Viadrus ules U26 Specification sheet

Hercules U26
Návod k obsluze
V
IADRUS U 22 C/D
MANUAL FOR BOILER OPERATION
AND INSTALLATION

Contents: page
1. Usage and advantages of the furnace ........................................................................................................ 3
2. Technical data of the furnace VIADRUS U 22 ............................................................................................ 3
Section number .......................................................................................................................................... 3
3. Description................................................................................................................................................... 5
3.1 Construction of the furnace ................................................................................................................... 5
3.2 Regulating and security elements......................................................................................................... 5
4. Placing and installation.............................................................................................................................. 10
4.1 Regulations and instructions ............................................................................................................... 10
4.2 Placing possibilities ............................................................................................................................. 10
5. Order, delivery and assembly.................................................................................................................... 12
5.1 Order ................................................................................................................................................... 12
5.2 Delivery and accessories .................................................................................................................... 12
5.3 Assembly techniques .......................................................................................................................... 13
5.3.1 Boiler drum installation .................................................................................................................. 14
5.3.2 Jacket assembly............................................................................................................................ 15
6. Putting into operation – instructions for a contractual service organization .............................................. 21
6.1 Control operation before starting......................................................................................................... 21
6.2 Putting the furnace into operation ....................................................................................................... 21
6.3 Furnace transformation from „solid fuels“ to „gas and liquid fuels“ and retroactively ......................... 21
7. User’s furnace service ............................................................................................................................... 21
8. IMPORTANT NOTICE............................................................................................................................... 22
9. Maintenance .............................................................................................................................................. 23
10. Instructions for product liquidation after its operating life ........................................................................ 23
11. Warranty and defect liability .................................................................................................................... 24

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Dear customer,
thank you for buying the general – purpose VIADRUS HERCULES U 22 furnace and thus showing
belief in the company ŽDB GROUP, a.s., VIADRUS division.
At first read this operating manual (especially Chapter Nr.7 – User’s furnace 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 furnace - to your and our satisfaction - is secured.
The furnace VIADRUS U 22 is a general – purpose cast iron sectional low – pressure furnace intended
for burning of:
- solid fuels coke, anthracite, wood commercial marking VIADRUS U 22 C
wood (optionally coke and anthracite) commercial marking VIADRUS U 22 D
Burning of other materials such as plastic is unallowable.
1. Usage and advantages of the furnace
Two and three – sectional size of the furnace VIADRUS U 22 is appropriate for heat source
reconstruction in self – contained flats, for smaller residential and recreational facilities. Bigger sizes of the
furnace meet the requirements of heating the family houses, shops, schools, etc.
The furnace is produced as hot – water with natural and forced circulation of heat water and operational
overpressure to 800 kPa.
The VIADRUS U 22 D furnace is different from the VIADRUS U 22 C furnace version by its enlargement
of the stoke hole so that it is possible to burn even bigger clogs up to the average of 220 mm. By burning
wooden logs the heat work difficulty is considerably reduced and the service quality is increased. The
amount of ash is also substantially smaller and it is possible to further use it as fertilizer.
Advantages of the furnace:
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
8. Possibility of furnace transformation of burning of solid fuels to gas or liquid fuels or vice versa.
2. Technical data of the furnace VIADRUS U 22
Chart Nr.1 Dimensions, technical parameters of the furnace VIADRUS U 22 C
Section number pieces 2 3 4 5 6 7 8 9 10
Weight kg 198 218 252 282 312 347 377 417 448
Water space volume l 26,1 31,5 36,2 40,9 45,6 50,3 55,0 59,7 64,4
Firing chamber volume l 21 34 47 60 73 86 99 112 125
Firing chamber depth mm 149 244 339 434 529 624 719 814 909
Diameter of smoke socket mm 156 176
Furnace dimensions: - height x width
(version with the box) mm 1007,5 x 545
Furnace dimensions: - height x width
(version without the box) mm 989,5 x 545
- depth mm 592,8 688,8 784,8 880,8 976,8 1072,8 1168,8 1264,8 1360,8
Water operating overpressure kPa 400
Testing water overpressure kPa 800
Hydraulic loss - See picture Nr.1
Recommended heat water operating
temperature °C 60-90
Noise level dB Not exceeding the level of 65 dB (A)
Minimum chimney draught Pa 12 14 16 18 20 22 24 26 28
Furnace connections - heat water DN 50
- returnable
water
DN 50

