Viadrus HERCULES U 22 BASIC Specification sheet

Hercules U26
Návod k obsluze
VIADRUS HERCULES U 22 BASIC
MANUAL FOR BOILER OPERATION
AND INSTALLATION

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Contents: page
1. Usage and advantages of the boiler.........................................................................................................3
2. Technical data of the boiler ......................................................................................................................4
3. Description................................................................................................................................................6
3.1 Construction of the boiler....................................................................................................................6
3.2 Regulating and security elements.......................................................................................................6
4. Placing and installation.............................................................................................................................8
4.1 Regulations and instructions...............................................................................................................8
4.2 Placing possibilities.............................................................................................................................8
5. Order, delivery and assembly.................................................................................................................10
5.1 Order.................................................................................................................................................10
5.2 Delivery and accessories..................................................................................................................10
5.3 Assembly procedure.........................................................................................................................10
6. Putting into operation – instructions for a contractual service organization............................................13
6.1 Control operation before starting ......................................................................................................13
6.2 Putting the boiler into operation........................................................................................................13
7. User’s boiler service...............................................................................................................................14
8. IMPORTANT NOTICE............................................................................................................................15
9. Maintenance...........................................................................................................................................15
10. Instructions for product liquidation after its operating life .......................................................................16
11. Warranty and defect liability ...................................................................................................................16

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Dear customer,
thank you for buying the general – purpose VIADRUS HERCULES U 22 BASIC boiler and thus
showing belief in the company VIADRUS a.s.
At first read this operating manual (especially Chapter Nr.7 – User’s boiler service and Chapter Nr. 8 –
Important notice) to get used to a proper usage with your new product from the very beginning. We
request to maintain the further mentioned information and particularly to perform the prescribed
annual checks by an authorized specialized company by which a long – time failure – free operation
of your boiler - to your and our satisfaction - is secured.
VIADRUS HERCULES U 22 BASIC is a cast-iron sectional low-pressure boiler designated for combustion of
solid fuels – coke, hard coal, wood.
Burning of other materials such as plastic is unallowable.
1. Usage and advantages of the boiler
Three – sectional size of the boiler VIADRUS HERCULES U 22 BASIC is appropriate for heat source
reconstruction in self – contained flats, for smaller residential and recreational facilities. Bigger sizes of the
boiler meet the requirements of heating the family houses, shops, schools, etc.
The boiler is manufactured in warm-water design with both natural and forced heating water circulation and
working overpressure up to 400 kPa (4 bar). Before dispatch the boiler is tested for tightness by applying
800 kPa (8 bar) overpressure.
Advantages of the boiler:
1. High operating life of cast iron exchanger and all other parts with respect to the quality of used materials.
2. Design approved in the long term.
3. Elaborate production technology on automatic forming lines with consistent and approved quality of the
production process (ISO 9001, ISO 14 001).
4. Efficiency of coke and anthracite burning – 75 – 80 %, efficiency of wood burning – 75 %.
5. Simple service and maintenance.
6. Low demandingness for chimney draught.
7. Power gradation according to the sections.

