BURNiT WBS AC 20-Pell 25 User manual

TECHNICAL PASSPORT
INSTALLATION and OPERATION MANUAL
model:
serial number:
Set solid fuel boiler with pellet burner
WBS Acve - Pell
Version i0.1.1
EN

TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL

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TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
TABLE OF CONTENTS
1. EXPLANATION OF SYMBOLS AND SAFETY INSTRUCTIONS ........................................................ 4
1.1. Explanaon of symbols .......................................................................................................... 4
1.2. Requirements to boiler installaon room .............................................................................. 4
1.2.1. Instrucons to boiler installer ............................................................................................. 4
1.2.2. Instrucons to installaon user .......................................................................................... 4
1.2.3. Minimum clearances for installaon and combusbility of building materials ..................... 5
2. PRODUCT DESCRIPTION ............................................................................................................ 6
3. FUELS ........................................................................................................................................ 8
4. TRANSPORTATION OF THE BOILER AND BURNRER ................................................................... 9
5. DELIVERY OF THE BOILER AND BURNER.................................................................................. 10
6. INSTALLATION OF THE HEATING BOILER ................................................................................. 10
6.1. Requirements ...................................................................................................................... 10
6.2. Check door ghtness ........................................................................................................... 11
7. SETUP OF THE HEATING BOILER AND BURNER ...................................................................... 11
7.1. Connecng the boiler to a chimney .................................................................................... 11
7.2. Connecng the safety heat exchanger ................................................................................ 12
7.3. Connecng the boiler to the heang installaon ............................................................... 13
7.4. Connecon diagrams .......................................................................................................... 16
7.5. Connecng the boiler to the mains power supply ................................................................ 16
7.5. Pellet burner connecon to the fuel hopper and pellet auger ............................................ 20
7.6. Connecng the pellet burner to the mains power supply ................................................... 20
8. BURNER OPERATING ............................................................................................................... 23
8.1. Ignion ................................................................................................................................. 23
8.2. Combuson ......................................................................................................................... 23
8.3. Automac cleaning system .................................................................................................. 22
8.4. Installer prescripons regarding burner servicing and maintenance ................................... 23
8.5. Important recommendaon for long-lasng and correct operaon of the burner............... 23
9. OPERATION OF BOILER WHEN BURNING SOLID FUEL ............................................................ 24
10. OPERATION OF MICROPROCESSOR CONTROLER WHEN BURNING WOOD-PELLETS ........................ 27
11. SETTING OUTPUT MODES OF OPERATION OF THE PELL PELLET BURNER ............................ 35
12. OPERATION OF MICROPROCESSOR CONTROLER WHEN BURNING SOLID FUEL ........................ 38
13. WARRANTY TERMS ............................................................................................................... 44
14. TECHNICAL PARAMETERS OF SOLID FUEL BOILER WBS ACTIVE ........................................... 44
14.1. General features ................................................................................................................ 44
14.2. Technical parameters ......................................................................................................... 46
14.3. Elements of burner PELL .................................................................................................... 48
14.4. Technical parameters of fuel hopper FH 500 ..................................................................... 49
15. RECYCLING AND WASTE DISPOSAL ....................................................................................... 50

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TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
1. EXPLANATION OF SYMBOLS AND
SAFETY INSTRUCTIONS
1.1. Explanaon of symbols
CAUTION! –Important
recommendaon or warning
concerning safety condions during
installaon and operaon of the heang
boiler
DANGER! – fault or improper use
may cause injury or be hazardous
to life of humans or animals.
FIRE HAZARD! – fault or improper
installaon and operaon may
cause re.
INFORMATION –Important
informaon on the proper operaon
of the product.
1.2. Requirements to boiler installaon
room
This manual contains important
informaon for the safe and correct
installaon, start-up and trouble-free
operaon and maintenance of the heang
boiler.
The heang boiler can be used for heang
rooms only in the manner described in
this manual.
Note of the boiler type data on the
factory rang label and the technical data
provided in chapter 11 in order to ensure
proper operaon of the product.
1.2.1. Instrucons to boiler installer
During installaon and operaon, the
country-specic requirements and
regulaons must be observed:
• local construcon regulaons on the
installaon, air supply and exhaust
gas extracon as well as chimney
connecon.
• regulaons and norms concerning the
ng of the heang installaon with
safety devices.
iUse only original BURNiT parts