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Chart Nr.2 Dimensions, technical parameters of the furnace VIADRUS U 22 D
Section number pieces 4 5 6 7 8 9 10
Weight kg 252 282 312 347 377 417 448
Water space volume l 36,2 40,9 45,6 50,3 55,0 59,7 64,4
Firing chamber volume l 47 60 73 86 99 112 125
Firing chamber depth mm 339 434 529 624 719 814 909
Lightness of the stove - pipe mm 156 176
Furnace dimensions: - height x width
(version with the box) mm 1007,5 x 545
Furnace dimensions: - height x width
(version without the box) mm 989,5 x 545
- depth mm 750 845 940 1035 1130 1225 1320
Water operating overpressure kPa 400
Testing water overpressure kPa 800
Hydraulic loss - See picture Nr.1
Recommended heat water operating
temperature °C 60-90
Noise level dB Not exceeding tle level of 65 dB (A)
Minimum chimney draught Pa 16 18 20 22 24 26 28
Furnace connections - heat water DN 50
- returnable water DN 50
Chart Nr. 3 Heat - technical parameters of the furnace at COKE and ANTHRACITE burning
granularity 30 – 60 mm heating value: 26 - 30 MJ. kg-1
Section number 2 3 4 5 6 7 8 9 10
Rated power kW 11,7 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 1,89 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 1,98 3,0 3,95 4,93 5,92 6,9 7,88 8,87 9,85
Heating value – anthracite MJ. kg-1 28,31
Product of consumption
temperature °C max. 280
Chart Nr. 4 Heat technical parameters of the furnace at WOOD burning
humidity 15 - 25 % heating value: 12 - 15 MJ. kg-1
Section number 4 5 6 7 8 9 10
Rated power kW 20 25 30 35 40 45 49
Efficiency % 75
Orientation fuel consumption kg.h-1 6,4 8,0 9,59 11,19 12,79 14,39 15,67
Heating value MJ. kg-1 15,01
Product of consumption
temperature °C max. 320
0
50
100
150
200
250
300
15 20 25 30 35 40 45 50 55 60
Fig. Nr. 1 Hydraulic loss of the boiler drum
Pa
Power in kW

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3. Description
3.1 Construction of the furnace
The main part of the furnace 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 furnace 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 furnace.
The back section of the furnace has a smoky chimney – pot and a heat water flange in the upper part,
and a returnable water flange with a socket for impregnating and clearing plug. 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 seven to ten – sectional size of the VIADRUS U 22 C furnace two tapes of medium sections are used:
at the front part of the furnace the sections are without a molding and 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 furnace, i.e. by the back path in smoky draughts it is perfectly taken advantage
of the product of consumption heat.
Number of sections without and with a molding is mentioned in the following chart:
Chart Nr.5 Medium sections of the VIADRUS U 22 C furnace
Size of the furnace in sections 2 3 4 5 6 7 8 9 10
Medium section with a molding - 1 2 3 4 4 5 5 6
Medium section without a molding - - - - - 1 1 2 2
At the VIADRUS U 22 D furnace three types of medium sections are used: in the front part of the furnace
(except the 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
furnace, i.e. by the back path in smoky draughts it is perfectly taken advantage of the product of
consumption heat.
Chart Nr. 6 Medium sections of the VIADRUS U 22 D furnace
Size of the furnace in sections 4 5 6 7 8 9 10
Medium section with a recess - 1 1 1 1 1 1
Medium section with a molding 2 2 3 4 5 5 6
Medium section without a molding - - - - - 1 1
3.2 Regulating and security elements
The smoky flap of the smoky chimney – pot regulates the climb of the product of consumption from the
furnace to the chimney. It is regulated with the handle with a rod in the upper left part of the furnace next to
the stoker hole.
Stifling of the ash door regulates the inflow of the combustion air under the grate of the furnace. It is
regulated by the draught governor or manually with an adjusting screw of the stifling.
The air rose of the stoker door serves for carrying the secondary air to the burning space. To control the
rose it is necessary with respect to the higher surface temperature of the stoker door to use an instrument
that is part of the delivered tools.
The cleaning cover of the smoky chimney – pot located in its bottom part serves for cleaning the
embedded waste product caused by burning.
There are barriers of the smoky channel between the front and medium sections above the stoker hole
of the furnace VIADRUS U 22 C. It serves for reducing the draw – away cross - section and for a better