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2. Technical data of the boiler
Chart Nr. 1 Dimensions, technical parameters of the boiler
Section number pcs 3 4 5 6 7 8 9 10
Weight kg 218 252 282 312 347 377 417 448
Water space volume l 31,5 36,2 40,9 45,6 50,3 55,0 59,7 64,4
Firing chamber volume l 34 47 60 73 86 99 112 125
Firing chamber depth mm 244 339 434 529 624 719 814 909
Diameter of smoke socket mm 156 176
Boiler dimensions:
- height x width mm 917 x 508
- depth mm 682,5 778,5 874,5 970,5 1066,5
1162,5
1258,5
1354,5
Water operating overpressure kPa
(bar) 400 (4)
Testing water overpressure kPa
(bar) 800 (8)
Hydraulic loss - See Fig. no.1
Recommended heat water
operating temperature °C 60 - 90
Recommended return water
operating temperature °C 60
Noise level dB Not exceeding the level of 65 dB (A)
Minimum chimney draught mbar 0,14 0,16 0,18 0,20 0,22 0,24 0,26 0,28
Boiler connections:
- heat water DN 50
- returnable water DN 50
Chart Nr. 2 Heat - technical parameters of the boiler
granularity 30 – 60 mm heating value: 26 - 30 MJ. kg
-1
– coke and antracite
humidity 15 - 25 % heating value: 12 - 15 MJ. kg-1 - wood
Section number pcs 3 4 5 6 7 8 9 10
Rated power kW 17,7 23,3 29,1 34,9 40,7 46,5 52,3 58,1
Efficiency % 75 - 80
Orientation fuel consumption –
coke kg.h-1 2,87 3,77 4,71 5,65 6,59 7,53 8,47 9,41
Heating value – coke MJ. kg
-
1
27,8
Orientation fuel consumption –
anthracite kg.h-1 3,0 3,95 4,93 5,92 6,9 7,88 8,87 9,85
Heating value – anthracite MJ. kg
-
1
28,31
Orientation fuel consumption –
wood kg.h-1 5,0 6,4 8,0 9,59 11,19 12,79 14,39 15,67
Heating value – wood MJ. kg
-
1
15,01
Product of consumption
temperature °C max. 280
0
50
100
150
200
250
300
15 20 25 30 35 40 45 50 55 60
Fig. no. 1 Hydraulic loss of the boiler drum
Pa
Power in kW

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Section number 3 4 5 6 7 8 9 10
L 328 424 520 616 712 808 904 1000
L1 682,5 778,5 874,5 970,5 1066,5 1162,5 1258,5 1354,5
Ø D 156 156 156 156 156 156 176 176
Fig. no. 2 Main dimensions of boiler

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3. Description
3.1 Construction of the boiler
The main part of the boiler is the cast iron section boiler drum made of grey cast iron according to:
ČSN 42 2415 Grey iron 42 2415 with luminated graphite, or
ČSN 42 2420 Grey iron 42 2420 with luminated graphite
Pressure parts of the boiler correspond to the demands on solidity according to:
ČSN 07 0240 Warm-water and law-pressure steam boilers
ČSN 07 0245 Warm-water and law-pressure steam boilers. Warm-water boilers up to 50 kW output.
The boiler drum consists of sections with the help of pressured boiler nipples and is secured with boiler
screws. The sections create burning and ash space, water space and a convective part. Heat water input and
output are situated at the back part of the boiler.
The back section of the boiler has a smoky chimney – pot and a heat water flange in the upper part, and a
returnable water flange with a socket for filling and draining cock. Stoker and ash door and a firebox door
under them are fixed to the front section.
The whole boiler drum is isolated with a stifling, mineral isolation that reduces losses by sharing heat into the
surroundings. The steel jacket is fitted in colour with a quality comaxite paint.
At the boiler three types of medium sections are used: in the front part of the boiler (except the three and four
– section size) there is a section with a recess for easier fuel inserting to the average up to 220 mm, then
sections without a molding, in the back part with a molding. The molding closes the burning space and carries
back the flame and product of consumption from the back space to the front part of the boiler, i.e. by the back
path in smoky draughts it is perfectly taken advantage of the product of consumption heat.
Chart Nr. 3 Medium sections of the boiler
Section number 3 4 5 6 7 8 9 10
Medium section with a recess - - 1 1 1 1 1 1
Medium section with a molding 1 2 2 3 4 5 5 6
Medium section without a molding - - - - - - 1 1
3.2 Regulating and security elements
Smoke flap of the smoke extension regulates the output amount of flue gases from the boiler to the chimney.
It is controlled by a handgrip at the rear of the boiler.
The choker (stifling) of the ashpan door regulates the supply of combustion air under the grate of boiler. It is
controlled manually by means of an adjusting screw of the choker (stifling).
The air rosette of stoking door is used for supply of the secondary air into the combustion chamber. To
control the rosette it is necessary to use a tool because of a higher surface temperature of the stoking door.
The small cover for cleaning of the smoke extension that is located in its bottom part serves for cleaning the
deposits resulting from the combustion.
A combined device - thermo-manometer is used to detect the temperature of heating water and water
pressure in the heating system. This device is placed in the upper part of the jacket. The thermowell of the
sensor of the thermo-manometer is located at the top of the rear boiler section.