DANGER of intoxicaon,
suocaon.
Inadequate inow of fresh air
to the boiler room may result in
dangerous leak of exhaust gases
during boiler operaon.
-Make sure the air inlets and
exhaust gas outlets are not
clogged or closed.
-If faults are not remedied
immediately, the boiler must
not be operated, and the user
must be provided with wrien
instrucons on the fault and the
hazard it entails.

DANGER of re when burning
ammable materials or liquids.
-Flammable materials/liquids
must not be le in close proximity
of the heang boiler.
-Instruct system user of the
allowed minimum clearances
from surrounding objects.
It is mandatory to assure a backup
power generator of corresponding
rated power! (see 14.1)
1.2.2. Instrucons to installaon user

DANGER of intoxicaon or
explosion
Toxic gases may be discharged
when burning waste, plascs,
liquids.
-Use only the fuels indicated in
this manual.
-In case of danger of explosion,
ignion or discharge of exhaust
gases in the room, stop the
heang boiler from operaon.

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TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL

CAUTION! Danger of injury
/ damage of system due to
incompetent operaon.
- The heang boiler must be
serviced only by persons familiar
with the operaon manual.
- As a user, you are only allowed
to start the boiler up, adjust the
temperature of the boiler, shut
the boiler down and clean it.
- Unaended children must not be
allowed access to premises with
running pellet burner inside.
It is mandatory to assure a backup
power generator of corresponding
rated power! (see 14.2)
Safety rules for user operaon:
- Operate the heang boiler at a maximum
temperature of 80°C, and to that end
you must regularly inspect the boiler
room.
- Do not use ammable liquids for ignion
or increase of burner output.
- Collect ash in lid-covered reproof
containers.
- Clean the heang boiler surface using
non-ammable agents only.
- Do not place ammable objects onto the
heang boiler or in its proximity. (see
diagram 1 for the minimum clearances)
- Do not store ammable materials in the
boiler room.
1.2.3. Minimum clearances for
installaon and combusbility of
construcon materials
The applicable minimum clearances in
your country may dier from the ones
specied bellow. Please, consult your
installer.
The minimum distance from the heang
boiler or exhaust gas pipe to objects or
walls must be at least 200 mm.
For general safety consideraons, we
recommend that the boiler be placed on
a foundaon with height of 100 mm made
of class A material, see table 1.
Diagram 1
Recommended clearances between the
boiler and walls.
Table 1. Combusbility of construcon
materials
Class
А – non-
combusble
Stone, bricks, ceramic
les, baked clay, soluons,
plaster free of organic
addives.
Class
B – hard
combusble
Gypsum board panels,
basalt ber needled felt,
berglass board, AKUMIN,
Izomin, Rajolit, Lignos,
Velox, Heraklit.
Class С1/С2
Medium
combusble
Wood beech, oak, Wood
sowood, layered wood
Class
C3 – easy
combusble
Asphalt, cardboard,
cellulose, tar, berboard,
cork, polyurethane,
polyethylene.

