M1 series boilers

M1 series boilers are used for heating of large sized residential and industrial premises and supplying heat for technological needs.

Fuel used: saw dust wood chips, pellets of various types, compressed peat, grain waste, grain or other fuels. We can test your fuel in our laboratory.

Main characteristics of these boilers:

  • Good economic and environmental parameters

  • balanced water flow in the heat exchanger protects it from overheating and residue

  • automated control of the combustion process

  • moving fire grates (step grate) spreads fuel evenly and moves it through the combustion chamber

  • primary air is supplied into separate zones underneath the step grate

  • Automated combustion chamber deashing

  • Automated deashing from beneath the step grate

  • Pneumatic heat exchanger cleaning (option)

  • Choice of combustion chamber equipments depending on the fuel humidity and ash slagging

  • Boiler operates together with fuel storage and fuel supply equipment

  • Boiler may be transported in parts

Boiler controller controls combustion process and the following parameters:

  • Fuel supply conveyor

  • Primary and secondary air fans

  • Moving fire grates drives

  • Deashing transporters

  • Transporter for deashing from beneath the step grate (if installed)

  • Pneumatic cleaning of the heat exchanger (if installed)

  • Boiler recirculation pump

  • Boiler exhauster

  • Exhaust recirculation exhauster (if installed)

  • Combustion according to the λ sensor

  • Emergency signal transmission via GSM network (optional)

  • Visualization of heat plant control (optional)

  • Heat plant remote control via internet (optional)

Boiler model

K-140M1

K-320M1

K-500M1

K-720M1

K-950M1

Boiler type

Hot water boiler with moving fire grate, steel, shell boiler

Nominal heating output (QN),  kW

140

320

500

720

950

Minimal heating output (Qmin),  kW

42

96

150

216

285

Efficiency, %

81

81

81

81

81

Main used fuels

Saw dust, wood chips with moist content not exceeding 40% (length not greater than 50mm) .

Other fuels permitted for firing Fire wood, waste wood, peat and saw dust briquettes, coal

Fuel consumption, kg/h

62

141

220

317

419

Loading opening BxH, mm

400×450

400×450

600×620

600×620

600×620

Combustion chamber

H, mm

400

500

500

640

700

B, mm

640

940

940

940

910

L, mm

1000

1640

1640

2590

2590

volume, dm3 (l)

260

770

770

1558

1650

Aerodynamic resistance at QN, not more than, Pa

180

270

300

320

340

Exhaust temperature at boiler flue outlet, °C

185

185

185

185

185

Exhaust volume, m3/h

750

1714

2677

3856

5087

Flue outlet dimensions, mm

Ø240

Ø325

Ø380

Ø380

Ø480

Water operating pressure, bar (MPa)

6 (0,6)

6 (0,6)

6 (0,6)

6 (0,6)

6 (0,6)

Minimum return water temperature during operation, ºC

60

Maximum permitted operating water temperature, ºC

110

110

110

110

110

Water flow, at Δt =20 ºC, t/h

5,97

13,67

21,37

30,78

40,62

Minimum water flow, t/h

4,01

9,17

14,33

20,64

27,23

Hydraulic resistance at Δt =20 ºC, mm of H2O

0…380

0…420

0…440

0…450

0…470

Water volume in the boiler, m³

0,58

1,15

1,66

2,2

3

Heat exchange area, m²

10,3

25,8

32

43

73

Connection pipes

Nominal diameter, mm (inches)

65 (2½”)

65 (2½”)

80 (3″)

80 (3″)

80 (3″)

flange diameter, Ø mm

160

160

160

160

160

Mass (not greater than), kg

3500

4900

5820

7300

9700

 

 

Boiler type

K-140M1

K-320M1

K-500M1

K-720M1

K-950M1

H, mm

2105

2480

2610

2765

2950

B, mm

1300

1500

1630

1630

1840

L, mm

1900

2810

2840

3640

4180

A, mm

800

1000

1400

1400

1400

C, mm

1400

2160

2620

2920

3220

D, mm

486

746

846

900

900

E, mm

1534

2154

2370

2520

2520

F, mm

1500

1970

2400

2400

2400

M, mm

304

374

400

400

400

P, mm

Ø240

Ø325

Ø380

Ø380

Ø480

T, mm

Ø76

Ø76

Ø89

Ø89

Ø89

Recommended connection to the heating system diagram:

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