McQuay ACZ Installation Manual

Installation and Maintenance Manual

IM 736-5

MicroTech II® Chiller Unit Controller BACnet® Communication Module (MS/TP)

• WSC Water-Cooled Centrifugal, Single-Compressor

• WDC Water-Cooled Centrifugal, Dual-Compressor

• WPV Water-Cooled Centrifugal, Single-Compressor

• HSC Water-Cooled Single-Compressor Centrifugal, Heat Recovery

• HDC Water Cooled Dual-Compressor Centrifugal, Heat Recovery

• TSC Water-Cooled Single-Compressor Centrifugal, Templifier™

Group: Controls Part Number: IM 736 Date: May 2007 Supercedes: IM 736-4

• WMC Water-Cooled Centrifugal, Magnetic Bearing

• WCC Water-Cooled Centrifugal, Counterflow

• AGZ Air-Cooled Global Scroll

• ACZ Air-Cooled Scroll Condensing Unit

• WGZ Water-Cooled Global Scroll

• AGS Air-Cooled Global Screw

• WGS Water-Cooled Global Screw

NOTICE

Use this manual to physically install the McQuay MicroTech II Communication Module into the rooftop unit controller and connect the chiller unit controller to your network. Use the appropriate McQuay Engineering Data (ED), known as the Protocol Information document, to integrate the unit into your network. The Protocol Information document contains addressing details, BACnet® protocol information, and a list of the data points available to the network. See the Reference Documents section of this manual for Protocol Information document numbers. MicroTech II control integration literature is available from your local McQuay International sales representative and

www.mcquay.com.

Contents

Figures .................................................................................................................................................. 2

Revision History ...................................................................................................................................3

Reference Documents........................................................................................................................... 3

Limited Warranty.................................................................................................................................. 4

Introduction........................................................................................................................... 5

Recognize Safety Symbols, Words and Labels..................................................................................... 5

General Information..............................................................................................................6

Description............................................................................................................................................ 7

Application............................................................................................................................................ 7

Component Data ................................................................................................................................... 8

Connectors ........................................................................................................................................ 8

Indicators .......................................................................................................................................... 8

Baud Rate Jumpers ........................................................................................................................... 8

Installation............................................................................................................................. 9

Mounting............................................................................................................................................... 9

Installing a new BACnet Communication Module........................................................................... 9

Mounting a BACnet Communication Module.................................................................................. 9

Replacing an Existing BACnet Communication Module............................................................... 10

Unit Setup for BACnet Network Control ....................................................................................... 12

Integration............................................................................................................................ 14

Access to Properties............................................................................................................................ 14

Configuring the Unit Controller...................................................................................................... 14

Network Connection........................................................................................................................... 14

BACnet MS/TP Addressing............................................................................................................ 14

Configure the BACnet Communication Module ................................................................................ 14

Upgrading BACnet Communication Module Firmware..................................................................... 14

Changing the Network Settings ...................................................................................................... 16

Configuring the HTTP Interface..................................................................................................... 20

Service Information.............................................................................................................27

Test Procedures................................................................................................................................... 27

Replacement Parts............................................................................................................................... 27

Appendix A: Hexadecimal Conversion Table .................................................................. 28

Figures

Figure 1. Building Automation System ................................................................................................ 7

Figure 2. BACnet Communication Module External Connectors (Top View)..................................... 8

Figure 3. BACnet Communication Module Mounted in a Centrifugal Chiller Control Panel............ 11

Figure 4. Serial Card Slot in Unit Controller...................................................................................... 12

Figure 5. Serial Card Slot Detail......................................................................................................... 12

Figure 6. BACnet Communication Module HTTP Interface Page..................................................... 16

Figure 7. Successful Ping and Response............................................................................................. 20

Figure 8. Jumpers in the “Open” Position........................................................................................... 22

Figure 9. Jumpers in the “Closed” Position........................................................................................ 22

Figure 10. BACnet Communication Module Configuration Page ..................................................... 23

2 IM 736-5

Revision History

IM736-0 January 24, 2003 Initial release IM736-1 May, 2005 Added WGS, WMC, HSC, HDC and TSC to front page and to the “Reference Documents” section

Edited part numbers in parts list Added note in “Unit Setup for BACnet Control” section Added note in “Changing the MSTP Data Transmission Rate” section

IM736-2 November, 2005 Added module location, power wiring, and set screen information for scroll and screw compressor

IM 736-3 June, 2006 Removed references to BACnet IP/Ethernet and moved them to I M 837 IM 736-4 October, 2006 Added new section for downloading firmware from mcquaybiz or mcquay.com IM 736-5 May, 2007 Removed re ferences to the baud rate switch and updated with baud rate jumpers. New figures 8 & 9

chillers. Added Table 1 and Password table.

