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General information

7

APPLIANCE DESCRIPTION

Steam boilers 

ICI CALDAIE S.p.A.

 

SIXEN

 are monobloc appliances operating automatically.

The horizontal combustion chamber is with flame inversion and the tube bundle is complete with helical turbulators.
The single front door is thermally insulated with refractory materials and is mounted on adjustable hinges, easily opened without 
having to remove the burner; it is equipped with visor for flame control.
The smoke box is fixed with bolts to the back of the generator. It is equipped with smoke duct fitting, cleaning door and can be 
dismantled.
The body is thermally insulated with high density rock wool mat, protected with stainless steel panels.
They are equipped with water side inspection opening (flanged hatch - no.2 from model 2500).
They use a single control panel in which the entire electrical wiring converges.
The appliance rests on a carbon steel profile base that ensures its stability.
Steam boilers 

SIXEN

 are certified both for liquid and gaseous fuels for steam production from 350 to 5000 kg/h at high pressure 

(12-15 bar).

STRUCTURE

2

N3 N1 14

Mod. 2500÷5000

5

6

N7

16 1

10

4

9

12

13

8

2

3

3

N6

6

N9

7

5

7

N7*

17

17

N10

N5
15

N4

19

21

24

23

N2

N2

N8

N11

18

18

22

22

20

Electrical panel

Regulation pressure switch (no.2 
pressure switches only for EXP 
versions)

Block pressure switch

Pressure gauge

1st safety level probe (minimum)

2nd safety level probe (minimum)

Level adjustment probes (start/stop)

Level indicator

Level indicator discharge

10 

Front door

11 

Level test valves

12 

Flame control warning light

13 

Burner application plate

14 

Steam inlet valve

15 

Check valves

16 

Inspection hatch

17 

Safety valves

18 

Supply filter

19 

Rear smoke chamber

20 

Chimney fitting

21 

Cleaning door

22 

Electric feed pump (no.2 electric 
pumps only for EXP versions)

23 

Globe valve

24 

Drain valve

N1

  Steam inlet

N2

 Supply

N3

 Instruments fitting (mod.  350 ÷ 

2000 )

N4

  Boiler drain

N5

  Safety valve(s) fitting

N6

  Fitting of safety level second probe

N7

  Maximum level fitting

N7*

 Maximum level fitting (mod.  1000 

÷ 2000 )

N8

  Salinity control fitting

N9

  Probe holder cylinder

N10

 Safety valve drain

N11

 Lower inspection point

NOTE

Drawing, legend and data refer to standard models. For specific models refer to the supplied accessory manual.

For practical needs, the electric panel for models SIXEN 350÷800 vers. IT and SIXEN 350÷1350 vers. EXP is installed on the left, while 
for models SIXEN 1000÷5000 vers. IT and SIXEN 1700÷5000 vers. EXP is installed on the right. The drawing shows an example of 
steam boiler with panel on the right.

Summary of Contents for SIXEN 1000

Page 1: ...SIXEN_350_5000_EN Ed 06 07 2018 EN Low pressure reverse flame steam boiler SIXEN INSTALLATION USE AND MAINTENANCE MANUAL ...

Page 2: ...el Installation 17 Product receipt 18 Handling 19 Installation room 19 Positioning 19 Room ventilation 20 System cleaning 20 Hydraulic connections 20 Flue exhaust 21 Front door opening 21 Door opening reversal to the right 22 Front door adjustment 22 Door adjustment opening on the right 22 Turbulator assembly 23 Burner assembly 23 Electrical connections 24 Loading and supply of the generator syste...

Page 3: ... SIXEN EXP 1000 86241004 SIXEN EXP 2000 86242004 SIXEN EXP 3500 86243504 SIXEN EXP 500 86240504 SIXEN EXP 1350 86241354 SIXEN EXP 2500 86242504 SIXEN EXP 4000 86244004 SIXEN EXP 650 86240654 SIXEN EXP 1700 86241704 SIXEN EXP 3000 86243004 SIXEN EXP 5000 86245004 SIXEN EXP 800 86240804 SIXEN 15 bar SIXEN 350 86250350 SIXEN 1000 86251000 SIXEN 2000 86252000 SIXEN 3500 86253500 SIXEN 500 86250500 SIX...

