Termal Kamin 20 User manual

SERVICE MANUAL
SERVICE OF dZD> PELLET BOILERS AND STOVES

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CONTENT
1 INTRODUCTION ........................................................................................................................................................................ 3
2 ELECTROMECHANICAL PARTS ................................................................................................................................................... 4
2.1 Sensors – senses ............................................................................................................................................................. 4
2.1.1 TC themperature sensor ........................................................................................................................................ 4
2.1.2 NTC themperature sensor ..................................................................................................................................... 4
2.1.3 Pressure switch ..................................................................................................................................................... 5
2.1.4 Inductive position sensor ...................................................................................................................................... 6
2.1.5 Microswitch ........................................................................................................................................................... 6
2.1.6 Thermostat ............................................................................................................................................................ 7
2.2 Actuators - executive devices ......................................................................................................................................... 8
2.2.1 Heater.................................................................................................................................................................... 8
2.2.2 Fans ....................................................................................................................................................................... 8
2.2.3 Dispenser-auger assembly..................................................................................................................................... 9
2.2.4 Water pump ........................................................................................................................................................ 10
3 ELECTRIC CONNECTION SCHEMES .......................................................................................................................................... 10
4 PROGRAMMING BOILERS WITH A MANUAL UNIT .................................................................................................................. 21
5 SERVICE SETTINGS .................................................................................................................................................................. 23
5.1 Access to the service menu ........................................................................................................................................... 23
5.2 Setting operating parameters ....................................................................................................................................... 25
5.3 Other settings in the service menu ............................................................................................................................... 26
6 First ignition of the boiler ....................................................................................................................................................... 27
7 A sample of factory-PERFORMANCE PARAMETERS ................................................................................................................ 30
7.1 KAMIN STANDARD 10 kW ............................................................................................................................................. 30
7.2 EDGE / COMFY 10 kW ................................................................................................................................................... 35
7.3 KAMIN / EXCLUSIVE / EDGE 15 kW ............................................................................................................................... 40
7.4 KAMIN / EXLUSIVE 20 kW ............................................................................................................................................. 45
7.5 KOTAO EDGE 23 kW ...................................................................................................................................................... 50
7.6 KAMIN / COMPACT 25 kW ............................................................................................................................................ 55
7.7 SMART 25kW ................................................................................................................................................................ 60
7.8 SMART 33 kW................................................................................................................................................................ 65
7.9 COMPACT 33 kW ........................................................................................................................................................... 70
7.10 COMBO 35 kW .............................................................................................................................................................. 75
7.11 SM ECO 35 kW .............................................................................................................................................................. 80
7.12 SM ECO 50 kW .............................................................................................................................................................. 85
7.13 SM ECO 70 kW .............................................................................................................................................................. 90
7.14 SM ECO 100 kW ............................................................................................................................................................ 95

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1 INTRODUCTION
The document presented before you is a manual for the product service (stoves and boilers) of
dĞƌŵĂů ŝŶƚ d.o.o. In this connection, the document contains brief descriptions of individual product
lines, working principles and basic components of the automatic regulation of the pellet combustion
process. Products with the purpose of heating bio-fuels (pellets) can be divided into two basic groups:
1.Stoves
2. Boilers
Stoves are intended for warming the living space, but with their design they are intended also for
installation in the mentioned space. According to the way the space is heated, or according to the
method of heat transfer, obtained by combustion of pellets, the fireplaces can be divided into two
subgroups:
1. Dry stoves (SIMPLE and STANDARD series) the surrounding area is heated only by warm air.
2. Hydro stoves (KAMIN i EXLUSIVE series) the surrounding area is heated by means of a central
heating system, and a smaller part of the heat is emitted into the space in the form of heat
radiation.
On the other hand, boilers are only intended for connection to the central heating system. The heat
produced by combustion of pellets transmits only to the fluid of the heating system, are well insulated so
as not to heat the heat in the surrounding area. They are installed in separate rooms (boiler rooms).
According to the power or capacity of heating a certain volume of space, they are divided into two basic
groups:
1. Boilers with power till 100 kW are intended for heating of residential and business premises up
to about 900m2 and average ceiling height about 2.5m.
2. Industrial boilers with power over 100 kW, intended for the heating of industrial halls, plants or
for other purposes connected for other purpose as liquid water heaters (water or antifreeze).
Boilers whose pellet fuel is automated ie. The pellet burning process is controlled by a microcontroller
built into the boiler control unit. dĞƌŵĂů install the control units of the manufacturer Atech - Fumis, the
so-called Alpha (40, 65, 75) depending on the characteristics of the boiler.
Managed by this manual are people who are primarily mentally and physically capable of
performing service, have prior knowledge or work experience in the field of servicing and are
authorized by dĞƌŵĂů ŝŶƚ. The service provider should have a developed ability to observe the details
in order to prevent the occurrence of an error while handling this instruction.

