Vaillant ECOTEC EXCLUSIVE 627 VU 256/5-7 Installation And Maintenance Instructions Manual

Vaillant ECOTEC EXCLUSIVE 627 VU 256/5-7 Installation And Maintenance Instructions Manual Manual pdf 16 page image

6 Operation16 Installation and maintenance instructions ecoTEC exclusive 0020193966_011. Open the electronics box. (→ Page 15)2. Detach the ProE plug from the PCB slot for the mainsconnection (X1).3. Unscrew the ProE plug for the factory-installed powersupply cable, if installed.4. Instead of the factory-installed power supply cable, ifinstalled, use a suitable three-core power supply cablewhich complies with the relevant standards.5. Carry out the wiring. (→ Page 15)6. Close the electronics box.7. Observe the flue-gas connection that is required on aroom-sealed air/flue system. (→ Page 14)5.9.5 Connecting controls to the electronics1. Install the control if necessary.2. Open the electronics box. (→ Page 15)3. Carry out the wiring. (→ Page 15)4. Observe the wiring diagram in the appendix.Conditions: Connecting a weather-compensated control or a room tem-perature control via eBUS▶ Connect the control to the eBUS connection.▶ Bridge the 24 V = RT connection (X100 or X106), if thereis not already a bridge.Conditions: Connecting a low-voltage control (24 V)▶ Remove the bridge and connect the control to the24 V = RT connection (X100 or X106).Conditions: Connecting 230 volt controller▶ Connect the switched live supply with the terminalmarked RT at X1 (beside the LNPE connections) thenremove the link at X100 (do NOT connect 230 volt toany other terminal than the RT connection).Conditions: Connecting a limit thermostat for underfloor heating▶ Remove the bridge and connect the limit thermostat tothe Burner off connection.5. Close the electronics box.6. For multi-circuit controls, change D.018 from Eco (in-termittently operating pump) to Comfort (continuouslyoperating pump). (→ Page 24)5.9.6 Replacing the gas family coding resistor, ifrequired1. Open the electronics box. (→ Page 15)X31X1212. Remove the gas family coding resistor (1) (plug X24)(factory setting: natural gas = yellow) and plug in thecoding resistor from the bag of small parts (liquefiedpetroleum gas = grey).3. Close the electronics box.4. When starting up in the installation assistant or retro-actively via diagnostics code D.087, set the correct gastype.5.9.7 Connecting additional componentsYou can actuate an additional component with the aid of theauxiliary relay that is installed, and you can actuate two othercomponents with the multi-functional module.5.9.7.1 Using the auxiliary relay1. Connect an additional component directly to the integ-rated auxiliary relay using the grey plug on the PCB.2. Carry out the wiring.3. Activate the component via D.026, see section "Adapt-ing to the heating installation".5.9.7.2 Using the VR 40 ("2 in 7" multi-functionalmodule)1. Install the components in accordance with the respect-ive instructions.Conditions: Components connected to relay 1▶ Activate D.027, see section "Adapting to the heatinginstallation".Conditions: Components connected to relay 2▶ Activate D.028, see section "Adapting to the heatinginstallation".6 Operation6.1 Operating conceptThe operating concept and the read-off and setting facilitiesof the operator level are described in the operating instruc-tions.An overview of the reading and setting options for the in-staller level is included in the table in the appendix.Installer level – Overview (→ Page 34)6.2 Calling up the installer level1. Only call up the installer level if you are a competentperson.2. Press and at the same time.3. Navigate to Menu → Installer level and confirm bypressing .4. Set the value 17 (code) and confirm by pressing .