Temperature Control; Frost Protection Mode - Dunkirk DCC-150 User's Information Manual

3.3 TEMPERATURE CONTROL

Press and respectively to adjust the CH and
DHW flow temperature (if an indirect storage tank is fitted).
When the burner is lit, display shows the symbol .
HEATING: while boiler is operating in heating mode, the
display shows the flashing symbol
temperature °F / °C.
When connected to an Outdoor Temperature Sensor,
indirectly adjusts room temperature (factory setting 68°F /
20°C).
DHW: While boiler is operating in DHW mode, display
shows the flashing symbol
°F / °C.
3.4 BOILER INFORMATION MENU (See Below)
Press and hold for at least 1 second, to display the
information indicated in the table. Press
DESCRIPTION
00
Secondary fault internal code
01
Heating flow temperature (°F/°C)
02
Outdoor temperature (°F/°C)
03
Indirect Tank DHW temperature (boiler CH only)
Domestic hot water temperature (boiler with plate
04
exchanger)
05
Water pressure in heating system (PSI/bar)
06
Heating return temperature (°F/°C)
07
Thermo fuse status (000/001)
08
Not used
3.5 SHUTTING OFF THE BOILER
To turn off the boiler, disconnect the electric power supply.
In the "Off" operating mode
electrical circuits remain powered and the frost protection
function remains active.

3.6 FROST PROTECTION MODE

The electronic boiler management system includes a
"frost protection" function for the heating system which,
when delivery temperature falls below 41°F (5°C), lights
the burner until a delivery temperature of 86°F (30°C) is
reached.
This function is only operative if the boiler is electrically
powered and there is gas with normal system pressure and
the flue is not blocked.
3 - CONTROL
and the heating flow
and heating flow temperature
to exit.
the boiler stays off but the
DESCRIPTION
09
Setpoint Central Heating (°F/°C)
10/11
Manufacturing information
12
Flue sensor temperature (°F/°C)
13
Manufacturing information
14
Identification Open Therm communication
15
Manufacturing information
16
Manufacturing information
17
Fan speed ("i17"x100)
18
Manufacturing information
5
PN 240011960 REV A, [01/01/2018]