Carrier 30XW150-400 User Manual

AQUAFORCE

30XW150-400

Water-Cooled Liquid Chillers

Controls, Start-Up, Operation, Service

and Troubleshooting

CONTENTS

Page

SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . 2

GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

Conventions Used in This Manual. . . . . . . . . . . . . . . . 3

Display Module Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

• TOUCH PILOT™ DISPLAY

• NAVIGATOR™ DISPLAY MODULE

CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-18

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Main Base Board (MBB) . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Compressor Protection Module (CPM) . . . . . . . . . . 10

Electronic Expansion Valve (EXV) Board . . . . . . . . 13

MLV/Condenser Board . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Enable-Off-Remote Contact Switch (SW1). . . . . . . 16

Emergency On/Off Switch (SW2) . . . . . . . . . . . . . . . . 16

Energy Management Module (EMM) . . . . . . . . . . . . . 16

Local Equipment Network. . . . . . . . . . . . . . . . . . . . . . . 17

Board Addresses. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Touch Pilot Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Control Module Communication. . . . . . . . . . . . . . . . . 17

•RED LED

• GREEN LED

• YELLOW LED

Carrier Comfort Network

Remote Alarm and Alert Relays . . . . . . . . . . . . . . . . . 18

CONFIGURATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-46

Touch Pilot Operation Configuration Tables. . . . . 18

Machine Control Methods . . . . . . . . . . . . . . . . . . . . . . . 20

Machine On/Off Control . . . . . . . . . . . . . . . . . . . . . . . . . 20

• TOUCH PILOT MACHINE CONTROL

• NAVIGATOR DISPLAY MACHINE CONTROL

Entering Fluid Control Option . . . . . . . . . . . . . . . . . . . 25

Cooling Set Point Selection . . . . . . . . . . . . . . . . . . . . . 25

• SET POINT OCCUPANCY

Chilled Water Fluid Type Selection . . . . . . . . . . . . . . 27

• FRESH WATER

• BRINE OR GLYCOL OPERATION

Cooler Pump Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

• COOLER PUMP CONTROL CONFIRGURATIONS

Machine Start Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Circuit/Compressor Staging and Loading . . . . . . . 29

• CIRCUIT/COMPRESSOR STAGING

• CIRCUIT/COMPRESSOR LOADING

Minimum Load Control . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Dual Chiller Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

• DUAL CHILLER CONTROL FOR PARALLEL APPLICATIONS

• DUAL CHILLER PUMP CONTROL FOR PARALLEL CHILLER APPLICATIONS

• DUAL CHILLER CONTROL FOR SERIES APPLICATIONS

• DUAL CHILLER PUMP CONTROL FOR SERIES CHILLER APPLICATIONS

(CCN) Interface. . . . . . . 18

Page

Ramp Loading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Temperature Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

• RETURN WATER RESET

• SPACE TEMPERATURE RESET

• 4-20 mA TEMPERATURE RESET

Demand Limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

• SWITCH CONTROLLED DEMAND LIMIT

• EXTERNALLY POWERED CAPACITY BASED DEMAND LIMIT

• EXTERNALLY POWERED CURRENT BASED DEMAND LIMIT

• CCN LOADSHED CONTROLLED DEMAND LIMIT

Ice Storage Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Broadcast Configuration . . . . . . . . . . . . . . . . . . . . . . . . 41

•ACTIVATE

• BROADCAST ACKNOWLEDGER

Alarm Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

• ALARM ROUTING CONTROL

• ALARM EQUIPMENT PRIORITY

• COMMUNICATION FAILURE RETRY TIME

• RE-ALARM TIME

• ALARM SYSTEM NAME

Daylight Saving Time Configuration. . . . . . . . . . . . . 43

Capacity Control Overrides . . . . . . . . . . . . . . . . . . . . . 43

Head Pressure Control . . . . . . . . . . . . . . . . . . . . . . . . . . 46

• LOW CONDENSER FLUID TEMPERATURE HEAD PRESSURE CONTROL OPTION

PRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46,47

System Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47-53

Actual Start-Up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Operating Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

• TEMPERATURES

•VOLTAGE

• MINIMUM FLUID LOOP VOLUME

• FLOW RATE REQUIREMENTS

OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54-59

Sequence of Operation. . . . . . . . . . . . . . . . . . . . . . . . . . 54

Dual Chiller Sequence of Operation . . . . . . . . . . . . . 54

•PUMP OPERATION

Operating Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

• THERMISTORS

• TRANSDUCERS

SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59-67

Economizer Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Electronic Expansion Valve (EXV) . . . . . . . . . . . . . . . 59

• MAIN EXV CONTROL

• ECONOMIZER EXV CONTROL

• EXV TROUBLESHOOTING PROCEDURE

Compressor Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . 63

• COMPRESSOR OIL SYSTEM

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Catalog No. 04-53300024-01 Printed in U.S.A. Form 30XW-1T Pg 1 11-09 Replaces: New

CONTENTS (cont)

Cooler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

• SUCTION SERVICE VALVE

• LOW FLUID TEMPERATURE

• LOSS OF FLUID FLOW PROTECTION

• TUBE PLUGGING

•RETUBING

• TIGHTENING COOLER HEAD BOLTS

• INSPECTING/CLEANING HEAT EXHANGERS

• WATER TREATMENT

• CHILLED WATER FLOW SWITCH

Refrigerant Circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

• LEAK TESTING

• REFRIGERANT CHARGE

Safety Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

• COMPRESSOR PROTECTION

• COOLER PROTECTION

Relief Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

• PRESSURE RELIEF VALVES

MAINTENANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

Recommended Maintenance Schedule . . . . . . . . . . 67

TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . 67-85

Alarms and Alerts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

• DIAGNOSTIC ALARM CODES AND POSSIBLE CAUSES

Service Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

APPENDIX A — TOUCH PILOT™

DISPLAY TABLES . . . . . . . . . . . . . . . . . . . . . . . . . . 86-104

APPENDIX B — NAVIGATOR™ DISPLAY

TAB LE S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105-117

APPENDIX C — CCN TABLES . . . . . . . . . . . . . . 118-132

APPENDIX D — 30XW150-400 CPM

DIP SWITCH ADDRESSES. . . . . . . . . . . . . . . . 133,134

APPENDIX E — PIPING AND

INSTRUMENTATION . . . . . . . . . . . . . . . . . . . . . . 135, 136

APPENDIX F — GLOBAL TIME SCHEDULE

CONFIGURATION FOR i-Vu

CONTROLLER . . . . . . . . . . . . . . . . . . . . . . . . . . . 137-139

INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140

START-UP CHECKLIST

FOR 30XW LIQUID CHILLERS . . . . . . . . CL-1 to CL-7

DEVICE AND CSM

SAFETY CONSIDERATIONS

Installing, starting up, and servicing this equipment can be hazardous due to system pressures, electrical components, and equipment location. Only trained, qualified installers and service technicians should install, start up, and service this equipment. When working on this equipment, observe precautions in the literature, on tags, stickers, and labels attached to the equipment, and any other safety precautions that apply. Follow all safety codes. Wear safety glasses and work gloves. Use care in handling, rigging, and setting this equipment, and in handling all electrical components.

WARNING

Electrical shock can cause personal injury and death. Shut off all power to this equipment during installation and service. There may be more than one disconnect switch. Tag all disconnect locations to alert others not to restore power until work is completed.

WARNING

DO NOT VENT refrigerant relief valves within a building. Outlet from relief valves must be vented in accordance with the latest edition of ANSI/ASHRAE (American National Standards Institute/American Society of Heating, Refrigerating and Air Conditioning Engineers) 15 (Safety Code for Mechanical Refrigeration). The accumulation of refrigerant in an enclosed space can displace oxygen and cause asphyxiation. Provide adequate ventilation in enclosed or low overhead areas. Inhalation of high concentrations of vapor is harmful and may cause heart irregularities, unconsciousness or death. Misuse can be fatal. Vapor is heavier than air and reduces the amount of oxygen available for breathing. Product causes eye and skin irritation. Decomposition products are hazardous.

WARNING

DO NOT attempt to unbraze factory joints when servicing this equipment. Compressor oil is flammable and there is no way to detect how much oil may be in any of the refrigerant lines. Cut lines with a tubing cutter as required when performing service. Use a pan to catch any oil that may come out of the lines and as a gage for how much oil to add to system. DO NOT re-use compressor oil.

CAUTION

This unit uses a microprocessor-based electronic control system. Do not use jumpers or other tools to short out components, or to bypass or otherwise depart from recommended procedures. Any short-to-ground of the control board or accompanying wiring may destroy the electronic modules or electrical components.

CAUTION

To prevent potential damage to heat exchanger tubes, always run fluid through heat exchanger when adding or removing refrigerant charge. Use appropriate antifreeze solutions in evaporator and condenser fluid loops to prevent the freezing of heat exchangers or interconnecting piping when the equipment is exposed to temperatures below 32 F (0° C). Proof of flow switch is factory installed on all models. Do NOT remove power from this chiller during winter shut down periods without taking precaution to remove all water from heat exchangers. Failure to properly protect the system from freezing may constitute abuse and may void warranty.

CAUTION

Compressors require specific rotation. Swap any two incoming power leads to correct compressor rotation.

ENTER

ESCAPE

ENTER

ALARM INDICATOR

LIGHT STA RT- STOP BUTTON

LCD TOUCH SCREEN

Fig. 1 — Touch Pilot™ Display

a30-4456 (b&w)

GENERAL

This publication contains controls, operation, start-up, service and troubleshooting information for the 30XW150-400 water-cooled liquid chillers with electronic controls. The 30XW chillers are equipped with ComfortLink™ controls and electronic expansion valves. The AquaForce

30XW chillers offer two different user interface devices, the Touch Pilot™ display and the Navigator ™ display.

Conventions Used in This Manual — The follow-

ing conventions for discussing configuration points for the Navigator module and Touch Pilot display will be used in this manual.

Point names for the Touch Pilot display will be shown in bold. See Appendix A for a complete list of point names. Item names for the Navigator module will be shown in bold italics. See Appendix B for the complete path name preceding the item name. The point and item names in Appendices A and B will be listed in alphabetical order and the path name for each will be written with the mode name first, then any sub-modes, each separated by an arrow symbol ( .

This path name will show the user how to navigate through the Navigator module or the Touch Pilot display to reach the desired configuration. The user would scroll through the modes and submodes using the and keys on the Navigator display. For the Touch Pilot display, the user would simply touch the menu item on the screen. The arrow symbol in the path name represents pressing to move into the next level of the menu structure for the Navigator module, or touching the menu item on the screen for the Touch Pilot display.

When a value is included as part of the point name, it will be shown after the point name after an equals sign. If the value represents a configuration setting, an explanation will be shown in parentheses after the value. The Touch Pilot name will be shown first with the Navigator name following. As an example, (Staged Loading Sequence = 1, LLCS = Circuit A leads).

Press the and keys simultaneously on the Navigator module to display an expanded text description of the point name or value. The expanded description is shown in the Navigator display tables (Appendix B) but will not be shown with the path names in text. The Touch Pilot display will show an expanded description of the point name. To view the expanded point name for the Touch Pilot display go to Appendix A.

The Touch Pilot display configures the unit via the CCN (Carrier Comfort Network

) Tables, which are located in Ap-

pendix C of this manual.

Display Module Usage

TOUCH PILOT DISPLAY — The Touch Pilot display is the standard user interface for the AquaForce 30XW chillers with the ComfortLink control system. The display includes a large LCD (liquid crystal display) touch screen for display and user configuration, a Start/Stop button, and an Alarm Indicator LED (light-emitting diode). See Fig. 1.

The Touch Pilot display can be used to access various Carrier Comfort Network circumstances, contact your Carrier representative.

Operation of the Touch Pilot display is driven from the displays on the touch screen. The Touch Pilot display uses the following screen “buttons” to allow the user to operate the display and navigate within and between screens.

“BACK” returns to the next higher screen in the hierarchy.

devices. For operation under these

“HOME” displays the Default Group Display screen

for Touch Pilot display. The Default Screen is a userconfigured display of up to 9 points on each of 8 screens. This allows for quick access to various, frequently viewed points, without navigating through the Main Menu structure. This button is available at all menu levels and returns the user to the first Default Group Display screen.

“MAIN MENU” displays the Main Menu screen. This

allows access for viewing and configuration, where possible, of all points supported by the controller. This includes points such as set point and operational configuration. This button is available at all menu levels and returns the user to the Main Menu screen.

“PREVIOUS” moves the user to the next earlier

screen in a group of sequential screens of the same type.

“NEXT” advances the user to the next screen in a

group of sequential screens of the same type.

“OK” agrees with, or says “yes” to a prompt and per-

forms the appropriate processing.

“NO” rejects, or says “no” to a prompt and performs

the appropriate processing.

“CANCEL” terminates an ongoing action and returns

to the current screen without any other processing.

“CLEAR DATA” clears the data value in a data entry

dialog box. This button is used to clear incorrect data.

“RESET DATA” zeros the data value in a data entry

dialog box.

“ADD” adds the active point to a Group Display

screen.

“REMOVE” deletes a point from a Group Display

screen.

“INCREASE” modifies the value of a field within its

defined limits or “SCROLL UP” and shifts the screen view up by one item.

“DECREASE” modifies the value of a field within its

defined limits or “SCROLL DOWN” and shifts the screen view down by one item.

“PAGE DOWN” will replace the items currently on

the screen with the next group of items if the current table or list has more data than will fit on the screen.

“PAGE UP” will replace the items currently on the

screen with the previous group of items if the current table or list has more data than will fit on the screen.

“FORCE” begins the process of forcing or overriding

the value of a point.

“AUTO” begins the process of removing a force from

a point.

“MODIFY” begins the process of modifying a config-

uration value.

“ALARM INDICATOR LIGHT” activates when a

Fig. 2 — Group Display Screen

Fig. 3 — Point Data Dialog Box

Fig. 4 — Main Menu Display

a30-4910.ep

a30-4471

a30-4472

PDS-XAXQXWPDS-XAXQXW

new alarm condition occurs. The alarm indicator light

LED, located on the right side of the display, remains activated until it is manually reset using the Reset button on the Main menu.

