Manual Bosch Compress 3400i AWS (page 2 of 44) (English)

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Table of contents

Compress 3400i AWS – 6721852066 (2023/01)

Table of contents

1 Explanation of symbols and safety instructions . . . . . . . . . . . 3

1.1 Explanation of symbols . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.2 General safety instructions . . . . . . . . . . . . . . . . . . . . . . . 3

1.2.1 Refrigerant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2 Regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2.1 Water quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

3 Product description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

3.1 Supplied parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

3.2 Information on the indoor unit. . . . . . . . . . . . . . . . . . . . . 7

3.3 Declaration of Conformity . . . . . . . . . . . . . . . . . . . . . . . . 7

3.4 Type plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.5 Functional principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.6 Product overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.7 Product dimensions and minimum clearances. . . . . . . . 8

3.8 Connection dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . 8

4 Preparing for installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

4.1 Considerations for assembling the indoor unit . . . . . . . 9

4.2 Heating system minimum volume and flow . . . . . . . . . . 9

5 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

5.1 Transport and storage . . . . . . . . . . . . . . . . . . . . . . . . . . 10

5.2 Insulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

5.3 Checklist. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

5.4 Removing the front cover of the indoor unit . . . . . . . . . 10

5.5 Assembling the drip tray . . . . . . . . . . . . . . . . . . . . . . . . 11

5.6 Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

5.6.1 Connecting the indoor unit with integrated electric

booster heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

5.6.2 Filling the outdoor unit, indoor unit and heating

system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

5.6.3 Primary circulation pump (PC0) . . . . . . . . . . . . . . . . . . 13

5.6.4 Heating circuit pump (PC1). . . . . . . . . . . . . . . . . . . . . . 13

5.7 Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

5.7.1 Connecting the indoor unit . . . . . . . . . . . . . . . . . . . . . . 14

5.7.2 Connections to installer module of the indoor unit . . . . 15

5.7.3 CAN-BUS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

5.7.4 EMS BUS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

5.7.5 Fitting temperature sensors . . . . . . . . . . . . . . . . . . . . . 17

5.7.6 External connections . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

5.7.7 Terminals for electrical connections . . . . . . . . . . . . . . . 18

6 Commissioning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

6.1 Commissioning checklist. . . . . . . . . . . . . . . . . . . . . . . . 18

6.2 Venting the indoor unit. . . . . . . . . . . . . . . . . . . . . . . . . . 19

6.3 Adjusting the operating pressure of the heating

system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

6.4 Pressure switch and overheating protection . . . . . . . . 20

6.5 Function test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

6.5.1 Operating temperatures . . . . . . . . . . . . . . . . . . . . . . . . 20

7 Operation without the outdoor unit (individual

operation) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

8 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

8.1 Particle filter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

8.2 Replacing components . . . . . . . . . . . . . . . . . . . . . . . . . 21

9 Installation of accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

9.1 CAN-BUS accessories . . . . . . . . . . . . . . . . . . . . . . . . . . 22

9.2 EMS-BUS for accessories . . . . . . . . . . . . . . . . . . . . . . . 22

9.3 External inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

9.4 Installation of the domestic hot water cylinder . . . . . . 23

9.5 DHW cylinder temperature sensor TW1. . . . . . . . . . . . 24

9.6 Diverter valve VW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

9.7 DHW circulation pump PW2 (accessory). . . . . . . . . . . 25

9.8 Several heating circuits (with heating circuit

module) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

9.9 Installation with swimming pool . . . . . . . . . . . . . . . . . . 25

9.10 Connect-Key K 30 RF. . . . . . . . . . . . . . . . . . . . . . . . . . . 26

10 Environmental protection and disposal . . . . . . . . . . . . . . . . . 26

11 Technical information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

11.1 Specifications - Indoor unit with integrated

electric booster heater . . . . . . . . . . . . . . . . . . . . . . . . . 26

11.2 Primary circulation pump diagram (PC0) . . . . . . . . . . 27

11.3 System solutions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

11.3.1 Explanations of the system solutions . . . . . . . . . . . . . . 28

11.3.2 Bypass of the heating system . . . . . . . . . . . . . . . . . . . . 29

11.3.3 System with integrated booster heater, DHW and

heating circuit without bypass and mixing valve . . . . . 30

11.3.4 System with integrated booster heater, DHW and

heating circuit with or without mixing valve and

with bypass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

11.3.5 System with integrated booster heater, buffer,

DHW and heating circuit with or without mixing

valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

11.3.6 Explanation of symbols . . . . . . . . . . . . . . . . . . . . . . . . . 33

11.4 Wiring diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

11.4.1 Installer module of indoor unit with integrated

electric booster heater . . . . . . . . . . . . . . . . . . . . . . . . . 34

11.4.2 CAN & EMS BUS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

11.4.3 Wiring diagram for 5.85kW 230V~ electric

booster heater, CS3400iAWS 4-10 OR-S 230V~ . . . . 36

11.4.4 Wiring diagram for 5.85kW 3N ~ electric booster

heater, CS3400iAWS 4-10 OR-S 230V~. . . . . . . . . . . 36

11.4.5 400V 3N~ indoor unit with 230V~ outdoor unit . . . . . 37

11.4.6 Connection alternative for EMS bus . . . . . . . . . . . . . . . 38

11.4.7 EVU/SG wiring diagram for the indoor unit with an

integrated electric booster heater . . . . . . . . . . . . . . . . 38

11.4.8 Photovoltaic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

11.5 Cable scheme. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

11.6 Measurements from temperature sensors . . . . . . . . . . 39

12 System Commissioning Report . . . . . . . . . . . . . . . . . . . . . . . . 40

13 Maintenance protocol, refrigerant (log book) . . . . . . . . . . . 41

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