Centrometal Centropelet zvb 16 Owner's manual

HEATING TECHNIQUE

CentroPelet ZVB 16,20,24,32

TURZVB-01-2017-ENG

Centrometal d.o.o. - Glavna 12, 40306 Macinec, Croatia, tel: +385 40 372 600, fax: +385 40 372 611

TECHNICAL INSTRUCTIONS

for installation, use and maintenance

of pellet boiler

Dear Customer,

We thank you for having chosen one of our products, the fruit of technological experience and of continual research for

a superior quality product in terms of safety, dependability, and service.

In this manual you will nd all the information and useful suggestions to use your product with the maximum safety

and efciency.

• Incorrect installation, incorrectly performed maintenance, improper use of the product release the manufacturer from

every eventual damage derived from the use of the boiler.

• The unit cannot be used as an incinerator. Do not use fuels other than pellets.

• This manual has been realized by the manufacturer and constitutes an integral part of the product and must remain

with it during its entire lifetime. If the product is sold or transferred, be sure that the booklet is present since the

information contained in it are addressed to the buyer, and to all those persons of various titles who complete the

installation, use and maintenance.

• Carefully read the instructions and the technical information contained in this manual, before proceeding with the

installation, use, and any operation on the product.

• The observance of the indications contained in the present manual guarantees the safety of people and the product,

the economy of use and a longer functioning lifetime.

• Although the carefully studied design and the risk analysis done by our company has permitted the realization of a

safe product, in any case, before effecting any operation on the boiler, it is recommended to keep said manual

avail-able and pay scrupulous attention to the instructions written therein.

• Be very careful when moving the ceramic details where present.

• Check the precise atness of the pavement where the product will be installed

• The wall where the product will be placed must not be constructed in wood, or in any case, made of an inammable

material, and in addition it is necessary to maintain a safety distance.

•While the boiler is in operation, several parts (door, handle, sides) can reach high temperatures. Therefore

pay attention and use the proper precautions, above all in the presence of children, elderly or disabled persons, and

animals.

•Assembly must be performed by authorized persons .

• Diagrams and drawings are furnished for the purpose of illustration; the manufacturer, with the intent of pursuing a

policy of constant development and renewal of the product can, without any notice, make any modications that are

believed opportune.

•When the boiler is working at its maximum speed, it is strongly suggested to wear gloves while handling with the

door for pellets loading and the door handle.

• It is prohibited to install in bedrooms or in explosive environments.

• Only use replacement parts recommended by the supplier.

In the event of a fire, disconnect the power supply, use an extinguisher and call the fire fighters if

necessary. After that contact the Authorized Person.

boiler

when the device is operating. All our boilers are trial lighted on the construction line.

This instruction booklet is an integral part of the product: : make sure that it always accompanies the appliance, even

in case of transfer to another owner or in the case of transfer to another place. In the event of damage or loss, request

a copy from the area technician.

These symbols indicate specic messages in this booklet:

ATTENTION:

This warning sign indicates that the message to which it refers should be carefully read and

understood, because failure to comply with what these notices say can cause serious damage to

the boiler and put the user’s safety at risk.

person, which

verifies the installation and completes the warranty.

Any kind of tampering or unauthorized substitution with non-original spare parts can be

dangerous to the safety of the operator and relieves the manufacturer from any civil or

criminal liability.

INFORMATION:

This symbol is used to highlight information which is important for proper boiler operation. Failure

to comply with these provision will compromise use of the boiler and its operation will not be

satisfactory.

Our company declares that the boiler conforms to the fol-

lowing norms for the EC European Directive labelling:

• 2004 /108 CE (regulation EMC) and following

amendments;

• 2006/95 CE (low tension regulation) and following

amendments;

• 2011/65 EU (RoHS 2 directive);

• 2006/42 EC (machinery directive);

• The New Rules of Construction Products (CPR-Con-

struction Products Regulation) No. 305/2011 regarding

the construction world;

• EN 55014-1; EN 55014-2; EN 61000-3-2; EN 61000-3-3;

EN 60335-1; EN 60335-2-102; EN 62233, EN 50581.

Safety information

Please carefully read this use and maintenance manual

before installing and operating the boiler!

If clarification is needed, please contact the authorised

person

•The pellet boiler must only be operated in living envi-

ronments. This boiler, being controlled by an electronic

board, permits a completely automatic and controlled

combustion; the exchange, in fact, regulates the lighting

phase, 5 power levels and the shut down stage, guaran-

teeing the safe operation of the boiler.