“START/STOP BUTTON” enables the user to start

or stop the chiller from the Touch Pilot™ display.

See Enable-Off-Remote Contact Switch (SW1) on page 16 for additional information.

Several items are password protected. When required, a Password dialog box will be displayed for field input of the password. The default password is 3333. The password can be changed if desired.

Power-Up Display

— When the Touch Pilot display is powered up, it displays an initialization progress bar and attaches (initiates communication) to the Main Base Board. The Touch Pilot display then shows that controller’s default Group Display screen. See Fig. 2. This is a user-configured display screen with up to 9 points on 8 separate screens. For more information on adding or removing points from the Group Display screen, see the Group Display Screens section on page 7.

Touch any of the screen point buttons and Point Data Dialog box will be displayed with expanded information. In the example shown, the CTRL_PNT button in the bottom left corner was selected. See Fig. 2 and 3.

To exit the box, press . Main Menu Display

— The default screen for the Touch Pilot controller is the Group Display screen. To access the Main Menu, press the button. The screen shown in Fig. 4 will be displayed. Selecting a button will display the screens associated with that category. The user can also access the login screen from the Main Menu if needed.

Touch Pilot Menu Structure

— The user can navigate through the Touch Pilot display screens by selecting the buttons that appear on the screen. When a button is selected, either a submenu or a list of point names and values will be shown. Submenus will display a list of associated point names. See Fig. 5 for the Touch Pilot menu structure.

If the list of point names and values are shown, the top line of the display is the table name. The line and total line counter is displayed in the upper right corner of the display. Selecting an item will cause a Point Data dialog box to appear.

Setup Menu Screen

— The Setup Menu screen, shown in Fig. 6, is accessed by pressing the Setup button from the Main Menu. This configuration allows the user to configure the basic operation and look of the display. Table 1 summarizes the Setup Menu functions.

User interface

Group display x 8 Main menu

Status

GENUNIT

CIRCA_AN

CIRCA_D

CIRCB_AN

CIRCB_D

CIRCC_D

CIRCC_AN

STATEGEN

RECLAIM

MODES

STRTHOUR

FANHOURS

FREECOOL

QCK_TST1

QCK_TST2

SERV_TST

Setpoint Schedule

OCC1PO1S

OCC2PO2S

Service

FACTORY

FACTORY2

SERVICE1

CP_UNABL

UPDTHOUR

UPDHRFAN

MAINTCFG

Maint

LOADFACT

FANCTRL

M_MSTSLV

DEFROSTM

LAST_POR

PR_LIMIT

BOARD_PN

SERMAINT

EXV_CTRL

CUR_PHAS

OCCDEFCFM

Config

Ctrl-ID

DISPCONF

USER

MST_SLV

CFG_TAB1

…

CFG_TAB8

BRODEFS

OCCDEFCS

HOLIDAY

ALARMDEF

Alarms

ALARHIST

ALARHIS2

ALAM_CUR

Reset Time Attach Setup

Regional

Language

Contrast

Backlight

Calibrate

Password

Display

CCN

Fig. 5 — Touch Pilot™ Display Menu Structure

a30-4829

Table 1 — Setup Menu

Fig. 6 — Setup Menu Display

a30-4474

SETUP MENU BUTTON FUNCTION

This button specifies the time and date format and the base unit of measure. Time display can be configured as

REGIONAL

LANGUAGE

CONTRAST

BACKLIGHT This button specifies whether backlighting should be kept on at all times or turned off during inactive periods.

CALIBRATE

PASSWORDS

DISPLAY

CCN This button is used to configure the bus and element numbers and the baud rate of the control on the network.

12-hour AM/PM setting or as a 24-hour setting. The date can be formatted in one of 3 settings, MM-DD-YYYY (MonthDay-Year), DD-MM-YYYY (Day-Month-Year), or YYYY-MM-DD (Year-Month-Day). Units of measure can be either US (English) or Metric (SI).

This button selects the active language and font of the display. Available languages are English and Spanish (Espanol). If a preferred language is not available, additional software for the Main Base Board (MBB) and the Touch Pilot™ display are required. Contact your Carrier representative for instructions and software.

This button adjusts the LCD contrast. Press and hold the [MOON] button to increase/darken the contrast or the [STAR] button to decrease/lighten the current contrast. NOTE: Touching the screen anywhere for 5 seconds while powering-up will prompt the user to restore contrast and calibration settings to factory defaults.

This button is used to adjust the LCD touch screen calibration. Touch the screen in the circular targets located first in the upper left and then in the lower right corner of the screen to adjust.

This button is used to configure the limited and full logged-in access system passwords. In order to change passwords, the user must be logged in with full access to view and change the passwords. All passwords must consist of 4-digits, which can be entered using the numeric keypad. Access levels and associated privileges are as follows:

Limited Logged-in Access - Provides the user with read/write access to all available tables (except service configuration tables, where the user will not be permitted to modify point data, and Group Display tables, where the user will not be permitted to add points.) This access level also provides read/write access to all Touch Pilot display setup properties except Display, CCN, and Password.

Full Logged-in Access - Provides user with read/write access to all available tables for the attached device and all Touch Pilot display properties.

If the user does not log in, read-only access to all tables is allowed. The user will be prompted to log in when attempting to access password-required functions.

This button is used to view the description data and part number from the Ctlr-ID Table and to specify the Operating Mode. The Operating mode can be configured for Equipment mode or Network mode. For Touch Pilot displays that are standard with the unit, Operating mode should not be changed from Equipment mode. Equipment mode provides access only to the chiller’s MBB via the Local Equipment Network (LEN) Bus. For remote access, a remote Touch Pilot display can be set to Network mode. Network mode provides access to all devices on the CCN (Carrier Comfort Net-

work

) bus.

NOTE: When changing the operating mode, a power cycle is required in order for the new operating mode to take effect. The user should view and correct the following CCN data: address and baud rate, alarm acknowledger, and broadcast acknowledger designation.

Setting the Time and Date

ENTER

ESCAPE

ENTER

ESCAPE

ENTER

ESCAPE

ENTER

ESCAPE

ENTER

— The ComfortLink™ control has a time and date function. This can be useful for diagnostics to determine when alarms occur. The control is factory configured for the proper date and is set for the Eastern Time Zone. The date and time zone must be checked and corrected if necessary, to allow the machine to function on an internal time schedule and to display a proper time and date stamp for alarms. The time and date is displayed on the Group Display Screen.

To change the Time and Date, press the Main Menu

button. Select Time. On the display, a day and date box

with a time box will be shown. To change the day and date,

press the day and date box. A calendar will be displayed. If the

correct month is displayed, touch the correct date. If the wrong

month is displayed, use the or to change to the correct

month and select the correct date. The date will highlighted.

Press to accept the change. The previous screen will be

displayed with the corrected day and date shown. To correct

the time, use the or on the left to change the hour. Use

the or on the left to change the minutes. Continuously

touching the or will sequence the numbers. The time is

shown in a 24-hour format. To accept the changes, press the

or buttons. A “Save” dialog box is displayed with the

words, “Do you wish to save changes?” Press to accept

the changes.

Group Display Screens

— The Touch Pilot™ display supports up to eight Group Display screens. Group Display screens show status information along the top of the screens and 9 buttons that display 9 point names and point values that are chosen by the user. All Group Display screen points are user configurable. The bottom line of the screen contains navigation buttons that can be used to move between the Group Display screens.

Pressing a point button will show that point’s Point Data dialog box. See Fig. 2 and 3. This box contains buttons that remove the point from the group display and apply or remove a force (point override). When touching any button in the display screen, the button will be outlined to acknowledge input. There may be a delay in response to input, but if the button is outlined, do NOT press any other button until the previous input has been processed.

If there is a communication failure with the MBB (Main Base Board), all point buttons will be displayed in inverse video and the message Communication Failure will be displayed in the top left line of the screen.

Default Group Designation — The default group is the first of the 8 Group Display screens. This is the default screen of the display. Information on this screen as well as the other 7 screens can be user-modified to meet the needs of the site.

To Add A Point To A Group Display — From the Main Menu, press the desired menu button (Status, Setpoint, Service, Maint, or Config) and, if necessary, the sub-menu button to access the point to be added. Press the point button to show the source point’s Point Data dialog box. See Fig. 3. From the Point Data dialog box, press the ADD button. The display will show the last Group Display accessed. Use the navigation buttons to access the destination Group Display. Press an existing point button or a blank button to update the highlighted button with the source point’s name. Press to add the highlighted point to the group and return to the table display.

To Remove A Point From A Group Display — From the Point Data Dialog box, press the REMOVE button and follow the prompts. The display will return to the Group Display screen from which the point was removed, and the button corresponding to the deleted point will be blank and disabled.

NAVIGATOR™ DISPLAY MODULE — The Navigator display module provides a mobile user interface to the ComfortLink control system. The display has up and down arrow keys, an key, and an key. These keys are used to navigate through the different levels of the display structure. Press the key until ‘Select a Menu Item’ is displayed. Use the up and down arrow keys to move through the top 11 mode levels indicated by LEDs on the left side of the display. See Fig. 7. See Table 2 and Appendix B for more details about the display menu structure.

Once within a mode or sub-mode, a “>” indicates the

currently selected item on the display screen. Pressing the

and keys simultaneously will put the Navigator module into expanded text mode where the full meaning of all sub-modes, items, and their values can be displayed. Pressing the and keys when the display says ‘Select Menu Item’ (Mode LED level) will return the Navigator module to its default menu of rotating display items (those items in Run StatusVIEW). In addition, the password will be disabled, requiring that it be entered again before changes can be made to password protected items. Press the key to exit out of the expanded text mode.

When a specific item is located, the item name appears on the left of the display, the value will appear near the middle of the display and the units (if any) will appear on the far right of the display. Press the key at a changeable item and the value will begin to flash. Use the up and down arrow keys to change the value, and confirm the value by pressing the

key.

Changing item values or testing outputs is accomplished in the same manner. Locate and display the desired item. Press

so that the item value flashes. Use the arrow keys to change the value or state and press the key to accept it. Press the key to return to the next higher level of structure. Repeat the process as required for other items.

Items in the Configuration and Service Test modes are password protected. The words Enter Password will be displayed when required, with 1111 also being displayed. The default password is 0111. Use the arrow keys to change each number and press to accept the digit. Continue with the remaining digits of the password. The password can only be changed through CCN operator interface software such as ComfortWORKS

Power-Up Display

, ComfortVIEW™ and Service Tool.

— When the Navigator display is powered

up it will display:

ComfortLink

Navigator

Carrier

This indicates an initialization period while the Navigator™

ENTER

ESCAPE

ENTER

Run Status

Service Test

Temperatures

Pressures

Setpoints

Inputs

Outputs

Configuration

Time Clock

Operating Modes

Alarms

ENTER

ESC

MODE

Alarm Status

Comfort

Link

Fig. 7 — Navigator Display Module

a30-3924

display initiates communication with the Main Base Board. Once communication is established, the default rotating display will be shown. If communication is not established, the Navigator module will display:

Communication

Failure

If the Navigator module is connected to a Main Base Board without software loaded, the display will remain at the powered-up initialization display.

Setting the Time and Date

— The ComfortLink control has a time and date function. This can be useful for diagnostics to determine when alarms occur. The control is factory configured for the proper date and for use in the Eastern Time Zone. The control must be checked and corrected if necessary. The correct time is important if the machine is to function on an internal time schedule and display a proper time and date stamp for alarms. The time and date will be displayed on the default rotating display of the Navigator module. The time and date can also be checked and changed under the Time Clock mode as described below.

ITEM ITEM EXPANSION PATH VALUE

HH.MM Time of Day Time Clock TIME XX.XX

To change the time, press the arrow key to move to the correct hour and press . The minutes can be changed in a similar manner.

To check or change the date, the following items must be checked and changed if necessary.

ITEM ITEM EXPANSION PATH VALUE MNTH Month of Year Time Clock DATE WW DOM Day of Month Time Clock DATE XX DAY Day of Week Time Clock DATE YY YEAR Year of Century Time Clock DATE ZZ

NOTE: WW is the current month of the controller, (01=January,

02=February, etc.). XX is the current day of the month YY is the day of the week, (01=Monday, 02-Tuesday, etc.) ZZ is the year of the century, (06=2006, 07=2007)

Changing the Unit of Measure — The Navigator display has two options for unit of measure on the display, English or SI (metric). The factory default for the units of measure is English. To change the unit of measure, the following item must be changed.

Adjusting the Contrast

— The contrast of the display can be adjusted to suit ambient conditions. To adjust the contrast, enter the LED Test mode of the device.

ITEM ITEM EXPANSION PATH VALUE

TEST Test Display LEDs Configuration DISP

Pressing will access the TEST point. Pressing

again will cause the “OFF” to flash. Use the up or down arrow to change “OFF” to “ON.” Pressing will illuminate all LEDs and display all pixels in the view screen. Pressing and simultaneously allows the user to adjust the display contrast. The display will read:

Adjust Contrast

- - - -+ - - - - - - - - - - - - - - Use the up or down arrows to adjust the contrast. The

screen’s contrast will change with the adjustment. Press

to accept the change. The Navigator module will keep this setting as long as it is plugged in to the LEN (Local Equipment Network) bus.

Adjusting the Backlight Brightness

— The backlight of the display can be adjusted to suit ambient conditions. The factory default is set to the highest level. To adjust the backlight of the Navigator module, enter the LED Test mode of the device.

ITEM ITEM EXPANSION PATH VALUE TEST Test Display LED’s Configuration Mode DISP

Pressing will access the TEST point. Pressing

again will cause the “OFF” to flash. Use the up or down arrow to change “OFF” to “ON.” Pressing will illuminate all LEDs and display all pixels in the view screen. Pressing the up and down arrow keys simultaneously allows the user to adjust the display brightness. The display will read:

Adjust Brightness

- - - - - - - - - - - - - - - - - +

Use the up or down arrow keys to adjust screen brightness. Press to accept the change. The Navigator module will keep this setting as long as it is plugged in to the LEN bus.

