Vaillant VR 66 Installation Instructions Manual

Contents

- 13 -0020140122_02 - 05/13INSTALLATIONEN24V connectors (low voltage)230V~ CYL.2 1DHWCH1 CH2ON DHW OFF12-+BUS NTC12-+BUS NTC1 2Key1 eBUS connector (2 pins)2 NTC connector (2 pins)4.3.2 Main board20 mm max.21Key1 Electrical wires2 CasingWhen you connect the electrical wires to a connector on the mainelectronic board:∙ Keep a distance of a maximum of 20 mm between connectorand the start of the insulation (2).∙ If single core wires are used (1) ensure that they are wrappedtogether in an insulating sheath.∙ Fix the cables in the cable-clamps on the unit.5 CommissioningThe commissioning should be carried out by a competent personapproved at the time by the Health and Safety Executive and inaccordance with the current issue of BS6798.∙ Completely open all the radiator thermostatic valves in therooms where the room thermostats were been installed.5.1 Filling5.1.1 BoilerCommission the boiler according to the instructions of itsinstallation manual.∙ Refer to the installer manual.5.1.2 Heating circuit∙ Manually open the different heating circuit valves.5.2 Venting5.2.1 BoilerCommission the boiler according to the instructions of itsinstallation manual.∙ Refer to the installer manual.5.2.2 Heating circuit adjustementVenting of the heating circuit enables the purging of any air in theheating circuit (valves still manually opened).∙ Open the different heating circuit air vent.b Caution!• When venting is complete, close the differentheating circuit air vent and valves.5.3 Switching on∙ Turn on all the appliances that make up the installation (seethe installation manual(s). Use the following order:- Control unit- Boiler5.4 Multizone specifi c adjustmentIn case of multizone mode selection (rotary switch in pos 0),the pairing must be made between the room thermostat(s) andcontrol unit in the system heating (one after the other).∙ Follow the install assistant of the room thermostat "zone 1".∙ Consult the installation manual of the room thermostat inorder to carry out the operation.∙ Repeat the operation with the room thermostat "zone 2"5.5 Restart and check∙ Check if all settings have been saved by switching the systemoff and then on to ensure that any adjustments operatecorrectly and check that the appliances operate safely.∙ Check if the system answers correctly to a demand:- issue a heating demand for the heating zone 1- issue a heating demand for the heating zone 2 (If multizonemode is selected)- issue a domestic hot water demand (if DWH tank is connected)