

- ignite and shutdown

- exit from programming.

Power level

Water temperature / Smoke temperature / Time

Setting the temperature

The and buttons are used to increase and decrease the values for the following settings:

- water temperature (values between 50°C and 80°C)

- date and time, in the functions that require such values

Setting the power

The and buttons are used to increase and decrease the values for the following settings:

- flame size (values from 1 to 5)

- minutes, in the functions that require such value.

On/Off status

Auger

Timer thermostat

Not set

Temperature

indicator:

- Water

- Smoke

- Room thermostat.

Alarm Water circulation pump

Power setting

(values from 1 to 5)

Spark plug

Programming

Water temperature; Water set point temperature; Actual time; Room temperature; Programming codes; Alarm warnings

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USE

PROGRAMMING THE TIMER THERMOSTAT

Codes appear in the upper part of the display during timer thermostat programming, which indicate the function being programmed. To help the User recognise the various codes, the functions are listed below with a description of the type of setting that must be programmed.

For safety reasons connected with unfinished or accidental programming, when in the programming mode if no button is pressed for one minute the control software makes the starting display page reappear. The settings saved at the last time of pressing the SET button remain confirmed.

Clock programming, setting the day of the week.

01U

Just press the ON/OFF button at any time to exit from programming. The settings saved at the last time of pressing the SET button remain confirmed.

Code

Function Setting

Clock setting Display

Weekday, displayed writing: Mon, Tue, Wed,…Sun Hour and minutes

Values displayable during operation

Manual or timer thermostat use

Enable or disable use of the timer thermostat

Switching on time Switching off time

1st cycle of operation

Weekdays: Displayed writing: Mon, Tue, Wed,…Sun In which the 1st cycle of operation will be activated - ON or deactivated - oFF

Required water temperature

Switching on time Switching off time

2nd cycle of operation

Weekdays: Displayed writing: Mon, Tue, Wed,…Sun In which the 2nd cycle of operation will be activated - ON or deactivated - OFF

Required water temperature

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USE

PROGRAMMING THE CLOCK

The stove leaves the factory with the clock already set. All that needs to be done, therefore, is to check that the time is precise or if any change is needed because of summer time. Correct time setting is necessary to be able to use all the functions where time is involved. Setting the clock entails programming the following values: day, hour and minutes.

Days

The settings may be made with the appliance switched on or off.

Hours

Minutes

USING THE STOVE IN THE MANUAL MODE

To set, proceed as follows:

• To access programming, press the and buttons one after the other.

To set the day, press the or button. Confirm by pressing the button SET The programme automatically enters the hour and

minutes programming stage. The hour and the minutes are set separately

To set the hour, press buttons 1 , 2 To set the minutes, press buttons 6 , 5 Confirm and exit from programming by pressing the

SET button

MANUAL MODE OF OPERATION

Activate as follows:

• To enable settings, keep the SET button pressed for more than five seconds

• Press button 1 to activate or deactivate the timer thermostat

The following should appear on the display: crof =

deactivated

• Press the SET button to confirm and exit. The factory setting is crof = deactivated.

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USE

USING THE STOVE WITH THE TIMER THERMOSTAT

AUTOMATIC MODE OF OPERATION

Operation in the automatic mode is obtained by using the timer thermostat. The timer thermostat offers the possibility of programming two daily time cycles with two different water temperature settings per time band.

For example: 1st cycle: from 06.00 to 09.00 a.m. 2nd cycle: from 20.30 to 23.00 p.m.

The two time cycles may be activated or deactivated in the seven days of the week (e.g.: operation desired from 6.00 a.m. to 9.00 a.m. Monday and Tuesday, but not Wednesday, …and so on).

Day

Status

1st cycle: 18.00 - 22.00

2nd cycle: 14.00 - 18.00

on on on on on on on

off off off off off on on

Day

Status

Water temp.: 65°

Water temp.: 75°

MON TUE WED THUR FRI SAT SUN

1st CYCLE

Activate as follows:

• To enable the setting, keep the SET button pressed for more than five seconds

• Press button 1 to activate or deactivate the timer thermostat

The following should appear on the display: croN =

activated

• Press the SET button to confirm

The time cycle programming is automatically enabled

Setting the time band of the 1st cycle

• To set the switching on time press buttons 1 , 2

• Press the SET button to confirm

• To set the switching off time press buttons 1 , 2 Each time a button is pressed the figure changes by

10 minutes; for fast change, keep the relevant button pressed down

• Press the SET button to confirm

The operating days programming is automatically enabled.