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2 ELECTROMECHANICAL PARTS
In order for the control unit to manage the pellet combustion process, it has to have properly set up and
functional components that can be divided into two basic groups:
2.1 Sensors – senses
2.1.1 TC themperature sensor
The sensor is intended for reading the temperature of the exhaust gases. The end of the sensor with the
metal shield is placed in the required position on the exhaust fan housing as in the picture above. In the
event that the fan is mounted on an adequate flange (in some versions of the boilers), the sensor is
placed in the provided hole on the flange, it is necessary to ensure sealing between the sensor and the
flange with a high temperature resistant silicone.
2.1.2 NTC themperature sensor
NTC is a negative temperature coefficient resistor which is used to measure the temperature of the
liquid in the boiler. It is inserted into copper tubes in the form of a tube in such a way that the end of the

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sensor in the form of a cylindrical thickening is placed at the bottom of the tube only so that it makes
contact with the copper surface. Attention should be paid when mounting the boiler liner so that the
sensor does not move from the original position. It is recommended that when the sensor is placed in
the capsule, it is closed with a small piece of glass wool or other sealed material that is temperature
resistant in order to prevent the movement of the sensor during the installation of the coating in order
to obtain the accurate information about the temperature of the liquid.
In the case of the SIMPLE and STANDARD fireplaces, this sensor is used to measure the temperature of
the environment that is heated. In the case of a product with anti-condenser pump (from 50kW to more)
beside the water temperature in the boiler, this type of sensor is used to measure the water
temperature in the return line from the switch to the boiler.
2.1.3 Pressure switch
The pressure control is a safety pressure switch. It performs the function of protecting the device (boiler
/ stove) or people and objects that are in the immediate vicinity of the possibility of producing a fire due
inadequate draft created in the combustion chamber. Substance is created when the air or flue gases are
drawn through the flue pipe. The factory preset is set to activate contacts at a pressure of (Poff = 40 Pa;
Mon = 60 Pa). It is connected with a silicon hose to the intended terminal located on the exhaust fan
housing.
The error that can occur with this system on the boiler (the boiler does not go into a stable operating
mode) is the silicon cord closing due to inadequate smoke, mechanical damage to silicon lines or the
failure of the pressure switch itself.

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2.1.4 Inductive position sensor
An inductive position sensor is a contactless sensor that has the ability to detect metal near the sensing
head (about 2mm / max 4mm in front of the head surface). It is only installed in smart boilers and is an
integral part of the mechanism of the mechanism with "self-cleaning burners". With it, the control unit
counts how many times the burner executed the cycle of discharging the burner (factory 3 times) for one
cleaning.
2.1.5 Microswitch
Microswitches is a contact sensor for the positioning of the cleaning mechanism for smart boilers on the
older generation pellet. When the discharge cycles of the burner end the microswitch, it must detect
that the burner is closed and ready to accept the initial dose of pellet for ignition.
An error that can occur with this boiler system (boilers do not ignite) is the incomplete closing of the
burner where the foreign body (ash, resin or pellet sticker) prevents proper closing, ie, the microswitch
will not detect that the burner is closed and ready to operate.

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2.1.6 Thermostat
The thermostat is a safety switch for the temperature of the liquid in the boiler. It performs the function
of protecting the device (boiler / fireplace), the central heating system or people and objects that are
located close to the boiler and heating installation due to overheating and the formation of a fire when
the boiler temperature is exceeded. The factory thermostat is set to activate contacts at the maximum
operating temperature of the device (fireplace / boiler) of 105oC. The probe thermostat is inserted
together with the NTC temperature sensor in the copper coil located in the boiler body. The built-in
thermostat has a bistable characteristic, ie. once the thermostat is activated due to temperature
overrun, it remains active even when the temperature of the device falls. In this regard, when the cause
of overheating of the boiler is eliminated, the thermostat must be manually reset by pressing the small
pin located below the black protective cap most often on the back of the boiler.
xAirflow sensor so-called "delta"
The air flow sensor bases its work on measuring the pressure difference in front and behind the
diaphragm on the suction line of the boiler. The sensor itself is located directly on the control unit and is
connected with the diaphragm using two silicone hoses for Pa + and Pa-. Based on the obtained
measurement results, the control unit optimizes the combustion process in a way that controls the
speed of the suction and exhaust fans.
Pa+ Pa-

