BioLogic BIODOM 27A - Parameters

10.3. PARAMETERS
PARAMETERS - Heating boiler
Limiting the maximum power of the boiler(1-5°C)
The user can limit the maximum boiler power from min. 1 to max. 5. The
boiler will not raise the power above the set value.
Desired boiler water temperature(55 - 95° C)
The user can select the desired boiler water temperature between 50-95° C
recommended 65-85°C.
This setting is also on the main screen of the boiler - Boiler temperature.
Buffer temperature difference(0 - 20° C) [5° C] -param.86
Desired buffer temperature =
Desired temp. boiler water - Buffer temp. difference (this param.)
The factory setting is 5° C
Dif. start of the buffer pump(0 - 20° C) [5° C] -param.50
Temp. at which the boiler begins to heat the buffer tank:
when sensor A2 (top of the buffer) < Desired temp. Buffer - this parameter (50)
Dif. stop buffer pump(0 - 20° C) [5° C] -param.85
Temp. in which the boiler stops heating the buffer tank:
when sensor T3 (buffer tank bottom) > Desired temp. of boiler water - this parameter
(85)
Return hysteresis(0 - 20° C) -for installer only
Temperature difference between the ow and return line at which the boiler pump is
switched off.
 Condensation protection
 Prevents forced draft through the boiler into the chimney and only cooling of the
boiler Factory settings: Biodom 21, 27C5, 27A, 54 = 7
Flow calibration (0-30000) - "SCAL" - for installer only
Correction factor of air ow through the boiler to the fan control algorithm (FAN 1). The
higher the "SCAL" value, the higher the air ow value is recorded by the controller, thus
reducing the FAN 1 voltage to maintain the set air ow value and vice versa.
Thermostat operating mode- for installer only
Temp. in which the boiler stops heating the buffer tank:
when sensor T3 (buffer tank bottom) > Desired temp. of boiler water - this parameter
(85)
Desired boiler water temperature - [55 - 95° C]
When the room temperature reaches the set gure (the thermostat switches off), if the
mode is set to:
0 - The circulation pump is switched off, the boiler operates up to the set boiler temp.
(+5°C).
1 - The boiler is switched off, the pump runs until the boiler drops to the minimum
boiler temp.
2 - The boiler and pump are switched off.
www.biodom27.si
34 BIODOM 27A