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TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
2. PRODUCT DESCRIPTION
WBS Acve boiler is with built-up
controller and electric fan for forced air
feed, for ring solid fuel - rewood , Class
B wood briquees or coal. Designed to
sasfy the heang demands of medium
to large sized spaces. They are engineered
for burning solid fuel only and provide the
opon for ng pellet, oil or gas-red
burners.
Set BURNiT WBS Active – Pell: tested
according to European standards
EN 303-5, class 5.
2.1. Descripon of WBS Acve
•Design. Boiler body is made of high-
quality boiler steel sheets with thickness
of 5 mm for the combuson chamber
and 3 mm for the water mantle.
•Built-up controller. The electronic
control unit controls the operaon of
the ue fan, the circulaon pump of
the central heang and the pump of
the domesc hot water system (DHW).
The power of the fan is regulated in
relaon to the fuel consumed and the
momentary chimney dra.
•Ecient. The ue gas makes a three-pass
movement around three water-lled
barriers in the combuson chamber on
its way to the chimney. This way the
gas is cool when it leaves the boiler and
its energy has been transferred to the
water in the mantle. The water mantle
embraces the combuson chamber
in full to ulize the emied heat most
eciently. To keep from losing heat into
the ambience, the boiler is insulated on
the outside by 50 mm high-temperature
wool.
•Reliable and safe. The heat exchanging
tubular grill is protected by a replaceable
metal grate. A complex of safety devices
provide for the safety of the appliance.
•Versale. Designed for ring wood
with opon for adapng to other fuel
types by mounng a gas, oil- or pellet-
red burner on the specially designated
ange located on the lower door.
• Fuel loading door
• Cleaning door (combuson chamber)
• Air aps for feed-in air adjustment
• Dra regulang ap, mounted on ue
end
• Safety heat exchanger
• Safety devices of the boiler
2.2. Descripon of pellet burner
The BURNiT Pell pellet burner for hot
water boilers is designed to burn only and
exclusively wood pellets and it is intended
to heat up heang boilers. The built-in
control unit, automac cleaning system
and internal pellet auger ensure the
automated operaon of the burner and
opmal burning of the fuel.
Design.
The burner is made of high-quality
stainless steel able to withstand
temperatures of up to 1150°С. The burner
must be installed on a heang boiler.
The burner consists of two parts:
combuson chamber tube and
external tube with sheet metal mantle.
Longitudinally, under the housing, there
are blow chamber, fuel ignion heater,
fan and power supply. On the upper part
of the burner there is a feeder chute to
which the pellet auger is aached. The
housing of the burner has been designed

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TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
to meet all regulatory safety requirements
(no sharp or protruding elements) with
operang temperature not exceeding
50°C.
The combuson chamber consists of two
tubes:
Ember resistant steel tube inside the
burner with holes for air intake along
its enre length, opening for the hot air
from the fuel ignion heater, opening for
photosensor.
Outer stainless steel tube. Between the
two tubes there is a gap which provides
for free circulaon of the air necessary
both for cooling and oxygen supply into
the combuson chamber.
The feeder chute allows 360° rotaon
for its best convenient posioning when
connecng the pellet auger to the hopper.
Diagram 2. Pellet burner Pell design
• Built-in controller.
The main control unit, located in the
burner, manages the enre heang
process. Controler funcons:
Controler funcons:
1) fully automated ignion and pellet
feed;
2) self-cleaning funcon (adjustable 1-6
mes over 24 hours at equal intervals),
programmable start me;
3) controls the operaon of the
circulaon pump of the central
heang;
4) controls the operaon of the pump of
the domesc hot water;
5) opon for control by room thermostat;
6) mer;
•Photo-sensor - monitors the power of
the burner ame
•Internal auger
• Dry contactless resistance heater
assuring ignion of fuel
•Innovave cleaning system of the
combuson chamber
•Air feed fan, step-regulated (0% to 100
%).
2.3. Burner safety devices
•Elbow-shape feeder chute. The
geometrical shape of burner feeder
chute prevents backre entry from
burner into pellet hopper.
•Thermostac protecon (80°С). The
thermostac protecon is ed on the
feeder chute. When the surface of the
feeder chute reaches 80°С, the control
stops the feeding of pellets into the
burner and signals for fault.
•Fuse. In case of electrical fault in the
system of the burner (short circuit, high
current, etc.), the overload is borne by
the electrical fuse ed on the main
control panel of the burner (10 А).
•Power interrupon. In case of power
interrupon, all parameter sengs are
stored in the memory of the controller.
Upon the subsequent restart of the
burner, the controller resumes the