• The basket used for combustion allows most of the ash

produced by the combustion of the pellets to fall into

the collection compartment. Nevertheless, check the

basket daily, given that not all pellets have high quality

standards (use only quality pellets recommended by the

manufacturer).

Responsibility

With the delivery of the present manual, we decline all

responsibility, both civil and penal, for accidents deriving

from the partial or total lack of observance of the instruc-

tions contained herein.

We decline every responsibility derived from improper

use of the boiler, from incorrect use by the user, from un-

authorized modications and/or repairs, from the use of

replacement parts that are not original for this model.

The manufacturer declines every civil or penal, direct or

indirect responsibility due to:

• Lack of maintenance;

• Failure to observe the instructions contained in the

manual;

• Use in non-conformity with the safety directives;

• Installation in non-conformity with the norms in force in

the country;

• Installation by unqualied or untrained personnel;

• Modications and repairs not authorized by the manu-

facturer;

• Use of non-original replacement parts;

• Exceptional events.

Norms and declarations of conformity

 

         

place;

 

boiler

6mm diameter pellets of the type recommend-

ed by the manufacturer;

 

boiler the discharge tubes must be con-nected

with the flue;

 -

tainer must never be removed;

    boiler 

must have a sufcient exchange of air;

boiler

the door open or the glass broken;

boiler 

the boiler should be used only for the in-tended

purpose;

 -

fore dangerous. Do not put in the hopper other

than wood pellets;

boiler-

es, glass, handle and tubes become very hot:

during operation do not touch these parts with-

out adequate protection;

 

off the boiler.

Charge pellet

Fuel is loaded from the upper part of the boiler by

opening a door. Pour the pellets in the hopper. When

empty, it will hold slightly more than a 45 kg sack.

This is easier if performed in two steps:

Pour half of the contents of the bag into the hopper and

wait for the fuel to settle on the bottom.

• Then pour in the second half;

• Keep the cover closed , after loading the pellets , the lid

of the fuel tank;

The boiler is a product by heating, presents the ex-ternal

surfaces particularly hot. For this reason, we recom-

mend extreme caution when operating in particular:

•Do not touch the boiler body and the various compo-

nents, do not approach the door , it could cause burns;

• Do not touch the exhaust fumes;

• Do not perform any type of cleaning;

• Do not dump the ashes;

• Do not open the ash tray;

• Be careful that children do not come near;

• The appliance is not intended for use by persons ( in-

cluding children) with reduced physical, sensory or men-

tal capacities , or lack of experience or knowledge, unless

they have been given through the intermediary of a per-

son responsible for their safety, supervision or instruction

concerning use of the appliance;

•Do not use the boiler as a ladder or scaffold;

•Do not put clothes to dry on the boiler.

Any clothes hangers and suchlike must be kept a suitable

distance from the boiler. - Risk of fire

•Carefully explain that the boiler is made from ma-

terial subjected to high temperatures for the elderly , the

disabled, and in particular for all children, keeping them

away from the boiler during operation

•Do not touch the boiler with wet hands: the boiler

has electrical components that could produce sparks if

handled incorrectly.

•Never open the door of the pellet boiler while the

boiler is in operation.

•The boiler must be connected to an electrical

system equipped with an earthing conductor in accord-

ance with regulations 73/23 and 93/98 EEC;

• The system must be of adequate electrical power de-

clared the boiler;

•Do not wash the inside of the boiler with water.

The water could damage the electrical insulation, causing

electric shock;

•The pellet boiler is not a cooking element;

• External surfaces during operation can become very

hot. Do not touch them except with the appropriate pro-

tection.





of pellets touch any hot surfaces.

Instructions for safe and efcient use

Operating area

For proper functioning and a good temperature

distribution, the boiler shoul be positioned in a location

where it is able to take in the air necessary for

combustion of the pellet (about 40 m3/h must be

available), as laid down in the standard governing the

installation and in accordance with local national

standards.

The volume of the room must not be less than 30 m3. The

air must come in through permanent openings made in

walls (in prossimity to the boiler) which give onto the

outside, with a minimum cross-section area of 100 cm2.

These openings must be made in such a way that it is not

possible for then to be obstructed in any way.