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utilization of the product of consumption at the furnaces of smaller power (2 – 5 sectional). They are used
with a various cross – section width according to the sizes of the furnaces in conformity with this chart:
Chart Nr.7 Barriers of the smoky channel of the VIADRUS U 22 C furnace
Furnace section
number (pieces) Cross – section of the smoky channel width (mm) Barrier number (pieces)
2 12 2
3 24 2
4 36 2
5 48 2
A thermomanometer in the control box serves as an associated device for measuring the temperature of
the heat water and water pressure in the heat system. The sump of the thermomanometer sensor is located
in the upper part of the back boiler section.
1. Front section U 22C
2. Middle section with a strip
3. Rear section
4. Plug
5. Insert
6. Anchor bolt
7. Sealing
8. Clack valve of the thermomanometer
9. Thermostat well
Fig. no. 2 Diagram of VIADRUS HERCULES U 22 Cboiler drum

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1. Front section U 22D
2. Middle section with a cutout
3. Middle section with a strip
4. Rest section
5. Plug
6. Insert
7. Anchor bolt
8. Sealing
9. Clack valve of the thermomanometer
10. Thermostat well
Fig. no. 3 Diagram of VIADRUS HERCULES U 22 D boiler drum

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1. Boiler drum complete with valves
2. Complete boiler jacket according to the given size
3. Heating water flange
4. Return water flange
5. Control box with s thermomanometer
6. Tow bar
7. Slant bushing
8. Suspension pin
9. Sealing Ø 90 x 60 x 3
10. Choker screw
11. Label of smoke flap control
12. Plastic ball M10
13. Front draught controller
14. Filling and draining cock
15. Bushing HEYCO
16. Blind flange 19
17. Blind flange 15,9
18. Washer 10,5
19. Nut M10
20. Washer 5,3
21. Screw M5 x 12
22. Lock 2,5 x 20
Fig. no. 4 Assembly of VIADRUS HERCULES U 22 boiler with the box

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1. Boiler drum complete with valves
2. Complete boiler jacket according to the given size
3. Heating water flange
4. Return water flange
5. Draw bar
6. Slant bushing
7. Suspension pin
8. Sealing Ø 90 x 60 x 3
9. Choker screw
10. Label of smoke flap control
11. Plastic ball M10
12. Front draught controller
13. Filling and draining cock
14. Thermomanometer
15. Bushing HEYCO
16. Blind flange 19
17. Blind flange 15,9
18. Washer 10,5
19. Nut M10
20. Lock 2,5 x 20
Fig. no. 5 Assembly of VIADRUS HERCULES U 22 boiler without the box

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4. Placing and installation
4.1 Regulations and instructions
The furnace 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
Ca2+ 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 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 73 6660 House water plumbing
4.2 Placing possibilities
The VIADRUS U 22 furnace is approved for installation in non – residential spaces (for example –
(cellar, corridor, etc.)
Section number 2 3 4 5 6 7 8 9 10
A [mm] 360 455 550 645 740 835 930 835 930
Fig. Nr. 6 Bedding dimensions

