Pakole ZENIT-12 Series, Руководство пользователя

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ZENIT
TYPE TUBE RADIANT HEATER
User’s Manual
14
42.picture: Input and output gas pressure cheking connections in case of SIT solenoid valve
Following the switched on voltage the fan operates continuously assuring the 30 seconds prepurge time� This time period ensures the
three times air change of combustion volume in case of biggest appliance’s power�
When the pressure is suitable - after 30 seconds – the sparking happens and the solenoid valve opens in this way the gas catches fire�
gas flow
direction
gas flow
direction
1� On-Off solenoid valve EV1
2� On- Off solenoid valve EV2
3� Inlet pressure test point
4� Outlet pressure test point
5� Connection for pressure regulator / combustion chamber compensation
6� Servo pressure regulator
The flame sensor is self-monitoring and only performs an intervention on the burner it controls, insensitive to other environmental effects
(eg�: external heat, light)
In case during 5 seconds sparking (ignition) the continuous flame shape is stabilized, - and stable electrical signal is come back from the
electrode – the appliance operates and the green control lamp is lighting� During operation of appliance its automatic burner control con-
trols the condition of differential pressure switch and signals coming from the flame control continuously, and if the position of differential
pressure switch is changed – it is switched over from work position to rest – or the signal from the ionization flame control is interrupted
then it stops the gas supply of burner� The fan continues to rotate, none of control lamps is lighting�
In case during the burning process the pressure decrease under the permissible minimal value ont he positive side of air pressure (from
the fan side), then automation prohibits:
- gas supply and fan stops
The fan continues to rotate, none of control lamps is lighting�
In case during burning process the pressure increases above the permissible maximum value on the negative side of air pressure switch
(from the burner tube side, eg� at combustion back),then it switches back to rest position and the automation prohibits�
- gas supply and fan stops
The appliance stands into error position and red control lamp is lighting�
Restart is possible after the switching off and on of mains voltage
�
Operation of automatic burner control (SIT 579 DBC)