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8
Close all of the heating circuits that may also be closed during
operation (depending on the type of heat pump usage) so that
the least favourable operating state - with respect to the water
flow rate - is achieved. Typically these are the heating circuits of
the rooms on the building's south and west sides. At least one
heating circuit must remain open (e.g. bathroom).
The overflow valve is to be opened to such an extent that based
on the current heat source temperature the maximum tempera-
ture spread between heating supply and return flow temperature
is obtained, as indicated in the table that follows. The tempera-
ture spread should be measured as closely to the heat pump as
possible. In mono-energetic systems, the electric heating ele-
ment is to be deactivated.
Heat source
temperature
from
to
-20° C
-15° C
-14° C
-10° C
-9° C
-5° C
-4° C
0° C
1° C
5° C
6° C
10° C
11° C
15° C
16° C
20° C
21° C
25° C
26° C
30° C
31° C
35° C
The following procedure must be observed so that the commis-
sioning activities can be carried out without any problems:
1)
Close all heating circuits.
2)
Open the overflow valve all the way.
3)
Wait until the buffer tank has reached a temperature of ap-
prox. 25 °C.
4)
Subsequently, slowly reopen the valves of the heating cir-
cuits, one after the other, in such a way that the heating
water flow rate is continually increased by slightly opening
the related heating circuit. When so doing, the heating water
temperature in the buffer tank must not fall below 20 °C so
that the heat pump can be defrosted at any time.
5)
Once all heating circuit are fully open and a heating water
temperature of approx. 20 °C is maintained in the buffer
tank, the minimum flow rate must be set on the overflow
valve and the heating circulating pump.
8
Functional Description
8.1 Heat Pump Remote Control
Unit
The heat pump can be switched on and off by means of the re-
mote control positioned inside the building. Switching off in this
case means switching to a "standby" function, i.e. as long as the
heat pump is supplied with mains power, the frost protection
function of the heat pump remains active. If the water tempera-
ture is too low, first the heating circulating pump, and if this is not
enough, also the compressor must be put in operation. The re-
mote control allows you to set the heating or cooling operating
mode (the switchover delay from the heating to the cooling
E-6
max. difference between
heating water supply and
return temperature
4 K
4 K
4 K
5 K
5 K
5 K
6 K
7 K
8 K
9 K
10 K
mode, or vice-versa, is 10 min.) as well as the temperature level
of the heating water.
1)
Switch On/Standby
2)
LED (green) is illuminated regardless of the switch position
(indicates operational readiness of heat pump)
3)
Switch "Heating" (left side depressed)
Switch "Cooling" (right side depressed)
4)
Dial for selecting heating water setpoint temperature
8.2 Control Board
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