Bard FUSION-TEC WR36BPA, FUSION-TEC WR58BPA, FUSION-TEC WR36BPB, FUSION-TEC WR58BPB Service Instructions Manual

SERVICE INSTRUCTIONS

FUSION-TEC® WALL-MOUNT

AIR CONDITIONER

Models:

WR36BPA WR58BPA

WR36BPB WR58BPB

NOTE: LC6000 controller is required for operation when

WR**BP* units are used.

Bard Manufacturing Company, Inc.
Bryan, Ohio 43506
www.bardhvac.com

Manual: 2100-695
Supersedes: NEW
Date: 5-10-19

Page 1 of 54

CONTENTS

Using the TEC-EYETM ....................................................6

TEC-EYE Hand-Held Diagnostic Tool ...................................6

TEC-EYE Screen Structure and Password Level ..............

TEC-EYE

Main Status Screen ....................................................7

Quick Menu ..............................................................8

Setpoints ...........................................................8

Information ........................................................8

Staging Information .....................................8

Orphan Mode Staging ...................................8

Master Staging ............................................8

A/C Circuit Measurements .............................9

Last 24 Hour Operation ................................9

Component Lifetime Hours ...........................9

Software Version ..........................................9

Alarm Log ..........................................................9

Addressing Wall-Mount Units ....................................10

Executing a Run Test ...............................................10

Run Test Parameter Descriptions ........................11

Reset to Factory Defaults ..........................................11

Acronyms ....................................................7

Operation ..................................................................... 12

Unit On/Off ....................................................................12

Alarm Adjustment ...........................................................12

Acknowledging Alarms .............................................12

Clearing Alarms .......................................................12

Clearing Alarm Logs and Counters .............................12

Exporting Alarm Logs ...............................................12

Exporting 7 Day Logs ...............................................13

Orphan Model ................................................................13

Zone ..............................................................................13

Temperature/Humidity Control ..........................................13

Temperature/Humidity Control Components ................13

Return Air Temperature Sensor ...........................13

Return Air Temperature Alarm .....................14

Temperature/Humidity Control Operation ....................14

Heating Sequence.............................................15

Staging ............................................................15

Adjusting Cooling Staging ...........................15

Adjusting Heating Staging ..........................16

Dehumidification ..............................................16

Electronic Expansion Valve (EEV) .....................................16

EEV Components .....................................................16

Electronic Expansion Valve ................................16

EEV Instructions for Vacuum, Reclaim,

Charge Unit ...............................................16

System Pressures .......................................17

Suction Pressure Transducer ..............................17

Troubleshooting the Suction Pressure

Transducer ................................................18

Suction Pressure Alarm ..............................18

Suction Temperature Sensor ..............................18

Suction Temperature Alarm .........................18

EEV Operation .........................................................19

EEV Superheat Control ......................................19

Additional EEV Alarms .............................................19

Low Superheat Alarm ........................................19

Indoor Airflow .................................................................19

Cooling Sequence: Economizer Available ...............

Economizer Operation in Orphan Mode .........

Cooling Sequence: Economizer Not Available .........

Evaporator Freeze Condition Alarm .................

14
14
15

18

Indoor Airflow Components .......................................19

Blower .............................................................19

Blower Status Switch .................................20

7

Blower Status Alarm ...................................21

Filters ..............................................................22

Dirty Filter Switch .............................................22

Dirty Filter Alarm .......................................22

Filter Indicator Light .........................................22

Indoor Airflow Operation ...........................................23

High Sensible Mode ..........................................23

Blower Speed Control ........................................23

Additional Indoor Airflow Alarms ...............................23

Supply Air Temperature Alarm ............................23

Condenser Fan ...............................................................23

Condenser Fan Components ......................................23

Condenser Fan .................................................23

Liquid Line Pressure Transducer .........................24

Troubleshooting the Liquid Pressure

Transducer ................................................24

Liquid Pressure Transducer Alarm ...............24

Liquid Temperature Sensor ................................24

Condenser Fan Operation..........................................25

Condenser Fan Speed Control

High Pressure Control........................................25

Condenser Fan Speed .................................25

Second Stage Drop Out ..............................26

Low Ambient Control .........................................26

Additional Condenser Fan Alarms ..............................26

Dirty Condenser Coil Alarm ................................26

Compressor ....................................................................26

