Piazzetta P937 Installation, Use And Maintenance Manual

Brand: Piazzetta

Model: P937

Category: Pellet stove

Type: Installation, Use And Maintenance Manual

INSTALLATION, USE

AND MAINTENANCE MANUAL

The instruction manual is an integral part of the product.

Pellet Stove

P937

English

Dear Customer,

We thank you for having chosen one of our products, the fruit of extensive and continuous research for a superior product in terms of safety, reliability

and performance.

In this manual you will nd all the information and advice you need to use your product as safely and efciently as possible.

ESSENTIAL INSTRUCTIONS

•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 addressed to the purchaser and to anyone involved

in the installation, use and maintenance of the product.

•Read the instructions and the technical information contained in

this manual carefully, before proceeding with installation, use or any

repairs.

•Compliance with the instructions in this booklet guarantees the safety

of persons and of property; it also ensures more efcient operation

and an increased lifespan.

•Gruppo Piazzetta S.p.A. declines all responsibility for damage caused

by failure to observe the installation, use and maintenance instructions

in this manual, for unauthorized product modications or for use of

non-original spare parts.

•Gruppo Piazzetta S.p.A. will not be responsible for defects and damage

resulting from modications or tampering of the product including

changing the value of one or more parameters that determine

operation. Any changes, including changing the original parameters,

may only be carried out by authorised persons from the company and

with the values set by the manufacturer

•The installation and use of the product must be made in accordance

with the manufacturer's instructions and in compliance with European,

national and local regulations.

•The installation, electrical connection, operational check, maintenance

and repairs are operations that must be performed by qualied and

licensed technicians that have appropriate knowledge of the product.

•The wall against which the product is to be placed must not be of

wood or any other ammable material. For correct installation it is

also important to follow the indications given in the section entitled

“MINIMUM SAFETY DISTANCES”.

•Read all the instruction manuals relating to: the cladding, the

ventilation kit and any other accessories.

•Check that the oor where the product is to be installed is completely

level

•When handling the steel parts of the cladding it is advisable to use

clean cotton gloves to avoid leaving ngerprints which are difcult to

remove at rst time of cleaning.

•The stove must be assembled by at least two people.

•Connect the pellet stove to the electricity network only after having

correctly connected it to the ue.

•The plug must always be accessible after the stove has been installed.

For the restrictions, limitations and exclusions please refer to the warranty included with the product.

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

•When operating the pellet stove only use wood pellets which conform

to standards (see the chapter entitled “FUEL”).

•Do not use liquid fuel to operate the pellet stove or to stoke the embers.

•Make sure there is adequate ventilation during operation in the room

where the product is installed.

•The fuel supply is interrupted if the product shows any signs of

malfunctioning. Only restart the product after having eliminated the

cause of the malfunction.

•Stop using the product in the event of a fault or malfunction.

•Do not remove the protection grille which is located on the pellet tank.

•The accumulation of pellets in the brazier following several failed light

up attempts (no lit) must be removed before lighting.

•Pellet stove operation may cause the surface, the handles, the ue

and the glass to become extremely hot. Only touch these parts during

operation if wearing the correct protective clothing or with suitable

means.

•Since the glass becomes hot, make sure that no person other than

those experienced in operating the stove remain in the installation

area.

•This appliance is not for use by persons (including children) with

reduced physical, sensory, mental capacity or with a lack of experience

and knowledge, unless they have been instructed on how to use the

appliance by the person who is responsible for its safety

•During the operation and/or cooling phase, slight creaking noises may

be heard. This is not considered a defect, but is a consequence of the

thermal expansion of the materials used.

•The images shown in this manual are for explanatory purposes and at

times may not accurately depict the product.

a If there are any problems or difculties in understanding the

manual, contact the local dealer.

a If the ue should catch re or in the case of other dangerous

situations, stop using the appliance, do not open the door,

switch the appliance off, take all necessary safety actions and

contact the emergency services.

d It is forbidden to place objects which are not heat-resistant on

the stove or within the prescribed minimum safety distance.

d Do not open the door during operation, or operate the stove if

the glass is broken.