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TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
execuon of the program from the point
when the power interrupon occurred.
3. FUEL
All pellets are biomass manufactured
from common low-growing plants and
trees. The most common household type
pellets are made of sawdust and milled
wood chippings which are waste material
from wood used in the producon of logs,
furniture and other products. Wood is the
richest raw material which does not have
any impact on the producon costs of
food products or ethyl alcohol (ethanol).
The raw material is processed under high-
pressure and temperature and is pressed
to produce small-size cylindrical pellets.
The producon process may ulize so
wood material (such as sowood, pine),
hardwood (oak) as well as recycled waste
wood. Wood pellets are produced in
hammer mills or wood pellet plants.
Advantages of wood pellets:
Convenient storage. Pellet bags can be
stored on a small area in a dry garage,
basement, service room or shed.
Easy loading. In most cases the boiler
hopper needs loading only once a week –
this depends on the hopper capacity.
Beer control of fuel quanty. The small
size of the pellets allows for precise fuel
feeding. On the other hand, the supply
of air for reaching opmal combuson
eciency is easier to adjust since the
fuel quanty in the combuson chamber
remains constant and predictable.
Fuel eciency. High combuson eciency
is also determined by consistently low
moister content of pellets (consistently
under 10% as opposed to 20% to 60%
moisture content of the logs). Low
moisture content, controlled fuel
porons and precise air seng means
high combuson eciency and very low
carbon oxides in the ue gases.
i
When purchasing pellets, ask
for conformity declaration and
certificate issued by an accredited
laboratory and make sure the
fuel meets the requirements
indicated in the manual. If you
purchase large amount of pellets
(bulk supply for the entire heating
season for example), ask your
supplier to provde accurate
and true information about the
storage conditions.
We recommend to use pellet with size of
6 - 8mm. Density 600 - 750kg/m3 heang
value 4.7 - 5.5 kWh/kg. Ash content – less
than 1% and moisture content up to 8%,
EN 14961-2:2011.
The opmal density of the pellets which
guarantees their quality is 605-700 kg per
cubic meter.
Pellet moisture content must not exceed
10%. Make sure you store your fuel in a
dry and well-venlated place.
The opmal pellet ash content is ≤ 1%.
This also provides for less frequent
cleaning intervals for the burner.
The table below contains the parameters
which we recommend that you take into
consideraon when choosing fuel for your
„Pell” burner.