ITEM ITEM EXPANSION PATH VALUE

METR Metric Display Configuration DISP

Changing the Display Language

— The Navigator display

OFF – English ON – SI (Metric)

has five language options to select from, English, Espanol, Francais, Portugues, and Translated. The “Translated” option is not supported at this time. The factory default language is English. To change the display language, the following item must be changed.

ITEM ITEM EXPANSION PATH VALUE

LANG Language Selection Configuration DISP

NOTE: When the Language Selection (Configuration

English Espanol Francais Portugues Translated

DISP LANG) variable is changed, all appropriate display expansions will immediately change to the new language. The four letter/digit code will not change. No power-off or control reset is required when reconfiguring languages.

RUN

221

195

CH1 CH2 CH3

CH4

CH11 CH12

LOCATION OF SERIAL NUMBER

CH13

CH14

CH 15A

ANALOG

INPUTS

J2C

J2B

24 VAC

J1A

+ G –

DISCRETE

INPUTS

J5A

15a

C16

J2A

TR1 TR2 TR3 TR4 TR5

CH19 CH20 CH21 CH22 CH23 CH24 CH25 CH26

CH17

CH18

J5B

J5C

THERMISERS PRESSURES

CH5

CH6 CH7 CH8

CH9

J7A J7B

J7C

J7D

RELAY

OUTPUTS

MOV1

C41

C42 C43

C32

C33

C34

C35

12/11

J10

LEN

+ G -

STATUS

J9A

D15

CCN

CH10

+ G –

SIO

(LEN)

J9C

J9B

+ G –

LEN

CCN J13 J9D

+C+CCH

16a+CCH16b

Fig. 8 — Main Base Board

a30-4255

STATUS

Auto Display

(VIEW)

Machine

Starts/Hours

(RUN)

Compressor

Run Hours

(HOUR)

Compressor

Starts

(STRT)

Fan Run

Hours

(FAN)

Compressor

Disable

(CP.UN)

Predictive

Maintenance

(MAIN)

Software Versions

(VERS)

SERVICE

TEST

Manual

Test Mode

(TEST)

Quick

Test Mode

(QUIC)

Table 2 — ComfortLink™ Navigator™ Display Menu Structure

MODE

TEMPERATURES PRESSURES

Unit

Temperatures

(UNIT)

Circuit A

Temperatures

(CIR.A)

Circuit B

Temperatures

(CIR.B)

Circuit C

Temperatures

(CIR.C)

Circuit A

Pressures

(PRC.A) Circuit B

Pressures

(PRC.B) Circuit C

Pressures

(PRC.C)

SET

POINTS

Cooling

Setpoints

(COOL) Heating

Setpoints

(HEAT)

Misc.

Setpoints

(MISC)

INPUTS OUTPUTS CONFIGURATION

General

Inputs

(GEN.I)

Circuit A

Outputs (CIR.A)

Circuit B

Outputs (CIR.B)

Circuit C

Outputs (CIR.C)

General Outputs

(GEN.O)

Display

Configuration

(DISP)

Unit

Configuration

(UNIT)

Service

Configurations

(SERV) Options

Configuration

(OPTN)

Reset,

Demand Limit,

Master/Slave

(RSET)

TIME

CLOCK

Time of Day

(TIME)

Day, Date

(DATE)

Schedule 1

(SCH1)

Schedule 2

(SCH2)

Holidays

(HOLI)

Service

Maintenance

Configuration

(MCFG)

OPERATING

MODES

Operating

Control Type

(SLCT)

Operating

Modes

(MODE)

ALARMS

Reset Current

Alarms

(R.ALM)

Current Alarms

(ALRM)

Alarm

History

(H.ALM)

CONTROLS

General —

the ComfortLink™ electronic control system that controls and monitors all operations of the chiller. The control system is composed of several components as listed in the following sections. All machines have a Main Base Board (MBB), Touch Pilot™ module or Navigator™ device, electronic expansion valve board (EXV), auxiliary board, Compressor Protection board, Emergency On/Off switch, and an Enable-Off-Remote Contact switch.

The 30XW water-cooled liquid chillers contain

Main Base Board (MBB) — The MBB is the core of

the ComfortLink control system. It contains the major portion

machine. See Fig. 8. The MBB continuously monitors input/ output channel information received from its inputs and from all other modules. The MBB receives inputs from status and feedback switches, pressure transducers and thermistors. The MBB also controls several outputs. Some inputs and outputs that control the chiller are located on other boards, but are transmitted to or from the MBB via the internal communications bus. Information is transmitted between modules via a 3-wire communication bus or LEN (Local Equipment Network). The CCN (Carrier Comfort Network

) bus is also supported. Connections to both LEN and CCN buses are made at TB3. For a complete description of Main Base Board inputs and outputs and their channel identifications, see Table 3.

of operating software and controls the operation of the

Table 3 — Main Base Board Inputs and Outputs

DESCRIPTION INPUT/OUTPUT I/O TYPE DISPLAY MODULE POINT NAME

Power (24 vac supply) —— —

Local Equipment Network —— —

Carrier Communication

Network

Chilled Water Flow Switch CWFS Switch Cooler Flow Switch, LOCK

Demand Limit Switch No. 1 Demand Limit SW1 Switch Limit Switch 1 Status, DLS1 MBB-J4-CH13

Condenser Flow Switch CDFS Switch Condenser Flow Switch, COND 16A MBB-J5A-CH16A

Circuit A Discharge

Pressure Transducer

Circuit B Discharge

Pressure Transducer

Dual Chiller

LWT Thermistor

Dual Set Point Input Dual Set Point Switch Remote Setpoint Switch, DUAL MBB-J4-CH12

Heat/Cool Switch HC_SW Switch Heat/Cool Select Contact, HC_SW

Entering Water Thermistor EWT 5k Thermistor Cooler Entering Fluid, EWT MBB-J6-CH2

Leaving Water Thermistor LWT 5k Thermistor Cooler Leaving Fluid, LW T MBB-J6-CH1

Condenser Entering Water

Thermistor

Condenser Leaving Water

Thermistor

External Chilled

Water Pump Interlock

Circuit A Suction

Pressure Transducer

Circuit B Suction

Pressure Transducer

Unit Status Remote Contact-Off-Enable Switch On/Off Remote Switch, ONOF MBB-J4-CH11

Alarm Relay ALM R Relay Alarm Relay Output, ALRM MBB-J3-CH24

Alert Relay ALT R Relay Alert Relay Output, ALRT MBB-J3-CH25 Cooler Pump Relay 1 PMP1 Contactor Cooler Pump 1, CPUMP_1 MBB-J2A-CH19 Cooler Pump Relay 2 PMP2 Contactor Cooler Pump 2, CPUMP_2 MBB-J2A-CH20

Condenser Pump Relay CPMP Contactor Condenser Pump, COND_PMP MBB-J2C-CH22

Pump #1 Interlock Pump #2 Interlock

LEGEND

I/O — Input or Output LWT — Leaving Water Temperature

—— —

DPTA Pressure Transducer Discharge Pressure, DP.A

DPTB Pressure Transducer Discharge Pressure, DP.B

DUAL 5k Thermistor CHWS Temperature, CHWS MBB-J6-CH3

CEWT 5k Thermistor Condenser Entering Fluid, CEWT MBB-J6-CH5

CLWT 5k Thermistor Condenser Leaving Fluid, CLWT MBB-J6-CH4

PMPI Switch Electrical Box Interlock, ELEC MBB-J4-CH15A

SPTA Pressure Transducer Suction Pressure, SP.A

SPTB Pressure Transducer Suction Pressure, SP.B

PMP_1 PMP_2

Switch Cooler Pump Run Status, PUMP MBB-J5C-CH18

CONNECTION POINT

Pin Notation

MBB-J1, MBB-J1A,

MBB-J1B 11 24 vac 12 Ground

MBB-J9A, MBB-J9B,

MBB-J9C, MBBJ9D

+ RS485 Port (D+)

G RS485 Port (Gnd)

- RS485 Port (D-) MBB-J12

+ RS485 Port (D+)

G RS485 Port (Gnd)

- RS485 Port (D-)

MBB-J5B-CH17

MBB-J7A-CH6

5V +5 vdc Ref.

SSignal R Return

MBB-J7C-CH8

5V +5 vdc Ref.

SSignal R Return

MBB-J4-CH14

MBB-J7B-CH7

5V +5 vdc Ref.

SSignal R Return

MBB-J7D-CH9

5V +5 vdc Ref.

SSignal R Return

Compressor Protection Module (CPM) — There

is one CPM per compressor. See Fig. 9. The device controls the compressor contactors, oil solenoid, and loading/unloading the solenoid. The CPM also monitors the compressor motor temperature, high pressure switch, oil level switch, discharge gas temperature, oil pressure transducer, motor current, MTA (must trip amps) setting and economizer pressure transducer (sizes 175,200,350,400 only). The CPM responds to commands from the MBB (Main Base Board) and sends the MBB the results of the channels it monitors via the LEN (Local

Equipment Network). The CPM has three DIP switch input banks, Switch 1 (S1), Switch 2 (S2), and Switch 3 (S3). The CPM board DIP switch (S1) configures the board for the type of starter, the location and type of the current transformers and contactor failure instructions. See Table 4 for description of DIP switch 1 (S1) inputs. See Appendix D for DIP switch settings.

DIP

Fig. 9 — Compressor Protection Module

a30-4215

SWITCH 2

(S2)

DIP

SWITCH 3

(S3)

SMT

CT1

CT2

CT3

102

J10B

CH04

PRESS OIL

100K

J10A

CH03

PRESS

ECO

TMP

CH02

R20

102

123 4

MOT

CH01

J11

AUX

151

102

123 45678

151

102

MTA

13CH14

151

151 151 151

151

102

151

LOADERS OLS MOTOR COOLING

151

561

24 VDC/OLL

HPS

561

620

101

LOCATION OF SERIAL NUMBER

151

100 K

101

SIO

(LEN)

SI0 STATU S

(LEN)

STAT US

SWITCH 1

– G +

3 2 1

DIP

(S1)

J12

– G +

3 2 1

Table 4 — DIP Switch 1 (S1) Inputs

DIP SWITCH POSITION FUNCTION SETTING MEANING

2, 3

4, 5, 6

8 Not Used — —

The CPM board DIP switch S2 setting determines the must trip amps (MTA) setting. See Appendix D for DIP switch settings. The MTA setting which is calculated using the settings S2 must match the MTA setting in the software or an MTA alarm will be generated.

Starter Configuration OFF Across-the-line Start

ON Wye-Delta Start

Current Transformer (CT) Position OFF (2), OFF (3) CT is located in the main line

ON (2), OFF (3) CT is located in the Delta of the motor OFF (2), ON (3) Reserved for future use ON (2), ON (3) Invalid; will cause MTA configuration alarm

Current Transformer (CT) Selection OFF (4), OFF (5), OFF (6) 100A/1V CT1

ON (4), OFF (5), OFF (6) 100A/0.503V CT2 OFF (4), ON (5), OFF (6) 100A/0.16V CT3 ON (4), ON (5), OFF (6) Invalid; will cause MTA configuration alarm OFF (4), OFF (5), ON (6) Invalid; will cause MTA configuration alarm ON (4), OFF (5), ON (6) Invalid; will cause MTA configuration alarm OFF (4), ON (5), ON (6) Invalid; will cause MTA configuration alarm ON (4), ON (5), ON (6) Invalid; will cause MTA configuration alarm

Contactor Failure Action OFF All units should be off

ON Used when Shunt Trip is available in the unit

See below for CPM board DIP switch S3 address informa-

tion. See Table 5 for CPM inputs and outputs.

CPM-A DIP Switch 3 1 2 3 4

Address: OFF OFF OFF OFF

CPM-B DIP Switch 3 1 2 3 4

Address: OFF OFF ON OFF

Table 5 — Compressor Protection Module Inputs and Outputs*

DESCRIPTION INPUT/OUTPUT I/O TYPE DISPLAY MODULE POINT NAME

Power (24 vac supply) —— —

Local Equipment Network —— —

Circuit X High Pressure Switch HPS-X Switch Not available

Oil Level Switch Oil LS X Switch Circuit X Oil Solenoid, OLS.X

Must Trip Amps† MTA (S2) 8-Pin DIP Switch Must Trip Amps, MTA.X

Configuration Switch† S1 8-Pin DIP Switch S1 Config Switch, C.SW.X

Compressor X Motor Temperature MTR-X NTC Thermistor Motor Temperature, CTP.X

Compressor X Discharge Gas Temperature DGT X NTC Thermistor Discharge Gas Temp, DGT.X

Oil Pressure Transducer OPT X Pressure Transducer Oil Pressure, OP.X

Economizer Pressure Transducer

(sizes 175,200,350,400 only)

Compressor Current X Phase A Current Sensor CUR.A

Compressor Current X Phase B Current Sensor CUR.B

Compressor Current X Phase C Current Sensor CUR.C

Compressor X 1M Contactor C X 1M Contactor Compressor Output, CP.X

Compressor X 2M Contactor C X 2M Contactor Not available

Compressor X S Contactor C X S Contactor Not available

Oil Solenoid X Oil solenoid-X Solenoid Oil Solenoid Output, OLS.X

Load Solenoid X Loading Solenoid-X Solenoid Slide Valve 1 Output, SL1.X

Unload Solenoid X Unloading Solenoid-X Solenoid Slide Valve 2 Output, SL2.X

*“X” denotes the circuit, A or B.

†See Appendix D for MTA settings.

