Heating, General; Circuits For Heating; Control Methods For Heating; Time Control For Heating - IVT Greenline HC 22 Installation Manual

6

Heating, general

6.1

Circuits for heating

• Circuit 1; the first circuit is included by default in the
control unit and is controlled by the installed flow
sensor, possibly in combination with an installed
room sensor.
• Circuit 2 (mixed); control of circuit 2 is also included
by default in the control unit and only needs to be
supplemented with a mixing valve, circulation pump
and flow sensor and possibly with an additional room
sensor.
• Circuit 3-4 (mixed); control of up to 2 additional
circuits is optional. Each circuit is then fitted with a
mixing valve module, circulation pump, flow sensor
and a possible room sensor.
Circuit 1 must always be installed and used.
Circuits 2 through 4 cannot have a higher
flow temperature than circuit 1. This means
that underfloor heating on circuit 1 cannot
be combined with radiators on another
circuit. Room temperature reduction for
circuit 1 can affect other circuits in some
cases.
When the Use temperature from circuit
with highest temperature function under
Circuit 1 is used, the heat curve for Circuit
1 does not need to be adapted to the mixed
circuits. The heat pump automatically
selects the highest flow temperature set
point value.
6 720 645 504 (2011/04) en
6.2

Control methods for heating

• Outdoor sensor; a sensor is fitted on the outside wall
of the house. The sensor sends signals to the control
unit in the heat pump. Control with an outdoor sensor
means that the heat pump automatically regulates the
heating in the house depending on the outdoor
temperature. The customer determines the
temperature of the heating system in relation to the
outdoor temperature by setting the heat curve on the
control unit.
• Outdoor sensor and room sensors (one room sensor
per circuit is possible); Control with outdoor sensor
supplemented with room sensor(s) means that one
(or several) sensors are mounted in a central location
inside the house. They are connected to the heat
pump and provide the control unit with information
about the current room temperature. The signal
affects the flow temperature. For example, it falls
when the room sensor indicates a higher temperature
than the one set. Room sensors are used when factors
other than the outdoor temperature influence the
indoor temperature of the house. For example, this
can be when a stove or fan-assisted radiator is used in
the house, or if the house is sensitive to the wind or
exposed to direct sunlight.
It is only the room where the room sensor is
located that can influence regulation of the
temperature for the relevant heating circuit.
6.3

Time control for heating

• Program control; The control unit offers a possibility
to define two individual programs for time control of
the heating.
• Holiday; the control unit has a program for holiday
mode, which means that during the selected period
the room temperature changes to a lower or higher
level. The program also allows switching off hot water
production.
• External control; the control unit can make settings
for external control, which means that the
preselected function is performed when the control
unit senses an input signal.
Heating, general
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