Page 4: ...e attention during handling and installation Periodically check the condition of the same accessories exclusion of fractures Once installation is completed check the intervention of the safety valve by carrying out a preventive hydraulic test at the PT pressure indicated on the ID plate Make sure the safety level switch is working properly in accordance with the contents of the technical manual su...

Page 5: ...d contained fluid PROHIBITIONS d IT IS FORBIDDEN Operate electrical devices or appliances such as switches household appliances etc if you smell fuel or unburnt materials In this case ventilate the room by opening doors and windows close the fuel shut off device Perform any technical or cleaning intervention before disconnecting the appliance from the electrical power supply and wearing the Person...

Page 6: ...is properly installed and adjusted and the presence of ventilation openings in the thermal power plant are compliant with the regulations in force IDENTIFICATION Each SIXEN steam generator is identified by two different data plates Boiler body data plate it is positioned below the ICI CALDAIE logo screwed to the upper covering of the front plate this plate bears the significant data of the boiler ...

Page 7: ...N4 19 21 24 23 N2 N2 N8 N11 18 18 22 22 20 1 Electrical panel 2 Regulation pressure switch no 2 pressure switches only for EXP versions 3 Block pressure switch 4 Pressure gauge 5 1st safety level probe minimum 6 2nd safety level probe minimum 7 Level adjustment probes start stop 8 Level indicator 9 Level indicator discharge 10 Front door 11 Level test valves 12 Flame control warning light 13 Burne...

Page 8: ...0 280 330 320 370 320 370 350 400 350 400 370 420 370 420 420 470 420 470 480 530 480 530 480 530 Øb mm 225 225 225 225 280 280 320 320 360 360 360 400 400 Øc mm 250 250 300 300 350 350 400 400 450 450 500 550 600 tb ØxP 1 mm 36x1220 36x1220 36x1500 36x1500 36x1220 36x1500 36x2000 36x2000 48x2400 48x2700 48x2700 48x2700 48x2700 tb 1 n 20 26 30 40 40 58 64 72 74 74 92 102 114 Attachments Descriptio...

Page 9: ...lcapacity kW 1514 1893 2271 2650 3028 3786 Efficiencyat100 ref P C I 1 90 90 90 90 90 90 Pressuredropsonexhaustside mbar 10 6 5 9 9 10 11 Ratedpressure bar 12 15 12 15 12 15 12 15 12 15 12 15 Min maxoperatingpressure bar 12 bar version 8 11 5 bar 15 bar version 12 14 Totalcapacity l 3050 3380 4020 5000 6950 7400 Capacityatlevel l 2300 2490 2825 3600 4800 5200 Evaporating surface m2 3 14 3 43 4 12 ...

Page 10: ...m generator flow rate back pressure in combustion chamber considering also the possible resistance draught of the smoke duct the length of the combustion head must be adequate to the penetration into the combustion chamber provided by ICI and shown in the table the length and shape of the flame must be suitable to the flame inversion combustion chambers The burner manufacturers have this informati...

Page 11: ...tions safety protection and control measures adopted a specific declaration prepared in accordance with art 2 of the Presidential Decree of 20 October 1998 no 403 certifying that the installation has been carried out in compliance with the operating manual the verification report where required a list of components operating under viscous flow regime or subjected to cycle fatigue if any The safety...

Page 12: ...ed the other end closed and free to move is connected to the index by a toothed sector lever system The pressure gauge is mounted on a three way valve that allows performing the following operations Communication between generator and pressure gauge normal operating position Communication between pressure gauge and the outside position needed to purge the siphon Communication between generator pre...

Page 13: ... condensate Drain must take place in the atmosphere direct the valve so as not to harm people or damage property Interception valves must not be provided The exhaust pipe must be designed in such a way that any low temperatures do not create ice that ob structs the outlet N B Bracket at no more than 1 m away m IMPORTANT The operation of the safety valves is sensitive to pressure losses that occur ...