EPT X Pressure Transducer Economizer Pressure, ECP.X

CONNECTION POINT

Pin Notation

CPM-X-J1 11 24 vac 12 Ground

CPM-X-JP12 1 RS485 Port (D+) 2 RS485 Port (Gnd) 3 RS485 Port (D-)

CPM-X-J12 1 RS485 Port (D+) 2 RS485 Port (Gnd) 3 RS485 Port (D-)

CPM-X-J7-CH05

CPM-X-J6-CH06

CPM-X-J9-CH01

CPM-X-J9-CH02

CPM-X-J10B-CH04

5V + 5 vdc ref

S Signal

RReturn

CPM-X-J10A

5V + 5 vdc ref

S Signal

RReturn

CPM-X-J8-CH01

CPM-X-J8-CH02

CPM-X-J8-CH3

CPM-X-J1-CH07 1 2

CPM-X-J2-CH8 1 2

CPM-X-J2-CH9 1 2

CPM-X-J2-CH12 1 2

CPM-X-J2-CH13 1

CPM-X-J2-CH14 1 2

100

257-01

712

100K

100

J2A EXVA

J2B EXVB

24VAC

STATUS

MOV1

LOCATION OF SERIAL NUMBER

432 1

THA THB

C15

C16

Q2 Q1

12/11

C17

Q45

Q42Q37

Q35

Q25

Q27

Q30

Q20

Q22

Q17

Q15

Q12

Q10

C10

C11

C37C39

D15

C25

C49

R3 L3

TEMP

D29

D9 D8

SI0 (LEN)

COMM J4

DIP SWITCH

Fig. 10 — EXV Board

a30-4216

Electronic Expansion Valve (EXV) Board —

The 30XW150-325 units have one EXV board. The 30XW350,400 units have one EXV board per circuit. See Fig. 10. The board is responsible for monitoring the suction gas temperature and economizer gas temperature thermistors. The board also signals the main EXV and economizer EXV (ECEXV) motors to open or close. The electronic expansion valve board responds to commands from the MBB and sends the MBB the results of the channels it monitors via the LEN (Local Equipment Network). See below for DIP switch information. See Tables 6 and 7 for EXV inputs and outputs.

EXV BOARD 1

(150-400)

123456 7 8

DIP SWITCH

Address: ON ON ON ON ON ON OFF ON

EXV BOARD 2

(350,400)

DIP SWITCH

1 23456 7 8

Address: OFF ON ON ON ON ON OFF ON

Table 6 — EXV1 Board Inputs and Outputs (30XW150-325)

DESCRIPTION INPUT/OUTPUT I/O TYPE DISPLAY MODULE POINT NAME

Power (24 vac supply) —— —

Local Equipment Network —— —

Circuit A Suction Gas Thermistor SGTA 5k Thermistor Compressor Suction Temp, SGT.A

Circuit B Suction Gas Thermistor SGTB 5k Thermistor Compressor Suction Temp, SGT.B

Circuit A EXV EXV-A Stepper Motor EXV Position, EXV.A

Circuit B EXV

(size 325 only)

EXV-B Stepper Motor EXV Position, EXV.B

CONNECTION POINT

Pin Notation

EXVA-J1 11 24 vac 12 Ground

EXVA-J4

1 RS485 Port (D+) 2 RS485 Port (Gnd) 3 RS485 Port (D–)

EXVA-J3

EXVA-J2A 1 2 3 4

EXVA-J2B 1 2 3 4

Table 7 — EXV1,2 Board Inputs and Outputs* (30XW350,400)

DESCRIPTION INPUT/OUTPUT I/O TYPE

Power (24 vac supply) —— —

Local Equipment Network ——

Circuit X Suction Gas Thermistor SGT X 5k Thermistor Compressor Suction Temp, SGT.X

Circuit X Economizer Gas Thermistor ECT X 5k Thermistor Economizer Gas Temp, ECT.X

Circuit X EXV EXV-X Stepper Motor EXV Position, EXV.X

Circuit X Economizer EXV ECEXV-X Stepper Motor Cir X Economizer EXV Pos, ECO.X

*“X” denotes the circuit: 1 = Circuit A; 2 = Circuit B.

DISPLAY MODULE POINT NAME

—

CONNECTION POINT

Pin Notation

EXVX-J1 11 24 vac 12 Ground

EXVX-J4

1 RS485 Port (D+) 2 RS485 Port (Gnd) 3 RS485 Port (D–)

EXVX-J3 TH

EXVX-J2A 1 2 3 4

MLV/Condenser Board — One auxiliary board is op-

100K

CH1

CH2 CH3

CH4 CH5 CH6 CH7 CH8

TR1 TR2 TR3 TR4 TR5 TR6 TR7 TR8

STAT US SIO (LEN)

LOCATION OF SERIAL NUMBER

24 VAC

CH13 CH14

CH9

CH10

CH11

CH12

JP2

C61

CH13

D12

JP1

U21

Q10

Q11

U10

Q12

Q60

3 2 1

– G +

3 2 1

– G +

DIP SWITCH

Fig. 11 — Auxiliary Board with Optional Minimum Load Control or Head Pressure Control

a30-4046

tionally installed in each unit. See Fig. 11. The auxiliary board contains an analog output for head pressure control and discrete outputs for minimum load control. The auxiliary board responds to commands from the MBB and sends the MBB the results of the channels it monitors via the Local Equipment

Network (LEN). See below for auxiliary board A, B and C DIP switch addresses. See Table 8 for inputs and outputs.

AUX BOARD DIP SWITCH

Address: OFF ON OFF OFF ON OFF ON OFF

123 45678

Table 8 — Auxiliary Board Outputs

DESCRIPTION INPUT/OUTPUT I/O TYPE DISPLAY MODULE POINT NAME

Power (24 vac supply) —— —

Local Equipment Network —— —

Condenser Head Pressure Control

Speed Signal

Minimum Load Valve A MLV-A Solenoid Minimum Load Valve Circuit A, MLV.A AUX-J2-CH3 Minimum Load Valve B MLV-B Solenoid Minimum Load Valve Circuit B, MLV.B AUX-J2-CH4

HD_A 0-10 VDC Head Press Actuator Pos, SPD.A

CONNECTION POINT

Pin Notation

AUX-J 1 11 24 vac 12 Ground

AUX-J 9

+ RS485 Port (D+) G RS485 Port (Gnd)

-RS485 Port (D-) + RS485 Port (D+) G RS485 Port (Gnd)

-RS485 Port (D-)

AUX-C H9

+ Signal

- Ground

Enable-Off-Remote Contact Switch (SW1) —

Fig. 12 — Energy Management Module

221

100K

CH 17

CH 16

CH 18

CH 19

CH 20

CH 22

CH 21

CH 23

24 VAC

12 11

11b

CH 5

CH 6

CH 7

SIO LEN

+ G -

SIO LEN

J7B

J7A

J4J3J2B

J2A

J9A

J9B

a30-4911

This switch is installed in all units and provides the owner and service person with a local means of enabling or disabling the machine. It is a 3-position switch and it is used to control the chiller. When switched to the Enable position, the chiller will be under its own control. When switched to the Off position, the chiller will shut down. When switched to the Remote Contact position, a field-installed dry contact can be used to start the chiller. The contacts must be capable of handling a 24-vac, 50-mA load. In the Enable and Remote Contact (dry contacts closed) positions, the chiller is allowed to operate and respond to the scheduling configuration, CCN configuration, and set point data.

For units with a Touch Pilot™ display, the position of the Enable/Off/Remote contact switch is ignored except when the Remote Mode operating type is selected. Refer to the Machine Control Methods section on page 20 for more details.

Emergency On/Off Switch (SW2) — This switch is

installed in all units. The Emergency On/Off switch should only be used when it is required to shut the chiller off immediately. Power to all modules is interrupted when this switch is off and all outputs from these modules will be turned off.

Energy Management Module (EMM) — The EMM

is available as a factory-installed option or as a field-installed accessory. See Fig. 12. The EMM receives 4 to 20 mA inputs for the temperature reset, cooling set point and demand limit functions. The EMM also receives the switch inputs for the field-installed second stage 2-step demand limit and ice done functions. The EMM communicates the status of all inputs with the MBB, and the MBB adjusts the control point, capacity limit, and other functions according to the inputs received. See Table 9.

CAUTION

Care should be taken when interfacing with other manufacturer’s control systems due to possible power supply differences, full wave bridge versus half wave rectification, which could lead to equipment damage. The two different power supplies cannot be mixed. ComfortLink™ controls use half wave rectification. A signal isolation device should be utilized if incorporating a full wave bridge rectifier signal generating device is used.

Table 9 — Energy Management Module (EMM) Inputs and Outputs

Fig. 13 — Touch Pilot™ Display Wiring

INPUT/OUTPUT DESCRIPTION I/O TYPE DISPLAY MODULE POINT NAME CONNECTION POINT 4-20 mA Demand Limit 4-20 mA Demand Limit 4-20 mA* Limit 4-20 mA Signal, DMD EMM-J7B-CH6 4-20 mA Temperature

Reset/Cooling Setpoint Demand Limit SW2 Demand Limit Step 2 Switch Input Switch Limit Setpoint 2, DLS2 EMM-J4-CH9 Ice Done Ice Done Switch Switch Input Ice Done Storage Switch, ICE.D EMM-J4-CH11A Occupancy Override Occupied Schedule Override Switch Input Occupied Override Switch, OCCS EMM-J4-CH8 Remote Lockout Switch Chiller Lockout Switch Input Remote Interlock Switch, RLOC EMM-J4-CH10 SPT Space Temperature Thermistor 10k Thermistor Optional Space Temp, SPT EMM-J6-CH2 % Total Capacity Percent Total Capacity Output 0-10 vdc Chiller Capacity Signal, CATO EMM-J8-CH7 RUN R Run Relay Relay Running Status, RUN EMM-J3-CH25 SHD R Shutdown Relay Relay Shutdown Indicator State, SHUT EMM-J3-CH24 CA_S Run Status for Circuit A Relay Compressor A Run Status, Q_RUN_A EMM-J2A-CH17 CB_S Run Status for Circuit B Relay Compressor B Run Status, Q_RUN_B EMM-J2A-CH18

* A field-supplied 1/2 watt 250 ohm resistor is required across terminals TB6-1,2 (CH6) and/or TB6-3, 4 (CH5).

Local Equipment Network — Information is trans-

mitted between modules via a 3-wire communication bus or LEN (Local Equipment Network). External connection to the LEN bus is made at TB3.

Board Addresses — All boards (except the Main Base

Board and Energy Management Module Board) have 8-position DIP switches.

Touch Pilot™ Display — The Touch Pilot display port

connections are shown in Table 10. Wiring is shown in Fig. 13.

Control Module Communication

RED LED — Proper operation of the control boards can be visually checked by looking at the red status LEDs (lightemitting diodes). When operating correctly, the red status LEDs will blink in unison at a rate of once every 2 seconds. If the red LEDs are not blinking in unison, verify that correct power is being supplied to all modules. Be sure that the Main Base Board (MBB) is supplied with the current software. If necessary, reload current software. If the problem still persists, replace the MBB. A red LED that is lit continuously or blinking at a rate of once per second or faster indicates that the board should be replaced.

GREEN LED — All boards have a green LEN (SIO) LED which should be blinking whenever power is on. If the LEDs are not blinking as described check LEN connections for

4-20 mA Temperature Reset/ Cooling Set point

4-20 mA*

Reset/Setpnt 4-20 mA Signal, RSET

EMM-J7A-CH5

potential communication errors at the board connectors. See input/output Tables 3-10 for LEN connector designations. A 3-wire bus accomplishes communication between modules. These 3 wires run in parallel from module to module. The J9A connector on the MBB provides communication directly to the Navigator™ display module.

YELLOW LED — The MBB has one yellow LED. The Carrier Comfort Network

(CCN) LED will blink during times

of network communication.

Table 10 — Touch Pilot™ Display Port

Connections

CONNECTOR PIN FUNCTION

124VAC +

J1 (Power)

J2 (COM1)

J3 (RJ11)

224VAC 3 Earth Ground 1 RS485 Port (D+) 2 RS485 Port (GND) 3 RS485 Port (D-) 124VAC (+) 2 RS485 Port (D+) 3 RS485 Port (GND) 4 Unused (no connect) 5 RS485 Port (D-) 624VAC(-)

Carrier Comfort Network® (CCN) Interface —

Fig. 14 — ComfortLink™ CCN Communication Wiring

(+) (COM) (-) SHIELD

CCN

RED

WHT

BLK

CCNLEN

(+) (COM) (-) SHIELD

CCN

RED

WHT

BLK

CCNLEN

TO NEXT DEVICE

(+) (COM) (-) SHIELD

CCN

RED

WHT

BLK

CCN

LEN

SHIELD

LEGEND

CCN — Carrier Comfort Network

LEN — Local Equipment Network

a30-4706

All 30XW units can be connected to a CCN system, if desired. The communication bus wiring is a shielded, 3-conductor cable with drain wire and is field supplied and installed. The system elements are connected to the communication bus in a daisy chain arrangement. The positive pin of each system element communication connector must be wired to the positive pins of the system elements on either side of it. The negative and signal ground pins of each system element must also be wired in the same manner. Wiring connections for CCN should be made at TB3. Consult the CCN Contractor’s Manual for further information. See Fig. 14.

NOTE: Conductors and drain wire must be 20 AWG (American Wire Gage) minimum stranded, tinned copper. Individual conductors must be insulated with PVC, PVC/nylon, vinyl, Teflon, or polyethylene. An aluminum/polyester 100% foil shield and an outer jacket of PVC, PVC/nylon, chrome vinyl, or Teflon with a minimum operating temperature range of –20 C to 60 C is required. See Table 11 for recommended wire manufacturers and part numbers.

Table 11 — CCN Communication Bus Wiring

MANUFACTURER

Alpha 1895 — American A21451 A48301 Belden 8205 884421 Columbia D6451 — Manhattan M13402 M64430 Quabik 6130 —

Regular Wiring Plenum Wiring

It is important when connecting to a CCN communication bus that a color-coding scheme be used for the entire network to simplify the installation. It is recommended that red be used for the signal positive, black for the signal negative, and white for the signal ground. Use a similar scheme for cables containing different colored wires.

