Specifications

TABLE OF CONTENTS
WMC 145D, 150D Dual Compressor.................. 34
THE NEW COMPRESSOR TECHNOLOGY.......4
Single Point Connection.......................................35
Environmental Responsibility ................................4
WMC250D and 290D Dual Compressor ............. 35
Greater Reliability ..................................................5
Single Point Connection.......................................36
Exceptional Control................................................5
Figure 23, Field Wiring Diagram......................... 37
Reduced Installation Costs .....................................6
VFD Line Harmonics...........................................38
The Compressor Technology..................................6
APPLICATION CONSIDERATIONS ............... 40
BENEFIT SUMMARY ....................................7
Condenser Water Temperature ............................. 40
CONTROL FEATURES ..................................8
System Water Volume........................................... 42
Control Architecture...............................................8
System Pumps ...................................................... 42
COMMUNICATION CAPABILITIES.................13
Use with On-Site Generators................................ 42
UNIT DESIGN FEATURES ...........................15
Optimum Water Temperatures and Flow.............. 43
CHILLER IDENTIFICATION ..........................19
Operating Limits: ................................................. 43
PRESSURE DROP CURVES ........................20
OPTIONS AND ACCESSORIES ................... 43
SOUND DATA ............................................23
REFRIGERANT RECOVERY UNITS ............. 46
DIMENSIONS.............................................24
REFRIGERANT MONITORS ........................ 47
PHYSICAL DATA AND WEIGHTS..................31
WARRANTY STATEMENT ........................... 49
Relief Valves.........................................................32
SPECIFICATIONS ...................................... 50
ELECTRICAL DATA ....................................33
WMC 145S, Single Compressor .......................... 34
*
*Unit Controllers are LONMARK certified with an optional LONWORKS communication module
Manufactured in an ISO Certified Facility
Document: Catalog WMC-4
Issue Date: August 2007
Replaces: Catalog WMC-2
©2007 McQuay International. Illustrations and data cover the McQuay International product at the time of publication and we
reserve the right to make changes in design and construction at anytime without notice. ™® The following are trademarks or
registered trademarks of their respective companies: BACnet from ASHRAE;
LONMARK, LonTalk, LONWORKS, and the
L
ONMARK logo are managed, granted and used by LONMARK International under a license granted by Echelon Corporation;
Compliant Scroll from Copeland Corporation; ElectroFin from AST ElectroFin Inc.; Modbus from Schneider Electric; FanTrol,
MicroTech II, Open Choices, and SpeedTrol from McQuay International.
Catalog WMC-4 3