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TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
Table2. European Certification of Wood Pellets for Heating Purposes
Parameters Units ENplus-A1 ENplus-A2 EN-B
Diameter mm 6 (± 1)
8 (± 1)
6 (± 1)
8 (± 1)
6 (± 1)
8 (± 1)
Lenght mm 15 ≤ L ≤ 40 1) 15 ≤ L ≤ 40 1) 15 ≤ L ≤ 40 1)
Bulk dentsity kg / m2≥ 600 ≥ 600 ≥ 600
Caloric/heang value MJ / kg ≥ 16,5-19 ≥ 16,3-19 ≥ 16,0-19
Humidity /moisture Ма .-% ≤ 10 ≤ 10 ≤ 10
Dust Ма .-% ≤ 1 3) ≤ 1 3) ≤ 1 3)
Mechanical durability Ма .-% ≥ 97,5 4) ≥ 97,5 4) ≥ 96,5 4)
Ash Ма .-% 2) ≤ 0,7 ≤ 1,5 ≤ 3,5
Melng point of ash °C ≥ 1200 ≥ 1100 -
Chlorine content Ма .-% 2) ≤ 0,02 ≤ 0,02 ≤ 0,03
Sulfur content Ма .-% 2) ≤ 0,03 ≤ 0,03 ≤ 0,04
Nitrogen content Ма .-% 2) ≤ 0,3 ≤ 0,3 ≤ 1,0
Copper content mg / kg 2) ≤ 10 ≤ 10 ≤ 10
Chromium content mg / kg 2) ≤ 10 ≤ 10 ≤ 10
Arsenic content mg / kg 2) ≤ 1,0 ≤ 1,0 ≤ 1,0
Cadmium content mg / kg 2) ≤ 0,5 ≤ 0,5 ≤ 0,5
Mercury content mg / kg 2) ≤ 0,1 ≤ 0,1 ≤ 0,1
Plumbum content mg / kg 2) ≤ 10 ≤ 10 ≤ 10
Nickel content mg / kg 2) ≤ 10 ≤ 10 ≤ 10
Zinc content mg / kg 2) ≤ 100 ≤ 100 ≤ 100
1) Not more than 1% of the pellets may be longer than 40 mm, max. Length 45 mm;
2) Dry weight;
3) Particles <3.15 Mm, particulate matter, before handing over the goods;
4) Measurements with lignotester limit value ≥ 97,7% by weight.
4. TRANSPORTATION OF THE BOILER
AND BURNRER
4.1. Transportation of the boiler
We recommend to transport the heang
boiler to the installaon site in its
packaging placed on the pallet. During
transport and installaon, depending on
the weight, suitable safety devices should
be used in accordance with Direcve
2006/42/EC.
When transporng items weighing more
than 30 kg, the use of pallet jack, fork
truck or other hoisng devices is a must.
The boiler is securely fastened with
fasteners to a wooden pallet.

Important: When installing the
boiler, the wooden pallet onto
which the boiler is placed must
be removed by unscrewing the
bolted connecons using at ring
wrench S13.

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TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
4.2. Transportation of the pellet and
auger.
It is mandatory for transportation to
place and secure the burner and auger
on a pallet.
- Dimensions of the packaging of the
burner: 450х350х750 mm;
- Dimensions of the packaging of the
auger: 260х120х1700 mm;
5. DELIVERY OF THE BOILER AND
BURNER
•Inspect the integrity of the packaging
upon delivery.
• Check whether all components have
been delivered to you.
1. Boiler scope of delivery includes:
1) Boiler body with boiler doors
2) Control unit
3) Safety valve 3 bar
4) Fire irons
5) Cleaning brush for ue pipes
6) Technical passport. Installaon and
operaon manual
7) Service booklet and Warranty card If
any of the above items are missing,
contact your supplier.
2. Burner consignment package includes:
1) Pellet Burner Pell with built-up Control
unit
2) Feeding chute
3) Fire irons
4) Auger
5) Technical passport. Installaon and
operaon manual
6) Service booklet and Warranty card
3. Fuel Hopper.
4. Mounng kit for parcular model
burner.
If you nd a missing component, contact
your provider.
6. INSTALLATION OF THE HEATING
BOILER

The assembly, installaon and
set-up of the boiler must be
performed by a technician
authorized for such operaons.
Installer must indicate to the user
of the installaon the minimum
clearances from ammable
materials and liquids.
6.1. Requirements:
- Boiler room must be frost-proof;
Table 3. Overall dimensions of model WBS boiler Acve
Model WBS
Acve A, mm B, mm C, mm D, mm
Weight,
kg
Diagram 3. Overall dimensions of boiler
and pallet, model WBS cve
20 kW 650 1050 125 1475 270
25 kW 650 1050 125 1475 285
30 kW 650 1050 125 1475 315
40 kW 750 1100 125 1475 360
50 kW 750 1100 125 1475 390
70 kW 810 1300 125 1620 470
90 kW 810 1300 125 1620 500
110 kW 880 1300 125 1620 530

