Atmos D15PX User manual

Operation manual - EN
www.atmos.cz
Operation
manual

www.atmos.cz
Operation manual - EN

Operation manual - EN
EN
www.atmos.cz EN - 3
Contents
1. Application 5
2. Technical description 5
Layout of the instrument panel 6
3. Technical specifications 7
Captions for the diagrams of the boilers 8
Technical specifications 8
Diagrams of the boilers 9
Sections of the D15PX and D20PX boilers 9
Exhaust fan schematics 9
4. Fuel 10
5. Accessories delivered with the boiler 10
6. Boiler foundations 10
7. Type of environment and location of the boiler with the burner in the boiler room 11
8. Chimney 11
9. Flue gas duct of the boiler 12
10. Fire protection within the installation and use of heat appliances 12
11. Connection of boilers to the electric mains 13
12. Electric wiring diagram for the D15PX and D20PX boiler with an extraction fan - model AC07X
with a 6-pin connector 15
13. Electric diagram of the ATMOS A25 burner - for boilers D15PX and D20PX - AC07X model (R, R2,
sensors TV, TS, TK, TSV) with additional module AC07X-C - (R5, R6) - basic version 16
14. Electric diagram of the ATMOS A25 burner - for boilers D15PX and D20PX - AC07X model (R, R2,
sensors TV, TS, TK, TSV) with additional module AC07X-C - (R5, R6) - R5 and R6 used for sending
of information about burner or for switching of external boiler when puting pellet boiler out of operation
(failure) 17
15.ObligatoryČSNENstandardsforthedesignandinstallationofboilers 18
16. Selection and method of connection of control and heating-system elements 18
17. Protection of the boiler from corrosion 19
18. D15PX, D20PX boiler connection with buffer tank to control the burner by TV and TS sensors and boiler
pump control from the burner by boiler temperature (sensor TK) 20
19. D15PX, D20PX boiler connection with buffer tank and regulation ACD01 20
20. Laddomat 22 21
21. Thermoregulatory valve 21
22. Operation instructions 22
Preparation of boilers for the operation 22
Relation of waste gas temperature to boiler (burner) output when burning pellets 23
23. Procedure for optimal adjustment of the boiler for wood pellets 23
24. Placing the shaped pieces into the combustion chamber 25
25. A25 burner connection for the D15PX and D20PX boilers 26
26. D15PX and D20PX boilers in space of boiler room 26
27. Boiler room with the DxxPX boiler and a large built-in pellet storage with multipoint sucking of pellets
with pneumatic feeder ATMOS APS 250 SPX 27
28. Refuelling 28
29. Cleaning of the boilers and ash removal 28
30. Maintenance of the heating system, including boilers 31
31. Operation and supervision 31
32. Possible failuress and troublesshooting 32
33. Spare parts 33
Replacing the door sealing cord 33
Adjusting the door hinges and closures 34
34. Environment protection 34
Disposal of the boiler after the end of its service life 34
GUARANTEECONDITIONS 35
RECORDOFINSTALLATIONOFTHEBOILERANDBURNER 36
ANNUALINSPECTIONSRECORDS 37
RECORDSOFGUARANTEEPERIODANDPOST-GUARANTEEPERIODREPAIRS 38

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Operation manual - EN
HOPINGYOUWILLBESATISFIEDWITHOURPRO-
DUCTWERECOMMENDYOUTOOBSERVETHESE
MAINPRINCIPLES,IMPORTANTFORTHESERVICE
LIFEANDPROPERFUNCTIONINGOFTHEBOILER
1. The installation, lighting of the test fire and training of the operators shall be performed by an
installation company trained by the manufacturer, which shall also fill in the boiler installation
record (page 36).
2. When using pellets for heating only use high-quality fuel with the diameter of 6 - 8 mm, made
of soft wood without bark and contaminants (white pellets).
3. During fuel combustion substances are produced that may damage the boiler body. Therefore,
the boiler must be equipped with Laddomat 22 or a thermo-regulation valve to maintain the
minimum temperature of return water to the boiler of 65 °C.
The operation temperature of the water in the boiler must be in the range of 80 - 90 °C.
4. Each circulation pump in the system must be controlled by a thermostat so that the minimum
temperature of return water can be guaranteed.
5. We recommend you to use the boiler in a system with one equalizing tank the volume of which should
be 500 - 100 l to achieve a higher service life of the pellet burner and lower fuel consumption.
CAUTION - If the boiler is equipped with Laddomat 22 or a hot-water thermo-
regulation valve TV 60 °C (65/70/72/77 °C) and an equalizing tank (see the attached
diagrams), the boiler body is subject to an extended guarantee of 36 months instead
of24months.Theguaranteeperiodoftheotherpartsremainsunchanged.Ifthese
principles are not observed, the service life of the boiler body may be considerably
reduced due to low-temperature corrosion.
CAUTION-INSTALLERSHOULDALWAYSCOMPLYWITHLOCALPLANNING
ANDBUILDINGREQUIREMENTS.

