KOB PYROT - Controller, DHW Cylinder B2; Controller, DHW Circulation

Controller, DHW cylinder B2
T
A
Pump
B
Control valve
C
Sensor QAZ 21.5220
D
Contact sensor QAD 21
Part no. 7379 400
When its temperature drops, the DHW is reheated via the integral heat
exchanger directly by the boiler or by the buffer cylinder. This is
dependent on a corresponding difference in temperature (either dif-
ferential temperature or fixed temperature control unit).
The flow rate of the heating water is controlled via the return temper-
ature (flow control). This results in optimum buffer cylinder stratification
with sustained high temperature at the cylinder flow. The heating peri-
ods (individual day and seven-day program) can be adjusted via the
integrated time switch.
Standard delivery:
■ Button, DHW cylinder
■ Controller output for pump and control valve
■ Contact sensor QAD 21
■ Sensor QAZ 21.5220 with sensor well ½" x 200 mm
Controller, DHW circulation
T
A
Pump
Part no. 7387 849
The circulation periods (individual day and seven-day program) can
be adjusted via the integral time switch.
The start-up duration of the DHW circulation pump can be adjusted via
timed cycling.
Standard delivery:
■ Button, DHW circulation
■ Controller output for pump
Control unit
(cont.)
PYROT
19
5822 516 GB
3