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1. Boiler drum
2. Stoker door
3. Ash door
4. Smoky chimney – pot
5. Boiler drum insulation
6. Jacket
7. Thermomanometer
8. Sealing Ø 90 x 60 x 3
9. Heat water flange
10. Returnable water flange
11. Filling and draining cock
Fig. no. 3 Main parts of boiler

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4. Placing and installation
4.1 Regulations and instructions
The boiler for solid fuels can be installed by a company with a valid authorization to perform its
installation and maintenance. For installation a project in accordance with valid regulations must be
executed.
The heating system must be filled with water, that meets the ČSN 07 7401 requirements, especially its
harness must not exceed the required parameters.
Recommended values
Hardness mmol/l 1
Ca
2+
mmol/l 0,3
Concentration of total Fe + Mn mg/l (0,3)*
*) recommended value
WARNING!!! The use of anti-freeze mixture is not recommended by the manufacturer.
a) to the heating system
ČSN 06 0310 Heating systems in buildings – Designing and installation
ČSN 06 0830 Heating systems in buildings – protecting device
ČSN 07 0240 Warm-water and law-pressure steam boilers
ČSN 07 0245 Warm-water and law-pressure steam boilers. Warm-water boilers up to 50 kW output.
ČSN 07 7401 Water and steam for thermal energy equipments with working pressure up to 8 MPa.
b) to the chimney
ČSN 73 4201 Chimneys and flue gas ducting– designing, implementation and connection of fuel
consumers.
c) regarding the fire regulations
ČSN 06 1008 Fire safety of heat installations.
EN 13501-1 +A1 Fire classification of construction products and building elements – Part 1:
Classification using test data from reaction to fire tests
d) to the system of HWS heating
ČSN 06 0320 Heating systems in buildings – Hot water preparation – Designing and planning
ČSN 06 0830 Heating systems in buildings – Safety devices.
ČSN 75 5409 Water installations inside buildings
4.2 Placing possibilities
Boiler positioning in the living space (including corridors) is prohibited!
The installation of the boiler must comply with all requirements of ČSN 06 1008.
Boiler placing with regard to fire regulations:
1. Placing on floor of flame resistant material (Fig. no. 4)
-boiler to be put on a flame resistant backing exceeding the boiler platform over 20 mm at sides and
only on the boiler drum depth.
-if the boiler is situated in a cellar we recommend to place it on a bedding of minimum 50 mm height.
2. A safe distance from the combustible materials:
-when installing and operating the boiler it is necessary to keep a safety distance of 200 mm from the
materials of combustibility grade A1, A2, B and C (D);
-for easily combustible materials of combustibility grade E (F), which quickly burn and burn
themselves even after removal of ignition source (such as paper, cardboard, asphalt and tar paper,
wood and wood-fiber boards, plastics, floor coverings) the safe distance has to be doubled, i.e. to
400 mm;
-safe distance should be doubled as bulb where the grade of reaction to fire has not been proved.

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Chart Nr. 4 Grade of reaction to fire
Grade of reaction to fire Examples of building materials and products included in the reaction to fire
(Extract from EN 13 501-1 + A1)
A1 – incombustible Granite, sandstone, concrete, bricks, ceramic tiles, mortars, fireproof plasters, …
A2 – combustible with difficulty
acumin, izumin, heraklit, lignos, boards and basalt felt, fibreglass boards,...
B– hardly combustible Beech and oak wood, hobrex boards, plywood, werzalit, umakart, sirkolit,...
C (D) – medium combustible Pinewood, larch, whitewood, chipboard and cork boards, rubber flooring,...
E (F) – easily combustible Asphaltboard, fibreboards, cellulose materials, polyurethane, polystyrene,
polyethylene, PVC,…
Section number
3 4 5 6 7 8 9 10
A [mm] 420 515 610 705 800 895 970 1085
Fig. Nr. 4 Bedding dimensions
The boiler placing with respect to the necessary
handling space:
-basic surroundings of AA5/AB5 according to
ČSN 33 2000-1 ed. 2
-handling space of minimum 1000 mm in front of the
boiler must be maintained
-a minimum distance of 400 mm between the back
part of the boiler and the wall
-to maintain space for access to the back part of the
boiler of minimum 400 mm at least from one lateral
face
-a minimum distance of 100 mm from the side wall
Fuel placing:
-it is disallowed to store fuel behind the boiler or to
unload it beside the boiler in the distance smaller
than 400 mm
-it is disallowed to store fuel between two boilers in a
boiler room
-the producer recommends to keep distance of
minimum 1000 mm between the boiler and fuel or to
place the fuel to a another room than that where the
boiler is installed
Fig. No. 5 Boiler placing in a boiler room

