Per-Eko KSM 17 User manual

Operation and
maintenance manual
for the KSM series boilers with feeders

TABLE OF CONTENTS
1. INTRODUCTION.....................................3
1.1. Obligations of the user and guidelines concerning
safety.............................................3
1.2. Selection of correct power of the boiler . . . . . . . . . . . .3
2. TECHNICAL DESCRIPTION OFTHE KSM BOILERS . . . . . . . . . .4
2.1. Intended use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
2.2. Design description..............................4
2.3. Boiler design diagram...........................6
2.4. Operation and technical parameters ...............9
2.5. Fuel........................................ 10
2.6. Equipment.................................. 10
3. BEFORE START-UP................................. 10
3.1. Boiler room.................................. 10
3.2. Boilersetting................................ 11
3.3. Connection to chimney........................ 12
3.4. Connection of central heating and domestic hot water
system.......................................... 12
3.5. Connection of the boiler to electrical system . . . . . . 14
3.6. Filling the system with water................... 15
4. SERVICE MANUAL ................................. 16
4.1. Safe operating conditions...................... 16
4.2. Before rst ring up........................... 16
4.3. Firing up in the KSM series boilers............... 17
4.4. Approximate output parameters of the controller. . 18
4.5. Refuelling ................................... 18
4.6. Stop of boiler operation . . . . . . . . . . . . . . . . . . . . . . . 18
4.7. Cleaning and maintenance..................... 18
4.8. Emergency stop of boiler operation.............. 19
5. BOILER OPERATION DISTURBANCES
– BEFORE CALLINGTHE SERVICE........................ 19
6. WARRANTYTERMS AND CONDITIONS . . . . . . . . . . . . . . . . 20
Thank you for purchasing PEREKO heating boiler. This documen-
tation applies to the KSM series boilers with automatic fuel feeder.
The manual contains all necessary information and recommen-
dations concerning operation. Please carefully read this docu-
ment before start-up of the boiler. Observance of the guidelines
contained in the manual will ensure safety and prevent against
misuse of the equipment and its faulty operation.
Manual for the controller, which should be read and understood,
is enclosed in the set of documents for the boiler supported by
electronics. Documentation and manuals should be kept and
stored in a way allowing using them also during servicing of the
equipment.

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PageOperation and maintenance manual for the KSM series boilers with feeders. The producer reserves the right to introduce technical modifications.
1. INTRODUCTION
1.1. Obligations of the user and guidelines concerning safety
To assure operational safety and maintain optimum operation
of the equipment:
• read the manual of the boiler, controller, feeder and observe
their guidelines,
• the manual should be kept and stored in a safe place in the
boiler room allowing using it during any moment of boiler
operation,
• ensure that the drive is never operated by children or persons
who have not read the contents of the manual and adults
with disabilities preventing them from the safe operation,
• the system should be made in compliance with the applica-
ble regulations and in accordance with the rules and recom-
mendations contained in the manual,
• before setting and connecting the boiler check whether all
components are in good working order and whether the
boiler has a complete equipment for servicing and cleaning,
• the boiler should be cleaned on regular basis, at least once
per week, removing a layer of deposited soot and ash, which
reduces the eciency of the boiler,
• ensure continuous access to the equipment,
• avoid exceeding water temperature in boiler over 95°C,
• maintain operating pressure not exceeding 1.5 bar.
NOTE! Boiler installation in accordance with the applicable
standards and regulations and rst start-up should be car-
ried out by a qualied installer.
1.2. Selection of correct power of the boiler
Nominal power of purchased boiler (that is maximum thermal
eciency, which can be reached during continuous use and
maintaining the eciency declared by the producer) should be
selected in a way corresponding the real demand for thermal
energy even in case of occurrence of very low temperatures.
Do not purchase boiler with power higher than this planned
in the design. Selecting boiler with too high power will result in
higher fuel consumption and lack of full control over the com-
bustion process operation costs, while too small boiler will not
ensure sucient power necessary to heat up the building.
Approximate boiler power can be calculated using a power cal-
culator on our website www.pereko.pl Furthermore, you should
also consider: thickness of walls and insulation, the thermal
permeability of rst x joinery (including: tightness of windows
and doors, type of window panels used) and climatic zone,
where the heated building is located.

