TEPLOSTAR Binar-5B-Compact, Руководство пользователя

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ENG Binar-5B/5D-Compact
4 Description of pre-heater set-up and operation.
The pre-heater runs independently of the vehicle engine.
The pre-heater is fueled and powered from the vehicle. The pre-heater electric
circuit is given in figure 4.1.
The pre-heater is an autonomous heater (main components are given in figure 4.2),
consisting of:
- heater (main components are given in figure 4.3);
- fuel pump for fuel supply to the combustion chamber;
- pump for forced circulation of cooling system liquid through the heat-exchanging
system of the pre-heater and the vehicle;
- control unit (part of the heater) to coordinate operation of the above-mentioned
systems;
- pre-heater control panel with timer for manual or automatic start-up of the pre­
heater;
- wiring harness for connection of the pre-heater components to the vehicle systems.
The pre-heater is integrated to vehicle cooling system with its hydraulic frame so
that the pre-heater’s pump provides circulation of cooling liquid in the engine and in the
heater.
The pre-heater principle of operation is based on warming-up of liquid in the engine
cooling system with its further forced pumping through the heat-exchanging system of
the heater.
Gases generated because of the fuel blend combustion in the combustion chamber
warm up the liquid. The heat is transmitted through the walls of the heat exchanger to the
coolant fluid, which in its turn is pumped through the cooling system of the vehicle
engine.
When the pre-heater is switched on, first of all there is performed functional test of
its components, such as: flame detector, heat and overheating sensors, pump, air pump
motor, glow plugs, fuel pump and corresponding electric circuits. In case of nonfailed
status, there starts ignition. Simultaneously the pump is also activated.
In conformity with the preset program there is performed preliminary purging of the
combustion chamber and glow plug warming-up to the desired temperature. Then, there
starts fuel and air supply and combustion process is initiated in the combustion chamber.
The flame detector controls combustion of the fuel blend in the combustion chamber. Hot
gasses heat the walls of the heat-exchanger, which warm up the liquid in the engine
cooling system.
The control unit controls temperature of the coolant fluid by two sensors. The
sensors are installed close to inlet and outlet nozzles of the heat exchanger. The control
unit sets operation mode for the pre-heater according to the temperatures: «full duty»,
«low duty» or «cooling down».
The full duty mode means that the coolant fluid is heated up to 75°C and in case of
overheating the pre-heater is switched to the low duty mode. The low duty mode means
that the coolant fluid is heated up to 85°C; in case of overheating more than 85°C the pre­
heater is switched to the cooling-down mode. The cooling-down mode means that
combustion stops, the pump continues its operation.
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