Installation manual

Webasto Product N.A., Inc. 36 www.techwebasto.com
Technical Data Thermo 90 S / Thermo 90 ST
15. Technical Data
Except where limit values are specified, the technical data
refer to the usual heater tolerances of
±10% at an
ambient temperature of +20 °C (68 °F) and at the
nominal voltage and conditions.
15.1 Electrical Components:
The control module, motors for combustion air blower
and circulating pump, ceramic glow pin, metering pump,
switch and timer are designed for either 12 V or 24 V.
The temperature limiter, temperature sensor and flame
sensor are identical on 12V and 24V heaters.
15.2 Fuel for Thermo 90 S and Thermo 90
ST (Gasoline):
The fuel specified by the vehicle manufacturer must be
used. Both leaded and unleaded fuel may be used.
15.3 Fuel for Thermo 90 S and Thermo 90
ST (Diesel):
The diesel fuel specified by the vehicle manufacturer
must be used. Heating oil may also be used as long as it
complies to the normal quality available on the North
American market.
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 approximately 15 minutes so that the
fuel system is filled with the new fuel.
The Thermo 90 S and Thermo 90 ST heater is also
licensed for use with PME (bio-diesel), which complies
with DIN EN 14214.
Table 1: Technical Data - Metric Measurement
Heater Operation Thermo 90 S Gasoline Thermo 90 S Diesel Thermo 90 ST Diesel
EC licensing symbol e1*2001/56*0005*__ e1*2001/56*0005*__ e1*2001/56*0019*__
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 Gasoline 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 V 12 or 24 V
Operating voltage range 10 ... 15 V 10 ... 15 or 20 ... 30 V
Nominal power consumption with circulation
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 module installed on the heater)
- Storage -40° ... +110 °C (90 °C with control module installed on the heater)
Control module: - Operation -40° ... +75 °C -40° ... +75 °C -40° ... +85 °C
- Storage -40° ... +85 °C
Metering pump: - Operation -40° ... +20 °C -40° ... +40 °C
- Storage -40° ... +85 °C
Max. operating pressure (heat medium) Max. 2.0 bar
Capacity of the heat exchanger 0.15 l
Max. combustion air intake temperature +40 °C
Minimum capacity of the system 6.00 l
Coolant pump delivery rate against 0.15 bar 1650 l/h
CO
2
in the exhaust gases
(normal 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 module installed on the heater
L 310 (355*) 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