H072043UK0 / DT2001455 - 00

English

DT2010208-11

DT2010001-01

1.0 GENERAL INDICATIONS 4

1.1 Single chimney or flueway 5

1.2 Soot inspection 5

1.3 Chimney 6

1.4 Fresh air intake 7

1.5 Installation environment 7

1.6 Load-bearing capacity of the floor 8

1.7 Heating capacity 8

1.8 Smoke outlet pipe 8

1.9 Connection to the traditional type flue 10

1.10 Fresh air intake 11

1.11 Prevention of domestic fires 11

1.12 Minimum safety distances 12

2.0 TECHNICAL DATA AND SPECIFICATIONS 13

2.1 Characteristics 13

2.2 Product identification data 13

2.3 Technical data 14

2.4 Accessories supplied 14

2.5 Dimensions P937 15

3.0 FUEL 16

4.0 PREPARATION FOR INSTALLING 17

5.0 INSTALLATION 18

5.1 Multifuoco system 18

5.2 Electrical connections and control devices 22

5.3 Installation of the external thermostat 23

5.4 Smoke outlet 23

6.0 USE 24

6.1 Loading the pellets 24

6.2 Pellet LCD remote control 25

6.3 First start-up 26

6.4 Start-up and normal functioning 27

6.5 Possible problems and solutions 31

6.6 Control panel 35

6.7 Setting the Language 36

6.8 Programming 37

6.9 Setting the clock 38

6.10 Thermostat 39

6.11 Fan mode 45

6.12 Multicomfort 45

6.13 Energy Saving 46

6.14 Parameter menu 48

6.15 Enable Beep (audio signal) 50

6.16 Modifying the transmission unit 50

6.17 State stove 51

6.18 Multifuoco System Operation 51

6.19 Safety devices 52

6.20 Opening the door 56

6.21 Stove humidifier 56

6.22 Disposal of ash 56

7.0 MAINTENANCE 57

7.1 Cleaning the brazier and brazier support 57

7.2 Cleaning the ash tray 57

7.3 Cleaning the combustion chamber 58

7.4 Cleaning the smoke chamber 58

7.5 Cleaning the flue system 59

7.6 Cleaning the ceramic cladding 59

7.7 Cleaning the steel parts 59

7.8 Cleaning the glass (daily) 59

7.9 Replacing the glass 60

7.10 Replacing the remote control battery 60

7.11 Cleaning the fans 61

7.12 When not in use: 61

7.13 Scheduled maintenance 62

8.0 MAIN ANOMALIES 63

8.1 Replacing the fuses 65

European Standards 66

Reference Standards 66

CONTENTS

Chapter Heading Page

This booklet code H072043UK0 / DT2001455 - 00 (05/2013) comprises 68 pages.

H072043UK0 / DT2001455 - 00 3

English

DT2010187-00

Check that the installation of your product conforms to all the indications given below.

SOOT INSPECTION APERTURE

CHIMNEY STACK

CHIMNEY

CONNECTION

TO FLUE

MINIMUM SAFETY

DISTANCES

CAPACITY LOAD

OF THE FLOOR

FRESH AIR INTAKE

FLUEWAY

ELECTRIC

POWER SUPPLY

Fig. 1

1.0 GENERAL INDICATIONS

H072043UK0 / DT2001455 - 00

English

DT2010216-05

DT2030321-01

MAX 45°

MIN 3.5 M

Every appliance must have a vertical pipe, called ue, operating by

natural draught to discharge the combustion gases outside.

The ue must:

- comply with regulations in force in the country where the appliance

is to be installed;

- be tight to the products of combustion, waterproof, suitably insulated,

made with materials resistant to the corrosion of the gases and to

stress;

- be connected to just one stove, replace or extraction hood (Fig. 2);

- be properly sized,with constant free internal section, equal to or

greater than the diameter of the ue pipe of the stove and at least 3.5

m in length (Fig. 2);

- be mainly in a vertical position with deection from the axis of no

more than 45° (Fig. 2);

- be at a suitable distance from combustible or ammable materials,

ensured by an air gap or suitable insulating material;

- be of uniform internal section, preferably round: square or rectangular

sections must have rounded corners with a radius of at least 20 mm;

with a maximum ratio between the sides of 1.5 (Fig. 3-4-5);

- the walls must be as smooth as possible and with no narrowing;

bends must be regular and continuous (Fig. 6).

d It is forbidden to make xed or mobile apertures on the ue

pipe to connect appliances other than the one to which it is

already connected.

d It is forbidden to pass other air ducts or service pipes inside

the ue pipe, however large it is.

a If the ue is the incorrect size or installed other than in

compliance with the above instructions, Gruppo Piazzetta

S.p.A. cannot be held liable for malfunctioning of the product,

damage to property or injury to persons or animals.

It is recommended that the ue has a chamber for collecting solid matter and any condensate below the connection and which may be easily opened

and inspected by means of an air tight door. (Fig. 1)

Deposit of creosote

R (min.20)

Deposit of creosote

R (min.20)

L(<1,5xP)

DT2010024-02

1.1 SINGLE ChImNEy OR fLUEwAy

DT2010031-01

1.2 SOOT INSpECTION

Fig. 2

Fig. 3

Fig. 5

Fig. 4

Fig. 6

H072043UK0 / DT2001455 - 00 5

English

DT2030049-00

DT2030050-00

DT2030189-00

DT2030188-00

DT2030190-00

The chimney is the part which is positioned on the top of the ue to ease the

dispersion of combustion products into the atmosphere.

