Bard MULTI-TEC W18AAPA Operating instructions

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Page 1 of 28
Bard Manufacturing Company, Inc.
Bryan, Ohio 43506
www.bardhvac.com
Manual : 2100-665G
Supersedes: 2100-665F
Date: 10-11-18
NOTE: LC6000 controller is required for operation when multiple MULTI-TEC
wall-mount air conditioners are used.
SERVICE INSTRUCTIONS
MULTI-TEC®
WALL-MOUNT AIR CONDITIONER
Part of the Bard Free Cooling System
Models:
W18AAPA
W24AAPA
W24AAPB
W24AAPC
W30AAPA
W30AAPB
W30AAPC
W36AAEA
W36AAEB
W36AAEC
W36AAMA
W36AAMB
W36AAMC
W36AAPA
W36AAPB
W36AAPC
W42AAEA
W42AAEB
W42AAEC
W42AAPA
W42AAPB
W42AAPC
W48AAEA
W48AAEB
W48AAEC
W48AAEQ
W48AAMA
W48AAMB
W48AAMC
W48AAPA
W48AAPB
W48AAPC
W48AAPQ
W18LAPA
W24LAPA
W24LAPB
W30LAPA
W30LAPB
W30LAPC
W36LAPA
W36LAPB
W36LAPC
W42LAPA
W42LAPB
W42LAPC
W48LAPA
W48LAPB
W48LAPC
W48LAPQ
W60LAPA
W60LAPB
W60LAPC
W60LAPQ
W72LBPA
W72LBPB
W72LBPC
W72LBPQ
W60AAEA
W60AAEB
W60AAEC
W60AAEQ
W60AAMA
W60AAMB
W60AAMC
W60AAPA
W60AAPB
W60AAPC
W60AAPQ
W72ABEA
W72ABEB
W72ABEC
W72ABEQ
W72ABMA
W72ABMB
W72ABMC
W72ABPA
W72ABPB
W72ABPC
W72ABPQ

Manual 2100-665G
Page 2 of 28
FIGURES AND TABLES
Figure 1 MULTI-TEC Wall-Mount Unit Model
Nomenclature ........................................3
Figure 2 TEC-EYE Display and Interface ................6
Figure 3 TEC-EYE Connection to Unit Control ........6
Figure 4 Quick Menu Icons...................................7
Figure 5 Cooling and Heating Setpoints .................8
Figure 6 Last 24 Hour Tracking.............................8
Figure 7 Last 24 Hour Tracking.............................8
Figure 8 Software Version Information ...................8
Figure 9 Alarm Log Screen Breakdown ..................8
Figure 10 Unit Configuration ..................................9
Figure 11 Executing Run Test.................................9
Figure 12 Alarm Screen Breakdown.......................11
Figure 13 Clearing Alarms ....................................11
Figure 14 Clearing Alarm Logs..............................12
Figure 15 Adjusting Mixed Air Alarm Values...........12
Figure 16 Adjusting Damper Alarm Values .............13
Figure 17 Adjusting Freeze Alarm Values ...............13
General Information ...........................................3
Free Cooling Unit System.......................................3
Wall-Mount Air Conditioner Units............................3
General ................................................................3
Shipping Damage..................................................4
Additional Publications..........................................4
Using the TEC-EYETM ...........................................6
TEC-EYE Hand-Held Diagnostic Tool .......................6
TEC-EYE Menu Structure......................... 7
TEC-EYE Acronyms ................................. 7
Status Screen......................................... 7
Quick Menu............................................ 8
Setpoints ......................................... 8
Information ...................................... 8
Data (Alarm) Log............................... 8
Menu Screens and Password Levels .......... 9
Addressing Wall-Mount Units ................... 9
Setting Unit Zone ................................... 9
Additional Features ................................. 9
Model/Serial Number Retain Feature .. 9
Time/Date/Timezone Sync .................. 9
Executing a Run Test............................... 9
Parameter Description ..................... 10
Changing Free Cooling Type ................... 10
Alarms.................................................................11
Acknowledging/Clearing Alarms.................... 11
Clearing Alarms .................................... 11
Clearing Alarm Logs .............................. 12
Alarm Adjustment....................................... 12
Mixed Air Alarm.................................... 12
Refrigerant Low Pressure ....................... 12
Refrigerant High Pressure ...................... 13
Economizer Damper .............................. 13
Freezestat ............................................ 13
Control Operation .............................................14
On/Off Control ............................................ 14
Fan Control ................................................ 14
CONTENTS
Temperature Control.................................... 14
Cooling Sequence – Economizer Available .. 14
Cooling Sequence –
Economizer Not Available ...................... 14
Heating Sequence................................. 15
Free Cooling............................................... 16
Economizer Disable............................... 16
Economizer Enable ............................... 16
None ............................................. 16
Drybulb Only .................................. 16
Temperature and Humidity (Default) . 16
Enthalpy ........................................ 16
Economizer Modulation ......................... 16
Compressor ................................................ 17
Enable................................................. 17
Delays and Run Time............................. 17
Electric Reheat Dehumidification ................. 17
Mechanical Dehumidification....................... 18
General Refrigerant Information...................19
General ..................................................... 19
Topping Off System Charge.......................... 19
Safety Practices.......................................... 19
R410A Refrigerant Charge........................... 19
Componentry .....................................................21
High Pressure Switch .................................. 21
Three Phase Scroll Compressor
Start Up Information ................................... 21
Phase Monitor ............................................ 21
Condenser Fan Operation............................. 21
Low Ambient Control................................... 21
Compressor Control Module ......................... 22
Pressure Service Ports................................. 23
Outdoor Fan Motor...................................... 23
Maintenance and Troubleshooting ...............26
Standard Maintenance Procedures ............... 26
Removal of Fan Shroud ............................... 26
Troubleshooting Nidec SelecTech ECM Motors .. 27
Figure 18 Wall-Mount Unit Cooling Staging............14
Figure 19 Adjusting Cooling Differential Values ......15
Figure 20 Adjusting Heating Differential Values......15
Figure 21 Wall-Mount Unit Heating Staging ...........15
Figure 22 Economizer A4 Screen ..........................16
Figure 23 Economizer A5 Screen ..........................16
Figure 24 Adjusting Damper Modulation Value .......17
Figure 25 Dehumidification Control.......................17
Figure 26 Wall-Mount Unit Control Board ..............18
Figure 27 8201-164 Compressor Control Module ...22
Figure 28 Fan Blade Setting.................................23
Figure 29 Motor Connections................................27
Figure 30 Motor Connections................................28
Table 1 Wall-Mount Unit Status Messages ............7
Table 2 LC1000/TEC-EYE Passwords (Defaults) ....9
Table 3 Wall-Mount Unit Alarm Index.................11
Table 4 Cooling Pressures .................................20
Table 5A Optional Accessories – Right Hand.........24
Table 5B Optional Accessories – Left Hand...........25