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5. Order, delivery and assembly
5.1 Order
In the order the following is needed to be specified:
1. Boiler size.
2. Demands on optional accessories.
5.2 Delivery and accessories
The boiler is delivered according to the order in a manner that a complete boiler drum is located on the
palette and a covered boiler jacket is fixed on the side. The accessories are stored inside the boiler drum and
is available after opening the stoker door. The boiler is covered in the transfer packing and must not be
turned over during the transit, only a declination into sides for taking down of the boiler drum packing is
allowed.
Standard accessories:
• boiler drum 1 pc
• boiler jacket 1 pc
• thermomanometer 1 pc
• filling and draining cock Js 1/2“ 1 pc
• plug Js 6/4“ blind 1 pc
• stifling screw 1 pc
• washer 10,5 16 pcs
• nut M10 16 pcs
• screw into metal ST 4,8 x 13 4 pcs (3 – 5 sect.), 6 pcs (6 – 10 sect.)
• flange of heat water DN 50 1 pc
• flange of returnable water DN 50 with
a socket Js 1/2“ for filling and draining cock 1 pc
• well of thermostat G 1/2" 1 pc
• sealing φ90 x 60 x 3 2 pcs
• sealing φ60 x 48 x 2 1 pc
• capillary spring 1 pc
• round ferrule 1 pc
• commercial& technical documentation
On request:
•draft regulator
•hanging pin
Accessories supplied on request are not included in the basic price of the boiler.
5.3 Assembly procedure
Fig. no. 6 The examples of open expansion tanks connection
1 Heat source
2 Expansion tank
3 Safety piping
4 Expansion piping
5 Overflow piping
6 Filling piping
7 Water level limiter
8 Reverse piping

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Every heat source in an open heat system must be connected with an open expansion tank positioned at the
highest point of the heat system. The expansion tanks must be rated in the way that they can contain the
changes in water volume resulting from heating and cooling.
The open expansion tanks must be equipped with non-closable bleeder and a overflow pipes. The overflow
pipe must be designed in the way that it safely drains off the maximum flow volume entering the system. This
can be achieved by rating the overflow pipes by one DN higher than that of the filling piping. The expansion
tanks and their connecting pipes must be designed and positioned in the way that freezing is reliably
inhibited.
Boiler drum installation
Fig. no. 7 Boiler drum installation
1. Position the boiler body on the supporting brickwork (bedding).
2. Insert sealing ∅90 x 60 x 3 on the upper flange of the rear boiler section and mount the flange of
heating water. Pre-weld the flange to the heating water distribution system.
3. Insert sealing ∅90 x 60 x 3 on the lower flange of the rear boiler section and mount the flange of return
water with a sleeve piece for water inlet valve and outlet valve. Pre-weld the flange to the heating water
distribution system.
4. After connecting the boiler to the heating system do screw an elbow with a water inlet valve and outlet
valve into the sleeve piece of the return water flange
5. Screw on G 1/2 " thermowell of thermostat in the hole in the upper rear boiler section (see Figure 7a).
Fig. no. 7a)
1 Check valve for
the manometer
2 Well of thermostat
1. Sealing φ90 x 60 x 3
2. Heating water flange
3. Washer10,5
4. Nut M10
5. Sealing φ90 x 60 x 3
6. Return water flange
7. Washer 10,5
8. Nut M10
9. Filling and draining cock