The chimney must comply with the following requirements:

- it must have an internal section and shape the same as the ue (A);

- it must have a useful outlet section (B) of not less than twice that of the ue (A);

- the chimney stack (the part of the chimney which emerges from the roof) and

is in contact with the outside (e.g.in the case of a at roof), must be covered

with brick or tile elements and in any case it must be well insulated;

- it must be built in such a way as to prevent the penetration of rain, snow and

foreign matter into the chimney and to ensure that in the event of winds from

all directions and angle, discharge of the combustion products is assured

(chimney with anti downdraught cowl).

Recommended distances for correct chimney operation.

To ensure trouble-free operation of the chimney and allow correct dilution of the

products of combustion into the atmosphere, the chimney must be installed at

the distances given below:

- 6-8 metres from any building or other obstacles that are higher than the

chimney;

- 50 centimetres higher than any obstacles located at a distance less than 5

metres;

- outside the reux area. The size and shape of this area differ according to

the angle of inclination of the roof and it is therefore necessary to adopt the

minimum heights shown below.

Example: Check the inclination of the roof (column

α), and the anticipated

distance of the chimney from the axis of the ridge (column

A), if the distance

is greater than “A” the height of the chimney may be read in (column

H). If the

distance is less than “A” the chimney must rise above the ridge by 0.5 metres.

DT2010025-03

1.3 ChImNEy

* B it is twice

of to A

6-8 m

FLAT ROOF

5 m or less 5 m or lessover 5 m

0.50 m

SLOPING ROOF

height of reflux

area Z

distance more than A

H min

distance

0.50 m above the ridge

ridge axis

at least A

REFLUX

AREA

Fig. 7

Fig. 9

Fig. 10

Fig. 11

Fig. 8

Roof inclination Horizontal width of the reux

area from ridge axis

Minimum height of outlet from

roof Height of reux area

αA H Z

15° 1.85 m 1.00 m 0.50 m

30° 1.50 m 1.30 m 0.80 m

45° 1.30 m 2.00 m 1.50 m

60° 1.20 m 2.60 m 2.10 m

H072043UK0 / DT2001455 - 00

English

DT2030051-00

DT2030052-00

DT2030053-00

DT2030192-00

DT2030191-00

In order to operate correctly the stove/replace must have the necessary

air available provided through a fresh air intake.

The air intake must:

- have a total free cross section of at least the size indicated in the

section “TECHNICAL DATA”;

- be protected by an external grille provided it does not reduce the

recommended minimum section;

- be positioned in such a way that it is not obstructed.

The air necessary for the re may be obtained in different ways:

- through a fresh air intake direct to the room where the appliance is

installed;

- with ducting through pipes direct to the room where the appliance is

installed, increasing the recommended minimum free cross section

by at least 15%;

- from an adjacent room to that where the appliance is installed

provided the air ows freely from the outside through permanent

apertures communicating with the outside.

a The adjacent room from which the air is to be taken must

not have a low pressure compared to the exterior due to a

counter draught caused by the presence in the room where

the appliance is installed of another appliance or extractor

device.

The adjacent room must have permanent apertures which

comply with the requirements provided above.

d Combustion air must not be taken from adjacent rooms which

are used as a garage, store room for combustible material or

for activities with a risk of re.

The appliance should be installed in a location which allows safe and convenient use as well as easy maintenance. If the product being installed

requires an electrical socket, the room must also be provided with an earthed power supply in accordance with current regulations.

The room where the appliance is to be installed or adjoining rooms must comply with the following requirements:

a They must not be used as a garage, store for combustible material or for activities with a risk of re.

a They must not have a low pressure compared to the exterior due to a counter draught caused by the presence in the room where the

appliance is installed of another appliance or extractor device.

a Do not use two stoves, a replace and a stove, a stove and a wood-re cooking range etc... in the same environment since the draught

of one could affect the draught of the other.

•Devices suitable for cooking food with relative hoods without an extractor fan may only be used in kitchens.

•Type C gas appliances are allowed (refer to current legislation and regulations in the country where the appliance is to be installed).

DT2010539-03

1.4 fRESh AIR INTAkE

DT2010033-01

1.5 INSTALLATION ENvIRONmENT

Fig. 12 Fig. 13

Fig. 14

Fig. 15

H072043UK0 / DT2001455 - 00 7

English

DT2030054-00 DT2030193-00

DT2030194-00

DT2030195-00

d Type B gas appliances are not allowed (refer to current legislation and regulations in the country where the appliance is to be installed).

d The stove or replace must not be used simultaneously with collective type ventilation ducts with or without extractor fan, other devices

or other appliances such as: forced ventilation systems or other heating systems using ventilation to change the air. These systems could

cause a low pressure in the room where the appliance is installed even if installed in adjoining or communicating rooms.

d The stove or replace must not be used: in stairwells except in buildings with no more than two apartments; in corridors for common

use; in bedrooms; in bathrooms or shower-rooms.