Manual 2100-665G
Page 3 of 28
GENERAL INFORMATION
Reference Supplemental Instructions
7960-801 for complete details.
Free Cooling System
The Bard free cooling unit system is composed of
MULTI-TEC wall-mounted air conditioners matched
with an LC6000 supervisory controller or Bard th-
Tune stand-alone controller. If only one wall-mounted
air conditioner is being used, it can be matched with
either the LC6000 supervisory controller or a th-Tune
stand-alone controller. If more than one wall-mount
unit is installed, the LC6000 controller must be
matched with the air conditioning units. The wall
mounts are specifically engineered for telecom/motor
control center rooms.
NOTE: The LC6000 supervisory controller and MULTI-
TEC wall-mount units are designed specifically
to work together. The controller cannot
run other brands of systems, nor can other
controllers run the MULTI-TEC wall-mount
units. They are a complete system, and must
be used together.
Wall-Mount Air Conditioner Units
The MULTI-TEC units are designed to supply full
rated cooling airflow in free cooling mode with ability
to exhaust the same amount through the unit itself
without any additional relief openings in the shelter. In
the event that free cooling operation cannot satisfy the
load requirements, mechanical cooling will be utilized
to assist in cooling the shelter.
MULTI-TEC units are available with electric heat and
dehumidification options.
General
The equipment covered in this manual is to be installed
by trained, experienced service and installation
technicians.
The refrigerant system is completely assembled and
charged. All internal wiring is complete.
The unit is designed for use with or without duct work.
Flanges are provided for attaching the supply and return
ducts.
These instructions explain the recommended method
to install the air cooled self-contained unit and the
electrical wiring connections to the unit.
These instructions and any instructions packaged with
any separate equipment required to make up the entire
air conditioning system should be carefully read before
beginning the installation. Note particularly any tags
and/or labels attached to the equipment.
While these instructions are intended as a general
recommended guide, they do not supersede any national
and/or local codes in any way. Authorities having
jurisdiction should be consulted before the installation is
made. See ADDITIONAL PUBLICATIONS on page 4
for information on codes and standards.
FIGURE 1
MULTI-TEC Wall-Mount Unit Model Nomenclature
CONTROL MODULES
E – Low Ambient Control
C – Low Ambient Control
& Crank Case Heater
COIL OPTIONS
X–Standard
1–Phenolic Coated Evaporator
2–Phenolic Coated Condenser
3–Phenolic Coated Evaporator
and Condenser
P – PLC Logic Board
E – PLC Logic Board w/Electric Reheat
M – PLC Logic Board w/Mechanical Dehumidification 
W 36 A A P A 10 5 X X X X E
MODEL SERIES
REVISION
KW
A – Right Hand
L – Left Hand
FILTER OPTIONS
X–1" Throwaway (Standard)
W–1" Washable
P–2" Pleated (MERV 8)
SUPPLY AIR OUTLET
X–Front (Standard)
COLOR OPTIONS
X–Beige (Standard)
1–White
4–Buckeye Gray
18 –1½ Ton
24 –2 Ton
30 –2½ Ton
36 –3 Ton
CAPACITY
42 –3½ Ton
48 –4 Ton
60 –5 Ton
72 –6 Ton
VENTILATION OPTIONS
B–Blank-off Plate
5–Economizer
A–230/208/60/1
B–230/208/60/3
C–460/60/3
D–240/220/50/1
VOLTS & PHASE
E–240/220/50/3
or 220/200/50/3
F–415/380/50/3
Q–575/60/3

