Control Unit Rego 637 - IVT Greenline HT PlusC User Manual

Control unit Rego 637

Control unit Rego 637
The control unit Rego 637 is the brains of the heat pump. It makes sure the
heat pump gives the best energy savings and that it runs for many years.
The control unit controls and monitors the heating and hot water supply in
your house. The monitoring function is especially important. It shuts down
the heat pump in the event of operational disturbances so that no critical
parts are damaged.
Additional heat gives more output
When the heat pump can not manage to heat the house by itself, for
example, if there is a considerable drop in the outdoor temperature, the
control unit ensures the additional heat source is connected. Together
the heat pump and additional heat guarantee the right temperature in the
house. Additional heat in the Greenline HT Plus is provided by a built
in electric cassette. Additional heat can never completely take over the
heating from the heat pump. It only adds the output necessary for the heat
pump to be able to produce the right temperature. When the heat pump
can once again manage heating on its own the additional heat is automati-
cally disconnected.
Hot water is given priority over heating water
In a house with water based heating a difference is made between heating
water and hot water. The heating water is for radiators/fl oor heating
and hot water is for showers and taps. Hot water is heated in a hot water
cylinder. The hot water cylinder is fi tted with a sensor that senses the
temperature of the hot water. In Greenline HT Plus C there is a hot
water cylinder inside the heat pump while Greenline HT Plus E has an
external hot water heater. The heating water passes through the hot water
cylinder's outer shell and heats up the hot water cylinder's inner tank. The
control unit makes sure the heating of hot water is always given priority
over the heating of the heating water. This means you never need to be
without hot water. The control unit controls a three-way valve that switches
between heating the heating water and hot water. Once the hot water
has been heated the three-way valve switches so that the heating water is
heated.
Three-way
valve
Electric
cassette
(additional
heat)
Control unit
Rego 637
Hot water
Heating water
10
Double-shelled
hot water heater