Maintenance
27
Compress Hybrid 7000i AW – 6721833053 (2020/09)
8.5.2 Menu: Auxiliary heater with mixer
Make the mixed auxiliary heater specific settings in this menu. These
settings are only available if the system is designed and configured
accordingly and the type of appliance used supports this setting.
Table 8 Settings in the auxiliary heater data menu
8.6 Cooling mode
NOTICE
Damage to the indoor unit due to condensation
The indoor unit with mixer is not designed to be used in cooling mode
below the dew point.
▶ Only use the indoor unit in cooling mode above the dew point.
▶ Set the minimum set flow temperature to at least 17 °C.
▶ Make the necessary settings for cooling mode in the service menu
( instructions for control unit, Heating circuit settings section).
8.7 Adjusting the room temperature-dependent
controller
▶ Install the room temperature-dependent controller according to the
instructions (separate Installation and Operating Instructions).
▶ Set the room temperature-dependent controller as remote control Fb
(separate Installation and Operating Instructions).
▶ Set the room temperature-dependent controller as control unit for
heating circuit 1 (
separate Installation and Operating Instructions).
▶ Make the room temperature settings (separate Installation and
Operating Instructions).
9 Maintenance
WARNING
Risk to life from electric shock!
Touching live electrical parts can cause an electric shock.
▶ Before working on electrical parts, disconnect all phases of the
power supply (fuse/circuit breaker) and lock the isolator switch to
prevent unintentional reconnection.
NOTICE
Deformation due to heat!
If the temperature is too high, the insulation (EEP) in the indoor unit
deforms.
▶ When carrying out welding work in the heat pump, protect the
insulation with a heat resistant cloth or damp cloth.
▶ Only use genuine spare parts!
▶ Refer to the spare parts list when ordering spare parts.
▶ Replace removed gaskets and O-rings with new ones.
The tasks described below must be carried out during an inspection.
Display activated alarm
▶ Check the alarm log (instructions for the control device).
General work
▶ Check that the heating system is generally in proper working order.
▶ Perform a visual inspection and function check of the heating system.
▶ Check all pipes for signs of corrosion and leaks.
▶ Replace any corroded pipework.
▶ Check the system for unusual noises.
▶ During the annual inspection, check the correct function of all
regulating, control and safety equipment and, where applicable,
for correct settings.
Function test
▶ Carry out function check ( Chap. 7.3).
9.1 Draining the heating system
The heating system must be drained when replacing hydraulic
components (e.g. DHW circulation pump) (Chapter 2.3).
▶ Interrupt the power supply to the outdoor unit, indoor unit and
external booster heater.
▶ Close all valves in the heating system.
▶ Close all automatic air vent valves in the heating system.
▶ Interrupt the flow at the particulate filter, close ball valve if necessary.
▶ Connect a hose to the drain valve of the heating system and route the
other end to a drain.
▶ Open the drain valve.
▶ Wait until no more water flows into the drain.
When water no longer flows, the indoor unit is empty.
9.2 Replacing components
▶ De-energise the indoor unit and outdoor unit.
▶ Drain the heating system (Chapter 9.1).
▶ When replacing temperature sensors, make sure they are connected
correctly during installation (Fig. 44 and 45).
▶ Replace component (instructions for component).
▶ Fill and vent heating system (Chapter 7.1).
▶ Restore the power supply to the indoor and outdoor unit.
Menu item Control range: Function description
Delay time for
mixer
0...120 min: Set the delay for opening of the mixing valve
to allow the auxiliary heater to preheat.
Mixer runtime 1...120...6000 s: Set the runtime for the mixing vale to go
from one end point to the other.
Alarm input logic Open contact | Closed contact: Set if the auxiliary heater
has a “NO” or “NC” output for the alarm.
Outs. temp par.
mode
1)
1) Not available if Germany is set as country.
-20...20 °C: The auxiliary heater is allowed to start in
parallel operation below the set outdoor temperature.
Bival. pt. parallel
mode
2)
2) Only available if Germany is set as country.
Outs. temp switch
mode
-20...20 °C: The auxiliary heater is allowed to start and the
heat pump is blocked below the set outdoor temperature
(Alternating operation).
Bival. pt. switch
mode
2)
Add. heater DHW
cylinder
Yes | No: Choose if the DHW cylinder has an electric
additional heater installed.
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