Technical Data
Unless tolerances are shown within the technical data
table on the right, a tolerance of
10% applies at an am-
bient temperature of +20°C and at rated voltage.
Electrical components:
Control unit, motors for combustion air fan and circulating
pump, pencil-type glow plug, switch and digital timer (pres-
etting of operating times not possible in the case of ADR
vehicles) are designed either for 12-volt or 24-volt oper-
ation. Components such as thermal cut-out, temperature
sensor and flame detector are identical in 12 V and
24 V heaters.
Fuel for Thermo 90 / 90 S Petrol-Type Heater:
The fuel specified by the vehicle manufacturer is suitable
as fuel for the heater.
Both leaded and unleaded fuel may be used.
Fuel for Thermo 90 / 90 S and
Thermo 90 / 90 S-ADR (Diesel):
The Diesel fuel specified by the vehicle manufacturer is
suitable as fuel for the heater.
Any negative effect caused by additives is not known.
When the fuel for the heater is drawn from the vehicle’s
fuel tank the vehicle manufacturer’s specifications concern-
ing additives are to be observed.
When changing to cold-resistant fuels, the heater must be
operated for about 15 minutes to ensure that the fuel line
and the fuel pump are also filled with the new fuel.
Heater Operation Thermo 90
Petrol
Thermo 90 S
Petrol
Thermo 90
Diesel
Thermo 90-
ADR
Thermo 90 S
Diesel
Thermo 90
S-ADR
Type BW 80 Thermo 90 S B DW 80 Thermo 90 S D
Mark of approval ~S231 ~S299 ~S232 ~S298
Type water heater with Ferro-tec technology
Heat output Max.
control range 2,0 kW - 7,6 kW
9,1 kW
1,8 kW - 7,6 kW
Fuel Petrol Diesel
Fuel consumption Max.
control range 0,25 l/h - 1,0 l/h
1,1 l/h
0,19 l/h - 0,9 l/h
Rated voltage 12 Volt 12 oder 24 Volt
1)
Operating voltage range 10 ... 15 volts 10 ... 15 bzw. 20 ... 30 volts
Rated power consumption with circulat-
ing pump (without vehicle fan)
Max.
control range 37 W - 83 W
90 W
37 W - 83 W
Permissible ambient temperature:
Heater: - operation
- storage
Control unit: - operation
- storage
Metering pump: - operation
- storage
-40° ... +110°C (90°C
2)
)
-40° ... +110°C (90°C
2)
)
-40° ... + 75°C
-40° ... + 85°C
-40° ... + 20°C | -40° ... + 40°C
-40° ... + 85°C
Permissible operating overpressure
(heat carrier)
Max 2,0 bar
Capacity of heat exchanger 0,15 l
Max. combustion air intake temperature +40°C
Minimum circuit capacity 6,00 l
Flow rate of circulating pump against
0.15 bar
1650 l/h
CO
2
content in exhaust gas (permissible
operating range)
Max. 10 ... 12,0 Vol .-%
CO
2
-Setting values at RT and a geo-
graph. altitude above sea level
Max. 0m 500m 1000m
10% 10,6% 11,3%
Dimensions of heater
(tolerance
3 mm)
length 310 mm (355 mm
2)
)
width 133 mm
height 220 mm
Weight 4,8 kg
1) Thermo 90-ADR: 24 volts only
2) Thermo 90 S with control unit mounted to the heater
Thermo 90 / Thermo 90 S
20
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