Part 2: Overview of display values and settings
Expert
area
29
The parameters in this level change in accordance with
the heating circuit function that has been selected
[HC FUNCTION]
Heatcircuit 1 / 2
Designation Value
range
Standard
IV
HC Function
Standard,
T-Circuit Fxd,
Pool, HW,
Return
Standard
Pump Mode
Standard,
Heating limits,
Only timeprog,
Continuous
Standard
Mixer Open
(not for HW circuit)
5 – 25
18
Mixer Close
(not for HW circuit)
5 – 25
12
Max T-Flow
20°C – 110°C
80°C
Min T-Flow
10°C – 110°C
10°C
T-Flow cooling
OFF, CLOSE,
10°C – 25°C
15°C
T-Frost protect
----;
(-15)°C – (5)°C
0°C
Outdoor delay
0:00 – 24:00
0:00
Slope Offset
0K – 50K
5K
B-Heat Sink
Off/On
On
Use the F button [End] to exit the level
HC Function
(heating circuit function selection)
Standard =>favorite heating circuit
T-Circuit Fxd => Control for fixed flow temperatures
During the heating periods (see heating program ) the
heating circuit is operated with a fixed preset flow
temperature [T-Flow Day], and during reduced mode
operation with a fixed preset flow temperature
[T-Flow Night] accordingly.
Pool => Pool control (only Heatcircuit 2)
This function can be used to heat a swimming pool. The
mixer controls the flow temperature for the swimming
pool heat exchanger. The swimming pool water
temperature sensor is connected to the room sensor
[F15] for the heating circuit (see FBR).
The flow temperature control operates like normal room
control [Room Influence].
The set value for the water temperature can be entered in
the user area of the associated heating circuit level
[T-Pool 1/2/3]. The heating program operates. No heating
takes place during the reduction period
The water temperature and the current set value are
displayed in the display level [T-Pool / T-Pool Desired].
HW => Hot water circuit
This function can be used to operate additional hot water
circuits. The heating circuit flow sensor is located in the
hot water storage tank.
The hot water temperature set value can be entered in
the user area of the associated heating circuit level [T-
DHW 1/2/3]. The heating program for the heating circuit
acts as an enable program for the storage tank. The
storage tank set value is set to 10°C during the reduction
period.
The boiler controller hot water priority function can be
used (partial priority acts like priority).
Return flow => Return flow temperature increase via
mixer (Heatcircuit 2 only)
The heating circuit flow sensor is used as a boiler return
flow sensor. The mixer controls to the heating circuit set
value for 24 hours [Min T-Flow].
Installation tip:
Mixer Open => boiler flow is fed into the
return (=> return flow temperature increase)
Mixer Closed => heating circuit return is passed through.
When the mixer is open it must be ensured that there is
circulation through the boiler (boiler pump).
Pump Mode
(pump operating modes)
The circulation pumps are switched off if heating is not
required. The mixer motors are closed at the same time
=> "The heating circuit is switched off".
(Switch on with 1K hysteresis)
Standard => Standard circulation pump control
Room temperature-dependent control
OFF: Room temperature > room set value + 1K
Weather-dependent control during heating operation
OFF: Outside temperature > room set value
Weather-dependent control during reduction
operation
(Room Influence =0)
OFF: The switch-off occurs during the transition to
reduction operation. The pump runs continuously after
being switched on.
ON: Room temperature < room set value
(Room Influence = "--")
OFF: Flow temperature setting < 20°C.
Heating limits => Pump switching in accordance with
heating limits
Heating
time
OFF: Outside temperature > set heating limit day +1K
ON: Outside temperature < set heating limit day
Reduction
period
OFF: Outside temperature > set heating limit night +1K
ON: Outside temperature < set heating limit night
Only timeprog => Pump switching as per heating program
Heating time: Pump is ON; Heating circuit is enabled
Reduction period: Pump is OFF; Heating circuit is
blocked
Continuous
The pump runs continuously for 24 hours! The heating
circuit is permanently enabled.