Webasto Thermo Series Installation guide

Thermo Series
Webasto
Brand
Webasto
Model
Thermo Series
Type
Installation guide

Webasto Thermo Series: The digital comfort timer that puts you in control of your vehicle's heating system. Easily set and adjust heating schedules, ensuring a warm and comfortable cabin every time you start your journey. Enjoy instant heating with the touch of a button, and customize your settings for different days of the week. Whether you're on the road for work or leisure, the Webasto Thermo Series provides reliable heating solutions tailored to your needs.

Webasto Thermo Series: The digital comfort timer that puts you in control of your vehicle's heating system. Easily set and adjust heating schedules, ensuring a warm and comfortable cabin every time you start your journey. Enjoy instant heating with the touch of a button, and customize your settings for different days of the week. Whether you're on the road for work or leisure, the Webasto Thermo Series provides reliable heating solutions tailored to your needs.

7-Day Digital Comfort Timer Model 1531 for Thermo Series
For questions concerning these installation instructions or products detailed on this sheet, call: 1-800-555-4518 USA
1-800-667-8900 Canada
Installation Instructions
Page 1 of 2Rev. 05/2002 907610 www.webasto.com
Installation Instructions
Dash cut-out dimensions for
mounting without frame.
Length: 3.32" (84.5 mm)
Height: 1.5" (38.2 mm)
Corner Radius: 0.12" (03.0 mm)
Depth: 2.0" (51.0 mm)
1. Find a suitable location on the dashboard. Ensure at least a 2.0” (51.0 mm) depth clearance
before cutting into the dashboard.
2. Place the mounting frame template on the dashboard.
3. Drill 6 mm (0.25") corner holes.
4. Drill 5 mm (0.1875") mounting holes for mounting the frame to the dashboard.
4. Cut out the mounting hole.
5. Mount the timer mounting frame.
6. Make all electrical connections as shown in the schematic (next page).
7. Insert the timer into the mounting frame.
Mounting Frame P.N. 474630 (not to scale)
7-Day Digital Comfort Timer Model 1531 for Thermo Series
For questions concerning these installation instructions or products detailed on this sheet, call: 1-800-555-4518 USA
1-800-667-8900 Canada
Installation Instructions
Page 2 of 2Rev. 05/2002 907610 www.webasto.com
Operation
*Truck Installations
Operation with C-plug to battery positive:
Press the “Instant heating” button. The heater remains
“ON” until the “Instant heating” button is pressed
again and switched “OFF”.
*Coach, Transit and School bus installations
Operation with C-plug to vehicle ignition signal:
For instant heater operation with ignition on:
Press “Instant heating” button. The heater is switched
“ON” and continues to operate until the “Instant
heating” button is pressed again or the ignition is
switched off.
With the ignition off:
Press the “Instant heating” button. The heater is
switched “ON” for the preset operating time.
NOTE: If the ignition is switched off while the heater is in operation, the remaining operating
time of 15 minutes is displayed and the heater continues to operate for this period of time.
Electrical Connections
*C-plug (9)
For Truck installations, connect to the Battery positive
For Bus installations, connect to the Vehicle ignition
B-plug
(1) Battery positive
(3) Operation light fault code
(5) Ground
(6) ON/OFF signal
(4) Dash lights (optional)
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  • Page 2 2

Webasto Thermo Series Installation guide

Thermo Series
Webasto
Brand
Webasto
Model
Thermo Series
Type
Installation guide

Webasto Thermo Series: The digital comfort timer that puts you in control of your vehicle's heating system. Easily set and adjust heating schedules, ensuring a warm and comfortable cabin every time you start your journey. Enjoy instant heating with the touch of a button, and customize your settings for different days of the week. Whether you're on the road for work or leisure, the Webasto Thermo Series provides reliable heating solutions tailored to your needs.

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