Heating Boiler FUWI on Pellets can work in one of three modes:
1. Manual 2. Weather mode 3. Summer
1. Manual mode of work:
User with help of Operational Panel in submenu of Boiler set temperature for work of boiler
manually (purpose of buttons Increasing or Decreasing - see page 11)
Manual mode means only and exclusively manual settings by user of Boiler
temperature.
2. Weather mode of work:
Present mode requires installation of external temperature sensor as well as central heating
temperature sensor. Temperature of work is set by linear programmable heating curve, thanks to
that there is not necessity to adjust boiler temperature by hand in case of outside temperature
changes. In principally at night is always colder than during day time. It is temperature of boiler work
in external temperature function. Setting of boiler temperature is counted on basis of this curve and
is about 20
0
C higher.
SEE!!! Integral part of present manual is boiler automatics manual.
3. Summer mode of work:
Controller in this mode is used in summer to heat of warm usable water. In this mode (apart from
alarms) heating water pump does not start. Temperature of boiler is set manually using parameter
"set boiler temperature. ”.
If boiler temperature for warm water purposes is lower from temperature set in
manually mode or weather mode, then temperature set of boiler work will be this
higher temperature.
page 12
Very important items connected with proper functioning of Heating Boiler FUWI on Pellets are
proper settings in boiler controller (Operator Panel) in submenu: Burner, namely:
1. Feeding:
Fuel feeding is the very important process for boiler functioning. For more efficient setting of
standstill time for fuel feeding there is a preset the same parameter for all powers of boiler and
which is 10 seconds. It has to be set only time of fuel feeding. It has to be made in according to
Table Nr 1 (see below, page 15), but in individual cases it can be changed in range not more 1
or 2 second. It depends from caloricity and shape of used pellets fuel as well as from energetic
demand of heated object.
2. Blower:
It is the second very important factor of correct boiler functioning. Maximum use of fuel energy
depends on it, as well as correct ecological burning.
Settings of blower power in Heating Boiler FUWI on Pellets are individual and depend on many
external factors, influencing mainly on chimney draught. This adjustment should be made for every
boiler starting from ventilator settings (enlarging or reducing). This action has to be execute in
temperature of boiler minimum 600 - 700, than it is correct.
In situation of using Lambda Sensor adjusting the power of blower would be executed automatically
by enlarging or reducing air flow.
Table No. 1
3. Function of modulation of burner power:
The boiler is equipped with the function of modulation of burner power.
The above-mentioned function starts operating in the moment of achievement by the boiler
temperature set by user (eg. 60
o
) and starts reducing the power of the burner (by modulating
simultaneously the parameters of van and fuel feeding). The function of modulation will reduce
the burner power till the moment of achievement by boiler temperature about 5
o
higher and after
achievement of this temperature the boiler stops fuel feeding and burns fuel left on the burner
and afterwards switches off automatically or burner power will be enlarging in case of
temperature fall.
In relation with necessity of burning fuel to end and cleaning combustion chamber the boiler
should periodically be switched off.
In the boiler controller is applied the function of return to "factory presets”, permitting on restoration
of Manufacturer presets previously altered by user or servicemen.
page 17
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