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Dear customer,  
We  thank  you  that  you  have  bought  the  VIADRUS  HERCULES  U  22  universal  boiler  thus  having 
shown your confidence in VIADRUS a.s. 
For you to get used to a correct way of handling your new product from the beginning please read at 
first this manual for its usage (first of all the chapter no. 8 – Boiler operation by user, chapter no. 9 – 
Maintenance  and  chapter  no.  11  –  Important  warnings).  Please  follow  the  undermentioned 
information  and  especially  those  regarding  the  prescribed  annual  controls  to  be  done  by  an 
authorized specialised firm, whereby a long-time and trouble-free boiler operation will be guaranteed 
to both your and our satisfaction. 

 

1. 

Manufactured boiler variants  

 

VIADRUS  HERCULES  U  22  boiler  is  a  universal  cast-iron  sectional  low-pressure  boiler  designated  for 
combustion of: 

Gaseous fuels (natural gas) and its brand name is VIADRUS HERCULES U 22 P 

Liquid fuels (fuel oil extra light – TOEL) and its brand name is VIADRUS HERCULES U 22 N 

 

In the purchase order you must specify the following data: 

 

Purchase order specification code 

VIADRUS HERCULES U 22 X X 

 
 
 
 
 
 
 
 
 
 
 

2. 

Boiler use and advantages  

 
The  boiler  design  you  have  received  is  designated  for  combustion  of  gaseous  fuels  and  its  brand  name  is 
VIADRUS  HERCULES  U  22  P  and  for  combustion  of  liquids  fuels  and  its  brand  name  is  VIADRUS 
HERCULES  U  22  N.  The  three-sectional  size  is  suitable  for  heat  sources  reconstruction  in  smaller  houses 
and leisure amenities. Bigger sizes comply with demands on heating the houses, shops, schools etc. 
The boiler is only made as a warm-water unit with natural and forced heating water circulation and working 
overpressure up to  400 kPa (4 bar). Before despatch the boiler is tested for tightness by applying  800 kPa  
(8 bar) test pressure; it stands the insulation and contact resistance tests.  

 

Boiler advantages: 

 

1.  A long service  life of cast-iron exchanger and 

all  other  parts  with  regard  to  the  quality  of 
used materials. 

2.  Efficiency of gas combustion 89 %. 

3.  The  reliability  of  regulation  and  security 

elements.  

4.  Simple operation and maintenance.  

5.  Low demand on chimney draught.. 

6.  Graduation  of  output  by  the  number  of 

sections. 

7.  Possibility  to  convert  the  solid  fuels  boiler  to 

gaseous or liquid fuels boilers or vice-versa.  

 

Fuel: 
P
: gas 
N: oil 

Number of sections: 
3: 
3 sectional design 
4: 4 sectional design 
5: 5 sectional design 
6: 6 sectional design 
7: 7 sectional design 
8: 8 sectional design 
9: 9 sectional design 
0: 10 sectional design 
 

Summary of Contents for HERCULES U 22

Page 1: ...VIADRUS HERCULES U 22 P N Manual for boiler operation and installation GB_2014_36 ...

Page 2: ...Positioning possibilities 10 6 Delivery and assembly 12 6 1 Delivery and accessories 12 6 2 Assembly procedure 13 7 Commissioning 16 7 1 Verification before commissioning 16 7 2 Boilers commissioning 16 7 3 Boiler conversion from gaseous or liquid fuels to the solid fuels and vice versa 16 8 Boiler operation by the user 17 9 Maintenance 18 10 Defects and their elimination 18 11 IMPORTANT WARNINGS ...

Page 3: ...iler design you have received is designated for combustion of gaseous fuels and its brand name is VIADRUS HERCULES U 22 P and for combustion of liquids fuels and its brand name is VIADRUS HERCULES U 22 N The three sectional size is suitable for heat sources reconstruction in smaller houses and leisure amenities Bigger sizes comply with demands on heating the houses shops schools etc The boiler is ...

Page 4: ...N S Electric input kW Max 0 1 Electric coverage IP 40 Environment basic AA5 AB5 ČSN 33 2000 1 ed 2 The values independent on the type of used central burner are shown in burner documentation Tab no 2 Thermal technical parameters of boiler designated for natural gas combustion Fuel efficiency 33 99 MJ m 3 air temperature 15 C and bar air pressure 1013 25 mbar Number of sections pc 3 4 5 6 7 8 9 10 ...

Page 5: ...sion and a heating water flange in the lower part a return water flange with a mouthpiece for draining and filling taps To the front section there are mounted closing plates serving for an easy boiler maintenance The lower closing plate is prepared for the pressure burner assembly For a better utilization of heat contained in combustion products there is installed a partition separating the combus...

Page 6: ...g tap 14 Well G 15 Check valve for the manometer 16 Boiler shell with insulation 17 Closing lid 18 Plug 19 Clip MEOS 20 Control box OS 03 Fig No 3 Diagram of boilers In the upper part of the rear section there is installed a clack valve of thermo manometer and a reservoir for thermostat and thermometer sensors In the lower part of smoke extension there is installed a cleaning cover The explosive f...

Page 7: ...meter a compound gauge serves for outlet water temperature and water pressure in system determination the thermostat serves for setting the heating water outlet temperature the main switch serves for switching on the boiler to get started The burner defect is signalled by lighting up the LED called burner fault Boiler overheating above the safe limit 90 C is signalled by lighting up the LED called...

