6.7 Selection of system solution and connection of external aux. heater6.7.1 IntroductionN Configure the heat pump for the desired system solution in the SERVICE\ADD. HEATER\EXTERNAL ADDITIONmenu.Also see section Piping installation.6.7.2 System solution 1The heat pump is delivered configured for system solution 1.6.7.3 System solution 2N If necessary the external components must be fused using accessory 086U9685 FUSE TO EXTERNAL COMPO-NENT according to the installation instructions supplied with the accessory. The tables below give the compo-nents referred to.For system solution 2, select the following in menu SERVICE\AUX. HEATER\EXT.AUX.HEATER:▪ EXT.AUX.HEATER = ON▪ REV.V. HOT WATER = INTFor DHP-H, DHP-H Opti, DHP-H Opti Pro, DHP-C Opti the electrical connection for system solution 2 must be carried out according to thefollowing table:Component ConnectionInternal immersion heater I/O-card, output for 6 kW (normal connection)External auxiliary heater I/O-card, output for 3 kW, connected and fused with 086U9685Additional shunt Terminal block, 215/216Internal exchange valve I/O-card, 214 (normal connection)For DHP-L, DHP-L Opti, DHP-L Opti Pro the electrical connection for system solution 2 must be carried out according to the followingtable:Component ConnectionInternal immersion heater I/O-card, output for 6 kW (normal connection)External auxiliary heater Terminal block 210, connected and fused with 086U9685Additional shunt Terminal block, 215/216Internal exchange valve I/O-card, 214 (normal connection)For DHP-A, DHP-A Opti, the electrical connection for system solution 2 must be carried out according to the following table:Component ConnectionInternal immersion heater I/O-card, output for 3 kW and 6 kW as well as Defrost card, output for 6 kW (normal connections)External auxiliary heater Defrost card; 283, connected and fused with 086U9685Additional shunt Terminal block, 215/216Internal exchange valve I/O-card, 214 (normal connection)Installation Guide Domestic heat pumpsVMGFQ102 Danfoss Heating Solutions36