Compressor Components ..........................................26

Compressor ......................................................26

Compressor Control Module (CCM) .....................26

Delay-on-Make Timer ..................................26

Short Cycle Protection/Delay-on-Break .........26

High Pressure Detection .............................26

Test Mode .................................................26

High Pressure Safety Switch ..............................28

Refrigerant High Pressure Alarm ..................28

Phase Monitor ..................................................28

Compressor Operation ..............................................28

Compressor Low Temperature Limit ....................28

Additional Compressor Alarms ...................................29

Refrigerant Low Pressure Alarm ..........................29

Economizer ....................................................................29

Economizer Components ..........................................29

Actuator ...........................................................29

Dust Sensor .....................................................30

Dust Sensor Failure Alarm ..........................30

High Dust Limit Alarm ................................30

Damper Blade ..................................................31

Minimum Damper Position .........................31

Damper Switch .................................................31

Damper Failed to Open Alarm .....................31

Damper Failed to Close Alarm .....................32

Outdoor Temperature and Humidity Combination

Sensor .............................................................32

Outdoor Temperature Sensor Failure Alarm ...33

Supply Temperature Sensor ...............................33

Brownout Protection w/Adjustment ........................

Outdoor Humidity Sensor Failure Alarm ..........

............................25

27

33

Manual 2100-695
Page 2 of 54

Supply Temperature Sensor Failure Alarm ....33

High Supply Air Temperature Alarm .............33

Low Supply Air Temperature Alarm ..............33

Economizer Operation ..............................................34

Emergency Cooling Mode ................................................35

Emergency Ventilation Mode ............................................35

Model/Serial Number Configuration ..................................35

Electric Heat Option .......................................................36

Electric Heat Components ........................................36

Electric Heating Element ...................................36

Thermal Overload ..............................................36

Electric Heat Operation ............................................36

Bard Guard Anti-Theft System Option ...............................36

Smoke Detector Unit Disable Option .................................36

Inverter Option ...............................................................36

Refrigerant Information ...........................................40

General ..........................................................................40

Topping Off System Charge ..............................................40

Safety Practices..............................................................40

Important Installer Note ..................................................40

R410-A Refrigerant Charge ..............................................40

Pressure Service Ports .....................................................41

Maintenance ................................................................ 42

Standard Maintenance Procedures ...................................42

Bard Guard Anti-Theft System Option ...............................42

Troubleshooting ......................................................... 43

8301-067 Outdoor Temperature/Humidity Sensor ..............43

8301-067 Sensor Connections .................................43

8301-067 Humidity Sensor Test Value Outputs ..........46

8301-067 Humidity Sensor Calibration .....................46

8

301-057 Blower Status Switch/Dirty Filter Switch ...............

8612-061 Dust (Particulate) Sensor Control Board ............48

8612-061 Control Board Output Signal Not

Responsive to Dust ..................................................48

8301-073 Dust (Particulate) Sensor .................................50

8408-044 Return Air Sensor/Suction Sensor .....................51

8301-066 Supply Air Sensor ...........................................52

8406-157 Liquid Line Pressure Transducer ......................53

8406-158 Suction Pressure Transducer ............................54

47

FIGURES AND TABLES

Figure 1 TEC-EYE Display and Interface .........................6

Figure 2 TEC-EYE Connection to Unit Control .................6

Figure 3 Quick Menu Icons ...........................................8

Figure 4 Cool and Heat Setpoints ..................................8

Figure 5 Orphan Mode Staging ......................................8

Figure 6 Master Staging ................................................8

Figure 7 A/C Circuit Measurements ................................9

Figure 8 Last 24 Operation ...........................................9

Figure 9 Software Version..............................................9

Figure 10 Changing Unit Address ..................................10

Figure 11 Executing Run Test ........................................10

Figure 12 Run Test Summary ........................................10

Figure 13 Run Test: Motors & Sensors ............................11

Figure 14 Run Test: A/C Circuit .....................................11

Figure 15 Restoring Factory Default Settings ..................11

Figure 16 Clearing All Alarms ........................................12

Figure 17 Clearing Alarm Logs and Counters ...................12

Figure 18 Changing Zone ..............................................13

Figure 19 Adjusting Return Air Sensor ...........................13

Figure 20 Staging ........................................................14

Figure 21 Enabling Free Cooling Delay ...........................15

Figure 22 Viewing Unit Stages .......................................15

Figure 23 Adjusting Cooling Stage Differentials ...............16

Figure 24 Adjusting Heating Stage Differentials ..............16

Figure 25 Overriding EEV Output ...................................17

Figure 26 Electronic Expansion Valve and Service Tool ....17

Figure 27 Adjusting Suction Pressure Transducer Values ..18
Figure 28
Figure 29 Adjusting Suction Temperature Sensor Values ..18
Figure 30

