▶ Before touching live parts: Wait at least 5 minutes to discharge the For operation follow the instructions of the user capacitors. manual. ▶ Observe the wiring diagrams of other system components as well. Table 2 Compress Hybrid 3400i AW – 6721861825 (2023/08)
Operate the appliance only with mounted and closed casing. 0010029907-004 Fig. 1 Components and pipe connections of the indoor unit Automatic air vent Installer module Relay box Mixing valve DHW circulation pump (heat transfer medium) Compress Hybrid 3400i AW – 6721861825 (2023/08)
Bottom view of the indoor unit Return to outdoor unit Flow from the outdoor unit Return to external booster heater Flow to heating system Return from the heating system Flow from external booster heater Front of appliance Compress Hybrid 3400i AW – 6721861825 (2023/08)
[A] It is recommended to ensure a minimum volume of 1 m³ underneath the indoor unit. If this is not possible, ensure that the room is not air-tight by allowing an air vent passage at a height lower than the bottom of the indoor unit. Compress Hybrid 3400i AW – 6721861825 (2023/08)
If this performance degradation can be accepted, the limits in figure 1 are required to ensure the operation of the heat pump throughout its entire service life. Compress Hybrid 3400i AW – 6721861825 (2023/08)
Table 7 Minimum volume and flow for outdoor unit CS3400iAW 6-8 OR- ▶ Install insulated piping between the outdoor unit and indoor unit, keeping the length of the piping as short as possible. Compress Hybrid 3400i AW – 6721861825 (2023/08)
Table 8 Pipe diameter and bypass lengths Maximum sensor In some countries a high limit safety cut-out is required in underfloor heating circuits. ▶ Observe country-specific regulations. ▶ Establish connection as described in chapter 6. Compress Hybrid 3400i AW – 6721861825 (2023/08)
▶ Take out enclosed accessories. To detach the cover [2] from the bottom fixing [1]: ▶ Check that all package contents are present. ▶ Pull the cover [2] on the underside slightly forwards. Compress Hybrid 3400i AW – 6721861825 (2023/08)
(Chapter 2.6). 0010031291-002 ▶ Hang the indoor unit centrally onto the mounting rail (Fig. 16). Fig. 14 Detach the cover from the top fixing Fixing on the top side Cover of the indoor unit Compress Hybrid 3400i AW – 6721861825 (2023/08)
▶ Pull the sides of the cover [1] slightly apart at the back (paying attention to the top cover) and push the cover backwards. 0010031297-002 Fig. 18 Attach the cover to the top fixing Fixing on the top side Cover of the indoor unit Compress Hybrid 3400i AW – 6721861825 (2023/08)
▶ Do not leave pipe parts and connections directly on the ground. ▶ When deburring, make sure that no residue remains in the pipe. ▶ Before connecting the heat pump and indoor unit, rinse the pipe system to remove any foreign bodies. Compress Hybrid 3400i AW – 6721861825 (2023/08)
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▶ Do not solder the piping to the indoor unit. ▶ Use clamp couplings to connect the pipes to the outdoor unit if available. 0010029920-002 Fig. 21 Connecting the indoor unit to the outdoor unit (schematic representation) Refrigerant outlet Refrigerant inlet Compress Hybrid 3400i AW – 6721861825 (2023/08)
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Installation Pump curves [kPa] Q [m Q [l/s] Q [m 0010039375-001 Fig. 22 Pump curves p Pressure [kPa] H Head [m] Q Volumetric flow rate [m P1 Electrical power input [W] Compress Hybrid 3400i AW – 6721861825 (2023/08)
Fig. 23 Connection of the indoor unit to the heating system and the booster heater (example representation with bypass and additional heating pump) Particle filter Flow to heating system Return from the heating system Flow to the auxiliary heater Return to the auxiliary heater DHW connection (combi boiler) Compress Hybrid 3400i AW – 6721861825 (2023/08)
(accessory) is absolutely essential. ▶ Install the dew point monitor on the flow pipe for the heating system (Figure 25). ▶ Electrical connection (Chapter 6.8.5). 6 720 809 156-23.1I Fig. 24 Positioning the outside temperature sensor Compress Hybrid 3400i AW – 6721861825 (2023/08)
( observe instructions for the room thermostat). ▶ Electrical connection (Chapter 6.8.4). 0010031976-001 Fig. 26 Example showing swimming pool installation Swimming pool module Swimming pool [VC1] Swimming pool mixer [HS] Heating system Compress Hybrid 3400i AW – 6721861825 (2023/08)
▶ Before working on electrical parts, disconnect all phases of the power supply (fuse/circuit breaker) and lock the isolator switch to prevent unintentional reconnection. A WLAN router, internet connection and the Bosch HomeCom Easy app are required to use this product. WARNING...
