8.2 Sub-menu HEAT CURVE
Table 10. Used to change settings for the heat curve.
Menu selection Meaning Factory setting
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.
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.
10°C
(range: 10°C / 50°C)
MAX Maximum calculated setpoint value of the supply temperature. 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.
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.
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.
0°C
(range: -5°C / 5°C)
HEAT STOP Maximum outdoor temperature when heat production is permitted.
If HEAT STOP applies, the outdoor temperature must drop 3°C below
the setting before HEAT STOP stops.
17°C
(range: 0°C / 40°C)
REDUCTION Only appears if the tariff control function has been activated. Lower-
ing set room temperature. Active at 10 kΩ connection at EVU input.
2°C
(range: 1°C / 10°C)
TANK TEMP Displayed if buffer tank is active. Charges the buffer tank to the set
temperature. AUTO setting charges the tank to the supply line set-
point value.
AUTO
(range: 30°C / 55°C)
OVERCHARGE Displayed if the buffer tank is active and TANK TEMP is set to AUTO.
Charges the buffer tank to supply line setpoint value + the value of
OVERCHARGE.
0°C
(range: 0°C / 5°C)
ROOM FACTOR Only displayed if an accessory Room temperature sensor is installed.
Determines how great an impact the room temperature is to have
when calculating the supply temperature. For under floor heating it
is recommended that ROOM FACTOR is set to 1, 2 or 3. For radiator
heating it is recommended that ROOM FACTOR is set to 2, 3 or 4.
2
(range: 0 / 4)
(0 = no impact,
4 = very large impact)
POOL Only appears if POOL is selected. The temperature in the pool is con-
trolled by a separate sensor regardless of the heating and hot water
system.
20°C
(range: 5°C /40°C)
POOL HYSTERESIS Only appears if POOL is selected. The difference between the desired
charge value (adjustable) and actual value to the pool sensor. Pool
hysteresis does not affect the integral value.
2°C
(range: 1°C / 10°C)
8.3 Sub-menu HEAT CURVE 2
Only appears if shunt group sensor is connected and activated in menu SERVICE -> INSTALLATION -> SYSTEM ->
SHUNT GROUP.
Table 11. Used to change settings for heat curve 2.
Menu selection Meaning Factory setting
CURVE 2 Calculated shunt group temperature at 0°C outdoor temperature. Shown as a
graphic curve. The curve will be limited by the set values of MIN and MAX.
40°C
(range: 22°C / 56°C)
MIN Minimum permitted shunt group temperature, if the temperature for heat stop
has not been reached.
10°C
(range: 10°C / 50°C)
MAX Maximum permitted shunt group temperature. 55°C
(range: 15°C / 70°C)
48 – Installation instructions VMBMA1002
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