Figure 31 Putting Blower Output into Override Mode .......19

Figure 32 Dirty Filter Switch/Blower Status Switch ..........21

Figure 33 Verifying Differential Airflow Status .................21

Figure 34 Adjusting Air Flow Alarm Delay .......................21

Figure 35

Figure 36 Enabling High Sensible Mode .........................23

Figure 37 Verifying Condenser Fan Output ......................23

Figure 38 Fan Blade Setting .........................................24

Figure 39 Adjusting Liquid Pressure Transducer Values ....24

Figure 40 Voltage/Pressure: Liquid Pressure Transducer ...24

Figure 41 Adjusting Liquid Temperature Values ...............25

Figure 42 Liquid Pressure Control Setpoint .....................25

Figure 43

Figure 44 Adjusting Compressor Delays ..........................28

Figure 45 Adjusting Compressor Low Temp Limit ............29

Figure 46

Figure 47 Damper Output and Override ..........................29

Figure 48 Dust Sensor ..................................................30

Figure 49

Figure 50 Adjusting Minimum Damper Position ..............31

Figure 51 Damper Switch .............................................31

Figure 52 Adjusting Damper Alarm Delay .......................32

Figure 53 Outdoor Air Sensor ........................................32

Figure 54 Outdoor Humidity Sensor ...............................32

Figure 55 Supply Air Sensor ..........................................33

Figure 56 Adjusting Supply Air Temperature Differential ..33

Figure 57 Economizer Setup A2 ....................................34

Figure 58

Figure 59 FUSION-TEC WR Series Nomenclature ............37

Figure 60

Figure 61 8301-067 Sensor Electrical Connections ........43

Figure 62 8301-067 Sensor Terminal Connections ..........43

Figure 63 8301-067 DIP Switch/Output Configuration ....46

Figure 64 8301-057 Air Differential Switch Terminals .....47

Figure 65 8612-061 Dust Sensor Alarm Board ...............48

Figure 66

Table 1

Table 2 Unit Status Messages ......................................7

Table 3 Unit Specific Superheat Settings ....................19

Table 4A WR36BP* Blower Speeds ..............................20

Table 4B WR58BP* Blower Speeds ..............................20

Table 5 Rated Airflow ................................................20

Table 6 Indoor Blower Performance ............................20

Table 7 Maximum ESP of Operation:

Electric Heat Only .........................................20

Table 8 Filter Switch Pressure Settings .......................21

Table 9 Economizer Default Settings ...........................35

Table 10 FUSION-TEC WR Series Board Terminals .........39

Table 11 Cooling Pressures ..........................................41

Table 12 8301-067 Sensor: Temperature to

Thermocouple Resistance ..............................44

Table 13 8301-067 Sensor: Relative Humidity to

Humidity Sensor Current Output .....................45

Table 14 8301-073 Sensor: Dust/Volts .........................50

Table 15 8408-044 Sensor: Temperature/Resistance ....51

Table 16 8301-066 Sensor: Temperature/Resistance .....52

Table 17 8406-157 0-65psi Pressure Transducer ..........53

Table 18 8406-1580-250psi Pressure Transducer .........54

Voltage/Pressure: Suction Pressure Transducer ..

Adjusting Freeze Setpoint and Alarm Delay .......

Dirty Filter Switch and Filter Indicator Light .......

8201-164 Compressor Control Module

Adjusting Low Pressure Alarm Settings ...............

Adjusting Dust Sensor Alarm Setpoint

Economizer Setup A3 .....................................

FUSION-TEC WR Series Unit Control Board .......

Dust Sensor Alarm Board Power Supply Check ..

LC6000/TEC-EYE Passwords (Defaults) ................