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TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
- Boiler room must allow for connuous
access of air necessary to maintain
combuson;
- Boilers must not be placed in inhabitable
rooms;
- All boiler rooms must have correctly
calculated vent depending on the boiler
output. The vent must be protected by
means of a net or grate.
The size of the vent is calculated according
to the formula:
А = 6,02*Q - where:
А – area of the vent in cm,
Q – boiler output in kW
- Remove the packaging without pollung
the environment
- Observe building supervision
instrucons, in parcular the exisng
Ordinance on combuson devices and
storage of combuson materials, on
building requirements applicable to
installaon sites and on venlaon;
- The boiler must be placed on a
foundaon whose surface area is larger
than the base of the heang boiler
according to diagram 1;
- The boiler must be placed in a posion
which allows for the easiest possible
cleaning and servicing;
- Installaon must be carried out
according to installaon diagram 1
which shows the boiler housing;
- No objects made of ammable materials
or liquids may be placed on/near the
boiler;
6.2. Check door ghtness
Open boiler doors.
Place paper strips on the four sides of the
doors and close leaving part of the strips
protruding outside.
Pull the paper strips. If the strips tear
upon pulling, doors seal ghtly.

Cauon! Inadequate adjustment
of the hinges may result in air
being sucked in through the
doors and the boiler burning
uncontrollably.
7. SETUP OF THE HEATING BOILER AND
BURNER
7.1. Connecng the boiler to a chimney
Boiler-to-chimney connecon must
always comply with the exisng standards
and rules. The chimney must provide
sucient draught for evacuaon of the
smoke under any condions.
Diagram 4. Boiler size and chimney
parameters

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TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
The proper funconing of the chimney
requires adequate sizing of the chimney
itself since the draught it produces aects
combuson, boiler’s output and life span.
The draught created by the chimney
is in funconal relaon to its cross-
secon, height and the roughness of its
interior walls. No other appliance may
be connected to the chimney serving the
boiler. Chimney diameter must not be
smaller than the ue outlet of the boiler.
Flue outlet must be connected to the
chimney opening. In terms of mechanical
properes, the ue outlet must be sturdy
and properly sealed (to avoid gas leak)
and allow for easy access for cleaning
on the inside. The inner secon of the
ue outlet must not be greater than the
eecve secon of the chimney and must
not narrow. Avoid using elbow joints.
The chimney cleaning opening has to be
in its lowest part. The chimney’s wall has
to be threeplied where the medium layer
is from mineral wool. The thickness of the
insulaon is not less than 30 mm when
the chimney is seng up inside the house
and the thickness is 50 mm, when the
seng up is outside.
The inner diameter of the chimney
depends on its real height and the power
capacity of the boiler (see diagram 4).
Please entrust choosing a chimney and
its installaon by a qualied professional.
The required distance between the boiler
and the chimney is 300-600 mm.
i
Data in the tables are for
indicave purposes.
Draught depends on the
diameter, height, uneven secons
along the chimney surface and
dierences in temperature of
combuson products and outside
air. We recommend that you use
chimney ed with ue terminal.
Heang specialist must calculate
the precise sizing of the chimney.
7.2 Connecng the safety heat exchanger
Such connecon must be
performed by a technician /
service shop authorized for such
operaons.
The heang boiler is equipped with
safety heat exchanger (cooling circuit). It
connects to the water system through a
thermostac valve. In case of overheang,
the thermostac valve feeds in cold water
from the water mains which passes
through the heat exchanger and absorbs
the heat in the boiler. The water is then
discharged into the sewage system. This
arrangement ensures safe evacuaon
of the excess heat without the need for
addional energy. This guarantees that
the water in the boiler will not exceed the
maximum safe level of 95°C.
The minimum operang pressure of the
cooling water in the safety heat exchanger
must be within the range 2 ÷ 10 bar.
A ow rate of at least 12 l/min is required.
Connect the safety heat exchanger

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TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
according to the hydraulic diagram using thermostac valve. Install a lter on the inlet
before the thermostac valve.
Diagram 5. Connecng the safety heat exchanger
1. Water supply network
(pressure 6-10 bar)
2.Drainage (sewerage)
3. Boiler WBS Acve
4. Safety heat exchanger inlet
5. BVTS valve sensor
6. Safety heat exchanger outlet
7.3. Connecng the boiler to the heang
installaon.
Such connecon must be
performed by a technician /
service shop authorized for such
operaons.
When the boiler is connected to a heang
system, it is mandatory to install a 3 bar
relief valve and expansion vessel. No shut-
o ngs may be installed between the
relief valve, expansion vessel and boiler.

