Daikin Altherma EHYKOMB33AA - To Connect the Main Power Supply of the Gas Boiler; To Connect the Communication Cable between Gas Boiler and Indoor Unit

9 | Electrical installation
Installer reference guide
120
EVLQ05+08CA + EHYHBH05A + EHYHBH/X08A + EHYKOMB33AA
Daikin Altherma hybrid heat pump
4P355634-1G – 2022.09
INFORMATION
The preferential kWh rate power supply contact is connected to the same terminals
(X5M/3+4) as the safety thermostat. It is only possible for the system to have EITHER
preferential kWh rate power supply OR a safety thermostat.
9.3.3 To connect the main power supply of the gas boiler
1 Connect the power supply cable of the gas boiler to a fuse (a) (L: X2-2 (BRN),
N: X2-4 (BLU)).
2 Connect the earthing of the gas boiler to an earthing terminal.
Result: The gas boiler performs a test. appears on the service display. After the
test, appears on the service display (wait mode). The pressure in bar is shown on
the main display.
a
X2
DANGER: RISK OF ELECTROCUTION
A fused spur or an unswitched socket MUST be located no more than 1m from the
appliance.
CAUTION
For installation in damp rooms, a fixed connection is obligatory. When working on
the electrical circuit ALWAYS isolate the electric supply.
9.3.4 To connect the communication cable between gas boiler and indoor unit
1 Open the gas boiler.
2 Open the switch box cover of the gas boiler.
3 Remove one of the bigger knockout holes on the right side of the switch box
of the gas boiler.