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BOILER SYSTEMS AND OPERATION
CONTROLLER MANUAL – SFC/SFB SERIES BOILERS
OPERATIONAL MODES
Below are various operational modes:
The unit is switched off. The unit is connected to power but has been turned off.
In this mode, the display view shows:
• The Dot.
• The pressure in the boiler loop on the left display.
• A line in the right display.
The unit is switched on and is ready for a heat demand. The unit is turned on
and is ready to respond to a request for domestic hot water or space heating. In
this mode, the display view shows the Dot.
The unit is in operation and is supplying domestic hot water. The unit is running
on a domestic hot water call. In this mode, the display view shows the:
• Dot.
• Flame. The burner is switched on.
• Faucet symbol.
The unit is in operation and is supplying space heating water. The unit is running
on a space heating call. In this mode, the display view shows the:
• Dot.
• Flame to indicate that the burner is switched on.
• Radiator symbol.
