Suitable fuels for Thermo 90 ST Marine are those specified by the vehicle manufacturer. For gasoline heaters, you can use both leaded and unleaded gasoline.
When switching to frost- resistant diesel fuel, diesel heaters need to be started for about 15 minutes to fill the fuel pump and fuel lines with new fuel. Additives to diesel fuel do not have a harmful effect on the operation of the heater. Diesel modifications of Thermo 90S / ST heaters rated for 24 V can also be used on vehicles carrying dangerous goods.
According to the EU Directives on the Rules for the Transport of Dangerous Goods by Road (ADR / RID Part 9, Section 18.104.22.168), autonomous heaters and pre -heaters installed in vehicles designed for the transport of dangerous goods must have certain additional functions, especially automatically turn off when the load device is turned on and turn on only in the presence of the driver (i.e. only manually, with a switch installed in the cab). Thermo 90S and Thermo 90ST heaters satisfy these requirements provided that they are properly connected to the vehicle’s on-board network and the load handling device. Therefore, in this Instruction, electrical circuits of heaters installed in such vehicles are separately shown - in Fig. 17-18 for Thermo 90S and Fig. 21-22. for Thermo 90ST.
The switch of the dangerous goods supply device (S7 on the electrical circuits) must be installed so that when the feeder is turned on, a plus is applied to the corresponding contact of the heater control unit.
If at the input of the heater control unit (plug X12, pin 5 for Thermo 90S and plug X8, pin 5 for Thermo 90ST) after switching on the heater there is no ground connection via Y2 or H5, then all functions provided specifically for installation in vehicles for the transport of dangerous goods are not valid.
After a plus is applied to the indi cated plugs, when the dangerous goods supply device is switched on, a short purge occurs (within 20 seconds for the Thermo 90S and 40 seconds for the Thermo 90ST), after which the heater is in the emergency shutdown mode. This mode is exited by turning the heater off and on again.
According to EU Directives, a heater installed in a vehicle designed for the transport of dangerous goods can only be switched on manually, using a special switch installed in the cab. Therefore, when installing a heater equipped with a timer on such a car, you need to make sure that pin 4 on the timer remains free. Due to this, the heater can be turned on only by pressing the direct power button on the timer (the electrical circuit is sent on request).
The use of other timers in vehicles for the transport of dangerous goods is not allowed.