Example:

Setting of 2 weekly cycles with different water temperature and different daily activation.

The factory setting is crof = deactivated.

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USE

Setting the day

Activate as follows:

• To set the day of the week press button 2

• To activate (...ON) or deactivate (...OF) the set day

operation status, press button 1 Proceed step by step from Monday to Sunday

• Press the SET button to confirm

The operating water temperature setting is automatically enabled.

Refer to the paragraph “Setting the water temperature” to set the temperature.

Setting the water temperature

To set:

• Press buttons 1 , 2

• Press the SET button to confirm

Programming of the 2nd cycle is automatically enabled.

Explanation of Day Setting

Programming of the day setting entails programming all the weekdays. The display automatically shows Monday (MON..., on the display) and must be completed through to Sunday (Sun.., on the display).

The day is set using buttons 1 , 2 Button 2 selects the day for which operation

is to be set Button 1 sets the on/off status:

... on activated ... of deactivated

Programming is done in a consecutive and sequential way, first pressing the day button 2 and then the operation status button 1 .

If you realise that you have made a mistake in the settings for a day:

• complete the programming and press the SET button, then re-enter or press the ON/OFF button to force an exit and reenter in programming at the point where the SET button was last pressed.

USE

SETTING - DISPLAY

2nd CYCLE

If you do not want to continue with programming the

2nd cycle

• Press the ON/OFF button to exit from programming.

Otherwise repeat the procedure of the 1st cycle starting from: Setting the time band of the 1st cycle

(see page 12).

Table of codes and functions.

Code Function Setting

2nd cycle of

operation

Switching on time Switching off time

Required water temperature

Weekdays: Displayed writing: Mon, Tue, Wed, …Sun in which the 2nd cycle of operation will be activated - ON or deactivated - oF

12u

13u

Boiler water temperature

Smoke temperature

Stove status ON OFF

Power level values from 1 to 5

With the stove on or off, it is possible to know

- the smoke temperature

• Keep button 2 pressed for a few seconds

- the water temperature

• Keep button 1 pressed for a few seconds

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Activate as follows:

• Keep button 5 pressed for more than five se-

conds until the writing 04

U appears

Select the function as follows:

• To go forward or back in the code sequence, press

button 2

• Press the SET button to confirm

USE

SETTING THE WATER TEMPERATURE

The display of certain data during operation may be set on the bottom row:

Room temperature “A” blinking Actual time Boiler water temperature “H” blinking Water temperature set point “S” blinking

Setting the water temperature (Water thermostat)

The “water thermostat” measures the temperature of the water in the heating system and provides information for modulating the heat output (Flame) of the stove in relation to the set temperature.

For best stove operation with radiators, it is advisable to set the minimum water temperature at 65°C. Setting the water temperature at over 65°C does not jeopardise good operation or safety of the stove nor does it cause greater fuel consumption.

To activate:

• Press the SET button

• Press button 1 or button 2 to decrease or

increase the temperature respectively. When the set temperature has been reached, the

“room thermostat” indicator light on the display co- mes on

When the thermostat is satisfied the stove passes to the holding function, modulating the flame size for a lower temperature than the set temperature.

11 12 13

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USE

IGNITION

Setting the room thermostat

If the “room thermostat” is installed, it measures the room temperature and provides information for modulating the heat output (Flame) of the stove in relation to the set temperature.

If a higher temperature than room temperature is set on the external thermostat, the stove operates at the set power (Example ON 3).

If a lower temperature than the room temperature is set on the external thermostat, the signal appears on the display alternating with the writing “t Off”, indicating that the stove is starting to modulate the flame and is passing to power 1 (ON 1), which is lower than the set power.

The external thermostat takes priority over the water thermostat.

Lighting for the first time

Before lighting, remember to check that:

The mains plug is properly inserted into the socket.