At each system element, the shields of its communication bus cables must be tied together. If the communication bus is entirely within one building, the resulting continuous shield must be connected to a ground at one point only. If the communication bus cable exits from one building and enters another, the shields must be connected to grounds at the lightning suppressor in each building where the cable enters or exits the building (one point per building only). To connect the unit to the network:

PART NU M B E R

1. Turn off power to the control box.

2. Cut the CCN wire and strip the ends of the red (+), white (ground), and black (–) conductors. (Substitute appropriate colors for different colored cables.)

3. Connect the red wire to (+) terminal on TB3 of the plug, the white wire to COM terminal, and the black wire to the (–) terminal.

4. The RJ14 CCN connector on TB3 can also be used, but is only intended for temporary connection (for example, a laptop computer running Service Tool).

IMPORTANT: A shorted CCN bus cable will prevent some routines from running and may prevent the unit from starting. If abnormal conditions occur, disconnect the CCN bus. If conditions return to normal, check the CCN connector and cable. Run new cable if necessary. A short in one section of the bus can cause problems with all system elements on the bus.

Remote Alarm and Alert Relays — The 30XW

chiller can be equipped with a remote alert and remote alarm annunciator contacts. Both relays connected to these contacts must be rated for a maximum power draw of 10 va sealed, 25 va inrush at 24 volts. The alarm relay, indicating that the complete unit has been shut down, can be connected to TB5-12 and TB5-13. Refer to unit wiring diagrams. For an alert relay, indicating that at least 1 circuit is off due to the alert, a fieldsupplied and installed relay must be connected between MBBJ3-CH25-3 and TB5-13. The action of the alarm and alert relays can be reversed from normally open to normally closed by using the Reverse Alarms Relay configuration (Reverse Alarms Relay, RV.AL).

CONFIGURATION

Touch Pilot™ Operation Configuration Tables —

configuration information entered in the following configuration tables. These tables are accessible by using Network Service Tool or ComfortVIEW™ software. The tables are the CtrlID (Controller Identification) configuration table and the USERCONF (User Configuration) table. See Tables 12 and 13.

NOTE: Always perform an Upload to obtain the latest configuration before making configuration table changes.

The Touch Pilot display operation is controlled by

Table 12 — Touch Pilot Controller Identification Configuration Table

CONTROLLER ID DATA BLOCK NO. VALUE AND RANGE QUALIFIERS

Device Name 1

Local address 2 115 Default Bus number 2 0 Default

Device (driver) type 2

Primary baud rate 3 38400 Default Secondary baud rate 3 38400 Fixed

Device description 4

Device location 4

Software part number 4 CESR-131363-01 Fixed Model number 4 (Blank) Fixed Serial number 4 (Blank) Fixed Reference number 4 Version 1.0 Fixed

Broadcast address processing list (primary) 5

Broadcast address processing list (secondary) 5 none Not applicable

CHILLDSP 8 character Name field

0 = Non-bridge 3 = Broadcast Acknowledger

Global Chiller Display 24 character text field

(Blank) 24 character text field

241-251, 254, 255 enabled 241-255 enabled/disabled

Default Optional

Defaults Optional

Table 13 — Touch Pilot™ User Configuration (USERCONF) Table

DESCRIPTION LIMITS UNITS NAME DEFAULT

Backlight always on?

Full access password

Limited access password

Active language

Time format

Date format

Units base

Contrast control

Network mode

Network settings

Alarm acknowledger

Broadcast acknowledger

Equipment CCN address

Bus number

Element number

Control variables

Equipment status (Not Used)

Equipment start/stop (Not Used)

Alarm status (Not Used)

Alarm reset (Not Used)

No Ye s

0 9999

0 1

0 2

US Metric

Manual Auto

0 1

No Ye s

0 239

1 239

Name char 8

BACKLITE No

PSWDFULL 3333

PSWDLMTD 2222

ACTLANG 0

TIMEFMT 0

DATEFMT 0

UNITBASE US

CONTRAST Auto

NETWORK 0

ALARMACK No

BROADACK No

EQUIPBUS 0

EQUIPELE 1

EQSTATUS NOT USED

STARSTOP NOT USED

ALSTATUS NOT USED

ALRESET NOT USED

BACKLIGHT ALWAYS ON? — This configuration is used to keep the backlight on continuously or to turn it off after 60 seconds with no activity.

Allowable Entries: No/Yes (No=0 or Yes=1) Default Value: No

FULL ACCESS PASSWORD — This configuration is used to specify the full access password. Refer to Table 1, Setup Menu, for additional information on passwords.

Allowable Entries: 0 through 9999 Default Value: 3333

LIMITED ACCESS PANEL — This configuration is used to

Fig. 15 — Equipment Start Screen

specify the limited access password. Allowable Entries: 0 through 9999 Default Value: 2222 ACTIVE LANGUAGE — This configuration is used to spec-

ify the display’s active language. All translatable text will be displayed in this language.

Allowable Entries: 0 (English), 1 (alternate, installed by user) Default Value: 0 TIME FORMAT — This configuration is used to specify the

format for display of time. Allowable Entries: 0 = H:MM AM/PM without leading zero

1 = HH:MM with leading zero when

necessary Default Value: 0 DATE FORMAT — This configuration is used to specify the

format for display of date. Allowable Entries: 0 = MM-DD-YYYY with leading zero

when necessary

1 = DD-MM-YYYY with leading zero

when necessary

2 = YYYY-MM-DD Default Value: 0 UNITS BASE — This configuration is used to specify the for-

mat of the units of measure. Allowable Entries: U.S.

Metric Default Value: U.S. CONTRAST CONTROL — This configuration is used to en-

able or disable the display’s auto contrast adjustment feature. When enabled, the display’s contrast will be automatically adjusted as required, based on temperature.

Allowable Entries: Manual

(Auto Contrast Adjustment Disabled)

Auto

(Auto Contrast Adjustment Enabled) Default Value: Auto NETWORK MODE — This configuration is used to set the

display’s operating mode. For additional information on operating mode, refer to Display in the Table Setup Menu. This decision will be ignored and the mode will default to Equipment when the display is connected to a device (the LEN Bus).

NOTE: A power cycle is required for this decision to take effect.

Allowable Entries: Disable = Equipment Mode

Enable = Network Mode Default Value: Disable ALARM ACKNOWLEDGER — This configuration is used

to specify whether the Touch Pilot™ display will act as the alarm acknowledger for the CCN. There can be only one alarm acknowledger per CCN. Therefore, if another CCN device such as ComfortVIEW™ software, the Autodial Gateway or TeLINK is already set as the alarm acknowledger for the CCN network then this decision should be set to No.

NOTE: The display must be in Network mode and connected to the primary CCN bus and this decision set to Ye s for alarm acknowledgement to be enabled.

Allowable Entries: No

Ye s Default Value: No

BROADCAST ACKNOWLEDGER — This configuration is used to indicate whether the Touch Pilot display will act as the broadcast acknowledger for its CCN bus. There can be only one broadcast acknowledger per CCN bus.

NOTE: The display must be in Network mode and this decision set to Ye s for broadcast acknowledgement to be enabled.

Allowable Entries: No

Ye s Default Value: 0 EQUIPMENT CCN ADDRESS — When in equipment

mode (USERCONF Table’s Network Mode decision is set to Disable), the Bus Number and Element Number decisions are used to specify the CCN address of the piece of equipment to communicate with. An Attach or power cycle must be performed for changes to take effect. These decisions will be ignored when the display is connected to the LEN bus or in Network mode. In Network mode, specify the bus and element number of the equipment communicate with using the display’s Attach function.

NOTE: In Network mode, these configurations will be overwritten with the default device address if it is changed through the Attach process.

BUS NUMBER — This configuration is used to specify the Equipment Controller bus number.

Allowable Entries: 0 through 239 Default Value: 0 ELEMENT NUMBER — This configuration is used to speci-

fy the Equipment Controller element number. Allowable Entries: 1 through 239 Default Value: 1

Machine Control Methods — Three variables con-

trol how the machine operates. These variables control the On-Off function, set point operation, and Heat-Cool operation.

Machine On/Off Control — Machine On/Off control

depends on which interface display is used. The control is different for Touch Pilot™ or Navigator™ displays. Select the correct configuration procedure below based on which interface is being used.

TOUCH PILOT MACHINE CONTROL — Machine On/Off control is determined locally by pushing the Start/Stop button on the Touch Pilot display. Pressing this button will cause the Equipment Start screen to be displayed. See Fig. 15.

Table 14 summarizes the unit control type and stop or go

status with regard to the following parameters:

• Operating type: this is selected by using the start/stop button on the front of the user interface.

• Remote start/stop contacts: these contacts are used when the unit is in remote operating type (Remote mode).

• CHIL_S_S: this network command variable relates to the chiller start/stop when the unit is in CCN control (CCN mode). When this variable forced to Disable, then the unit is stopped. When this variable is forced to Enable, then the unit runs in accordance with schedule 1.

• Start/Stop schedule: occupied or unoccupied status of the unit as determined by the chiller start/stop program (Schedule 1).

• Master control type: This parameter is used when the unit is the master unit in a two chiller lead/lag arrangement. The master control type determines whether the unit is to be controlled locally, remotely or through CCN (this parameter is a Service configuration).

• CCN emergency shutdown: if this CCN command is activated, it shuts the unit down whatever the active operating type.

• General alarm: the unit is totally stopped due to failure.

Local Mode

— To start the machine in local mode, press the Start/Stop button on the Touch Pilot display. The Equipment Start screen will be displayed. Select Local On. The control will ignore the position of Enable/Off/Remote Contact switch and all CCN network force commands, except an Emergency Stop Command. The Run Status variable, indicating the cur- rent status of the machine, will change to RUNNING, DELAY or READY. The Chiller Occupied? variable will change to YES. The Control Type variable indicates the type of control. For this configuration, Control Type will be Local. The Oper- ating Type variable will change to L-On (Local On).

Local Schedule

— To start the machine with a local schedule, press the Start/Stop button on the Touch Pilot display. The Equipment Start screen will be displayed. Select Local Schedule. The unit will start and stop according to the schedule defined in the Time Schedule menu. Two Internal Time Schedules are available and must be field programmed. Time Schedule 1 is used for single set point On-Off control. Time

Table 14 — Touch Pilot™ Start/Stop Control

Schedule 2 is used for Dual Set Point/Occupied-Unoccupied set point control. The control will ignore the position of Enable/Off/Remote Contact switch and all CCN network force commands, except the Emergency Stop Command.

The Run Status variable will indicate the current status of the machine — OFF, RUNNING, DELAY, or READY. The Chiller Occupied? variable will indicate the occupied state of the machine according to Time Schedule 1 and will be either YES (occupied) or NO (unoccupied). The Control Type vari- able will indicate the type of control. For this configuration, Control Type will be Local. The Operating Type variable will change to L-Sched (Local Schedule).

The schedules consist of 8 user-configurable occupied time periods. The control supports time schedules for local control, remote control, and ice building. These time periods can be flagged to be in effect or not in effect on each day of the week. The day begins at 00.00 and ends at 24.00. The machine will be in unoccupied mode unless a scheduled time period is in effect. If an occupied period extends past midnight, the occupied period will automatically end at 24:00 hours (midnight) and the new occupied period must be programmed to begin at 00:00 hours.

In the following example, the occupied period starts at 6:00 AM, Monday through Friday and 10:00 AM on Saturday and Sunday. The occupied time ends at 6:30 PM on Monday through Friday and 2:00 PM on Saturday and Sunday. See Fig. 16.

NOTE: This schedule was designed to illustrate the programming of the schedule function and is not intended as a recommended schedule for chiller operation.

If the chiller is to be controlled to a single set point, use Schedule 1 (OCCPC01S). This will start and stop the machine. During the unoccupied times, the chiller will be off. If the chiller is to be controlled to 2 set points, occupied and unoccupied, use Schedule 2 (OCCPC02S). This will cause the chiller to control to an occupied set point and an unoccupied set point. The machine will be able to provide cooling at any time.

To configure this option on the Touch Pilot™ display see Table 15.

ACTIVE OPERATING TYPE PARAMETER STATUS

LocalOnLocalOnLocal

-- - - - - - - - - Active - - Off

-- - - - - - - - - - Yes - Off

Active - - - - - - - - - - - Local Off

- - Active - - - - - - Unoccupied - - Local Off

- - - Active - - - Off - - - - Remote Off

- - - Active - - - - - Unoccupied - - Remote Off

- - - - Active - Off - - - - - CCN Off

- - - - Active - - - - - - - CCN Off

- - - - - Active - - Local Unoccupied - - Local Off

- - - - - Active - Off Remote - - - Remote Off

- - - - - Active - - Remote Unoccupied - - Remote Off

- - - - - Active Off - CCN - - - CCN Off

- - - - - Active - - CCN Unoccupied - - CCN Off

- Active - - - - - - - - Disabled No Local On

- - Active - - - - - - Occupied Disabled No Local On

- - - Active - - - On Cool - Occupied Disabled No Remote On

- - - - Active - On - - Occupied Disabled No CCN On

- - - - - Active - - Local Occupied Disabled No Local On

- - - - - Active - On Cool Remote Occupied Disabled No Remote On

- - - - - Active On - CCN Occupied Disabled No CCN On

Schedule

Remote

Mode

CCN

Mode

Master

Mode

CHIL_S_S

Varia ble

Remote

Start/Stop

Contact

Master Unit

Control Type

Start/Stop

Schedule

Mode

CCN

Emergency

Shutdown

General

Alarm

CONTROL

TYPE

UNIT

STATUS

on a one-time basis. To configure this option for the Touch

Fig. 16 — Chiller Schedule Screen

Pilot display:

Table 15 — Configuring the Schedule with

Touch Pilot Display

DISPLAY NAME PATH LINE NO. VALUE Period 1 DOW (MTWTFSSH) Occupied from 3 00:00 Occupied to 4 03:00 Period 2 DOW (MTWTFSSH) 5 11000000 Occupied from 6 07:00 Occupied to 7 18:00 Period 3 DOW (MTWTFSSH) 8 00100000 Occupied from 9 07:00 Occupied to 10 21:30 Period 4 DOW (MTWTFSSH) 11 00011000 Occupied from 12 07:00 Occupied to 13 17:00 Period 5 DOW (MTWTFSSH) 14 00000100 Occupied from 15 07:00 Occupied to 16 12:00

Holiday Schedule

— For the Touch Pilot display, the control

Config\

OCCDEFCS\

OCC1P01S

or OCC1P02S

2 10000000

allows up to 16 holiday periods. All holidays are entered with numerical values. To configure, first change the month (Holi- day Start Month), then the day (Holiday Start Day), then the duration (Holiday Duration) of the holiday period in days. If a holiday in included in one of the Occupied Time Periods of the schedule, the machine will follow that operating condition for the holiday. In the following examples, the holidays July 4 and December 25-26 are programmed for Holiday 1 and Holiday 2, respectively. To configure these holidays with the Touch Pilot display, see Table 16. To configure Holidays with the Navigator display, check the H (holiday) schedule on the Schedule screen and program in the desired occupied times. See Fig. 16.

