Buderus Logamatic 2107 Installation And Service Instructions

11 DHW recirculation pump
The DHW recirculation pump ensures a constant supply of hot water to the taps.
It is automatically activated with DHW heating and the pump runs in intermittent
or continuous mode if at least one heating circuit is in normal heating mode (day
mode), or if DHW heating is in day mode.
The DHW recirculation pump runs continuously in the "ON" position.
The factory default is "2", i.e. 2 pump runs per hour, running for 3 minutes each
time (Fig. 10).
The intermittent mode may be set to 1 to 6 pump starts per hour in order to
minimize the operating costs of the recirculation pump. This setting saves
energy while ensuring comfort.
Fig. 10 Illustration of the DHW recirculation pump running time with factory setting 2
3
3 minutes
ON
OFF
1 hour
Logamatic 2107 controls - We reserve the right to make any changes due to technical modifications. 47
11
DHW recirculation pump

Buderus Logamatic 2107 Specifications

General

Category	Control Systems
Type	Heating Control Unit
Voltage	230 V
Frequency	50 Hz
Protection class	IP20
Ambient temperature	0°C
Application	Heating systems