32
Installation
Commissioning
Settings
Data comm
unication
Tr
oubleshooting
en
Thermal disinfection
This function helps to contain the spread of Legionella in DHW stores by system-
atically activating the backup heating.
One or two sensors can be selected for this function.
For thermal disinfection, the temperature at the allocated sensor has to be mon-
itored. Protection is ensured when, during the monitoring period, the disinfection
temperature is continuously exceeded for the entire disinfection period.
The monitoring period starts as soon as the temperature at the allocated sensor
falls below the disinfection temperature. When the monitoring period ends, the al-
located reference relay activates the backup heating. The disinfection period starts,
if the temperature at the allocated sensor exceeds the disinfection temperature.
Thermal disinfection can only be completed when the disinfection temperature
is exceeded for the duration of the disinfection period without any interruption.
If the Zone mode is selected, the switch-on and switch-off conditions must be
fulfilled at 2 sensors for the relay to switch on or off respectively.
Starting time delay
If the starting delay option is activated, a starting time for the thermal disinfection
with starting delay can be adjusted. The activation of the backup heating is then
delayed until that starting time after the monitoring period has ended.
If the monitoring period ends, for example, at 12:00 o'clock, and the starting time
has been set to 18:00, the reference relay will be energised with a delay of 6 hours
at 18:00 instead of 12:00 o'clock.
Heating / Opt. functions / Add new function / Th. disinfection
Adjustment
channel
Description
Adjustment range /
selection
Factory setting
Mode
Mode selection
Therm., Zone
Therm.
Sensor 1
Reference sensor 1 selection
system dependent
system dependent
Sensor 2
Reference sensor 2 selection
(if mode = Zone)
system dependent
system dependent
Interval
Monitoring period
0 … 30, 1 … 23 (dd:hh) 1d 0h
Temperature Disinfection temperature
45 … 90 °C
60 °C
Duration
Disinfection period
0.5 … 24.0 h
1.0 h
Start. time
Starting delay option
Yes, No
No
Start. time
Starting time
00:00 … 23:30
20:00
Hyst. on
Switch-on hysteresis
2 … 20 K
5 K
Hyst. off
Switch-off hysteresis
1 … 19 K
2 K
Disinf. pump Disinfection pump option
Yes, No
Yes
Relay
Disinfection pump relay
system dependent
system dependent
Valve
Valve option
Yes, No
No
Relay
Relay Valve
system dependent
system dependent
Demand
Demand relay selection
Yes, No
No
Relay
Relay Demand
system dependent
system dependent
Boiler
loading p.
Option boiler loading pump
Yes, No
No
Relay
Relay selection Boiler loading pump system dependent
system dependent
SFB Off
Solid fuel boiler off option
Yes, No
No
Funct.
Activation / Deactivation
Activated / Deactivated Activated
Summary of Contents for Regtronic RH HT
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