Atmos DC105S User manual

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Instruction manual - GB
Instruction
manual

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Instruction manual - GB

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GB-3
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Instruction manual - GB
Contents
1. Intended use 5
2. Technical description 5
Control panel appearance 6
Advantages of the boilers 6
3. Technical data 7
Boiler drawing key 8
Technical data 8
Drawing of the boiler 9
Extraction ventilator schematics 10
4. Type and seating of shaped pieces into combustion area 10
5. Boiler supplied accessories 10
6. Fuel 11
Basic wood burning data 11
Fuel heating capacity 11
7. Boiler base 12
8. Environment type and boiler placement in a boiler room 12
9. Chimney 12
10. Flue-gas duct 13
11. Fire prevention during installation and use of heating appliances 14
12. Connecting boilers to the electric network 15
13. Wiring diagram of boiler DC105S, DC150S with a flue gas thermostat and two exhast fans 16
14.ObligatoryČSNENstandardsrelatedtoboilerdesigningandinstallation 17
15. Choice and connection method of control and heating elements 17
16. Boiler corrosion protection 18
17. Specified boiler connection with thermoregulatory valve and with an buffer tank 18
18. Prescribed boiler connection with controlled return water in to the boiler and an buffer tank 19
19. Recommended boiler connection with accumulations tanks 19
20. Thermoregulatory valve 20
21. Operating a system with accumulation tanks 20
Tanks insulation 20
Advantages 20
22. Connection of overheat protecting cooling loop with a safety valve Honeywell TS 131 - 3/4 ZA or
WATTS STS20 (valve opening temperature 95 - 97 °C) 21
23. Operating instructions 21
Preparing boilers for operation 21
Ignition and operation 21
Waste gas thermnostat setting 22
Output regulation 22
24. Setting the boiler output and combustion 23
Setting of primary and secondary air for DC105S and DC150S 23
25. Fuel Refill 24
26. Slow-burning mode 25
27. Boiler cleaning 25
28. Heating system maintenance - including boilers 27
29. Use and inspections 27
30. Possible failures and troubleshooting 28
31. Spares 29
Heatproof shaped piece (nozzle) replacement 29
Door sealing cord replacement 30
Adjusting the door hinges and locks 30
32. Environmental protection 30
Disposal of the boiler after expiration of its service life 30
GUARANTEECONDITIONS 31
BOILERINSTALLATIONREPORT 32
ANNUALINSPECTIONRECORDS 33
RECORDSABOUTGUARANTEEPERIODANDAFTER-GUARANTEEPERIODREPAIRS 34

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WE HOPE THAT YOU ARE SATISFIED WITH OUR
PRODUCTANDWEKINDLYRECOMMENDYOU
TOFOLLOWTHESEMAINRULESIMPORTANTFORA
LONGSERVICELIFEANDTHECORRECTFUNCTION-
ALITY OF THE BOILER
1. Installation, ignition test and operator‘s training will be carried out by an installation company
trained by the manufacturer. This company also completes a boiler installation report (p.32).
2. During the gasification process, wood tar and condensates (acids) form in the fuel storage tank.
Therefore, there must be a thermoregulatory valve installed behind the boiler or an electronically
controlled three-way valve on the return piping in order to keep the minimum temperature of
water returning to the boiler at 65 °C. Operating temperature of water in the boiler must be
in the 80 - 90 °C range.
3. The boiler must not be permanently operated in an output lower than 50 %.
4. Operation of every circulating pump in the system must be regulated by an individual thermostat
in order to keep the specified minimum temperature of water returning to the boiler. The
boiler-circuit pump shall be switched on and off by means of a thermostat built in the boiler (set
to 70 °C).
5. The boiler operates environmentally friendly if working at the nominal output level.
6. We therefore recommend installing the boiler with accumulating storage tanks, which provides
20 - 30 % fuel consumption decrease, longer service life of both – the boiler and the chimney,
and user-friendlier operation.
7. If you cannot install the boiler with accumulation tanks of required volume, then we require that
you install at least one equalising tank; the volume of which should be 1000 l.
8. When operating the boiler in a lower-output mode (summer operation or heating up hot potable
water), it is necessary to fire-up daily.
9. Use only dry fuel with 12 - 20 % moisture content – 2 years old.
CAUTION-IftheboilerisinstalledwithaTV60(65/70/75)°Cthermoregulatory
valve or with an electronically controlled three-way valve for keeping the min. tem-
perature of water returning to boiler at 65-70°C in combination with accumulation
storage tanks (see the schematics), the guarantee period for the boiler drum is extend-
ed from 24 to 36 months. The guarantee period for other parts remains 2-year long.
In non-compliance with these principles, the drum’s and the heatproof shaped pieces’
service life may dramatically decrease due to low-temperature corrosion. The boiler
drum may corrode in as little time as 2 years.

