Its universal design makes the Thermo 90 ST an ideal engine-

independent heating solution for medium to large-engine vehicles.

The engine as well as the vehicle’s interior are quickly and

efficiently warmed to optimal temperatures, ensuring the best

operating conditions, even at the lowest ambient temperatures.

Thermo 90 STMulti-purpose, powerful water heater for heavy commercial vehicles

�� Engine-independent heating for commercial vehicles, offering up to 9.1 kW of heating power�� Developed with know-how and quality standards from series manufacturing�� Universal, comprehensive accessories delivery�� Available for initial installation and retrofitting�� Capable of diagnostics

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Truck Bus Off-Highway Special VehiclesLight-duty Vehicles Rail Defense

Heater controls:�� Switch with function display

Simple on/off switch for the additional (parking) heater

�� Digital timer 1531, standard timer

Temperature selection, programming of

up to three separate start times

Technical specifications:

Thermo 90 ST

Diesel Petrol

ECE approval numberECE R122 (heater) E1 00 0217

ECE R10 (EMC) E1 03 4881

Heating performance (kW) Part load - full load/boost 1.8 - 7.6/9.1 2.0 - 7.6

Fuel consumption (kg/h) Part load - full load/boost 0.19 - 0.9/1.1 0.25 - 1.0

Nominal voltage (V) 12/24 12

Nominal power consumption (W)

(with U4846)Part load - full load/boost 37 - 83/90 37 - 83

Fuels Diesel EN 590, Arctic-Diesel, heating oil (EL) Petrol EN 228

Operation temperature range (°C) –40 to +80

Measurements L x W x H (mm) 355 x 133 x 232

Weight (kg) 4.8

Technical specifications:

U4846

Volume flow (l/h) 700

Measurements L x W x H (mm) 180 x 74 x 112 (incl. connectors)

Weight (kg) 0.7

www.webasto.com

Webasto Thermo & Comfort SE P.O. Box 1410 82199 Gilching Germany