Operation manual - EN
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1. Application
ATMOS D15PX and D20PX hot-water boilers are designed for convenient heating of family
houses, holiday homes and other buildings with pellets. Their compact solution enables installation in
small boiler rooms.
For the heating you can use high-quality wooden pellets with the diameter of 6 to 8 mm. The
boiler is not intended for burning of wood, sawdust and minor wood waste.
2. Technical description
Boilers D15PX and D20PX are supplied as a complete plant with a built-in conveyor, pellet
reservoir with the volume of 175 l and ATMOS A25 pellet burner. They are designed for electronically
controlled burning of pellets with automatic ignition of fuel. The pellet burner is incorporated into the
front part of the boiler in the door of the lower combustion chamber. This chamber is also used as an
area for ash.
The boiler body is made as a weldment of steel sheets with the thickness of 3 - 6 mm. It consists
of the combustion chamber with ceramic shaped bricks for ideal flame burn out with high efficiency.
A tube exchanger with a segmental decelerators with function of rough (operation) cleaning without
necessity of taking them out is placed in the back part of the boiler. The boiler body is insulated from
the outside with mineral felt located under the sheet-metal covers of the outer boiler jacket.
A fuel reservoir from which the pellets are transported to the burner with a screw conveyor is
located in the top part. Fuel metering is controlled fully automatically.
In the fron part of the boiler there is a panel with the main switch, the switch of the pellet burner
(L2), an operation (control) thermostat, a safety thermostat, a thermometer and a 6.3 A fuse.
The boiler is not equipped with a cooling loop against overheating as thanks to the small quantity
of fuel in the burner there is no risk of boiler overheating in case of a power supply failure. Boilers
DxxPX is equiped with exhaust fan.
The DxxPX boiler with the ATMOS A25 burner, conveyor and fuel reservoir 175 l.

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Operation manual - EN
Layout of the instrument panel
1. Thermometer 5. Safety thermostat
2. Main switch 6. Main operating instructions
3. Control thermostat (of the boiler) 7. 6.3A fuse - T6, 3A/1500 - type H
4. Burner switch (L2) 8. Place for an electronic control unit (92x138 mm)
Description:
1. Thermometer - monitors the output temperature of the boiler water
2. Main switch - allows you to switch off the whole boiler if necessary (restart the pellet burner)
3. Control thermostat - control the operation of the pellet burner by the output temperature of the
boiler water
4. Burner switch - it is used to start the burner and to stop it (initiate the burn-down process) before
cleaning of the boiler.
6. Main operating instructions
5. Irreversiblesafetythermostat - it serves as protection of the boiler from overheating in case of
a failure of the control thermostat or as an indicator of exceeding of the emergency temperature -
after exceeding of the emergency temperature it must be reset
7. Fuse (6.3 A) - protection of the electronic unit of the pellet burner
8. The place for an electronic control unit of the heating system can be fitted with any control
unit that matches the opening (92 x 138 cm), e.g. ACD01, ACD03. The electric harness is already
prepared for its power supply.
I
O
85. .
I
O
2 5 4 3 8 67 1

