Carrier AQUASNAP 30RB060-390 User guide

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53300028-01 Printed in U.S.A. Form 30RB-3T Pg 1 12-09 Replaces: 30RB-2T
Controls, Start-Up, Operation, Service
and Troubleshooting
CONTENTS
Page
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . .2
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Conventions Used in This Manual . . . . . . . . . . . . . . . . . . .3
Basic Control Usage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
• SCROLLING MARQUEE DISPLAY
• ACCESSORY NAVIGATOR™ DISPLAY MODULE
CONTROLS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-43
General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Main Base Board (MBB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Scroll Protection Module (SPM). . . . . . . . . . . . . . . . . . . . . .7
Electronic Expansion Valve (EXV) Board . . . . . . . . . . . .8
Fan Boards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Reverse Rotation Board . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
• DIAL SETTINGS
• PHASE REVERSAL PROTECTION
• PHASE LOSS AND UNDER-VOLTAGE
PROTECTION
Enable-Off-Remote Contact Switch. . . . . . . . . . . . . . . . .13
Emergency On/Off Switch . . . . . . . . . . . . . . . . . . . . . . . . . .13
Energy Management Module (EMM) . . . . . . . . . . . . . . . .14
Energy Management Module
Heat Reclaim (EMM HR) . . . . . . . . . . . . . . . . . . . . . . . . . .15
Local Equipment Network . . . . . . . . . . . . . . . . . . . . . . . . . .16
Board Addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Control Module Communication . . . . . . . . . . . . . . . . . . . .16
•REDLED
• GREEN LED
• YELLOW LED
Carrier Comfort Network®(CCN) Interface . . . . . . . . . .16
Configuration Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
• MINIMUM LOAD CONTROL
• RAMP LOADING
• MINUTES OFF TIME
Dual Chiller Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Capacity Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
• CAPACITY CONTROL OVERRIDES
Head Pressure Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
• LOW AMBIENT TEMPERATURE HEAD PRESSURE
CONTROL OPTION
• LOW AMBIENT TEMPERATURE HEAD PRESSURE
CONTROL OPERATING INSTRUCTIONS
Cooler Pump Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Machine Control Methods . . . . . . . . . . . . . . . . . . . . . . . . . .32
• SWITCH CONTROL
• TIME SCHEDULE
• CCN CONTROL
• UNIT RUN STATUS
Cooling Set Point Selection . . . . . . . . . . . . . . . . . . . . . . . .33
• SET POINT 1
• SET POINT 2
•4TO20mAINPUT
• DUAL SWITCH
• SET POINT OCCUPANCY
Temperature Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Demand Limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
• 2-STEP SWITCH CONTROLLED
Page
• EXTERNALLY POWERED (4 to 20 mA Controlled)
• CCN LOADSHED CONTROLLED
Remote Alarm and Alert Relays . . . . . . . . . . . . . . . . . . . . 41
PRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43,44
System Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44,45
Actual Start-Up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Operating Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
• TEMPERATURES
•VOLTAGE
• MINIMUM FLUID LOOP VOLUME
• FLOW RATE REQUIREMENTS
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45-49
Sequence of Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Dual Chiller Sequence of Operation . . . . . . . . . . . . . . . . 45
Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Optional Heat Reclaim Module . . . . . . . . . . . . . . . . . . . . . 49
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49-57
Electronic Expansion Valve (EXV) . . . . . . . . . . . . . . . . . . 49
• EXV TROUBLESHOOTING PROCEDURE
Cooler. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
• FREEZE PROTECTION
• LOW FLUID TEMPERATURE
• LOSS OF FLUID FLOW PROTECTION
• TUBE PLUGGING
• RETUBING
• TIGHTENING COOLER HEAD BOLTS
• CHILLED WATER FLOW SWITCH
RTPF Condenser Coil Maintenance and Cleaning
Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
• REMOVE SURFACE LOADED FIBERS
• PERIODIC CLEAN WATER RINSE
• ROUTINE CLEANING OF COIL SURFACES
MCHX Condenser Coil Maintenance and Cleaning
Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Condenser Fans. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Refrigerant Circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
• LEAK TESTING
• REFRIGERANT CHARGE
Safety Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
• COMPRESSOR PROTECTION
• CRANKCASE HEATERS
Relief Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
• HIGH-SIDE PROTECTION
• LOW-SIDE PROTECTION
Compressors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
• COMPRESSOR REPLACEMENT
• OIL CHARGE
• SYSTEM BURNOUT CLEANUP PROCEDURE
MAINTENANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Recommended Maintenance Schedule . . . . . . . . . . . . . 57
TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . 57-81
Alarms and Alerts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
• DIAGNOSTIC ALARM CODES AND POSSIBLE
CAUSES
AQUASNAP®
30RB060-390
Air-Cooled Liquid Chillers

2
CONTENTS (cont)
Page
Sensors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Thermistors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
• COOLER LEAVING FLUID SENSOR
• COOLER ENTERING FLUID SENSOR
• DUAL CHILLER LWT
• COMPRESSOR RETURN GAS TEMPERATURE
• OUTDOOR AIR TEMPERATURE
• REMOTE SPACE TEMPERATURE
Service Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
APPENDIX A — LOCAL DISPLAY TABLES . . . . . . 82-93
APPENDIX B — CCN TABLES . . . . . . . . . . . . . . . . . . 94-107
APPENDIX C — CCN ALARM DESCRIPTION . . 108-111
APPENDIX D — R-410A PRESSURE VS.