4Page Operation and maintenance manual for the KSM series boilers with feeders. The producer reserves the right to introduce technical modifications.
2. TECHNICAL DESCRIPTION OF THE KSM BOILERS
2.1. Intended use
Steel heating boilers KSM are intended for installation in the
central heating water systems in single-family houses, garag-
es, maintenance rooms etc. These boilers belong to a group of
low- temperature boilers and are not subject to registration in
the regional Oce ofTechnical Inspection. They are intended for
operation in water distribution piping of the gravity hot-water
systems or in open systems with forced circulation, which are
equipped with protections in compliance with the requirements
PN-91/B-02413 applying to the protections of the open water
heating system (considering the Regulation of the Minister of
Infrastructure, Journal of Laws of 2009 no. 56 item 461).
2.2. Design description
2.2.1. Water casing
KSM heating boilers are made of steel sheet P265GH intended
for production of the pressure equipment operating in the el-
evated temperatures. The thickness of metal sheet of the body
from ame side equals to 6 mm. Heat exchanger sheets are
welded from both sides and body sheets are reinforced with
supports. Location of convection ducts allows cleaning through
the upper cleaning hole. Ash and soot are removed through
the cleaning hole in the bottom part of the furnace chamber.
Design solution, that is the use of vertical ue gas return and
three-draught design of the furnace, allows ecient reception
of heat and high eciency.
2.2.2. Ash-pan doors (bottom)
Removal of ash formed during combustion process is possible
through the doors where the pellet burner is located.
2.2.3. Cleaning doors (upper)
Doors are intended for ring up a boiler, cleaning of the furnace
and upper part of the tubular heat exchanger.
2.2.4. Water jacket
The water jacket is a space lled with heating medium - water.
The structure is made of steel sheet P265GH for pressure equip-
ment intended for operation at elevated temperature.
2.2.5. Thermal insulation panels
Insulation panels xed on the surface of the water casing lim-
its heat losses to the environment. They are made of aesthetic
panels made of a zinc-plated metal sheet, painted with powder
paint ensuring high anti-corrosion protection. The modules are
lined with a mineral wool from the inside, which is used as an
insulation material.

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PageOperation and maintenance manual for the KSM series boilers with feeders. The producer reserves the right to introduce technical modifications.
2.2.6. Electronic controller
Microprocessor controller, installed in upper front part of the
boiler allows programming temperature of boiler operation
and programming changes of temperature of its operation at
any time.The controller is also equipped with operation control
sensor and sensor of emergency boiler shutdown after exceed-
ing water temperature 90°C. Detailed information you will nd
in the“User’s manual of microprocessor temperature controller”,
enclosed in the boiler documentation.
2.2.7. Set of feeder with burner
Feeder unit with the retort burner is driven by the motoreducer
and it is installed on the left or the right side of the boiler. Its task
is to take the fuel from the container and feed it automatical-
ly to burner part. The KSM boiler is equipped with a xed PSR
type retort feeder. Design of the unit allows quick assembling
and disassembling. Fuel container with tightly closed cover is
installed on the feeder unit. Detailed information is contained in
the Feeder user’s manual enclosed in the boiler documentation.
2.2.8. Water connections
Water connections are intended for connection of boiler to the
central heating system. Size of supply and return connection
- G 1 ½”internal thread.
2.2.9. Flue with a damper
Flue with rotary ue gas damper is an integral part of the boiler,
which discharges ue gas towards the chimney ue.
2.2.10. Flue gas swirlers
Flue gas swirlers are located inside the pipes to swirl ue gas
stream, what has an inuence on the increase of eciency and
the boiler power. The swirlers should be removed in case of
weak chimney draught.