The grate is pushed to the rear against the baffle plate and that the grate baffle plate is placed over it.

The stove door is tightly shut.

The pellet hopper is full or contains sufficient pellets for the stove to operate for the required time.

The water circuit, when the stove is in normal operating conditions, is at correct working pressure (see installer’s instruction booklet).

The valves and gate valves of the stove, radiators and system in general are open.

To light:

• Keep the ON/OFF button pressed for a few seconds

A three-stage cycle starts that brings the stove to the normal operating mode in approx. 15/25 minutes.

Normal operation

During normal operation, it is possible to adjust:

- The power between 1 and 5;

- The water temperature between 50°C and 80°C.

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USE

SHUTDOWN

Temporary shutdown (daily)

To shutdown the stove

• Keep the ON/OFF button pressed for several

seconds When the stove is fully shutdown the actual time and

the writing “Off” appear on the display.

DISPOSAL OF ASHES

Ash from natural (non-treated) wood burned in stoves or open fireplaces is composed mainly of calcium, silicon, potassium and magnesium oxides. The ashes can therefore be used as a fertiliser for plants or in the garden, albeit not exceeding 2.6 kg per 10m2 annually.

Several ignition procedures are necessary the first time the pellet hopper is filled. The pellets must fill the whole chute down to the firebox.

Ignition after long periods of inactivity (seasonal)

Upon first ignition certain odours may be given off due to the evaporation of paint or grease. To alleviate the problem just air the room. Do not remain in the room when there are odours, as the fumes may be harmful to people or pets.

When lighting for the first time, for the first few days of operation do not use the stove at maximum power but at intermediate power (value 2-3).

Check that all the extraordinary maintenance procedures have been carried out, see the section “EXTRAORDINARY MAINTENANCE”.

Check that the connected electrical and water circuit accessories are in proper working order.

When lighting after long periods of inactivity, read the warnings and the procedure described under “Lighting

for the first time”

For the first few days of operation do not use the stove at maximum power, but at intermediate power (value 2-3).

The ashes should be placed in a metal container with a sealed cover. The sealed container should be placed on a non-combustible surface at a safe distance from combustible materials until the cinders have been completely extinguished.

Only when they have been fully extinguished can the ashes be thrown away with organic waste.

The automatic shutdown state requires a cooling time of approx. 30 ÷ 50 minutes.

Never shutdown the stove by disconnecting from the mains electricity supply, as this could cause problems with the appliance and affect subsequent ignition.

Shutdown for long periods (seasonal)

To shutdown for long periods, read the warnings and procedure described under “Temporary shutdown”.

• Disconnect the power supply cable by pulling out the plug from the mains socket.

Carry out the extraordinary maintenance described in the section “SCHEDULED MAINTENANCE”.

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MAINTENANCE

ROUTINE MAINTENANCE

Once a day and every time before lighting, clean the grate area as follows:

• draw out the grate (3) from its seat;

• remove the ash and any encrustation that may have formed, taking particular care to clear any clogged slits, which can be done using a sharp pointed tool;

• keep the “ignition hole” (4),located to the rear of the grate, clean;

• Check the grate support and remove any ash.

The frequency of cleaning depends on how much the stove is used and the quality of the fuel.

When replacing the grate and before lighting the appliance, check that the grate has been fitted correctly and pushed back towards the rear of the stove.

The glass should be cleaned when cold using ammonia-based degreasing agents and not corrosive substances such as solvents.

All maintenance work (cleaning, any replacements, etc.) must be carried when the flame is fully extinguished, the stove completely cold and the power cable and plug disconnected from the mains electricity supply .

Maintenance is to be considered compulsory for correct and efficient stove operation. If maintenance is not carried out with the recommended frequency, stove performance could suffer. The manufacturer cannot be held responsible for stove deterioration or malfunction if due to poor maintenance.

Do not use materials that could scratch or damage the glass, since scratches could become cracks. Under no circumstances use abrasive substances.

CLEANING THE GRATE AND GRATE SUPPORT (DAILY)

KEY: 1- Lower front panel 2- Grate ash tray 3- Grate 4- Ignition hole

CLEANING THE ASH TRAY (DAILY)

Open the lower front panel (1), pull out the grate ash tray (2) and empty it. Check the space where the tray is accommodated and remove any ash.