TEMPERATURE CHART. . . . . . . . . . . . . . . . . . . . . . . . . 112
INDEX. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .113,114
START-UP CHECKLIST FOR 30RB
LIQUID CHILLER . . . . . . . . . . . . . . . . . . . . . . . . CL-1 to CL-9
SAFETY CONSIDERATIONS
Installing, starting up, and servicing this equipment can be
hazardous due to system pressures, electrical components, and
equipment location (roof, elevated structures, etc.). Only
trained, qualified installers and service mechanics should
install, start up, and service this equipment. When working on
this equipment, observe precautions in the literature, and 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 electri-
cal components..
GENERAL
This publication contains Controls, Operation, Start-Up,
Service and Troubleshooting information for the 30RB060-390
air-cooled liquid chillers with electronic controls. The 30RB
chillers are equipped with ComfortLink™ controls and
electronic expansion valves.
NOTE: Unit sizes 315-390 are modular units that are shipped
in separate sections as modules A or B as noted in position 8 of
the unit model number. Installation directions specific to these
units are noted in these instructions. For modules 315A, 315B,
330A, 330B, 345A, 345B, and 360B, follow all general
instructions as noted for unit sizes 30RB160,170. For modules,
360A, 390A, and 390B follow instructions for 30RB190. See
Table 1 for a listing of unit sizes and modular combinations.
WARNING
Electrical shock can cause personal injury and death. Shut
off all power to this equipment during installation. There
may be more than one disconnect switch. Tag all discon-
nect 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 outdoors in
accordance with the latest edition of ANSI/ASHRAE
(American National Standards Institute/American Society
of Heating, Refrigeration 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 recom-
mended 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, always run
fluid through heat exchanger when adding or removing
refrigerant charge. Use appropriate brine solutions in cooler
fluid loop to prevent the freezing of brazed plate heat
exchanger, optional hydronic section and/or interconnecting
piping when the equipment is exposed to temperatures
below 32 F (0° C). Proof of flow switch and strainer are
factory installed on all models. Do NOT remove power
from this chiller during winter shutdown periods without
taking precaution to remove all water from heat exchanger
and optional hydronic system. Failure to properly protect
the system from freezing may constitute abuse and may
void warranty.
CAUTION
Compressors and optional hydronic system pumps require
specific rotation. Test condenser fan(s) first to ensure
proper phasing. Swap any two incoming power leads to
correct condenser fan rotation before starting any other
motors. Operating the unit without testing the condenser
fan(s) for proper phasing could result in equipment
damage.
CAUTION
Refrigerant charge must be removed slowly to prevent loss
of compressor oil that could result in compressor failure.
CAUTION
Puron®refrigerant (R-410A) systems operate at higher
pressures than standard R-22 systems. Do not use R-22 ser-
vice equipment or components on Puron refrigerant equip-
ment. If service equipment is not rated for Puron
refrigerant, equipment damage or personal injury may
result.

3
NOTE: The nameplate for modular units contains only the first
two digits in the model number. For example, 315A and 315B
nameplates read 31A and 31B.
Table 1 — Modular Unit Combinations
NOTE: An “A” in the model number indicates the design series.
