Connecting The D Series To The Heating System And Operating Mode A - IVT GreenlineC Manual To Installation, Commissioning And Maintenance

Connecting the D series to the heating system and operating mode A

Application:
The principle for operating mode A is based on liquid condensation and additional heat from an immersion heater.
The built-in control unit Rego600 controls the heat pump with an outdoor sensor GT2 and return sensor GT1
according to outdoor compensated control curve. When the heat pump is not able to meet the heating
requirements, the water heater starts automatically and together with the heat pump provides the required tempera-
ture. Hot water is prioritised and controlled by a sensor, GT3 in the hot water heater. While the heat pump is
heating the water in the immersion heater, the heating system is disconnected temporarily through the 3-way
valve. Radiotor operation continues when the immersion heater is hot enough.
Rego600 can also control other curves together with a mixing valve. The mixer curve must be set lower than the
curve for the rest of the heating system. This extra function is used e.g. for floor heating systems that demand a
lower temperature.
Connecting the sensors:
External sensors GT1 and GT2 must always be connected. GT3 is connected if the heat pump is to produce hot
water. Sensor GT4 is connected if the mixing valve curve is going to be used and GT5 if the room sensor is
required.
*Acc. tank:
A 100-300-litre accumulator tank is recommended for systems with separate controls for e.g. floor heating to
ensure good operational times for the heat pump. For this solution, GT1 is mounted in accordance with *GT1.
(X) The distance between both cut offs must not be more than 10 times the dimension of the pipe.
It is also possible to control other heating
systems with a mixing valve. For example,
for a combination of radiator and floor
heating systems.
*ACC. TANK
DHW
CW
HOT WATER HEATER
MIXED HEATING SYSTEM
MIXING VALVE
P1, RADIATOR PUMP
3-way valve
ELECTRIC WATER HEATER
Safety
valve
39
FILTER BALL
HEAT PUMP
HEAT TRANS-
FER
SYSTEM