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INSTALLATION AND OPERATION MANUAL
7. OPERATION
• FRONT CONTROL PANEL
The front control panel has an electronic boiler regulator 1, a green button for switching voltage to the boiler on/off 2 and
a red button for switching on the ventilator 3. The ventilator button possesses two operational positions:
- START - turns on the ventilator and launches the controller program;
- PAUSE - temporarily for 1 minute stops the ventilator and the controller program. After 1 minute has elapsed, the ventilator
is turned on and the controller program is continued further from the point of interruption. Duration of the pause could be
prolonged by means of service programming.
• REAR CONTROL PANEL
The following safety devices are installed in the rear control panel:
thermal fuse 1 and electric fuse 2 (Fig. 10). The purpose of the thermal fuse,
otherwise called the maximum boiler temperature emergency thermostat,
is to switch off the boiler ventilator if water temperature in the boiler
exceeds the maximum permissible 95°C due to unforeseen reasons. The
temperature sensor of the thermostat is installed in a dedicated sleeve 16
(Fig. 1). The burning intensity decreases when the ventilator is switched off
and the water temperature decreases. When the emergency thermostat
trips, the lamp of the ventilator switch 3 on the front panel switches off (Fig.
9) and the lighting indicator bulb 4 “Firing off” on the electronic regulator lights up (Fig. 11). In this case, it is necessary to find out
the causes of tripping and to remove them. After the boiler cools down, the emergency thermostat can be returned to its normal
operating mode. For this purpose, unscrew its cover and depress the red button.
The cause of overheating of the boiler and tripping of the emergency thermostat must be found and
removed. If this is not done, the risk of serious damage to boiler equipment as well as hazard to human health
and life remains. If the user cannot locate and remove the cause of tripping of the emergency thermostat, a
professional servicing company must be consulted!
The electric fuse is designated to protect the elements of the electric circuit in case the current in the mains exceeds 2 A. If the
fuse is damaged, the boiler will not switch on and its indicator lamps will not light. In this case, remove and replace the fuse.
The rear control panel of the boiler is grounded.
Fig. 9 Front control panel
1. Electronic boiler regulator; 2. Green button for switching the voltage of the boiler on and off; 3. Red button for switching on the ventilator.
PAUSE
START
START
1
2
3
FUSE
! 95°C
220 V
FUSE
1
2
Fig. 10 Rear control panel
1. Thermal fuse ; 2. Electric fuse; 3. Socket for connection of
a circulation pump.
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