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Furnace placing with regard to fire regulations:
1. Placing on floor of flame resistant material (Pic.6)
-furnace to be put on a flame resistant backing exceeding the furnace platform over 20 mm at sides
and only on the boiler drum depth.
-if the furnace is situated in a cellar we recommend to place it on a bedding of minimum 50 mm
height.
2. Safety distance from the flammable materials
-at installation and even service of the furnace it is necessary to keep a safety distance of 200 mm
from the flammable materials of flammability levels of B, C1 and C2 (according to ČSN 06 1008)
-for easy flammable materials of flammability level of C3 that quickly burn and burn themselves even
after removing the emblazing source (such as paper board, cardboard, asphalt and tar boards, wood
and wood – fibre boards, plastic materials, floor coverings) the safety distance is doubled to, i.e. for
400 mm
-the safety distance is necessary to be doubled even in case when the flammability level of the
building material is not proved
Chart Nr. 8 Flammability levels of building materials and products
Flammability level of
building materials and
products
Building materials and products included in flammability level
(selection from EN 13 501-1)
A– fire - resistant granite, sandstone, concrete, bricks, ceramic tiles, mortars, fire plasters, ...
B– hard - flammable acumin, isumin, cement – bonded board, lignos, boards and basalt felts, boards
out of fibreglass, ...
C1– heavily - flammable beech wood, oak, hobrex boards, plywoods, wersalite, formica, sirkolit, ...
C2– medium - flammable pine wood, larch, spruce, wood chip and cork boards, rubber floor coverings, ...
C3– easily - flammable asphalt board, wood–fibre boards, wood–pulp materials, polyurethane,
polystyrene, polyethylene, PVC, ...
The furnace placing with respect to the
necessary handling space:
-basic surroundings of AA5/AB5 according to
ČSN 33 2000-3
-handling space of minimum 1000 mm in front
of the furnace must be maintained
-a minimum distance of 400 mm between the
back part of the furnace and the wall
-to maintain space for access to the back part
of the furnace 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 furnace
or to unload it beside the furnace in the
distance smaller than 400 mm
-it is disallowed to store fuel between two
furnaces in a boiler room
-the producer recommends to keep distance of
minimum 1000 mm between the furnace and
fuel or to place the fuel to a another room than
that where the furnace is installed
Fig. Nr. 7 Furnace 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) Furnace design - VIADRUS U 22 C furnace
- VIADRUS U 22 D furnace
2) Furnace size.
3) Demands on optional accessories.
5.2 Delivery and accessories
The VIADRUS U 22 furnace 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 hole. The furnace 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 for the VIADRUS U 22 furnace:
•cleaning tools (hook, brush with shaft, point, hanger)
•control box 1 piece
•thermomanometer 1 piece
•impregnating and clearing plug Js 1/2“ 1 piece
•draught regulator complete 1 piece
•closure Js 6/4“ 2 pieces
•rod with a control handle of the
smoky flap 1 piece
•control label of the smoky flap 1 piece
•stifling screw 1 piece
•connecting pin of the jacket 4 pieces
•fan-shaped washer 5 4 pieces
•nut M5 4 pieces
•washer 10,5 8 pieces
•nut M10 8 pieces
•flexible pins 3 x 26 1 piece
•split pin 2,5 x 32 1 piece
•washer 10,5 3 pieces
•bushings HEYCO 2 pieces
•blind flanges 6 pieces
•screws into metal C 4,8 x 13 4 pieces
•flange of heat water DN 70 1 piece
•flange of returnable water DN 70 with a socket Js 1/2“ for impregnating and clearing plug 1 piece
•sealing φ90 x 60 x 3 2 pieces
•operating key 1 piece
•hook 2 pieces
•socket 8 mm 2 pieces
•boiler operation and installation manual

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5.3 Assembly techniques
Fig.no. 8 Connecting dimensions of VIADRUS HERCULES U 22 boiler without the control box
Fig.no. 9 Connecting dimensions of VIADRUS HERCULES U 22 boiler with the control box

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5.3.1 Boiler drum installation
1. Put the boiler drum on an embedding.
2. Put a sealing φ90 x 60 x 3 on the upper flange part of the back section and fix the flange of the heat
water. The flange to be welded to the distribution of the heat water in advance.
3. Put a sealing φ90 x 60 x 3 on the bottom flange part of the back section and fix the flange of the
returnable water with a socket for impregnating and clearing plug. The flange to be welded to the
distribution of the returnable water in advance.
4. An elbow with an impregnating and clearing plug to be screwed to the flange socket of the returnable
water after connection of the furnace to the heat system
5. To put the stove – pipe to the smoky chimney - pot and penetrate it into the chimney hole
6. To screw the draught controller to the hole in the upper part of the front section
7. Two holes with a Js 6/4“ thread in the front section to blind with Js 6/4“ closures
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
Fig. Nr. 10 Boiler drum installation

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5.3.2 Jacket assembly
Mounting of the side part of the jacket and the rear part of the jacket
1. Remove the jackets from the cardboard cover.
2. Put the consoles 1 (1) and 2 (4) on the thread of the right upper anchor screw and screw them by
means of two nuts M10 (6) and two washers 10,5 (5) - (see Fig. no. 11).
3. Put the consoles 1 (1) and 2 (4) on the thread of the left upper anchor screw and screw them by means
of two nuts M10 (6) and two washers 10,5 (5) - (see Fig. no. 11).
Fig. No. 11 Assembly of jacket consoles
4. Mount two connecting plugs (2) on the right side part of the jacket (1) and then insert the insulation.
Put the jacket on the lower anchor bolts and connect upper part with consoles 1 and 2 by means of
two screws M5 x12 plus two washers ,3 – see Fig. no. 12.
Fig. No. 12 Right side part of the jacket
1. Console 1 assembly
2. Washer 10,5
3. Nut M10
4. Console 2 assembly
5. Washer 10,5
6. Nut M10
1. Side part of the jacket
2. Connecting plug