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1. Intended use
The environmentally friendly boilers ATMOS DC105S and DC150S are intended for heating in
gardening centres, large houses, various workshops, business premises and similar buildings. The
boilers are suitable for outputs ranging between 70 - 150 kW.
The boilers are designed for burning wood pieces only. Any dry wood may be used for heating.
Wood logs and wood splits of 550 - 750 mm maximum length (depending on boiler type) in particular.
Larger diameter logs may be used as well; then the boiler‘s nominal output decreases and the combus-
tion time increases. The boilers are not intended for burning saw dust or small-particle wood waste.
Due to their huge feeding hopper, it saves the user a lot of laborious wood splitting and treating
operations. It saves both - the physical effort and also the time dedicated to these operations.
2. Technical description
The boilers are designed for burning wood based on generator gasification principle utilising two
extraction fans (ventilators), which extracts the flue gas from the boiler The boiler drum is manufac-
tured as a welded structure of 3 - 10 mm thick steel sheets. The boiler consists of a fuel-feeding hopper
which is in the lower section fitted with a heatproof (nozzle) shaped piece with a longitudinal opening
allowing the waste gasses and fumes to escape. The burn-off chamber situated underneath is fitted
with other heatproof (fireclay) shaped pieces. There is a vertical flue-gas duct in the back of the boiler
body which is in the upper section equipped with an ignition valve. A gas outlet pipe for a chimney
connection is situated in the upper part of the flue-gas duct. The boiler‘s front wall is fitted with a
loading door (in its upper section) and an ash-pan door (in the lower section). Lids are placed on both
sides of the ash-pan door. A tube heat exchanger with flue gas brakes are situated behind these lids.
In the front section of the upper hood there is an ignition valve pulling rod. The boilers’ drum is ex-
ternally heat insulated by mineral wool placed beneath the sheet metal covers of the boilers’ external
housing. A control panel for electromechanical regulation is situated in the upper part of the boiler.
Primary air for ideal burning of the boiler enter on the sides of the boiler through a special valves
controlled by actuators. Secondary air is supplied from the front and rear sides of the boiler. The pri-
mary and secondary air is pre-heated to a high temperature.

