Start-up 70020257297_02 aroTHERM Installation and maintenance instructions 69NL3L2L112345L1L2L3NX211X210X20012LNLN42312. Install one electrical partition for the product (circuitbreaker), as shown in the illustration.3. Use one 5-pole power supply cable.4. Route the power supply cable from the building andthrough the wall duct to the product.5. Strip the outer sheathing from the electrical wire.(→ Page 67)6. Connect the power supply cable to connection X200 inthe electronics box.7. Use the strain relief clamp to secure the power supplycable in place.6.7.2 3~/400V, dual power supply1. If it is stipulated for the installation site, install two resid-ual-current circuit breakers for the product.NL3L2L1NL12345L1L2L3NX211X210X20012LNLN42312. Install two electrical partitions for the product (circuitbreaker), as shown in the illustration.3. Use a 5-pole power supply cable (from the heat pumpelectricity meter) and a 3-pole power supply cable (fromthe household electricity meter).4. Route the power supply cables from the building andthrough the wall duct to the product.5. Strip the outer sheathing from the electrical wire.(→ Page 67)6. Connect the 5-pole power supply cable to connectionX200 in the electronics box.7. Remove the 2-pole bridge from the X210 connection.8. Connect the 3-pole power supply cable to connectionX211.9. Use the strain relief clamps to secure the power supplycables in place.6.8 Connecting the eBUS lineCondition: Refrigerant pipes with eBUS line▶ Connect the eBUS line to connection X206, BUS.▶ Use the strain relief clamp to secure the eBUS line inplace.Condition: Separate eBUS line▶ Use a 2-pole eBUS line with a conductor cross-sectionof 0.75 mm².▶ Route the eBUS line from the building and through thewall duct to the product.S20S21BUS eBUS+-563412X206▶ Connect the eBUS line to connection X206, BUS.▶ Use the strain relief clamp to secure the eBUS line inplace.6.9 Connecting accessories▶ Observe the wiring diagram in the appendix.6.10 Closing the electronics box1. Secure the cover by lowering it into the stop.2. Use two screws to secure the cover to the lower edge.6.11 Sealing the wall duct▶ Seal the wall duct using a suitable sealing compound.7 Start-up7.1 Checking before switching on▶ Check whether all the hydraulic connections are estab-lished correctly.▶ Check whether all the electrical connections are estab-lished correctly.▶ Check that the electrical partition is installed.▶ If it is stipulated for the installation site, check whether aresidual-current circuit breaker has been installed.▶ Read through the operating instructions.▶ After installation, ensure that at least 30 minutes havepassed before switching on the product.