Setting The Dhw Temperature Value; Entering The Space Heating Water Temperature; Setting The Pump Post-Purge Period; Shutting Down The System - Buderus Logamax plus GB142-24 Installation Instructions Manual

10

Shutting down the system

9.3.2

Setting the DHW temperature value

▶ Turn the "DHW temperature"
temperature of the hot water in the hot-water tank.
Condition Explanation
0 Off No hot water supply (only heating
mode).
1)
Eco Economy mode, The DHW will only be reheated to
Hot water 140 °F (60 °C), if the
2)
temperature temperature has significantly
140 °F (60 °C) fallen. This reduces the number
of burner starts and saves
energy. As a result the water may
be a bit colder initially.
86 – 140 Direct setting on The temperature set on the BC10
2)
BC10 in °F is a temperature that cannot be
changed using a RC thermostat.
Aut Entry via The temperature is set on the
2)
thermostat thermostat (e. g. RC30). If no
(presetting) thermostat is connected, the
maximum DHW temperature is
140 °F (60 °C).
Table 9 Settings of "DHW temperature" knob
1)
This function has been optimized for boilers 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 heating program (timer) of the room control unit remains active, as a result
of which no hot water is heated during night-time operation.
9.3.3

Entering the space heating water temperature

▶ Turn the "space heating water temperature"
upper limit value of the heater water for the heating operation.
This limitation does not apply to DHW preparation.
Condition Explanation
0 Off No supply to heating system (only
DHW heating operation).
86 – 190 Direct setting on The temperature set on the BC10
BC10 in °F (86 – is a temperature that cannot be
190 °F = 30 – changed using a RC thermostat.
90 °C) Supply temperature does not rise
above the set temperature.
Aut Entry via The temperature is automatically
thermostat determined on the basis of the
(presetting) heating characteristic. If no
thermostat is connected, the
maximum heater temperature is
190 °F (90 °C).
Table 10 Settings of "space heating 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).
28
h
rotary knob to set the desired
i
knob to set the
9.3.4

Setting the pump post-purge period

A pump must be connected to PK ( fig. 31, [7]) of the external
connection board in order to be able to set the pump run over time.
LED CAUTION:
▶ Set the boiler primary pump post-purge period to
Off
24 hours if the heating system is controlled by room
temperature sensor and there is a risk of parts of the
3)
On
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"
until the display shows "L- -"(= [l/-/-|).
▶ Press the "Service"
3)
On
system has been factory-set to a pump post-purge period of
5 minutes.
▶ Press the "Chimney Sweep"
3)
On
pump post-purge period. The pump post-purge period can be set
from 5 – 60 minutes (F 5 – F60) or to 24 hours (F1d).
▶ Press the "Service"
NOTICE:
▶ On thermostat only systems a 5 to 10 minute post-
purge setting is recommended to purge heat from the
boiler.
10 Shutting down the system
DANGER:
The heating system may freeze if it is not operational in
times of frost. Protect the heating system against
freezing if there is a danger of frost affecting the system.
Drain the heating system water from the lowest point of
LED
the heating system. The vent screw at the highest point
Off
of the heating system must then be open.
1)
On
DANGER:
Should overheating occur or gas supply fail to shut off,
turn off the manual gas control valve to the boiler.
1)
10.1

Shut down the heating system using the control unit

On
Shut down your heating system using the BC10 basic controller. When
the BC10 basic controller is shut down, the burner is also switched off
automatically. Further information on how to operate the BC10 basic
controller can be found in chapter 9 "BC10 basic controller", page 25.
▶ Switch off the heating system using the main switch b.
▶ Close the main shut-off valve or the gas shut-off valve.
10.2 Shutting down the heating system in the event of an
emergency
You must immediately close the main shut-off valve or gas shut-off valve
and disconnect the power from the heating system.
▶ Close the main shut-off valve.
Logamax plus GB142-24/30/45/60 – 6720820104 (2017/05)
d
and "Service"
e
button. The display shows "F05". The heating
d c
or "Reset" buttons to set the
e
button to confirm the setting.
e
buttons