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Control panel appearance
Description:
1. Thermometer – indicates the temperature of water exiting the boiler
2. Mainswitch – used to completely shut down the boiler
3. Waste gas thermostat – is used to switch off the ventilators when the waste gas temperature
drops – after the fuel has burnt out. The boiler-circuit pump stops operating simultaneously with
the ventilators.
CAUTION – when firing up (igniting), set the waste gas thermostat to (‚‘0 °C“- firing-up).
After flaring up, set the waste gas thermostat to „operation“ position. The user needs to de-
termine the optimal operating position for particular conditions. Should the waste gas tem-
perature fall below the preset value, the thermostat switches the ventilator off. If you want
the ventilator to start operating again, set a lower temperature on the waste gas thermostat
(e.g. set it to „0 °C“ - firing-up).
4. Control thermostat no. 1 (boiler thermostat) – controls the first ventilator operation depending
on the temperature of water exiting the boiler. Set it to temperature of 85 - 90 °C.
5. Ignition valve pulling-rod – is used for opening up the ignition valve during ignition or fu-
el-loading stage.
6. Control thermostat no. 2 (boiler thermostat) – controls the second ventilator operation depend-
ing on the temperature of water exiting the boiler. Set it to temperature of 80 - 85 °C.
7. Pressure gauge – indicates the current pressure of water in boiler.
8. Safety irreversible thermostat – serves as boiler protection against overheating in case of con-
trol thermostat failure or as an indication of exceeding the emergency temperature. If such exceed-
ing occurs, it is then necessary to depress the thermostat.
9. Area for electronic regulation of the heating system can be used to house any type of regulation
system that fits into an aperture of 92x138 mm. The electric harness is prefabricated and ready to
be used for the regulation’s power supply.
Advantages of the boilers
The burning happens at very high temperatures with a generator-gasification function. This fea-
ture means fuel savings and environmentally friendly operation. The boilers have the primary and
secondary air pre-heated to a high temperature. Therefore, they are characterised by a warm and sta-
ble flame with consistent combusting quality. The large feeding hopper allows burning of large wood
logs and splits up to 550 / 750 mm max. length. The boilers are fitted with a cooling loop protecting
it against overheating and with two thermostats for switching the boiler-circuit pump.
1. Outgoing water thermometer
2. Main switch
3. Waste gas thermostat
4. Operating thermostat of the ventilator no. 1
5. Ignition valve control
6. Operating thermostat of the ventilator No. 2
7. Pressure gauge
8. Safety thermostat
9. Area for electronic regulation of the heating
system (92x138 mm)
1
0
2 8 1
469 3 5 7

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3. Technical data
ATMOSboilertype DC105S DC150S
Boiler output kW 105 150
Heating surface m27,6 8,8
Fuel shaft volume dm3300 400
Feeding hole dimensions mm 450 x 315 450 x 315
Specied chimney draught Pa 25 25
Max. operating water-pressure kPa 250 250
Boiler weight kg 901 1030
Gas-outlet pipe diameter mm 200 200
Boiler height mm 1813 1813
Boiler width mm 1010 1010
Boiler depth mm 1095 1295
Electric parts ingress protection IP 20 20
Electric input W 185 185
Boiler eciency % 90,8 90,3
Boiler class 5 5
Waste gas temperature at nominal output °C 172 180
Waste gas combustion products ow
weight at nominal output kg/s 0,053 0,075
Specied fuel
dry wood of 15 - 17 MJ.kg-1 caloric power,
min. 12 % - 20 % max. water content
and 80 - 150 mm diameter.
Average fuel consumption kg.h-1 28 38
Fuel consumption per heating season 1 kW = 1 stacked cubic meter
Maximum wood length mm 550 750
Combustion time at nominal output hod. 2 4
Boiler water volume l 265 306
Hydraulic pressure drop mbar 0,27 0,29
Equalising tank minimum volume l 1000 1000
Connecting voltage V/Hz 230/50
Speciedmin.temperatureofwaterreturningtoboileris65°Cwheninoperation.
Speciedboileroperatingtemperatureis80-90°C.

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Boiler drawing key
Technical data
Dimensions DC105S DC150S
A1813 1813
B 1010 1010
C1095 1295
D 1459 1459
E200 200
F129 129
G721 721
H492 492
I307 307
J2” 2”
1. Boiler drum
2. Loading door
3. Ash-pan door
4. Exhaust fan - ventilator (J22RR552) - 2x
5. Heatproof shaped piece – nozzle
6. Control panel
7. Safety thermostat
8. nozzle cube - prolongation
9. Heatproof shaped piece
- spherical space - upper part
10. Heatproof shaped piece
- spherical space - bottom part
11. Heatproof shaped piece - half moon
12. Primary air screen - 2x
13. Ignition valve
14. Frame sheild
15. Tube heat exchanger lid
16. Cleaning lid - bottom
17. Ignition valve pulling rod
18. Thermometer
19. Ventilator no. 1 thermostat (operating)
20. Switch
21. Module AD03 - 2x
22. Door closing
23. Filling-in valve
24. Ventilator no. 2 thermostat (operating)
25. Door lling – Sibral - large
26. Door sealing – cord 18 x 18
27. Cleaning lid - upper
28. Flue gas thermostat
29. Pump thermostat - 70 °C
30. Pump thermostat - safety - 95 °C
31. Cooling loop protecting against overheating
32. Capacitor - 2x
33. Flue gas brake - in ue gas duct - 2x
34. Belimo actuator
35. Flue gas brake - in tube heat exchanger - 4x
36. Secondary air regulation
K – the ue-gas duct neck
L – the boiler water outlet
M – the boiler water inlet
N – lling valve pipe sleeve
P – sleeve for a sensor of the valve which regu-
lates the cooling loop (TS 131, STS 20)
S – spare output (such as for an expansion tank
or a water heater)
R – spare output (such as for an expansion tank
or a water heater)