6Page Operation and maintenance manual for the KSM series boilers with feeders. The producer reserves the right to introduce technical modifications.
2.3. Boiler design diagram
1. Water casing
2. Ash-pan doors
3. Cleaning doors
4. Water jacket
5. Thermal insulation panels
6. Electronic controller
7. Set of feeder with burner
8. Water connections
HH4
E
SS1
3
11
6
7
2
* boiler height does not include levelling legs.

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PageOperation and maintenance manual for the KSM series boilers with feeders. The producer reserves the right to introduce technical modifications.
9. Flue with a damper
10.Flue gas swirlers
11.Charging hopper
12.Ash-pan drawer
13.Ash-pan cleaning hole
14.Smoke tubes cleaning hole
H1 H3
H2
D
L2 LL1
7
8
9
11
8
* boiler height does not include levelling legs.

8Page Operation and maintenance manual for the KSM series boilers with feeders. The producer reserves the right to introduce technical modifications.
6
3
4
14
1
5
2
7
13 12
9
10

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PageOperation and maintenance manual for the KSM series boilers with feeders. The producer reserves the right to introduce technical modifications.
2.4. Operation and technical parameters
Parameter Unit Boiler model
17 22 34
Dimensions
D [mm] ∅ 159 ∅ 178
E [mm] 340 ×290 340 x 190
L1 [mm] 110
L2 [mm] 150
L [mm] 680 760 840
H [mm] 1200 1250 1530
H1 [mm] 900 960 1230
H2 [mm] 100 75 100
H3 [mm] 980 1035 1320
H4 [mm] 1275
S [mm] 490 590
S1 [mm] 640
Primary fuel — eco-pea coal
Thermal power range* [kW] 5.1 - 17 6 – 22 10.2 - 34
Area of heated rooms** [m2] do 309 do 400 do 618
Heated rooms volume [m3] do 772 do 1000 do 1545
Charging capacity of container [dm3] 200
Boiler water capacity [dm3] 72 85 128
Heat exchanger material — Steel P265GH [PN-EN 10028]
Maximum operating pressure [bar] 1.5
Required min. chimney draught*** [Pa] 20 25
Supply / Power [V/W] 230 / 175
Boiler weight without water [kg] 367 425 526
5 CLASS acc. to PN EN 303-5:2012 — yes
The boiler meets the ECODESIGN
requirements — yes
The boiler meets the requirements of
theREGULATION OFTHE MINISTEROF
DEVELOPMENT AND FINANCEof 1 August
2017 on the requirementsfor solid fuel
red boilers
— yes
Energy-eciency rating — B
Warranty —
10-year warranty for tightness of welds
6 years warranty for tightness of heat exchanger
2 years warranty for components
*maximum water temperature in the boiler – 95°C; **for rooms height 2.5 m and insulation with styrofoam 15 cm (q = 55W/m2); ***PN-EN 12809, PN-EN 303-5:2002;

10 Page Operation and maintenance manual for the KSM series boilers with feeders. The producer reserves the right to introduce technical modifications.
2.5. Fuel
Fuel used for combustion in the KSM boiler should have suf-
cient caloric value > 28 MJ/kg, be dry (moisture content
< 11%), have a size recommended by the producer 5-25 mm,
have correct ash content (maximum 2-7%) and have > 15%
of the volatile content. Use of moist or too large fuel can lead to
locking in the feeder and serious failure of the boiler.The unfa-
vourable chemical composition of the fuel can result in sintering
and formation of large amounts of dust and soot and increased
fuel consumption. Boiler burn time depends on many factors:
the caloric value of fuel, thermal insulation building, equip-
ment receiving the heat (heaters, boiler, oor heating). Burn
time period is longer by several hours during boiler operation
with lower thermal power..
PRIMARY FUEL
its use ensures that the boiler will achieve the declared heating power and eciency
KSM hard coal (eco-pea coal, class 28/50/06 with grain size 5-25 mm)
2.6. Equipment
Prior to the boiler setting you should check the presence of addi-
tional tools and operation of the instrumentation.The complete
set should include: automatic feeder,
fuel container, electronic controller, fan, brush, hook, ash shovel,
drain cock, fuel swirlers (one piece for each smoke tube).
3. BEFORE START-UP
3.1. Boiler room
• It should be a separate room with height not lower than
2.2 m in the newly constructed building (in the already ex-
isting buildings the allowable height equals to 1.9 m).
• It should have articial lighting installed and have natural
lighting as far as practicable.
• It should have gravity ventilation in good working order,
including:
1. air-supply duct in the external wall with cross-section
not lower than 50% of chimney cross-sectional area on
height maximum 1 m over the ooring or not lower than
200 cm2for boilers with power up to 25 kW or 400 cm2
for boilers over 25 kW,
2. separate air-exhaust duct on the internal wall with
cross-section not lower than 140×140 mm with an out-
let located under the boiler-room roof near the chimney.
NOTE! It is forbidden to use mechanical exhaust ventilation
in the room where the boiler was installe.
• Floor gully and oor with 1% slope towards the outlet
should be planned in the central part of the room.
• Flooring and walls in the whole room should be made of
non-combustible materials.
• The doors to the boiler room should open outwards.