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3. Technical specifications
ATMOS boiler type D15PX D20PX
Boiler output kW 4 - 15 6 - 20
Heat-delivery area m21,9 1,9
Fuel shaft volume (pellet tank) dm3175 175
Filling opening dimensions mm 542x480 542x480
Prescribed chimney draught Pa 15 16
Max. working overpressure of water kPa 250 250
Boiler weight kg 345 345
Exhaust pipe diameter mm 150/152 150/152
Boiler height mm 1411 1411
Boiler width mm 674 674
Boiler depth mm 1447 1447
Ingress protection of the electric part IP 20
El. power input - on startup
- in operation W572/1092 92
572/1092
92
Boiler efficiency % 92,7 91,5
Boiler class 5 5
Energy efficiency class A+ A+
Flue gas temperature at the nominal output
(pellets) °C 118 142
Weight flow of flue gas at the nominal output
(pellets) kg/s 0,011 0,015
Prescribed fuel (preferred)
high-quality pellets
with the diameter of 6 - 8 mm
and the caloric value of 16 - 19 MJ/kg-1
Average consumption of fuel - pellets
- at the nominal output kg.h-1 3,6 4,5
Water volume in the boiler l 76 76
Hydraulic loss of the boiler mbar 0,20 0,20
Minimum volume of the equalizing tank l 500 500
Mains voltage V/Hz 230/50
The prescribed minimum temperature of return water in operation is 65 °C.
The prescribed operation temperature of the boiler is 80 - 90 °C.

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Operation manual - EN
Captions for the diagrams of the boilers
Technical specifications
1. Boiler body
2. Cleaning door (code: S0459)
3. Pellet Burner ATMOS A25 - (code: H0044)
4. Control panel
5. Conveyor
6. Door filling - Sibral - large with hole
for the burner (code: S0266)
7. Door gasket, 18 x 18 mm (code: S0240)
8. Closure (code: S1047)
9. Insulation under the burner (code: S0164)
10. Fuel tank 175 l
11. Tube heat exchanger
12. The decelerator with a cleaning pull rod and
handle
13. Heat-resistant fire brick – bottom of the com-
bustion chamber
14. Heat-resistant fire brick – screen
15. Thermometer (code: S0041)
16. Main switch (red) (code: S0092)
17. Control (boiler) thermostat (code: S0021)
18. Burner switch (black) (code: S0102)
19. Safety thermostat (code: S0068)
20. Fuse T6,3A/1500 - typ H
21. Cleaning lid cover
22. Exhaust fan
23. Condenser for exhaust fan - 1μF
24. Cleaning lid of the rear drain
25. Reservoir cover
26. Burner connecting hose – length 550 mm,
Ø 60 mm
K - flue gas orifice
L - water outlet from the boiler
M - water inlet to the boiler
N - socket for the filling tap
Dimensions D15PX D20PX
A1411 1411
B1 1145 1145
B2 1447 1447
C674 674
D 1213 1213
E150/152 150/152
G140 140
H1150 1150
CH 166 166
I166 166
J6/4” 6/4”

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Diagrams of the boilers
Sections of the D15PX and D20PX boilers
Exhaust fan schematics
CAUTION– The extraction ventilator is supplied disassembled. Place it over the rear flue-
gas duct, tighten everything well, connect into a socket and test for its smooth operation.
1 - Motor
2 - Plate
3 - Rotating wheel (stainless steel)
4 - Nutwithleft-handedthread and washer
5 - Wing nut
6 - Bolt
7 - Large gasket (2 pcs)
8 - Small gasket
E
B1
B2
J
J
H
G
C
D
A
CH
I
E
B1
B2
J
J
H
G
C
D
A
CH
I
N
M
L
K
B2
B1
1
2
3
5
6
7
8
9
10
11
12
14
15 16 17 18 19 20
24
22
21
23
25
57
4
26
16
2
4
3
7 8
5

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4. Fuel
The prescribed fuel are high-quality pellets of Ø 6 - 8 mm and the length of 10 - 25 mm and
the calorific value of 16 - 19 MJ/kg-1. Such pellets are considered as high-quality pellets that do not
disintegrate into sawdust and are made of soft wood without bark and other pollutants (white pellets).
We also recommend you to burn pellets without biological additives that reduce burning-down of the
fuel and increase ash production.
5. Accessories delivered with the boiler
Steel brushes with accessories 1 piece
Poker for cleaning of the boiler body 1 piece
Poker for easy cleaning of the combustion chamber of the pellet burner 1 piece
Filling tap 1 piece
Operation and maintenance manual 1 piece
Connecting burner pipe Ø 65 mm - lenght 550 mm 1 piece
6. Boiler foundations
Boiler type (mm) A B
D15PX, D20PX 700 1000
High-quality wooden pellets - white without
black dots (bark)
Poor-quality wooden pellets - dark with bark
(with black dots)
We recommend you to make concrete (metallic)
foundations for the boiler.

