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Thermo 90 ST - Webasto

Thermo 90 ST - Webasto

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Thermo 90 ST

Specifications

Heat Rating:

Output:

From:

6,100 Btu/h (1.8 kW)

To:

26,000 Btu/h (7.6 kW)

Boost:

31,000 Btu/h (9.1 kW)

Fuel Type:

Diesel #1, #2, Arctic, Biodiesel (up to 20%)

Fuel Consumption:

From:

0.05 gal/h (0.19 l/h)

To:

0.24 gal/h (0.90 l/h)

Boost:

0.28 gal/h (1.10 l/h)

Rated Voltage: 12 Volts

Power Consumption @ 12 Volts:

From: 3.0 Amps (37 W)

To: 6.9 Amps (83 W)

Start: 7.5 Amps (90 W)

Dimensions:

L 15-3/4” x W 7-1/2” x H 14”

L 400mm x W 190mm x H 356mm

Weight: w/Enclosure

35 lbs. (16 kg)

Technical data is subject to +/- 10% variance

Auxiliary Coolant Heating System

4 - 0 Battery System

Recommended

(Reserve capacity,

minimum 160 minutes)

BLOWER

INTERLOCK

HARNESS

BUNK HEAT

EXCHANGER

COOLANT

HEATER

BLOWER

THERMOSTAT

HEATED AIR

Webasto Thermo 90 ST

Heater System Schematic

6

1. Webasto Thermo 90 ST

2. Electronic Control Unit

3. Fuel Metering Pump

4. Fuel Line

5. Fuel Filter

6. Fuel Standpipe

ON/OFF SWITCH OR

OPTIONAL TIMER

4

13

11

3

5

2

12

9

10

1

7 8

7. Exhaust Tubing

8. Muffler

9. Air Intake Tubing

10. Water Circulating Pump

11. Fuel Line Coupler

12. Clamp

13. On/Off Switch

See chart on back for application

specific Sleeper Pak* to complete

your installation.


Performance Guide

Auxiliary Coolant Heater Performance Guide - Thermo 90 ST

Avg. Nighttime Temperature

Based on your sleeper’s length and your average nighttime temperatures,

Thermo 90 ST

the Sleeper Index guide below will help you select the right Webasto

Coolant Heater. Plus, the Preheat Index shows the preheat duration at

specific temperatures needed to heat engines.

Sleeper Index

Preheat Index

°C °F

°C °F

4 40

-7 20

-1 30

-12 10

-7 20

-12 10

-18 0

-18 0

-23 -10

-23 -10

-29 -20

-29 -20

-34 -30

-40 -40

40” 50” 60” 70” 80” 90” 0 10 20 30 40 50 60 70 80

Sleeper Length (inches)

Engine Temperature

Approximate Time (minutes)

See chart below for application specific Sleeper Pak* to complete your installation

Designed for all Class 7 & 8 heavy-duty makes and models. For mid-range engine preheat, reference Webasto TSL 17 Spec Sheet.

Thermo 90 ST*

Compact

5001224A









Pak #2

Pak #3

Pak #5

Thermo 90 ST*

Enclosure

5001226A

















Optional Accessories

• •



Sleeper Paks

Pak #1 P/N 905670

(includes heat exchanger)

P/N 906543

P/N 906558A

P/N 906582

Standard Kit Components

Part Number

Integrated Control Unit

Fuel Metering Pump w/Mounting Bracket

Fuel Line w/Couplers and Clamps

Fuel Filter

Universal Fuel Standpipe

Fuel Pump Power Harness

Wiring Harness w/On/Off Switch and Fuse Block

Exhaust Muffler w/Mounting Hardware

Weather Protective Heater Enclosure

Magnetic Drive Coolant Pump

Blink Code Diagnostics and PC Interface Diagnostics

Operation/Installation Manual

2 Year Limited Warranty

7-Day Digital Timer w/Alarm - Model 1531 P/N 905797

Mounting Bracket Kit - Cross Frame P/N 600055

Mounting Bracket Kit - Perpendicular P/N 905822

Ford Aeromax, Kenworth AeroCab & Studio Sleeper built

before July 1994, and Navistar COE & Conventional

Freightliner Century Class- Classic-FLD, Kenworth Modular

Sleeper Box - T2000, Kenworth AeroCab & Studio Sleeper built

before September 1996, Mack CL, CH, Vision, Peterbilt Model

387, Sterling (all), Volvo VN - WIA, Western Star (all)

Kenworth AeroCab built after September 1996

Peterbilt (all Unibilt Sleepers EXCEPT Model 387)

*Sleeper Pak required to complete installation. Pak includes thermostat, blower interlock harness and operating instructions.

Webasto Product

North America, Inc.

15083 North Road

Fenton, Michigan 48430

Phone (810) 593-6000

Fax (810) 593-6001

www.webasto.us

www.techwebasto.com

© 2007 Webasto Product North America, Inc. • P/N 908174-T90 • 1/07

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