Start-Up; Installation Shutdown; Switching Off The Central Heating; Frost Protection - DeDietrich HPI G Hybrid User Manual

5.3

Start-up

5.4

Installation shutdown

5.5

Frost Protection

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1. Switch on the outdoor unit and the indoor module simultaneously.
2. The hybrid heat pump begins its start-up cycle.
If the start-up cycle runs normally, an automatic venting cycle is
initiated. Otherwise, an error message is displayed.
Important
If the heating system is not due to be used for a long period of
time, it is recommended that the boiler be disconnected from the
power supply.
Caution
Some parts of the indoor module remain powered on even when
the boiler's power supply has been cut off. The mains electricity to
the hybrid system must be cut off on the main junction board.
1. Turn the on/off switch to the off position.
2. Cut off the mains electricity to the hybrid system.
3. Shut off the gas supply.
4. Keep the area frost-free.
Warning
In very low temperatures, the installation may freeze if shut down.
It is preferable to keep the installation running at a low
temperature to prevent it from freezing.
5.4.1

Switching off the central heating

See
Boiler manual
If the temperature of the heating water in the heat pump falls too much,
the integrated protection device switches itself on. This device functions as
follows:
If the water temperature is lower than 5°C, the circulating pump starts
up.
If the water temperature is lower than 3°C, the back-up starts up.
If the water temperature is higher than 10°C, the back-up shuts down
and the circulating pump continues to run for a short time.
The radiator valves in rooms where there is a risk of frost must be fully
open.
5 Operation
200 ASL HYBRID 31