9
USER’S INFORMATION MANUAL
COMBI BOILERS 99
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125
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160
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199
TANKLESS DOMESTIC HOT WATER
MODES
Tankless Domestic Hot Water - Standard and ECO
Comfort Modes
Standard Mode (OFF): The unit will respond to a call for domestic hot water as
a priority over the space heating demand. When the domestic hot water demand
is satised the unit will return to the space heating load if the load is still calling.
The heat exchanger will not maintain its domestic hot water temperature between
demands for hot water.
Comfort Mode (ON): The heat exchanger is maintained at the DHW
temperature.
ECO Comfort Mode (ECO): This mode operates like the Comfort Mode but has
the added advantage of learning when the domestic hot water is used. During the
low use periods, the heat exchanger is allowed to cool.
To switch between the 3 modes:
1. Touch the area above the white dot.
2. Touch the Faucet button twice.
3. To change the DHW mode, touch the Plus or Minus buttons.
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