www.webasto.us 67 Webasto Product N.A., Inc.
DBW 2010/2020/300 COOLANT HEATERS PRODUCT INFORMATION
11. PRODUCT INFORMATION
11.1 ISS “WHITE” TIMER FOR THE SCHOLASTIC HEATER™
Product Information
Description: ISS “WHITE” TIMER INSTALLATION / OPERATION INSTRUCTIONS
Category: Thermosystems
Document Number: PI007RC
Date Posted: 02/02/2007
Overview
The ISS “White” timer is a 7-day NOI (no operator interface) timer. This means you can set this timer to specific needs
and the timer will do the rest. This timer has battery backup and will hold its memory if the vehicle battery is
disconnected and will recharge when 12 volt power is restored.
Installation
The timer should be installed in an area protected from the effects of weather and contamination. The timer can be
surface mounted on the vehicle instrument panel or inside the circuit panel (Bus applications) or any place convenient
and accessible.
The timer can be mounted using customer/installer supplied Velcro tape by
sticking one half of the Velcro to the timer and the other to a secure mounting
location. The timer can be mounted with screws in place of Velcro.
Connect the Webasto heater switching harness to the timer.
Refer to the wiring diagram below for directions.
After all connections are made, mount the new timer. Using customer/installer
supplied Velcro tape or screws.
Optionally, an On/Off toggle switch can be installed with the timer. The timer
will work without using the toggle switch however, it’s a nice option to have.
To mount the toggle switch, locate an appropriate mounting location and drill a
½” mounting hole. Refer to the wiring diagram on next page to, connect the
appropriate wires to the toggle switch.
Wiring diagram - ISS Timer
5 On Signal
4 Not Used
3 12 Volt Positive
2 Ground
1 12 Volt Positive
T1
X1
Legend
T1 Timer - 7-Day (NOI)
X1 9-Pin Duetsch Connector
C
B
D
A
J
E
F
G
H
Brown
Brown
Brown
deRdeR
Red
BT
F5
Black
Green
Red
White
Black
Black
Red
White
White
Red
Webasto Wiring Harness
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