To Connect The Main Power Supply Of The Gas Boiler; To Connect The Communication Cable Between Gas Boiler And Indoor Unit - Daikin Altherma EHYHBH05A Series Installer's Reference Manual

9 | Electrical installation

9.3.3 To connect the main power supply of the gas boiler

9.3.4 To connect the communication cable between gas boiler and indoor unit

Installer reference guide
120
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.
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
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.
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.
X2
EVLQ05+08CA + EHYHBH05A + EHYHBH/X08A + EHYKOMB33AA
Daikin Altherma hybrid heat pump
4P355634-1G – 2022.09