Electrical Installation; Connecting The Electrical Wiring; To Connect The Main Power Supply Of The Gas Boiler; To Connect The Communication Cable Between Gas Boiler And Indoor Unit - Daikin Altherma EHYKOMB33AA Installations- Und Bedienungsanleitung

11 Electrical installation

4 Check all parts for gas leaks on a pressure of maximum
50 mbar (500 mm H O). There may be no stress on the gas
2
supply connection.
11 Electrical installation
CAUTION
See "4 Specific installer safety instructions" [ 4 7] to make
sure this installation complies with all safety regulations.
11.1

Connecting the electrical wiring

DANGER: RISK OF ELECTROCUTION
WARNING
ALWAYS use multicore cable for power supply cables.
11.1.1 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.
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.
Installation and operation manual
28
11.1.2
appears on the service
b
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.
4 Put the (larger) boiler connector through the knockout hole. Fix
the cable in the switch box by routing it behind the pre-mounted
wires.
a
a Solenoid coil
b Connector X5
5 Plug the gas boiler connector into connector X5 of the gas
boiler PCB. Make sure the solenoid coil is outside the gas boiler
switch box.
6 Route the communication cable from the gas boiler to the
indoor unit as in figure below.
Daikin Altherma hybrid heat pump – gas boiler module
EHYKOMB33AA
4P353067-1L – 2022.09