Conventions Used in This Manual — The follow-
ing conventions for discussing configuration points for the
local display (scrolling marquee or Navigator™ accessory)
will be used in this manual.
Point names will be written with the mode name first, then
any sub-modes, then the point name, each separated by an
arrow symbol (. Names will also be shown in bold
and italics. As an example, the Lead/Lag Circuit Select Point,
which is located in the Configuration mode, Option sub-mode,
would be written as Configuration OPTNLLCS.
This path name will show the user how to navigate through
the local display to reach the desired configuration. The user
would scroll through the modes and sub-modes using the
and keys. The arrow symbol in the path name repre-
sents pressing to move into the next level of the
menu structure.
When a value is included as part of the path name, it will be
shown at the end of the path name after an equals sign. If the
value represents a configuration setting, an explanation will
be shown in parenthesis after the value. As an example,
ConfigurationOPTNLLCS = 1 (Circuit A leads).
Pressing the and keys simultaneously
will scroll an expanded text description of the point name or
value across the display. The expanded description is shown in
the local display tables but will not be shown with the path
names in text.
The CCN (Carrier Comfort Network®) point names are also
referenced in the local display tables for users configuring the
unit with CCN software instead of the local display. The CCN
tables are located in Appendix B of the manual.
Basic Control Usage
SCROLLING MARQUEE DISPLAY — The scrolling mar-
quee display is the standard interface display to the ComfortLink
Control System for 30RB units. 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 the highest
operating level is displayed to move through the top 11 mode
levels indicated by LEDs (light-emitting diodes) on the left side
of the display. See Fig. 1.
Once within a mode or sub-mode, pressing the
and keys simultaneously will put the scrolling
marquee display into expanded text mode where the full mean-
ing of all sub-modes, items and their values can be displayed
for the current selection. Press the and
keys to return the scrolling marquee display 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 ex-
panded text mode.
NOTE: When the Language Selection (Configuration

DISP  LANG), variable is changed, all appropriate display
expansions will immediately change to the new language. No
power-off or control reset is required when reconfiguring
languages.
When a specific item is located, the item name alternates
with the value. Press the key at a changeable item
and the value will be displayed. Press again and the
value will begin to flash indicating that the value can be
changed. 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 pass-
word protected. The words ‘PASS’ and ‘WORD’ will alternate
on the display when required. The default password is 0111.
Press and the 1111 password will be displayed. Press
again and the first digit will begin to flash. Use the
arrow keys to change the number and press to accept
the digit. Continue with the remaining digits of the password.
The password can only be changed through CCN operator in-
terface software such as ComfortWORKS®, ComfortVIEW™
and Service Tool.
See Table 2 and Appendix A for further details.
ACCESSORY NAVIGATOR™ DISPLAY MODULE —
The Navigator module provides a mobile user interface to the
ComfortLink™ control system, which is only available as a
field-installed accessory. 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 to move through the top 11 mode levels indicated
by LEDs on the left side of the display. See Fig. 2.
Once within a Mode or sub-mode, a “>” indicates the cur-
rently selected item on the display screen. Pressing the
and keys simultaneously will put the Nav-
igator module into expanded text mode where the full meaning
of all sub-modes, items and their values can be displayed. Press-
ing 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
UNIT SIZE MODULE A MODULE B
30RBA315 30RBA160 30RBA160
30RBA330 30RBA170 30RBA160
30RBA345 30RBA170 30RBA170
30RBA360 30RBA190 30RBA170
30RBA390 30RBA190 30RBA190
ENTER
ESCAPE
ENTER
ENTER
ESCAPE
ESCAPE
ENTER
ESCAPE
ENTER
ESCAPE
ESCAPE
Run Status
Service Test
Temperature
Pressures
Setpoints
Inputs
Outputs
Configuration
Time Clock
Operating Modes
Alarms
Alarm Status
ENTER
MODE
ESCAPE
Fig. 1 — Scrolling Marquee Display
ENTER
ENTER
ENTER
ENTER
ENTER
ESCAPE
ENTER
ENTER
ENTER
ENTER
ESCAPE
ESCAPE
ENTER
ESCAPE
ENTER
ESCAPE

4
in Run Status
 VIEW). In addition, the password will be dis-
abled, 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.
NOTE: When the Language Selection (Configuration

DISP  LANG), variable is changed, all appropriate display
expansions will immediately change to the new language. No
power-off or control reset is required when reconfiguring
languages.