Alternatively, the air can be taken from rooms adjacent to

the one which needs ventilating, as long as they are

provided with an air intake from the outside, and are not

used as bedrooms or bathrooms, and provided there is

no fire risk such as there is for example in garages,

woodsheds, and storerooms, with particular reference

to what is laid down in current standards.

It is not permissible to install the

boiler in bedrooms, bathrooms, or

in a room where another heating

appliance is installed (fireplace, boiler etc.)

which does not have its own independent air

intake. Locating the boiler in a room with

an explosive atmosphere is prohibited.

The floor of the room where the boiler is to be

installed must be strong enough to take its

weight. If walls are ammable, maintain a minimum

distance of 10 cm at the rear (A), di 40 cm at the

side (B) and 150 cm at the front.

If the room contains objects which are believed to

be particularly delicate, such as drapes, sofas and

other furniture, their distance from the boiler

should be considerably increased.

Connection to the external air intake

It is essential that at least as much air must be able to

flow into the room where the boiler is installed as is

required for proper combustion in the appliance and for

the ventilation of the room.

This can be effected by means of permanent openings in

the walls of the room to be ventilated, which give onto the

outside, or by single or collective ventilation ducts.

For this purpose, on the external wall near the boiler, a hole

must be made with a minimum free cross-section of 100

cm2. (equivalent to a round hole of 12 cm diameter or a

square hole 10x10 cm) protected by a grille on the inside

and the outside.

The air intake must also: communicante directly with

the room where the boiler is installed be protected by a

grille, metal mesh or suitable guard, as long as this does

not reduce the area below the minimum.

Be positioned in such a way as to be impossible to

obstruct.

It is not compulsory to connect the air

intake directly with the boiler (so that

it draws air directly from outside), but it

essential at all events to ensure an airow of 50

cubic metres per hour by the use of a hole of the



In the presence of wood oors, install a

oor protection surface in compliance

with the rules in force in the country

Min

100cm²

Min 40cm

Connection to the ue pipe

The ue pipe must have internal dimensions not larger

than 20x20 cm, or diameter 20 cm. In the event of larger

dimensions, or of the ue pipe being in poor condition ( for

example cracks, poor insulation, etc.), it is advisable to t

a stainless steel pipe of suitable diameter inside the ue

pipe throughout its length, right up to the top.

Check with suitable instruments that there is a draught

between 6 Pa and 10 Pa. This type of connection ensures

the evacuation of the fumes even in the event of a

temporary power cut.

At the bottom of the ue pipe, provide an inspection cap

to allow periodic checking and cleaning, which must be

done annually. Make a gas-tight connection to the ue

pipe, using pipes and connectors as recommended by us.

You must ensure that a windproof cowl should be tted

which complies with the standards in force

Connection to an external ue with insulated or

double-wall pipe

The only type of pipe which is permissible is insulated

(double-walled) stainless steel, smooth on the inside,

xed to the wall. Flexible stainless steel pipe must not be

used. At the bottom of the ue pipe, provide an inspection

cap to allow periodic checking and cleaning, which must

be done annually. Make a gas-tight connection to the ue

pipe, using pipes and connectors as recommended by us.

You must ensure that a windproof cowl should be tted

which complies with the standards in force.

Check with suitable instruments that there is a draught

between 6 Pa and 10 Pa.

Connection to the ue pipe

For proper functioning, the connecting pipe between

the boiler and the chimney or flue duct must have a

slope of not less than 3% in the horizontal stretches, the

length of which must not exceed 2 metres and the

vertical distance between one tee connector and

another (change of direction) must not be less than 1,5

Check with suitable instruments that there is a

draught between 6 Pa and 10 Pa. At the botton of the

flue pipe, provide an inspection cap to allow periodic

checking and cleaning, which must be done annually.

Make a gas-tight connection to the flue pipe, using pipes

and connectors as recommended by us. You must

ensure that a windproof cowl should be fitted which

complies with the standards in force. Fig. 3: connection to an

external ue with insulated

or double-wall pipe.

Fig. 2: connection to the

ue pipe.

Fireplace ue gas

Avoid contact with combustible materials (example:

wooden beams) and in any case provide for their insulation

with ame retardant material. In case of pipe penetrations

through roofs or walls is recommended to use special

kits crossing, certificates, are available commercially.

In the event of a chimney fire, turn off the boiler,

disconnect from the network and never open the door.

Then call the authorities.