Check the load-bearing capacity of the oor referring to the weight of the product as described in the section “TECHNICAL DATA”.

If the oor does not have a suitable load-bearing capacity, take adequate counter-measures.

Check the heating capacity of the appliance by comparing the rated power given in the section “TECHNICAL DATA” with the power required by the

environment to be heated.

The energy requirement may be calculated approximately by multiplying the square metres of area by the height of the ceiling, the result is then

multiplied by a coefcient, which depends on the degree of insulation of the building, that is, on internal and external factors of the dwelling:

-Internal factors: type of window and door frames, thickness of the insulation and walls, type of building materials, presence of stairwells, walls

with extensive glazing, high ceilings, position of the rooms to be heated in relation to other adjacent heated or unheated rooms,...

-External factors: geographical position, average outdoor temperature, exposure, wind speed, latitude, altitude,...

Example of approximate calculation of the energy requirement to heat a xed volume to 18/20° C:

The coefcient that is normally used is determined according to the real conditions as they occur case by case.

•

From 0.04 to 0.05 kW per cubic metre in a well insulated environment.

•

From 0.05 to 0.06 kW per cubic metre in a poorly insulated environment.

3 rooms measuring 20 m2 X (H ceiling) 2.7 m = 162 m3 (volume)

In an environment with a good degree of insulation, an average value (coefcient) of 0.045 kW may be taken

162 (volume) X 0,045 (kW) = 7,3 kW necessary (6300 kcal/h)

Conversion 1 kW = 860 kcal/h

a Consult a heating technician or engineer for a correct check and calculation of the requirement of the environments to be heated (see

“REFERENCE STANDARDS”).

a Rated power being equal, products with Multifuoco system can evenly distribute heat throughout the rooms to be heated.

DT2010032-00

1.6 LOAD-bEARING CApACITy Of ThE fLOOR

DT2010130-01

1.7 hEATING CApACITy

a The pellet stove is not like other stoves. The smoke draught is forced through a fan that maintains the pressure in the combustion

chamber and maintains a slight pressure around the ueway; therefore it is important to ensure that the ueway is completely

watertight and properly installed, both from the point of view of operation and of safety.

•The construction of the ueway must be carried out be specialised people and companies following the indications given in the manual.

•Always construct the ue system in such a way that periodic cleaning can be carried out without having to dismantle any parts.

•The pipes must always be sealed with silicone (no cementing agents) or adequate seals which maintain resistance specications for elasticity

at high temperatures (250°C) and are fastened with a self-threading screw Ø 3,9 mm.

DT2010229-05

1.8 SmOkE OUTLET pIpE

H072043UK0 / DT2001455 - 00

English

Pipes and maximum lengths which may be used

The following pipes may be used; painted aluminium-coated steel

(minimum thickness 1.5 mm), stainless steel (Aisi 316) or enamelled

steel (minimum thickness 0.5mm) with rated diameter 80 mm or 100

mm (for pipes inside the ue max. 150 mm).

The connecting male-female collars must have a minimum length of

50 mm.

The diameter of the pipe depends on the type of system; the stove has

been designed to take 80 mm diameter pipes but, as can be seen in

table 1, in some case it is recommended that a double-walled 100 mm

diameter pipe is used.

TABLE 1 –PIPE LENGTH

TYPE OF SYSTEM

WITH

80 mm

DIAMETER

PIPE

WITH DOUBLE-

WALLED 100 mm

PIPE

Max. length

(with 3 bends of 90°) 4.5 m 8 m

For installation above 1200 m

above sea level - Compulsory

Maximum number of bends 3 4

Length of horizontal section

with minimum incline 3% 2 m 2 m

a The loss of pressure in a bend of 90° can be compared to that

of 1 meter of pipe; an inspectable T union can be considered

equivalent to a bend of 90°.

EXAMPLE: If the length to be installed is greater than 4.5 m with 80

mm diameter pipes, calculate the maximum length to be covered in the

following way:

•If the section to be covered uses at most 3 bends of 90°, the maximum

length of the section will be 4.5 m.

•If the section to be covered uses at most 2 bends of 90° and taking

into account that a bend of 90° can be replaced by 1 m of pipe, the

maximum length of the section will be 4.5 m+1 m=5.5 m.

•If the section to be covered uses at most 1 bend of 90° and taking

into account that a bend of 90° can be replaced by 1 m of pipe, the

maximum length of the section will be 4.5 m+1 m+1 m=6.5 m.