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PageOperation and maintenance manual for the KSM series boilers with feeders. The producer reserves the right to introduce technical modifications.
3.2. Boiler setting
The boiler requires non-ammable ooring, in form of a foun-
dation, but it is allowed to place it on non-ammable wall base
with height not lower than 50 mm. Boiler should be placed
in a way ensuring free access to the equipment, allowing its
cleaning and maintenance. Therefore, while setting the boiler
it is recommended to maintain minimum distances from the
individual walls:
• distance from the front of the boiler to opposite boiler room
wall should not be smaller than 1 m,
• distance of boiler side from wall of the boiler room should
be lower than 1 m,
• the distance of rear part of the boiler from the wall of the
boiler room should be equal to at least length of the con-
nection, that is 0.5 m.
0.25 m 1 m
1 m
0.5 m

12 Page Operation and maintenance manual for the KSM series boilers with feeders. The producer reserves the right to introduce technical modifications.
3.3. Connection to chimney
1. It is necessary to prepare stand-alone, tight chimney ue,
which will be used for ue gas from the boiler.
2. The ue should be placed at least 1.5 m over the roof ridge
to avoid the occurrence of backdraught. The intersection of
the ue should be appropriately selected for the boiler pow-
er and height of the chimney. Approximate calculations of
chimney height and intersection can be carried out using
a chimney intersection calculator available on the website
www.pereko.pl Regardless of the results of the calculations
the minimum intersection of masonry chimney should not
be lower than 14 ×14 cm!The intersection of non-insulated
steel chimneys should be bigger by 20% and the chimneys
made from steel pipes should be about 15-20% higher than
brick chimneys.
3. Check condition of the chimney (preferably by a chimney
sweep) before connecting the boiler to the chimney and
check whether the chimney if free from connections of the
heating elements.
4. The boiler should be connected with chimney using a con-
nector. It is not recommended to use the connection at a
straight angle because it will cause a loss in the chimney
draught. Flue with chimney should be joined with a connec-
tor made of steel sheet of thickness 3 mm (to be purchased
from the boiler producer). We put it on the outlet from the
ue, x on the chimney and seal with high-temperature
silicone. The connector should be directed slightly up-
wards from 5° to 20°. If boiler ue will have a length over
400mm thenit isrecommendedto insulate itwith athermal
insulation.
NOTE! Boilers should be installed in compliance with the
applicable Regulation of the Minister of Infrastructure
(Journal of Laws of 2002 no. 75 item 690 and Journal of
Laws of 2009 no. 56 item 461.) In addition, it is recom-
mended to use chimney liner resistant to corrosion: chem-
ical, pitting, intercrystalline and surface.
3.4. Connection of central heating and domestic hot water system
3.4.1. Open water installations
KSMboiler isintendedforfeeding theopen waterinstallationsin
central heating systems with gravity or forced circulation water
of water. The system, where the boiler will be operated should
meet the requirements of the Polish Standard PN-91B-02413
Heating and district heating – Protection of open water heating
installations – Requirements.