Reference Documents

Number Company Title Source ANSI/ASHRAE 135-

2001

IMM AGS McQuay International MicroTech II Air-Cooled Screw Chiller Installation and Maintenance

IOMM ACZ/AGZ McQuay International MicroTech II Air-Cooled Condensing Unit Installation, Operation,

IOMM ACZ1 McQuay International MicroTech II Air-Cooled Condensing Unit Installation, Operation,

IOMM AGZ1 McQuay International MicroTech II Air-Cooled Scroll Chiller Installation, Operation, and

IOMM AGZ McQuay International MicroTech II Air-Cooled Scroll Chiller Installation, Operation, and

IOMM WGZ McQuay International MicroTech II Water-Cooled Scroll Chiller Installation Manual www.mcquay.com IOMM WPV McQuay International MicroTech II Centrifugal Chiller Installation, Operation, and

IOMM WSCWDC McQuay International MicroTech II Chiller Unit Controller Installation, Operation, and

OM AGS McQuay International MicroTech II Air-Cooled Screw Chiller Operating Manual www.mcquay.com OM CentrifMicro II McQuay International MicroTech II Unit Controller for Centrifugal Chillers and Templifiers

ED 15062 McQuay International MicroTech II Chiller Unit Controller Protocol Information, BACnet

OM WGS McQuay International MicroTech II Water-Cooled Screw Chiller Operating Manual www.mcquay.com OM WMC McQuay International MicroTech II Magnetic Bearing Compressor Chiller www.mcquay.com IOMM TSC McQuay International MicroTech II Templifier Single Compressor Centrifugal Installation,

American Society of Heating, Refrigerating and Air-Conditioning Engineers

BACnet® A Data Communication Protocol for Building Automation and Control Networks

Manual

and Maintenance Manual

Maintenance Manual

Operating Manual

MS/TP and L

Operation, and Maintenance Manual

ONWORKS

Networks

www.ashrae.org

www.mcquay.com

IM 736-5 3

Limited Warranty

Consult your local McQuay Representative for warranty details. Refer to Form 933-43285Y. To find your local McQuay Representative, go to

Notice

Copyright © 2007 McQuay International, Minneapolis MN. All rights reserved throughout the world. McQuay International reserves the right to change any information contained herein without prior notice. The user is responsible for determining whether this software is appropriate for his or her application.

® ™ The following are trademarks or registered trademarks of their respective companies: BACnet from the American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.;

ONWORKS and LONMARK from Echelon, Inc.; Windows from Microsoft Corporation; McQuay,

L MicroTech II and Templifier from McQuay International.

www.mcquay.com.

4 IM 736-5

Introduction

Recognize Safety Symbols, Words and Labels

The following symbols and labels are used throughout this manual to indicate immediate or potential hazards. It is the owner and installer’s responsibility to read and comply with all safety information and instructions accompanying these symbols. Failure to heed safety information increases the risk of property damage and/or product damage, serious personal injury or death. Improper installation, operation and maintenance can void the warranty.

! CAUTION

Hazards or unsafe practice CAN result in property damage, product damage, severe personal injury and or death.

NOTICE

Hazards or unsafe practices which CAN result in property damage, product damage, and or personal injury.

IM 736-5 5

General Information

This manual contains the information you need to install the BACnet® Communication Module, incorporate it into the network, and maintain it.

Electric shock hazard. Can cause personal injury or equipment damage.

This equipment must be properly grounded. Only personnel that are knowledgeable in the operation of the equipment being controlled must perform connections and service to the MicroTech II Chiller Unit Controller.

Static sensitive components. Can cause equipment damage.

Discharge any static electrical charge by touching the bare metal inside the control panel before performing any service work. Never unplug cables, circuit board terminal blocks, or power plugs while power is applied to the panel.

! WARNING

! CAUTION

NOTICE

This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with this instruction manual, may cause interference to radio communications. It has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his or her own expense. McQuay International disclaims any liability resulting from any interference or for the correction thereof.

6 IM 736-5

Description

Application

The BACnet Communication Module incorporates a MicroTech II Chiller Unit Controller into a BACnet Local Area Network (LAN). It supports the BACnet MS/TP (EIA 485) data link layer (physical layer).

The BACnet Communication Module mounts in the MicroTech II Chiller Unit Controller panel. The BACnet Communication Module is a rectangular metal enclosure with connectors and an indicator on the front panel.