Page 14: ... is calibrated at a higher pressure compared to the maximum one of the pressure transmitter but always lower than the opening pressure of the safety valve The safety pressure switch intervenes in case of steam pressure regulator failure adjustment pressure switch or pressure transmitter and permanently stops the burner 2 1 5 6 4 4 3 1 Sealed anti tampering cap 2 Polyamide cover 3 Stainless steel b...

Page 15: ...generator pressure and keeps it within the preset value Instructions for calibration The electric switch has three screws 1 2 4 from left to right Upon reaching the set pressure the contact 1 2 is switched into contact 1 4 Pressure switch calibration Rotate the knob 1 until setting the index of the scale 2 to the pressure value at which you wish the burner to restart Remove the cover of the pressu...

Page 16: ...ure Maintenance must be carried out when The crystal looses part of its transparency partially opaque signs of internal roughness due to erosion or corrosion as it involves loss of geometry and reading becomes difficult Minimal leaks from the gaskets or shut off groups are also noticed AUTOMATIC LEVEL REGULATOR AND SAFETY LEVEL SWITCH The detection and control principle of the level is based on th...

Page 17: ...or insulation The control panel contains the following documentation declaration of conformity use and maintenance manual safety valve certificate with declaration of conformity and use and maintenance manual feed pump characteristic curve electrical diagram m IMPORTANT The instruction manual is an integral part of the appliance and so MUST be carefully read before installing and commissioning the...

Page 18: ...he SIXEN steam generator must be handled using means adequate to the size and weight of the appliance using the provided lifting eyebolts a ATTENTION The Personal Protective Equipment required by current legislation must be used ...

Page 19: ...rs to safely carry out the running control and maintenance of all installed components consider the possible the need to replace components that fail over time A P2 90 min 600 mm NO A P2 see Size and fittings m IMPORTANT A space is necessary at the front of the generator at least equal to the length of the tube bundle to allow the extraction of the turbulators to clean the pipes and possibly repla...

Page 20: ...e sure that the drains of the generator safety valves have been connected to a drain well in order to avoid that in case of intervention the rooms are flooded Make sure that the water and heating system pipes are not used as earthing point of the electrical system The air must be filtered with 25 µm mesh m IMPORTANT ICI CALDAIE S p A is not liable for any harm to people animals or property damage ...

Page 21: ...7 of the door DOOR WITH WRENCH FERRULES HINGE SIDE a DANGER In models equipped with wrench adjustable ferrules 8 these must always be mounted on the hinges to prevent the door from being accidentally opened through the lever 9 Proceed as follows to reverse the opening direction of the door screw the left perforated ferrules 1 so that the door seal gasket is pressed in the same way as the right par...

Page 22: ... on the ferrule 7 to adjust the distance depth wise screw the nuts 6 and block the conical washers on the mechanical tubes a DANGER When cross changing ferrules always make sure that the other two ferrules are fastened so that they hold the door Check the proper adjustment in depth ensuring that the door manually pushed up to the stop plate naturally returns remaining ajar This is to ensure the hi...

Page 23: ...ECTIONS The generators are equipped with electrical panel IP 55 protection rating complete with all connections to the various generator components already made in the factory The panel model is determined by the version of the ordered generator and the wiring diagram specific and detailed is present inside the panel The installer connections must be made by professionally qualified personnel in c...

Page 24: ...nformation of the degasser pump feed tank connection pipe and on the features of the pump itself refer to the pump manual a ATTENTION The oxygen dissolved in the water corrodes the boiler Refer to the maximum allowed values indicated in the relevant section of the technical manual Follow the table below to avoid pump cavitation problems DEGASSER TYPE Water supply temperature C Head on the intake m...

Page 25: ...ould be provided according to table 5 2 c At operating pressure 1 bar a maximum total hardness of 0 05 mmol l must be acceptable d Instead of respecting this value with intermittent operation or operation without deaerator in case of agents forming the film and or excess of oxygen the additive must be used e Organic substances are generally a mixture of various different compounds The composition ...