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 val-
ue 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 pass-
word 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 the number
and press to enter the digit. Continue with the re-
maining digits of the password. The password can only be
changed through CCN operator interface software such as
ComfortWORKS, ComfortVIEW and Service Tool.
Adjusting the Contrast — The contrast of the display can be
adjusted to suit ambient conditions. To adjust the contrast of
the Navigator module, press the key until the dis-
play reads, “Select a menu item.” Using the arrow keys move
to the Configuration mode. Press to obtain access to
this mode. The display will read:
> TEST OFF
METR OFF
LANG ENGLISH
Pressing 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. 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, press the key until the display
reads, “Select a menu item.” Using the arrow keys move to the
Configuration mode. Press to obtain access to this
mode. The display will read:
> TEST OFF
METR OFF
LANG ENGLISH
Pressing will cause the “OFF” to flash. Use the up
or down arrow keys 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 simultane-
ously allows the user to adjust the display 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.
Table 2 — ComfortLink™ Display Menu Structure
ESCAPE
ENTER
ENTER
ENTER
ENTER
ESCAPE
ENTER
ESCAPE
ENTER
ENTER
ENTER
ENTER
ESCAPE
ENTER
ESCAPE
ENTER
ENTER
ENTER
ENTER
MODE
RUN
STATUS
SERVICE
TEST TEMPERATURE PRESSURE SET POINTS INPUTS OUTPUTS CONFIGURATION TIME CLOCK
OPERATING
MODES ALARMS
Auto
Display
(VIEW)
Manual
Test Mode
(TEST)
Unit
Temperatures
(UNIT)
Circuit A
Pressures
(PRC.A)
Cooling
Setpoints
(COOL)
General
Inputs
(GEN.I)
Circuit A
Outputs
(CIR.A)
Display
Configuration
(DISP)
Time of Day
(TIME)
Operating
Control
Typ e
(SLCT)
Reset
Current
Alarms
(R.ALM)
Remote
User
Interface
(R.CCN)
Quick
Te s t
Mode
(QUIC)
Circuit A
Temperatures
(CIR.A)
Circuit B
Pressures
(PRC.B)
Heating
Setpoints
(HEAT)
Circuit B
Outputs
(CIR.B)
Unit
Configuration
(UNIT)
Day, Date
(DATE)
Operating
Modes
(MODE)
Current
Alarms
(ALRM)
Machine
Starts/
Hours
(RUN)
Circuit B
Temperatures
(CIR.B)
Circuit C
Pressures
(PRC.C)
Misc.
Setpoints
(MISC)
Circuit C
Outputs
(CIR.C)
Service
Configurations
(SERV)
Schedule 1
(SCH1)
Alarm
History
(H.ALM)
Compressor
Run Hours
(HOUR)
Circuit C
Temperatures
(CIR.C)
General
Outputs
(GEN.O)
Options
Configuration
(OPTN)
Schedule 2
(SCH2)
Compressor
Starts
(STRT)
Reset, Demand
Limit, Master/Slave
(RSET)
Holidays
(HOLI)
Fan Run
Hours
(FAN)
Service
Maintenance
Configuration
(MCFG)
Compressor
Disable
(CP.UN)
Predictive
Maintenance
(MAIN)
Software
Versions
(VERS)

5
CONTROLS
General — The 30RB air-cooled liquid chillers contain 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 sec-
tions. All machines have at the very least a main base board
(MBB), scrolling marquee display, electric expansion valve
board (EXV), fan board, one scroll protection module (SPM)
per compressor, Emergency On/Off switch, an Enable-Off- Re-
mote Contact switch and a reverse rotation board.
Main Base Board (MBB) — The MBB is the heart of
the ComfortLink control system, which contains the major
portion of operating software and controls the operation of the
machine. See Fig. 3. 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 to
control the machine are located on other boards, but are trans-
mitted 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. Con-
nections 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.
