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Table of contents
1 - SAFETY CONSIDERATIONS ........................................................................................................................................... 4
1.1 - General ........................................................................................................................................................................... 4
1.2 - Avoiding 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 - Electronic boards ............................................................................................................................................................ 5
3.2.1 - The basic board ........................................................................................................................................................ 5
3.2.2 - Slave boards ............................................................................................................................................................. 5
3.2.3 - The user interface..................................................................................................................................................... 6
3.2.4 - Connections between boards ................................................................................................................................... 6
3.2.5 - Slave board address ................................................................................................................................................. 6
3.2.6 - Power supply to the boards ...................................................................................................................................... 6
3.2.7 - Light emitting diodes on boards
3.3 - The controls .................................................................................................................................................................... 7
3.3.1 - Electronic expansion valve EXV ............................................................................................................................. 7
3.3.2 - The head pressure controls ...................................................................................................................................... 7
3.3.3 - The evaporator pump ............................................................................................................................................... 7
3.3.4 - The condenser pump ................................................................................................................................................ 7
3.3.5 - The evaporator heater .............................................................................................................................................. 7
3.3.6 - Pressure sensors ....................................................................................................................................................... 7
3.3.7 - Thermistors .............................................................................................................................................................. 8
3.4 - Connections at customer’s terminal block ..................................................................................................................... 8
3.4.1 - Fault reporting on circuits A and B ......................................................................................................................... 8
3.4.2 - Evaporator pump contactor control ......................................................................................................................... 8
3.4.3 - Condenser pump contactor control .......................................................................................................................... 8
3.4.4 - Evaporator heater contactor control......................................................................................................................... 9
3.4.5 - Remote start/stop volt-free contact .......................................................................................................................... 9
3.4.6 - Remote volt-free contact for cooling temperature setpoint selection ...................................................................... 9
3.4.7 - Remote heat/cool volt-free contact .......................................................................................................................... 9
3.4.8 - Remote heat reclaim volt-free contact ..................................................................................................................... 9
3.4.9 - Demand limit volt-free contact ................................................................................................................................ 9
3.4.10 - Evaporator water loop control and condenser water flow or thermostat box control volt-free contacts............... 9
3.4.11 - 0-10 V d.c. input for setpoint reeset or demand limit .......................................................................................... 10
3.4.12 - Condenser water valve control contacts .............................................................................................................. 10
3.4.13 - 24 V a.c. contact .................................................................................................................................................. 10
3.4.14 - Connections to the CCN ...................................................................................................................................... 10
3.4.15 - Heat reclaim condenser water valve connection.................................................................................................. 10
4 - SETTING UP PRO-DIALOG PLUS CONTROL.......................................................................................................... 11
4.1 - General ......................................................................................................................................................................... 11
4.2 - Main interface............................................................................................................................................................... 11
4.2.1 - Description ............................................................................................................................................................. 11
4.2.2 - Operating types ...................................................................................................................................................... 11
4.2.3 - Displaying/modifying a menu item ....................................................................................................................... 12
4.2.4 - Description of the INFORMATION menu............................................................................................................ 15
4.2.5 - Description of the TEMPERATURES menu ........................................................................................................ 17
4.2.6 - Description of the PRESSURE menu .................................................................................................................... 17
4.2.7 - SETPOINT menu................................................................................................................................................... 18
4.2.8 - Description of the INPUT menu ............................................................................................................................ 21
4.2.9 - Description of the OUTPUT/TEST menu ............................................................................................................. 23
The cover photograph is solely for illustration, and forms no part of any offer for sale or any sale contract. The manufacturer
reserves the right to change the design at any time without notice.
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