Page 26: ... generator water is 5 μS cm d If treatment with coordinated phosphate is used considering all other values higher concentrations of PO4 are acceptable e Organic substances are generally a mixture of various different compounds The composition of such mixtures and the behaviour of their individual components under the generator operating conditions are difficult to predict Organic substances can be...

Page 27: ... rotor rotates freely the rotation direction should be correct indicated in the rear side of the motor place the pump selector at AUT and check that there is no consent to start the burner before the water has reached the minimum level check that the pump stops when the water reaches the maximum level visible in the glass indicator press for at least 10 seconds the reset button of the water safety...

Page 28: ...rious corrosions for the generator often occur during the stop periods The operations to be carried out to store the generator correctly essentially depend on the duration of the downtime When the generator needs to be stopped for long periods dry storage can be done When the stops are for short periods or when the generator is used as a spare and must start running in a short amount of time a wet...

Page 29: ...enance bearings mechanical seal check the wear of the drain valves replace them if necessary PERIODIC VERIFICATIONS The frequency of verifications is shown in the table It MUST be strictly observed Observation and tests 6 hours 1 day 1 week 1 month 3 months 6 months 12 months Safety valves O T 9 Level indicators T 4 TDS BWD Unloading devices if present T 5 Shut off valves O T 10 Water load control...

Page 30: ...ust be performed by qualified personnel T 15 Bench check of the safety devices Verifications must be performed by qualified personnel a ATTENTION The electronic level relays inside the electrical panel must be replaced after 8 years of operation as they have reached the end of their life span METHODS FOR CHECKING THE SAFETY DEVICES CHECKING OF THE MINIMUM LEVEL SAFETY LEVEL SWITCHES Stand in front...

Page 31: ...k for any build up corrosion and other potential sources of danger pertaining to the feed water It is necessary to remove the deposits through mechanical or chemical action and use suitable tools to ensure that the actual thickness of the internal parts is not affected by corrosion Any pockmark or other type of corrosion must be scraped and cleaned with an iron brush until the metal is exposed Lea...

Page 32: ...panel If the problem is solved permanently replace the faulty relay Level adjustment probes short circuit Disassemble the adjustment probes to visually check the ceramic insulation Pump cavitation Head height difference between the collection vessel level and the pump insufficient in relation to the water temperature Pump intake filter cleaning Reduce resistance of the duct between collection vess...

Page 33: ...ent back to a web page on which to register the data of your appliance and system by completing the indicated spaces Once registered authenticate your e mail address by clicking on the link that will be sent by e mail to the provided inbox An additional e mail will then be received with the credentials to access all services specifically developed by ICI CALDAIE S p A for those who will register t...

Page 34: ...r in order to ensure its correct operation 2 pump modulating feed Inverter With this system the level in the boiler is adjusted continuously by a PID controller that controls the rotation speed of the feed pump that is equipped with inverter The water flow rate is constantly adjusted to steam request thus avoiding the cyclical steam production that can be checked with level controls of the on off ...

Page 35: ...ency and duration of the purges must be set by the user according to the characteristics of the generator water as indicated in the technical manual of the generator The system requires compressed air GSS 72 1 72h global safety system for BX 600 BNX 1000 SIXEN 2000 and GSX 2000 generators GSS 72 1 global safety system designed and built to guarantee total safety of operation of steam generators Th...

Page 36: ... stops the boiler permanently The boiler operation is resumed only after the manual reset and the elimination of the error by the operator The system is supplied completely assembled to the boiler and tested It complies with the main European Directives Low Voltage Directive 2014 35 EU EMC Directive 2014 30 EU PED Directive 2014 68 EU Modulating level regulation system with 2 way electric valve Wi...

Page 37: ...Notes 37 7 Notes ...

Page 38: ...Notes 38 ...

Page 39: ...Notes 39 ...

Page 40: ...ICI CALDAIE SpA 37059 Fraz Campagnola di Zevio Verona Italy Via G Pascoli 38 Phone 39 0458738511 Fax 39 0458731148 info icicaldaie com www icicaldaie com ...

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