To dispose of the ashes, refer to the paragraph “di- sposal of ashes”. Refit the ash tray and close the lower front panel, making sure that the closing edge of the panel pushes the ash tray against the stove.

CLEANING THE GLASS (DAILY)

It is advisable to clean the glass every day before lighting the stove. If the appliance heats up very slowly during the ignition stage due to fuel with a higher degree of moisture content than the recommended value, tar will probably deposit on the glass, which will burn off upon reaching full operating conditions.

If the tar is left to build up over a long period it will require more effort to remove.

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MAINTENANCE

CLEANING THE FLUE SYSTEM (MONTHLY)

As a rough guide it is necessary to clean the smoke ducts once every 2 months.

Clean smoke ducts ensure better operation.

Until you have got reasonably used to the operating conditions of the stove, we recommend that this maintenance be carried out on a monthly basis. Remove the plug from the Tee and clean the pipes. If necessary, particularly on the first few occasions, we recommend calling in a qualified technician.

CLEANING THE SMOKE CHAMBER (ONCE EVERY TWO MONTHS)

• Open the pellet hopper lid, remove the screws fixing the top grille, push the grille towards the front of the stove and lift it.

• Remove the smoke chamber closing plate using the relative hexagon wrench provided with the stove to loosen the 6 fixing screws.

• Using the relative tube-cleaning brush provided with the stove, thoroughly clean the smoke ducts. Clean the top of the stove using a vacuum cleaner to remove deposited ash and carbon residues.

This type of cleaning requires a vacuum cleaner suitable for holding ash.

• Close the smoke chamber proceeding as above in the reverse order, then refit the top grille and fix it with the relative screws

• Proceed with cleaning the bottom ash drawer. Open the lower front panel using the relative hexagon wrench to remove the 2 screws fixing the drawer. Pull out the ash drawer and empty it. Replace the bottom ash drawer, fix it with the relative screws and close the lower front panel.

• The frequency of cleaning depends on how much the stove is used and the quality of the fuel.

To dispose of the ashes, refer to the paragraph “disposal of ashes”.

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MAINTENANCE

CLEANING THE BAFFLE PLA TE (ONCE EVERY TWO MONTHS)

Once a day and every time before lighting, clean the grate area as follows:

• draw out the grate (3) from its seat;

• remove the ash and any encrustation that may have formed, taking particular care to clear any clogged slits, which can be done using a sharp pointed tool;

• keep the “ignition hole” (4),located to the rear of the grate, clean;

• Check the grate support and remove any ash.

The frequency of cleaning depends on how much the stove is used and the quality of the fuel.

When replacing the grate and before lighting the appliance, check that the grate has been fitted correctly and pushed back towards the rear of the stove.

CLEANING THE CLADDING

KEY: 5 - Rear panel 6 - Baffle plate 7- Baffle plate support

Never soak the ceramic cladding or clean it with cold water when it is still hot as the thermal shock could cause it to crack.

Ceramic cladding

The ceramic cladding must first be cleaned with a soft dry cloth before using any detergent (even mild detergent). Products are available on the market which are suitable for cleaning ceramics as well as concentrated products for cleaning porcelain. These will remove oil, ink, coffee and wine stains, etc.

Never clean metal parts using alcohol, solvents, petroleum-based products, acetones or other degreasing or abrasive substances. In the event of such substances being used the manufacturer cannot be held responsible for any damage caused.

Enamelled metal parts

When cleaning the enamelled metal parts of the product use a soft cloth moistened with water.

Discolouration of metal parts may be the result of misuse.

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MAINTENANCE

SCHEDULED MAINTENANCE

The following maintenance must be carried out after a long period of inactivity of the appliance and prior to ignition at the beginning of the cold season. It is necessary to ensure efficiency and safe operation of the stove.

Cleaning the stove

• Remove all the pellets from the hopper and the auger and remove any dust on the bottom using a vacuum cleaner.

• Thoroughly clean the grate, the grate support, the firebox and the ash tray.

• Remove dust, cobwebs, etc. from the area behind the inner lining panels once a year and in particular from the fan units.