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PageOperation and maintenance manual for the KSM series boilers with feeders. The producer reserves the right to introduce technical modifications.
Exemplary diagram of the open central heating system with four-way valve and hot water heater
Equalizing tank
Non-return ball valve
Non-return valve
Central heating pump
Pump
Heaters
Storage-type water heater for domestic hot water

14 Page Operation and maintenance manual for the KSM series boilers with feeders. The producer reserves the right to introduce technical modifications.
3.4.2. Closed water installations
PEREKO heating boilers red with solid fuels and with automatic
fuel charging with nominal power up to 300 kW can be used in
closed water heating systems provided that:
1. the system has been equipped with membrane expansion
vessel,
2. a device intended for removal of heat excess, that is
two-function cooling valve REGULUS DBV-1 was installed,
3. the safety valve 1.5 bar was installed.
NOTE! Correct selection of protections and suitable expan-
sion diaphragm vessel having inuence on safety level of
the system and the boiler.
The above equipment should be rigorously inspected min-
imum twice per year. The rst inspection should be carried
out during seasonal start-up of the boiler with the water
distribution system.
3.4.3. Four-way valve
Design of the heating system should take into account protec-
tion of the boiler against the return of too cold water from the
system. It is recommended to use four-way mixing valve what
allows the increasing temperature of water returning to the
boiler.
Four-way valve mixes hot water from the supply with cooler
water returning from the heating cycle and therefore:
• protects the boiler against low-temperature corrosion and
premature wear,
• improves the eciency of heating of tap water in the DHW
storage tank,
• allows smooth adjustment of the temperature of the heating
water with respect to the needs of the heating system,
• improves the eciency of operation of the whole system.
Designing of the correct diagram of the system for the house
and its execution should be entrusted to a person with appro-
priate qualications. Central heating systems may dier and
therefore it is necessary to stick to the guidelines included in the
central heating design.
3.5. Connection of the boiler to electrical system
Boiler room should be equipped with electrical system with
rated voltage 230/50 Hz in compliance with the applicable reg-
ulations. The system should be terminated with plug-in socket
equipped with protective conductor contact with connected
protective conductor terminal PE to protect against electric
shock.

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PageOperation and maintenance manual for the KSM series boilers with feeders. The producer reserves the right to introduce technical modifications.
3.6. Filling the system with water
3.6.1. Filling the boiler with water
before rst start-up
1. Flush heating system and boiler before lling it with water to
remove all contaminations.
2. Fill the system with water through the drain cock using the
exible hose. Water intended for feeding the heating boil-
er should meet the requirements of the PN-93/C-04607
standard. Quality of water lling the central heating system
inuences its durability therefore this water should be free
from the contaminations, oil and aggressive chemical sub-
stances.Water hardness should not exceed 2-4 (mval/l).Too
hard water causes deposition of sediment in the boiler and
heating system what decreases eciency and may damage
the boiler.
3. Stop feeding of water when the system is full that is water
will start owing out from the signalling pipe of the ex-
pansion vessel located in the highest point of the system
or when the pressure gauge indicates 5 bar. Relling should
take several seconds to make sure that the water ows down
from the vessel.
4. Close boiler drain cock and disconnect exible hose from the
equipment when the system is lled.
3.6.2. Relling the system with water
Heating system with open container allows direct contact of
heating water with the air what results in evaporation and ne-
cessity to rell it.
NOTE! It is forbidden to add cold water to hot system. Add-
ing water to hot components of the boiler may damage it
and is synonymous with loss of the warranty..
The system can be relled with water only when the boiler is
cold. Firing up should be restarted after lling the system.
3.6.3. Draining water from the system
It is not recommended to drain the water from the system after
the heating season because it increases the risk of occurrence
of the corrosion and formation of boiler scale. The exception
is a time needed to carry out necessary repair and long-term
standstills of the boiler during strong frosts. In the latter case it is
recommended to drain water from the system (to avoid freezing
and therefore damaging to the system) and relling it with wa-
ter when the frost is over.

