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Setting the nominal output: 

1.  Put the boiler into operation.  

2.  For  orientation  measure  the  gas  pressure  on  the  gas  distributor  by  using  the  digital  manometer  or  

the U-tube. 

3.  Before the setting procedure itself let for a while stabilize the operation pressure conditions at the burner. 

4.  Connect the manometer (U-tube) to the measuring point of the output gas pressure  

5.  Connect the coil terminal connector of the High-Low valve. 

6.  By  using  the  nut  wrench  no.  8  turn  the  valve  external  adjusting  screw  for  setting  the  nominal  output. 

When  turning  clockwise  the  gas  overpressure  keeps  increasing  and  other  way  round  it  keeps 
decreasing.  

7.  After  the  adjustment  completion  check  the  correctness  of  set  values  after  having  switched  on  and 

switched off the terminal connector repeatedly several times.  

8.  Measure the gas flow on the gas meter; if it doesn’t correspond to the nominal output (see tab. no. 2) – 

set the gas pressure at the nozzle in a way making sure that the required gas flow will be achieved.  

9.  Put on the plastic protective cover on the High-Low coil. 

10.  Check the combustion purity by using the combustion gases analyser (NOx, CO). 

 

7.3.2  Heat output setting and adjusting at the boiler equipped with Honeywell 

electromagnetic gas valves for the sizes with 10, 12 and 15 sections 

 
Reduced output setting and adjusting: 

1.  Put the boiler into operation  

2.  Measure the gas inlet pressure which must be between 15 and 23 mbar. 

3.  Before the setting procedure itself let for a while stabilize the operation pressure conditions at the burner. 

4.  For orientation measure the gas pressure on the gas distributor by using the digital manometer or the U-

tube. 

5.  Remove the plastic cover from High-Low coils. 
 

 

Fig. no. 14 

Honeywell gas valves connection  

 

6.  Disconnect the coil terminal connector of the High-Low valve no.1 and 2. 

7.  Connect  the  manometer  (U-tube)  to  the  measuring  point  of  the  output  gas  pressure  on  the  valve  

VR 4601 QB 2001. 

8.  By using a 3.5 mm screwdriver regulate through the internal screw on both regulators the pressure value 

of a reduced output according to table no. 2. By turning clockwise the gas overpressure keeps increasing 
and other way round decreasing.  

9.  Measure the gas flow on the gas meter; if it doesn’t correspond to the nominal output (see tab. no. 2) – 

set the gas pressure at the nozzle in a way making sure that the required gas flow will be achieved.  

10.  Check the combustion purity by using the combustion gases analyser (NOx, CO). 

High – Low coil No. 2 
 
terminal connector of 
the elektromagnetic 
coils on valve no. 2 
 
valve no. 2 

High – Low coil no. 1 
 
terminal connector of the 
elektromagnetic coils on valve 
no. 2 
 
valve No.1 
 

Summary of Contents for G 90 Series

Page 1: ...Hercules U26 N vod k obsluze VIADRUS G 90 MANUAL FOR BOILER OPERATION AND INSTALLATION...

Page 2: ...ion 25 7 1 Checking activity before commissioning 25 7 2 Commissioning 25 7 3 Setting and regulation of the boiler heat output 25 7 3 1 Setting and regulation of the boiler heat output for 8 sectional...

Page 3: ...network module At request a delivery in a decomposed state is possible The accessories delivered at request are not included in the boiler basic price regulation A1 A4 according to the order specifica...

Page 4: ...hand side or from the right hand side it doesn t apply to the 8 sectional version 9 Possibility to connect the boiler in an cascade 10 Possibility to equip with an equitherm regulation 11 Two stage bu...

Page 5: ...mal output m 3 m 3 20 18 15 8 21 6 18 13 Volume of dry combustion gases actual at the minimum thermal output m 3 m 3 23 63 20 1 24 8 23 6 Emission values CO mg m 3 5 6 8 7 NOx mg kWh 33 33 27 23 Grade...

Page 6: ...t a part of which is the protective plate made of the stain steel The atmospheric burner composed of oval low emission burner tubes is made of the stain steel Individual tubes are mounted on the burne...

Page 7: ...7 Number of sections 8 10 12 15 L mm 995 1155 1315 1555 L1 mm 815 975 1135 1375 A mm 878 5 941 941 941 D mm 200 200 225 250 Fig no 2 The main dimensions of the boiler Gas inlet...

Page 8: ...8 1 boiler drum 2 boiler shell 3 regulation and safety elements 4 gas fitting 5 horizontal draught diverter 6 atmospheric burner Fig no 3 Boiler assembly...

Page 9: ...r one of four kinds of regulation or their combinations according to the ordering key stated in chapter no 1 1 The regulators are delivered in a separate package and in place of boiler installation th...

Page 10: ...mixing valves Other regulator characteristics are as follows the heating circuits can be set as independent two separate heating circuits or as dependent floor heating in combination with radiators a...

Page 11: ...tab no 2 setting to the given nominal heat output is done by the manufacturer It works in the regime of a nominal reduced heat output Fig no 4 VR 4601 QB 2001 with High Low coil reel and the output to...