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Drawing of the boiler
DC105S
DC150S

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Extraction ventilator schematics
CAUTION – The extraction ventilator (S) is provided disassembled. Place it over the rear
flue-gas duct, tighten everything well, connect into a socket and test for its smooth opera-
tion.
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
4. Type and seating of shaped pieces into combustion area
For type:
DC105S DC150S
CAUTION – The spherical space must be fully insert on the back wall of the combustion
chamber.
5. Boiler supplied accessories
Steel brush with accessories 1 pc
Pokers 2 pc
Filling-in valve 1 pc
Operating and maintenance instructions manual 1 pc
Ash-pan 1 pc
Flue-gas duct 1 pc
16
2
4
3
7 8
5

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6. Fuel
The specified fuel is dry split logwood of 150 - 250 mm diameter, at least 2 years old, with mois-
ture content of 12 % to 20 %, 15 - 17 MJ.kg-1 caloric power and maximum length 550 - 750 mm (based
on the boiler type).
The boiler is intended for combustion of soft or hard wood logs.
Do not use a small fuel and wood waste for heating.
Basic wood burning data
You can ensure maximum output and a long service life if you burn wood which has been left for
at least 2 years to dry. The following graph illustrates the relationship of moisture content to heating
capacity of the fuel. The energy content declines dramatically with increased water contents.
Example:
Wood with 20 % moisture contents has thermal power of 4 kWh /1 kg of wood
Wood with 60 % moisture contents has thermal power of 1.5 kWh /1 kg of wood
●Example – spruce wood which has been stored for 1 year under shelter – see graph
The graph illustrates the boilers maximum
output with wet fuel.
kW
DC105S - 84
DC150S - 120
Boilers are not suitable for burning wood with moisture content lower than 12 %.
Fuel heating capacity
Wood - type Heating capacity per 1 kg
kcal kJoule kWh
Spruce 3900 16250 4,5
Pine 3800 15800 4,4
Birch 3750 15500 4,3
Oak 3600 15100 4,2
Beech 3450 14400 4,0
Raw wood does not burn easily, produces a lot of smoke and substantially decreases
the service life of your boiler and chimney. Boiler output drops as low as 50 % and fuel
consumption doubles.

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7. Boiler base
We recommend providing a concrete (metal) base under
the boiler.
Boiler type [mm] A B
DC105S 1000 800
DC150S 1000 1000
8. Environment type and boiler placement in a boiler room
Boilers may be used in a “basic environment” - AA5/AB5
as specified in Czech standard ČSN3320001. Boilers must be
placed in a boiler room with sufficient air access necessary for
combustion. Placing boilers in living areas (including halls/
corridors) is not permitted. The combustion air inlet aperture
in the boiler room must be of minimum 450 cm2.
1 – Chimney
2 – Flue-gas duct
3 - Boiler
9. Chimney
Connecting the appliance to the chimney vent stack must always be carried out with the per-
mission of the appropriate chimney authority. The vent stack must always be capable of providing
sufficient draught and it must discharge the waste gas into the open atmosphere in a reliable manner
for all possible operating conditions. The dimensions of the individual vent stack must be correct to
ensure good functionality of the boiler; because the draught influences combustion, performance
and the service life of the boiler. The chimney draught is directly dependent on its cross-section,
height and the inner wall ruggedness. It is not permitted to connect another appliance into a chimney
into which a boiler is connected. The chimney diameter must not be smaller than the boiler outlet
(min. 200 mm). The chimney draught must comply with the specified values. It must however not be
excessively high, otherwise the boiler effectiveness is decreased and the combustion is affected (the
flame “breaks”). In case of excessive draught, install a throttle valve in the flue-gas duct between the
boiler and the chimney.
Indicative values of the chimney cross-section dimensions:
20 cm diameter height 11 m
25 cm diameter height 9 m
Exact chimney dimensions are stipulated in Czech standard ČSN 73 4201.
Specified chimney draught is stated in section 3 „Technical data“.