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5. Mount two connecting plugs (5), into the left side part of the jacket (1), insert the bushings (2, 3), then
insert the draw bar of the smoke flap control (4) and the insulation. Put the jacket on the lower anchor
bolts and connect the upper part with consoles 1 and 2 by means of two screws M5 x12 and two
washers 5,3 – see Fig. no. 13.
Fig. No. 13 Left side part of the jacket
6. Mount the insulation of the rear part of the jacket (9 – Fig.no.15; 14 – Fig.no.18) and screw to the side
parts of the jacket by means of screws ST 4,2 x 9,5 (10 – Fig.no.15; 15 – Fig.no.18).
Mounting of the upper part of the jacket in case of boiler without the control box (see Fig.no.14):
1. Mount four spring clips (2) on the upper part of the jacket (1) and insert the thermomanometer (8 –
Fig.no.15).
Fig.no.14 Upper part of the jacket in case of boiler without the control box
2. Insert the thermometer sensors into thermometer well and screw the manometer sensor into the
manometr well. .
3. Insert the insulation into the upper part of the jacket and put the whole assembly on the boiler. .
1. Upper part of the jacket
2. Spring clip
1. Side part of the jacket
2. Bushing HEYCO
3. Slant bushing
4. Draw bar of the smoke flap
control
5. Connecting plug

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1. Right side part of the jacket
2. Screw M5 x 12
3. Washer 5,3
4. Left side part of the jacket
5. Screw M5 x 12
6. Washer 5,3
7. Upper part of the jacket
8. Thermomanomater
9. Rear part of the jacket
10. Screw ST 4,2 x 9,5
11. Bushing HEYCO
12. Slant bushing
13. Blind flange 15,9 (3 ks)
14. Blind flange 19 (1 ks)
Fig. no. 15 Jacket assembly of the boiler without the box

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Mounting of the upper part of the jacket in case of the boiler with the control box(see Fig.no.16):
1. Connect the front and rear part of the lower part of the control box by means of two consoles (2) and four
screws M5 x 10 (3).
2. By means of four screws M5 x 12 screw the lower part of the control box to the upper part of the jacket
(1 – Fig. No. 17).
3. Insert the thermomanometer and slip the capillaries through the hole in the lower part of the control box.
Insert the thermometer sensors into the thermometer well and screw the manometer sensor into the
manometer well..
4. Insert the insulation into the upper part of the jacket and put the whole assembly on the boiler.
5. Put and screw the upper part of the control box (5) by means of four screws ST 4,2 x 9,5.
6. Complete the smoke flap kontrol according to Fig. No.. 19
Fig. no. 16 Mounting of the control box
Fig. no. 17 Upper part of the jacket in case of the boiler with the control box
1. Upper part of the jacket
2. Spring clip
1 Lower part of the control box
2 Console of the control box
3 Screw M5 x 10
4 Bushing SB 2-25-29
5 Upper part of the control box
6 Screw ST 4,2 x 9,5
7 Thermomanometer

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1. Right side part of the jacket
2. Screw M5 x 12
3. Washer 5,3
4. Left side part of the jacket
5. Screw M5 x 12
6. Washer 5,3
7. Upper part of the jacket
8. Košer part of the control box
9. Screw M5 x 12
10. Washer 5,3
11. Upper part of the control box
12. Screw M 5 x 12
13. Thermomanometer
14. Rear part of the jacket
15. Screw ST 4,2 x 9,5
16. Bushing HEYCO
17. Slant bushing
18. Blind flange 15,9 (3 ks)
19. Blind flange 19 (1 ks)
Fig. no. 18 Jacket assembly of the boiler with the box
Mounting of the draw barof smoke flap control
1. Complete the smoke flap control according to Fig.no.19.
2. Fasten the smoke flap control draw bar (2) to the smoke flap (1) by means of lock 2,5 x 20 (3).
3. Screw the plastic ball M10 (4) to the front part of the draw bar
4. Stick the label of smoke flap control.

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1 – Smoke adapter with the smoke flap
2 – Smoke flap control draw bar
3 – Lock 2,5 x 20
4 – Plastic ball M10
5 – Screw of choker
6 – Suspension plug
7 – Draught controller
8 – Label of smoke flap control
Fig. no. 19 Smoke flap control
Draught controller
The instructions for the draught controller setting are given in the manual attached to the particular controller.
Filling of the heat system with water:
Water for filling of the furnace 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
furnace 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 furnace to
prevent section cracking. After filling of the furnace 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.