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The VU must be installed in a vertical position. The enclosed fastening strips are used to secure
the unit.
Arrows pointing towards each other.
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.
Antenna – Place and hide the antenna end, if possible, under the windshield gasket. Place the
antenna end 10mm from any metal parts to achieve optimal wireless range. Do not place the
antenna in the engine room.
REMOTE CONTROL OF THE FUEL HEATER
White - The white cable is connected to the analogue control input on your fuel heater.
Refer to the circuit diagram for your fuel heater.
Green - Separate control of the interior heater. Requires an additional relay.
BATTERY CHARGER
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.
Black - Connect to negative battery electrode and negative battery charger connector.
Yellow - Connect to battery charger connector showing a TIMER symbol.
TEMPERATURE SENSOR
Temperature sensor – Fit and place the sensor in the front of the vehicle shielded from splashing
and thermal influence from the engine or coolant system.
Installing DEFA WarmUp Termini™ 1350/1850/2100:
Follow this 10 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.
10. Test DEFA WarmUp.
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