Manual 2100-665G
Page 4 of 28
Sizing of systems for proposed installation should be
based on heat loss and heat gain calculations made
according to methods of Air Conditioning Contractors
of America (ACCA). The air duct should be installed
in accordance with the Standards of the National
Fire Protection Association for the Installation of Air
Conditioning and Ventilating Systems of Other Than
Residence Type, NFPA No. 90A, and Residence Type
Warm Air Heating and Air Conditioning Systems, NFPA
No. 90B. Where local regulations are at a variance with
instructions, installer should adhere to local codes.
Shipping Damage
Upon receipt of equipment, the cartons should be
checked for external signs of shipping damage. If
damage is found, the receiving party must contact
the last carrier immediately, preferably in writing,
requesting inspection by the carrier’s agent.
These units must remain in upright position at all times.
Additional Publications
These publications can help when installing the
furnace. They can usually be found at the local library
or purchased directly from the publisher. Be sure to
consult the current edition of each standard.
National Electrical Code ......................ANSI/NFPA 70
Standard for the Installation of Air Conditioning
and Ventilating Systems ...................ANSI/NFPA 90A
Standard for Warm Air Heating
and Air Conditioning Systems ............ANSI/NFPA 90B
Load Calculation for Residential Winter
and Summer Air Conditioning ............. ACCA Manual J
Duct Design for Residential Winter and Summer
Air Conditioning and Equipment Selection
....................................................... ACCA Manual D
For more information, contact these publishers:
Air Conditioning Contractors of America (ACCA)
1712 New Hampshire Ave. N.W.
Washington, DC 20009
Telephone: [phone] Fax: [phone]
American National Standards Institute (ANSI)
11 West Street, 13th Floor
New York, NY 10036
Telephone: [phone] Fax: [phone]
American Society of Heating, Refrigeration and Air
Conditioning Engineers, Inc. (ASHRAE)
1791 Tullie Circle, N.E.
Atlanta, GA 30329-2305
Telephone: [phone] Fax: [phone]
National Fire Protection Association (NFPA)
Batterymarch Park
P. O. Box 9101
Quincy, MA 02269-9901
Telephone: [phone] Fax: [phone]
ANSI Z535.5 Definitions:
DANGER: Indicate[s] a hazardous situation which, if
not avoided, will result in death or serious injury. The
signal word “DANGER” is to be limited to the most
extreme situations. DANGER [signs] should not be used
for property damage hazards unless personal injury risk
appropriate to these levels is also involved.
WARNING: Indicate[s] a hazardous situation which,
if not avoided, could result in death or serious injury.
WARNING [signs] should not be used for property
damage hazards unless personal injury risk appropriate
to this level is also involved.
CAUTION: Indicate[s] a hazardous situation which, if
not avoided, could result in minor or moderate injury.
CAUTION [signs] without a safety alert symbol may be
used to alert against unsafe practices that can result in
property damage only.
NOTICE: [this header is] preferred to address practices
not related to personal injury. The safety alert symbol
shall not be used with this signal word. As an
alternative to “NOTICE” the word “CAUTION” without
the safety alert symbol may be used to indicate a
message not related to personal injury.

Manual 2100-665G
Page 5 of 28
Electrical shock hazard.
Have a properly trained individual perform
these tasks.
Failure to do so could result in electric shock
or death.
!WARNING
Fire hazard.
Maintain minimum 1/4" clearance between the
supply air duct and combustible materials in
the rst 3' feet of ducting.
Failure to do so could result in re causing
damage, injury or death.
!WARNING
Heavy item hazard.
Use more than one person to handle unit.
Failure to do so could result in unit damage or
serious injury.
!WARNING
Cut hazard.
Wear gloves to avoid contact with sharp
edges.
Failure to do so could result in personal injury.
!CAUTION

Manual 2100-665G
Page 6 of 28
FIGURE 3
TEC-EYE Connection to Unit Control
Modular Phone Connector for
TEC-EYE Hand-Held Diagnostic Tool
USING THE TEC-EYETM
TEC-EYE Hand-Held Diagnostic Tool
The microprocessor control used in the MULTI-TEC
wall-mount air conditioners allows for complete control
and monitoring through the use of the provided TEC-
EYE hand-held monitor. This comprehensive service
tool utilizes the latest in state-of-the-art technology
including a large, easy-to-read backlit LCD graphic
display.
The menu driven interface provides users the ability
to scroll through two menu levels: Quick Menu and
Main Menu. The menus permit the user to easily view,
control and configure the unit.
The controller is completely programmed at the factory;
the default setpoints and their ranges are easily viewed
and adjusted from the TEC-EYE display. The program
and operating parameters are permanently stored
on FLASH-MEMORY in case of power failure. The
controller is designed to manage temperature levels to
a user-defined setpoint via control output signals to the
wall mount air conditioning system.
The TEC-EYE connects to the wall-mount unit control
board via an RJ11 modular phone connector as shown
in Figure 3.
ALARM KEY
Allows viewing of active alarms
Silences audible alarms
Resets active alarms
MENU KEY
Allows entry to Main Menu
ESCAPE KEY
Returns to previous menu level
Cancels a changed entry
UP KEY
Steps to next screen in the display menu
Changes (increases) the value of a modifiable field
ENTER KEY
Accepts current value of a modifiable field
Advances cursor
DOWN KEY
Steps back to previous screen in the display menu
Changes (decreases) the value of a modifiable field
FIGURE 2
TEC-EYE (Bard P/N 8301-059) Display and Interface (Status Screen Shown)
When not being used, the TEC-EYE hand-held
diagnostic tool should be stored inside or near the
LC6000 controller. Do not let the TEC-EYE leave the
shelter.
ALARM KEY
MENU KEY
ESCAPE KEY DOWN KEY
UP KEY
ENTER KEY

Manual 2100-665G
Page 7 of 28
It is important to check the software version
during installation to ensure that the latest
version has been installed. Current software
versions, change log and installation
instructions are available on the Bard website at
http://www.bardhvac.com/software-download/
NOTICE
TEC-EYE Menu Structure
Quick Menu
Data Log
Unit Information
Setpoints
Main Menu
System Configuration
Advanced System Configuration
I/O Configuration
On/Off
Alarm Logs
Settings
Logout
In addition to the menu structure above, there are also
Status and Alarm screens.
TEC-EYE Acronyms
MAT – Mixed air temperature
RAT – Return air temperature
OAT – Outdoor air temperature
OAH – Outdoor air humidity
Blower – Indoor Blower Status
Damper – Free cooling damper position status
C1 – Compressor activate status
H1 – Heater Stage 1 status
H2 – Heater Stage 2 status
ODP – Calculated outdoor dew point
FC – Free cooling status
RN – Component run time in minutes in last hour
ST – Number of start requests in last hour
Status Screen
The Status screen is the default start-up screen and
also the return screen after 5 minutes of no activity.
The screen can be accessed any time by pressing the
ESCAPE button repeatedly.
The wall-mount unit address is displayed in the upper
right corner on the Status screen (see Figure 2). The
Status screen also shows the current date, time, return
air temperature, mixed air temperature, outdoor air
temperature, outdoor humidity and outdoor dewpoint
conditions. Blower, damper and unit status are also
displayed. See Table 1 for MULTI-TEC wall-mount unit
status messages.
The Quick Menu is displayed in the bottom right corner
of the status screen (see Figure 2). Data Log, Unit
Information and Setpoints are available through the
Quick Menu. Pressing the UP or DOWN keys while on
the Status screen will change the Quick Menu icon
displayed (see Figure 4). Press the ENTER key when
the desired icon is displayed.
FIGURE 4
Quick Menu Icons
Data Log Unit Information Setpoints
Message Description
Stand Alone Orphan Mode Standby
th-TUNE Online th-TUNE Standby
LC Online LC Standby
Cont. Blower Continuous Blower Active
Off by th-TUNE Unit off by th-TUNE
Freecooling Freecooling Active
Optimized Cool Optimized Cooling Active
Cooling Cooling Active
Heating Heating Active
Active Dehum
Mechanical Dehumidification or
Electric Reheat Dehumidification
Active
Passive Dehum Economizer Disable/Enhanced
Latent Removal (if available)
Self Test Self Test Running
Off by Alarm Unit Off by Alarm Condition
Off by BMS Unit Off by BMS
Off by LC Unit Off by LC Master
Off by Keypad Unit Off by Keypad
Emergency Vent. Emergency Vent Mode Active
Emergency Cool Emergency Cool Mode Active
Emergency Off Emergency Off Mode Active
TABLE 1
Wall-Mount Unit Status Messages

