NGW 300 / LGW 300 / GBW 300
4 Technical data
401
4 Technical
data
As long as no limit values are indicated, the technical data
refer to the customary heater tolerances of ± 10% at an
ambient temperature of + 20°C and at nominal voltage.
Type of gas:
The heaters may only be operated with the kind of gas in-
dicated on the model plate.
PLEASE NOTE
The NGW 300 version of the heaters is set for CNG-Gas
with a methane content of more than 95% by volume
when it leaves the factory. If the methane content is below
95% by volume (85 -95% by volume), the CO2 content in
the exhaust must be reset.
Electrical components:
Control units, the motor for the combustion air blower, the
circulating pump, gas pressure regulator solenoids, the
delayed-action solenoid, ignition spark generators and
pre-selector/timer are designed for 24 V.
Components such as the temperature limiters, regulating
thermostats, ignition electrodes, flame monitor electro-
des, vacuum switches and switches are not designed for
a specific voltage.
PLEASE NOTE
The allocation of circulating pumps to heaters must be
done in accordance with the cold water side resistors.
Heater model
GBW 300
Test mark
~ S 330
Version
NGW 300
LGW 300
Heat flow
30 kW
30 kW
Fuel
CNG
(natural gas with a minimum of 95
% methane)
LPG (Propan)
Combustion gas pressure when entering the heater
- 2,5 mbar
- 2,5 mbar
Fuel consumption
3,8 m
3
/h (3,15 kg/h)
(2,9 kg/h)
Nominal voltage
24 Volt
24 Volt
Operating voltage range
21 ... 30 Volt
21 ... 30 Volt
Rated power consumption without a circulating pump
110 W
100 W
Pressure regulator used
Landi Renzo, TN 1, 24V
Landi Renzo, SE 81, 24V
Pressure at the pressure regulator intake max/min
220 bar / 8 bar
30 bar / 1,5 bar
Permissible ambient temperature for the heater,
control unit and pressure regulator in the engine com-
partment
Storage temperature -25...+ 100 °C
Operating temperature-25...+85 °C
Storage temperature-20... + 100 °C
Operating temperature-20...+ 85°C
Permissible ambient temperature for the heater,
control unit and pressure regulator in the installation box
Storage temperature- 25 ... + 85 °C
Operating temperature-25...+ 60°C
Storage temperature- 20 ... + 85 °C
Operating temperature-20...+ 60°C
Permissible operating overpressure
0,4 ... 2,0 bar
0,4 ... 2,0 bar
Heat exchanger filling capacity
1,8 l
1,8 l
Minimum capacity of the circuit system
10,0 l
10,0 l
CO2 in exhaust gas at nominal voltage
8.5 ... 10.5% by volume
10 ... 12 Vol %
Thermostat regulating range
Switches off above 75 ± 3 °C
Switches on above 68 ± 3 °C
Switches off above 75 ± 3 °C
Switches on above 68 ± 3 °C
Heater dimensions
(Tolerance ± 3 mm)
L 620 mm
B 246 mm
H 220 mm
L 620 mm
B 246 mm
H 220 mm
Weight:
heater
pressure regulator
20 kg
3,2 kg
20 kg
2,0 kg
Circulating pump
U 4814
Aquavent 6000 S
Supply rate
5200 (against 0,15 bar)
6000 (against 0,4 bar)
Nominal voltage
24 Volt
24 Volt
Operating voltage range
20...28 Volt
18...32 Volt
Rated power consumption
104 W
215W
Dimensions
(Tolerance ± 3 mm)
L 228,5 mm
B 100 mm
H 105 mm
L 284 mm
B 115 mm
H 110 mm
Weight
2,1 kg
2,95 kg