Inspection After Commissioning - Emerson Chilled Water Series User Manual

Chapter 4 System Start-Up Commissioning 33
5. Change the temperature setting and start the refrigeration, or start the refrigeration manually. Record the
water flow quantity of the system and water resistance.
To start the refrigeration (open the water flow control valve), you should:
Change the temperature setting (see 5.7 SERVICE MENUS) to 9°F lower than the indoor temperature. The
control system should then trigger the call for refrigeration, and the water flow control valve switches on.
After at least three minutes of refrigeration, change the temperature setting to 9°F higher than the indoor
temperature. If the water flow control valve is closed, it means the refrigeration function is normal.
6. Change the humidity setting and the unit will enter a dehumidifying status. Record the water flow quantity
of the system and water resistance.
To trigger dehumidification, you should:
Change the humidify setting (see 5.7 SERVICE MENUS) to 10% lower than the indoor relative humidity. The
control system should then trigger the call for dehumidification, the water flow control valve switches on.
Note that during the commissioning process, if the indoor temperature is 5.4°F higher than the temperature
setting, the system may enter the forced refrigeration mode, and the dehumidification demand will not be
responded. After commissioning, restore the humidity setting to the default or the original setting.

4.2.3 Inspection After Commissioning

1. Check that all output functions are automatic;
2. Check that the temperature & humidity settings and control precisions are set reasonably;
3. Make sure all the other functions are set reasonably.
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