Technical data

Installation and maintenance instructions ecoTEC exclusive 0020017768_0520
5.10.6 Wiring diagrams
X22
Cable harness compact thermal module
Cable harness hydraulics
Connection for external
eBUS controller
Room thermostat 24 V:
Connection 7, 8 and 9
No bi-directional interface
(only analogue)
Room thermostat 230 V/50 Hz
(Remove bridge when connecting)
Heating pump
Mains connection: 230 V/50 Hz
Igniter
Caution:
Do not connect mains voltage!
Danger of damage to
the electronics!
Diagnosis via eBUS,
vrnetDIALOG
Connection accessories module
External sensor
External flow or return sensor
Connection eBUS accessories
Fan
Fuse 2A, slow-response
2nd pump: - circulation pump
- storage tank charging pump
- 2nd external pump
- solar pump
PWM pump
Fig. 5.15 Connection wiring ecoTEC exclusive
5 Installation