If it is necessary to use 100 mm diameter pipes, connect the stove

outlet with a 80 mm diameter T union and then a 80 mm 100 mm

adaptor (not supplied by Gruppo Piazzetta S.p.A.) (Fig. 16).

T union

The use of this tting must allow for the collection of condensate mixed

with soot which is deposited inside the pipe and allows for the periodic

cleaning of the ue without dismantling the pipes.

This tting can be purchased from the Gruppo Piazzetta S.p.A. dealer

together with the pipes.

Below is an example of a connection that allows thorough cleaning

without the need to dismantle the pipes of the system (Fig. 17).

Ø100mm

Ø80mm

STRAIGHT REDUCER

Ø80>Ø100

TEE WITH SEALING PLUG

DIRECTION

OF CLEANING

DIRECTION OF CLEANING

DIRECTION

OF CLEANING

TEE

INSULATING

MATERIAL

Max. 2m

(min. 3%)

Fig. 16

Fig. 17

a Fasten the ue to the wall with the appropriate brackets in such a way that the ue does not weight on the extraction fans.

d It is forbidden to install dampers or valves which may obstruct the passage of the outlet smoke.

d It is forbidden to install in a ue in which smoke or gases from other appliances is discharged (boilers, hoods, etc.).

H072043UK0 / DT2001455 - 00 9

English

DT2030337-00

DT2030338-01

If you want to use an existing ue it is recommended that it is checked

by a professional chimney sweep to ensure that it is watertight. This is

because the smoke, as it is under slight pressure, may inltrate cracks

in the chimney and invade living spaces. If following inspection it is clear

that the ue is not perfectly intact, it is recommended that it is lined

with new material. If the existing ue is large, we recommend inserting

a pipe with a maximum diameter of 150 mm, it is also advisable to

insulate the smoke outlet pipe (Fig. 18-19).

For connection to the ue, it is recommended that pipes and bends

produced by the Gruppo Piazzetta SpA are used, as these are compatible

with the smoke outlet.

Other pipes may also be applied after having checked the compatibility

of the coupling or adapted it, bearing in mind that the pipes and bends

must be made to current standards and regulations. In this case,

however, Gruppo Piazzetta S.p.A. only guarantees proper operation

for its own manufactured products that are used in compliance with

instructions.

•If the tting has to pass through partitions or walls of inammable or

heat-sensitive materials, or load bearing walls, an insulating barrier

equal to or greater than 10 cm must be created around the tting

using mineral-based insulating material (rock wool, ceramic bre)

with a nominal density of at least 80 kg/m

•If the tting passes through partitions or walls of inammable or

heat-sensitive materials an insulating barrier equal to or greater

than 5 cm must be created around the tting using mineral-based

insulating material (rock wool, ceramic bre) with a nominal density

of at least 80 kg/m

•Check that the connection to the ue is tight to the smoke with the

operating conditions of the appliance slightly pressurized.

•Check that the pipe does not go too far into the chimney, creating a

bottleneck at the ue.

a Make sure that everything is installed in a correct,

workmanlike manner.

DT2010230-03

1.9 CONNECTION TO ThE TRADITIONAL TypE fLUE

CHIMNEY STACK

TEE

Ø 80 mm

INSULATING MATERIAL

Ø 150 mm MAX

PIPE INSERTION

INSPECTION

WINDOWS

WITH DAMAGED FLUE

CLOSING FLANGE

SEALING FLANGE IN

STAINLESS STEEL

OR ALUMINIUM

FRESH AIR INTAKE WITH

NON-CLOSABLE GRILLE

Fig. 18

Fig. 19

H072043UK0 / DT2001455 - 00

English

DT2030339-01

DT2030340-00

Only a ue which meets the following requirements can be used:

- only insulated (double wall) stainless steel pipes xed to the building

are to be used (Fig. 20);

- at the base of the pipe there should be an inspection point for periodic

inspections and maintenance;

- it must have a wind proof cowl and respect the distance from the

ridge of the building as described in the section “CHIMNEY”.

a Make sure that everything is installed in a correct,

workmanlike manner.

DT2010232-02

1.10 fRESh AIR INTAkE

FRESH AIR INTAKE WITH

NON-CLOSABLE GRILLE

Fig. 20

The installation and use of the product must be made in accordance with the manufacturer's instructions and in compliance with European, national

and local regulations.

a When a smoke outlet pipe passes through a wall or ceiling, specic installation methods need to be applied (protection, insulation,

distance from heat sensitive materials, etc...). Refer to the section “CONNECTION TO THE FLUE”.

•It is recommended that all elements made of combustible or inammable material such as beams, wooden furniture, curtaining, ammable liquids

etc. be kept outside the heat radiation range of the stove and at a distance of at least 80 cm from the heating block.

