Installer_manual_OEM_Vaillant_PROTO_3_GB - 06/11 - Vaillant- 27 -11 Hydraulic connection• Take care to clean the pipes before assembly removing anydebris or burrs. Grease and oils may need to be removed theyare not possible to remove by cleansing and flushing. Foreignbodies in the system may enter the appliance and interrupt itsoperation.• Do not use any solvent products, due to the risk of damagingthe circuit.• Only use original seals supplied with the appliance.b Make sure that mechanical connections are notovertightened.b Insulate the pipes with an UV- and high-temperature-resistant insulation.1m min.123744568key1 Heat pump flow circuit ¼ turn shut-off valve in the direction of thebuilding (not included) (*)2 Return circuit ¼ turn shut-off valve in the direction of the heat pump(not included) (*)3 Return circuit hose in the direction of the heat pump (not supplied)4 Cap5 Return connection (Ø1 ") to the heat pump6 flow heat pump connection (Ø1 ") to the building7 flow heat pump circuit hose in the direction of the building (notsupplied))8 Insulation (not supplied)(*) To be installed as close as possible to the heat pump• Remove the protection caps (4) located on the connections.• Comply with the values given in the table below when makingthe hydraulic connections of the heat pump circuit.Max linear distance (without elbows oradditional pressure drops) Tubes to be installed≤ 20 m ¾" or Ø internal = 20 mm≤ 30 m 1" or Ø internal = 26 mm• Connect a hose and a shut-off valve to the return connection tothe heat pump.• Connect a hose and a shut-off valve to the flow heat pumpconnection in the direction of the building.• Install the filter on the heat pump return pipe. Install itbetween 2 shut-off valves in order to be able to remove if fromthe circuit and clean it periodically.• Insulate all exposed pipework.12 Discharge of condensateWhen the appliance is operational, it will produce condensationthat needs to be drained off.12600150 15043040036337Key1 Evacuation bend for condensates2 Holes pre-cut in the base of the heat pump• Install the bend (1) delivered with the appliance and connect itto an evacuation pipe with an internal diameter of 16 mm (notsupplied).• Make sure that the condensates evacuation pipe does not freeze.The discharge capacity of the condensate increases if the pre-cutholes (2) present in the base are open. Open the pre-cut holesusing a hammer.i If you choose to open the pre-cut holes (2) present inthe base, take the necessary precautions to recoverthe condensates and stop them freezing.13 Electrical connectione Incorrect installation can cause electric shock orappliance damage. The electrical connection of theappliance must be made only by a qualified engineer.The appliance must be connected directly to an accessible, fixed,switched, electrical outlet.The manufacturer declines any responsibility for damages topersons or others caused by the incorrect installation of theappliance earthing. This includes failure to comply with currentstandards.Electrical components have been tested to meet the equivalentrequirements of BSEN 7671 and the BEAB regulations.The cables connecting the installation's electrical panel and theheat pump must be:- Suitable for a fixed installation.- weather resistant.- equipped with wires adapted to appliance’s power rating.INSTALLATION