..............27

................30

18

18

22

29

35

38

49

6

Manual 2100-695
Page 3 of 54

GENERAL INFORMATION

Air Conditioning System

This Bard air conditioning system is composed of
FUSION-TEC WR Series wall-mounted air conditioners
matched with an LC6000 lead/lag controller. The wall
mounts are specifically engineered for telecom/motor
control center rooms.

NOTE: The LC6000 lead/lag controller and FUSION-

TEC WR Series wall-mount units are designed
specifically to work together. The controller
cannot run other brands of systems, nor can
other controllers run the FUSION-TEC WR
Series wall-mount units. They are a complete
system, and must be used together.

Wall-Mount Air Conditioner Units

The wall-mount units operate on VAC power.
will supply 100% of 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.

Each of these units are fully charged with refrigerant
and have optional auxiliary heat.

The units

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 without duct work. Flanges
are provided for transition from unit to wall grilles.

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 for information
on codes and standards.

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 supply flange 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 air
conditioner. 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

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]

Manual 2100-695
Page 4 of 54

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.

!

WARNING

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 ange and combustible materials.

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.

!

CAUTION

Cut hazard.

Wear gloves to avoid contact with sharp
edges.

Failure to do so could result in personal injury.

Manual 2100-695
Page 5 of 54

USING THE TEC-EYE

TEC-EYE (Bard P/N 8301-059) Display and Interface (Status Screen Shown)

TM

FIGURE 1

ALARM KEY

MENU KEY

ESCAPE KEY

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

TEC-EYE Hand-Held Diagnostic Tool

The TEC-EYE service tool is used to communicate
with the FUSION-TEC unit logic board. By connecting
directly to the logic board inside the unit control
panel, it is possible to perform diagnostics on the unit,
adjust certain settings and verify unit and economizer
operation through a run test procedure. The TEC-EYE
service tool is required for unit setup and operation. The
TEC-EYE is supplied with the LC6000 controller but
can also be ordered separately (Bard P/N 8301-059).

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 TEC-EYE connects to the wall-mount unit control
board via an RJ11 modular phone connector as shown
in Figure 2.

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 site.

UP KEY

ENTER KEY

DOWN KEY

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 Connection to Unit Control

Modular Phone Connector for
TEC-EYE Hand-Held Diagnostic Tool

TABLE 1

LC6000/TEC-EYE Passwords (Defaults)

User 2000

Technician 1313

Engineer 9254

Use UP or DOWN keys and ENTER key to enter password

Manual 2100-695
Page 6 of 54

TEC-EYE Screen Structure and Password Level

Quick Menu
Setpoints (Orphan Mode Temperature Control)
Information
Alarm Log
Main Menu
System Config: A1-A10 User (2000)
Adv Sys Config: B1-B8 Technician (1313)
I-O Config: C1-C15 Technician (1313)
On/Off: User (2000)
Alarm Logs: User (2000)
Settings
Date/Time: Technician (1313)
Language: User (2000)
Import/Export
Unit Parameters: Engineer (9254)
Alarm Log Export: User (2000)
7 Day Log Export: User (2000)
Initialization
Alarm Management: User (2000)
System Default: Engineer (9254)
Change Passwords
Logout

In addition to the menu structure above, there are also
Status and Alarm screens.

TEC-EYE Acronyms

MAT – Mixed air temperature (calculated value)
RAT – Return air temperature
SAT – Supply air temperature
OAT – Outdoor air temperature
OAH – Outdoor air humidity
ODP – Outdoor dew point (calculated value)
Blower – Indoor blower speed
Fan – Outdoor fan speed
Damper – Free cooling damper position
FC – Free cooling status
CL1 – Compressor stage 1 status
CL2 – Compressor stage 2 status
H1 – Heater stage 1 status
H2 – Heater stage 2 status
ST – Number of start requests in last hour

NOTE: Digital refers to On/Off whereas analog is a

variable input.

Main Status Screen

The Main Status Screen is the default start-up screen
and also the return screen after 5 minutes of no
activity. The screen can be accessed at any time by
pressing the ESCAPE key repeatedly.

