Specifications

7
We reserve the right to modify technical specifications without prior notice.
83053100bUK © Alpha-InnoTec GmbH
Cooling function
The cooling function is available only for heat pumps
with the model designator K.
It is not possible to retrot heat pumps for cooling with-
out this designator. For the model designator, please re-
fer to the purchase documents. It is also on the rating
plate attached to the outside of the unit.
The cooling function is based on the principle of pas-
sive cooling. An existing low temperature level is mixed
to a temperature above the dew point and transferred
to the heating medium by means of a heat exchanger.
The heat pump remains switched off during cooling; only
the circulating pumps for the heating circuit and the heat
source are in operation.
The cooling power depends on the heat source tempera-
ture, which varies seasonally. For example, if the ground
stored more heat toward the end of the summer, the
cooling power of a brine/water pump is reduced.
The effectiveness of passive cooling is generally not com-
parable to that of an air conditioning system.
NOTICE.
The use of the passive cooling function requires
oor or wall heating.
the room thermostat for the cooling function
The room thermostat is used to switch the cooling func-
tion on and off:
I Cooling function on
Cooling function off
utilization of the cooling function
The heating and heat pump regulation program activates
the cooling function only if the following conditions are
fullled:
•
Heat pump model must have integrated cooling
function.
•
Room thermostat for the cooling function must
be switched on.
•
Temperature of the heat source must be ≥ +5 °C.
•
Heat pump must not currently be occupied with
“heating” or “water heating”.
If the heat pump regulation program sends the
command “water heating” to the heat pump, the
cooling function of the heat pump automatically
stops as long as the water is heating.
•
The “Automatic” setting must be selected on the
control element under “Operating mode: cool-
ing”.
•
The outdoor temperature release set on the con-
trol element must be exceeded.
Operating manual of the heating and heat pump
regulator.
The cooling function can be used in two variants:
Variant 1:
Manual switching from heating to cooling opera-
tion (and vice versa). This variant operates at a
pre-set forward ow temperature.
Operating manual of the heating and heat pump
regulator.
Variant 2:
Automatic switching from heating to cooling op-
eration (and vice versa). This variant can operate
using a cooling curve.
NOTICE.
Variant 2 is possible only if a Comfort board
(available at extra charge) is built into the heat-
ing and heat pump regulator.
Comfort board operating manual.