The chimney cap

The chimney cap must respect the following requirements:

• It must have the equivalent diameter and internal form

of the ue.

• It must have a useful outlet diameter of not less than

double that of the ue.

• The chimney cap on the roof or that remains in contact

with the outside (for example, in case of open lofts or at-

tics), must be covered with elements in brick or tile and

must, in any case, be well insulated.

• It must be constructed to prevent rain, snow, and ex-

traneous bodies from entering the ue and so that the

discharge of the products of combustion is not inhibited

by wind from any quarter or strength (wind-proof chim-

ney cap).

• The chimney cap must be positioned in such a way as

to guarantee the adequate dispersion and dilution of the

products of combustion and in any case, must be out of

the reux zone. This zone has different dimensions and

forms according to the angle of inclination of the roof so

it is necessary to adopt minimum heights (Fig. 2).

• The chimney cap must be a wind-proof type and must

be above the ridge.

• Eventual structures or other obstacles that are higher

than the chimney cap must not be too close to the

chimney cap itself.

Fig. 5: Characteristics of chimney

YES NO

REMARKS:

- The appliance must be installed by a qualied

technician in possession of the technical and professional

requirements according to the DM37/2008 that, under its

responsibility, to ensure compliance with the rules of good

technique.

- the boiler must be connected to a heating system and/or

to a network of production of sanitary hot water, consistent

with its performance and its power

- you need to keep in mind all laws and national, regional,

provincial and municipal laws of the country in which you

installed the device

- Check that the oor is not ammable: if necessary use a

suitable platform

- In the room where the generator must be installed to

heat must not pre-exist or be installed with an extractor

hood or ventilation ducts of the collective type.

Should these devices be located in adjacent rooms

communicating with the installation, and ‘prohibited the

simultaneous use of the heat generator, where there is a

risk that one of the two rooms being placed in depression

than the other

- It is not permissible to install in bedrooms or bathrooms

- For hydraulic connections (see next chapter) it is

advisable to use where possible of hoses

Distance to objects

The boiler should be inspected on all sides, so you have

to keep a distance of at least 40 cm at the back and

sides. It is also recommended to keep the pellets and all

ammable materials at a suitable distance

40 cm

100 cm

40 cm

Technical characteristics CentroPelet ZVB 16

Heat output range

Pellet consume

Efficiency

Flue gas tube connection

Fresh air supply connection

Pellet tank volume

Water amount in stove

Autonomy

Power supply

Power consume at nominal power

Dimensions (width/depth/height)

Net weight

kg/h

ø mm

lit

Model

ø mm

V / Hz

ZVB 16

4,29 - 14,4

1,02 - 3,37

89,11 - 87,87

29,5-9

230/50

140-350

562x700x1081

180

687

1081

701

DEF

Flue gas

exhaust

Fresh air supply

200

190

199

208

701

562

Outlet 3/4" Inlet 3/4"

Heat output range

Pellet consume

Efficiency

Flue gas tube connection

Fresh air tube connection

Pellet tank volume

Water amount in stove

Autonomy

Power supply

Power consume at nominal power

Dimensions (width/depth/height)

Net weight

kg/h

ø mm

lit

Model

ø mm

V / Hz

ZVB 20

5,21 - 17,51

1,2 - 3,88

92,13 - 88,82

54 - 16,5

230 / 50

100 - 300

610x785x1240

250

ZVB 24

Technical characteristics CentroPelet ZVB 20/24

80 50

5,21 - 21,51

1,2 - 4,85

90,39 - 88,82

54 - 13,5

230 / 50

100 - 300

610x785x1240

250

99 686

785

221

62,5

142

156

280,50

384

155

Outlet 3/4"

1/2 "

610

785

Inlet 3/4"

Flue gas exhaust

1240

Fresh air supply

connection

Technical characteristics CentroPelet ZVB 32

Heat output range

Pellet consume

Efficiency

Flue gas tube connection

Fresh air tube connection

Pellet tank volume

Water amount in stove

Autonomy

Power supply

Power consume at nominal power

Dimensions (width/depth/height)

Net weight

kg/h

ø mm

lit

Model

ø mm

V / Hz

ZVB 32

6,34 - 29,14

1,43 - 6,48

91,64 - 90,65

100

38,5 - 12,5

230/50

100-300

670x870x1360

305

Fresh air supply

100

Flue gas exhaust

108 757

866

140

135

413

303

266

104

439,50

188

Outlet 3/4"M

Inlet 3/4"M

1/2"

1358

670

870

Boiler start up

Starting the boiler

Press button for a couple of seconds until the

boiler starts.

