The Control Unit's Two Operating Modes - IVT Optima 1000 Assembly, Commissioning And Maintenance Manual

Control unit Rego 603

The control unit's two operating modes

When a heat pump is installed it must be setup for a specifi c operating
mode. An operating mode relates to the heat pump's working situation
which is dependent on the prevailing conditions, for example, whether an
electric or oil-fi red boiler is to be connected.
The Optima heat pump provides for two different operating modes:
operating mode A and operating mode B. It is the task of the installer to
adapt the heat pump to the operating mode in question.
Operating mode A - Heat pump with external
electric cassette
On delivery the heat pump is set to operating mode A. This means the heat
pump works with additional heat provided by an external electric cassette.
Operating mode A is based on the installation of a sensor on the outside of
the house. The sensor sends information about the outdoor temperature to
the control unit. The control unit controls the production of heat according
to an adjustable heat curve. The control unit can also control heat produc-
tion based on an extra heat curve. See the heading Set extra heat curve with
mixing valve. This is applicable, for example, when you combine radiators
with fl oor heating.
When there is a hot water heater in the system, the heat pump always heats
the hot water before the heating water. When help is required for heating,
the electric cassette is controlled from the heat pump.
Operating mode B - Heat pump together with
mixed additional heat
Operating mode B is based on the heat pump working together with a
mixed additional heat source, for example, an existing electric/oil-fi red
boiler. This means the heat pump utilises the help of the external additional
heat when necessary. The control unit Rego 603 can not use an extra
heat curve in operating mode B. In general operating mode B works like
operating mode A, except that operating mode B lacks some functions.
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