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13.2.6. Safety devices
Device
Safety catch 21 ( see Annex III, page
66)
Pressure sensor 14
Thermo relay 15
Bypass valve 20
Safety valve 22
Air outlet valve 8
Gas supply regulator 9
Ionization plug 6
Air pressure switch
13.3.Service functions
13.3.1.Parameters programming function
The parameters programming function permits to change the main launch and operation parameters of
the boiler. This function works only in the standby mode and permits to change the following parameters:
"P0" – ignition power 0 - 99 (100 steps);
"P1" – minimal heating power 0 - 39 (40 steps);
"P2" – maximum heating power 40 - 99 (60 steps);
"P3" – minimal time from switching off to the next putting into operation 0 - 14 (min). Factory
settings:
Parameter
P0
P1
P2
P3
For using the parameters programming function it is necessary to:
Switch the boiler off, consequently pressing the button К5 (see Scheme 3, page 8) until the symbol
1)
appears on the boiler's display.
Disconnect the boiler from the power line;
2)
Connect the boiler to the power line again. For 5 seconds there is a possibility to activate the
3)
programming function;
Press and simultaneously hold the DHW and heating temperature reduction buttons (К2 and К4) for
4)
activating the parameters programming function;
Quit hold of the buttons, when the code "P0" and the symbol
5)
Choose the parameter that must be changed, pressing the buttons КЗ or К4;
6)
Press the button К5, in order to see the parameter value on display. The symbol
7)
will start flickering;
Change the chosen parameter's value, pressing the buttons К1 (value increase) or К2 (value
8)
reduction). In order to increase speed of parameter changing you may press and hold the buttons К1
Purpose
For control
Protecting the electronic board and electric circuits from the power
line surcharge and short circuit
For the heat carrier
Minimal heat carrier pressure control and control of absence of air
in the heating system
Protecting primary heat exchanger from overheating
Protecting primary heat exchanger from overheating at increased
resistance in the heating system
Spilling the heat carrier from the heating system when the pressure
is higher than 3 bar
Automatic air removal from the heating system
For gas
Ignition at reduced pressure in order to avoid the "clap". Blocking
gas supply when a dangerous situation appears (heat carrier
overheating, absence of draught etc.)
Burner flame control.
Cease of gas supply to the burner when there is no flame
For combustion products
Fan operation control.
Cease of boiler operation in case of no draught or the fan's
breakdown
Natural gas
40
0
99
3
29
Technical staff manual
Liquefied gas
60
0
99
3
Technical staff manual
appear on display;
on display
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