EWWQ090G ÷ EWWQ720L - R410A - Water-cooled scroll chillers
EWLQ090G ÷ EWLQ720L - R410A - Condenser less
EWHQ100G ÷ EWHQ400G - R410A - Heat pump scroll chillers
EWAQ-G 075 - R410A - Air-cooled scroll chillers
EWAQ- - R410A - Air-cooled scroll chillers
EWYQ- - R410A - Air-cooled scroll heat pumps
Air and Water cooled scroll chillers & heat pump
EWWQ - EWLQ - EWHQ
EWAQ - EWYQ
Air or Water cooled scroll chiller &
heat pump
D-EOMHW00107-15EN
Table of Contents
1 SAFETY CONSIDERATIONS .................................................................................................. 6
1.1 General ............................................................................................................................. 6
1.2 Avoid electrocution ........................................................................................................... 6
1.3 Safety Devices .................................................................................................................. 7
1.3.1 General safety devices .............................................................................................. 7
1.3.2 Circuit safety devices ................................................................................................. 7
1.3.3 Component safety devices ......................................................................................... 7
1.4 Available sensors .............................................................................................................. 9
1.4.1 Pressure transducers ................................................................................................. 9
1.4.2 Temperature sensors ................................................................................................. 9
1.4.3 Thermistors ................................................................................................................ 9
1.5 Available Controls ............................................................................................................. 9
1.5.1 Evaporator - Condenser pumps ................................................................................. 9
1.5.2 Compressors ............................................................................................................. 9
1.5.3 Expansion Valve ........................................................................................................ 9
1.5.4 Four Way Valve ......................................................................................................... 9
1.6 Abbreviations used ......................................................................................................... 10
1.7 Customer Terminal Block Connections ........................................................................... 10
1.7.1 Connections description and purpouse .................................................................... 10
2 GENERAL DESCRIPTION .................................................................................................... 13
2.1 Overview ......................................................................................................................... 13
2.2 Controller Operating Limits ............................................................................................. 13
2.3 Controller Architecture .................................................................................................... 13
2.4 Communication Modules ................................................................................................ 14
2.4.1 Modbus Module installation ..................................................................................... 15
2.4.2 Bacnet Module installation ....................................................................................... 15
2.4.3 Lon Module installation ............................................................................................ 16
3 Using the Controller ............................................................................................................... 16
3.1 General Recommendation .............................................................................................. 17
3.2 Browsing ......................................................................................................................... 17
3.3 Passwords ...................................................................................................................... 18
