Setting Into Operation; Power Connection; Heating With Room Thermostat; Heating With Day/Night Automatic Controller - Kroll 25S Notice D'instruction

25S – 110S
• An area of 1 m around the heater is to be
kept clear to ensure an unobstructed flow of
air to and from the heater.
• Except: Ducted versions
fig. 5:
Put a label: Keep 1 m distance to wall!
• Ventilation
Sufficient air for combustion must be availa-
ble (avoid low pressure in the installation
room). This is assured when: e.g. the
volume of the room in m³ is a minimum of
10 times the rated heat load in kW of all
the heating appliances in the room. Normal
circulation is to be guaranteed via windows
and doors.
If low pressure or dust in the room are not
avoidable, the burner must be encased and
the air supply taken from outside the room.
• Installation of the duct system: Pay attention
to the maximum pressure.
If this is exceeded, the air volume of the fan
will fall and both, the flue gas and warm air
temperature will rise.

2.5 Setting into operation

2.5.1 Power connection

The electric connection of the machine must
be done by authorized personal according to
DINEN 50 156-1(VDE0116-1:2005-3) and
DINEN 60 335-1(VDE0700-1)
The space heater and burner are controlled by
the selector switch and by means of a room ther-
mostat or via control for week program.
12
Notice

2.5.2 Heating with room thermostat

fig. 6: Set selector switch to
fig. 7: Set the desired room temperature
The space heater heats up. When internal tem-
perature of the appliance reaches +40 °C (factory
setting), the fan is set into operation.The burner
switches off when the set room temperature is
reached. The burner is automatically switched on
again when the room temperature falls below this
value.
2.5.3 Heating with day/night automatic
controller
fig. 8: Install the day/night automatic controller and pro-
gram it according to the manual
fig. 9: Then proceed the same way as with "heating with
room thermostat"

2.5.4 Heating without room thermostat

fig. 10: Set selector switch to
The space heater heats up. When internal tem-
perature of the appliance reaches +40 °C (factory
setting), the fan is set into operation. If the set
temperature (factory setting +80 °C) is exceeded,
or if the temperature falls below this level, the
English
Heating
Heating