User’s manual
13.2.
Main components
13.2.1.
Control system
Component
Function
Electronic board 22 (see p.
13.1
, page 24)
To control boiler’s operation and ensure safety in
case of emergency
Wiring
A set of cables for connecting a board with sensors,
components and mechanisms
13.2.2.
Hydraulic system
Component
Function
Heat exchanger 4 (see p.
13.1
, page 24)
To transfer produced heat while gas burning to the
heat carrier, transfer heat from heat carrier to water
of DHW system.
Pump 19
A component to create a compulsory water
circulation
Air duct valve 20
Automatic air removal out of the heating system
Expansion tank 21
Compensation of water expansion in CH as a result
of heating
13.2.3.
Gas system
Component
Function
Burner block (burner) 5
(see p.
13.1
, page 24)
Mixing gas and air and ensuring uniform
combustion of gas-air mixture in the combustion
chamber
Igniter 23
Forming a spark on the ignition plug
Ignition plug 6
To create a spark for igniting of the gas-air mixture
on the burner
13.2.4.
Smoke exhausting system
Component
Function
Fan 2 (see p.13.1, page 24)
Compulsory removal of combustion products
13.2.5.
Regulation devices
Component
Function
For gas
Gas supply regulator 8
(see p.
13.1
, page 24)
Regulate gas supply to the burner block
For water
CH temperature sensor 10
Measuring temperature of the heat carrier. Signal
from the sensor is applied for maintaining set
temperature of heat carrier in CH
DHW temperature sensor 14
Measuring water temperature in DHW. Signal is
applied for maintaining DHW set temperature
DHW flow sensor 15
Defining DHW water flow. Signal from the sensor
is applied for rendering boiler into the DHW mode
while opening a hot water tap
13.2.6.
Safety devices
