Vaillant geoTHERM SERIES Installation And Servicing

Also see for geoTHERM SERIES: System Installation Instructions Instructions for use Installation instructions Operating instructions

Installer_manual_OEM_Vaillant_PROTO_3_GB - 06/11 - Vaillant- 36 -14 Commissioningi At the time of commissioning, complete all relevantsections of the Benchmark Checklist located on theinside back pages of this document.• Check that the differential breaker is installed.• Check that the hydraulic and electrical connections are correct.• Check that the filter on the heat pump return is installed.• Check the airtightness of the connections.• Open all the hydraulic circuits’ valves.14.1 filling the glycol circuitb Warning! Do not dispose of glycol into drains and theenvironment.b We recommend that you use propylene glycolenriched with corrosive inhibitors.• Mix 1 part propylene glycol with 2 parts water (maximum). This30% mixture ensures antifreeze protection down to an exteriortemperature of -15 °C.• Use an antifreeze test kit to ensure accurate dosing.• Make sure that the hydraulic circuit is purged.• In order to drain the glycol circuit after filling, use a fill pump.• Put the heat pump circuit under pressure between 1.5 and 2 bars.i The level of glycol may decrease during the first monthfollowing the commissioning of the installation. It mayalso vary in accordance with the outdoor temperature.Any residue of glycol solution should be kept in an appropriatecontainer to be re-used for the next filling.• Ensure any leftover glycol solution is left with the end user andretained in a safe place.14.2 Activating the heat pumpe Make sure that all the electrical connections havebeen made.b Make sure that the setting for the maximum temperatureat heating flow is compatible with the installation.• Position the circuit breaker located on the electrical circuit boxand connected to the heat pump to the ON position.The main screen for the command unit is displayed.• See the chapter "Example installation" to enter all the settingscorresponding to your installation.14.3 Activating the options• See the instructions for each option to activate them and entertheir settings.14.4 Heating system test• Ensure that there is a heating demand to the control unit. Inthe case of a multi-zone configuration, perform the test zoneby zone and ensure that the appropriate zone gets warmer.• Ensure that all the heating circuit’s thermostatic valves areopen.• Balance the heat emitters, if necessary.15 Specific adjustment15.1 Adjusting the heating circuitb The maximum heating output temperature must beadjusted in accordance with the characteristics ofyour installation.b Ensure that the heating curve setting is compatiblewith the installation.b Make sure that the functioning mode for the boiler'scirculator is not in permanent mode, but synchronisedwith heating demand (with the room thermostat).2431Key1 Speed I2 Speed II3 Speed III4 Speed selector• Turn the circulator's speed selector to choose speed I.• Open all the thermostatic valves on the radiators to themaximum.• Adjust the temperature to the maximum on all the roomthermostats in your home.• Put your installation into service by forcing a heating requestwhen the circulator should start.• Wait 10 to 15 min and measure the diff erence in temperaturebetween fl ow and return of the heat pump (temperatures canbe displayed using parameters 137 (return) and 138 (fl ow)).The diff erence should be between 5 and 6°C.• If the difference exceeds the indicated values, select a higherspeed.INSTALLATION