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2.2 Actuators - executive devices
2.2.1 Heater
The heater is a device by which the incineration of the pellet or the first pellet dose in the burner is
carried out. In all stoves and boilers, in addition to some industrial ones, identical 250W heaters are
installed. They work at 230V AC. They are installed in the foreseen tube for which the end is in the
bottom of the burner.
2.2.2 Fans
Fans are electric motors designed for supplying fresh air and extracting exhaust gases in the combustion
process. The fans control the control unit by defining the fan speed of the output voltage on its windings.
They are installed in flanges (the most common case) or as standalone air vents if the fan is designed
with the housing. The second type of fan is a tangential fan that is installed only in the dry stoves of the
series SIMPLE / STANDARD.

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They have the function of removing heat from the warm surfaces of the stove and using the directional
air to pass it over to the room. Its work can define a control unit in a way that automatically increases
the speed of rotation in relation to the achieved temperature of the stove or that the user sets the fixed
speed of rotation.
The service technician must pay attention and check that the ventilation direction of the fan, after
installation and connection, is correct!
2.2.3 Dispenser-auger assembly
The dispenser assembly is characterized by the step of the spiral of the dispenser and the engine rpm
speed (rounds per minute speed). Its function is transporting pellets from the tank to the burner where
the combustion will take place. The amount of dosage pellet depends on the working time of the
dispenser engine which is spiraled. The required quantity of pellets that is inserted into the burner is
determined by the time of operation of the dispenser engine, i.e. it is in function from time (the control
unit is operated during the operation of the engine of the dispenser) and therefore it must be ensured
that the spiral and the dosing motor are compatible with the current parameters of the boiler
operating mode.
For larger boilers, when a larger amount of pellets are required to burn, two dozen spiral circuits and two
motors are produced. The servicer should pay attention to the type and speed of the engine, and
adjust the boiler operating parameters accordingly!

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2.2.4 Water pump
The pump is a device that enables or initiates the flow of liquids through the central heating system. In
the KAMIN series and boilers up to 25kW, the factory is built into the boilers together with the expansion
vessel and the safety valve. For other boilers it is necessary to install the pump and the expansion vessel
at a later stage. The pump also controls the control unit and in most cases (other than industrial boilers)
directly connects to the same. The pump is 93W and 230V 50Hz.
Some boilers of 50 kW and more have a built-in anti-condenser pump that allows circulation or mixing of
water in the boiler itself. It also controls by control unit and is directly connected to it. When installing
the pump, the service technician should pay attention to the direction of flow of the liquid, ie, to achieve
fluid flow from the switch to the bottom of the boiler.
3 ELECTRIC CONNECTION SCHEMES
The electrical connection diagrams of the device to the control unit differ in the basic series of boiler-
stoves. The connection principle is similar but the differences come with the expansion of the control
unit's system for connecting multiple devices. If we look at the statement markings on the control unit,
we will see the following:
1. T0X tags - indicate terminals for connecting a sensors (TC, NTC);
2. I0X tags - means terminals for connecting protective switching devices (STB, PSW);
3. O0X tags - indicate terminals for connecting output devices (gear motors, Heater);
Errors made during connection of the device by failure to comply with these markings can lead to
permanent damage to a particular item or in the case of a control unit.
Connection schemes for individual series of boilers / stoves will be shown in further text.

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Important note:
In the middle of 2021, an improved version of the ALPHA75_V2 controller was implemented.
The mentioned controller changes the previously used ones (Alpha65 and Alpha75). The following has
been replaced:
1. The fuse is no longer on the electronics but on the Euro socket where the power cord is plugged
2. Switching points of the heating pump and anti-condensation pump in all boilers according to the figure
below:

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The boiler on which the controller has been changed can be checked by looking at the
declaration from the boiler and at end of the serial number it will say -V2
Example in the picture below:
How to recognize the Upgrade Controller:

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SIMPLE/STANDARD:

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xKAMIN/COMPACT/SM_ECO 35 kW:

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xSM ECO 50 – 70 kW ,with only one fan (smoke extraction):

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xSM ECO 50 – 70 kW , with two fans primar air and smoke extraction):

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xSM ECO 50 – 70 kW with dosing auger overheat protection:

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xSM ECO 100kW and higher:

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