Setting The Dhw Temperature Value; Entering The Heater Water Temperature; Setting The Pump Post-Purge Period - Buderus Logamax plus GB142-24 Installation And Servicing Instructions

BC10 basic controller

10.3.2 Setting the DHW temperature value

Turn the "DHW temperature" rotary knob to set the
desired temperature of the hot water in the hot-water
tank.
Condition
0 Off
1
Eco Economy mode,
Hot water temperature 140 °F
(60 °C)
86 – 140 Direct setting on BC10 in °F
Aut Entry via thermostat
(presetting)
Table 11 Settings of "DHW temperature" knob
1
This function has been optimized for appliances with combined DHW heating (combi-units).
2
The heating program (timer) of the room control unit remains active, as a result of which no hot water is heated during night-time operation.
3
The LED under the rotary knob lights up if the DHW temperature is below the target value (heat request for DHW).

10.3.3 Entering the heater water temperature

Turn the "heater water temperature" knob to set the
upper limit value of the heater water for the heating
operation. This limitation does not apply to DHW
preparation.
Condition
0 Off
86 – 190 Direct setting on BC10 in °F
(86 – 190 °F = 30 – 90 °C)
Aut Entry via thermostat
(presetting)
Table 12 Settings of "heater water temperature" rotary knob
1
The LED under the rotary knob lights up when the heating system is switched on and heat is requested. In summer mode the heating system is
switched off (LED off).

10.3.4 Setting the pump post-purge period

A pump must be connected to PK (see fig. 23, pos. 7) of
the external connection board in order to be able to set
the pump run over time.
CAUTION
– Set the appliance primary pump post-purge
period to 24 hours if the heating system is
controlled by room temperature sensor and
there is a risk of parts of the heating system
that are outside the coverage of the room
thermostat freezing (e. g. radiators in a
garage; constant circulation).
Press and hold the "Chimney Sweep"
"Service" buttons until the display shows "
Press the "Service"
" ". The heating system has been factory-set to a
pump post-purge period of 5 minutes.
We reserve the right to make any changes due to technical modifications!
Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004
Explanation
No hot water supply (only heating mode).
The DHW will only be reheated to 140 °F (60 °C), if the temperature has
signifcantly fallen. This reduces the number of burner starts and saves energy.
As a result the water may be a bit colder initially.
The temperature set on the BC10 is a temperature that cannot be changed using
a RC thermostat.
The temperature is set on the thermostat (e. g. RC30). If no thermostat is
connected, the maximum DHW temperature is 140 °F (60 °C).
Explanation
No supply to heating system (only DHW operation).
The temperature set on the BC10 is a temperature that cannot be changed
using a RC thermostat. Supply temperature does not rise above the set
temperature.
The temperature is automatically determined on the basis of the heating
characteristic. If no thermostat is connected, the maximum heater temperature
is 190 °F (90 °C).
and
button. The display shows
110
100 120
90 130
140
110 130
150
90
170
190
+
".
Buderus Hydronic Systems • http://www.buderus.net
10
LED
Off
2
On
2
On
2
On
LED
Off
1
On
1
On
41