McQuay MicroTech II User Manual

Page 2 OM 780-2
Table of Contents
Figures...................................................................................................................................................4
Tables ....................................................................................................................................................5
Limited Warranty...................................................................................................................................6
Notice ....................................................................................................................................................6
Reference Documents............................................................................................................................7
Revision History....................................................................................................................................7
CSM Software ID ..................................................................................................................................7
Chiller Unit Controller Software Compatibility.....................................................................................8
Introduction............................................................................................................................9
Getting Started.....................................................................................................................11
Connecting to the CSM........................................................................................................................11
PC Requirements .............................................................................................................................11
Connecting Your PC to the CSM.....................................................................................................11
Changing the CSM’s IP Address and Date/Time.............................................................................13
Connecting to the CSM’s User Interface .........................................................................................16
Connecting to the CSM’s User Interface Remotely Using a Modem...............................................18
Using the CSM’s User Interface ......................................................................................................18
Password Protection.............................................................................................................................20
Configuring User Accounts..............................................................................................................20
User Account Categories .................................................................................................................21
Connecting Chillers and Remote I/O to the CSM .............................................................22
Commissioning L
ONWORKS Devices (Chillers or Remote I/O) ..........................................................22
Commissioning a Chiller to a CSM Chiller Number........................................................................23
Commissioning a Remote I/O Module to a CSM Remote I/O Letter...............................................24
Setting up the CSM’s Chiller Data.......................................................................................................25
Communication Loss Control at the Chiller.....................................................................................26
Setting Up the CSM’s I/O....................................................................................................................27
Chiller Unit Controller Settings...........................................................................................................30
Configuring the Chiller System Manager ..........................................................................32
System Control ....................................................................................................................................32
CSM Control Mode .........................................................................................................................32
Rapid Restart ...................................................................................................................................33
Low Ambient Lockout.....................................................................................................................33
Chiller Sequencing Control..................................................................................................................34
Sequence Order................................................................................................................................34
Sequencing Logic.............................................................................................................................36
Special Sequencing Logic................................................................................................................40
Designating a Standby Chiller .........................................................................................................42
Sequencing Chillers with Series-Piped Evaporators........................................................................42
Stage-Up Inhibiting..........................................................................................................................44
Load Limiting Control.........................................................................................................................45
Demand Limiting.............................................................................................................................45
Load Balancing................................................................................................................................47
Soft Loading ....................................................................................................................................48
Chilled Water Temperature Control ....................................................................................................49
Temperature Control........................................................................................................................50
Setpoint Reset..................................................................................................................................52
Cooling Tower Control........................................................................................................................56
Tower Staging Logic........................................................................................................................59
Tower Bypass Valve Control...........................................................................................................65
Chilled Water Flow Control.................................................................................................................67
Pump Logic: Single Pump ...............................................................................................................72
Pump Logic: Lead/Standby (Auto Lead, Pump 1 Lead, Pump 2 Lead)...........................................72
Pump Logic: Sequenced Constant-Speed Pumps.............................................................................74
Pump Logic: Multiple Variable-Speed Pumps.................................................................................77
Pump Speed Control........................................................................................................................79

McQuay MicroTech II Specifications

General

Brand	McQuay
Model	MicroTech II
Category	Controller
Language	English