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Installation and Servicing ecoTEC plus
23
Fig. 4.9 Connection wiring
X20
X2
-
+
BUS
24V
230V
7
8
9
L
N
3
4
5
X40
X41
X31
Caution:
Do not connect
supply voltage!
Risk of damage
to electronics!
Room thermostat 24V:
Connection 7, 8 and 9
No bi-directional
interface (analogue only)
Mains supply: 230V / 50Hz
Room thermostat 230V / 50Hz
(remove bridge on connection)
Heating pump
2A fuse, slow
Igniter
Connection: 230V
Supply for accessory module
eBUS accessory connection
Burner cable harness
Accessory module connection
Diagnosis via eBUS
vrnet DIALOG
outer probe
ext. flow or return probe
Hydraulic cable harness
Connection for external
eBUS controller
ext. flow or return probe
X12
4.4.3 Electrical board layout
Boiler installation sequence 4
Summary of Contents for ecoTEC plus SERIES
Page 47: ...Installation and Servicing ecoTEC plus 47 Appendix 14...
Page 48: ...Installation and Servicing ecoTEC plus 48...
Page 49: ...Installation and Servicing ecoTEC plus 49...
Page 50: ...Installation and Servicing ecoTEC plus 50 Notes...
Page 51: ...Installation and Servicing ecoTEC plus 51 Notes...
Page 52: ...0020020828_02 GB 08 2006 Subject to alteration...