Table 16 — Programming Holiday Schedules with

Touch Pilot Display

DISPLAY NAME PATH LINE NO. VALUE Holiday Start Month Start Day 24 Duration (days) 31 Holiday Start Month Start Day 225 Duration (days) 32

Timed Override

Config\HOLIDAY\HOLDY_01

Config\HOLIDAY\HOLDY_02

— With the Touch Pilot display only, each

112

time schedule can be overridden to keep the chiller in an Occupied mode (Timed Override Hours) for 1, 2, 3 or 4 hours

DISPLAY NAME PATH

Timed Override Hours

Config\OCCDEFCS\

OCC1P01S or OCC1P02S

LINE

NO.

VAL UE

Range: 0 to 4

Default: 0

If configured for a timed override, the override can be can-

celled by changing the Timed Override Hours to 0. CCN Global Time Schedule

— A CCN global schedule can be used if desired. The schedule number can be set anywhere from 65 to 99 for operation under a CCN global schedule. The 30XW chillers can be configured to follow a CCN Global Time Schedule broadcast by another system element. The ComfortVIEW™ Network Manager’s Configure and Modify commands or the Service Tool’s Modify/Names function must be used to change the number of the Occupancy Equipment Part Table Name (OCC1P01E) to the Global Schedule Number. The Schedule Number can be set from 65 to 99 (OCC1P65E to OCC1P99E).

The Occupancy Supervisory Part table name (OCC1P01S) number must be changed to configure the unit to broadcast a Global Time Schedule. The Schedule Number can be set from 65 to 99 (OCC1P65S to OCC1P99S). When OCC1PxxS is set to a value greater than 64, an occupancy flag is broadcast over the CCN every time it transitions from occupied to unoccupied or vice-versa. By configuring their appropriate Time Schedule decisions to the same number, other devices on the network can follow this same schedule. The Enable/Off/Remote Contact must be in the Enable position or the Remote Contact position with the contacts closed for the unit to operate. The Unit Run Status (STAT) will indicate the current status of the machine (OFF, RUNNING, STOPPING or DELAY), depending on the schedule. The unit Occupied status (OCC) will indicate the current occupied schedule according to the schedule, either NO or YES. The Status Unit Control Type (CTRL) will be LOCAL OFF when the switch is Off. The Status Unit Control Type will be CCN when the Enable/Off/Remote Contact switch input is On.

Refer to Appendix F for more detailed instructions regarding global schedules and the i-Vu

CCN Mode

— To allow machine control by CCN commands,

device.

press the Start/Stop button on the Touch Pilot™ display. The Equipment Start screen will be displayed. Select CCN Mode. The unit will be controlled by a CCN command to the CCN Chiller Star t/Stop variable. An external CCN device, such as Chillervisor, controls the On/Off state of the machine. When controlled by a Chillervisor, it is recommended that the Auto Start W hen SM Lost configuration be set to Yes. In the event of a loss of communication with the network, the machine will start and be controlled locally.

Careful evaluation of chilled water plant control should be reviewed. In the event local control is established, be sure that all pumps, valves, and other devices are capable of operating properly. The control will ignore the position of Enable/Off/ Remote Contact switch. The Run Status variable will indicate the current status of the machine — OFF, RUNNING, DELAY, or READY. The Control Type variable will change to CCN. The Operating Type variable will change to CCN.

For dual chiller control applications, the slave chiller must be enabled using the CCN Mode button.

Remote Mode

— To allow machine to start and stop via a remote contact closure, press the Start/Stop button on the Touch Pilot display. The Equipment Start screen will be displayed. Select Remote Mode. The unit will be controlled by the Enable/Off/Remote Contact switch (SW1). Switching the Enable/Off/Remote Contact switch to the Enable or Remote Contact position (external contacts closed) will force the unit into an occupied state. In this mode, all CCN network force

commands, except the Emergency Stop Command will be

Fig. 17 — Equipment Stop Screen

ignored. The Run Status variable will indicate the current status of the machine (OFF, RUNNING, DELAY, or READY), depending on the position of the Remote/Off/Enable Switch closure. The Chiller Occupied? variable will change to YES. The Control Type variable will change to Remote. The Oper- ating Type variable will change to Remote.

Master Mode

— To activate Dual Chiller Control, each machine must be individually configured for Dual Chiller Control. To operate the machines in Dual Chiller Mode, one machine must be designated as the master unit and one machine as the slave unit. On the master unit, press the Start/Stop button on the Touch Pilot display. The Equipment Start screen will be displayed. Select Master Mode. Failure to start the Master unit in this manner will cause both machines to operate in local mode.

The Master Unit Control can be done locally, remotely or through CCN commands per the master/slave configuration (Master Control Type). The control will ignore the position of Enable/Off/Remote Contact switch if the Master Control

Type is configured for Local Control or CCN Control. The Run Status variable, Chiller Occupied? variable, and Control Type variable will change based on the Master Control Type configured above and the Machine On/Off Control de-

fined above. The Operating Type variable will change to Master.

To Turn Machine Off

— To turn the machine off, press the Start/Stop button on the Touch Pilot display. See Fig. 17. The machine will shut down. While the unit is in Local Off, it will remain shut down and ignore all CCN commands as well as the position of Enable/Off/Remote Contact switch. The Run Status variable, indicating the current status of the machine, will change to OFF. The Chiller Occupied? variable will change to NO. The Control Type variable will indicate Local. The Operating Type variable will change to L-OFF (Local Off).

NAVIGATOR™ DISPLAY MACHINE CONTROL — Machine On/Off control with the Navigator display is determined by the configuration of the Operating Type Control (OPER). Options to control the machine locally via a switch, from a local Time Schedule, or via a Carrier Comfort Network

com-

mand are offered. See Table 17.

The schedules consist of 8 user-configurable occupied time periods. The control supports time schedules for local control, remote control, and ice building. These time periods can be flagged to be in effect or not in effect on each day of the week. The day begins at 00.00 and ends at 24.00. The machine is in unoccupied mode unless a scheduled time period is in effect. If an occupied period is to extend past midnight, the occupied period must end at 24:00 hours (midnight) and a new occupied period must be programmed to begin at 00:00 hours.

In the following example, a early morning pulldown time period is scheduled for Monday morning from 12:00 AM to 3:00 AM. The occupied period starts at 7:00 AM, Monday through Saturday. The occupied time ends at 6:00 PM on Monday and Tuesday, 9:30 PM on Wednesday, 5:00 PM on Thursday and Friday, and 12:00 PM on Saturday.

NOTE: This schedule was designed to illustrate the programming of the schedule function and is not intended as a recommended schedule for chiller operation.

Switch Control

— In the Switch Control operating type, the Enable/Off/Remote Contact switch controls the machine locally. All models are factory configured with Operating Type Control (OPER) set to SWITCH CTRL (Switch Control). With SWITCH CTRL, switching the Enable/Off/Remote Contact switch to the Enable or Remote Contact position (external contacts closed) will put the chiller in an occupied state. The Unit Run Status (STAT) will indicate the current status of the machine and will change from OFF to RUNNING or DELAY. The unit Occupied Status (OCC) will change from NO to YES. The Status Unit Control Type (CTRL) will change from LOCAL OFF when the switch is Off to LOCAL ON when in the Enable position or in the Remote Contact position with external contacts closed.

CONTROL

METHOD

(OPER)

Switch

Control

Time

Schedule

CCN

Control

OPERATING

All Local Off

ACTI VE

TYPE

Local On

Local

Schedule

CCN

ITEM ITEM EXPANSION PATH VALUE

OPER

Operating Control Ty p e

Operating Modes SLCT OPER

Table 17 — Navigator Start/Stop Control

REMOTE/OFF/ENABLE

SWITCH

Off — — — — —

Remote Open — — — — — Off

————Enable——Off —————Yes—Off — — — — — — Closed Off

Enable — — — Disable — — On

Remote Closed — — Disable — — On

Enable — Occupied — Disable — — On

Remote Closed Occupied — Disable — — On

— — Unoccupied — Disable — — Off Remote Closed — Enable Disable — — On Remote Closed — Disable Disable — — Off

Enable — — Enable Disable — — On Enable — — Disable Disable — — Off

REMOTE ON/OFF

SWITCH

TIME SCHEDULE 1

CCN CHILLER

START/STOP

(CHIL_S_S)

EMERGENCY

STOP

(EMSTOP)

ALARM

REMOTE

LOCKOUT

SWITCH

—

SWITCH CTRL

UNIT

STATUS

Off

Time Schedule

— With Time Schedule Operating Type control, the machine operates under a local schedule programmed by the user as long as the Enable/Off/Remote Contact switch is in the Enable or Remote Contact position (external contacts closed). To operate under this Operating Type Control (OPER) must be set to TIME SCHED (Time Schedule). Two Internal Time Schedules are available and must be field programmed. Time Schedule 1 (SCH1) is used for single set point On-Off control. Time Schedule 2 (SCH2) is used for dual set point On-Off and Occupied-Unoccupied set point control. The control will use the operating schedules as defined under the Time Clock mode in the Navigator display module.

ITEM ITEM EXPANSION PATH VALUE

OPER

Operating Control Ty pe

Operating Modes SLCT OPER

TIME SCHED

If the chiller is to be controlled to a single set point, use Schedule 1 (SCH1). This type of schedule will start and stop the machine only. During the unoccupied times, the chiller will be off. If the chiller is to be controlled to 2 set points, occupied and unoccupied, use Schedule 2 (SCH2). This will cause the chiller to control to an occupied set point and an unoccupied set point. The machine will be able to provide cooling at any time.

To configure this option while using the Navigator™ display, see Table 18.

Holiday Schedule

— The unit control allows up to 16 holiday periods. All holidays are entered with numerical values. First enter the month (MON.x), then the day (DAY.x), then the duration (DUR.x) of the holiday period in days. If a holiday in included in one of the Occupied Time Periods of the schedule, the machine will follow that operating condition for the holiday. In the following examples, the holidays July 4 and December 25-26 are programmed for Holiday 1 and Holiday 2 respectively.

To configure this option for the Navigator display, see

Table 19. CCN Global Time Schedule

Refer to Appendix F for more detailed instructions regarding global schedules and the i-Vu

device.

Table 18 — Configuring Schedules with

Navigator™ Display

ITEM ITEM EXPANSION PATH VALUE OCC.1 Occupied Time UNO.1 Unoccupied Time 03:00 MON.1 Monday Select Yes TUE.1 Tuesday Select No WED.1 Wednesday Select No THU.1 Thursday Select No FRI.1 Friday Select No SAT.1 Saturday Select No SUN.1 Sunday Select No HOL.1 Holiday Select No OCC.2 Occupied Time UNO.2 Unoccupied Time 18:00 MON.2 Monday Select Yes TUE.2 Tuesday Select Yes WED.2 Wednesday Select No THU.2 Thursday Select No FRI.2 Friday Select No SAT.2 Saturday Select No SUN.2 Sunday Select No HOL.2 Holiday Select No OCC.3 Occupied Time UNO.3 Unoccupied Time 21:30 MON.3 Monday Select No TUE.3 Tuesday Select No WED.3 Wednesday Select Yes THU.3 Thursday Select No FRI.3 Friday Select No SAT.3 Saturday Select No SUN.3 Sunday Select No HOL.3 Holiday Select No OCC.4 Occupied Time UNO.4 Unoccupied Time 17:00 MON.4 Monday Select No TUE.4 Tuesday Select No WED.4 Wednesday Select No THU.4 Thursday Select Yes FRI.4 Friday Select Yes SAT.4 Saturday Select No SUN.4 Sunday Select No HOL.4 Holiday Select No OCC.5 Occupied Time UNO.5 Unoccupied Time 12:00 MON.5 Monday Select No TUE.5 Tuesday Select No WED.5 Wednesday Select No THU.5 Thursday Select No FRI.5 Friday Select No SAT.5 Saturday Select Yes SUN.5 Sunday Select No HOL.5 Holiday Select No

Clock SCH1 PER.1

Clock SCH2 PER.1

Clock SCH1 PER.2

Clock SCH2 PER.2

Clock SCH1 PER.3

Clock SCH2 PER.3

Clock SCH1 PER.4

Clock SCH2 PER.4

Clock SCH1 PER.5

Clock SCH2 PER.5

Time

or Time

Time

or Time

Time

or Time

Time

or Time

Time

or Time

00:00

07:00

Table 19 — Configuring Holiday Schedules

for Navigator Display

ITEM ITEM EXPANSION PATH VALUE

MON.1 Holiday Start Month DAY.1 Holiday Start Day 4 DUR.1 Holiday Duration in Day 1 MON.2 Holiday Start Month DAY.2 Holiday Start Day 25 DUR.2 Holiday Duration in Day 2

Clock HOLI HOL.1

Clock HOLI HOL.2

Time

CCN Control

— With CCN Operating Type control, the machine operates under CCN control as long as the Enable/Off/ Remote Contact Switch is in the Enable or Remote Contact position (external contacts closed.) To operate under this Operating Control, OPER must be set to CCN CONTROL. An external CCN device, such as Chillervisor, controls the On/Off state of the machine. When controlled by a Chillervisor, it is recommended that the Auto Start When SM Lost (AU.SM) be set to Yes.

