23
Boiler installation sequence 4
Instructions for installation and servicing ecoMAX
23
4.16.3 Electronic board layout4.16.3 Electronic board layou
Fig. 4.14: Connection wiring ecoMAX 613/2, 618/2, 622/2, 824/2, 828/2
9
8
7
5
4
3
N
L
N
L
Pump
C
o
nt
act
therm
2
4V I
23
0
V
RT
2
4
V
23
0
V
R
T
2
3
0V
X 4
X 7
X 2
13
1
C
oding r
e
sis
tanc
e
1
1
1
X 6
Diagnostic connection
Diverter valve
Connection for multi–function module
306 253
Room thermostat 24 V: Connections 7, 8 and 9
Caution: DO NOT connect directly to mains
supply: danger of irreparable damage to
electronic system
Room thermostat 230 V/50 Hz
(remove bridge for connection)
Heating pump connection
Mains power supply: 230 V/50 Hz
Under–floor heating overload thermostat, 20 V
(remove bridge for connection)
Edge connector for Vaillant weather
compensator
83 41 77_12 GB04.04.qxd 22.09.2004 12:34 Uhr Seite 23