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7. Type of environment and location of the boiler with the
burner in the boiler room
Boilers with a pellet burner may be used in the
AA5/AB5 basic environment in accordance with the
ČSN3320001 standard. Boilers must be installed in
a boiler room with guaranteed sufficient supply of
combustion air. It is unacceptable to locate boilers on
residential premises (incl. corridors). The cross-section
of the opening for supply of combustion air to the
boiler room must be at least 350 cm2for boilers with
an output of 15 - 45 kW.
1. Chimney
2. Flue gas duct
3. Boiler
4. A25 burner
8. Chimney
A boiler with a burner must always be connected to the chimney vent with consent of the
responsible chimney maintenance company. The chimney vent must always produce sufficient
draught and exhaust flue gas to the free atmosphere in virtually all operation conditions. For proper
function of boiler the separate chimney vent must be properly dimensioned as the combustion, output
and service life of the boiler depends on its draught. The draught of a boiler directly depends on
its cross-section, height and roughness of the inner wall. No other device may be connected to the
chimney to which a boiler is connected. The diameter of the chimney must not be smaller than the
outlet on the boiler (min. 150 mm). The chimney draught must achieve prescribed values (see the
technical specifications in the boiler manual). However, the boiler must not be excessively high so as
not to reduce the efficiency of the boiler and not to disturb its combustion (tear the flame). In case of
too strong draught install a throttling flap or draught reducer in the flue gas duct between the boiler
and the chimney.
Guideline values of dimensions of the chimney cross-section:
20 x 20 cm height 7 m
Ø 20 cm height 8 m
15x15cm height 11 m
Ø 16 cm height 12 m
The exact determination of chimney dimensions is defined by the ČSN 73 4201 standard.
The prescribed chimney draught is specified in the “Technical data” chapter of the manual of the
particular boiler.
min. 200 mm
min. 500 mm
min. 1000 mm
min. 500 mm
1
2
3
4

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Operation manual - EN
9. Flue gas duct of the boiler
The flue gas duct from the boiler must lead to the
chimney vent. If the boiler cannot be connected directly to
the chimney vent, the corresponding flue gas duct adapter
must be as short as possible with regard to the particular
conditions, but not longer than 1 m, without additional
heating surface and it must rise towards the chimney. Flue
gas ducts must be mechanically strong and leak-proof for
flue gas and cleanable inside. Flue gas ducts must not lead
through other owners‘ residential or commercial units. The
inner cross-section of the flue gas duct must not be larger
than the inner cross-section of the smoke uptake and must
not get narrower towards the chimney. The use of smoke
elbows is not suitable. Designs of passages of flue gas ducts
through structures of flammable materials are defined in
Annexes 2 and 3 of ČSN 061008 and are mainly suitable for
mobile units, wooden huts, etc.
1- Flue gas thermometer
2- Cleaning opening
3 - Throttling flap (draught reducer)
INFO- In case of too strong draught of the chimney install a throttling flap or a draught
reducer /3/ in the flue gas duct, see the ATMOS price list.
10. Fire protection within the installation and use of heat appliances
Extract from ČSN 061008 - Fire safety of local appliances and sources of heat
Safe distances
On installation of an appliance the safe distance from building materials must be maintained, at least
200 mm. This distance is valid for boilers and flue gas ducts located near flammable materials of the
B, C1 and C2 flammability class (the flammability class is specified in tab. no. 1). The safety distance
(200 mm) must be doubled if boilers and flue gas ducts are located near flammable materials of the
C3 class (see tab. no.1). The safety distance must be doubled if the flammability class of flammable
material is not evidenced. The safety distance may be reduced to a half (100 mm) if you use a non-
flammable heat insulating panel (asbestos panel) with the thickness of at least 5 mm, located 25 mm
from the protected flammable material (flammable insulation). A shielding panel or protective screen
(on the protected object) must exceed the outline of the boilers (incl. flue gas ducts) at each side by
at least 150 mm and the top surface of the boiler by at least 300 mm. A shielding panel or protective
screen must also be used to protect fixtures of flammable materials if the safe distance cannot be
maintained (e.g. in mobile units, huts, etc. - more details in ČSN 061008). The safety distance must
also be maintained in case of installation of fixtures near boilers.
Boiler Chimney

