Expert area
Part 2: Overview of display values and settings
36
Installation
Designation Value
range
Default IV
T-WARM UP
10°C - 85°C
35°C
MIN-DELIMI
00, 01, 02
00
HYSTERESIS
2K – 20K
5 K
HYST TIME
00 min – 30
min
00 min
See following pages for continuation
T-WARM UP (Warm-up relief)
(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-HS +
HYSTERESIS (Standard 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-HS. at heating requirements (Pump release).
02 = Permanent minimum delimiter (24) The HS holds 24h
at least the set minimum temperature MIN T-HS. at
heating requirements (Pump release).
HYSTERESIS
(Dyn. switching hysteresis stage 1)
with HYST TIME
(Hysteresis time)
Function for optimising boiler operation with differing boiler
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
"HYST 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 boiler from heating to unnecessary high
temperatures.