Manual 2100-665G
Page 8 of 28
Quick Menu
Setpoints
If at any time the unit(s) loses communication with the
LC6000 controller, the unit(s) will go to stand alone
mode. The setpoints are synced with the LC6000 when
communication is established. The unit will save and
control to these values until communication is re-
established.
To change the cooling and heating setpoints:
1. From the Status screen, press UP or DOWN key
until Quick Menu displays Setpoints icon. Press
ENTER key.
2. Press ENTER key to scroll to the selected choice
(see Figure 5).
3. Press UP or DOWN key on desired value until value
displays correctly.
4. Press ENTER key to submit value and move to next
parameter.
5. Press ESCAPE key until Main Menu screen is
displayed.
Information
These screens show unit run hours, averages and
software version information (see Figures 6, 7 and 8).
FIGURE 9
Alarm Log Screen Breakdown
Alarm Log Number
Alarm Date/Time
Alarm Index
Number
Alarm Description
Alarm Event Type
(Start/Stop)
NOTE
Screenshots shown in this manual reflect
default settings (when applicable).
FIGURE 5
Cooling and Heating Setpoints
Data (Alarm) Log
The alarm log screens show a log of each alarm (see
Figure 9. There will be a log for when alarm occurred
and if the alarm auto clears, it will show when the
alarm cleared. See page 12 for instructions on clearing
the alarm logs.
FIGURE 6
Last 24 Hour Tracking
FIGURE 7
Last 24 Hour Tracking
FIGURE 8
Software Version Information

Manual 2100-665G
Page 9 of 28
Menu Screens and Password Levels
ASystem Config: User (2000)
BAdv Sys Config: Technician (1313)
CI-O Config: Technician (1313)
DOn/Off: User (2000)
EAlarm Logs: User (2000)
FSettings
Date/Time: Technician (1313)
Language: User (2000)
Network Config: Technician (1313)
Serial Ports: Technician (1313)
Initialization
Clear Logs: User (2000)
System Default: Engineer (9254)
Restart: User (2000)
Parameter Config: Engineer (9254)
Alarm Export: User (2000)
GLogout: Used to log out of the current password
level. Entering back into the menu requires
password.
Addressing Wall-Mount Units
Each unit must have a unique address for the system
to operate correctly with the LC controller (Ex: 1, 2, 3,
...14 depending on the number of units). The wall-
mount unit address is displayed in the upper right
corner on the Status screen on the TEC-EYE display
(see Figure 2 on page 6).
To change the unit address:
1. Press MENU key to access the Main Menu screen.
2. Press UP or DOWN keys and ENTER key to enter
USER password 2000.
3. Press UP or DOWN keys to scroll to Sys Config;
press ENTER key.
4. Press ENTER key to scroll to Unit Address (see
Figure 10).
5. Press UP or DOWN keys to change the address to a
value between 1 and 14.
User 2000
Technician 1313
Engineer 9254
Use UP or DOWN keys and ENTER key to enter password
TABLE 2
LC1000/TEC-EYE Passwords (Defaults)
NOTE: Each unit must have a unique address for the
communication to work properly. Bard also
recommends physically labeling each unit for
ease in identification.
Setting Unit Zone
To assign zones:
1. Press MENU key to access the Main Menu screen.
2. Press UP or DOWN keys and ENTER key to enter
USER password 2000.
3. Press UP or DOWN keys to scroll to Sys Config;
press ENTER key.
4. Press ENTER key to scroll to Unit Zone (see Figure
10).
5. Press UP or DOWN keys to change value to desired
zone.
Additional Features
Model/Serial Number Retain Feature
Model numbers and serial numbers will be retained
through most software updates. It still remains good
practice to verify the software version, model numbers
and serial numbers of any wall-mount unit after a
software update, as some functionality of the MULTI-
TEC wall-mount unit require a specific model number.
Time/Date/Timezone Sync
On MULTI-TEC wall-mount unit models with a software
version number MTS1000.2.0.0 and higher, when the
wall-mount unit is connected and correctly addressed
to a LC6000 supervisory controller, local time, date,
and timezone information will be synced from the
LC6000. This feature allows for faster set-up and
correct correlation between alarm logs.
Executing a Run Test
Execute a run test on each unit to verify the equipment
is functioning correctly.
1. Press MENU key to access the Main Menu screen.
2. Press UP or DOWN keys and ENTER key to enter
USER password 2000.
FIGURE 10
Unit Configuration