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10. Flue-gas duct
The flue-gas duct must be connected into the chimney
vent stack. If the boiler cannot be connected to the chim-
ney directly, the appropriate flue-gas duct extension must
be as short as possible in the given circumstances, but
not longer than 1m, it must be without additional heating
surface and must incline upwards in the direction to-
wards the chimney. Flue-gas ducts must be mechanically
durable and sealed against combustion products and com-
bustion gas penetration, and it must be possible to clean
them inside. The flue-gas ducts must not be lead through
another person‘s apartment or property. The internal di-
ameter of the flue-gas duct must not be larger than the
internal diameter of the chimney intake and it must not
decrease in width in the direction towards the chimney.
Use of elbow-pipes is not suitable. Methods for providing
flue-gas duct entries through flammable material struc-
tures are stipulated in appendices 2 and 3 of the Czech
standard ČSN 061008. These are appropriate for mobile
installations, wooden cottages etc. The flue-gas duct shall
always be fitted with a waste gas thermometer.
1- Waste gas thermometer
2- Cleaning aperture
3- Throttle valve (draught limiter)
In case of excessive chimney draught, install a throttle valve or draught limiter (regulator) /3/.
Boiler Chimney

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11. Fire prevention during installation and use of heating appliances
Selected from ČSN 061008 – Fire safety of local appliances and heat sources.
Safe distances
When installing the appliance, keep a minimum safe distance of 200 mm from building materials.
This distance is valid for boilers and flue-gas ducts positioned near flammable materials of the B, C1
and C2 flammability class (the flammability classes are listed in chart 1). It is necessary to double
the 200 mm safe distance if the boilers and flue-gas ducts are placed near flammable materials of C3
class (see chart 1). It is also necessary to double the safe distance if the flammability class of the mate-
rial in question cannot be determined. The safe distance can be decreased to one half (to 100 mm) if a
heat insulating, non-combustible screen (asbestos board) of a 5-mm minimum thickness, is placed 25
mm from the protected combustible material (so called flammable insulation). The screening board
or protection screen (on the protected object) must exceed the boiler outline including its flue-gas duct
on each side by at least 150 mm and by at least 300 mm above its upper surface. The screening board
or protection screen must be also used for all fixtures and fittings from combustible materials in cases
where the safe distance cannot be maintained (such as in mobile structures or wooden cottages etc. -
for more details see ČSN 061008 standard). The safe distance must be maintained even when placing
fixtures and fittings near the boilers.
If boilers are placed on floors from combustible materials, the floor must be fitted with a non-com-
bustible, heat insulating pad exceeding the boiler’s ground-outline on the side where the stoking and
ash-pan apertures are, by at least 300 mm (in front of the aperture) and on all the other sides by at
least 100 mm. The non-combustible, heat-insulating pad can be made from any material of the „A“
flammability class.
Chart 1
Flammability classes of building
materials and products
A – non-combustible granite, sandstone, concrete, bricks, ceramic tiles, mortars,
reproong plasters etc.
B – non-easily ammable Akumin, Izomin, Heraklit, Lignos, basalt felt boards, bre-
glass boards, Novodur
C1 – low degree of ammability deciduous tree wood (oak, beech), Hobrex boards, plywood,
Sirkolit, Werzalit, hardened paper (Formica, Ecrona)
C2 – medium degree of ammability coniferous tree wood (pine tree, larch, spruce), chipboards
and cork boards, rubber ooring (Industrial, Super)
C3 – high degree of ammability breboards (Hobra, Sololak, Sololit), cellulose materials,
polyurethane, polystyrene, polyethylene, foamed PVC
CAUTION-In circumstances when there is a risk of temporary access of flammable gases
or fumes, or during works when a temporary fire or explosion risk may possibly occur (such
as gluing linoleum, PVC etc.) the boilers must be put out of operation long enough before
the risk occurrence. Noitemsfromflammablematerialsmaybeplacedontheboilersor
near them in a distance lower than the specified safe distance (more ČSNEN13501-1).