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If boilers are located on a floor of flammable materials, they must be installed on a non-flammable,
heat-insulating pad, exceeding the ground plan at the side of the feeding and ashpan opening by at
least 300 mm before the opening - at the other sides by at least 100 mm. As non-flammable, heat
insulation pads you can use all materials of the A flammability class.
Tab. 1
Flammability classes of build-
ing materials and products
A - no ammability granite, sandstone, concrete, brick, ceramic tiles, mortar, re-resist-
ant plastering, etc.
B - dicult ammability Akumin, Izomin, cemented breboard, Lignos, panels of basalt felt,
breglass panels, Novodur
C1- poor ammability hardwood (oak, beech), hardboard panels, plywood, Sirkolit, Wer-
zalit, hardened paper (Formica, Ecrona)
C2- medium ammability softwood (pine, larch, spruce), chipboard and cork panels, rubber
ooring (Industrial, Super)
C3- high ammability Fibreboard panels (Hobra, Sololak, Sololit), cellulose materials,
polyurethane, polystyrene, polyethylene, lightened PVC
WARNING - In circumstances leading to the danger of transient ingress of flammable
gases or vapours and during work that might result in a temporary risk of a fire or explosion
(e.g. gluing of linoleum, PVC, etc.) the boilers must be put out of operation in time before
the occurrence of the danger. Noobjectsofflammablesubstancesmaybeputonthe
burner and boiler in a smaller distance than the safe distance from them (more - see
ČSNEN13501-1).
11. Connection of boilers to the electric mains
The boilers are connected to 230 V, 50 Hz mains with a mains cable without a plug. The mains
supply cable in case of repair it must be replaced with the same type by the servicing organization.
Connection, maintenance and reparation can be made only by a qualified person in accordance with
valid regulations of the particular country.
CAUTION- The mains cable must not be equipped with a plug (designed to be connected
to a socket). It must be connected in a fixed way to a switchboard or junction box to avoid
confusion of the conductors.
Mains cable must be regularly checked and maintained in the prescribed condition. It is forbidden
to interfere in to the safety circuits and elements for safe and reliable operation of the boiler. If any
damage of electrical equipment must be the boiler out of operation, disconnect from the mains and
ensure a qualified repair according to applicable standards and regulations.

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Operation manual - EN
Connectors in the right side hood:
1- connector for power cord - black (L - brown, N - blue, PE - green/yellow)
2 - connector for pump in boiler circuit - white (L - brown, N - blue, PE - green/yellow)
3- connector for exhoust fan
4 - connector for external regulator of the boiler (with jumper) - do not disconnect the connector
5 - connector for control of the boiler conveyor from the ATMOS A25 burner
6 - temperature sensor outlet – TSV sensor of flue-gas temperature in the exchanger and the TK
boiler temperature sensor
7 -
connector for burner ATMOS connection model AC07X - (L1, L2, R, R2,N, PE)
Example of mounting of the TV and TS sensors
leading from the burner to the equalizing
tank for control of the boiler operation by
two temperatures. An example of fixing the
connection during installation of pneumatic
cleaning of the pellet burner (connection of the
burner and compressor).
Connectors in the front part of right side hood
Connectors in the back part of right side hood
3 -
4 -
- 1
- 2
- 5
- 6
- 7
Location of the starting capacitor (1μF) for an
exhaust fan
Electrical installation of the boiler under the front
bonnet

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12. Electric wiring diagram for the D15PX and D20PX boiler
with an extraction fan - model AC07X with a 6-pin connector
INFO - In case that you want to control the pump in the boiler circuit according only to the
temperature set in the ATMOS A25 pellet burner, disconnect the thermostat of the pump
70 °C – item E.

