Connection Wiring Diagram - Vaillant ECOTEC PLUS VU 80 Installation And Maintenance Instructions Manual

8 Electrical installation
8.6

Connection wiring diagram

Display
connection
8.4 Connection diagram for the ecoTEC plus electronics box
28
Water
pressure sensor
white
Cylinder contact
white
"C1-C2"
red
blue
Safety
Safety
cut-out
cut-out
Remote control circulation pump
External sensor
Flow sensor (optional)
DCF connection
Earth
Earth
Contact thermostat/burner off
Ext. room th. 3-4 (contact, 24 V)
Bus connection
(Controller(room th. digital)
Accessory output
(Select via D.26)
Charging pump
internal pump
Ext. ignition transformer (supply)
Ioni. signal
Unit earth
Mains connection
Unit earth
ecoTEC plus installation and maintenance instructions 0020134823_01
Pump PWM signal
Gas valve
Cylinder sensor (optional)
Flow sensor
Flow sensor
Water Flue gas
DD DD
Fan