Thermia iTec Commissioning

Parameter Meaning
MIN H.W CHARGE Lowest desired supply temperature during water heating.
Factory setting: 45°C, range: 30°C – 65°C
FIND MIN FLOWS This function is only valid for heat pumps with the Optimum function.
N
The parameter is only active if the operation mode is
set to .
Function to automatically find a correct start flow at compressor start up and defrosting. Minimizes the risk of
incorrect start flow settings.
To consider when selecting prioritized defrosting source. The parameter ENERGY PR.H.W must be set to ON to
be able to test the flow of the hot water tank.
To be able to test the cooling circuit, cooling must be set to ON.
Factory setting: , range: - ON
The flows found with this function will override any previous factory settings for MIN FLOW HEAT, MIN FLOW
H.W and MIN FLOW COOL.
8.10
BUFFER TANK
Parameter Meaning
CONFIGURATION With DEMAND CONTROL, heating is produced according to the house's heating demand.
With tank control, a fixed value is stated for the buffer tank.
Factory setting: DEMAND CONTROL, range: DEMAND CONTROL – TANK CONTROL
RET. L. HP SHUNT When the heat pump is inactive the heat is shunted from the buffer tank to the heat pump at set temperature.
Factory setting: 25°C, range: 20°C – 30°C
SHUNT TIME RET. Indicates shortest permitted time between control signals to the return line shunt.
Factory setting: 30s, range: 10s – 99s
H.C INTEGRAL B. Factory setting: 40, range: 5 – 250
TANK OFFSET HP Indicates the number of degrees from the desired buffer tank temperature when the heat pump must start to
heat the buffer tank.
A condition is that CONFIGURATION = TANK CONTROL.
Factory setting: 4°C, range: 2°C – 20°C
TANK OFFSET AUX. Indicates the number of degrees from the desired buffer tank temperature when the immersion heater must
start to heat the buffer tank.
A condition is that CONFIGURATION = TANK CONTROL.
Factory setting: 7°C, range: 2°C – 20°C
TANK OFFSET EXT Indicates the number of degrees from the desired buffer tank temperature when the external auxiliary heater
must start to heat the buffer tank.
A condition is that CONFIGURATION = TANK CONTROL.
Factory setting: 10°C, range: 2°C – 20°C
SYSTEM CIRCUIT Indicates if the system shunt group must be controlled by a heat curve or by a constant temperature. Condi-
tions are that CONFIGURATION = TANK CONTROL and the external auxiliary heater is not configured.
Factory setting:
HEAT CURVE, range:
HEAT CURVE – CONSTANT TEMP - OPEN CIRCUIT.
At the selection OPEN CIRCUIT, the shunt outputs are not active, but the temperature for system supply is dis-
played in the OP.DATA menu. The menu only appears if external auxiliary heater is not selected.
SHUNT TIME SYS Indicates shortest permitted time between control signals to the system shunt.
Factory setting: 30s, range: 10s – 99s
SYS.PUMP COOL Indicates whether the system's circulation pump must be used for cooling. Not displayed if
external auxiliary heater is selected.
Factory setting: ON, range:
– ON
Commissioning
iTec
Thermia Värmepumpar VIJSR102
39

Thermia iTec Specifications

General

Brand	Thermia
Model	iTec
Category	Heat Pump
Language	English