•For other information, see the section “MINIMUM SAFETY DISTANCES” and “CONNECTION TO THE FLUE”.

•The ue pipe, chimney stack, chimney and fresh air intake must always be free if obstructions, clean and checked periodically i.e. at least twice

during the seasonal period from the lighting of the stove and during its use When the stove has not been used for some time it is advisable to carry

out the checks mentioned above. For further information, consult a chimney sweep.

•Only use recommended fuels (See chapter “FUEL”).

DT2010027-02

1.11 pREvENTION Of DOmESTIC fIRES

H072043UK0 / DT2001455 - 00 11

English

DT2030341-00

Install the product respecting the safety distances from heat sensitive

or ammable materials.

In case of heat sensitive or ammable ooring, it is necessary to install

ame-resistant protection: e.g. steel sheets, marble, tiles, etc.

The minimum distances from the stove are:

The ue pipe must respect the minimum distances from building

materials that are heat sensitive or ammable (cladding, beams or

wooden ceilings, etc.) as shown in the gure to the side.

a The smoke ue must be suitable for connection to a pellet

stove in compliance with the relative national laws in force.

a Keep any ammable products such as: wood furniture,

carpets, curtains, ammable liquids, etc.. well away from the

stove during operation (minimum 80 cm).

a We recommend keeping greater distances around the stove

than those displayed in order to facilitate any work on the

appliance and avoid overheating.

DT2011553-02

1.12 mINImUm SAfETy DISTANCES

Radiant area of the

fireside opening

Rear wall

Side wall

STOVE

Floor protection

Fig. 21

MIN. 25 cm*

MIN. 5 cm*

MIN. 40 cm

Fig. 22 Fig. 23

A Stove distance from rear wall

B Stove distance from side walls

C Area clear of ammable objects

D Floor protection front overhang

EDistance between inside edge of reside opening and the

edge of the oor protection

Distance from the outlet to the rear non-inammable wall;

for walls;see the technical documentation supplied with the

smoke ue for ammable or heat sensitive walls.

G Distance between stove and smoke outlet

The minimum safety distances are shown in the table “TECHNICAL

DATA”.

* = Values refer to the use of original smoke ues provided by

Gruppo Piazzetta; if using other pipes for the smoke ue, see the

documentation supplied with the pipes

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DT2033681-01

DT2030335-00 DT2032226-00

Covering: ..........................hand-made tiles

Interiors: ...........................painted steel rebox

Deector and reside: .......cast iron

Brazier: ............................. cast iron

Door: ................................cast iron with ceramic glass resistant up to 750°C with door cover in painted steel

Handle: .............................in steel with nickel plated nish

Controls: ...........................remote control with LCD display with digital controls

Thermostat: ......................series feature with daily, weekly and weekend programming mode over two time slots

Power settings: ................. from 1 to 5

Ash tray: ...........................extractable

Fuel: .................................pellet made of pure natural wood (see chapter “FUEL”)

Heating: ............................ forced ventilation with Multifuoco System with a double fan and the option for separate modulation, four fan settings, the

possibility to operate with the remote control timer thermostat (see section “MULTICOMFORT”), b with two bottom-up

front hot air deectors, prearrangement for two rear outlets (see section “MULTIFUOCO SYSTEM”)

Humidier: ........................ stainless steel, capacity 23 cl of water

DT2010990-00

2.1 ChARACTERISTICS

2.0 TEChNICAL DATA AND SpECIfICATIONS

Each product is supplied with a data plate showing the model and the performance of the appliance as well as a plate with the serial number. The

data plate is located on the side of the pellet tank on the side of the electronic board (see gure).

The plate with the serial number and a sticker with some important information are applied below the pellet tank cover and can be read when the

tank is open.

Another plate with the serial number is also applied on the last page of this manual.

Always provide this information when requesting service and/or spare parts from the Gruppo Piazzetta After-Sales Service Centre.

DT2012687-00

2.2 pRODUCT IDENTIfICATION DATA

CAUTION

SERIAL

NUMBER PRODUCT

TECHNICAL DATA

Fig. 24 Fig. 25

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DT2012051-01

2.3 TEChNICAL DATA

Data taken from laboratory tests using pellets with a thermal capacity of 5 kWh/kg.

Note: The above data may vary in relation to pellet size and type used (see "FUEL" chapter).

