14
The most common set values:
Set value
Setting range Comment
Room temperature
21.5°C 5–45°C
Room temperature set value set by the user. During the night reduction, the
regulator uses the calculated room temperature value.
Effect of night reduc-
tion
0°C
0–35°C
The amount of night reduction for output water activated using a timer, an exter-
nal home/away switch or GSM control.
Minimum limit
15°C
5–95°C
The lowest permitted temperature for output water. Setting the minimum level
of floor heating for tiled floors to 20–25°C ensures comfortable heating and the
evaporation of moisture in the summer.
Maximum limit
45°C
15–125°C
The highest permitted temperature for output water. The maximum limit can be
used to prevent temperatures that are too high (for example, caused by an error
when setting the control characteristic) as well as possibly damage to the piping
and surface materials. For floor heating, set at 35–40°C.
Room compensation
ratio
1.5°C 0–7.0°C
If the room temperature diverges from the set value, the room compensation function
adjusts the temperature of the output water. For example, when the compensation
setting is at 4, the function reduces the temperature of the output water by 6°C after an
increase of 1.5°C in room temperature (4 x 1.5°C = 6°C).
Autumn drying
1°C
0–15°C
The autumn drying function automatically increases the temperature of output
water in the autumn for 20 days. The function is switched on when the average
daily temperature has been over 7°C for at least 20 consecutive days and then
drops below 7°C. The function is on for the following 20 days when the average
daily temperature is below 7°C. The set value for the function shows how much the
function increases the temperature of the output water. The factory setting is 1°C.
Closing the valve for
the summer
20°C
5–50°C
The outdoor temperature limit at which the regulator closes the valve for regu-
lating circuit L1. Regulating circuit L2 is often used for heating humid spaces.
Humid spaces also need to dry in the summer, so the valve in regulating circuit
L2 is not closed.
Minimum limit for the
temperature for the
upper part of the water
tank
55°C
5–75°C
If the temperature for the upper water tank (measurement 9) falls below the set
value, the measurement allows the compressor to start. The compressor will start
provided the temperature in the lower tank (measurement 10) does not prevent
it doing so.
Minimum limit for the
temperature for the lower
part of the water tank
45°C
20–50°C
The regulator starts the compressor if the temperatures of the upper water tank
(measurement 9) and the lower water tank (measurement 10) fall below the
minimum limit.
Water for use
55°C
5–80°C
Set value for water for use. (Recommendation > +55°C)
The operating efficiency of the device may vary due to the geographical location. The annual operating efficiency
reaches its optimal point when the water tank temperature is maintained at the correct level. The factory setting for
the minimum set value for the lower part of the water tank is +45°C (30–50). The factory setting for the minimum set
value for the upper part of the water tank is +55°C (5–55). As a rule, the set values of the water tank are kept as low
as possible to allow for the best annual operating efficiency possible.
During the winter, when the need for heating is great, the set value for the lower part of the water tank should be
determined in relation to the temperature of the output water. The temperature of the upper part of the water tank
increases after a long period of use and the threshold value for the compressor to run is 95°C.
This is due to the super-heating properties of the water tank structure. This is why a mixing valve for hot water must
be used in order to prevent any risk of burns from the scalding hot water. The compressor is controlled, as a rule,
according to the minimum setting of the lower part of the water tank.
During the summer, when there is no need for heating (with the exception of humid rooms), the compressor is seldom
on and there is not enough super-heating to produce hot water for use. In this case, the minimum temperature of the
upper part of the water tank can be maintained at +55°C and the compressor will be controlled according to the
minimum temperature of the upper part of the water tank.
