
The MultiCharger cable (2 cm) between the fuse holder and battery may not be shortened. If the
cable has to be extended, the cross section must also be enlarged.
Double the length = double the cross section
Preparing for installation
The workshop/garage is always responsible for taking all necessary precautions when installing DEFA
WarmUp. Avoid locating units too close to high temperature engine components like the exhaust system,
turbo etc. Ensure proper distance from rotating or moving parts such as the alternator and steering rod.
Installing DEFA WarmUp Termini™ 1350/1850/2100:
Follow this 1 steps when installing DEFA WarmUp:
1. Disconnect the battery at the negative terminal. Read the instructions from the vehicle manufacturer
before disconnecting the battery.
2. The engine heater is selected according to the model list from DEFA. Install the engine heater at the
location as specified in the respective installation manual. Fill the vehicle’s cooling system with an
approved coolant and bleed air out of the system in accordance with the instructions from the vehicle
manufacturer.
3. Determine a suitable path to route the extension cables for the interior heater.
4. Install the interior heater in the interior of the vehicle. Be sure to use the enclosed drilling template for the
holder.
5. Install DEFA MiniPlug in an easily accessible spot at the front of the vehicle or where the customer
requests.
6. Position the battery charger/relay box in such a way that it can be connected to the extension cables from
the interior heater, engine heater and device connector.
7. Install the SmartStart™ vehicle unit (VU) with the cables and connect them to the MultiCharger/relay box.
8. Attach the SmartStart™ antenna outside of the engine compartment.
9. Connect the battery at the negative terminal.
1 . Test DEFA WarmUp.
2 The VU must be installed in a vertical position. The enclosed fastening strips are used to secure the unit.
1 Arrows pointing towards each other.
9 Blue - Only required for the remote control of a fuel heater. For an electric vehicle heating system, the ignition signal is
recognised when the voltage drops when the vehicle is started.
5 Antenna – Place and hide the antenna end, if possible, under the windshield gasket. Place the antenna end 1 mm from
any metal parts to achieve optimal wireless range. Do not place the antenna in the engine room.
REMOTE CONTROL OF THE FUEL HEATER
6 White - The white cable is connected to the analogue control input on your fuel heater. Refer to the circuit diagram for
your fuel heater.
8 Green - Separate control of the interior heater. Requires an additional relay.
BATTERY CHARGER
10 Red - Connect to positive battery electrode via the enclosed 5A fuse and to the positive connector on the battery
charger. DO NOT cut the enclosed cables.
11 Black - Connect to negative battery electrode and negative battery charger connector.
12 Yellow - Connect to battery charger connector showing a TIMER symbol.
TEMPERATURE SENSOR
7Temperature sensor – Fit and place the sensor in the front of the vehicle shielded from splashing and
8
thermal influence from the engine or coolant system.
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Date:17/ 2/2 11 Page 2/8
NM_47125 _ 1_17 22 11_EN