Vaillant sensoCOMFORT VRC 720/3, Operating And Installation Instruction

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Operating and installation instructions 0020334316_02
Source regeneration: The system control switches the Cooling function on and guides
the heat from the living room back to the earth via the heat pump.
Prerequisite:
–
The Automatic cooling: function has been activated.
–
The Absence function is active.
Factory setting: No
Current room air humidity: %rel Current room air humidity, measured using the installed humidity
sensor
Current dew point: °C The system control calculates the current dew point in the living
room.
Hybrid manager: Factory setting: Bival. point
triVAl The heat generator is selected based on the set tariffs in relation
to the heat demand.
Bival. point The heat generator is selected based on the outdoor temperature
(
Heating bivalence point: °C and Alternative point: ).
Heating bivalence point: °C If the outdoor temperature falls below the set value, the system
control enables the back-up boiler to operate in parallel with the
heat pump in heating mode.
Prerequisite:
Bival. point is selected in the Hybrid manager:
function.
Factory setting: -5 °C
DHW bivalence point: °C If the outdoor temperature falls below the set value, the system
control activates the back-up boiler in parallel with the heat pump.
Factory setting: -7 °C
Heating alternative point: °C If the outdoor temperature falls below the set value, the system
control switches the heat pump off and the back-up boiler meets
the heat demand in heating mode.
Prerequisite:
Bival. point is selected in the Hybrid manager:
function.
Factory setting:
Off
DHW alternative point: °C If the outdoor temperature falls below the set value, the system
control switches the heat pump off and the back-up boiler meets
the heat demand in domestic hot water mode.
Factory setting:
Off
LHM temperature: °C Set a low target flow temperature. If the heat pump fails, the back-
up boiler fulfils the heat demand, which leads to higher heating
costs. The end user should recognise that heat loss means that
there is a problem with the heat pump.
The end user can use the
Mode: Temporary mode: Back-up
heater function to enable the back-up boiler and therefore deac-
tivate the target flow temperature that is set here.
Factory setting: 25 °C
Back-up boiler type: Select a type for the heat generator that is also installed. An incor-
rect selection may lead to increased costs.
Prerequisite:
triVAl is selected in the Hybrid manager: function.
Factory setting: Condensing