The BACnet Communication Module connects the MicroTech II Chiller Unit Controller to the Building Automation System (BAS) on a BACnet Local Area Network. It is the interface adapter for the exchange of BACnet objects between the network and the unit controller. Figure 1 shows the BACnet Communication Module and MicroTech II Chiller Unit Controller integrated into a BAS.

Figure 1. Building Automation System

24 VAC

RS-485

RS-48 5

(Isolat ed)

BACnet

Comm unication

Mo d u le

Chil ler (RS-232)

Serial Card

Por t

net

Et h er n et

MicroTech II

Ch i lle r Un i t Co n t r o lle r

IM 736-5 7

Component Data

Figure 2 shows the external connectors of the BACnet Communication Module.

Figure 2. BACnet Communication Module External Connectors (Top View)

Connectors

The BACnet Communication Module uses two of the connectors mounted on the top panel.

Chiller (RS232)

This connector is the interface between the MicroTech II Chiller Unit Controller and the BACnet Communication Module.

BCM RS485 (Isolated)

This connector is the interface to the BACnet MS/TP network.

24 VAC

This connector is for the input power.

Indicators

The BACnet Communication Module has one indicator mounted on the top panel.

BCM

MCQ–3302742 Rev.___

Chiller (RS232)

BCM RS485

(Isolated)

BCM Ethernet

PWR

24VAC

PWR

This indicator lights when power is applied to the BACnet Communication Module.

Baud Rate Jumpers

Two baud rate jumpers are used to set the BACnet Communication Module data transmission rate on an MS/TP network. The jumpers, labeled W2 and W3, are located inside of the metal enclosure. The BACnet Communication Module ships from the factory at a default baud rate of 38400 bps. See Changing the MS/TP Data Transmission Rate for details.

8 IM 736-5

Installation

Mounting

Installing a new BACnet Communication Module

Mounting a BACnet Communication Module

The BACnet Communication Module can be factory or field installed. The sales representative should use the appropriate chiller selection software program in McQuayTools™ to include the BACnet Communication Module with the unit.

For field installation, the BACnet Communication Module kit may be ordered through the McQuay sales office or through McQuay Parts. The BACnet Communication Module kit includes the BACnet Communication Module, cables, serial card connector, and this installation manual. The BACnet Communication Module is also sold separately (i.e. just the module itself) through McQuay Parts.

Replacement Parts for part numbers.

See

You can add a new BACnet Communication Module to the MicroTech II control system in order to incorporate it into an existing BACnet network.

To mount a BACnet Communication Module:

1. Remove power from the MicroTech II Chiller Unit Controller.

2. See

Table 1 for BACnet Communication Module location and mount the module. Where studs

are indicated, mount the module on the studs with the hardware included in the kit (see

Figure 3). For other locations, drill mounting holes using the module as a template, exercising care not to drill through to a component or wiring. Secure the module with machine screws.

Table 1. Module Location and Power Wiring

Chiller Model

AGS-B HOT>TB1-60, COM>TB1-75 Studs in control panel AGZ-A/ACZ-A HOT>31-32, COM>21-28 Studs inside left-hand control panel door AGZ-B/ACZ-B HOT>42-54, COM>81-84 Upper right-hand corner of control panel door AGS-C HOT>TB1-60, COM>TB1-75 Studs in control panel HSC HOT>UTB1-70, COM>UTB1-71 Studs on door of the unit control panel HDC HOT>UTB1-70, COM>UTB1-71 Studs on door of the unit control panel TSC HOT>UTB1-70, COM>UTB1-71 Studs on door of the unit control panel WCC HOT>UTB1-70, COM>UTB1-71 Studs on door of the unit control panel WDC HOT>UTB1-70, COM>UTB1-71 Studs on door of the unit control panel WGS HOT>42-54, COM>81-84 Mount horizontally behind the unit controller WGZ HOT>31-43, COM>56-60 Upper right-hand corner of control panel door WMC HOT>UTB1-70, COM>UTB1-71 Studs on top of the panel door WPV HOT>UTB1-70, COM>UTB1-71 Studs on door of the unit control panel WSC HOT>UTB1-70, COM>UTB1-71 Studs on door of the unit control panel

Power Connection Terminals Mounting Location

NOTES:

a. If a range of terminal numbers is given, such as 42-54, connect to any terminal in the range.

b. The two-pin power connector wires are marked HOT and COM (common).

3. Locate the Serial Card slot on the MicroTech II Ch iller Unit Controller (see

Figure 4.)

4. Remove the cover from the Serial Card slot if it has not already been removed. Use a small

screwdriver to pry the cover off from one end.

5. Remove the plastic knock-out in the cover.

IM 736-5 9

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