Gavardo Caldaie EN

Horizontal Thermal oil heater OMD

Forced circulation (or "coil", “serpentine”) Thermal oil heater, in horizontal execution. Wide range of models available.

Three smoke passes and guaranteed efficiency of 86%
Power range 100.000 – 3.000.000 kcal/h (116 – 3489 kW)
Low thermal inertia
Gas, LPG, and diesel burners from the most renowned brands
IP65 integrated electrical control panel
Two-stage, progressive or modulating operation
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  • Great design flexibility

    • Operating options:
      • Two-stage: two potentials and two burner flames, operation at 50% and 100% power.
      • Modulating: continuous power modulation by inverter, from a minimum of 30% to a maximum of 100%.
    • Customizable accessories according to customer's specific needs.
    • Single or multiple lead internal coil, designed in function of thermal power. Large exchange surface, for a uniform heating of oil.
  • High quality standards

    • Inner tube bundle made by two concentric coils manufactured from P235GH/P265GH (eq. ASTM A106 Gr. B) carbon steel pipes, designed to maximize heat exchange surface between water and flue gas.
    • The inside of the lower diameter coil represents the combustion chamber. On one side, the combustion chamber is closed by a cap (removable for inspection), insulated by refractory material.
    • Large front and rear doors can be removed for inspection and maintenance. The special fastening system ensures perfect sealing of the flue gas lap and optimal thermal efficiency even after many openings of the combustion chamber. 
    • Body insulation by refractory ceramic fibers and an external stainless steel sheet layer.
      Use of refractory material is limited and is concentrated only in the highest temperature areas. Thermal inertia is reduced, so that the risk of overheating or degradation of the oil in case of an emergency heater shutdown is reduced as well.
    • Internal collectors provide an even flow distribution inside the coils.
    • Inlet and outlet flanged connections PN16.
  • Complete and functional control panel

    Each machine comes complete of the electromechanical cabinet. It integrates the control panel complete of all buttons, selectors, digital controllers necessary for operating. Main features are:

    • Main power switch.
    • Auxiliaries on/off selector switch.
    • Pump on/off switch.
    • Burner on/off selector switch.
    • Manual lockout reset button.
    • Digital temperature controller for continuous monitoring of inlet and outlet oil temperatures.
    • Dedicated indicator lights for each of the possible anomalies (safety temperature switch, motor protection switch, differential pressure switch, chimney lockout, min oil level inside expansion tank lockout, burner lockout). 
    • Customization available (additional probes, digital PLC, remote control and block signals, burner flame ignition counter, etc.).
Disegno tecnico di caldaia ad olio diatermico OMD
1

Oil output / Sortie d'huile / Salida de aceite

2

Oil circulation pump / Pompe de circulation d'huile / Bomba de aceite

3

Burner / Brûleur / Quemador

4

Electrical panel IP65 / Tableau électrique IP65 / cuadro eléctrico

5

Differential pressure switch / Pressostat différentiel / Presostato diferencial

6

Inlet pressure manometer / Manomètre d'entrée / Manòmetro entrata aceite

7

Outlet pressure manometer / Manomètre de sortie / Manòmetro salida aceite

8

Chimney / Cheminée / Chimenea

9

Flame spy / Temoin de flamme / Mirilla inspeccion ilama

10

Expansion compensator / Compensateur d'expansion / Compensador de expansión

 

 

100

200

300

400

500

600

700

800

1.000

1.200

1.500

1.800

2.000

2.500

3.000

Power

[kcal/h]

100.000

200.000

300.000

400.000

500.000

600.000

700.000

800.000

1.000.000

1.200.000

1.500.000

1.800.000

2.000.000

2.500.000

3.000.000

[kw]

116

233

349

465

582

698

816

930

1.163

1.936

1.744

2.098

2.326

2.915

3.489

Max output temperature

[°C]

280

280

280

280

280

280

280

280

280

280

280

280

280

280

280

Inlet temperature

[°C]

240

240

240

240

240

240

240

240

240

240

240

240

240

240

240

Oil output

[DN]

DN32

DN32

DN32

DN50

DN50

DN50

DN50

DN65

DN65

DN80

DN80

DN100

DN100

DN125

DN125

Chimney diameter

[mm]

160

200

200

300

300

300

350

350

350

350

450

450

450

550

550

Fumes pressure drop

[mbar]

2

2

3,5

4,5

5

5,5

5,5

6

6

8

8,5

8,5

9

9

9,5

Dimension

A [mm]

1.450

1.600

1.650

1.650

1.650

1.650

1.820

2.000

2.000

2.000

2.140

2.250

2.250

2.500

2.550

B [mm]

1.250

1.250

1.600

1.970

2.470

2.530

2.600

2.700

2.980

3.200

3.650

3.650

4.000

4.100

4.300

H [mm]

1.300

1.350

1.350

1.350

1.350

1.350

1.600

1.600

1.600

1.600

1.750

1.850

1.850

1.960

2.150

L [mm]

See burner measures

Weight (burner excluded)

[kg]

800

1.000

1.200

1.350

1.450

1.800

2.100

2.300

2.550

2.900

3.300

3.600

3.800

4.500

5.000

 

The data shown are indicative and may therefore vary.

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Indicated on the machine plate.
Steam gen. (NF followed by 4 digits), e.g: NF6415
Thermal oil heat. (5 digits), e.g: 01498
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