• Check the glass door gaskets for wear and for tightness.

UNDER NO CIRCUMSTANCES TAMPER WITH OR REMOVE THESE ACCESSORIES.

Pursuant to current regulations on the safety of electrical equipment and of the systems in general, you must contact a Piazzetta After-Sales Service Centre or a qualified electrician for all and any work connected with installation, maintenance or servicing that involves access to electrical parts.

Maintenance of the water system

• Check the level of water in the system and if necessary also bleed the system.

• Check that the circulation pump impeller is in proper working order. If it is jammed, unscrew the plug on the circulation pump and release the impeller using a screwdriver.

•

Check the water system seals and all the wear elements for leaks and for wear and if necessary replace them.

• Clean the moving parts and mechanisms (motors and circulation pump).

• Check the electrical part and the electronic components.

• Use the pressure gauge provided with the stove to check the working pressure of the water in the heating circuit (see technical data).

• Check the joints and connecting pipes for leaks.

• Check the state of the temperature/pressure relief valve and the safety valve. If they have activated to release hot water, it must be checked that they are in proper working order and if they are not, they must be replaced.

DT2010733-00

DT2010512-00

FUEL

The wood pellet is obtained by pressing wood sawdust left over from the processing and transformation of natural dried wood. The typical small, cylindrical form is obtained by a process similar to wiredrawing. Thanks to lignin, a natural element which is released during the pressing of the raw material, the pellets acquire a good consistency and compactness without requiring treatment with additives or caking agents. There are various types of pellet on the market with qualities and characteristics that vary depending on the processes they have undergone and the type of wood used in their production. The autonomy , ef ficiency and correct operation of the appliance depend on the characteristics and quality of the pellets.

No other fuel than pellets must be used.

LOADING THE PELLETS

Do not let sawdust build up on the bottom of the hopper.

To load the pellets into the hopper it is advisable to tear off the edge of the sack and empty the sack directly into the hopper. This makes filling easier and avoids pellets being deposited on top of the stove.

Choosing unsuitable pellets causes:

- obstruction of the grate and flue gas pipes;

- increase in fuel consumption;

- reduction in efficiency;

- possible extinguishing of the flame and shutdown of the appliance;

- dirt to build up on the glass;

- particles which have failed to burn and heavy ash to be produced;

- the possibility of stove malfunction.

The presence of moisture in the pellets increases their volume and causes them to split which in turn causes:

- malfunction of the fuel-loading system;

- inefficient combustion.

Pellets should be stored in a sheltered, dry place.

To use good-quality pellets with other dimensions and heat-producing properties than those recommended above, you will need to alter the operating parameters of the stove.

This “customisation” of stove settings must be carried out at a Gruppo Piazzetta S.p.A. Service Centre or by specially qualified personnel authorised by Gruppo Piazzetta S.p.A.

Do not leave leftover pellets on top of the stove – they could catch fire!

Under no circumstances remove the protective grid from inside the hopper.

In the case of refilling with pellets when the appliance is lit, avoid letting the pellet sack coming into contact with a hot surface.

Using pellets that are out of date or not in conformity with the manufacturer’s recommendations not only damages the stove and jeopardises performance, but can render the guarantee null and void and relieves the manufacturer from all liability.

For best appliance operation, the following is recommended:

- do not use pellets with characteristics other than those described by the manufacturer;

- do not use pellets of inferior quality or containing dispersed sawdust, resins or chemical substances, additives or caking agents;

- do not use wet or damp pellets.

Pellet characteristics

Natural pure wood pelletsComponents: 10-30 mmLength approx.: 6- 6.5mmDiameter approx. 5 kWh/kgNet heat value approx.: < 8 %Moisture content approx.: < 0.5%Residual ash approx.:

DT2010233-01

DT2010730-00

DT2030460-00DT2030459-00

TROUBLESHOOTING

Some of the problems indicated below may be resolved by following the instructions. Call the Gruppo Piazzetta Service Centre only after having carefully read the instructions.