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Operation manual - EN
13. Electric diagram of the ATMOS A25 burner - for boilers
D15PX and D20PX - AC07X model (R, R2, sensors TV, TS,
TK, TSV) with additional module AC07X-C - (R5, R6)
- basic version
AC07X-C extending module for control of pneumatic cleaning of the burner or sending information, e.g., through GSM or for control of external boiler.

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14. Electric diagram of the ATMOS A25 burner - for boilers
D15PX and D20PX - AC07X model (R, R2, sensors TV, TS,
TK, TSV) with additional module AC07X-C - (R5, R6) - R5
and R6 used for sending of information about burner or for
switching of external boiler when puting pellet boiler out of
operation (failure).
INFO - With the similar way is possible to use reserve output R6.
CAUTION - In the idle state (the main switch of the boiler turned off) the outputs are:
R5 = OFF and R6 = ON.

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Operation manual - EN
15.ObligatoryČSNENstandardsforthedesignandinstalla-
tion of boilers
ČSN EN 303-5 - Central heating boilers using solid fuel
ČSN 06 0310 - Central heating, design and installation
ČSN 06 0830 - Safety devices for central heating and hot water preparation
ČSN EN 73 4201 - Designing of chimneys and flues
ČSN EN 1443 - Chimney structures - General requirements
ČSN 06 1008 - Fire safety of local appliances and sources of heat
ČSN EN 13501-1 - Fire classification of construction products and building structures - part 1
ČSN EN 1264-1 - Floor heating - Systems and components - Definitions and marking
ČSN EN 1264-2 - Floor heating - Systems and components - Heat output calculation
ČSN EN 1264-3 - Floor heating - Systems and components - Design
ČSN EN 442-2 - Heating elements - Tests and their evaluation
Standards for evaluation of conformity and other technical standards:
ČSN EN ISO 12100:2012, ČSN EN 953+A1:2009, ČSN EN ISO 11202:2011, ČSN EN ISO
3746:2011, ČSN ISO 1819:1993, ČSN EN 60335-1ed.2:2003
CAUTION-Theinstallationoftheboilermustalwaysbecarriedoutinaccordancewitha
prepared design. The boiler may only be installed by persons trained by the manufacturer.
16. Selection and method of connection of control and heating-
system elements
The boilers are delivered to the user with the basic control of the boiler output, which complies
with the requirements for the heating comfort and safety. The control ensures the required output
temperature of the boiler water (80 - 90 °C). Boilers are equipped with connector for connection of
the pump in the boiler circuit and functions for its control directly from the regulation of the ATMOS
A25 burner or together through the thermostat of the pump TP 70 °C (connected in series - from serial
production). The connection of these elements is indicated in the electric wiring diagram.
Each pump in the system must be controlled with a separate thermostat to avoid cooling of the
boiler at the return line below 65 °C.
If the boiler is installed without a storage or equalizing tank, the pump in the circuit of the heated
building must be controlled by a separate thermostat or electronic control unit to only run when the
pump in the boiler circuit is running. Therefore switch the pump in the circuit of the heated building if
the boiler temperature is higher than 80 °C.
If there is very good spontaneous (gravity) circulation of water between the boiler and the system,
which increase the time necessary for the boiler to reach the required temperature, we can disconnect
TČ70 °C pump thermostat and decrease switching temperature for the pump in boiler circuit to a lower
temperature (Parameter S37).
The required water temperature for the building is always set with the use of a three-way mixing
valve. The mixing valve may be controlled manually or with an electronic control unit, which will
contribute to more comfortable and more economical operation of the heating system. The way of
connection of all the elements is always determined by the designer in accordance with the specific