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6. Insert a smoke pipe on the smoke extension and push in into the chimney opening.
7. Two threaded holes Js 6/4 "in the front boiler section must be blinded by using plugs Js 6/4".
Mounting of the jackets
1. Remove the jackets from the carton package.
2. Put down the insulation on the boiler drum.
3. Mount the side parts of the jacket on the anchor bolts and attach them by using washers and nuts.
4. Insert the thermo-manometer into the upper part of the jacket.
5. Put the upper part of the jacket on the side parts of the jacket and screw on by using the screws
ST 4.8 x 13.
1. Boiler drum insulation
2. Left side part of the jacket
3. Washer 10,5 (4 pc)
4. Nut M10 (4 pc)
5. Right side part of the jacket
6. Washer 10,5 (4 pc)
7. Nut M10 (4 pc)
8. Upper part of the jacket
9. Screw ST 4,8 x 13 (4 pcs for 3 – 5 sect., 6 pcs for 6 – 10 sect.)
10. Thermomanometer
Fig. no. 8 Jacket assembly of the boiler

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Filling of the heat system with water:
Water for filling of the boiler and the heat system must be pure and colourless, without suspended
substances, oil and chemically aggressive substances. Its hardness must correspond to ČSN 07 7401 and in
case it does not correspond it is necessary the water to be adjusted. Even multiplying heating of the water
with higher hardness does not prevent from excluding of soils on the boiler drum walls. The precipitation of
1 mm of limestone reduces in the given place the heat transfer from metal to water by 10 %.
Heat systems with an open expansive tank allow direct contact of the heat water with atmosphere. In the heat
period the expansive water in the tank absorbs oxygen that increases the rust effects and at the same time a
considerable vaporization of water occurs. Only water adjusted to values according to ČSN 07 7401 can be
used for fill – up. The heat system is needed to be rinsed so as all impurities have been washed out.
During heat period it is necessary to keep consistent water volume in the heat system. While filling – up of the
heat system with water it is necessary to prevent the air from leeching onto the system. The water from boiler
and heat system must never be impregnated or taken out for use except for cases necessarily needed such
as repairs, etc. By draining the water and filling with new one the risk of rust and scale creation is increased.
If it is needed to fill water into the heat system we fill it only to a cooled down boiler to prevent
section cracking. After filling of the boiler and heat system checking of tightness of all joints is needed.
The finishing of assembly and the heat test performance must be recorded in the warranty card.
6. Putting into operation – instructions for a contractual service
organization
Putting the boiler into operation can be performed only by a contractual service organization
authorized for performing of this operation.
6.1 Control operation before starting
Before starting the boiler it is needed to check:
a) filling the heat system with water (thermomanometer check) and system tightness.
b) connection to chimney – this connection can be performed only with consent of a relevant chimney
company according to ČSN 73 4201.
6.2 Putting the boiler into operation
1. Performance of fire in the boiler.
2. Setting the boiler on the necessary operating temperature. The recommended temperature of the output
water is 80 °C.
3. Operating of the boiler in the operating condition according to the competent standards.
4. Repeatedly check the boiler tightness.
5. Introduction of the user with servicing.
6. Making a record into the Warranty card.