It is mandatory to install a three-
way valve (Laddomat or similar)
or a four-way mixing valve which
to ensure that the temperature
of the heang medium fed into
the boiler from the heang
installaon is at least 65°С.

14
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
Table 4.1 TROUBLE-SHOOTING TABLE - when burning solid fuel
Cause Soluon
Installaon damage
1. Due to unsealed connecons
1. Install the connecng piping strain-free to the boiler
connecons. Connect the heang installaon outlet to
connecon B. Connect the heang installaon inlet to
connecon A. Mount the cock Y included in the set.
2. Due to accumulaon of deposits.
Condensate and tar formaon may
reduce the performance and life of
the heang boiler. The temperature
at the boiler inlet must not be
less than 65°C, boiler water
temperature at the outlet must be
between 80°C and 85°C.
2. It is mandatory to install a three-way thermostac
valve which will prevent the temperature dropping
under 65°C at the inlet.
-In order to increase the operaonal life of the
boiler it is recommended to install a buer vessel with
capacity of 55 l per 1 kW of installed power.
3. Due to freezing
3. If the heang installaon, including the piping
network, has not been built frost-proof, we recommend
that you ll the heang installaon with a liquid which
has low freezing point and corrosion protecon and
anfreeze agent.
Output too low
1. Insucient draught 1. Check chimney condion and measure draught.
(must be performed by an authorized service)
2. Heang value of the fuel is too
low.
2. Make sure you use suciently dry fuel. When using
fuel with high moisture content, aer the reloading the
boiler may burn for some me at signicantly lower
output level unl the fuel in the combuson chamber
has dried.
3. Presence of soot deposits and/or
tar on the ue damper in the upper
chamber which prevent its ght
closure.
3. Clean the ue damper and make sure that when
moving its closing/opening lever it provides adequate
sealing of the ue gas outlet in the upper chamber.
(must be performed by an authorized service)
4. Presence of soot deposits and/or
tar in the ue pipes in water jacket
in the back of the boiler
4. Clean the heat exchange surface of the ue pipes
using the brush from the cleaning tools set. Aer the
cleaning is completed, remove any soot through the
inspecon opening in the back of the boiler. Must be
performed by an authorized service.
Boiler water too hot, heang bodies too cold
1. Hydraulic resistance is too high.
2. Air in the system
3. Inoperable circulaon pump
Make sure the circulaon pump has been properly
selected and the heang installaon is of the proper
dimensions. (You must contact your installer.)
Boiler temperature too high. Controller failure
1. Grid power uctuaons
2. Power failure
It is mandatory to assure a backup power generator of
corresponding rated power! (see 14.2)

