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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