Model NO.
L1PB20 / L1PB24 / L1PB28 / L1PB32
Rated Heat Input
20KW / 24KW / 28KW / 31.5KW
Max. Heat Input
20KW / 24KW / 28KW / 31.5KW
Rated CH Heat Output
17.8KW / 21.4KW / 25KW / 28KW
Min.CH Heat Input
7.4KW / 8.9KW / 10.4KW / 11.7KW
Min.CH Heat Output
6.5KW / 7.8KW / 9.1KW / 10.3KW
Heat Efficiency
0.9 / 0.9 / 0.9 / 0.9
Heat Efficiency When 30% Heatload
0.9 / 0.9 / 0.9 / 0.9
Gas Type/Pressure
N.G. /2000pa / N.G. /2000pa / N.G. /2000pa / N.G. /2000pa
CH Temp. Adjustment Range
30~80°C / 30~80°C / 30~80°C / 30~80°C
Low CH Temp. Adjustment Range
30~55°C / 30~55°C / 30~55°C / 30~55°C
Max. Water Pressure of CH system
0.3Mpa / 0.3Mpa / 0.3Mpa / 0.3Mpa
Expansion Tank Capacity
6L / 6L / 6L / 6L
Expansion Tank Pre-set Pressure
0.1Mpa / 0.1Mpa / 0.1Mpa / 0.1Mpa
DWH Temperautre Adjustment Range
35~60°C / 35~60°C / 35~60°C / 35~60°C
DHW Min. Water Start-up Volumn
2L/min / 2L/min / 2L/min / 2L/min
DHW Shut-off Water Volumn
1.8L/min / 1.8L/min / 1.8L/min / 1.8L/min
DWH Max. Water Pressure
0.6Mpa / 0.6Mpa / 0.6Mpa / 0.6Mpa
DWH Min. Water Pressure
0.03Mpa / 0.03Mpa / 0.03Mpa / 0.03Mpa
Rated Hot Water Capacity Δt=25
10L / 12L / 14L / 15L
Rated Hot Water Capacity Δt=30
8.3L / 10L / 11.6L / 12.5L
Voltage/Frequency
220V/50Hz / 220V/50Hz / 220V/50Hz / 220V/50Hz
Waterproof Level
IPX4D / IPX4D / IPX4D / IPX4D
CH Outlet/ Backwater
3/4\' / 3/4\' / 3/4\' / 3/4\'
DHW Water Outlet/Inlet
1/2\' / 1/2\' / 1/2\' / 1/2\'
Gas Inlet
3/4\' / 3/4\' / 3/4\' / 3/4\'
Pipe Diameter
∅100/∅60mm / ∅100/∅60mm / ∅100/∅60mm / ∅100/∅60mm
Panel Dimension (W*H*D)
700*400*308mm / 700*400*308mm / 700*400*308mm / 700*400*308mm
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