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conditions of the heating system. The electric installation related to the sufficient equipment of the
boilers with the above mentioned elements must be implemented by a qualified person in accordance
with valid ČSN EN standard. If you install the ACD01, ACD03/04 electronic control unit, follow the
instructions in the operation manual of this unit. Connect this control unit in the boiler in accordance
with the electric wiring diagram in this manual. NeverswitchofftheACD01,ACD03/04electronic
control unit outside the heating season (with the main switch on the boiler)!
When connecting the boiler with the equalizing (accumulation) reservoir, the boiler is controlled
best according two TS and TV sensors located on the tank. Switching of pumps in the system circuit
in this case does not depend on the boiler temperature and therefore it is solved according to potential
requirements of the system.
For the installation of the boiler can be use an open expansion vessel; however, it may
alsobeclosedifpermittedbythelegislationoftheparticularcountry.Youmustinstall
the boiler in such a way to avoid its overheating and consequent damage even in case
of a power supply failure.
During the installation support the back part of the boiler to raise it by 10 mm to
facilitate its rinsing and bleeding.
For the control of the heating system we recommend the following controllers:
a) ATMOS ACD 03 / 04 - Eqvithermal controller for solid fuel boilers
b) ATMOS ACD 01 - Eqvithermal controller set for solid fuel boilers
c) KOMEXTHERM, Praha tel.: [phone]
d) KTR, Uherský Brod tel.: [phone]
17. Protection of the boiler from corrosion
The prescribed solution consists in the installation of the boiler with Laddomat 22, or a thermo-
regulation valve, which allows you to create a separated boiler and heating (primary and secondary)
circuit to ensure the minimum temperature of return water to the boiler of 65 °C. The higher the
return water temperature is, the lower you will keep condensation of tar and acids that are harmful for
the boiler body. The output water temperature of the boiler must be permanently in the range of
80 - 90 °C. Another variant is connection of the boiler with a three-way mixing valve with an actuator
controlled from the electronic controler (e.g., ATMOS ACD01, ACD03, ACD04) to keep minimum
temperature of the water returning to the boiler (65 - 75 °C).
The flue gas temperature must not drop below 110 °C during normal operation. A low flue
gas temperature causes condensation of tar and acids even though the output water temperature
(80 - 90 °C) and the return water temperature (65 °C) is maintained. These situations may occur e.g.
in case of a wrong setting of the pellet burner (low output - ALARM SETTINGS).
The D15PX and D20PX boilers are equipped with a function for the control of flue-gas
temperature. In case of bad adjustment of the output (too low), the boiler is shutdown and alarm is
activated – ALARMSETTINGS.
CAUTION - We recommend you to always use the D15PX, D20PX boilers in
combination with an equalizing tank with the volume of 500 to 1000 l.

EN
www.atmos.cz
20 - EN
Operation manual - EN
18. D15PX, D20PX boiler connection with buffer tank to
control the burner by TV and TS sensors and boiler pump
control from the burner by boiler temperature (sensor TK)
19. D15PX, D20PX boiler connection with buffer tank and
regulation ACD01
Ts
Tv
termostat
thermostat
40°C - 60°C
MAX. 60°C
filtr
filter
mísící ventil
mixing valve
čerpadlo
pump
obytné místnosti
haritable rooms
tlakoměr, přetlakový ventil,
odvzdušňovací ventil
pressure gauge, safety
valve, deaerator
tlaková
expansní
nádoba
pressure
expansion
vessel
ventil
valve
ventil
valve
ventil
valve
filtr
filter
ventil
valve
bojler TUV
DHW boiler
ventil
valve
ventil
valve
ventil
valve
ventil
valve
vyrovnávací nádrž
buffer tank
500 - 1000 l
odvzdušňovací ventil
deaerator
Tk
Tsv
odtahový ventilátor
extraction fan
Laddomat 22
A25
R2
R
KSPF
(Ts)
PF
(Tv)
MAX. 60°C
filtr
filter
mísící ventil
mixing valve
čerpadlo
pump
obytné místnosti
haritable rooms
tlakoměr, přetlakový ventil,
odvzdušňovací ventil
pressure gauge, safety
valve, deaerator
ventil
valve
ventil
valve
ventil
valve
filtr
filter
ventil
valve
bojler TUV
DHW boiler
ventil
valve
ventil
valve
ventil
valve
ventil
valve
vyrovnávací nádrž
buffer tank
500 - 1000 l
odvzdušňovací ventil
deaerator
Laddomat 22
A25
AF
ATMOS
ACD 01
WF
M
SDW10/20
VF
SF
tlaková
expansní
nádoba
pressure
expansion
vessel
Tk
Tsv
odtahový ventilátor
extraction fan
R
(INFO-parameter:S6=3,S14=12,S15=2)
(INFO-parameter:S6=1,S14=0,S15=1)