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Flex Fuel Owner’s Manual
March 2011
If you press the control knob on the starting screen, the menu “BASIC BOILER SETTINGS” will appear
(Shown Below). Press the control knob again and the cursor moves to the first menu item. By turning
the control knob to the right, the cursor moves to the available menu selection items.
9.1 Set Required Boiler Values
In order to set the required boiler values, select “Set required boiler values“. The screen shows following
figure:
The return flow temperature shown on the screen is the actual temperature of the return. In addition, the
status of the return increase pump is displayed.
Start Difference
If the furnace operating mode is set to “Pellets auto control” or “Bulk materials auto control” and heat is
being demanded by a system component, the furnace will first start when the furnace temperature is
lower than the set “required boiler temperature“ less the set “start difference”.
9.2 Select Furnace Operating Mode
Please refer to section 10 “Operating Modes” if you want to change the operating mode.
9.3 Boiler Cleaning
In this menu you can select to start the furnace cleaning manually by pressing the control knob.
9.4 Vacuum Output/Heat Exchanger
The heat exchanger cleaning cycle activates within the set release period depending on the furnace
operating period. It is recommended that a continuous release period is specified (00:00 – 24.00),
otherwise a situation may occur where the furnace is not released to start even though there is a call for
heat (status line “Heat exchanger cleaning waiting to be released!”).
9: Basic Furnace Settings
BASIC BOILER SETTINGS
Set required boiler values
Select boiler operating mode
Boiler cleaning
Vacuum output/heat exchanger
Set clock/date
Service menu
Alarm protocol
Output test - heat cycle
Output test - boiler
Operating hour counter
Language selection & Unit
REQUIRED BOILER VALUES
Required boiler temp: XXºF
Start difference: XXºF
Ext. boiler dem: off
Return flow temp: XXºF
Return increase pump: On