15
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
Table 4.2 TROUBLE-SHOOTING TABLE - when burning wood-pellets
Cause Soluon
Installaon damage
1. Due to unsealed connecons
1. Install the connecng piping strain-free to the boiler
connecons. Connect the heang installaon outlet to
connecon B. Connect the heang installaon inlet to
connecon A. Mount the cock Y included in the set.
2. Due to accumulaon of deposits.
Condensate and tar formaon may
reduce the performance and life of
the heang boiler. The temperature
at the boiler inlet must not be
less than 65°C, boiler water
temperature at the outlet must be
between 80°C and 85°C.
2. It is mandatory to install a three-way thermostac
valve which will prevent the temperature dropping
under 65°C at the inlet.
-In order to increase the operaonal life of the
boiler it is recommended to install a buer vessel with
capacity of 55 l per 1 kW of installed power.
3. Due to freezing
3. If the heang installaon, including the piping
network, has not been built frost-proof, we recommend
that you ll the heang installaon with a liquid which
has low freezing point and corrosion protecon and
anfreeze agent.
Output too low
1. Insucient draught 1. Check chimney condion and measure draught.
(must be performed by an authorized service)
2. Heang value of the fuel is too
low.
2. Make sure you use suciently dry fuel. When using
fuel with high moisture content, aer the reloading the
boiler may burn for some me at signicantly lower
output level unl the fuel in the combuson chamber
has dried.
3. Presence of soot deposits and/or
tar on the ue damper in the upper
chamber which prevent its ght
closure.
3. Clean the ue damper and make sure that when
moving its closing/opening lever it provides adequate
sealing of the ue gas outlet in the upper chamber.
(must be performed by an authorized service)
4. Presence of soot deposits and/or
tar in the ue pipes in water jacket
in the back of the boiler
4. Clean the heat exchange surface of the ue pipes
using the brush from the cleaning tools set. Aer the
cleaning is completed, remove any soot through the
inspecon opening in the back of the boiler. Must be
performed by an authorized service.
Boiler water too hot, heang bodies too cold
1. Hydraulic resistance is too high.
2. Air in the system
3. Inoperable circulaon pump
Make sure the circulaon pump has been properly
selected and the heang installaon is of the proper
dimensions. (You must contact your installer.)
Boiler temperature too high. Controller failure
1. Grid power uctuaons
2. Power failure
It is mandatory to assure a backup power generator of
corresponding rated power! (see 14.2)

16
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
7.4. Connecon diagrams
Such connections must be performed by a technician / service shop authorized
for such operations.
Diagram 6. Connecon of BURNiT WBS Acve boiler to three-way valve

17
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
Diagram 7. Connecon of BURNiT WBS Acve boiler to P type buer tank and three-way valve

18
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
Diagram 8. Connecon of BURNiT WBS Acve boiler to combi tank KSC2,
at plate solar collector PK and three-way valve

19
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
Diagram 9. Connecon of BURNiT WBS Acve boiler to solar tank SON, buer thank P,
at plate solar collector PK and three-way valve

20
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
7.5. Pellet burner connecon to the fuel
hopper and pellet auger
Take the feeder chute exible hose (from
the auger set). Using a bracket, clamp
one end of the hose onto the motor-end
outlet of the pellet auger.
- Remember – pellet auger must be
installed at 45° angle to the ground
horizontal surface.
- Fill the hopper with fuel (see table 2 for
parameters of the fuel types used)
- Plug the power cord of the pellet auger
into the indicated Schuko-type burner
socket on the le side of the burner
housing.
1. WBS boiler; 4. Auger;
2. Pellet burner Pell; 5. Fuel hopper.
3. Auger flexible pipe;
Diagram 10. Mounng the pellet burner Pell
to WBS boiler
7.6. Connecng the pellet burner to the
mains power supply
Such connection must be
performed by a technician /
service shop authorized for such
operations.

Caution! ELECTRIC SHOCK
HAZARD!
-Before opening the unit: switch
o the voltage and secure the
unit against accidental restart.
-Observe installaon instrucons.
It is mandatory to assure a
backup power generator of
corresponding rated power! (see
12.4)
Improper cable connecons may
damage the regulator!
The device may be damaged if
struck by a lightning. Make sure
it is unplugged during the storms.
It is imperative that the
installation of the sensor to
control the temperature in the
boiler. View a scheme 5 point 6.
ATTENTION! STB - thermostat
(located on the front panel of the
boiler) to be bound to the burner
according to wiring diagram 12
The boiler must be connected to a
220V/50Hz mains using power plug (3
meters long, bound to the burner).
Create ght connecon with the electrical
mains which complies with the local
regulaons.