(Fig. 2)

Button is used to switch on and / or off the boiler and to

exit programming.

Buttons and are used to adjust temperature, for

displays and for the programming functions.

Buttons and are used to adjust heating power.

Button is used to adjust temperature and programming

functions.

The upper and lower displays are used to view different

messages.

“Fan” will be displayed on the

upper display and “Acc” on the

lower one. During this phase the

unit will carry out a diagnosis

(around 20 seconds) on the fume

extraction system.

“LOAD WOOD”, is the next phase,

which indicates pellets should

be fed. The glow plug will heat

up to light the re.

When the fume temperature is

50º C (approx. 10 minutes), the

boiler will confirm the ignition:

“FirE” will be shown on the

upper display and “ON” on the

lower one.

After this phase, which lasts

around 5 minutes, the heating

power (es. po 6) and the room

temperature (es. 25°), will be

simultaneously shown on the

upper display, and the system

delivery water temperature will

be shown on the lower display.



Before switching on the pellet boiler, make sure that the

pellet hopper is full, the combustion chamber is clean,

the glass door is closed, the power supply plug is

connected and the switch on the back is set to “1.”

The LED is on when the parameter

UT01 on the menu is not on OFF and

the weekly or daily programming are

set.

“SET”

LED SYMBOL DESCRIPTION

The LED starts up every time the boiler

is loading pellets

The LED blinks when the board

signalises a change in temperature

or power set by the infrared remote

control.

The LED is on when the room

temperature reaches the value set on

the menu SET Water.

The LED blinks to indicate that you are

entering the menu user/technician or

that you are modifying the temperature

set.

The LED switches on when the water

circulator is working.

Charge pellet

Fuel is loaded from the upper part of the boiler by

opening a door. Pour the pellets in the hopper. When

empty, it will hold slightly more than a 45 kg sack. This is

easier if performed in two steps:

•

Pour half of the contents of the bag into the hopper and

wait for the fuel to settle on the bottom.

•

Then pour in the rest.

The brazier should be cleaned before each

starting.

      



pellets touch any hot surfaces.

Remove any components wich might

burn from the rebox and from the glass

(various instructions and adhesive labels)

It is advisable to use dry wood pellets, up

to 6 mm in diameter.

If the flame does not start up correctly within 10

minutes, the boiler jams: you will read the words “ALAR”

on the upper display and the words “NO ACC”: blinking on

the lower display.

Wait 10 minutes until the cooling phase is completed,

open the door, empty the brazier and start a new light-up.

Fig. 2

   

boiler

Turn off the pellet boiler by

pressing button , for a couple

of seconds until “OFF” is shown

on the upper display

REMARKS:

In case of repeated ignition lock-outs, while pellets are

fed regularly, there may be a problem caused by a failing

electric glow plug. In this case, while you wait for a

technician, the pellet boiler boiler can be manually started

by using solid fuel cubes (firelighters).

Manual starting procedure:

• open the door;

• take a solid fuel cube and place it inside the brazier

together with some pellets;

• light a match and set re to the solid fuel inside the

brazier;

• wait a couple of minutes, close the door;

• follow the regular ignition procedure.

is a value which can go from 0 to 5. Pressing the key to

increase power you can scroll the 5 available speeds.

If you set the value “0”, you will deactivate

On the following example, the

fan for hot air is switched off.

The speed is set on “0”.

On the following example, the

fan for hot air is working at its

highest speed 5.

Use the keys and to increase and reduce the

wished value.



Pellet feeding will stop immediately but the boiler will

continue working until the accumulated heat is fully

consumed, turning itself off automatically after a

maximum of 30 minutes.

REMARKS:

The boiler is fitted with

an automatic device that allows

cleaning the brazier after a

given period of time: when this

time is detected, the boiler fire

automatically reduces and

“PUL FIRE”; is shown on the display. After some minutes,

the boiler will start working regularly.

The heating power is set by the

keys and . A heating

power at Po 9 is suggested

during the first working hours of

the boiler.

To set the water temperature press the key . only once.

You will see the words “Set H2o” blinking on the upper

display. You will read the water temperature on the lower

display.