Manual 2100-665G
Page 10 of 28
3. Press UP or DOWN keys to scroll to Sys Config;
press ENTER key.
4. Press UP or DOWN keys to scroll to Run Test (A11)
screen.
5. Press ENTER key to scroll to Run Test Enable
parameter (see Figure 11).
6. Press UP or DOWN key to change value to ON. The
run test will begin.
FIGURE 11
Executing Run Test
Step Action Time Required
A Open economizer damper
Damper Time (150s)
B Close economizer Damper Damper Time (150s)
C Turn on compressor Heat/Cool Time (60s)
D Enable second stage Heat/Cool Time (60s)
E Open reheat valve Heat/Cool Time (60s)
F Turn all cooling off --
G Turn on electric heat
Heat/Cool Time (60s)
H Turn on electric heat stage 2 Heat/Cool Time (60s)
I Turn off all heating --
Parameter Description
Damper Time: This is the time (in seconds) allowed for
both the opening sequence and closing sequence.
Heat/Cool Time: This is the time (in seconds) allowed
for cooling sequence and heating sequence.
Status: This will display what the unit is doing as
the run test progresses. The following messages may
appear:
1. Not Active
2. Opening Damper
3. Closing Damper
4. Compressor Stage 1
5. Compressor Stage 2
6. Reheat Valve Open
7. Cooling Off
8. Electric Heat Stage 1
9. Electric Heat Stage 2
10. Heating Off
11. Run Test Stop
The unit will determine which items to test based on
the unit model number.
Identifying a Unit Address
The wall-mount unit address is displayed in the upper
right corner on the Status screen.
Changing Freecooling Type
The comparative enthalpy free cooling setting can be
changed to dry bulb free cooling using the TEC-EYE
hand-held diagnostic tool.
1. Press MENU key to access the Main Menu screen.
2. Press UP or DOWN keys and ENTER key to enter
USER password 2000.
3. Press UP or DOWN keys to scroll to Sys Config;
press ENTER key.
4. Press UP or DOWN keys to scroll to screen with
Freecooling Config heading.
5. Press ENTER key to scroll to parameter type.
6. Press UP or DOWN keys to change to desired
value.
7. Press ENTER key to save.
8. Press ESCAPE key until Main Menu screen is
displayed.

Manual 2100-665G
Page 11 of 28
ALARMS
NOTE: Screenshots shown in this manual reflect
default settings (when applicable).
Acknowledging/Clearing Alarms
Alarm conditions activate a red LED indicator that
backlights the ALARM function key. As an option, an
alarm condition may also be enunciated by an audible
alarm signal. An alarm is acknowledged by pressing
the ALARM key. This calls up alarm display screen(s)
that provide a text message detailing the alarm
condition(s)—as shown in Figure 12.
FIGURE 12
Alarm Screen Breakdown
Alarm Page
Alarm
Date/Time
Alarm Index
Number
Alarm
Description
Clearing Alarms
After an alarm condition has been corrected, the alarm
can be cleared/reset.
To clear alarms, press the ALARM key and the UP or
DOWN keys to scroll to the alarm reset screen (see
Figure 13). Hold down the ALARM key for 3 seconds
until the screen flashes. After the screen flashes, if all
alarms are able to be cleared, the screen should read
NO ALARMS. If there are still active alarms, the screen
will show the first indexed alarm.
FIGURE 13
Clearing Alarms
Index Alarm Log Export Variable PGD Displayed Alarm Description
0 Al_retain Error in the number of retain memory writings
1 Al_Err_retain_write Error in retain memory writings
2 Al_ReturnAIr1In Circuit 1 Return Air Temperature Sensor Alarm
3 Al_ReturnAir1High Circuit 1 High Return Air Temperature
6 Al_MixedAir1In Circuit 1 Mixed Air Temperature Sensor Alarm
7 Al_MixedAir1High Circuit 1 Mixed Air High Temperature
8 Al_MixedAir1Low Circuit 1 Mixed Air Low Temperature
18 Al_OutdoorAirIn Outdoor Air Temperature Sensor Alarm
19 Al_OutdoorHumIn Outdoor Air Humidity Sensor Alarm
36 Al_LowPress1 Circuit 1 Low Pressure
38 Al_HighPress1 Circuit 1 High Pressure
40 Al_Damper1FailedtoOpen Circuit 1 Damper Failed to Open
41 Al_Damper1FailedtoClose Circuit 1 Damper Failed to Close
48 Al_Freeze1In Circuit 1 Freeze Temperature Sensor Alarm
50 Al_Freeze1 Circuit 1 Freeze Condition
54 Al_Filter1 Filter 1 Dirty Filter Indicated
92 Al_Offline_THTN_1 Th-Tune Device Offline
93 Al_TempPrb_THTN_1 Th-Tune Temperature Probe Sensor Alarm
94 Al_HumPrb_THTN_1 Th-Tune Humidity Probe Sensor Alarm
95 Al_ClkBrd_THTN_1 Th-Tune Clock Board Alarm
TABLE 3
Wall-Mount Unit Alarm Index