Page 8: ...SAFETY THERMOSTAT H2 BT1 SIGNALLING BT2 SERVICE THERMOSTAT BT4 ROOM THERMOSTAT BOILER OUTSIDE CONTROL H3 BURNER DEFECT SIGNALLING X1 TERMINAL BOARD X10 BOILER CONNECTOR Fig no 5 Elementary wiring diagram of with OS 03 boxes BOX OUTSIDE CONTROL OUTSIDE CONTROL OUTSIDE CONTROL ...

Page 9: ... provisions of these standards The chimney must be resistant to combustion gases condensate otherwise it might be seriously damaged 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...

Page 10: ... Czech National Council on Fire Protection Act no 254 2001 Coll on Waters and Amendments to some acts the Water Act h oil storage ČSN 65 0201 Combustible liquids Premises for production storage and handling ČSN 65 7991 Oil industry products Fuel oils Technical requirements ČSN 73 0081 Corrosion protection in building industry ČSN 75 3415 Water protection against oil products Facilities for handlin...

Page 11: ...e Grade of reaction to fire Examples of building materials and products included in the reaction to fire Extract from EN 13501 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 uma...

Page 12: ...lug Js 6 4 blind 2 pcst Heating water flange DN 50 1 pc Return water flange DN 50 with a mouthpiece 1 2 1 pc Well of thermostat 1 pc Elbow Js 1 2 for filling and a drain tap 1 pc Sealing φ 85 x 60 x 3 2 pcs Set of fire clay lining Clip MEOS 4 pcs Shell coupling pins 4 pcs Nut M10 8 pcs Washer 10 5 10 pcs Plug 4 pcs Sheet metal screws ST 4 8 x 13 4 pcs Closing lid 1 pc Commercial technical document...

Page 13: ...on blind with plugs Js 6 4 8 Remove the upper and lower closing plate 9 Insert the fireclay lining and combustion chamber partition 10 The fireclay parts layout is shown in Fig no 3 and in tab no 5 and no 6 there is stated a breakdown of used fireclay blocks fillets and cast iron plates that make up the combustion space partition Put the rear fireclay block to the rear boiler wall Put longitudinal...

Page 14: ... Set and secure the upper part of OS 03 control box 8 Screw the brush into the handle sleeve 9 Filling the heating system with water Water for boilers and heating system filling must be clear and colourless with no suspended materials oil and aggressive chemicals Its hardness must correspond to ČSN 07 7401 and it is necessary to treat water in case its hardness is unsuitable Even heating the water...

Page 15: ...cs 4 Sheet metal screws ST 4 8 x 13 4 pcs 5 Insulation of shell back part 1 pc 6 Back part of shell 1 pc 7 Insulation of shell upper part 1 pc 8 Upper part of shell 1 pc 9 Clip MEOS 4 pcs 10 Plug 4 pcs 11 Closing lid 1 pc 12 Control box OS 03 1 pc Fig no 8 Boiler shell assembly ...

Page 16: ...o the chimney 7 2 Boilers commissioning 1 The installation burner assembly and its adjustment plus boiler commissioning together with the burner must be done by a burner supplier s service firm The service firm will give the user a training in operating the burner a manual for burner operation and will provide its guarantee and after guarantee repairs 2 Gas or fuel oil extra light TOEL connection ...

Page 17: ...perature position 3 If the boiler failure state occurs the signal lamp signalling the burner fault lights up in the boiler control panel In case of electricity network outage the burner is switched off and after the network voltage restoration the burner is restarted automatically 4 Safety thermostat unblocking If the boiler has been switched off by a safety thermostat the signal lamp signalling t...

Page 18: ...x 10minutes use a lower water pressure for spraying the convection surfaces repeatedly by applying a higher water pressure complete the convection surfaces cleaning remove thoroughly the impurities from the space of burner 6 Check the burner nozzle clogging In case of impurities clean it according to burner manufacturer s instructions 7 Mount back the closing plates and install the burner 8 Open t...

Page 19: ... the boiler room or during the works at which there is a temporary fire or explosion danger gluing the flooring paints using the flammable materials the boiler must be long enough before the works put out of operation 8 Don t put any objects made of flammable materials on boiler and within a distance smaller than the safe distance from it 9 It is necessary to install a safety valve for maximum ove...

Page 20: ...ding the shell the customer is obliged to submit the boiler shell plate positioned on the cardboard in which the shell is dispatched The manufacturer requires for the guarantee applicability In sense of Act no 458 2000 Coll and ČSN 38 6405 EN 1775 to carry out regularly once a year the check of natural gas or fuel oil extra light TOEL boilers The checks can only be done by an authorized organizati...

Page 21: ...kaging 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 ...

Page 22: ...22 ...

Page 23: ...rtificate for customer the user Record of accomplished guarantee and after guarantee repairs and regular annual product checks Record date Carried out activity Contracting service organization stamp signature Customer s signature ...

Page 24: ...VIADRUS HERCULES U 22 P N VIADRUS a s Bezručova 300 735 81 Bohumín CZ telefon 420 596 083 050 fax 420 596 082 822 e mail info viadrus cz www viadrus cz ...

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