Careful evaluation of Chilled Water Plant control should be reviewed. In the event Local Control is established, be sure that all pumps, valves, and other devices are capable of operating properly. In the event of a loss of communication with the network, the machine will start and be controlled locally. The CCN device forces the variable CHIL_S_S to control the chiller. The Unit Run Status (STAT) will indicate the current status of the machine (OFF, RUNNING, STOPPING or DELAY), depending on the CCN command. The unit Occupied status (OCC) will indicate the current occupied state according to the CCN command and will be displayed as either NO or YES. The Status Unit Control Type (CTRL) will be LOCAL OFF when the Enable/Off/Remote Contact switch is Off. The Status Unit Control Type will be CCN when the Enable/Off/Remote Contact switch input is Closed and the CHIL_S_S variable is Stop or Start.

For Dual Chiller Control applications, the Slave Chiller must be enabled using the CCN CONTROL option.

ITEM ITEM EXPANSION PATH VALUE

OPER

AU.S M

Operating Control Ty pe

Auto Start when SM Lost

Operating Modes SLCT OPER

Configuration SERV YES

CCN CONTROL

Entering Fluid Control Option — The factory de-

fault for the chilled water fluid set point is controlling to the leaving water temperature. An option to configure the machine for entering water control is available. The control operation remains the same except the control point is focused on the entering water temperature, rather than the leaving water temperature when configured.

To configure this option for the Touch Pilot™ display:

DISPLAY NAME PATH

Entering Fluid Control

Service\ SERVICE1

LINE

NO.

No = Leaving Water Control

Yes = Entering Water Control

VAL UE

To configure this option for the Navigator™ display:

ITEM ITEM EXPANSION PATH VALUE

EWTO Entering Water

Control

Configuration SERV No = Leaving

Water Control Yes = Entering Water Control

Cooling Set Point Selection — Several options for

controlling the Leaving Chilled Water Set Point are offered and are configured by the Cooling Set Point Select (Setpoint Se- lect, SP.SE) variable. In addition to the Cooling Set Point Se- lect, Ice Mode Enable discussed later in this book, and Heat Cool Select (Heat/Cool Select, HC.SE) variables also have a role in determining the set point of the machine. All units are shipped from the factory with the Heat Cool Select set to 0.

All default set points are based on Leaving Water Control (Entering Fluid Control, EWTO) set to No. Values must be confirmed for the individual set points. Limits for the set points are listed in the configurations noted below.

To configure these options for the Touch Pilot display, see Table 20A. To configure these options for the Navigator display, see Table 20B.

Table 20A — Cooling Set Point Selection

with Touch Pilot Display

DISPLAY NAME PATH LINE NO. VALUE

Cooling Setpoint 1 Setpoint 2 Range: 14 to 70 F

Cooling Setpoint 2 Setpoint 3 Range: 14 to 70 F

Cooling Ice Setpoint Setpoint 4 Range: -20 to 32 F

(–10.0 to 21.1 C) Default: 44 F (6.6 C)

(–28.9 to 0 C) Default: 44 F (6.6 C)

Table 20B — Cooling Set Point Selection

with Navigator Display

ITEM ITEM EXPANSION PATH VALUE

CSP.1 Cooling Setpoint 1 Setpoints COOL

CSP.2 Cooling Setpoint 2 Setpoints COOL

CSP.3 Ice Setpoint Setpoints COOL

Range: 14 to 70 F (–10.0 to 21.1 C) Default: 44 F (6.6 C)

Range: -20 to 32 F (–28.9 to 0 C) Default: 44 F (6.6 C)

In all cases, there are limits on what values are allowed for each set point. These values depend on the Cooler Fluid Type and the Brine Freeze Set point, discussed later. See Table 21.

Table 21 — Configuration Set Point Limits

COOLER FLUID TYPE

SET POINT LIMITS

Minimum * 38 F (3.3 C) 14 F (–10.0 C) Maximum 60 F (15.5 C)

*The minimum set point for Medium Temperature Brine applications

is related to the Brine Freeze Point. The set point is limited to be no less than the Brine Freeze Point +5° F (2.8° C).

(COOLER FLUID TYPE, FLUD)

1, Water 2, Brine

The Setpoint Select configuration can be set to five different control options: Set Point Occupancy, Set Point 1, Set Point 2, 4-20 mA Input, and Dual Switch.

CAUTION

Brine duty application (below 40 F [4.4 C] LCWT) for chiller normally requires factory modification. Contact a Carrier Representative for details regarding specific applications. Operation below 40 F (4.4 C) LCWT without modification can result in compressor failure.

SET POINT OCCUPANCY — Set Point Occupancy is the default configuration for the Setpoint Select variable. When Setpoint Select (Setpoint Select, SP.SE) is configured to 0 (Setpoint Occ), the unit’s active set point is based on Cooling Set Point 1 (Cooling Setpoint 1, CSP.1) during the occupied period while operating under Time Schedule 1 (SCH1). If the Time Schedule 2 (SCH2) is in use, the unit’s active set point is based on Cooling Set Point 1 (Cooling Setpoint 1, CSP.1) dur- ing the occupied period and Cooling Set Point 2 (Cooling Set- point 2, CSP.2) during the unoccupied period. See Tables 22 and 23.

To configure this option while using a Touch Pilot display:

DISPLAY NAME PATH LINE NO. VALUE

Setpoint select Status GENUNIT 25 0 (Setpoint Occupied)

To change this value, a Control Point Force must be applied. When configured correctly, Setpoint Control (Setpoint Con- trol, SP.SE) will indicate Auto.

To configure this option while using a Navigator display:

ITEM ITEM EXPANSION PATH VALUE

SP.SE Setpoint Select Operating Modes SLCT Setpoint Occ

Table 22 — Cooling Set Point Selection Touch Pilot™ Parameters

SET POINT

CONFIGURATION

(Setpoint Select)

(Auto)

1 (Setp 1) — — — — Cooling Setpoint 1 2 (Setp 2) — — — — Cooling Setpoint 2

3 (4-20 mA) — — — — 4 to 20 mA Input

4 (Setp Sw)

ICE MODE

ENABLE

(ice_cnfg)

YES

DUAL SET

POINT INPUT

(SETP_SW)

— — Occupied Cooling Setpoint 1 — — Unoccupied Cooling Setpoint 2 — Open Unoccupied Cooling Ice Setpoint — Closed Unoccupied Cooling Setpoint 2 — — Occupied Cooling Setpoint 1

Open — — Cooling Setpoint 1

Closed — — Cooling Setpoint 2

Open — — Cooling Setpoint 1 Closed Open — Cooling Ice Setpoint Closed Closed — Cooling Setpoint 2

ICE DONE INPUT

(ICE_SW)

TIME

SCHEDULE 2

Table 23 — Cooling Set Point Selection Navigator™ Parameters

PARAMETER STATUS

Control Method

(OPER)

LOCAL COOL

CCN COOL

Select (HC.SE)

Heat/Cool

Setpoint

Select (SP.SE)

Setpoint Occ — — — Occupied CSP.1 Setpoint Occ — — — Unoccupied CSP.2 Setpoint Occ Enable Open — Unoccupied CSP.3

Setpoint 1 — — — — CSP.1 Setpoint 2 — — — — CSP.2

4-20mA Setp — — — — 4_20mA

— Enable Open Closed — CSP.3 — Enable Closed Closed — CSP.2 — — — Open — CSP.1

Dual Setp Sw — — Closed — CSP.2

— — — — Occupied CSP.1 — — — — Unoccupied CSP.2

Ice Mode

Enable (ICE.M)

Ice Done

(ICE.D)

Dual Setpoint

Switch (DUAL)

Setpoint

Occupied

(SP.OC)

ACTIVE

SET POINT

ACTIVE

SET POINT

Set Point 1

— When Set Point Select (Setpoint Select, SP.SE) is configured to 1 (Setpoint 1), the unit’s active set point is based on Cooling Set Point 1 (Cooling Setpoint 1, CSP.1).

To configure this option with the Touch Pilot display:

DISPLAY NAME PATH

Setpoint Select Status GENUNIT 25 1 (Set Point 1)

LINE

NO.

VAL UE

To change this value, a Control Point Force must be applied. When configured correctly, Setpoint Control will indicate Setp 1.

To configure this option with the Navigator™ display:

ITEM ITEM EXPANSION PATH VALUE

SP.SE Setpoint Select Operating Modes SLCT Setpoint 1

Set Point 2

— When Set Point Select (Setpoint Select, SP.SE) is configured to 2 (Setpoint 2), the unit’s active set point is based on Cooling Set Point 2 (Cooling Setpoint 2, CSP.2).

To configure this option with the Touch Pilot™ display:

DISPLAY NAME PATH

Setpoint Select Status GENUNIT 25 2 (Set Point 2)

LINE

NO.

VAL UE

To change this value, a Control Point Force must be applied. When configured correctly, Setpoint Control (Status GENUNIT) will indicate Setp 2.

To configure this option with the Navigator display:

ITEM ITEM EXPANSION PATH VALUE

SP.SE Setpoint Select Operating Modes SLCT Setpoint 2

4 to 20 mA Input

— When Set Point Select (Setpoint Select, SP.SE) is configured to 3 (4-20 mA Setp), the unit’s active set point is based on an field supplied, external 4 to 20 mA signal input to the Energy Management Module (EMM). Care should be taken when interfacing with other manufacturer’s control systems, due to power supply differences of full wave bridge versus half wave rectification. The two different power supplies cannot be mixed. ComfortLink™ controls use half wave rectification. A signal isolation device should be utilized if a full wave bridge signal generating device is used.

The following equation is used to control the set point. See

Fig. 18.

Fahrenheit Set Point = 10 + 70(mA – 4)/16 (deg F) Celsius Set Point = –12.2 + 38.9(mA – 4)/16 (deg C) To configure this option while using a Touch Pilot display:

DISPLAY NAME PATH

Setpoint Select Status GENUNIT 25 3 (4-20 mA Input)

LINE

NO.

VAL UE

To change this value, a Control Point Force must be applied. When configured correctly, Setpoint Control will indicate 4-20 mA.

To configure this option while using a Navigator display:

Fig. 18 — 4 to 20 mA Set Point Control

10 12 14 16 18 20

mA Signal

Set Point

Min LWT, Cooler Fluid Type = 1, FLUD=Brine

Min LWT, Cooler Fluid Type = 1, FLUD=Water

02468

Max LWT

A30-4830

To configure this option with the Touch Pilot display:

ITEM ITEM EXPANSION PATH VALUE

SP.SE Setpoint Select Operating Modes SLCT 4-20 mA Setp

Dual Switch

— When Set Point Select (Setpoint Select, SP.SE) is configured to 4 (Dual Setp Sw), the unit’s active set point is based on Cooling Set Point 1 (Cooling Setpoint 1, CSP.1) when the Dual Set Point switch contact is open and Cooling Set Point 2 (Cooling Setpoint 2, CSP.2) when it is closed.

To configure this option while using a Touch Pilot display:

DISPLAY NAME PATH

Setpoint Select Status GENUNIT 25

LINE

NO.

4 (Dual Setpoint Switch)

VAL UE

To change this value, a Control Point Force must be applied. When configured correctly, Setpoint Control will indicate Setp Sw.

To configure this option while using a Navigator display:

ITEM ITEM EXPANSION PATH VALUE

SP.SE Setpoint Select Operating Modes SLCT

Dual Setp Sw

Chilled Water Fluid Type Selection — The chilled

water fluid must be configured. The fluid type must be configured to obtain the proper leaving water set point control range and freeze protection. The Cooler Fluid Type (Cooler Fluid Type , FLUD) can be set to water or brine.

FRESH WATER — Configure the unit for Cooler Fluid Type (Cooler Fluid Type, FLUD) to water for units without brine or glycol installed in the chilled water loop. The factory default fluid type is fresh water. Use this option for fresh water systems. This will allow for a water temperature set point of 38 to 60 F (3.3 to 15.5 C). With water as the selection, the Freeze Point is fixed at 34 F (1.1 C).

DISPLAY

NAME

Cooler Fluid Type

PATH

Main Menu Service SERVICE1 1 1 = Water

LINE

NO.

VAL UE

To configure this option with the Navigator display:

ITEM ITEM EXPANSION PATH VALUE

FLUD Cooler Fluid Type Configuration SERV Water

BRINE OR GLYCOL OPERATION — Configure the unit for Cooler Fluid Type (Cooler Fluid Type, FLUD) to brine for brine or glycol chilled water loops. This option will allow for a set point temperature range of 14 to 60 F (–10.0 to 15.5 C). Before configuring this selection, confirm that a suitable antifreeze has been added and is at a sufficient concentration to protect the loop. Additionally, the Brine Freeze Set Point (Brine Freeze Setpoint, LOSP) must be set for proper freeze protection operation. Set the Brine Freeze Set Point to the burst protection provided by the glycol concentration. This value will be Freeze Point for the fluid.

To configure this option with the Touch Pilot display:

DISPLAY

NAME

Cooler Fluid Type

Brine Freeze Setpoint

PATH

Main Menu

Service SERVICE1

Main Menu

Service SERVICE1

LINE

NO.

