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Heating circuit 1 → 4/13 → 740 (min), 741 (max)
Heating circuit 2 → 4/13 → 1040 / 1041
Heating circuit 3 → 4/13 → 1340 / 1341
Heating system, output water minimum temperature:
Adjustment range: 8-45°C
Factory setting: 12°C
Heating system, output water maximum temperature
Adjustment range: 12-95°C
Factory setting: 45°C
Separate minimum and maximum set points must be determined
for each heating circuit.
NOTE! When using a pump mixing circuit (not mixing valve),
the maximum set point is to be set in menu Parameter list →
Heating pump → 11/23 → 2855 "Maximum switch-of-temper-
ature heating". As flow sensor B21 measurement reaches the
value set on 2855, the compressor comes to a halt.
NOTE! The minimum set point for the output water can be in-
creased if the building's underfloor heating is intended to be on
in summertime. For this feature, you must take the "Sum-
mer/winter heating limit" into account.
12.6 Domestic hot water
The site-specific definition of domestic hot water is done in Ex-
pert level.
The heat pump charges domestic hot water according to the fixed
temperature limit.
You can affect the domestic hot water operation with the follow-
ing settings.
DOMESTIC HOT WATER SET POINTS
Domestic hot water is adjusted according to various set points.
These set points are activated according to the selected mode of
operation, and result in the desired temperature in the domestic
hot water reservoir.
Factory settings:
Nominal set point 55°C
Reduced set point 45°C
DOMESTIC HOT WATER RELEASE
The release amount determines when the domestic hot water
charging takes place.
34
Menu: Expert → Parameter list
Domestic hot water → 2/6 → 1620
Factory setting: 24h/day
24h/day
The domestic hot water temperature is adjusted independently of
time programs, all the time, according to the domestic hot water
temperature's nominal set point.
Time program 4 / domestic hot water
The controller's time program 4 is complied with in the heating
of domestic hot water. In this case, switch connections are made
during the set operation times between the nominal set point and
the reduced set point.
DOMESTIC HOT WATER'S LEGIONELLA
FUNCTION
The controller has an elaborately adjustable legionella function,
which prevents the growth of legionella in the reservoir. The
function can be programmed on in the domestic hot water menu.
All the legionella definitions are made in Expert level.
Menu: Expert → Parameter list
Domestic hot water → 2/6 → 1640 (On / Stop)
Factory setting: Off
Legionella function set point (1645)
Factory setting: 55°C
Legionella function circulation pump (1647)
If a DHW circulation pump is connected it can be activated dur-
ing the period of time the legionella function is performed.
Factory setting: OFF
SWITCHING DIFFERENTIAL OF DOMESTIC
HOT WATER CHARGING
Domestic hot water is produced to the reservoir with the heat
pump with the change-over valve. When charging the domestic
hot water, the size of the reservoir and the power of the heat
pump is significant when the compressor is activated. The com-
pressor should run as long period as possible to ensure long ser-
vice life. With the switching differential of activation, you can
affect the running times of the compressor during domestic hot
water charging. Note that by increasing the set point, the amount
of domestic hot water to be consumed is reduced. This affects
the sufficiency of domestic hot water in connection with con-
sumption.
Menu: Expert → Parameter list
Domestic hot water reservoir → 3/11 → 5024
Factory setting: 5°C
Gebwell GEMINI
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