To set the room temperature,

press the key : twice: you

will see the words “SET ARIA”,

blinking on the lower display.

You will read the set temperature

on the upper display.

Use the keys e to change the value.





Room temperature setting

Fan speed setting for hot air

It is possible to activate or deactivate the room ventilator

placed on the front part of the boiler.

The fan can be set with 5 different working speeds.

To set the fan for hot air, please join the following procedure:

press the key twice to enter the setting menu for room

temperature.

On the upper display, next to the room temperature, there

Do not use any flammable liquid to start

the boiler. During the reload phase, do not

bring the bag of pellets in contact with

the hot boiler.

This adjustment is only useful for turning

on and off the hot-air delivery system

because the temperature coming

from the grates depends on the boiler

status.

Do not unplug the power plug to turn

off the boiler; wait until the automatic

shutdown cycle nishes: the continuous

operation of the fumes extraction fan is normal

and may indicate that the boiler is still hot. In the

event of low temperatures, it might happen that

the boiler starts the smokes fan and circulator for

some minutes in order to prevent ice formation

on the pipes of the system. in the event there is a

power drop, the main board will exhaust the smokes

residuals as soon as the power supply is back on.

In order to do that, the main board will increase the

speed and show the words “Cool FIRE” on the display.

As soon as the cooling phase has been completed,

the boiler will automatically start up working as it

was set before the power drop.

Room sensor

Internal room sensor



Only when the laying is nished recommended to check

that the probe is lifted from its surroundings and away

from the structure of the hot boiler, to prevent it from

detecting incorrect temperatures.

The room probe is located at the back of the boiler. When

using the internal thermostat, you should always set a

slightly higher temperature a few degrees (eg 22 ° C, if

you want to 20 °C environmental) because the probe is

affected, however, the influence of the hot boiler body.

The boiler can work with the “boiler

modulation” (standard) or mode ECO-STOP.

Once you have connected the external

thermostat the boiler disables the internal

thermostat.

The boiler has set the standard 



External room sensor



The external thermostat is not included with the

boiler and is borne by the user.

The boiler can also be controlled in temperature by a

thermostat external environment. It is placed in a

median position with respect to the local installation and

ensure a better match between the heating temperature

required and that actually provided by the same.

Installation

Connect the two wires of the cable coming from the wall

thermostat placed in the connector clamp. Insert the

connector into the socket on the back of the boiler.

Example of operation:

If the room temperature detected by the sensor and

highlighted on the control panel is 15° C and the set

temperature is 20 ° C, the boiler will follow a pre-

established ramp up to the 5 th power and to the

achievement of the target leads to the heater is minimum

power. Once 20° C is reached, it will go into standby

mode et displays the  . When the

room temperature drops below the value set on the

control panel (for example 18° C) and a sufficient shut

down time has elapsed, the boiler will come back on

automatically and continue running until again reaching

20° C.

Regardless of the operation of the external thermostat,

the boiler is equipped with an internal thermostat that

works in the following way:

Boiler modulation turned on

The boiler, when the set temperature is reached, will

modulate its output to the minimum, that is, until there is

again power demand. If despite the reduced power

operation, in the modulation mode, the water

temperature continues to rise to over 15° C of the set

temperature and remains so for an interval of at least 60

minutes, the boiler will turn off. Across the display will

show “STOP-FIRE.” The subsequent automatic restart

will occur as soon as the water temperature drops below

15° C above the set water temperature.



If you enable this functionality the boiler, when the set

temperature is reached, The boiler will stabilize at

minimum power for a time T1 which can be from a

minimum of 1 minute, to a maximum of 30 minutes. If

by this time there is a further request of temperature,

the boiler will automatically turn off and the display will

show the message “STOP-FIRE T ECO OFF”.

The boiler will automatically turn on only if there is a

demand from the thermostat temperature. When the

temperature drops below the value set on the thermostat

(eg 18 ° C), the heater turns back on automatically until

again reaching 20° C.

All the operations of automatic re-

ignition, and in the case of lowering

the ambient temperature of hot water

demand, are possible if the heater is on or in ECO-



off using the power button, the boiler does not

perform automatic re-ignition upon temperature

variation or if there is a demand for hot water. It is

recommended that, in the presence of the kit for

the production of domestic hot water, to disable

      

time to the hot water demand.

Plumbing system connection

There are 2 different types of systems:

- Closed vessel system

- Open vessel system.

