S&P ECOWATT PLUS CRHB 400 N Manual page 12

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INDEX

1. INTRODUCTION ............................................................................................................................................................. 13

2. SAFETY REGULATIONS AND "CE" MARKING ............................................................................................................... 13

3. GENERAL INSTRUCTIONS ............................................................................................................................................ 13

4. DESCRIPTION ................................................................................................................................................................ 13

4.1. Locations ................................................................................................................................................................ 13

4.2. Wiring diagram and internal board ........................................................................................................................ 14

5. OPERATION MODES ...................................................................................................................................................... 15

5.1. Constant pressure (COP) ........................................................................................................................................ 16

5.2. Constant airﬂ ow (CAV) ............................................................................................................................................ 17

5.3. Variable aiﬂ ow volume (VAV) .................................................................................................................................. 17

5.4. Minimum / maximum ............................................................................................................................................. 18

6. OTHER FUNCTIONS ...................................................................................................................................................... 18

6.1. Remote stop/start .................................................................................................................................................. 18

6.2. Boost ....................................................................................................................................................................... 18

6.3. Night ....................................................................................................................................................................... 19

6.4. Alarm relay ............................................................................................................................................................. 19

6.5. Modbus ................................................................................................................................................................... 19

6.5.1. Basic characteristics .................................................................................................................................... 19

6.5.2. Parameterization via Modbus ....................................................................................................................... 19

6.5.3. Modbus network ........................................................................................................................................... 19

6.6. Timer RTC ............................................................................................................................................................... 20

7. MAINTENANCE ............................................................................................................................................................. 21

8. PUTTING OUT OF SERVICE AND RECYCLING .............................................................................................................. 21

9. MODBUS MAP ............................................................................................................................................................... 32

Table of Contents