12 = Brine

VALU E

Dependent on fluid concentration

To configure this option with the Navigator display:

ITEM ITEM EXPANSION PATH VALUE

FLUD Cooler Fluid Type Configuration SERV Brine

LOSP

Brine Freeze Setpoint

Configuration SERV

Dependent on fluid concentration

Cooler Pump Control — It is required for all chillers

that the cooler pump control be utilized unless the chilled water pump runs continuously or the chilled water system contains a suitable concentration of antifreeze solution. When the Cooler Pumps Sequence is configured, the cooler pump output will be energized when the chiller enters an "ON" mode. The cooler pump output is also energized when certain alarms are generated. The cooler pump output should be used as an override to the external pump control if cooler pump control is not utilized. The cooler pump output is energized if a P.01 Water Exchanger Freeze Protection alarm is generated, which provides additional freeze protection if the system is not protected with a suitable antifreeze solution.

The 30XW units can be configured for external cooler pump control. Cooler Pumps Sequence is the variable that must be confirmed in the field. Proper configuration of the cooler pump control is required to provide reliable chiller operation. The factory default setting for Cooler Pumps Sequence is 0 (No Pump). The configuration settings for Cooler Pumps Sequence are 1 (1 pump only) for single pump control and 2 (2 pumps auto). Configuration settings 3 (PMP 1 Manual) and 4 (PMP 2 Manual) are for dual pump control only.

If the Cooler Pumps Sequence (PUMP) is set to 1, the control will start the pump. If a flow failure is detected, the unit will shut down and must be manually reset. If the Cooler Pumps Sequence (PUMP) is set to 2, the control will start the lead pump and automatically alternate the operation of the pumps to even the wear. If a flow failure is detected, the unit will shut down and the lag pump will attempt to start. If flow is established within the Unit Off to On Delay (DELY) period the unit will restart automatically.

Two manual control options are also available. When the Cooler Pumps Sequence (PUMP) is set to 3, Cooler Pump 1 will always operate. If a flow failure is detected, the unit will shut down and must be manually reset. When the Cooler Pumps Sequence (PUMP) is set to 4, Cooler Pump 2 will always operate. If a flow failure is detected, the unit will shut down and must be manually reset.

For all Cooler Pumps Sequence (PUMP) settings (including

0), closure of both the chilled water flow switch (CWFS) and the chilled water pump interlock contact (connected across TB5 terminals 1 and 2) are required. In addition, for Cooler Pumps Sequence settings of PUMP = 1, 2, 3, 4, normally open auxiliary contacts for Pump 1 and Pump 2 (wired in parallel) must be connected to the violet and pink wires located in the harness from the MBB-J5C-CH18 connector. The wires in the harness are marked "PMP1-13" and "PMP1-14". See the field wiring diagram in the 30XW Installation Instructions.

Regardless of the cooler pump control option selected, if the chilled water flow switch/interlock does not close within the Unit Off to On Delay period after the unit is enabled and in an ON mode, alarm P.91 will be generated. Other conditions which will trigger this alarm include:

• Cooler pump interlock is open for at least 15 seconds during

chiller operation.

• Lag chiller in Master/Slave Control pump interlock does not

close after 1 minute of the pump start command.

• Cooler pump control is enabled and the chilled water flow

switch/interlock is closed for more than 2 minutes following

a command to shut down the pump.

The last alarm criterion can be disabled. If Flow Checked if Pmp Off (Configuration OPTN P.LOC) is set to NO, the control will ignore the pump interlock input if the cooler pump output is OFF.

The ComfortLink™ controls have the ability to periodically start the pumps to maintain the bearing lubrication and seal integrity. If Pump Sticking Protection (Configuration OPTN PM.PS) is set to YES, and if the unit is off at 2:00 PM, a pump will be started once each day for 2 seconds. If the unit has

2 pumps, Pump 1 will be started on even days (such as day 2, 4, or 6 of the month); Pump 2 will be started on odd days. The default for this option is PM.PS=NO.

The pump will continue to run for 60 seconds after an off

command is issued. COOLER PUMP CONTROL CONFIGURATIONS No Pump Control

— To configure cooler pump control op-

tions with the Touch Pilot™ display:

DISPLAY NAME PATH

Cooler Pumps Sequence

Main Menu Config USER

LINE

NO.

VAL UE

0 (No Pump Control)

To configure cooler pump control options with the Naviga-

tor™ display:

ITEM ITEM EXPANSION PATH VALUE

PUMP

Single Pump Control

Cooler Pumps Sequence

Configuration OPTN No Pump

— To configure cooler pump control

options with the Touch Pilot display:

DISPLAY NAME PATH

Cooler Pumps Sequence

Pump Sticking Protection

Flow Checked if C Pump Off

Main Menu Config USER

LINE

NO.

VAL UE

1 (Single Pump Control)

Default = No No = Disabled Yes = Enabled

Default = Yes No = Disabled Yes = Enabled

To configure cooler pump control options with the Naviga-

tor display:

ITEM ITEM EXPANSION PATH VALUE

Cooler Pumps

PUMP

Sequence

Periodic Pump

PM.PS

Start

Flow Checked

P. LO C

if Pmp Off

Dual Pump and Manual Control

Configuration OPTN 1 Pump Only

Configuration OPTN

Default = No No = Disabled Yes = Enabled

Default = Yes No = Disabled Yes = Enabled

— To configure cooler

pump control options with the Touch Pilot™ display:

DISPLAY NAME PATH

Cooler Pumps Sequence

Pump Auto Rotation Delay

Pump Sticking Protection

Flow Checked if C Pump Off

Main Menu

Config USER

Main Menu

Config USER

Main Menu

Config USER

Main Menu

Config USER

LINE

NO.

14 Default = 48 hours

VAL UE

2 (2 Pumps Automatic) 3 (Pump 1 Manual) 4 (Pump 2 Manual)

Default = No No = Disabled Yes = Enabled

Default = Yes No = Disabled Yes = Enabled

To configure cooler pump control options with the Naviga-

tor™ display:

ITEM ITEM EXPANSION PATH VALUE

PUMP

ROT.P

PM.PS

P. LO C

Cooler Pumps Sequence

Pump Rotation Delay

Periodic Pump Start

Flow Checked if Pmp Off

Configuration OPTN

2 Pumps Auto PMP1 Manual PMP2 Manual

Default = 48 hours

Default = No No = Disabled Yes = Enabled

Default = Yes No = Disabled Yes = Enabled

Machine Start Delay — An option to delay the start of

the machine is also available. This parameter is useful in keeping multiple machines from starting at the same time in case of a power failure. The parameter has a factory default of 1 minute. This parameter also has a role in the timing for a chilled water flow switch alarm. The flow switch status is not checked until the delay time has elapsed.

To configure this option with the Touch Pilot display:

DISPLAY NAME PATH

Unit Off to On Delay

Main Menu

Config USER

LINE

NO.

6 Default = 1 Minute

VAL UE

To configure this option with the Navigator display:

ITEM ITEM EXPANSION PATH VALUE

DELY Minutes Off Time Configuration OPTN

Default = 1 Minute

Circuit/Compressor Staging and Loading —

The AquaForce® 30XW chillers employ one compressor per circuit. As a result, circuit and compressor staging are the same. The control has several control option parameters to load the compressors. The circuit/compressor start can be configured as well as the loading of each circuit/compressor.

CIRCUIT/COMPRESSOR STAGING — The control can be configured to decide which circuit/compressor starts first, by configuring Lead/Lag Circuit Select (Staged Loading Sequence, LLCS). Three options for this variable are allowed: Automatic Lead-Lag, Circuit A Leads or Circuit B Leads. The factory default is Automatic Lead-Lag.

The automatic lead-lag function determines which circuit/ compressor starts. When enabled, the control will determine which circuit/compressor starts to even the wear of the compressor. The compressor wear factor (combination of starts and run hours) is used to determine which compressor starts.

Compressor Wear Factor = (Compressor Starts) + 0.1 (Compressor Run Hours)

The circuit/compressor with the lowest compressor wear factor is the circuit that starts first.

If starting a particular circuit/compressor first is desired, that can also be configured with the same variable.

To configure this option with the Touch Pilot display:

DISPLAY NAME PATH

Circuit Loading Sequence

Main Menu

Config USER

To configure this option with the Navigator display:

ITEM ITEM EXPANSION PATH VALUE

Lead/Lag

LLCS

Circuit Select

CIRCUIT/COMPRESSOR LOADING — The control can be configured to stage the circuit/compressors. The Loading Sequence Select (Circuit Loading Sequence, LOAD) setting determines how the control will perform loading. The configuration can be set to Equal or Staged.

Equal Loading

— With Equal loading, the circuit which starts first will maintain the minimum stage of capacity with the slide valve fully unloaded. When additional capacity is required, the next circuit with the lowest compressor wear factor is started with its slide valve at minimum position. As additional capacity is required, the slide valve for a circuit will be adjusted in approximately 5% increments to match capacity requirements.

LINE

NO.

Configuration

OPTN

VAL UE

0 (Automatic Lead-lag) 1 (Circuit A Leads) 2 (Circuit B Leads) Default = 0 (Automatic Lead-lag)

Range: Automatic, Cir A Leads, Cir B Leads, Cir C Leads Default – Automatic

The control will alternate between circuits to maintain the same percentage of capacity on each circuit.

Staged Loading

— If staged loading is selected, the circuit which starts first will gradually load its slide valve to match capacity requirements until the circuit is fully loaded. Once the circuit is fully loaded and additional capacity is required, the control will start an additional circuit fully unloaded. The control will gradually unload the circuit which was fully loaded to match capacity requirements.

To configure this option with the Touch Pilot™ display:

DISPLAY NAME PATH

Staged Loading Sequence

Main Menu Config USER

LINE

NO.

VAL UE

Default = No No (Equal) Yes (Staged)

To configure this option with the Navigator™ display:

ITEM ITEM EXPANSION PATH VALUE

Loading Sequence

LOAD

Select

Configuration OPTN

Default = Equal Equal Staged

Minimum Load Control — Minimum Load Control

can be a factory-installed option or a field-installed accessory. If installed, and its operation is desired, the Minimum Load Control must be enabled. Once enabled, the valve will be operational only during the first stage of cooling.

To configure this option with the Touch Pilot display:

DISPLAY NAME PATH

Hot Gas Bypass Select

Main Menu Service

FAC TORY

LINE

NO.

Default = No No (No Minimum

Load Control) Yes (Minimum Load Control Installed)

VAL UE

A power cycle is required for the values to take effect. To configure this option with the Navigator display:

ITEM

HGBP

ITEM

EXPANSION

Hot Gas Bypass Select

PATH VALUE

Configuration UNIT

No = No Minimum Load Control Yes = Minimum Load Control Installed

A power cycle is required for the values to take effect.

Dual Chiller Control — The dual chiller routine is

available for the control of two units installed in series or parallel supplying chilled fluid on a common loop. One chiller must be configured as the master chiller, the other as the slave chiller. An additional leaving fluid temperature thermistor (dual chiller LWT) must be installed in the common chilled water piping as described in the Installation Instructions for both the master and slave chillers. See the Field Wiring section in the 30XW Installation Instructions for dual chiller LWT sensor control wiring.

The control algorithm relies on several parameters that must be field configured for operation. Both chillers must be on the same Carrier Comfort Network On both chillers, Master/Slave Select (Master/Slave Select, MSSL) must be enabled. The water piping arrangement, Chillers in Series (Chiller in Series, SERI), must be configured. The master chiller must be programmed with the Slave Chiller Address (Slave Address, SLVA). Additional optional pro- gramming parameters may be configured to meet application requirements.

Lead/Lag Balance Select (Lead Lag Select, LLBL) determines which chiller is the lead machine. The options are Always Lead, Lag if Fail, and Runtime Select. Under Runtime Select control, the lead chiller will change based on the time increment selected in the Lead/Lag Balance Delta configuration (Lead/Lag Balance Data, LLBD). If the run hour difference

bus with different addresses.

between the master and the slave remains less than the Lead/ Lag Balance Delta, the chiller designated as the lead will remain the lead chiller. The Lead/Lag changeover between the master and the slave chiller due to hour balance will occur during chiller operating odd days, such as day 1, day 3, and day 5 of the month, at 12:00 a.m. If a lead chiller is not designated, the master chiller will always be designated the lead chiller.

The dual chiller control algorithm has the ability to delay the start of the lag chiller in two ways. The Lead Pulldown Time parameter (Lead Pulldown Type, LPUL) is a one-time time delay initiated after starting the lead chiller, before checking whether to start an additional chiller. This time delay gives the lead chiller a chance to remove the heat that the chilled water loop picked up while being inactive during an unoccupied period. The second time delay, Lead/Lag Delay (Lag Start Timer, LLDY) is a time delay imposed between the last stage of the lead chiller and the start of the lag chiller. This prevents enabling the lag chiller until the lead/lag delay timer has expired.

A quicker start of the lag chiller can be accomplished by configuring the Start if Error Higher parameter (Start if Erro r Higher, LL.ER). If the difference between the common leav- ing water temperature and the set point is greater than the configured value, then the lag chiller will start.

A minimum on time for the lag chiller can be programmed with the Lag Minimum Running Time configuration (Lag

Minimum Running Time, LAG.M). This parameter causes the control to run the lag chiller for the programmed minimum on time. The Lag Unit Pump Select (Lag Unit Pump Control, LAGP) can be configured such that the pump can be on or off while the chiller is off. This parameter is only active in Parallel Chiller Operation.

For units with a Touch Pilot display, two additional steps must be completed to start the machine. On the master chiller, the Master Control Type must be configured for the start control defined in the Machine Control configuration. To start the machines, the master chiller must be started with the Start/Stop button and Master Mode selected. The slave chiller must be started with the CCN Mode selected.

Each application, Parallel and Series, are described separately below.

DUAL CHILLER CONTROL FOR PARALLEL APPLICATIONS — To configure the master chiller for parallel applications using the Touch Pilot display, see Table 24. To configure the master chiller for parallel applications using the Navigator display, see Table 25. A power cycle is required for the values to take effect.

To configure the slave chiller for parallel applications using the Touch Pilot display, see Table 26. To configure the slave chiller for parallel applications using the Navigator display, see Table 27.

+ 118 hidden pages

Carrier 30XW150-400 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual