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4.14.3 Electronic board layout
Fig. 4.12: Connection wiring
Instructions for installation and servicing ecoMAX
Boiler installation sequence 4
Diagnostic connection
Diverter valve
Connection for multi–function module
306 253
Edge connector for Vaillant
weather compensator
Under–floor heating overload thermostat, 20 V
(remove bridge for connection)
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
Mains power supply: 230 V/50 Hz
Room thermostat 230 V/50 Hz
(remove bridge for connection)
Heating pump connection
External CH pump
(adjustment via diagnostic system, diagnostic
setting d.16)
17
17
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