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12. Connecting boilers to the electric network
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 switch board 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 dam-
age 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.
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 exhaust fan 2
4- connector for exhaust fan 1
Connectors in the right side hood Connectors in the left side hood
1 -
2 -
3 -
- 4

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13. Wiring diagram of boiler DC105S, DC150S with a flue gas
thermostat and two exhast fans

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14.ObligatoryČSNENstandardsrelatedtoboilerdesigning
and installation
ČSN EN 303-5 - Solid fuel boilers for central heating
ČSN 06 0310 - Central heating, designing and assembly
ČSN 06 0830 - Safety devices for central heating and hot potable water heating
ČSN EN 73 4201 - Designing chimneys and flue-gas ducting
ČSN EN 1443 - Chimney structures – General requirements
ČSN 06 1008 - Fire safety of local appliances and heat sources
ČSN EN 13501-1 - Fire classification of construction products and construction of buildings - Part 1
ČSN EN 1264-1 - Floor heating – Systems and components – Definitions and symbols
ČSN EN 1264-2 - Floor heating – Systems and components – Heat output calculation
ČSN EN 1264-3 - Floor heating – Systems and components – Designing
ČSN EN 442-2 - Heaters – Testing and test analysis
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boilermustbeinstalledincompliancewithadesignpreparedinad-
vance. Installation may only be carried out by persons trained by the manufacturer.
15. Choice and connection method of control and heating elements
Boilers are provided to the user with the basic boiler performance control elements compliant with
requirements for convenient heating and its safety. The regulation ensures that the required temperature
of the water exiting the boiler (80 - 90 °C) is adhered to. The boiler is equipped with two thermostats
(70 °C and 95 °C ) for switching the boiler-circuit pump. The 70 °C thermostat switches the boiler-circuit
pump on as soon as the temperature exceeds this value. The 95 °C thermostat is a safety component.
It protects the boiler against overheating in case of incorrectly set waste-gas thermostat (it switches the
boiler-circuit pump on always when the boiler water temperature exceeds 95 °C). Connection of these
elements is illustrated in the wiring diagram. General rule is that every pump in the system must always
be controlled by a separate thermostat to avoid a temperature drop of water returning to the boiler un-
der 65 °C. After the boiler has been installed, the pump situated in the heated-building circuit must be
switched by means of a separate thermostat or electronic regulation. Setting the required water tempera-
ture for the building is always achieved by means of a three-way mixing valve. The mixing valve can be
regulated manually or by electronic regulation, which contributes to a more convenient and economical
operation of the heating system. The connection of these additional elements is always designed by a
specialist designer to suit specific conditions of the heating system. Electric installations related to the
additional equipping the boilers with the above mentioned elements must be carried out by an expert in
compliance with valid ČSN EN standards.
When installing the boiler, we recommend using an opened expansion tank. However, a
closed tank may also be used if permitted in the standards of the specific country. The
boiler must always be installed in a way which prevents overheating (and subsequent
damage) even during a power cut. It is because the boiler has certain momentum. Boiler
should always be connected with accumulation (buffer) tank with minimal volume 1000 l.
There are several ways of protecting the boiler against overheating. Connecting an over-
heat prevention cooling loop with a TS 131 3/4 A (95 °C) or WATTS STS 20 (97 °C) valve
to the public water system. In cases when the user has his/her own well, the boiler can
be additionally protected by using a back-up power supply (battery with an exchanger)