Page 12: ...closing the ionisation circuit there will open the main valve for gas inlet into the main burner In case that the pilot burner hasn t ignited within the safety time of Ts 50 sec the automatics will cl...

Page 13: ...on electrode F1 Fuse 4 A F2 Fuse 2 5 A H1 Signalling Boiler under voltage H2 failure signalling H3 ionising failure signalling S1 Main power switch S2 Reduced rated output switch S3 Pushbutton RESET X...

Page 14: ...ibution box A1 Automatics Honeywell 4563B1011 F1 Fuse 4 A X1 0 Boiler s terminal plate Y1 Gas Valve Honeywell VR4601QB 2001 Z1 Anti interference element PS3 Minimal water level guard SP1 Minimal gas p...

Page 15: ...ation electrode F2 Fuse 2 5 A H1 Signalling Boiler under voltage H2 failure signalling H3 ionising failure signalling S1 Main power switch S2 Reduced rated output switch S3 Pushbutton RESET BT1 safety...

Page 16: ...lure signalling H3 ionising failure signalling S1 Main power switch S2 Reduced rated output switch S3 Pushbutton RESET X1 0 Boiler s terminal plate Y1 Gas Valve Honeywell VR4601QB 2001 Y2 Gas Valve Ho...

Page 17: ...s Honeywell 4563B1011 F1 Fuse 4 A X1 0 Boiler s terminal plate Y1 Gas Valve Honeywell VR4601QB 2001 Y 2 Gas Valve Honeywell VR4605QB 2002 Z1 Anti interference element PS3 Minimal water level guard SP1...

Page 18: ...onization electrode F2 Fuse 2 5 A H1 Signalling Boiler under voltage H2 failure signalling H3 ionising failure signalling S1 Main power switch S2 Reduced rated output switch S3 Pushbutton RESET BT1 sa...

Page 19: ...voltage H2 failure signalling H3 ionising failure signalling S1 Main power switch S2 Reduced rated output switch S3 Pushbutton RESET X1 0 Boiler s terminal plate Y1 Gas Valve Dungs MB ZRDLE 412B01S22...

Page 20: ...A1 Automatics Honeywell 4563B1011 F1 Fuse 4 A X1 0 Boiler s terminal plate Y1 Gas Valve Dungs MB ZRDLE 412B01S22 Z1 Anti interference element PS3 Minimal water level guard SP1 Minimal gas pressure gu...

Page 21: ...ization electrode F2 Fuse 2 5 A H1 Signalling Boiler under voltage H2 failure signalling H3 ionising failure signalling S1 Main power switch S2 Reduced rated output switch S3 Pushbutton RESET BT1 safe...

Page 22: ...commendations for polyethylene MOP up to and including 10 bar EN 12007 3 Gas supply systems Pipelines for maximum operating pressure up to and including 16 bar Part 3 Specific functional recommendatio...

Page 23: ...le both the pad and the bedding exceed the boiler ground plan on all sides by 15 mm 2 A safe distance from the flammable materials when installing and operating the boiler it is necessary to keep a sa...

Page 24: ...es invalid The heating systems with an open expansion tank make possible a direct contact between the heating water and the atmosphere At the period of the heating season the water expanding in the ta...

Page 25: ...the pilot burner In case that the ignition cycle has passed but the burner didn t catch fire there will light up the breakdown signalling on the network module see Fig no 18 If the ignition fails rep...

Page 26: ...electromagnetic gas valves for the sizes with 10 12 and 15 sections Reduced output setting and adjusting 1 Put the boiler into operation 2 Measure the gas inlet pressure which must be between 15 and 2...

Page 27: ...on the High Low coil 10 Check the combustion purity by using the combustion gases analyser NOx CO 7 3 3 Heat output setting and adjusting at the boiler equipped with Honeywell electromagnetic gas valv...

Page 28: ...a way making sure that the required gas flow will be achieved 12 The gas flow at the reduced output can be adjusted by the regulation nut fig no 16 13 Check the combustion purity by using the combust...

Page 29: ...ltage recovery in the electricity network the burner will start up automatically The failure is unblocked manually by means of unblocking pushbutton in the network module 7 Safety thermostat unblockin...

Page 30: ...se will close the fuel supply to the boiler The fuse unblocking can be done by user by means of unblocking pushbutton TS A repeated boiler start can only be done after cooling down the combustion gase...

Page 31: ...ount the cover draught diverters and the upper cover of the boiler shell put the boiler into operation During the boiler operation the agent reacts with the deposits and in form of combustion gases it...

Page 32: ...onductors and or a faulty electrode Check the electrodes condition and the connection between ignition conductor and the earth wire 4 Boiler doesn t light up the ignition electrode is sparkling the fa...

Page 33: ...he date it was dispatched from the manufacturing factory For boiler drum 5 years after the date its dispatch from the manufacturing factory For the validity of his guarantee the manufacturer requires...

Page 34: ...unit EN 13429 2000 NO 3 1 Recovery by material recycling ensure recyclability in all term sof the standard for the functional packaging unit EN 13430 2000 YES 3 2 Recovery in the form of energy ensure...

Page 35: ...35...

Page 36: ...36 Date of revision 45 2012 ND GB...

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