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7. User’s boiler service
COKE, ANTHRACITE
The optimal fuel is coke with granularity of 40 – 60 mm but it is possible to burn even coke and anthracite
with granularity of 20 – 40 mm (nut 2). In case of sufficient chimney draught (0,15 to 0,25 mbar) it is possible
to burn even non – caking anthracite with granularity of 30 – 50 mm (nut 1) and 50 – 80 mm (cobbles).
WOOD
To reach the rated power of the boiler it is necessary to keep a maximum humidity at wood of 20 %.
Cleaning of the grate is performed so as the hot fuel would not get through to the ashtray.
The fuel needs to be stored in dry conditions.
Chart Nr. 5 Recommended dimensions of wooden logs
Section number 3 4 5 6 7 8 9 10
Log average [mm] φ40 to 100
Log length [mm] 180 270 360 450 540 630 720 810
Other sorts of wood such as wood clips, wood shavings, sawdust, granules or coal – cakes can be used as
additional fuel. In case of heating with smaller clogs (wood clips, wood shavings, sawdust, granules) it is
necessary to put logs in the bottom part of the burning chamber so as the fuel would not get through to the
ashtray. It is possible to reach smoother burning by further interlaying of the fuel.
These sorts of fuel must have heating power in the range of 12 to 15 MJ.kg
-1
and humidity to 20 % to prevent
from reducing of the mentioned boiler power.
Heating up
1. Check the water volume in the heat system on the thermomanometer.
2. Open the closing armatures between the boiler and the heat system.
3. Clean out the grate, ashtray, smoky channels and boiler walls.
4. Spread out the kindling through the ash door with the stoker – hole on a cleaned grate along its entire
depth.
5. Set the smoky flap in the chimney – pot to position – open and close the stoker door.
6. Set the kindling afire through open ash door and stoker door.
7. Close the stoker hole and ash door and fully open the stifling
8. Thinner layout of the basic fuel to be put up on the burning wood.
9. After its good burning up more fuel to be put up to the bottom part of the stoker hole, the fuel to be
stacked to a uniform layout along its entire boiler depth.
10. As soon as the fuel grades to a dark red flame the air rose of the secondary air input on the stoker hole to
be opened with an instrument.
11. After flames become yellow the air rose of the secondary air input to be closed.
Provoz
1. After reaching the heat water temperature the burning air input to be adjusted. The boiler power in rough
limits is regulated with a chimney draught change with a help of the smoky flap in the chimney – pot. The
fine power control is performed by means of a choker (stifling) by manual regulation of the air intake
under the grate. The choker (stifling) in the ashpan door must be almost closed the at the moment when
it is reached the required temperature of heating water.
2. According to heat needs and burning intensity the boiler is needed to be supplied with fuel during the
operation. Feeding the fire so as the fuel layout was equally high along the entire boiler depth.
3. When using the anthracite it is necessary the air rose of the secondary air input in the stoker hole to be
partly opened for the whole time of the build – up of gases and flames out of freshly fed fuel (the air rose
of the secondary air input with regard to the surface temperature is necessary to be controlled with an
instrument.
4. At change over to night still operation the grate to be cleaned out, the freshly fuel to be let well burnt up
and then the boiler power to be suppressed by throttling of the chimney draught with chimney flap in the
chimney – pot and by turning down the air rose of the secondary air input. The smoky flap and air rose
opening level is necessary to be tried out, it is always necessary to make sure that the product of
consumption did not get away to the boiler room.
5. The morning boiler operation reconditioning to be performed by opening of the smoky flap and air rose
and with grate raking after opening the ash door.
6. The ash door must be during the operation permanently closed.
7. The ashtray to be emptied according to needs (gloves need to be used).