All work must be carried out when the appliance is cold and disconnected from the electricity supply (pull out the plug). Authorised qualified persons must be contacted, in accordance with current regulations, whenever it is necessary to work on parts inside the cladding or the firebox in order to resolve the problem. Unauthorised tampering with the appliance or the use of other than original spare parts invalidates the warranty and relieves the manufacturer from all liability. Problems caused by incompetent or insufficient maintenance or by failure to comply with the instructions in the installation and operating booklet for the product relieve the manufacturer from all and any liability.

Problem Cause Remedy

ACCNO

Failed ignition

Problems with the smoke sensor

CONNNO

Power failure

PUL

The pellet hopper is empty

The pellets do not catch fire. The smoke outlet temperatu-

re does not increase.

Shutdown the stove. Keep the button pressed for a few seconds; check the causes that have made the safety switch activate. Always remove all the fuel from the grate. Start up the stove. Start another three-stage cycle that should bring the stove to normal operating conditions within approx. 15/25 minutes. If the appliance does not light regularly, the cause could be mainly due to insufficient maintenance (see the section “Maintenance”) or poor pellet quality (see the section “Fuel”). After the second consecutive failed ignition, check for other problems.

Fill the hopper.

The three-way valve is locked in the open position

Contact your nearest Service Centre.

Obstructed pellet-charging system.

Empty the hopper, check and clean the auger and chute.

Grate not clean.

Clean the grate (see paragraph “Cleaning the grate”).

Failure to reach operating temperature.

Empty the grate and re-light. For any other cause or other work, contact your nearest Service Centre. Problems with the smoke

sensor electronic board.

Contact your nearest Service Centre.

Power failure.

The appliance automatically restarts, carrying out

cleaning of the grate, with the writing “PUL” shown

on the display;

Upon restarting, it will continue to operate at power

level 2 ”ON 2”.

DT2010516-01

TROUBLESHOOTING

Problem Cause Remedy

FUMION 1

Smoke temperature

sensor

1st SAFETY WARNING

Overheated stove. Room too warm.

This is a safety warning indicating that the maximum smoke temperature limit has been exceeded. It activates putting the stove to minimum power “ON 1”; if the temperature continues to exceed the maximum limit, a second safety device “MASS TEMP” activates.

TEMP

MASS

Appliance smoke

safety cutout

2nd SAFETY WARNING

Flue system obstructed. Faulty electronic board. Faulty smoke temperature control sensor

Clean the flue system. Contact your nearest Service Centre.

FIRESTOP

Water temperature sensor

SAFETY WARNING

Overheated stove. Incorrect setting of the water temperature set point parameters. Room too warm.

This is a safety warning indicating that the maximum water temperature SET POINT limit has been exceeded. Example: if the water temperature set point has been set at 60°C and the heat that is produced is not properly dispersed, upon a sharp increase of 15°C in temperature, the safety device STOP FIRE activates. Check that heat dissipation is normal and check the set limit, as described under the heading “setting the operating water temperature”.

During this stage the appliance automatically starts the shutdown and cooling process. The temperature/pressure relief valve could activate. Wait and make sure that the remaining pellets in the grate have finished burning. Wait for the appliance to cool and the water temperature to drop. The thermostats could have tripped; check and reset. In accordance with the standard EN 60335-1, it is compulsory to contact a Gruppo Piazzetta Service Centre or authorised technicians after two resets.

TROUBLESHOOTING

Problem Cause Remedy

H2O

MASS

Water temperature sensor

SAFETY WARNING

The water temperature has exceeded the maximum safety limit set at 90°C. Water circuit problem.

Contact your nearest Service Centre. Check the water system (e.g. closed gate valves, incorrect water connections, closed thermostats, air in the system, partial or total lack of water, etc.). This is a safety warning indicating that the maximum water temperature limit has been exceeded.

The control panel display

is not lit

Faulty electronic board. Faulty water temperature control sensor.

Contact your nearest Service Centre.

The appliance is not powered.

Check that the plug is properly inserted into the mains electricity socket.

Faulty power cable. Replace the power cable.

Blown fuses. Faulty control panel. Faulty flat cable. Loose wiring. Faulty electronic board.

Contact your nearest Service Centre.

The appliance operates

for 9-10 minutes and then

goes out.

The room sensor is not connected.

Connect the room sensor to the stove.