The wall-mount unit address is displayed in the upper
right corner on the main Main Status Screen (see
Figure 1). The Main Status Screen also shows the
current date, time, return air temperature (RAT), mixed
air temperature (MAT), supply air temperature (SAT),
outdoor air temperature (OAT), outdoor air humidity
(OAH) and outdoor dew point (ODP) conditions. Blower

speed, condenser fan speed, damper position and unit
status are also displayed. See Table 2 for wall-mount
unit status messages.

TABLE 2

Unit Status Messages

Message Description

Waiting...

Orphan Mode

LC Online

Cont. Blower

Power Loss

Free Cooling Unit is actively economizing.

Optimized Cool

Cooling Unit is actively mechanical cooling.

Heating Unit is actively heating.

Passive Dehum

Active Dehum

Self Test Unit is performing a self test.

Off by Alarm

Off by DI

Off by LC

Off by Keyboard

Override Active

Emergency Vent

Emergency Cool

Emergency Off

PLC is on and has not started running
the application yet.

Unit is on and in orphan mode with
no calls for heating or cooling.

Unit is on and communicating with
the LC6000 with no heating or
cooling calls.

Unit is operating with continuous
blower when no heating or cooling
calls are present.

Unit has experienced a loss of main
utility power. Alarm only available
with inverter units.

Unit is mechanical cooling while
actively economizing.

Unit is taking measures to decrease
humidity without using extra energy.

Unit is taking active measures to
decrease humidity.

Unit has major fault preventing
operation.

Unit is disabled by the local unit
disable/smoke input.

Unit has been turned off by the
supervisory controller.

Unit has been turned off by the local
user.

There is an active override on the
system.

Unit is in Emergency Ventilation.
LC6000 has an active hydrogen
alarm.

Unit is in Emergency Cooling. Indoor
temperatures have exceeded high
temp alarms.

Unit is in Emergency Off. LC6000
has an active smoke alarm.

Manual 2100-695
Page 7 of 54

The Quick Menu is accessible from the
Screen

. Setpoints, Information and Alarm Log are
available through the Quick Menu. Pressing the UP
or DOWN keys while on the
change the Quick Menu icon displayed (see Figure

3). Press the ENTER key when the desired icon is
displayed.

Main Status Screen

Main Status

will

FIGURE 3

Quick Menu Icons

Alarm Log Information

NOTE: Screenshots shown in this manual reflect

default settings (when applicable).

Quick Menu

Setpoints

From this screen, the local unit heating and cooling
setpoints, used for orphan mode operation only, can be
changed.

Once the supervisory controller (LC6000) is connected,
cooling and heating setpoints will be communicated
and local cooling and heating setpoints will be replaced
with the communicated cooling and heating setpoints.

If at any time the wall-mount unit(s) loses
communication with the LC6000 controller, the wall­mount unit(s) will go into orphan mode and operate
using the last communicated setpoints.

To verify or change the wall-mount unit cooling and
heating setpoints in orphan mode:

1. Connect the TEC-EYE diagnostic tool to the control

board located in the unit.

2. From the Status screen, press UP or DOWN key

until Quick Menu displays Setpoints icon. Press
ENTER key.

3. Press ENTER key to scroll to the selected choice

(see Figure 4).

Setpoints

FIGURE 4

Cool and Heat Setpoints

4. Press UP or DOWN key on desired value until value
displays correctly.

5. Press ENTER key to save and scroll to next
parameter.

6. Press ESCAPE key until Main Menu screen is
displayed.

Information

The information screens are used as a quick reference
to show unit operational information such as staging,
A/C circuit measurements, last 24 hour run times and
software version.

Staging Information

Staging information is used to show if free cooling
is available or if any unit operation should be taking
place. The look of the staging display depends on if the
unit is communicating with a supervisory controller or
operating in orphan mode.

Orphan Mode Staging

If the unit is operating in orphan mode, the title will
display as Unit Staging (see Figure 5). This signifies
that the local unit has control of the unit heating and
cooling stages.

FIGURE 5

Orphan Mode Staging

Master Staging

If the unit is communicating with a supervisory
controller, the title will display as Master Staging (see
Figure 6). This signifies that the supervisory controller
has control of the unit heating and cooling stages.

FIGURE 6

Master Staging

Manual 2100-695
Page 8 of 54

A/C Circuit Measurements

A/C Circuit Information can be found in two screens
within the information menu (see Figure 7). The
information and measurements provided are liquid line
temperature, liquid line pressure, condensing saturated
temperature, suction line temperature, suction line
pressures, suction saturated temperature, super heat,
sub-cooling and electronic expansion valve position.

