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Vitodens 100-W, B1HA series & B1KA Combi Operating
Service Instructions for Your Heating System
Information
Terminology
Temperature and pressure relief valve
Safety equipment that must be installed in the hot water
tank by your heating contractor. The safety valve opens
automatically to prevent excess pressure in the DHW tank.
Drinking water filter (if installed)
A device that removes solids from potable water.
The drinking water filter is installed in the cold water
pipe upstream of the DHW tank or the instantaneous
water heater.
For reasons of good hygiene:
replace filter element on non-backwashing filters
every 6 months (visual inspection every 2 months),
on backwashing filters, backwash every 2 months.
Supply temperature
The temperature of the heating water that flows to the
radiators (in the supply line). Accordingly, the temperature
of the heating water that flows from the radiators to
the boiler (in the return line) is referred to as return
temperature.
Weather-compensated operation
In weather-compensated mode, the flow temperature
is controlled according to the outside temperature. This
means that no unnecessary heat is generated in order
to heat the rooms to the required room temperature
you selected.
The outside temperature is captured and transmitted to
the control unit by a sensor fitted outside the building.
Constant temperature operation
In constant temperature operation, the heating water is
constantly (continuously) heated to the selected boiler
water temperature.
Supply water temperature
The temperature of the heating water that flows to the
radiators (roughly equal to boiler water temperature).
Boiler water temperature
The heating water in the boiler (boiler water) is heated
to the temperature set at the control unit. This
temperature is referred to as boiler water temperature.
Room air dependent operation
The combustion air is drawn from the room where the
boiler is installed.
Direct vent operation
The combustion air is drawn from outside the building.
The flue gases are vented outside the building.
Room temperature-dependent operation
A room temperature thermostat captures the room
temperature and compares this with the required room
temperature you set. If the room temperature is lower
than the required value, the boiler is switched on; if the
room temperature is higher than the required value,
the boiler is switched off.
Make any settings on the connected room temperature
controller using the relevant operating instructions.
Note: The heating water temperature must be set high
enough in order to achieve the required room
temperature.
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