16 Page Operation and maintenance manual for the KSM series boilers with feeders. The producer reserves the right to introduce technical modifications.
4. SERVICE MANUAL
4.1. Safe operating conditions
To maintain safe operating conditions for the boiler you should:
• Execute heating system correctly in compliance with the
requirements of the standards: PN 91/B-02413, applying to
the protection of open water heating installations, consider-
ingthe Regulationof theMinister ofInfrastructure,Journalof
Laws of 2009, no. 56, item 461.
• Fill the system with water correctly. Do not rell the system
with cold water during operation of the hot boiler.
• It is forbidden to operate the boiler if the water level in the
system is below the level indicated in the central heating
system user manual.
• Never use ammable liquids, e.g. petrol, for ring up.
• Do not extinguish the re in the furnace by pouring it with
water.
• Use suitable equipment and protective clothing (gloves,
goggles, head protection, shoes) during work with the boiler
and take special care during servicing of non-insulated com-
ponents (e.g. doors), which may heat up to high tempera-
tures resulting in risk of burn injuries.
• Do not stay on the side of the boiler during the opening of
the doors and pay attention to ames.
• Take care of cleanness in the boiler room, ensure proper
ventilation and remove corrosive and ammable materials
located nearby.
• The boiler should be cleaned only when it does not work.
• Use mobile lamps supplied with a voltage lower than 24V
during works connected with servicing of the boiler.
• Take care of the good condition of the boiler and hydraulic
system.
• Take care of boiler cleanness.
4.2. Before rst ring up
Before the rst start-up, please check:
1. The correctness of installation and connection to electrical
system:
a. the actuator of the four-way valve (if any),
b. central heating pump, domestic hot water pump, oor
and circulation pump (if any),
c. the sensor in boiler and DHW cylinder,
d. fan,
e. feeder and charging hopper,
f. heating system:
• itstightness,whether there areno leaksof water from
the boiler or system, whether the water is not frozen
in the conductors and expansion vessel;
• whether water level and its pressure are correct and
sucient (pressure gauge depending on the height
of the building should indicate from 0.8 to 1.5 bar).
If the pressure is too low you should add water by
pouring it into the cold boiler;
g. cleaning hole, which should be tight,
h. the correctness of boiler connection to the chimney,
i. carry out measurements of chimney draught.

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PageOperation and maintenance manual for the KSM series boilers with feeders. The producer reserves the right to introduce technical modifications.
4.3. Firing up in the KSM series boilers
1. Fill the fuel container with eco-pea (hard) coal of sucient
quality.
2. The close tightly ap of the container (hopper).
3. Open cleaning doors.
4. Activate controller (see Controller User’s Manual) and switch
to manual operating mode.
5. Check operation of the individual equipment:
a. fan operation,
b. activation of the central heating pump, domestic hot wa-
ter pump, oor pump and circulation pump,
c. feeder and charging hopper.
6. Turn othe fan. In manual mode the feeder starts feeding
the fuel for approx. 2-3 min.Wait until eco-pea coal appears
in the retort to the height of air injection holes.
7. Place re-starter or paper on protruded fuel feeder. Place
pieces of small wood on it and re it up. After ring up the
chimney draught should suck ue gas to the convection
ducts of the boiler.
8. The user should switch controller to automatic operation
mode when the stable ame is obtained what will initiate
operation of fuel feeder and the fan. Whole combustion
process will be controlled by the controller when the boiler
is red up (see User’s Manual for Controller) and from this
moment the boiler will operate automatically.
9. Set required parameters: boiler operation time (factory set
to 57°C), feeding time, break in fuel feeding and blowing
speed) after 30 minutes in accordance with specied values
given in the user’s manual for controller and feeder.
NOTE!The temperature on the boiler should not be set be-
low 57°C! It increases a risk of occurrence of a “dew point”
what considerably accelerates low-temperature corrosion
in the heat exchanger. Maintaining a temperature of feed-
ing water below 57°C with simultaneous use of incorrect
solid fuels leads to accelerated wear and tear of the boiler
and decreases its eciency.
The above parameters may require individual adjustment
depending on many factors that are amount of coal, external
temperature, heat reception.
When water is boiler reaches a temperature set in the con-
troller the boiler switches to maintaining mode - fuel feeder and
fan will be activated in cycles (acc. to user-specied settings).
The controller will activate feeder and fan and will maintain
their operation until the correct temperature is reached when
the temperature in the boiler falls below the set value. Adjust
breaks between successive fuel charges and operation time for
the fan to ensure that heat on the burner will be maintained and
it will not go out. The fuel combusts in the central part of the
burner, the heat does not move towards the feeder and unburnt
coal does not fall to ash-pan when breaks are correctly set.
The device saves previously set parameters when the con-
troller is switched o.
Parameters can change after 8 hours depending on the qual-
ity of the fuel. Therefore, they should be reset by changing only
the single parameter at the once e.g. feeding time remains con-
stant and we change only break in fuel feeding.To assess it user
should take a look inside the boiler and check whether the heat
is equal to a plate or a “mole mound”is formed. It is necessary
to increase break in fuel feeding if the mound is too big and it
falls to the side.
Controller protects the boiler against overheating and
switches othe whole system if the fuel is missing or in case of
heat pullback to the container.