Manual 2100-665G
Page 12 of 28
Alarm Adjustment
Mixed Air Alarm
The mixed air alarm is used to indicate proper
operation of the economizer. An alarm will be generated
when the mixed air temperature is above or below two
independent setpoints.
This alarm can be adjusted by changing the alarm
setpoints and/or delay. The differential low references
the economizer control setpoint. For example, if the
economizer setpoint is 55°F (as shown in Figure 24
on page 17) and the differential is set to 10, the lower
limit for the mixed air alarm would be 45°F. The high
differential references the outdoor air temperature
setpoint that enables the economizer. For example, if
the outdoor air temperature setpoint for economizer
enable is set to 65°F and the high alarm is set to 5, the
alarm would actuate at 70°F. The alarm also has a delay
to help reduce nuisance alarms. With the delay set to
120 seconds, either the high mixed air or low mixed air
alarm will need to be active for 120 seconds before an
alarm will be generated.
Clearing Alarm Logs
To clear the alarm logs:
1. Press MENU key to go to the Main Menu screen.
2. Press UP or DOWN keys and ENTER key to enter
TECHNICIAN password 1313.
3. Press UP or DOWN keys to scroll to Settings; press
ENTER key.
4. Press UP or DOWN keys to scroll to Initialization;
press ENTER key.
5. Press UP or DOWN keys to scroll to Initialization
1/5; press ENTER key.
6. Press ENTER key to scroll to Delete alarm logs?
(see Figure 14).
7. Press UP or DOWN key to change from NO to YES.
8. Press ENTER key to clear all alarm logs.
FIGURE 14
Clearing Alarm Logs
To adjust these values:
1. Press MENU key to go to the Main Menu screen.
2. Press UP or DOWN keys and ENTER key to enter
USER password 2000.
3. Press UP or DOWN keys to scroll to Sys Config;
press ENTER key.
4. Press UP or DOWN keys to scroll to Alarm Config
(A7); press ENTER key.
5. Press ENTER key to scroll to desired value Diff Lo,
Diff Hi or Del (see Figure 15).
6. Press UP or DOWN keys to adjust value.
7. Press ENTER key to save.
FIGURE 15
Adjusting Mixed Air Alarm Values
Refrigerant Low Pressure
When the low pressure switch indicates a low pressure
condition and there is an active call for cooling, the
controller will generate an alarm (after a delay). The
delay used by the low pressure alarm is determined
by the outdoor air temperature (OAT on display). If the
outdoor air temperature is below 55°F, the delay is 180
seconds (LDel on display). If the outdoor temperature
is above 55°F, the delay is 120 seconds (Del on
display). The unit will also have an address-based delay
that will affect start up time; the default is 5 seconds
multiplied by unit address. (The unit address-based
delay is only when the unit is in stand alone operation.)
Additionally, if the outdoor temperature sensor is not
used, the delay is set to 180 seconds. The controller
will try to run the refrigeration system two times before
the alarm will lock the compressor out.
If 15 minutes (Two Count Del value on display) passes
before the second attempt, the number of tries will be
reset.
To adjust these values:
1. Press MENU key to go to the Main Menu screen.
2. Press UP or DOWN keys and ENTER key to enter
USER password 2000.
3. Press UP or DOWN keys to scroll to Sys Config;
press ENTER key.

Manual 2100-665G
Page 13 of 28
FIGURE 16
Adjusting Damper Alarm Values
4. Press UP or DOWN keys to scroll to Alarm Config
(A7); press ENTER key.
5. Press ENTER key to scroll to desired value OAT,
Diff, Del, LDel or Two Count Del (see Figure 15).
6. Press UP or DOWN keys to adjust value.
7. Press ENTER key to save.
Refrigerant High Pressure
When the wall-mount unit receives a signal from the
compressor control module (CCM) indicating a high
pressure event, the wall-mount unit will generate an
alarm. Upon receiving the alarm, the wall-mount unit
will remove the “Y” call from the CCM, resetting the
status of the CCM. The alarm will stay present on the
wall-mount unit until manually cleared. This operation
has no configurable parameters.
Economizer Damper
When the controller commands the economizer damper
actuator to a position other than 0% and the damper
switch indicates the damper is not open, after a delay
of 20 seconds (Open Del on display) the controller
will generate a damper failed to open alarm. When the
controller commands the economizer damper actuator
to the 0% position and the damper switch indicates
the damper is not closed, after a delay of 300 seconds
(Close Del on display) the controller will generate a
damper failed to close alarm.
To adjust these values:
1. Press MENU key to go to the Main Menu screen.
2. Press UP or DOWN keys and ENTER key to enter
USER password 2000.
3. Press UP or DOWN keys to scroll to Sys Config;
press ENTER key.
4. Press UP or DOWN keys to scroll to Alarm Config
(A8); press ENTER key.
5. Press ENTER key to scroll to desired value Open
Del or Close Del (see Figure 16).
6. Press UP or DOWN keys to adjust value.
7. Press ENTER key to save.
Freezestat
When the coil temperature is below 30°F, the unit will
generate a Freeze alarm on the TEC-EYE and a Freeze
Temp alarm on the LC6000. This will operate the
blower and turn off the compressor.
The alarm will be automatically reset when the coil
temperature rises above 55°F or after a 5-minute delay
while the temperature is above 30°F.
To adjust freezestat values:
1. Press MENU key to go to the Main Menu screen.
2. Press UP or DOWN keys and ENTER key to enter
USER password 2000.
3. Press UP or DOWN keys to scroll to Sys Config;
press ENTER key.
4. Press UP or DOWN keys to scroll to Alarm Config
(A9); press ENTER key.
5. Press ENTER key to scroll to desired value Low
Temp, Delay, Reset Temp or Reset Del (see Figure
17).
6. Press UP or DOWN keys to adjust value.
7. Press ENTER key to save.
FIGURE 17
Adjusting Freeze Alarm Values

Manual 2100-665G
Page 14 of 28
NOTE: Screenshots shown in this manual reflect
default settings (when applicable).
On/Off Control
The wall-mount unit can be turned on and off with the
TEC-EYE. When the unit is set to ON, the system will
heat and cool the space either in standalone mode or
when connected to the LC. When the unit is set to OFF,
the unit will not heat or cool the space.
To turn the unit on or off:
1. Press MENU key to go to the Main Menu screen.
2. Press UP or DOWN keys and ENTER key to enter
USER password 2000.
3. Press UP or DOWN keys to scroll to ON/OFF; press
ENTER key.
4. Press UP or DOWN key to change the system from
OFF to ON or from ON to OFF.
5. Press ESCAPE key until Main Menu screen is
displayed.
Fan Control
The blower will be in continuous operation in stand
alone mode. To operate the blower continuously while
communicating with the LC6000 or th-TUNE single
unit controller, refer to the latest version of the
2100-669 LC6000 Service Instructions manual or
2100-678 th-TUNE manual.
CONTROL OPERATION
Temperature Control
When the unit is connected to the LC controller, it
will receive all of its heating, cooling and ventilation
commands from the controller.
When the unit is in stand alone operation, it will
heat, cool and ventilate based on the return air
temperature measurement. The return air temperature
will be compared to the cooling setpoint. Based
on differentials above and below the setpoint, the
available cooling and heating stages will be utilized.
Cooling Sequence – Economizer Available
(see Figure 18)
If the return air temperature is higher than 79°F
(Setpoint + Stage 1 Diff On) and outdoor conditions are
acceptable for economizing, the unit will enable the
economizer. If the return air temperature is higher than
80°F (Setpoint + Stage 2 Diff On), the unit will enable
mechanical cooling stage 1. If the control value is
higher than 81°F (Setpoint + Stage 3 Diff On), the unit
will enable mechanical cooling stage 2.
Cooling Sequence – Economizer Not Available
(see Figure 18)
If the return air temperature is higher than 79°F
(Setpoint + Stage 1 Diff On), the unit will enable stage
1 mechanical cooling. If the return air temperature is
higher than 80°F (Setpoint + Stage 2 Diff On), the unit
will enable stage 2 mechanical cooling.
FIGURE 18
MULTI-TEC Wall-Mount Unit Cooling Staging
Stage 1 Diff On
Stage 2
Stage 1
74 75 76 77 78 79 80 81 82 83
Off Band On
72 73
Stage 1 Diff Off
Stage 2 Diff Off
Stage 3 Stage 3 Diff Off
Stage 3 Diff On
Stage 2 Diff On
Setpoint

Manual 2100-665G
Page 15 of 28
To adjust these parameters:
1. Press MENU key to go to the Main Menu screen.
2. Press UP or DOWN keys and ENTER key to enter
USER password 2000.
3. Press UP or DOWN keys to scroll to Sys Config;
press ENTER key.
4. Press UP or DOWN keys to scroll to Cooling Setup
(A2); press ENTER key.
5. Press ENTER key to scroll to Stage 1 Diff On,
Stage 1 Diff Off, Stage 2 Diff On, Stage 2 Diff Off,
Stage 3 Diff On or Stage 3 Diff Off (see Figure
19).
6. Press UP or DOWN keys to adjust value.
7. Press ENTER key to save.
Heating Sequence (see Figure 21)
If the return air temperature is below 58°F (Setpoint
+ Stage 1 Diff On), the unit will enable electric heat
stage 1. If the return air temperature is below 57°F
(Setpoint + Stage 2 Diff On), the unit will enable
electric heat stage 2. If the control value is below
56°F (Setpoint + Stage 3 Diff On), the unit will enable
electric heat stage 3.
To adjust these parameters:
1. Press MENU key to go to the Main Menu screen.
2. Press UP or DOWN keys and ENTER key to enter
USER password 2000.
3. Press UP or DOWN keys to scroll to Sys Config;
press ENTER key.
4. Press UP or DOWN keys to scroll to Heating Setup
(A3); press ENTER key.
5. Press ENTER key to scroll to Stage 1 Diff On,
Stage 1 Diff Off, Stage 2 Diff On, Stage 2 Diff Off,
Stage 3 Diff On or Stage 3 Diff Off (see Figure 20).
6. Press UP or DOWN keys to adjust value.
7. Press ENTER key to save.
FIGURE 21
MULTI-TEC Wall-Mount Unit Heating Staging
On Band Off
Stage 2
57 58 59 60 61 62 63 64 65
55 56
Setpoint
Stage 2 Diff On
Stage 2 Diff Off
Stage 1
Stage 1 Diff On
Stage 1 Diff Off
Stage 3
Stage 3 Diff On
Stage 3 Diff Off
FIGURE 19
Adjusting Cooling Differential Values
FIGURE 20
Adjusting Heating Differential Values

Manual 2100-665G
Page 16 of 28
Free Cooling
If the unit is equipped with an economizer, and
conditions are acceptable for economizer operation,
the MULTI-TEC wall-mount unit will utilize free cooling
operation before the use of any cooling operation
requiring compressor operation to reduce the energy
required to cool the indoor space.
Economizer Disable
There are two methods to disable the economizer if
the use of free cooling is restricted. The first method is
to select None as the economizer type within the Sys.
Config. menu. The second method requires changing
the model number within the Adv. Sys. Config. menu
to reflect a model installed with a blank-off plate (see
model nomenclature in Figure 1 on page 3). Changing
the wall-mount unit model number to reflect a unit with
a blank-off plate will not allow for an economizer type
to be selected therefore defaulting to a disabled state,
along with all sensors/alarms associated with it.
Economizer Enable
The economizer will be enabled for cooling operation
if the model number reflects a wall-mount unit with an
economizer installed, an economizer type other than
None and the conditions for the economizer type are
met. The following list explains the economizer types
and the parameters required for operation:
None
Economizer will not be enabled for freecooling
operation.
Drybulb Only
1. Outdoor air temperature is below the Outdoor Set
outdoor temperature setpoint listed within the Sys.
Config. menu. (Outdoor Set temperature setpoint is
70°F by default.) See Figure 22.
2. LC6000 is not currently in any dehumidification
mode.
3. LC6000 is not currently in any emergency mode.
Temperature and Humidity (Default)
1. Outdoor air temperature is below the Outdoor Set
outdoor temperature setpoint listed within the Sys.
Config. menu. (Outdoor Set temperature setpoint is
70°F by default.) See Figure 22.
2. Outdoor relative humidity is below the OA Humid
Set outdoor humidity setpoint listed within the Sys.
Config. menu. (OA Humid Set humidity setpoint is
80% RH by default.) See Figure 22.
3. LC6000 is not currently in any dehumidification
mode.
4. LC6000 is not currently in any emergency mode.
FIGURE 22
Economizer A4 Screen
FIGURE 23
Economizer A5 Screen
Enthalpy
1. Outdoor air temperature is below the Outdoor Set,
outdoor temperature setpoint, listed within the Sys.
Config. menu. (Outdoor Set temperature setpoint is
70°F by default.) See Figure 22.
2. Outdoor relative humidity is below the OA Humid
Set outdoor humidity setpoint listed within the Sys.
Config. menu. (OA Humid Set humidity setpoint is
80% RH by default.) See Figure 22.
3. The outdoor air dewpoint is below the OA Dew
Pt Set outdoor dewpoint setpoint, listed within
the Sys. Config. menu. (OA Dew Pt Set dewpoint
setpoint is 55°F by default.) See Figure 23.
4. LC6000 is not currently in any dehumidification
mode.
5. LC6000 is not currently in any emergency mode.
Economizer Modulation
The economizer damper output will modulate
between 0% and 100% to maintain a 55°F mixed
air temperature when the outdoor air conditions are
acceptable.
To adjust damper modulation values:
1. Press MENU key to go to the Main Menu screen.
2. Press UP or DOWN keys and ENTER key to enter
USER password 2000.

