Menu selection Meaning Factory setting
HOT WATER Operation with heat pump for hot water production and auxiliary heater during peak
heating charging (anti-legionella function).
When the operation is set to HOT WA-
TER, the circulation pump is not run-
ning. The reversing valve hot water is
drawn towards the heating system.
To minimize the risk that the outdoor
unit freezes at low temperatures (that
is, below 5°C) the reversing valve hot
water is drawn towards the water heat-
er and the circulation pump starts.
When the outdoor temperature rises
again (above 5°C), the circulation
pump stops and the reversing valve
hot water is drawn towards the house
again.
-
MANUAL TEST Only displayed when the value for MANUAL TEST is set to 2 in the SERVICE menu. Out-
puts that control components are activated manually.
-
Warning If any operation mode other than AUTO or AUX. HEATER is to be used
during the winter season, the water in the heating system must be
drained. Otherwise any alarms triggered that will cause the outdoor
unit to stop might lead to freezing damage to the system.
7.3 HEATING
Parameter Meaning
CURVE Calculated supply temperature at 0°C outdoor temperature. Shown as a graphic curve. The curve will be limited
by the set values of MIN and MAX. See topic "Curve" under chapter "Tuning the system" for more information.
Factory setting: 40°C (for under floor heating 30°C), range: 22°C – 56°C
MIN Minimum permitted supply temperature, if the temperature for heat stop has been reached and the heat pump
has stopped.
Factory setting: 20°C, range: 20°C – 50°C
MAX Maximum calculated setpoint value of the supply temperature.
Factory setting: 55°C (for under floor heating 45°C), range: 40°C – 85°C
CURVE +5 Local increase or reduction of CURVE at an outdoor temperature of +5°C. Shown in the graph for CURVE.
Factory setting: 0°C, range: -5°C – 5°C
CURVE 0 Local increase or reduction of CURVE at an outdoor temperature of 0°C. Shown in the graph for CURVE.
Factory setting: 0°C, range: -5°C – 5°C
CURVE -5 Local increase or reduction of CURVE at an outdoor temperature of -5°C. Shown in the graph for CURVE.
Factory setting: 0°C, range: -5°C – 5°C
HEAT STOP Maximum outdoor temperature when heat production is permitted. If HEAT STOP applies, the outdoor temper-
ature must drop 3°C below the setting before HEAT STOP stops.
Factory setting: 17°C, range: 0°C – COOLINGMODE ACTIVE -3°C
DURING COOLING Factory setting: AUTO, range: AUTO, OPEN, CLOSED
CONSTANT TEMP The temperature that the shunt wishes to retrieve from the buffer tank and distribute to the house. Only applies
when the buffer tank is activated and with shunt group connected.
Factory setting: 40°C, range: 10°C – 55°C
Commissioning iTec XT
AWIXT01CG0102 Thermia AB
30
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