Unit of

Measurement

P937

at rated power at minimum power

Thermal power kW 10.4 3.5

Hourly consumption kg/h 2.4 0.8

Thermal yield % 89.1 89.2

CO content at 13% of O2% / (mg/Nm3) 0.020 / (189.9) 0.030 / (431.5)

Ash dust mg/Nm311.4

Test report N° -

VKF N° -

Maximum power draw W 430

Work power draw W 150

Supply voltage V 230

Frequency Hz 50

Approx. tank capacity kg / (l) 30 / (48)

Smoke outlet diameter cm Ø 8

External air intakes (minimum required area) cm2100

Stove and cover weight kg 191

Technical data for ue calculations

Unit of

Measurement

P937

at rated power at minimum power

Thermal power kW 10.4 3.5

Flue ow rate g/s 7.0 4.8

Average ue temperature at outlet °C 186.7 105.7

Minimum draught Pa 12

Minimum safety distances (see paragraph “MINIMUM SAFETY DISTANCES”) cm

AStove distance from the rear non-combustible wall 1

Stove distance from the rear ammable wall 20

B Stove distance from side walls 20

C Area clear of ammable objects 80

D Distance of front oor protection overhang 50

E Distance between inside edge of reside opening and the edge of the oor protection 30

F Distance between the smoke outlet and non-ammable walls. 5

G Distance between stove and smoke outlet 10

Description

Ambient probe NTC 10K Supplied

Schuko cable L=200 IEC Supplied

LCD remote control device Supplied

Air diverter adjustment handle Supplied

Brazier deector Supplied

Humidier tank Supplied

Silicon paint spray can Supplied

Left/right smoke outlet set Optional

Upper right smoke outlet set Optional

Combustion air tting set Optional

Flue connection pipes and bends Optional

Floor protection Optional

GPRS module for stove remote control Optional

DT2012008-01

2.4 ACCESSORIES SUppLIED

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2.5 DImENSIONS p937

24 18

120

Ø 8

47 41

Ø 8

105

12 12

H072043UK0 / DT2001455 - 00 15

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Sizes in cm

The wood pellet is a fuel which is obtained by pressing wood sawdust

left over from the working of natural dried wood. The typical small,

cylindrical form is obtained by passing the material through a die. 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.

Since the characteristics and quality of the pellet considerably

affect stove performance, efciency and proper operation, we

recommend that you use high-quality pellets.

Gruppo Piazzetta S.p.A. has tested and programmed its stoves and

can ensure best performance and trouble-free operation using

pellets with the following specic characteristics:

Pellet specications

Parts Natural pure wood pellet

Length, approx. 10 - 30 mm

Diameter, approx 6- 6.5 mm

Apparent density, approx. 650 kg/m3

Specic weight, approx. >1.0 kg/dm3

Net heat value, approx. 5 kWh/kg

Moisture content, approx. < 8 %

Residual ash, approx. < 0.5 %

Note: : the above data refer to beech/r wood pellets

To ensure trouble-free operation:

DO NOT use pellets with dimensions other than those recommended by

the manufacturer

DO NOT use pellets containing sawdust, bark, maize, resins or chemical

substances, additives or adhesives.

DO NOT use damp pellets.

Choosing other unsuitable pellets may;

- obstruct the brazier and ue gas pipe;

- increase fuel consumption;

- reduce efciency;

- mean that proper stove operation cannot be guaranteed;

- cause dirt to build up on the glass;

- leave particles which have failed to burn and heavy cinders.

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;

- inefcient combustion.

Pellets should be stored in a sheltered, dry place.

When using good quality pellets but with dimensions and heat-producing

properties other than those recommended above, it is necessary to

change the stove operating parameters.

a This "customisation" of stove settings must only be carried

out at a Gruppo Piazzetta S.p.A. service centre or by specially

qualied personnel authorised by Gruppo Piazzetta S.p.A.

a Using pellets that are out of date or not in conformity with

the manufacturer's recommendations not only damages the

stove and jeopardises its performance, but can render the

guarantee null and void and relieves the manufacturer of all

liability.

3.0 fUEL

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DT2010233-04

To prevent accidents or damage to the product we recommend the following:

- unpacking and installation must be carried out by at least two people;

- the product must always be moved and handled with suitable equipment in full compliance with current safety regulations;

- the packaged product must be kept in the position according to the directions shown by the diagrams and signs on the pack;

- if ropes, straps or chains are used, ensure that they are able to take the weight of the pack and that they are in good condition;

- use slow continuous movements when moving the pack to avoid jerking the ropes, chains etc.;

- do not tilt the package excessively to avoid toppling;

- never stand in the vicinity of loading/unloading equipment (forklift trucks, cranes etc.).

a Before proceeding with installation, remove the securing brackets having removed the relative fastening screws and washers.

After removing the cardboard packing and the protective material, lift the upper covering element.

Loosen the screws (A) to remove the side walls.

The side walls must be removed by lifting them more than 2 cm sideways from the body Be careful not to damage the coating of components.