40° C

ON 3

On the display

Repeat the ignition procedure and if the problem persists, call an authorised technician.

Check the connection. Clean the flue system.

See “NO ACC”.

Empty the pellet hopper; check and clean the auger and chute.

Contact your nearest Service Centre.

The smoke sensor is jammed. The flue gases/smoke have not reached the required igni-

tion temperature. The smoke sensor could be badly connected.

Blocked flue. Failed ignition.

Faulty electronic board. Obstructed pellet-charging system.

TROUBLESHOOTING

Problem Cause Remedy

Incorrect system pressure

Leaks in the water circuit. System malfunction. Damaged safety valves. Leaps in pressure of the mains water supply. Failed operation of the expansion tank.

Contact your nearest Service Centre or a qualified technician.

ecoON 1

Water temperature sensor

Set water temperature has been reached. Room too hot.

If the temperature of the water flowing into the heating system exceeds the set value, the stove power modulating system automatically activates, indicated by the intermittent display of the writing “ECO”, and puts the stove to power 1 “ON 1”.

Obstructed grate or

smoke chamber

discharge system.

wood

alar

Empty pellet hopper Obstructed pellet-charging

system

Add pellets. Empty the pellet hopper. Check and clean the auger

and chute

depr

al1

Obstructed grate or smoke chamber discharge system

Check and clean. Contact your nearest Service Centre.

Broken smoke extractor. Very long flue system.

Check correct installation of the appliance (section “Installation”).

Worn or damaged door

sealing gaskets. Clogged hose connection. Broken or obstructed silicone

tube. Faulty pressure switch. Loose wiring. Faulty electronic board.

Contact your nearest Service Centre.

Hopper thermal cutout

hot

temp

al2

Obstructed flue system. Check and clean the flue system. Grate not clean.

Clean the grate.

Faulty thermostat. Faulty electronic board. The circulation pump does not work.

Contact your nearest Service Centre.

Temporary power failure during operation.

Manually reset the pressure switches; (see “Hot TEMP”).

Water circuit malfunction.

Check the water system. The appliance does not manage to disperse excess heat. Check that the gate valves of the heating system water circuit are open.

TROUBLESHOOTING

Problem Cause Remedy

Check and clean the smoke discharge system.

Obstructed discharge system.

Temporary power failure during operation.

Press the button to stop the acoustic alarm if activated. Wait and make sure that the remaining pellets in the grate have finished burning. Wait for the appliance to cool. Reset the thermostats as follows:

- Unscrew the two caps located on the rear of the appliance.

- One at a time press the two buttons, if necessary with the help of a pointed screwdriver.

- Screw on the two previously removed caps. Check and remove the causes that have made the safety device activate. Clean the grate. Start up the stove. The writings and the indicator light “AL” should go out, otherwise it is necessary to repeat the manual reset procedure. The thermostats could have tripped; check and reset. In accordance with the standard EN 60335-1, it is compulsory to contact a Gruppo Piazzetta Service Centre or authorised technicians after two resets..

Raise the room temperature using another heating source. In the coldest periods of the year it is advisable to leave the heating system operating at minimum level to avoid freezing of the appliance.

Water sensor

h2o

al7

Water circuit thermal

cutout

Thermostats

hot h20

al3

Temperature of water inside the boiler below 5°C

Water sensor malfunction

Contact your nearest Service Centre.

Air in the water circuit. Bleed the circuit correctly.

Thermostats

Water circuit malfunction.

Check the water circuit. The appliance does not manage to disperse excess heat. Check that the gate valves of the heating system water circuit are open.

Clean the grate.

Grate not clean.

Contact your nearest Service Centre.

Faulty thermostat. Faulty electronic board. The circulation pump does not work.

Via Montello, 22

31011 Casella d’Asolo (TV) - ITALY

Tel. +39.04235271 - Fax +39.042355178

http://www.piazzetta.it

e-mail: infopiazzetta@ piazzetta.it

Gruppo Piazzetta S.p.A. Technical Department - Cod. H07021170 / DT2000289 rev. 00 - (10-2007)

Piazzetta P965 Thermo Instructions For The User

Specifications and Main Features

Frequently Asked Questions

User Manual