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L Series Commercial Fully Premixed High Efficiency Low Nitrogen Condensing Boiler

  • High Thermal Efficiency (107%)
  • Eco-Friendly Low NOx Emissions (<30mg/kWh)
  • Enhanced Safety
  • Quiet Operation (<45dB)
  • Easy Maintenance
  • Small Size
  • Smart Control
  • Climate Compensation
  • Long Lifespan (30+ Years)
  • Low Gas Pressure Start (2Kpa-5Kpa)

L Series Commercial Fully Premixed High Efficiency Low Nitrogen Condensing Boiler

Low Nitrogen Condensing Boiler with <30mg NOx

Power Options: 350/700/1050/1400 kw


Technological Advantages

1. High Thermal Efficiency (107%)

*The boiler controller optimizes natural gas combustion and fan operation, preventing high-pressure combustion.

*Heating speed adjusts dynamically with energy-saving pressure reduction.

*It avoids the increased wear and efficiency loss caused by frequent start and stop, saves energy and prolongs the service life.

 

2. Eco-Friendly Low NOx Emissions

NOx emissions <30mg/kWh

 

3. Enhanced Safety

*Adopting the pre-air and natural gas complete premixing technology, there will be no explosion due to improper air-fuel ratio

*Intelligent multiple interlocking control, there will be no mis-ignition command

*The furnace is small, even if there is an explosion, it will not cause harm.

 

4. Quiet Operation (<45dB)

*Built-in burner, while the metal fiber surface combustion is micro-flame combustion, significantly reducing the combustion noise, while reducing flue noise.

*Using a fully premixed variable frequency low-noise fan, the boiler is silenced inside, and the noise is less than 45 decibels.

 

5. Easy Maintenance

*Only 50 cm of maintenance space is required, and the maintenance time does not exceed 30 minutes, which will not damage the integrity of the boiler.

*High reliability, short maintenance time, and can serve as backup for each other when multiple units are heating at the same time, minimizing the heating loss during maintenance.

 

6. Small Size

The 770KW boiler is only the size of a refrigerator, occupying only 1.3m², with a compact design, modular combination, and multi-unit linkage control.

 

7. Smart Control

*Smart and simple button operation, simple and reliable operation.

*Compatible with a variety of communication protocols, it can also connect to the host computer and infinite remote communication equipment.

*Run in a graded start mode, automatically control the number of boiler start modules according to the outdoor temperature.

 

8. Climate Compensation

Built-in climate compensation function, according to the outdoor temperature collected by the outdoor temperature sensor and the real-time room temperature monitored by the indoor thermostat, it can calculate and automatically adjust the optimal outlet water temperature at any time and send it to the heat dissipation system

 

9. Long Lifespan (30+ Years)

It is made of alloy steel, which is anti-oxidation and has stronger acid and alkali corrosion resistance than copper and lead. It has been specially treated to prevent scale and has a service life of more than 30 years.

 

10.Low Gas Pressure Start

The gas supply pressure only needs 2Kpa-5Kpa to operate. When the gas pressure is insufficient, the boiler can continue to operate.

 

Technical Data

Model


LL9GKQ350-NOVA350L

LL9GKQ700-NOVA700L

LL9GKQ1050-NOVA1050L

LL9GKQ1400-NOVA1400L

Rated Heat Input

kW

350

700

1050

1400

Min. Heat Input

kW

70

140

200

280

Rated Heat Output of Heating 80/60℃

kW

340

679

1020

1358

Rated Condensing Heat output 50/30℃

kW

367

729.4

1095

1458.8

Efficiency at 80/60℃ Max

%

97

Efficiency at 50/60℃ Max

%

103.5

Exhaust Gas Temperature 80/60°C (Radiator)

<70℃

<70℃

<70℃

<70℃

Exhaust Gas Temperature 50/30℃(Floor heating)

<45℃

<45℃

<45℃

<45℃

Energy Efficiency Class

/

I

I

I

I

Heating Temperature Regulation Range

20~80

20~80

20~80

20~80

Max. Allowable Flow

m³/h

20

40.1

60.1

80.2

Min. Inlet Water Temperature Rise

15

15

15

15

Min. Allowable Flow

m³/h

8.6

17.2

25.8

34.4

Max. Inlet Water Temperature Rise

35

35

35

35

Max. Water-side Pressure Loss

mH20

0.85

1.74

1.69

1.69

Min. Water-side Pressure Loss

mH20

0.45

0.32

0.32

0.32

Min./Max. Operating Pressure

MPa

0.02/0.1

0.02/0.1

0.02/0.1

0.02/0.1

Gas Supply Pressure 12T

Pa

3000

3000

3000

3000

Gas(12T)Max. Flow

m³/h

30.1

70.2

105.6

140.4

Gas(12T)Min. Flow

m³/h

7.1

14.1

14.1

28.2

Average Gas Consumption for Heating

m³/h

14.6

29.2

43.7

58.4

CO Emissions

ppm

40

40

40

40

NOX Emissions

mg/Nm³

≤25

≤25

≤25

≤25

NOX Class


5

5

5

5

Waterproof Protection Level


IP40

IP40

IP40

IP40

Voltage/Frequency

V/Hz

220~/50~

220~/50~

380~/50~

380~/50~

Electrical Power

W

450

3000

3000

3000

Product Dimension (LxWxH)

mm

1550*680*1300

1781*1020*1600

2098*1020*1600

2410*1020*1600

Heating Area

3500~9000

7000~17500

10000~25000

14000~35000

 

 


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