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Heating circuit data
CFB 840
6 720 802 836 (2012/05)
9.3.5 Selecting the maximum shutdown temperature
The burner will be switched OFF no later than when the boiler flow
temperature reaches the maximum shutdown temperature.
Modify the maximum shutdown temperature only if necessary.
B
Call up the service level.
GENERAL PARAM.
appears as the first main menu.
B
Turn the rotary dial until main menu
Boiler param.
appears.
B
Press
Display
to call up a submenu.
B
Turn the rotary dial until submenu
Maximum shutdown temp
appears.
B
Hold down button
Display
and turn the rotary dial until the required
value is shown.
B
Release
Display
to save your input.
B
Press
Back
to return to the next higher level.
9.3.6 Setting the maximum flue gas temperature limit
A flue gas temperature sensor must be installed to measure the flue gas
temperature. A service message may be issued via a telecontrol system
if the "maximum flue gas temperature" is exceeded. The boiler should
then be serviced.
A fault message is issued if the temperature limit at the flue gas sensor
(optional accessory) is exceeded.
B
Call up the service level.
GENERAL PARAM.
appears as the first main menu.
B
Turn the rotary dial until main menu
Boiler param.
appears.
B
Press
Display
to call up a submenu.
B
Turn the rotary dial until submenu
Maximum Flue gas temp.
appears.
B
Hold down button
Display
and turn the rotary dial until the required
value is shown.
B
Release
Display
to save your input.
B
Press
Back
to return to the next higher level.
10
Heating circuit data
10.1 Adjusting the heating system
The following heating systems can be selected:
B
Call up the service level.
GENERAL PARAM.
appears as the first main menu.
B
Turn the rotary dial until main menu
Heat.circuit
+No. is displayed.
B
Press
Display
to call up a submenu.
Heating system
is shown as first main menu.
B
Hold down button
Display
and turn the rotary dial until the required
value is shown.
Fig. 26 Select the heating system
B
Release
Display
to save your input.
B
Press
Back
to return to the next higher level.
At setting >75 °C the thermostat must be set to 90 °C
(
Æ
Input range
Factory setting
Maximum
shutdown temp
70 °C – 99 °C
85 °C
Table 35 Setting range Maximum shutdown temperature
Input range
Factory setting
Maximum
Flue gas temp.
none
50 °C – 250 °C
none
Table 36 Setting range Maximum flue gas temperature
Heating
system
Explanation
None
The heating circuit function is not required. All
subsequent submenu points relating to
Heat circ.
data
no longer apply.
Radiator,
convector
heater
The heating curve is automatically calculated for
radiators or convector heaters, subject to the required
curve.
Underfloor
A flatter heating curve is automatically calculated for
lower design temperatures.
Base point
The level of the flow temperature is a linear
consequence of the outside temperature. The
resulting heating curve connects as a straight line the
low end with a second point that depends on the
design temperature.
Constant
This system must be used for the controlling of a
swimming pool heating system or to pre-control
ventilation circuits, if the heating must always provide
the same, set flow temperature, independent from the
outside temperature. If this system is selected, it is
not possible to install a remote control for this heating
circuit.
Room
controller
The required CH flow temperature is dependent only
on the measured room temperature. For this, you
must install a remote control inside the room. The
heating system is switched off if the room becomes
too hot.
Table 37 Heating systems
It is recommended to use the heating system
Under-
floor
only in conjunction with mixed heating circuits.
HEAT CIRC. DATA 2
Heating system
Underfloor
6 720 802 836-40.1TL