18 Page Operation and maintenance manual for the KSM series boilers with feeders. The producer reserves the right to introduce technical modifications.
4.4. Approximate output parameters of the controller
The controller is pre-congured, but its output parameters are
changed, depending on fuel used (caloric value) and may re-
quire individual adjustment.They should be adjusted depending
on heat demand, type and quality (caloric value)
of pellet or depending on the development of the heating sys-
tem. Selecting correct parameters ensures economical combus-
tion of fuel.
Feeding time Break in feeding Fan power
KSM 22 6 s 20 – 30 s 40 – 50%
4.5. Refuelling
The container should be refuelled regularly to maintain contin-
uous operation of the boiler. Fuel should be added when the
coal layer in the container reaches height min. 30 cm from the
bottom of the container - at the latest. Smoke and dust can be
emitted from the container if there is too small amount of coal. If
there is no fuel the controller will shutdown whole system and it
will be necessary to reignite the boiler.To refuel:
1. Turn othe fan.
2. The open ap of the fuel container.
3. Add fuel to the container.
4. Make sure that there are no contaminants, which can lock
operation of the feeder (debris, rocks, parts of wood metal).
5. The close tightly ap of the container.
6. Switch on the fan.
NOTE! During operation of the boiler fuel container should
be always tightly closed!
4.6. Stop of boiler operation
1. Switch to manual mode.
2. Turn othe fan and feeder.
3. Switch on the fuel feeder in manual mode for several min-
utes, taking a considerable amount of fuel out, to remove
whole heat from the burner.
4. Switch othe controller.
5. Close tightly all doors, aps, damper on ue to damp the
system.
6. After dozen or so minutes check whether the fuel has not
reignited.
7. Remove residues of coal and ash from the boiler if the heat is
completely extinguished.
8. Remove remaining fuel from the container and feeder.
4.7. Cleaning and maintenance
Maintaining cleanness of the boiler is a necessary condition
for its eective, trouble-free operation. An Even small layer of
deposit will cause a decrease of heat transfer from ue gas and
reduces boiler eciency as a result. The accumulated deposit
can be also a reason for boiler damage.
Therefore, the boiler should be regularly precisely cleaned at
least once a week. Remove soot from the combustion chamber
and vertical smoke tubes using wire brush after extinguishing
andcoolingdown of the boiler. Removesoot throughside clean-
ing holes once a month.

