Vaillant ecoTEC VU 466/4 Installation And Maintenance Instructions Manual

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Contents

Vaillant ecoTEC VU 466/4 Installation And Maintenance Instructions Manual Manual pdf 21 page image

21Installation and maintenance instructions ecoTEC 0020029172_03connection terminals 7, 8, 9) the bridge betweenterminal 3 and 4 must remain inserted.• Close the rear cover of the electronic box until itaudibly engages.• Lift the electronic box up and press the two clips onthe left and right of the box against the side casing ofthe boiler until they audibly engage.• Mount the front casing (see Chapter 4.8).• To choose pump operating mode 1 (running on ofpump) for multi-circuit controllers, change the settingat diagnosis point "d.18" (pump operating mode) from3 "intermittent" to 1 "run on" (see Chapter 7.2.2).Observe that the bridge at the ProE plug must beremoved when connecting a maximum thermostat(contact thermostat) for underfloor heating.5.8.3 Connecting a low loss header sensorThe low loss header sensor must either be connected tothe X41/RF according to the connection diagram(Fig. 5.15) or to the selected controller (seecorresponding operating manual).5.8.4 Additional relay (grey plug on the PCB) andVR40 - "2 in 7“ multifunctional moduleAdditional relay (grey plug on the PCB)With the ecoTEC it is possible to actuate one additionalcomponent via the additional relay. You can select theinstalled components via diagnosis point "d.26" atdiagnosis level 2 (see Chapter 9.1.2).VR40 - "2 in 7“ multifunctional moduleIf you wish to connect additional components this canbe done using the Vaillant VR40 - "2 in 7"multifunctional module.h Note!Please observe the separate manual attachedto the VR40 - "2 in 7" multifunctional module.Carry out the installation in accordance with thecorresponding operating and installation manual.To actuate relay 1 at the multifunctional module selectdiagnosis point "d.27" at diagnosis level 2, and toactuate relay 2 select diagnosis point "d.28"(see Chapter 9.1.2). You can select the followingcomponents here:1 = circulation pump2 = external pump3 = charging pump4 = vapour extraction hood5 = external solenoid valve6 = external fault message7 = not active8 = remote control eBUS (not active)9 = legionella pump (not active)Installation 5