17
Boiler installation sequence 4
Instructions for installation and servicing ecoMAX
17
4.14.3 Electronic board layout
Fig. 4.12: Connection wiring
9
8
7
5
4
3
N
L
N
L
Pump 2. Pump
C
o
nt
act
therm
L N
2
4V I
23
0
V
RT
2
4
V
23
0
V
R
T
2
3
0V
X 4
X 10
X 7
X 8
X 2
13
X 6
1
1
1
1
1
C
oding r
e
sis
tanc
e
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 sup-
ply: 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
External CH pump
(adjustment via diagnostic system, diagnostic
setting d.16)
80020014605_00GB_032006 22.02.2006 21:35 Uhr Seite 17
Summary of Contents for ecoMAX 635
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