Daikin WMC Specifications Page 1

Installation and Maintenance Manual IMM WMC-2 Group: Chiller Part Number: 331374601 Effective: March 2008 Supersedes: December 2007 Water-Cooled

10 Centrifugal Chillers IMM WMC-2 Figure 6, WMC 145D (See page 14 for notes.)

IMM WMC-2 Centrifugal Chillers 11 Figure 7, WMC 150D, 2-Pass Evaporator, 2-Pass Condenser ( See page 14 for notes.)

12 Centrifugal Chillers IMM WMC-2 Figure 8, WM C 250D, 2-Pass Evaporator, 2-Pass Condenser (NOTE: See page 14 for notes.)

IMM WMC-2 Centrifugal Chillers 13 Figure 9, WMC 290D, 2-Pass Evaporator, 2- Pass Condenser (See page 14 for notes.)

14 Centrifugal Chillers IMM WMC-2 Drawing Notes NOTES: 1. All dimensions are in Inches and [Millimeters] unless noted otherwise. 2. Final connecti

IMM WMC-2 Centrifugal Chillers 15 Mounting/Lifting Weights Figure 10 Shipping Weight, lbs (kg) Lifting Location inch (mm) WMC Model Ves

16 Centrifugal Chillers IMM WMC-2 Pressure Drop Curves Figure 11, WMC 150, Evaporator Pressure Drops Figure 12, WMC 150, Condenser Pressure Drops W

IMM WMC-2 Centrifugal Chillers 17 Relief Valves As a safety precaution and to meet code requirements, each chiller is equipped with pressure relief

18 Centrifugal Chillers IMM WMC-2 Using the ASHRAE formula and basing calculations on the 225 psi design yields a conservative pipe size,

IMM WMC-2 Centrifugal Chillers 19 Electrical Data Wiring, fuse and wire size must be in accordance with the National Electric Code (NEC). Important

2 Centrifugal Chillers IMM WMC-2 Table of Contents Introduction...3 Nomenclature...

20 Centrifugal Chillers IMM WMC-2 WMC 145S, Single Compressor Table 6, Standard Single Point Connection, 1 Compressor Only Field Wire RLA (Per Comp

IMM WMC-2 Centrifugal Chillers 21 Single-point Connection, Optional Table 9, WMC 145D, 150D Electrical Data Field Wire RLA (Per Compressor) LRA Mini

22 Centrifugal Chillers IMM WMC-2 Single Point Connection, Optional Field Wire RLA (Per Compressor) LRA Minimum Circuit Ampacity (MCA) Quantity Wir

80* CHILLED WATER PUMP STARTERSEWI-2CP2CP1NOTE 11NOTE 11NOTE 11*NOTE 8NOTE 8NOTE 9HOA C4* COOLING TOWER FIRST STAGE STARTER* COOLING TOWE

24 Centrifugal Chillers IMM WMC-2 8. Optional customer supplied 115 VAC, 25-VA maximum coil rated, chilled water pump relay (ep1 & 2) may be w

1. Set the generator to always run five minutes longer than the unit start-to-start timer, which could be set from 15 to 60 minutes. The actual sett

26 Centrifugal Chillers IMM WMC-2 1. Keep the PCC as far from the drives (close to the power source) as possible. 2. Increase the size (decrease t

The filters are current-rated devices. In order to properly size a filter, it is necessary to know the operating voltage and the i

28 Centrifugal Chillers IMM WMC-2 Multiple Chiller Setup WMC dual compressor units have their main control components factory wired to an internal n

Figure 17, Communication Wiring Chiller A485OPDRCABUCMJ10J11BLU/WHTWHT/BLUSHIELD(+)(-)J11 PORTChiller BPP MicroTech II Operator Interface Touch Scree

IMM WMC-2 Centrifugal Chillers 3 Introduction General Description The McQuay Model WMC Centrifugal Water Chillers are complete, self-contained, auto

30 Centrifugal Chillers IMM WMC-2 Operating Sequence For multiple-chiller, parallel operation, the MicroTech II controllers are tied together by a c

Operation Operator Responsibilities It is important that the operator become familiar with the equipment and the system before attempting to operate t

32 Centrifugal Chillers IMM WMC-2 System Water Volume It is important to have adequate water volume in the system to provide an opportunity for the

Building Automation Systems All MicroTech II controllers with Open Choices™ are capable of BAS communications, providing easy integration and compreh

34 Centrifugal Chillers IMM WMC-2 Protocols Supported Table 14, Standard Protocol Data Protocol Physical Layer Data Rate Controller Other BACnet

Figure 19, Unit Control Panel Capacity Control System The capacity of the chiller is controlled by: 1) Staging the compressors on and off; 2) By a

36 Centrifugal Chillers IMM WMC-2 The speed control and vane control work in conjunction. As load decreases, compressor speed is reduced as low as

when it is under control from a remote switch or BAS. When these buttons are pressed, the unit will cycle through its normal starting or stoppin

38 Centrifugal Chillers IMM WMC-2 Maintenance !DANGER Wait 10 minutes after compressor shutdown before opening any compressor access panel. The DC

Electrical System Maintenance of the electrical system involves the general requirement of keeping contacts clean and connections tight and checking o

4 Centrifugal Chillers IMM WMC-2 Installation Receiving and Handling The unit should be inspected immediately after receipt for possible damage. All

40 Centrifugal Chillers IMM WMC-2 complete the pump down, condense the refrigerant, and pump it into the condenser or pumpout vessel

pumps operating, liquid refrigerant will flow into the condenser. Approximately 75% of the total requirement estimated for the unit can be charged in

42 Centrifugal Chillers IMM WMC-2 Maintenance Schedule I. Compressor A. Performance Evaluation (Log & Analysis

Service Programs It is important that an air conditioning system receive adequate maintenance if the full equipment life and full system benefits are

44 Centrifugal Chillers IMM WMC-2

(800) 432-1342 • www.mcquay.com IMM WMC-2, (12/07) This document contains the most current product information as of this printing. For the m

IMM WMC-2 Centrifugal Chillers 5 Location and Mounting Clearance The unit must be mounted on a level concrete or steel base and must be located to p

6 Centrifugal Chillers IMM WMC-2 The piping should include thermometers at the inlet and outlet connections and air vents at the high points. The wa

IMM WMC-2 Centrifugal Chillers 7 Cooling Towers The condenser water flow rate must be checked to be sure that it conforms to the system design. A t

8 Centrifugal Chillers IMM WMC-2 Field Insulation If the optional factory-installation of thermal insulation is not ordered, insulation should be f

IMM WMC-2 Centrifugal Chillers 9 Dimensions Figure 5, WMC 145S (NOTE: See page 14 for notes.)