Run Status
Service Tes t
Tem peratures
Pressures
Setpoints
Inputs
Outputs
Configuration
Time Clock
Operating Modes
Alarms
ENTER
ESC
MODE
Alarm Status
ComfortLink
Fig. 2 — Accessory Navigator Display Module
221
221
221
221
195
195
195
195
195
195
195
CH1 CH2 CH3 CH4
CH11 CH12
LOCATION OF
SERIAL NUMBER
CH13 CH14 CH
15A
J4
ANALOG
INPUTS
J3
J2C
J2B
J15
J1A
J9D
+ G –
DISCRETE
INPUTS
J5A
C
16A
CH
15B
C
C
CH16B
11 C16
J2A
TR1 TR2 TR3 TR4 TR5
CH19 CH20 CH21 CH22 CH23 CH24 CH25 CH26
J8
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 12/11
J10 19 J12 J13 + G -
STATUS
J9A
K1 K2
D15
J6
CCN
CH10
+ G –
SIO
(LEN)
J9C J9B
+ G –
Fig. 3 — Main Base Board

6
Table 3 — Main Base Board Inputs and Outputs
* Controls discharge and liquid line isolation soleniods for 30RB120-190 brine units only.
DESCRIPTION INPUT/OUTPUT I/O TYPE SCROLLING MARQUEE
POINT NAME
CONNECTION POINT
Pin Notation
Power (24 vac supply) —— —
MBB-J1, MBB-J1A,
MBB-J1B
11 24 vac
12 Ground
Local Equipment Network —— —
MBB-J9A, MBB-J9B,
MBB-J9C, MBB-J9D
+
G
-
Carrier Comfort Network®
(CCN) —— —
MBB-J12
+
G
-
External Chilled
Water Pump Interlock PMPI Switch INPUTS
 GEN.I  LOCK MBB-J4-CH15A
Chilled Water Flow Switch CWFS Switch INPUTS
 GEN.I  LOCK MBB-J5A-CH15B
15B
Demand Limit Switch #1 Demand Limit SW1 Switch INPUTS
 GEN.I  DLS1 MBB-J4-CH13
Circuit A Discharge
Pressure Transducer DPTA Pressure Transducer (0-5 VDC) PRESSURE
 PRC.A  DP.A
MBB-J7A-CH6
5V 5 vdc Ref.
S Signal
R Return
Circuit B Discharge
Pressure Transducer DPTB Pressure Transducer
(0-5 VDC) PRESSURE
 PRC.B  DP.B
MBB-J7C-CH8
5V 5 vdc Ref.
S Signal
R Return
Dual Chiller
LWT Thermistor DUAL 5k Thermistor TEMPERATURE
 UNIT  CHWS MBB-J6-CH3
Dual Set Point Input Dual Set Point Switch INPUTS
 GEN.I  DUAL MBB-J4-CH12
Entering Water Thermistor EWT 5k Thermistor TEMPERATURE
 UNIT  EWT MBB-J6-CH2
Leaving Water Thermistor LWT 5k Thermistor TEMPERATURE
 UNIT  LWT MBB-J6-CH1
Outdoor Air Thermistor OAT 5k Thermistor TEMPERATURE
 UNIT  OAT MBB-J6-CH4
Pump #1 Interlock
Pump #2 Interlock
PMP1
PMP2 Switch INPUTS
 GEN.I  PUMP
MBB-J5C-CH18
18
C
Reverse Rotation Board Reverse Rotation Board Switch INPUTS
 GEN.I  ELEC MBB-J5A-CH16B
16B
Circuit A Suction
Pressure Transducer SPTA Pressure Transducer (0-5 VDC) PRESSURE
 PRC.A  SP.A
MBB-J7B-CH7
5V 5 vdc Ref.
S Signal
R Return
Circuit B Suction
Pressure Transducer SPTB Pressure Transducer (0-5 VDC) PRESSURE
 PR.B  SP.B
MBB-J7D-CH9
5V 5 vdc Ref.
