Table Of Contents - Carrier 30RQ Operation And Maintenance Instructions

1 - sAFeTY COnsIDeRATIOns ............................................................................................................................................... 3
1.1 - General ...................................................................................................................................................................................... 3
1.2 - Avoid electrocution .................................................................................................................................................................. 3
2 - GeneRAL DesCRIPTIOn .................................................................................................................................................... 3
2.1 - General ...................................................................................................................................................................................... 3
2.2 - Abbreviations used................................................................................................................................................................... 3
3 - HARDWARe DesCRIPTIOn ............................................................................................................................................... 4
3.1 - General ...................................................................................................................................................................................... 4
3.2 - Electrical supply to boards ...................................................................................................................................................... 4
3.3 - Light emitting diodes on boards ............................................................................................................................................. 4
3.4 - The sensors ................................................................................................................................................................................ 4
3.5 - The controls ............................................................................................................................................................................... 5
3.6 - Connections at the user's terminal block .............................................................................................................................. 5
4 - seTTInG UP PRO-DIALOG PLUs COnTROL ............................................................................................................... 7
4.1 - User interface general features ............................................................................................................................................... 7
4.2 - Unit start/stop control.............................................................................................................................................................. 8
4.3 - Menus ........................................................................................................................................................................................ 9
5 - PRO-DIALOG PLUs COnTROL OPeRATIOn............................................................................................................. 28
5.1 - Start/stop control .................................................................................................................................................................... 28
5.2 - Heating/cooling/standby operation ...................................................................................................................................... 28
5.3 - Evaporator water pump control ........................................................................................................................................... 29
5.4 - Control interlock contact ...................................................................................................................................................... 29
5.5 - Evaporator antifreeze protection ......................................................................................................................................... 29
5.6 - Control point........................................................................................................................................................................... 29
5.7 - Demand limit .......................................................................................................................................................................... 31
5.8 - Night mode .............................................................................................................................................................................. 31
5.9 - Capacity control ..................................................................................................................................................................... 31
5.10 - Head pressure control.......................................................................................................................................................... 31
5.11 - Defrost function ................................................................................................................................................................... 31
5.12 - Additional electric heater stage control ............................................................................................................................ 31
5.13 - Control of a boiler ................................................................................................................................................................ 31
5.14 - Master/slave assembly ......................................................................................................................................................... 31
5.15 - Optional heat reclaim module ............................................................................................................................................ 32
5.16 - Free-cooling option .............................................................................................................................................................. 32
6 - DIAGnOsTICs - TROUBLesHOOTInG ......................................................................................................................... 33
6.1 - General .................................................................................................................................................................................... 33
6.2 - Displaying alarms ................................................................................................................................................................... 33
6.3 - Resetting alarms ..................................................................................................................................................................... 33
6.4 - Alarm codes ............................................................................................................................................................................ 34
GENERAL LEGEND
Each of the following drawings is replaced in the whole document by the corresponding explanation:
Start/stop button
Return key
Down arrow
Up arrow
DELTA T. Example: temperature difference between entering and leaving heat exchanger temperatures
Means character is flashing
The cover graphics are 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.
2
COnTenTs