Connect The Optima Heat Pump - Operating Mode B - IVT Optima 1000 Assembly, Commissioning And Maintenance Manual

Connect the Optima heat pump - operating mode B

Application:
The principle for operating mode B is based on a fi xed temperature and additional heat from an electric/oil-fi red boiler
using a mixing valve. The built-in control unit Rego 603 controls the heat pump using the outdoor sensor T2 (GT2) and
the return sensor T1 (GT1) according to the outdoor compensated control curve. When the heat pump is unable to meet
the heating requirements, the electric/oil-fi red boiler starts automatically and together with the heat pump provides the
required temperature. Hot water is prioritised and controlled by a sensor T3 (GT3) in the hot water heater. While the heat
pump is heating the water in the hot water heater, the heating system is disconnected temporarily through the three-way
valve. If the oil-fi red boiler is in operation it provides the required temperature to the radiator system. Radiator operation
from the heat pump continues when the hot water heater is hot enough.
Hot water mode when the heat pump is not operating:
The heat pump stops automatically at outdoor temperatures below approximately -10ºC and cannot then produce hot water.
The electric element (accessory) in the hot water heater is then automatically activated by Rego 603 and the hot water
heater will thus maintain a high temperature. The temperature is adjustable using the thermostat on the electric element.
Connected sensors:
T1 (GT1) return sensor heating system.
T2 (GT2) outdoor sensor.
T3 (GT3) production of hot water (accessory).
T5 (GT5) infl uence of the room sensor (accessory).
T8 (GT8) fl ow temperature from heat pump.
T9 (GT9) return temperature into the heat pump.
Optima with oil-fi red boiler and hot water heater
Connecting the heat pump to the heating system
45
Q Shut off valve
Q Safety valve outlet
Q Control valve with motor, arrows denote
controlled ports
T Temperature sensor
C Electric cassette
E Double-shelled hot water heater
E Oil-fi red boiler
E Heat pump
C Expansion tank
V Filter/Screen
G Pump
G Fan
V Filter valve
V Duration hot water
W Inlet/outlet
Pipe (Arrow denotes direction of fl ow)
Crossing pipes
T-piece