S Signal
R Return
Unit Status Remote Contact-Off-Enable Switch INPUTS
 GEN.I  ONOF MBB-J4-CH11
Alarm Relay ALM R Relay OUTPUTS
 GEN.O  ALRM MBB-J3-CH24
Alert Relay ALT R Relay OUTPUTS
 GEN.O  ALRT MBB-J3-CH25
Cooler Heater CL-HT TRIAC OUTPUTS
 GEN.O  CO.HT MBB-J2B-CH21
Circuit A Minimum
Load Control* MLV-A TRIAC OUTPUTS
 CIR.A  HGB.A MBB-J2C-CH22
Circuit B Minimum
Load Control* MLV-B TRIAC OUTPUTS
 CIR.B  HGB.B MBB-J2C-CH23
Pump #1 Starter PMP1 TRIAC OUTPUTS
 GEN.O  PMP.1 MBB-J2A-CH19
Pump #2 Starter PMP2 TRIAC OUTPUTS
 GEN.O  PMP.2 MBB-J2A-CH20
Ready Relay RDY R Relay OUTPUTS
 GEN.O  REDY MBB-J3-CH26

7
Scroll Protection Module (SPM) — There is one
SPM per compressor and it is responsible for controlling that
compressor. See Fig. 4. The device controls the compressor
contactor and the compressor crankcase heater. The SPM mod-
ule also monitors the compressor motor temperature, and cir-
cuit high pressure switch. The SPM 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). See below for SPM board address infor-
mation. See Table 4 for SPM inputs and outputs.
SPM-A1 DIP
Switch 12 3 456 7 8
Address: ON OFF OFF OFF ON OFF OFF OFF
SPM-A2 DIP
Switch 123 456 7 8
Address: OFF ON OFF OFF ON OFF OFF OFF
SPM-A3 DIP
Switch 1 23456 7 8
Address: OFF OFF ON OFF ON OFF OFF OFF
SPM-A4 DIP
Switch 1 2 3456 7 8
Address: OFF OFF OFF ON ON OFF OFF OFF
SPM-B1 DIP
Switch 12 3 4 567 8
Address: ON OFF OFF OFF OFF ON OFF OFF
SPM-B2 DIP
Switch 12345678
Address: OFF ON OFF OFF OFF ON OFF OFF
SPM-B3 DIP
Switch 1 234 567 8
Address: OFF OFF ON OFF OFF ON OFF OFF
SPM-B4 DIP
Switch 1 2 34567 8
Address: OFF OFF OFF ON OFF ON OFF OFF
SPM-C1 DIP
Switch 12345678
Address: ON OFF OFF OFF OFF OFF ON OFF
SPM-C2 DIP
Switch 12345678
Address: OFF ON OFF OFF OFF OFF ON OFF
SPM-C3 DIP
Switch 1 234 5 678
Address: OFF OFF ON OFF OFF OFF ON OFF
SPM-C4 DIP
Switch 1 2 345 678
Address: OFF OFF OFF ON OFF OFF ON OFF
12345678
ON
103
103
LOCATION OF
SERIAL NUMBER
QC1
QC2
JP4 JP1
JP2
JP5
JP6
D4
C19
D6 D5
Q4
D7
Q5
D9 U3
Q6 D8 Q3
SMD
JP3
F1
C46 D13 D14
LED1 LED2
Fig. 4 — Scroll Protection Module

8
Electronic Expansion Valve (EXV) Board — At
least one EXV board is used in all machines. There is one EXV
board for 2 circuit machines. Three circuit machines have two
EXV boards. See Fig. 5. The board is responsible for monitor-
ing the return gas temperature thermistors. The board also
signals the EXV motors to open or close. The electronic expan-
sion 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 for EXV1 and EXV2. See Tables 5 and 6 for EXV
inputs and outputs.
Table 4 — Scroll Protection Module Inputs and Outputs*
* “x” denotes the circuit, A, B or C. “n” denotes the compressor number, 1, 2, 3, or 4.