19
PageOperation and maintenance manual for the KSM series boilers with feeders. The producer reserves the right to introduce technical modifications.
4.8. Emergency stop of boiler operation
The boiler should be stopped always in case of:
1. water leakage from the boiler,
2. temperature increase over 90°C or
3. the necessity to rell evaporated water in the system and
heaters.
To stop operation of the boiler you should carry out operations
listed in point Stop of boiler operation. If it is necessary to stop
the boiler operation more quickly you should take out heat from
burner using a metal shovel and place it in a metal container,
remove heat from the boiler-room and extinguish it with water
there.
5. BOILER OPERATION DISTURBANCES
–BEFORE CALLING THE SERVICE
The customer will bear the costs of travel and work of the sere technician in case of the unjustied calling of producer’s service.There-
fore, before you call the producer’s service please read the section concerning the most often occurring disturbances in boiler operation
and methods of dealing with them.
Symptom Cause Repair
Smoking outwards
insucient chimney draught remove leaks in chimney, ue or boiler doors
insucient chimney height lift chimney to height min. 1.5 m over roof ridge
too small chimney’s intersection adjust damper of the ue, decrease blowing force
very low atmospheric pressure use fan supporting chimney draught
contamination of chimney ue clean ducts
Low thermal eciency of
the boiler
combustion of low heat fuel replace fuel with high heat fuel
no supply of air to the boiler-room facilitate correct air supply through the window or
air supply duct
failure of forced draught fan or controller re-set parameters in compliance with the user’s
manual or replace with a new one
contamination of gas passes in smoke tubes chamber clean passes, adjust the damper
Moistening and tar deposits
inside the boiler
(symptoms similar to leak)
low temperature maintained in the boiler use boiler in temp. min. 57°C
Leak to be assessed by the producer repair by PEREKO service
Too high chimney’s draught — adjust chimney draught with a damper in boiler ue
Fuel suspends in the
container Too moist fuel Remove fuel from the container and dry it

20 Page Operation and maintenance manual for the KSM series boilers with feeders. The producer reserves the right to introduce technical modifications.
Symptom Cause Repair
Screw-conveyor feeder
does not start
no supply check supply
controller switched ocheck the main switch of the controller
Smoking from container
incorrect setting of fuel feeding time set correctly the time for fuel feeding on the controller
moist fuel check and dry the fuel
Too high fuel consumption
incorrect setting of parameters the assistance of the producer’s service
bad quality of fuel replace fuel
Fuel does not burn
completely
too short time between fuel feeding set the correct interval between successive fuel
feeding
bad quality of fuel replace fuel
6. WARRANTY TERMS AND CONDITIONS
1. Envo sp. z o.o. with registered oce in Starachowice ul. Ra-
domska 76 is a producer of PEREKO boilers.
2. The warranty card is invalid without a date, stamp and sig-
natures of the producer, retail outlet and the seller.
3. Copies shall not be issued if the warranty card is lost.
4. The warranty card or purchase invoice is the only documents
authorising the purchaser for free warranty repair.
5. The producer provides a warranty for the operation of
the heat exchanger for 72 months and 24 months for the
components.
6. The producer provides a warranty for tightness of welding
connections for 10 years from the production date.
7. Warranty for tightness of welding joints is not synonymous
with warranty for tightness of the whole boiler and is appli-
cable in case of leaks only on welding joints.
8. The producer reserves the right to make improvements or
modications without prior notice.
9. The warranty is prolonged by a period from the date of the no-
tice of boiler repair to the date of its execution. Execution of the
repair is conrmed in the warranty card and report from visit
intended for removal of fault.
10. The producer will consider the claim within 14 days from the
date of the notice.
11. During the warranty period the boiler can be replaced with a
new one if the Producer (based on the decision of the author-
ized expert) decides it cannot be repaired.
12. Quality claims concerning the boiler should be made in sales
location or directly to the producer.
13. Thewarrantydoesnotcoverboiler connection,clampinggrips,
heat doors, sealing cord located in the external doors and tools
for servicing and cleaning, ceramic plates and swirlers.
14.Warranty for electronic temperature controller (regulator),
fan and automatic coal feeding system is provided by their
producer and it is enclosed to set of boiler documents.