17
INSTALLATION AND OPERATION MANUAL
the appropriate button must be pressed: “+” for increasing and “-” for decreasing the temperature. After several seconds after
the last press of a button, the setpoint temperature is saved and the indicator returns to showing the measured temperature
of the boiler water.
When it indicates the setpoint temperature, a dot
lights up beside the readout. When the indicator
indicates the real measured temperature, the dot does
not appear. The regulator allows adjustment of the
temperature within the range of 65-85°C.
Lamp 3 “Firing on” indicates the active status of
the boiler. This lamp lights up when the ventilator is
switched on using the button 3 (Fig. 9) on the front
control panel and regulation of the ventilator speed
starts. The ventilator can be in operation mode only
when the signal lamp 3 (Fig. 11) lights.
Lamp 4 lights up when the boiler turns to the mode
“Firing off”. This boiler operation mode is established if
the following condition occurs:
• if during operation the temperature of flue gases
drops bellow 75°C and does not rise for some time.
Lamp 5 “Pump on” lights up when the regulator
switches on the circulation pump of the system. In accordance with the manufacturer’s settings, this occurs when the boiler
water temperature exceeds 60°C. As the boiler cools down and the water temperature drops below 58°C, the regulator
switches off the circulation pump and lamp 5 switches off. Service programming mode can be used to adjust other limit
temperatures for switching the circulation pump on (in the range of 60-75°C) and off (in the range of 58-73°C). To carry out
such adjustment, a servicing company should be contacted.
Lamp 6 “Ventilator on” lights up when the boiler ventilator is operating. The more frequently it blinks, the higher the
rotational speed of the ventilator is, since its blinking frequency corresponds to the impulse frequency of the power supply to
the ventilator. If this lamp is lighting constantly, it means that the ventilator is operating at 100% of its capacity.
Lamp 7 signals that the programming output channel is switched on. Button 8 is used for service programming and can
only be used by the specialists of the service company. We do not recommend the user to modify the programming modes.
The boiler regulator is connected to the boiler circuit in accordance with the scheme shown in Fig. 12. The power supply L2,
stemming from the front control panel and transferred to the regulator, is switched on when switches 2 and 3 (Fig. 9) are in
the position ON and the emergency thermostat has not tripped. The impulse commutator regulating the ventilator connects
periodically L2 to L3. When the boiler switches to status “Firing off”, L3 does not supply power to the ventilator and lamp 4
(Fig. 11) lights up. To return to the mode “Firing on”, the power supply L2 should be interrupted by switching off the ventilator
switch 3 (Fig. 9) or the power supply of the boiler (on/off button 2, Fig. 9), and later turning them on. The pump control relay
connects L4 to L1. The programmable channel relay connects P to L1.
The power of the operating ventilator ranges between 20÷100 VA. The maximum allowed power of the circulation pump
connected to the regulator is 250 VA. The maximum allowed power of the programmable channel is 250 VA.
• PRePaRaTIon foR fIRInG
Before kindling the boiler, check the position of the ceramic chopper 2 in the lower combustion chamber: the edge of the
KR-4.3D
X-2
X-3
X-1
U
L1
N
L2
L3
L4
P
L1, N- reguliatoriaus maitinimas;
L2 - ventiliatoriaus maitinimas;
L3 - įtampa į ventiliatorių;
L4 - įtampa į siurblį;
P - įtampa į programuojamą išėjimą;
U - vandens temperatūros jutiklis;
U - dūmų temperatūros jutiklis.
12 pav. Reguliatoriaus prijungimo schema
U
1
2
1
2
Rear panel of the regulator
fig. 12 Regulator connection diagram
L1, N – power supply to the regulator; L2- power supply from front control
panel to the ventilator; L3 – voltage to the ventilator; L4 – voltage to the
pump; P – voltage to the programmable channel; U
1
- water temperature
sensor; U
2
- flue gas temperature sensor.