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for operation back-up of at least one pump. Another option is connecting the boiler to an
after-cooling tank and reversal zone valve. When installing the boiler, position the rear
section 10 mm higher in order to facilitate circulating and air-bleeding.
For the heating system regulation we recommend regulation elements provided by the
following companies:
For the control of the heating system we recommend the following controllers:
a) ATMOS ACD 01 - equithermal control set for solid fuel boilers
b) KOMEXTHERM, Praha tel.: [phone]
c) KTR, Uherský Brod tel.: [phone]
d) Landis & Staefa tel.: [phone]
16. Boiler corrosion protection
The specified solution is connecting the boiler with a thermoregulatory valve or a three-way mix-
ing valve operated by a servo-drive, controlled by electronic regulation, which can separate the boiler
circuit from the heating circuit (primary and secondary circuits), and provide minimum tempera-
ture of 65 - 75 °C for water returning to boiler. The higher the temperature of water returning to the
boiler, the fewer tars and acids condensing. The tars and acids damage the boiler. Temperature of the
outgoing water must permanently range between 80 - 90 °C. The combustion products (waste gas)
temperature must not drop below 110 °C during normal operation. Low waste-gas temperature caus-
es condensation of tars and acids even when the specified outgoing water temperature of 80 - 90 °C
and returning water temperature of 65 °C are adhered to. These conditions may occur when using the
boiler to heat hot potable water (HPW) in summer, or when heating only a section of the building. In
this case we recommend connecting the boiler with accumulation tanks, or daily firing-up.
17. Specified boiler connection with thermoregulatory valve
and with an buffer tank

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GB-19
GB
Instruction manual - GB
18. Prescribed boiler connection with controlled return water
in to the boiler and an buffer tank
19. Recommended boiler connection with accumulations tanks
Boiler type and output section A section B
in copper in steel in copper in steel
DC105S, DC150S 54x2 50 (2”) 42x1,5 40 (6/4”)
In case that a cooling loop preventing overheating is connected, it is possible to omit the oating non-
return ap valve on bypass of the pump, thermal valve or of the three-way mixing valve.
Pipeline diameters if connected with accumulation tanks

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20-GB
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Instruction manual - GB
20. Thermoregulatory valve
Thermoregulatory valve type, TV 60 (65/70/75) °C is used with
solid fuel boilers. When the boiler water temperature reaches
+ 60 °C , the thermoregulatory valve opens and fluid from the
building heating circuit (2) enters the boiler circuit ( 3 →1). In-
lets 1 and 3 always remain open. This ensures that the minimum
temperature of the water returning to the boiler is maintained.
TherecommendedsizeoftheTV60(65/70/75)°C
thermoregulatoryvalveisDN50
21. Operating a system with accumulation tanks
Ignite the boiler and allow the accumulation tanks to “charge” to the required water temperature
of 90 - 100 °C by the boiler’s maximum output operation (2 to 4 loads). Then leave the boiler to stop
burning. Afterwards keep withdrawing heat from the storage utilising the three-way valve for a period
of time corresponding to the size of accumulation tanks and the external temperature. In the heating
season (and if adhered to specified min. accumulation tanks volumes – see chart) this could take 1 – 3
days. If the accumulation method (5000 - 6000 litres for DC105S), (8000 - 9000 litres for DC150S) can-
not be used, then the boiler must be connected with at least one tank of 1000 litre volume for equalising
the boiler start-ups and run-outs.
ThestandardATMOSaccumulationtanksprovided
TANKTYPE VOLUME(l) DIAMETER(mm) HEIGHT (mm)
AN500 500 600 1970
AN750 750 750/790* 2010/1750*
AN800 800 790* 1910*
AN1000 1000 850/790* 2065/2210*
* typ DH
Tanks insulation
A suitable solution is joint mineral wool insulation of the particular number of tanks (of required
volume) placed together into a plasterboard structure, or additional filling with granular insulation.
When using the mineral wool, the specified minimum insulation thickness is 120 mm. Another option
is purchasing tanks in a leather-cloth housing insulated by mineral wool (see the price list).
Advantages
Installing the boiler with accumulation tanks provides several advantages:
- lower fuel consumption (by 20 – 30 %), the boiler operates in full output and at optimal effective
ness of 89 - 91 % until the complete combustion of the fuel
- prolonged boiler and chimney service life – minimum formation of wood-tars and acids
- possibility to combine it with other heating methods – accumulated electric power, solar collectors
- combination of wall radiators and floor heating
- convenient heating and ideal fuel combustion