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8. IMPORTANT NOTICE
1. The boiler only can be used for the purpose that it is destined for.
2. The boiler must be operated only by adults who are introduced to these operating instructions. It
is unallowable to let children at the boiler unattended of adults. Interventions into the boiler
design that could threaten the health of the operating staff, eventually the inmates, are
disallowed.
3. The boiler is not destined for the use by persons (incl. children) whose physical, sensual or
mental disability or lack of experience and knowledge prevent them from a safe use of the
appliance unless they are supervised or if they were not instructed on the use of appliance by a
person responsible for their safety.
4. Children should be supervised in order to ensure that they do not play with the appliance.
5. If there is a risk of rise and getting away of flammable steams or gas into the boiler room or at
operations by which there is an intermediate risk of fire or blast (sticking of floor coverings,
paintings with flammable colours), the boiler must be disabled from operation before the
beginning of operations.
6. Using of flammable liquids is DISALLOWED for firing the boiler.
7. It is DISALLOWED to overheat the boiler during its operation.
8. Objects of flammable materials must not be put on the boiler and to a distance smaller than that
of a safety distance from it
9. Flammable materials must not be in the minimal distance of 1500 mm from the boiler when
emptying the ash at the boiler.
10. The space at the point of choking valve rotation of the ashtray door must be cleaned in case of
clogging with fuel, ashes or other impurities in order to avoid its rubbing thus wrong functioning.
11. When the boiler operates at a lower temperature than of 60 °C the retting, or the so called low –
temperature rust, of the boiler drum may occur that reduces the operating life of the boiler drum.
Therefore we recommend to operate the boiler at a temperature of 60 °C or higher.
12. After finishing of the heating period it is necessary to properly clean the boiler, smoke stack and
chimney – pot. The fulcrum pin, smoky flap mechanism and other movable parts to be covered
with graphite grease. And the boiler room to be kept clean and dry.
13. In case the heating system is not daily used in winter season, then the water from boiler must be
drained.
14. It is necessary to install a safety valve for maximum overpressure of 400 kPa (4 bar) on the
system and its dimension must correspond to the rated boiler output. The safety valve must be
located directly behind the boiler. Any stop valve must not be located between the safety valve
and boiler. If you have any questions, please contact our contractual assembly firm and service
organizations.
15. During assembly, installation and operation of the appliance it is necessary to comply with
standards that apply in the relevant country of destination.
If you fail to meet these conditions you cannot requisite the guarantee repairs.
9. Maintenance
1. The ash from the ashtray to be emptied during the operation of the boiler even several times per day
according to the sort of used fuel because a full ashtray hampers the right distribution of the burning air
under the fuel and causes unequal burning process of fuel on the grate. All remains in the firebox
especially the clinker are removed before each new burning up and at morning boiler operation
reconditioning. The ash is needed to be put away into the fire – resistant tanks with a cover. It is
necessary to use protective facilitations and to pay attention to personal safety while operating.
2. The boiler walls inside the firebox, smoky boiler draughts and smoky chimney – pot to be cleaned
1x per month if heating with coke. The cleaning to be performed 1x per week when heating with
anthracite.
3. If there is a settlement of tar silt on the walls of the burning space while using fuels with higher gas build –
up it can be removed with a scraper or by burning out with a help of dry wood (eventually coke) when
setting the boiler to the maximum operating temperature.

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10. Instructions for product liquidation after its operating life
VIADRUS a.s., is contractual partner of firm EKO – KOM a.s. with client number F00120649.
The packages comply with EN 13427.
With respect to the fact that the product is designed out of common materials the individual parts are
recommended to be liquidated in the following manner:
-exchanger (grey cast iron), by a company engaged in salvage and liquidation of waste
-tube distributions, jacketing, by a company engaged in salvage and liquidation of waste
-other metal parts, by a company engaged in salvage and liquidation of waste
-ROTAFLEX sealing materials in common waste
We recommend to dispose the packages in the following way:
- plastic foil, cardboard cover, use a salvage point
- metal strapping tape, use a salvage point
- wooden base, is designated for a single usage and no longer can be used as a product. Its disposal is
subject to Act. 477/ 2001 Sb. a 185/2001 Coll. as amended.
In case that the product has lost its manufacture qualities there can be taken the advantage of
product taking back (if this is established), in case that the originator has declared that this is a
waste and it must be handled according to the valid legislation of the relevant country.
11. Warranty and defect liability
VIADRUS a.s. grants a warranty:
–For boilers 24 months after the boiler putting into operation, but maximum 30 months after the date it was
dispatched from the manufacturing factory.
–For boiler drum 5 years after the date its dispatch from the manufacturing factory.
The user is obliged to leave the boiler installation to an assembly company, putting into operation and defect
removing only to a professional contractual service accredited by the boiler producer VIADRUS a.s. otherwise
the warranty for proper boiler operation is not valid.
If the boiler is operated according to the instructions mentioned in the “Instructions for the boiler operation
and installation”, the boiler does not require any special professional service interventions.
“Certification of the quality and completeness of the VIADRUS HERCULES U 22 BASIC boiler” serves for
filling in by a contractual service organization as the ”Warranty card”.
For an eventual jacket reclamation is the customer obliged to submit a packing label of the boiler jacket. It is
placed on the cardboard in which the jacket is expedited.
The user is obliged to perform a regular control of the boiler – see chapter 9.
Failing to keep the mentioned instructions the warrants provided by the producer are not granted.
Each notice of defect must be made immediately after its finding always in written form and by a
phone agreement.
The grant does not apply for:
- Faults caused by improper assembly and improper attendance of the product and faults caused
by improper maintenance see chap. 9
- Faults and damage caused by failure to observe water quality in heating system see chap. no. 4.1
and 5.3 or by using the anti-freeze mixture
- Faults caused by failure to observe instructions stated in this manual
-Defects caused by a wrong assembly or incorrect operation of the product
-Damage of the product during transfer or other mechanical damage
-Defects caused by improper storage
The producer grants the right for changes performed within the frame of product innovation that may
not be included in this instruction.

