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61
30AW
Control management
5
Unit Status and Defrost output or Tair Setpoint status
Based on the NUI code 147 set-up, the Output J7 Pin 2 (N-5 on the terminal block) could play for one of these Functions:
- ALARM: The intent of this output is to point out the alarm condition. This signal could be
used by an external control to verify if the Unit is able to operate with the requested function.
- Tair SETPOINT STATUS: The intent of this output is to give signal to a potential Fan Coil System when the T ambient
set-up measured by the NUI is reached. A hysteresis of +1°C / – 1°C is used. This signal could be used like a window
contact by the Fan Coil to stop the fans and/or the water valves.
NUI code 147
Sanitary water Input and 3 Way Valve Output
The combination of the Sanitary Water Inputs and Outputs should be able to manage an external Sanitary Water Boiler
and this is the logic that is driving this function:
- When an external Sanitary Water Boiler needs hot water from the units, it close the dry contact Pins 13-15 on the
terminal block.
- The routing that is always running in order to verify Input changes detect this need and the unit mode, whichever
it is the current status, become in HEAT mode at the max allowed WSP admitted as per the Enveloped Limitation
protection.
- In case of no alarm or defrost is active, the 3 Way Valve Output (pins N-10-18 on terminal block) become ON while, vice
versa, this output is always OFF in case of alarm and/or Defrost
- In addition, the NUI, if available, will display the relative Icon.
5IFDPEF 4)8JOPòNPEFEFUFSNJOFTJGUIF4)8-PHJDTIBMMCFBDUJWFPSOPUXIFO4ZTUFN.PEFJT0''*O)FBU
or Cool Mode the SHW logic is always actives.
NOTE: when SHW is ON, EHS is always OFF
SHW:
Sanitary
Hot Water
EHS:
External
Heat Source
WSP:
water set-point
NUI code 153
Water Pump On / Off Management
The water pump should be always ON apart if any alarms are active or if the unit is in OFF mode (selected or forced by the
unit itself ).
When the system turn OFF the water pump must be ON for additional 30 seconds.
8IFOUIFVOJUJTTUPQQFEGPSNPSFUIBOIPVSTUIFQVNQTIBMMCFTUBSUFEGPSTFDPOETTUBSUJOHUIFQVNQQFSJPEJDBMMZ
for few seconds increases the life time of the pump.
If OAT < temperature set in code 148
The main water pump activation depending by the code 155 (0. always ON, 1. always OFF or 2. ON/ OFF depending by
EHS)
SHW:
Sanitary
Hot Water
EHS:
External
Heat Source
NUI codes 148,
155
Additional water Pump On / Off Management
The management for the additional water pump, linked to the pin 12 on the X and H terminal block, is the following:
If OAT > temperature set in code 148
The additional water pump activation depending by the code 156
0/0''EFQFOEJOHCZNBJO81MPHJDJODBTFPG4)8BDUJWBUJPO"%%81JT0/
0/0''EFQFOEJOHCZNBJO81MPHJDJODBTFPG4)8BDUJWBUJPO"%%81JT0''
If OAT < temperature set in code 148
The additional water pump activation depending by the code 157 (0. always ON, 1. always OFF or 2. ON/ OFF depending
by EHS)
SHW:
Sanitary
Hot Water
EHS:
External
Heat Source
WP:
Water
Pump
ADD WP:
Additional
Water Pump
NUI codes 148,
156, 157
Flow Switch Protection
*GXBUFSJTOPUøPXJOHUISPVHIUIFIFBUFYDIBOHFSUIFDPNQSFTTPSDBOOPUUVSOPOBOEJGJUJTPOJUJTGPSDFEPò8BUFS
1VNQXJMMCFGPSDFE0OPS0òBTQFSøPXTXJUDIPVUQVU
- If flow switch contact is open (no water flow) Unit and WP turn OFF.
- The system retries to start for 5 times before displaying alarm.
The compressor is allowed to turn on if requested to when the water is flowing through the heat exchanger (flow switch
contact OFF) and timeguard has expired.
Settings:
Size 4kW = 300 l/h
Other Sizes = 420 l/h
SM_30AW.indd 61
14-03-2011 14:45:07
Summary of Contents for 30AWH004HB
Page 30: ...30 30AW GMC control size 004HB Electrical connections 4 SM_30AW indd 30 14 03 2011 14 42 18...
Page 32: ...32 30AW GMC control size 004XB Electrical connections 4 SM_30AW indd 32 14 03 2011 14 42 24...
Page 34: ...34 30AW GMC control size 006HB Electrical connections 4 SM_30AW indd 34 14 03 2011 14 42 29...
Page 36: ...36 30AW GMC control size 006XB Electrical connections 4 SM_30AW indd 36 14 03 2011 14 42 35...
Page 38: ...38 30AW GMC control size 006NX Electrical connections 4 SM_30AW indd 38 14 03 2011 14 42 40...
Page 40: ...40 30AW GMC control size 008HB Electrical connections 4 SM_30AW indd 40 14 03 2011 14 42 45...
Page 42: ...42 30AW GMC control size 008XB Electrical connections 4 SM_30AW indd 42 14 03 2011 14 42 50...
Page 44: ...44 30AW GMC control size 008NX Electrical connections 4 SM_30AW indd 44 14 03 2011 14 42 56...
Page 46: ...46 30AW GMC control size 012HB Electrical connections 4 SM_30AW indd 46 14 03 2011 14 43 01...
Page 48: ...48 30AW GMC control size 012XB Electrical connections 4 SM_30AW indd 48 14 03 2011 14 43 07...
Page 50: ...50 30AW GMC control size 012NX Electrical connections 4 SM_30AW indd 50 14 03 2011 14 43 13...
Page 51: ...51 30AW Inverter control size 015HB SM_30AW indd 51 14 03 2011 14 43 16...
Page 52: ...52 30AW GMC control size 015HB SM_30AW indd 52 14 03 2011 14 43 19...
Page 53: ...53 30AW Inverter control size 015XB SM_30AW indd 53 14 03 2011 14 44 58...
Page 54: ...54 30AW GMC control size 015XB SM_30AW indd 54 14 03 2011 14 45 01...
Page 100: ...100 30AW Carrier interfaces 7 SM_30AW indd 100 14 03 2011 14 46 25...