User's Manual

Thermo 90 S / Thermo 90 ST 4 Technical data
401
4 Technical data
Except where limit values are specified, the technical data
below refer to the usual heater tolerances of ±10% at an
ambient temperature of +20 °C and at the rated voltage.
Electrical components
The control unit, motors for combustion air fan and
circulating pump, glow plug, switch and digital timer (no
timer for ADR mode) are designed for either 12 volts or
24 volts.
The temperature limiter, temperature sensor and flame
monitor are identical on 12 V and 24 V heaters.
Fuel for Thermo 90 S / Thermo 90 ST petrol:
The fuel specified by the manufacturer must be used.
Both leaded and unleaded fuel may be used.
Fuel for Thermo 90 S / Thermo 90 ST and Thermo 90
S-ADR / Thermo 90 ST-ADR (diesel):
The diesel fuel specified by the manufacturer must be
used.
We know of no negative influences due to additives. If fuel
is extracted from the vehicle’s tank, follow the additive
instructions issued by the vehicle manufacturer.
If you change to low-temperature fuel, the heater must be
operated for approx. 15 minutes so that the fuel line and
fuel pump are filled with the new fuel.
Heater Operation Thermo 90 S
Petrol
Thermo 90 ST
Petrol
Thermo 90 S diesel
Thermo 90 S-ADR
Thermo 90 ST diesel
Thermo 90 ST-ADR
EC licensing symbol ~S299 ~S298
Model Water heater with Ferro-Tec technology
Heat output Max.
regulating
range
2.0 kW – 7.6 kW
9.1 kW
1.8 kW – 7.6 kW
Fuel Petrol Diesel
Fuel consumption Max.
regulating
range
0.25 l/h – 1.0 l/h
1.1 l/h
0.19 l/h – 0.9 l/h
Rated voltage 12 volts 12 or 24 volts
Operating voltage range 10 ... 15 volts 10 ... 15 or 20 ... 30 volts
Nominal power consumption with circulating
pump
(without vehicle fan)
Max.
regulating
range
37 W – 83 W
90 W
37 W – 83 W
Max. ambient temperature:
Heater: - Operation -40 ... +110 °C (90 °C with control unit installed on heater)
- Storage -40 ... +110 °C (90 °C with control unit installed on heater)
Control unit: - Operation -40 ... +75 °C -40 ... +85 °C -40 ... +75 °C -40 ... +85 °C
- Storage -40 ... +85 °C
Metering pump: - Operation -40 ... +20 °C -40 ... +40 °C
- Storage -40 ... +85 °C
Permitted operating pressure (heat carrier) Max. 2.0 bar
Capacity of the heat exchanger 0.15 l
Max. combustion air intake temperature +40 °C
Minimum capacity of the circuit 6.00 l
Delivery rate of the circulating pump
against 0.15 bar
1650 l/h
CO
2
in exhaust fumes (permitted function
range)
Max. 10 ... 12.0% by volume
CO
2
adjustment values at approx. +20 °C
and geographic altitude above sea level
Max. 0 m 500 m 1000 m
10% 10.6% 11.3%
Heater dimensions (tolerance ± 3 mm)
* Control unit installed on the heater
L 310 (355*) mm
W 131 mm
H 232 mm
L 307 (352*) mm
W 131 mm
H 232 mm
L 310 (355*) mm
W 131 mm
H 232 mm
L 307 (352*) mm
W 131 mm
H 232 mm
Weight 4.8 kg