▶ Make sure the potentiometer setting is correct for hybrid application (P=3 and A=0) as shown in Fig. 30, [1]. If necessary, turn the direction arrow to the corresponding position with a screwdriver. Compress Hybrid 3400i AW – 6721861825 (2023/08)
Alternatively, twisted pair cables approved for outdoor use with a minimum cross-section of 0.75 mm can be used. In doing so, only earth the shielding on one side (indoor unit) and to the casing. Compress Hybrid 3400i AW – 6721861825 (2023/08)
35. ▶ Use wire ferrules to ensure that the individual wires remain in the clamping points. 0010012105-002 Fig. 35 EMS BUS connection on the installer module Compress Hybrid 3400i AW – 6721861825 (2023/08)
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Fig. 36 Connection alternative for EMS bus Star configuration and connection in series with external junction Star configuration Serial connection Installation circuit board Accessory modules (room temperature-dependent controller, heating circuit module and solar module) Compress Hybrid 3400i AW – 6721861825 (2023/08)
▶ Connect the extension cable to the cable of the temperature sensor using a connection terminal (Fig. 38). 0010036206-001 Fig. 37 Remove the flow temperature sensor with cable Flow temperature sensor with cable Plug on the T0 connection Clip on the flow pipe Compress Hybrid 3400i AW – 6721861825 (2023/08)
If an accessory is already connected at the EMS connection: ▶ Connect the room thermostat at the connection EMS parallel to the accessory which is already installed ( Chapter 6.8.1 on page 23). Compress Hybrid 3400i AW – 6721861825 (2023/08)
▶ With radiators: set a temperature difference of 8 K. These settings are optimal for the heat pump. Check the temperature differential at high compressor heating output: ▶ Open the diagnosis menu. ▶ Select Monitored values. ▶ Select Heat pump. Compress Hybrid 3400i AW – 6721861825 (2023/08)
If no control element is actuated, the lighting turns off automatically (after approx. 30 s with the standard display, after approx. 30 min in the menu, after 24 h in the event of a fault). Compress Hybrid 3400i AW – 6721861825 (2023/08)
Table 10 Symbols in the display Faults You can find an overview of the faults that can appear on the display on our Internet page, which can be found at the address on the back of these instructions. Compress Hybrid 3400i AW – 6721861825 (2023/08)
2) Only available if Germany is set as country. Table 12 Settings in the auxiliary heater data menu 1) The buffer cylider option is not available for Air/Water indoor units with integrated buffer cylinder (AWMB). Compress Hybrid 3400i AW – 6721861825 (2023/08)
▶ During the annual inspection, check the correct function of all ▶ Restore the power supply to the indoor and outdoor unit. regulating, control and safety equipment and, where applicable, for correct settings. Function test ▶ Carry out function check ( Chap. 7.3). Compress Hybrid 3400i AW – 6721861825 (2023/08)
Data Protection Officer, Information Security and Privacy (C/ISP), of with other waste, and instead must be taken to the waste Robert Bosch GmbH, Postfach 30 02 20, 70442 Stuttgart, GERMANY. collection points for treatment, collection, recycling and You have the right to object, on grounds relating to your particular disposal.
3) If the minimum flow rate in the system cannot be ensured, a buffer cylinder is essential. 4) If cooling is available. 5) External auxiliary heater must be connected. Table 13 Technical data Compress Hybrid 3400i AW – 6721861825 (2023/08)
Pressure sensor hot gas refrigerant inlet plate heat exchanger TC0 return temperature sensor [10] Temperature sensor liquid refrigerant outlet plate heat exchanger [11] PC0 heating circuit recirculation pump [12] Particulate filter (filter shut-off valve; accessory) [13] Outdoor Unit [14] Heating installation Compress Hybrid 3400i AW – 6721861825 (2023/08)
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Install flange heating in the DHW cylinder in the following situation: purposes. When a freshwater station is installed, it must have its own control. Compress Hybrid 3400i AW – 6721861825 (2023/08)
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Fig. 46 Hydraulic diagram of a system (1 heating circuit, with bypass and heating pump), with bypass and heating pump; example) External booster heater Indoor Unit Outdoor Unit Additional heating pump Bypass (Chapter 4.6, page 9) Compress Hybrid 3400i AW – 6721861825 (2023/08)
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Fig. 47 Hydraulic diagram of a system (2 heating circuits, with bypass and heating pump; example) External booster heater Indoor Unit Outdoor Unit Additional heating pump (heating circuit 1) Bypass (Chapter 4.6, page 9) Heating pump (heating circuit 2) Mixing valve (heating circuit 2) Compress Hybrid 3400i AW – 6721861825 (2023/08)
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Appendix 400 / 230 V AC 0010036179-003 Fig. 48 Hydraulic diagram of a system (2 heating circuits, with cylinder; example) External booster heater Indoor Unit Outdoor Unit Buffer cylinder Compress Hybrid 3400i AW – 6721861825 (2023/08)
Yes | No Is the phase sequence of L1, L2, L3, N and PE in the indoor unit correct? Yes | No Does the power supply correspond to the installation instructions? Compress Hybrid 3400i AW – 6721861825 (2023/08)
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Yes | No Has the commissioning been performed correctly? Yes | No Does the installer have to perform additional measures? Comments: Installer signature: Customer or installer signature: Table 15 System Commissioning Report Compress Hybrid 3400i AW – 6721861825 (2023/08)
5810 Info Compressor Hardware current sensor false Check power supply lines. If no problem is detected, replace current sensor reading. compressor Driver. fault Table 16 Compress Hybrid 3400i AW – 6721861825 (2023/08)