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DHW heating
The DHW heating is used for demanding a backup heating for heating the DHW
store.
If the Loading pump option is activated, the adjustment channel Relay appears, in
which a relay can be allocated to the loading pump. The allocated relay is switched
on and off with the demand relay.
If the overrun time option is activated, the adjustment channel Duration ap-
pears, in which the overrun time can be adjusted. If the overrun time option is
activated, the loading pump relay remains switched on for the adjusted Duration
after the demand relay has been switched off.
For the control logic, 2 different modes are available:
Thermal mode:
The allocated demand relay is switched on when the temperature at the allocated
sensor 1 falls below the adjusted switch-on temperature. If the temperature at
the allocated sensor 1 exceeds the adjusted switch-off temperature, the relay is
switched off.
Boiler mode:
If the Boiler mode has been selected, another sensor can be allocated in the chan-
nel Sensor 2. The switch-on, or the switch-off conditions respectively, then have to
be fulfi lled at both sensors in order for the relay to be switched on or off.
When the Timer option is activated, a timer is indicated in which time frames for
the function can be adjusted.
Note:
For information on timer adjustment see page 11.
Heating / opt. functions / Add new function / DHW heating
Adjustment
channel
Description
Adjustment range /
selection
Factory setting
Demand
Demand relay selection
system dependent
system dependent
Loading pump Loading pump option
Yes, No
No
Relay
Loading pump relay selection
system dependent
system dependent
Overrun time Overrun option
Yes, No
No
Duration
Overrun time
1 … 10 min
1 min
Mode
Operating mode
Boiler, Therm.
Therm.
Sensor 1
Sensor 1
system dependent
system dependent
Sensor 2
Sensor 2 (only if Mode = Boiler) system dependent
system dependent
Ton
Switch-on temperature
0 … 94 °C
40 °C
Toff
Switch-off temperature
1 … 95 °C
45 °C
Timer
Timer option
Yes, No
No
Timer
Timer sub-menu
-
-
Days of the
week
Day selection
All days, Monday … Sunday,
Continue
-
Timer
Time frame adjustment
00:00 … 23:45
-
Funct.
Activation / Deactivation
Activated, Deactivated
Deactivated
Summary of Contents for BW/H Komfort HE
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