Manual 2100-665G
Page 17 of 28
3. Press UP or DOWN keys to scroll to Sys Config;
press ENTER key.
4. Press UP or DOWN keys to scroll to Unit Config
(A6); press ENTER key.
5.
Press ENTER key to scroll to Mixed FC Set, Gain,
Integral or Derivative (see Figure 24).
6. Press UP or DOWN keys to adjust parameter value.
7. Press ENTER key to save.
FIGURE 24
Adjusting Damper Modulation Values
Economizer Note
The economizer and mechanical cooling can operate
simultaneously because the economizer uses the mixed
air temperature sensor.
Compressor
Enable
The compressor will be enabled when stage 1 is
enabled and outdoor air conditions are not acceptable
for economizing. If the outdoor conditions are
acceptable, the compressor will run when stage 2 is
enabled.
Delays and Run Time
The compressor will have a minimum run time of 180
seconds and a minimum off time of 120 seconds.
If the compressor is two stage, the second stage will
have a minimum delay of 120 seconds. The 2nd stage
will also have a minimum on time of 120 seconds.
When communicating with the LC, the delay between
compressors in units installed on the same shelter will
be managed by the settings configured in the LC.
Electric Reheat Dehumidification
Electric reheat dehumidification is only available as a
factory-installed option that must be ordered with the
unit. It cannot be installed in the field on an existing unit.
Dehumidification will only become active if the unit
is connected to the LC6000 and the appropriate
conditions are present.
When the wall-mount unit receives a dehumidification
call from the LC6000, the wall-mount unit will
disable the economizer to force the system to use air
conditioning and prevent any additional humidity from
being introduced from outdoor air. The wall-mount unit
will then turn on the air conditioning system which will
remove moisture and cool the space. At the same time,
the electric reheat coil will be energized to extend the
run time of the cooling cycle and prevent cool air from
being introduced to the space.
When the dehumidification command is first received
both cooling and reheat will be activated.
The cooling will shut off when the return air
temperature is 62°F to prevent the unit from causing
the system to go into heating mode (see Figure 25).
The compressor will turn on again once the return
temperature rises to 75°F.
The electric heat will operate to maximize cooling times
which will in turn remove moisture from the space. The
electric reheat will turn on when the temperature falls
to 73°F and will turn back off at 75°F.
The system will continue to operate this way until the
LC removes the call for active dehumidification.
A heating or cooling call will disable the dehumidification
call. Dehumidification can only take place when system
is not actively heating or cooling.
FIGURE 25
Dehumidification Control
Reheat
Cool
62 64 66 68 70 72 74 76 78
58 6059 61 63 65 67 69 71 73 75 77 79

Manual 2100-665G
Page 18 of 28
MIS-3869
Dirty Filter Switch
+ Communication Wire
- Communication Wire
24VAC GND
24VAC Hot
24VAC+
Y TO Compressor CCM
24VAC+
Stage 1 Heat
Stage 1 Heat
Blower Relay
24VAC+
Ground
2-10 VDC To Damper Actuator
Analog Ground
Evap. Temp Sensor
24 VDC To Outdoor Air Sensor
Outdoor Humidity Sensor
Return Air Temp Sensor
Outdoor Air Temp Sensor
Mixed Air Temp Sensor
Digital Ground
Damper Blade Switch
Low Pressure Switch
Comp. Alarm Relay
MIS-3869
FIGURE 26
Wall-Mount Unit Control Board
Smoke
Damper Blade Switch
2
Reheat Valve
For a more detailed operation description, see the 2100-
669 LC6000 Service Instructions manual.
Mechanical Dehumidification
Mechanical dehumidification is only available as a
factory-installed option that must be ordered with the
unit. It cannot be installed in the field on an existing unit.
Dehumidification will only become active if the unit
is connected to the LC6000 and the appropriate
conditions are present.
When the wall-mount unit receives a dehumidification
call from the LC6000, the wall-mount unit will
disable the economizer to force the system to use air
conditioning and prevent any additional humidity from
being introduced from outdoor air. The wall-mount
unit will then turn on the air conditioning system
which will remove moisture and cool the space. At the
same time, the 3-way dehumidification valve will be
opened to extend the run time of the cooling cycle and
prevent cool air from being introduced to the space.
The dehumidification sequence will run until the space
temperature reaches the heating setpoint or cooling
setpoint or the humidity setpoint is reached.
When the dehumidification command is first received
both cooling and reheat will be activated.
The cooling will shut off when the return air
temperature is 62°F to prevent the unit from causing
the system to go into heating mode (see Figure 25).
The compressor will turn on again once the return
temperature rises to 75°F.
The electric heat will operate to maximize cooling times
which will in turn remove moisture from the space. The
electric reheat will turn on when the temperature falls
to 73°F and will turn back off at 75°F.
The system will continue to operate this way until the
LC removes the call for active dehumidification.
The reheat coil is dependent on space load to warm the
temperature back up once the compressor is disabled.
A heating or cooling call will disable the dehumidification
call. Dehumidification can only take place when system
is not actively heating or cooling.
For a more detailed operation description, see the 2100-
669 LC6000 Service Instructions manual.