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Logica -  Boilers
  Wood fired boilers with manual loading
  Logica
 
www.cichewicz.com / Boilers / Wood fired boilers with manual loading / Logica
 
Description of Logica
Logica is steel water boiler designed for combustion of wood and coal. The boilers with output of 20 kW can be used for heating of small buildings such as family houses, lodging-houses, motels, workshops, etc. The boiler’s output could reach 460 kW and could be suitable for heating of buildings up to 5 000 m2 of area like: shops, schools, apartment houses, etc. Boilers over 70 kW have in standard equipment fan and digital steering – those boilers are forced draft system boilers.
Recommended fuel :

- wood for heating systems (14-18 MJ/kg)
- stone coal
Fuel
LOGICA boilers are fired by cobble coal Ko II, Ko, nut coal O I, II, pea coal Gk and fine coal MI.  Coal can be substituted by firewood, however in such case the manufacturer cannot guarantee the rated boiler power. 
Features

· Possibility of combustion of cheapest fuel like: wood and coal
· Big loading chamber and comfortable loading doors
· 4 pass structure and ceramics archives good efficiency and working time about 6-8 hours on one loading of the wood and 14-20 hours on one portion of coal
· Mechanical plate system enables easy clean of the combustion chamber

Logica contains:


3pass boiler made from steel (5/6 mm ) with iron coast grill in combustion chamber
Outer Jacket with insulation
Digital control panel with pump steering
Optional -- heat exchanger (spiral) EN 303-5
Combustion chamber with ceramics

Mutli injection system of hot air (14-80 kW) , Mono air inlet system (80-460 kW)

TECHNICAL DATA

Power       

A
height

B
width

C
depth

Flue gas outlet (mm)

Water capacity  (l)

Air inlet system

Weight  kg

Max pressure

Pressure work

14-20 kW

1000

430

1000

180

80

multi

300

4 bar

2,5 bar

20-27 kW

1000

480

1000

180

95

multi

380

4 bar

2,5 ba

30-38 kW

1270

530

1000

180

110

multi

420

4 bar

2,5 ba

40-48 kW

1300

530

1100

180

125

multi

480

4 bar

2,5 ba

50-58 kW

1450

630

1100

180

140

multi

550

4 bar

2,5 ba

70-78 kW

1570

700

1460

200

180

multi

600

4 bar

2,5 ba

92,8 kW

1528

732

1190

220

241

mono

640

4,5 bar

3 bar

116 kW

1710

870

1360

220

285

mono

860

4,5 bar

3 bar

150 kW

1880

880

1500

220

356

mono

960

4,5 bar

3 bar

185 kW

2090

880

1500

220

413

mono

1030

4,5 bar

3 bar

230 kW

2090

880

1640

220

463

mono

1190

4,5 bar

3 bar

348 kW

2200

1100

2430

300

847

mono

2200

4,5 bar

3 bar

Logica models 14-78 kW
Logica models 92,8-348 kW
Boiler with lower-upped furnace and thermal insulation; standard control panel connected to the fan. The boiler’s body is built from welded certified boiler steel sheets with a fixed water grate with a movable cast iron grate in the combustion chamber. The convector part is made of specially formed ducts with washout holes on top and bottom, partially laid with chamotte. Unique air supply solution, where the air is pumped through numerous nozzles inside the combustion chamber.
The boiler is equipped with choke valves for chimney draught control. 
Depending on the version, the boiler comes with a room thermostat and cleaning and maintenance tools.
In standard versions, movable grate and blowdown connection for water pumping and emptying is located on the right side of the boiler.
It is recommended to clean the grate before each fuel feeding.
To economize fuel consumption and obtain the power parameters and heat output indicated by the manufacturer, the combustion chambers and convection ducts must be kept clean.
In particular, ash and slag must be removed from the combustion chamber grate and walls.
The boiler should be cleaned with the choke valve fully open, when the thickness of tarnish on flue walls exceeds 1.0 – 2.0 mm, however at least once a month. The feeding chamber should be cleaned through the upper cleaning hole. In order to clean convection ducts, open the upper washout hole, remove the wool and chamotte bricks, clean carbon deposit and soot with a steel brush and remove through the lower washout hole. Make sure that the lower washout hole is tightly closed.
The chimney should be checked and cleaned, if necessary, at least once a year.
The door sealing cord, lock and hinges should be checked regularly, at least every 14 days. Any defects should be immediately repaired.
Sealant and sealing cord should be replaced regularly.
Boiler installation
The scope of delivery:
Boiler insulated with mineral wool and steel glazed coating, movable grate lever, control unit box, fan and analogue room thermostat.
Boiler should be installed on a base at least 5 cm above the floor level.  The load bearing capacity of the floor slab should be calculated based on boiler weight and the base should be leveled. Boiler’s front should face the window so that the distance from the opposite boiler room wall is at least 0.5 m greater than boiler length and not less than 2 m. The distance between the back of the boiler and the boiler room wall should be at least 0.7 m.
Boiler room, where the boiler is located should meet the requirements of Polish Standard PN-87/B-02411.
 
Pipe connectionThe figure presents an open system central heating installation with upper division.
The installation must meet the requirements of Polish Standard PN-91/B-02413 on protection of water open system heating devices and open system storage tanks.
 
