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

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

Application:
The principle for operating mode B is based on liquid condensation and additional heat from an oil-fired boiler
using a mixing valve. 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 oil-fired boiler starts automatically and together with the heat pump prov-
ides the required temperature. 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. If the oli-fired boiler is in operation it provides the required temperature
to the radiator system. Radiotor operation continues when the immersion heater is hot enough.
Connecting the sensors:
External sensors GT1 and GT2 must always be connected. GT3 is connected if the heat pump is to produce hot
water. GT5 if use of a room sensor is required.
*Acc. tank:
A 100-300-litre accumulator tank is recommended in systems with separate controls for e.g. floor heatingto
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.
MIXING
VALVE
OIL-FIRED BOILER
*ACK.TANK
DHW
CW
HOT WATER HEATER
P1, RADIATOR PUMP
3-way valve
41
FILTER
BALL
EXP
HEAT PUMP
HEAT TRANSFER
SYSTEM