3
GENERAL LEGEND
Each of the following drawings is replaced in the whole document by the corresponding explanation:
Up arrow
Down arrow
Return key
Start/stop button
DELTA T. Example: temperature difference between entering and leaving heat exchanger temperatures
means character is flashing
TABLE OF CONTENTS
1 - SAFETY CONSIDERATIONS..................................................................................................................................................4
1.1 - General .................................................................................................................................................................................4
1.2 - Avoid electrocution ..............................................................................................................................................................4
2 - GENERAL DESCRIPTION ......................................................................................................................................................4
2.1 - General .................................................................................................................................................................................4
2.2 - Abbreviations used ...............................................................................................................................................................4
3 - HARDWARE DESCRIPTION..................................................................................................................................................5
3.1 - General .................................................................................................................................................................................5
3.2 - Electrical supply to boards ...................................................................................................................................................5
3.3 - Light emitting diodes on boards ...........................................................................................................................................5
3.4 - The sensors ...........................................................................................................................................................................5
3.5 - The controls ..........................................................................................................................................................................6
3.6 - Connections at the user's terminal block ..............................................................................................................................6
4 - SETTING UP PRO-DIALOG PLUS CONTROL ...................................................................................................................8
4.1 - Local interface general features............................................................................................................................................8
4.2 - Unit start/stop control ...........................................................................................................................................................9
4.3 - Menus .................................................................................................................................................................................10
5 - PRO-DIALOG PLUS CONTROL OPERATION .................................................................................................................26
5.1 - Start/stop control ................................................................................................................................................................26
5.2 - Heating/cooling operation ..................................................................................................................................................28
5.3 - Evaporator water pump control ..........................................................................................................................................28
5.4 - Condenser water pump control...........................................................................................................................................28
5.5 - Control interlock contact ....................................................................................................................................................28
5.6 - Control point.......................................................................................................................................................................28
5.7 - Demand limit ......................................................................................................................................................................30
5.8 - Night mode .........................................................................................................................................................................30
5.9 - Capacity control..................................................................................................................................................................30
5.10 - Head pressure control .......................................................................................................................................................30
5.11 - Control of a boiler ............................................................................................................................................................31
5.12 - Master/slave assembly ...................................................................................................................................................... 31
5.13 - Controlling Pro-Dialog Plus units with a System Manager .............................................................................................31
6 - DIAGNOSTICS - TROUBLESHOOTING ............................................................................................................................32
6.1 - General ...............................................................................................................................................................................32
6.2 - Displaying alarms ...............................................................................................................................................................32
6.3 - Resetting alarms .................................................................................................................................................................32
6.4 - Alarm codes ........................................................................................................................................................................33