If there is any fuel left, the movable grate lever must not be moved! Only when the fuel has burned out, the grate may be moved to remove the ash, then it is possible to move the embers and refuel (with coal or wood). If there is no self-ignition, the boiler should be fired up according to the instruction.
Operating the boiler
Before commissioning, the boiler room and installation should be inspected, i.e., the installation and boiler fittings should be checked as well as integrity of flue pipes and circulating pumps, etc. The chimney must be heated before commissioning!
Additional information on the control unit usage has been enclosed to the instruction manual.
Firing the boiler
  Depending on the type of fuel, the upper or lower furnace can be used. If the lower furnace is used, the boiler works with greater power.
Fine coal can be used in upper and lower furnace. Load the fuel so that the upper nozzles on the sides of combustion chamber are not covered and fire up from the top with paper and wood. Close the door, set the desired temperature on the control unit and press “start”. If fine coal is used, the loading door should not be opened to reload until the entire coal load has been burned. 
If the lower furnace is used with nut or fine coal or wood, fire up a small portion of fuel through the lower door over the grate. Then move the burning fuel (wood, paper) inside the boiler into the combustion chamber with a special poker. Load fuel through the loading door, close it, set the temperature on the control unit and press “start”.
Lower furnace should also be used in emergency mode, e.g.: if there is power shortage or the control unit has broken down. In such case, the grate door should be left open to allow for natural chimney draught. The control unit should be unplugged so that the fan does not start working and blowing the combustion gas inside the boiler room after the power is back on.
The ash pan is equipped with dampers for air blow regulation. The dampers should be closed if the upper furnace is used, and opened, if the lower furnace is used.
Up to 460 kW capacity
460 kW
230 kW
Viessmann control panel

RK 2001A  Regulator

 

  1. master switch
  2. boiler temperature indicator
  3. boiler fire-up mode indicator
  4. boiler overheating indicator
  5. room thermostat indicator
  6. boiler thermostat knob
  7. circulating pump indicator
  8. fuel shortage indicator
  9. room thermostat knob
  10. test switch

 

 

1. REGULATOR CHAR1783941229.phpERISTIC

 

   The regulator  is to destined for boiler temperature setting-up. The regulator continues water temperature measurement then shows it on small screen and operates the circulating pump as well.

   The regulator is also equipped with room thermostat to assure the precise teperature regulation in the heated room space.

 

2. REGULATOR SET-UP

 

   Before feeding plug connection into the socket (230V/50Hz) it should be decided if regulator works with circulating pump or not. If first option is chosen the regulator should be taken of the boiler frame and after opening, properly connect the pump power lead to the place named “CENTRAL HEATING PUMP” .

Before regulator insertion into the casing it should be assured that the temperature sensor has not came out of the measurement casing.

 

Warning! Before regulator setting up it should be checked out if the wiring system is correctly connected to the ground.

 

Warning! A fan and pump of max. 250W can be connected to one regulator.

 

3. REGULATOR SERVICE

 

Connecting strip as well as the safety device socked is placed on the regulator back wall. On the same wall there is also placed room thermostat socked and time regulation handwheels.

 

4.REGULATOR WORKING Description of Logica

 

Regulator's work is based on suitable controlling of lhe fan and heating system circulating pump to achieve assigned boiler and room temperature. After regulator switching on or after switching off the boiler overheating indicator, the regulator begins boiler buring; it is shown by green indicator.

The burning process is finished if  boiler temperature achieves assigned value and green indicator will switch off.

If  boiler temperature does not achieve 65°C during 2 hours of  boiler working, the regulator will switch on the fan and shows fuel shortage indicator.

 

  During its work regulator shows an actual boiler temperature and controls fan

speed as below:

          > If during ot the burning process boiler temperature is lower than 60°C

     the fan works in 40 100% ; if temperature is higher than 6O°C the fan

     works in 100% of its power

  > If boiler temperature during its normal work is lower than assigned value more

     than 10°C then fan works in 100% of its power

  >If  boiler temperature during its normal work is lower than assigned value less

     than 10°C then regulator reduce the fan speed but not 1ess than 40% of its

     power

  >If boiler temperature is higher or equal of assigned thermostat temperature the

     fart switches off

  > The tan will switch on again when boiler temperature gets down about 5°C of

     assigned value

  >To avoid gasses accumulation during boiler outage, the regulator makes 5­secunds blows through tne boiler every 1÷9 minute. The blows can be set-up after regulator switching on when you can see (P1... .P9, P-) on the regulator sereen; pressing (P-) you will switch off the blows.

 

It circulating pump works:

 >during biler burning , until boiler achieves 65°C, pump is switched oft

 > if, boiler temperature is higher tnan 65°C pump starts to work and works until

      boiler temperature gets down to 60°C to avoid excessive boiler pre-coollng

 > if, during boiler operation the temperature temporarily gets down to 60°C the

      pumpstarts to work again after temperature achieves 65°C

 

FUEL SHORTAGE

 

If boiler temperature gets down under 65°C and it is continued by 30 min., then regulator switch off the fan and switch on the fuel shortage indicator.

In case of regulation repeated switching off, you should:

 >fill up the boiler with wood or to burn the boiler again if necessary

 > turn the thermostat handweel to the left as much as possible

 > wait until the fuel shortage indicator starts to blink

 > set-up boiler temperature using of thermostat handwheel

 

BOILER OVERHEATING

 

If boiler temperature achieves over 95°C, the regulator switches off the fan and switch on the boiler overheating indicator. Then you should:

 > wait until boiler temperaturegets down

 >remove boiler overheating reason

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