Expert area
Part 2: Overview of display values and settings
20
Set values for heat generators
Heat generator
Designation Value
range Standard
IV
Max T-HS1
30°C – 110°C
85°C
Min T-HS1
10°C – 80°C
40°C
Min T-HS2
10°C – 80°C
40°C
Max T-Header
30°C – 110°C
85°C
Min T-Header
10°C – 80°C
40°C
Warm Up Temp
10°C – 85°C
35°C
Min Delimi
00, 01, 02
00
Hysteresis
(or Hyst HS)
5K – 20K
5K
Hysteresis time
00min – 30min
00min
Time Seq-Mod
00 – 800 hours
00 hours
Block-Time
00min – 30min
00min
Hyst Burner 2
2K – 20K
2K
Gradient On/Off Off
Max reduce
1 – 20K
10K
Dyn cutoff
0.5K/min –
10K/min
2K/min
HS Cool-fct
Off/On
Off
T-HS Cool
30°C – 120°C
95°C
Use the F button [End] to exit the level
Max T-HS1
(Max. temperature Boiler)
Protects the HS from overheating / prevents
triggering the LIMITER.
!
Caution: Also works with hot water preparation.
Min T-HS1/2
(min temperature Boiler)
Decreased condensation build-up in HS with low heat
requirements. Switching the HS off is always done earlier
when achieving the HS minimum temperature MIN T-
HS1/2+ Hysteresis (standard 5K) => see also Min Delimi
Max/Min T-Header
(only for cascade)
See Max/Min T-HS 1/2.
Protection from condensate
Warm Up Temp
(Not in cascade operation)
Reduces operation in condensation zone. The circulation
pumps are switched off and the mixers are shut until the
boiler has reached the start-up temperature.
Min Delimi
(minimum delimiter HS)
(Not in cascade operation)
Decreased condensation build-up in HS with low heat
requirements. Switching the HS off is always done earlier
when achieving the HS minimum temperature Min T-HS1
+ Hysteresis (5K)
00 = Minimum delimiter for heat curve
The HS switches on if the requested temperature
has been exceeded by the using components.
01 = Minimum delimiter with heat requirement
The HS holds at least the set minimum
temperature Min T-HS1 at heating requirements
(pump release).
02 = Permanent minimum delimiter (24) The HS holds
24h at least the set minimum temperature Min T-
HS1. at heating requirements (Pump release).
Hysteresis with hysteresis time
Function for optimising the boiler operation with differing
heat-generator loads.
The effective switching hysteresis is reduced linearly after
the burner is switched on from the set Hysteresis to the
minimum hysteresis (=5K) during the hysteresis time.
Low heat consumption
In this case the higher Hysteresis setting takes effect.
Short run-times and frequent burner operation are
prevented.
High heat consumption
During longer periods of burner operation (high heating
load) the hysteresis is automatically reduced to 5K. This
prevents the heat generator from heating to
unnecessarily high temperatures.