Operation Manual

MAIN BOARD PCB
Main board has different parameters such as fan speeds according to the boiler types
(24 kW, 30 kW, Natural gas, Propane,). A main board can be converted to another type by
installing an appropriate (Boiler Control Card) to the main board.
Main Board - Technical and Functional Specifications
General
Power supply range (standard): 195-253 VAC
!Power supply frequency:
50Hz
Working temperature range:
0
oc- 60 oc
Fusing: 4A
Inputs
Water pressure switch: 0,5 - 2,5 V de (0,0 - 4,0 bar)
DHW flow turbine
Max.
14 1/min
CH flow NTC sensor:
10 k0hm@25 °C
CH return NTC sensor: 10 k0hm@25 °C
Flue gas NTC sensor:
10 k0hm@25 oc
Thermal cut-off:
160
oc
Room thermostat: 24VDC
Ionization current: min. 11-lA
Outputs
Gas valve: 230 VAC
Igniter:
230 VAC
Pump: 230 VAC
Fan:
230 VAC
3 way electrical valve 230 VAC
12