Closed vessel system

This product has been designed and built to work with

closed vessel systems. In general, the closed vessel

system has the following expansion as the expansion

vessel pre-loaded. In addition to the expansion device,

the closed vessel system must be provided in accordance

with current Italian UNI 10412-2 (2009) by:

•safety valve

•thermostat control of the circulator

•device alarm sounds

•temperature Indicator

•pressure indicator

•audio alarm

•automatic adjustment

•safety thermostat with manual reset

•circulation system

Open vessel system

The open vessel system is a more secure system that

does not require the addition of further securities. The

replace stoves, wood boilers and stoves necessarily

require use of an open vessel system. A plant run open

vessel, connected to a thermoproduct, may provide for

circulator mounted on the return, in this way the system

would work at lower temperatures to the advantage of a

longer life. While working under optimal conditions, the

pump mounted on the back can push the water through

the tube pan on safety and can make it back in the system

through the inlet pipe causing a phenomenon of oxygen

that is highly damaging to life of the boiler.

To prevent this phenomenon, it is possible to apply the

following measures:

•lower the speed of the pump so as to reduce the

prevalence

•hold, if possible, the tray a little lower and raise the

maximum allowed the safety tube

•perform the separation between the safety pipe and the

discharge pipe, not at an angle of 90 ° but with a curved

connection.

The connection of the boiler to the

plumbing system must be made  by

specialized personnel who are capable of

carrying out installation properly, in compliance

with current standars in the country of installation.

The manufacturer will not be held responsible for

damage to persons or things in the event of failed

operation if the aforementioned warning is not

complied with.

Set funnel connected to sewers

Main flow (Hot water)

Return flow

(cold water)

Safety

valve pressure

3/4"

ZVB 20-32

The lling pressure of the system when cold must be

1 bar.

During operation, if the system pressure drops (due to

evaporation of dissolved gases in the water) to values

lower than the minimum indicated above, the user must

use the lling t ap t o b ring t he pressure b ack u p t o its

normal pressure.

For proper operation of the boiler when hot, the

pressure in the boiler must be 1,5 bar.

DEF

Flue gas

exhaust

ZVB 16

Inlet

Outlet

Ø50

Fresh

air intake

Ø80

The heating timer-thermostat function is used to program the pellet boiler boiler to automatically turn on and off

within a period of one week.

To access programming, hold down button for around three seconds, “UT01” will be shown on the upper

display: by pressing button several times and referring to the table below, the boiler can be programmed

according to your needs. Press button to exit the programming phase at any time.

These are the heating timer-thermostat parameters:

 Description Programmable

values

 OFF; Day 1, ...,Day7

H. timer-thermostat ena-

bling and disabling. Day of

the week setting

 From 00 a 23

Current hour setting

 From 00 a 60

Current minutes setting

 Reserved

Technical parameters

setting

 From 00:00 to 23:50 with

10-minute steps

Boiler first start-up time

adjustment

 From 00:00 to 23:50 with

10-minute steps

Boiler first shutdown time

adjustment

 Between on/off for days

from 1 to 7

Week day selection, ﬁrst

time activation

 From 00:00 to 23:50 with

10-minute steps

Boiler second start-up

time adjustment

Heating timer-thermostat

 From 00:00 to 23:50 with

10-minute steps

Boiler second shutdown

time adjustment

 Between on/off for days

from 1 to 7

Week day selection,

second time activation

 From 00:00 to 23:50 with

10-minute step

Boiler third start-up time

adjustment

 From 00:00 to 23:50 with

10-minute step

Boiler third shutdown time

adjustment

 Between on/off for days

from 1 to 7

Week day selection, third

time activation

 From 00:00 to 23:50 with

10-minute steps

Boiler fourth start-up

time adjustment

 From 00:00 to 23:50 with

10-minute steps

Boiler fourth shutdown

time adjustment

 Between on/off for days

from 1 to 7

Week day selection, fourth

time activation

 Description Programmable

values

UT01: Heating timer-thermostat enabling and disa-

bling and current hour setting.

This parameter is used to set the current day of the week

or to deactivate the set programming.

Press buttons and to select the desired value as

shown in the following table:

Example:

if today is Thursday, select “Day 4”; but select “OFF” to

start the pellet boiler boiler manually (without program-

ming) so that the heating timer-thermostat is disabled.