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FUNCTION CHECK
▶ Set Hot water production for each heat pump (compressor) (
Chapter 20.2).
▶ Set the heat pump output for each heat pump in Heat pump x
capacity ( Chapter 20.7). See the type plate.
▶ Output limitation electric heater in compressor mode.
Set the permitted output at the same time as the compressor is
operating ( Chapter 20.8).
▶ Output limitation electric heater when additional heat only.
Set the permitted output when the compressor is not operating (
Chapter 20.8).
▶ Set Minimum outdoor temperature ( Chapter 20.1).
▶ Set Circuit 1 Heating\ Type of heating system ( Chapter 20.1).
▶ Set Circuit 2, 3... ( Chapter 20.1)(option).
– Mixing valve mode
– Type of heating system
– Mixing valve running time
▶ Select option in Protective anode installed ( Chapter 20.2).
▶ Set value for Pool (if pool function is installed), see option
documentation.
▶ Set Date ( Chapter 20.10).
▶ Set Time ( Chapter 20.10).
▶ Start-up completed, Yes/No.
The start-up menus will be available until Yes is specified.
Under Protective anode installed make the
appropriate selection to prevent unnecessary alarm
messages.
After the start-up menus, the Initial menu is shown in the display. All
customer functions are accessible from this menu, whereas the installer
menus are accessible only after a change of access level.
Fig. 43 Starting position
17
FUNCTION CHECK
17.1 REFRIGERANT CIRCUIT
The refrigerant circuit may only be worked upon by
qualified and registered refrigerant engineers.
DANGER: Risk of toxic fumes!
The refrigerant circuit contains substances which, when
released or exposed to open fire, can form toxic fumes.
The fumes block the airways even at low concentrations.
▶ If the refrigerant circuit is not air-tight, the room must
be vacated immediately and properly aired.
When the heat pump starts and there are quick changes in temperature,
bubbles may become visible in the sight glass Figure 44.
36
Fig. 44 Sight glass position
In the event of constant formation of bubbles:
▶ Contact a service representative.
17.2 FILLING PRESSURE IN COLLECTOR CIRCUIT
The level in the vessel should not fall below the min-level 1/3. If the fluid
level is too low follow the instructions below:
The heat pump must be running all the time while filling.
▶ Remove the cover on the valve on top of the tank. Now carefully open
the valve.
▶ Check that the valve is fully open.
▶ Fill with correct anti-freeze mixture, mixed to correct protection level
(to 2/3) with the help of a clean watering can or similar.
▶ Close the valve and finish by screwing on the cover.
17.3 SETTING HEATING SYSTEM OPERATING PRESSURE
Pressure gauge reading
0.5 bar
1 bar
1.5 bar
6 720 614 789-01.1I
Table 21
▶ When the gauge is below 0.5 bar (in cold installation): Fill water until
the gauge shows approx 1 bar again.
▶ If there is a pressure drop: check the expansion vessel and heating
system for leaks.
17.4 OPERATING TEMPERATURES
Check the temperatures in the heat carrier and collector circuit after 10
minutes of operation:
• Temperature difference between heating system flow and return
approx. 7 ... 10 K.
• Temperature difference between collector circuit in and out approx. 2
... 5 K, recommendation: 2 ... 3 K.
When the temperature difference is too small:
▶ Reduce the speed of the corresponding circulation pump (G2 or G3)
in order to obtain a lower flow.
When the temperature difference is too great:
▶ Increase the speed of the corresponding circulation pump (G2) in
order to obtain a greater flow.
Minimum system pressure (when cold)
Normal filling pressure
Maximum system pressure at highest heating water
temperature:
must not be exceeded (safety valve opens).
6 720 806 768 (2013/02)
6 720 641 855-09.1I
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