17
Information for customer
Packaging identification
PE Plastic sacks, folie, corrugated board, iron and plastic fix
line
Assessment reference
Identification of principal materials used. Paper, Polyethylene, iron, wood
Part 1: Summary of assessment
Standard/Report Assessment requirement Claim Note
1.1 Prevention by source
reduction YES
1.2 Heavy metals and ensure below maximum permitted levels
for components
(CR 13695-1) YES
1.3 Other
noxious/hazardous
substances
ensure in compliance with
(ČSN 77 0150-2, EN 13428) YES
2 Reuse ensure reusability in all terms of the
standard for the functional packaging unit
(EN 13429) NO
3.1 Recovery by material
recycling ensure recyclability in all terms of the standard for the functional packaging unit
(EN 13430) YES
3.2 Recovery in the form
of energy ensure that calorific gain is achievable for the functional packaging unit
(EN 13431) YES Iron - NO
3.3 Recovery by
composting ensure compost ability in all terms of the standard for the functional packaging unit
(EN 13432) NO
NOTE
Conformity with EN 13427 requires affirmative responses to sections 1.1; 1.2; 1.3 and to at
least one of 3.1; 3.2; 3.3. In addition, where a claim of reuse is made section 2 should also
record affirmative responses.
Part 2: Statement of conformity
In the light of the assessment results recorded in part I above, this packaging is claimed to comply
with the requirements of EN 13427.

18

19
1x For the attention of the service organization VIADRUS a.s.,
Bezručova 300
735 81 Bohumín
The Warranty card and Certification of the quality and completeness for
the boiler VIADRUS U 22
Boiler serial number ..............................…………………. Boiler power ..............................
User (surname, name) …………………………………………………………………………………………
Address (street, town, ZIP code) ………………………………………………………………………………
Phone/Fax …………………………………………………………………………………………
The boiler corresponds to the requirements:
ČSN 07 0240 Warm-water and law-pressure steam boilers
ČSN 07 0245 Warm-water and law-pressure steam boilers. Warm-water boilers up to 50 kW output.
VIADRUS a.s. grants a warranty:
–For boilers 24 months after the boiler putting into operation, but maximum 30 months after the date it was
dispatched from the manufacturing factory.
–For boiler drum 5 years after the date its dispatch from the manufacturing factory.
Adjustment according to the instructions for the boiler operation and installation is performed by a
contractual service organization.
Completeness including the standard accessories and power adjustment according to the
“Instructions for operation and installation” is granted by the producer by a contractual service
organization.
The Warranty card is without filling up invalid.
Measured values Numerical value
Chimney draught (mbar)
Product of consumption temperature (°C)
The user confirms that:
•the adjusted boiler by a contractual service organization has not shown out any defect at the heat test
•has received „Instructions for the operation and installation” with a proper filled in Warranty card and the
Certification of quality
•has been introduced to the boiler operation and maintenance
…………………………………….. …………………………………….. ……………………………………..
Production date Stamp of the producer Checked by (signature)
…………………………………….. …………………………………….. ……………………………………..
Installation date Assembly company
(stamp, signature) User´s signature
…………………………………….. …………………………………….. ……………………………………..
Date of putting the boiler to the
operation Contractual service organization (stamp, signature) User´s signature

20
Appendix to the Warranty card for customer - user
Recording of performed warranty and after – warranty repairs and performance of regular product
check
Recording
date Performed operation Contractual service
organization
(signature, stamp)
Customer´s
signature