Bosch Compress 7000i AW Installation Manual

InstallationCompress 7000i AW – 6721830633 (2021/02)12Table 6 Pipe dimensions and maximum pipe lengths (single section) for connecting the heat pump to the AWE indoor unit with integrated electricbooster heater5.5.2 Water connecting pipeNOTICEDamage due to risk of frost!If the condensate freezes and cannot be routed away from the heatpump, the evaporator may be damaged.▶ Always install pipe trace heating if ice is likely to form in thecondensate hose.Remove condensate via a frost-free drain of the heat pump, possiblyequipped with pipe trace heating. The drain must slope sufficiently toprevent water from accumulating in the pipe.The condensate can be routed to either a gravel bed, a stone box or intoa rainwater gully.▶ Route 32 mm plastic pipe from the condensate connection to a drain.▶ Connection of pipe trace heating  Chapter 7.1.Fig. 16 Condensate tube connections, valid for all sizes[1] Condensate line in rainwater gully[2] Condensate line in gravel bed/stone box[3] Connection for condensate tube5.5.3 Connection of heat pump to the indoor unitNOTICEMaterial damage due to excessively high starting torque!If connections are tightened too tightly, the heat exchanger may bedamaged.▶ When installing the connection, the tightening torque should be nomore than 150 Nm.Short pipe runs outdoors reduce heat losses. Use of pre-insulated pipesis recommended.▶ Use pipes in accordance with Chapter 5.5.1.▶ Connect flow to the indoor unit at the heat transfer medium outlet ofthe heat pump ( [1], Fig. 17).▶ Connect return from the indoor unit at the heat transfer medium inletof the heat pump ( [2], Fig. 17).▶ Tighten connections of the heat transfer medium pipes with astarting torque of 120 Nm. Direct the force downwards ( Fig. 17)to avoid lateral loading of the condenser.If the connection does not seal properly, the joint can be tightenedwith a starting torque of up to 150 Nm. If the connection is still nottight, this indicates that the gasket or connected pipe is damaged.Heat pump Delta heattransfer medium(K)Nominal flowrate (l/s)Maximumpressurereduction (kPa)1)1) For pipes and components between the heat pump and indoor unit.AX20 inside Ø15 (mm)AX25 inside Ø18 (mm)AX32 inside Ø26 (mm)AX40 inside Ø33 (mm)Maximum pipe length [A, 15] PEX (m)2)2) The installation of a 3-way valve in the DHW circuit of the system was factored into the calculation of the pipe lengths.5 OR-S 5 0.32 55 9 23 307 OR-S 5 0.34 57 8,5 21.5 309 OR-S 5 0.43 44 10.5 3013 OR-S/T 5 0.63 34 24 3017 OR-T 5 0.82 10 11 3)3) This pipe length applies if a diverter valve is not installed in the DHW circuit of the system.303)321