Remove the 4 screws (B), freeing the stove from the securing brackets (see pictures).

a Unpack the product being careful not to damage or scratch it, take the accessories kit and any pieces of polystyrene or cardboard

used to wedge moveable parts etc. out of the stove.

Please remember to not leave parts of the packaging where they are within the reach of children (plastic, polystyrene bags, etc.)

which may be dangerous and dispose of them according to legislations currently in force.

4.0 pREpARATION fOR INSTALLING

Fig. 26 Fig. 27

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DT2010074-06

With reference to the safety standards in force overseeing electrical appliances, in the instance of all installation, maintenance or intervention

operations, which involve accessing the inside of the cladding or smoke box, you must seek the assistance of a Piazzetta Technical Support Centre

or qualied personnel.

Cladding

•Subsequent to carrying out assembly operations and the installation of the external room thermostat, assembly of the stove cladding must be

carried out; to complete this operation, refer to the "Cladding instruction manual" provided.

5.0 INSTALLATION

•Piazzetta's technological research and development mean that this

pellet stove offers the advantages of the “Multifuoco system”, a

system EXCLUSIVE to and PATENTED by Gruppo Piazzetta S.p.A.

A truly innovative system for pellet stoves.

•The Multifuoco System revolutionises all ventilated hot air diffusion

systems currently associated with pellet stoves: not only is the heat

produced by the reside distributed from bottom-up within the room,

but it is also possible to channel this heat, via a 75 mm diameter

exible pipe, to diffuse the hot air into adjacent rooms (Fig. 29).

This exclusive oor heat diffusion system has the signicant advantage

of even temperature distribution (Fig. 28).

The warm air produced is driven by two fans via the grille located at

the front in the bottom part of the appliance.

•The grille has two deectors (Fig. 30) to deviate the ow of air as it

comes out of the front part. To deect the heat current in the desired

direction simply adjust the angle of the deectors using the lever (A)

supplied (Fig. 31).

DT2010145-04

5.1 mULTIfUOCO SySTEm

Fig. 28

Fig. 29

Fig. 30

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DT2010071-05

DT2030163-00

DT2030162-00

DT2033662-00

Instructions for ducting hot air

•The ventilation kit which expels heat into the atmosphere is equipped

with two Y shaped elements (one per motor) which allow the air ow

to be doubled up, directing it via a exible pipe to the back of the stove

from where it can be directed into other environments.

•The following are some examples of installation of the stove and

examples of warm air ducting systems for heating. These examples

are merely indicative, performance is optimal with 7.5 cm diameter

pipes coated as described in the subsection “Wall and ceiling

ducting systems” and with a maximum total length of pipe of 16

meters.

This length is given by the sum of the individual lengths of pipes for

each fan, plus the elbows and Y elements and is subject to checks of

the dimensions and the insulation classication of the environment to

be heated.

a Every bend and/or Y connector is comparable to 1 metre of

straight ducting.

•The examples show ducting system of the two fans. Each gure

represents only one example of the many possible solutions.

•To achieve some of the proposed solutions it is necessary to use

a exible pipe with a diameter of 75 mm, air outlet vents and Y

elements, none of which are supplied.

Solution 1 - Fig. 32 - 34:

The stove is installed in the room with the heat directed to the front only

(Fig. 32), as standard or from a side aperture (Fig. 33-34).

Fig. 31

Fig. 32

Fig. 33

Fig. 34

H072043UK0 / DT2001455 - 00 19

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DT2033662-00

Fig. 35

Fig. 37

Fig. 36

Solution 2 - Fig. 35:

The stove is installed in the room which is to be heated with the heat

directed to the front by one fan. In addition, a second fan directs heat to

the rear allowing the heating a second room.

a For the example shown in Figure 35, it is necessary to use a

non-closable vent.

Solution 3 - Fig. 36:

The stove is installed in the room which is to be heated with the heat

channelled in three directions.

Using a Y element one fan can propel the heat in two directions.

The other fan will only have a front outlet.

a For the example shown in Figure 36, you can install an outlet

with closure for the shortest section allowing for some of the

air to be released, without ever closing completely to prevent

overheating.

Solution 4 - Fig. 37:

Extending the previous solution, with the stove installed in the room to

be heated and heat directed to the front and rear of the appliance with

doubling-up using a second Y element at the rear as shown.

a For the example shown in Figure 37, to avoid overheating,

install a vent with closure for the shortest section allowing for

some of the air to be released.

H072043UK0 / DT2001455 - 00

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Piazzetta P937 Installation, Use And Maintenance Manual

Brand: Piazzetta

Model: P937

Category: Pellet stove

Type: Installation, Use And Maintenance Manual

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Piazzetta P937 Installation, Use And Maintenance Manual

Piazzetta P937 Installation, Use And Maintenance Manual

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