Table 5 — EXV1 Board Inputs and Outputs
EXV1 DIP Switch 1 2 3 4 5 6 7 8
Address: ON ON ON ON ON ON OFF ON
EXV2 DIP Switch 1 2 3 4 5 6 7 8
Address: OFF ON ON ON ON ON OFF ON
DESCRIPTION INPUT/OUTPUT I/O TYPE SCROLLING MARQUEE
POINT NAME
CONNECTION POINT
Pin Notation
Power (24 vac supply) —— —
SPM-xn-J1
QC1 24 vac
QC2 Ground
Local Equipment Network —— —
SPM-xn-JP1
1+
2G
3-
SPM-xn-JP2
2+
3G
4-
Circuit x High Pressure Switch HPS-x Switch Not available
SPM-xn-JP3
1
2
Compressor xn Motor Temperature MTR-xn PTC Thermistor Not available
SPM-xn-JP4
1
2
Compressor xn Contactor Cxn Relay OUTPUTS
 CIR.x  CP.xn
SPM-xn-JP5
1
2
Crankcase Heater CCH Relay OUTPUTS
 CIR.x  HT.xn
SPM-xn-JP6
1
2
Circuit x High Pressure Switch HPS-x Switch Not available SPM-xn-JP2
1
DESCRIPTION INPUT/OUTPUT I/O TYPE SCROLLING MARQUEE
POINT NAME
CONNECTION POINT
Pin Notation
Power (24 vac supply) —— —
EXV1-J1
11 24 vac
12 Ground
Local Equipment Network —— —
EXV1-J4
1+
2G
3–
Circuit A Suction Gas Thermistor SGTA 5k Thermistor TEMPERATURE
 CIR.A  SGT.A EXV1-J3
THA
Circuit B Suction Gas Thermistor SGTB 5k Thermistor TEMPERATURE
 CIR.B  SGT.B EXV1-J3
THB
Circuit A EXV EXV-A Stepper Motor OUTPUTS
 CIR.A  EXV.A
EXV1-J2A
1
2
3
4
Circuit B EXV EXV-B Stepper Motor OUTPUTS
 CIR.B  EXV.B
EXV1-J2B
1
2
3
4

9
Fan Boards — At least one fan board is installed in each
unit. See Fig. 6 and 7. There are two types of fan boards, with
and without an analog output signal for the low ambient head
pressure control fan speed controllers. If a unit does not have
low ambient head pressure control installed, it will not have the
analog connection terminals. The fan board responds to com-
mands from the MBB and sends the MBB the results of the
channels it monitors via the LEN. See below for fan board 1, 2
and 3 DIP switch addresses. See Tables 7-9 for inputs and
outputs.
12345678
ON
100
100
257-01
712
100K
100K
100
12345
321
-G+
J3
12345
J2A EXVA J2B EXVB
24VAC
STAT U S
MOV1
LOCATION OF
SERIAL NUMBER
4321
THA THB
D4
D6
J1
C15
C16
D5
U5
Q2 Q1
L4
U4
12/11
C17
+
Q45
Q42Q37
G2
Q35
Q25
Q27
Q30
Q20 Q22
Q17 Q15
Q12
Q10
C10
Q7
S1
C11
U2
D2
L1
U1
C37C39
SB
D15
U6
C25
C49
Q4
Q5
L2 R2
R3L3D1
R9
TEMP
D29 D9 D8
SI0
(LEN)
COMM J4
Fig. 5 — EXV Board
FAN BOARD 1
DIP Switch 123 45678
Address: OFF ON OFF OFF ON OFF ON OFF
FAN BOARD 2
DIP Switch 12345678
Address: ON ON OFF OFF ON OFF ON OFF
FAN BOARD 3
DIP Switch 1 2345678
Address: OFF OFF ON OFF ON OFF ON OFF

10
Table 6 — EXV2 Inputs and Outputs
NOTE: EXV2 inputs and outputs are only used on 30RB210-300.
DESCRIPTION INPUT/OUTPUT I/O TYPE SCROLLING MARQUEE
POINT NAME
CONNECTION POINT
Pin Notation
Power (24 vac supply) —— —
EXV2-J1
11 24 vac
12 Ground
Local Equipment Network —— —
EXV2-J4
1+
2G
3–
Circuit C Suction Gas Thermistor SGTC 5k Thermistor TEMPERATURE
 CIR.C  SGT.C EXV2J3
THA
Circuit C EXV EXV-C Stepper Motor OUTPUTS
 CIR.C  EXV.C
EXV2-J2A
1
2
3
4
12345678
ON
100K
100K
100K
CH1 CH2 CH3CH4 CH5 CH6 CH7 CH8
TR1 TR2 TR3TR4 TR5 TR6 TR7 TR8
STAT U SSIO (LEN)
LOCATION OF
SERIAL NUMBER
24 VAC
CH13CH14
J9
J1
CH9 CH10 CH11 CH12
JP2
C61
CH13
D12 JP1
L3
L5
U21
L2
D6
D5
Q5 Y1
D7
D8
S1
D3
U1
Q1
U5
U6
U7
U8
U9
Q10
Q11
U10
J4
J3
J2
U4
U2
Q12
Q60
32 1
– G +
32 1
– G +
DIP SWITCH
Fig. 6 — Fan Board (AUX 1) with Low Ambient Temperature Head Pressure Control