FIGURE 7

A/C Circuit Measurements

Software Version

The Software Version screen displays the model
number of the unit as well as all software version
information for the PLC (see Figure 9).

FIGURE 9

Software Version

NOTICE

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/

Last 24 Hour Operation

Last 24 Hour Operation information tracks the runtimes
(Time) of different components or operations in the last
24 hour period (see Figure 8).

FIGURE 8

Last 24 Hour Operation

Alarm Log

The alarm log screens show a log of each alarm. There
will be a log for when alarm occurred and if the alarm
auto clears, it will show when the alarm cleared.

Manual 2100-695
Page 9 of 54

Addressing Wall-Mount Units

Each unit must have a unique address for the system
to operate correctly with th LC controller (Ex: 1, 2, 3,
...14 depending on the number of units). The wall­mount unit address is displayed in the upper right
corner on the Status screen on the TEC-EYE display
(see Figure 1 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.

7. Press ENTER key to save.

See page 13 for information on changing unit zone.

FIGURE 10

Changing Unit Address

FIGURE 11

Executing Run Test

7. Press UP or DOWN key to scroll between Run
Test Summary, Motors & Sensors and A/C Circuit

screens.

NOTE:

The Run Test Summary screen (Figure 12) contains
a readout of the test that is currently taking place,
and the Task the technician should be completing to
verify operation.

If the Run Test screens have been exited out
of, they can be returned to by navigating to
Run Test A10 as provided in the instructions
above, pressing ENTER key to scroll to Return
to Screens, pressing UP or DOWN key to
change value to YES and pressing ENTER key.

Executing a Run Test

This unit has the ability to perform a run test that will
operate all available unit functions in order to quickly
determine unit operation. Some unit parameters are
adjustable.

To execute a run test:

1. Press MENU key to access 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 Sys Config;
press ENTER key.

4. Press UP or DOWN keys to scroll to Run Test A10
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 and the screen will change to

Run Test Summary.

FIGURE 12

Run Test Summary

The Motors & Sensors screen (Figure 13) displays
output and estimated positional values for unit motors
and actuators, and also temperature and humidity
sensor values.

Manual 2100-695
Page 10 of 54

FIGURE 13

Run Test: Motors & Sensors

The A/C Circuit screen (Figure 14) displays all unit
inputs, outputs and calculations associated with the
A/C circuit operation.

FIGURE 14

Run Test: A/C Circuit

7. Press UP or DOWN key to change value to YES;
press ENTER key.

8. System will restart with default values.

FIGURE 15

Restoring Factory Default Settings

Run Test Parameter Descriptions

Econ Stage Time: Amount of time (in seconds)
allowed for damper blade movement in each
direction.

Cool Stage Time: Amount of time (in seconds) allowed
for each stage of cooling.

Heat Stage Time: Amount of time (in seconds)
allowed for heating stage.

Reset to Factory Defaults

To reset to factory default settings:

1. Press MENU key to go to the Main Menu screen.

2. Use UP or DOWN keys and ENTER key to enter
ENGINEER password 9254.

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 the Default
Installation screen.

6. Press ENTER key to scroll to Reset to Factory
Defaults (see Figure 15).

Manual 2100-695
Page 11 of 54

OPERATION

NOTE: Screenshots shown in this manual reflect

default settings (when applicable).

Unit On/Off

The wall-mount unit can be turned on and off from
the TEC-EYE. Turning the unit off with the following
instructions will disable all unit operation.

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 keys to change value from On
to Off or from Off to On.

5. Press ESCAPE key several times to return to Main
Menu screen.

The wall-mount unit may also be turned off by certain
alarms. Below is a list of conditions that will disable
unit operation to prevent damage to unit or property:

• System Off (set from LC6000)

• Emergency Off (set from LC6000)

• Unit Disable Input

• Invalid Model Number Size

• Return Air Sensor Failure Alarm in Orphan Mode

• Damper Failed to Close Alarm

• No Airflow Alarm (will cycle unit to attempt blower
restart)

the screen at the end of the alarm list (shown in Figure

16) and press and hold the ALARM key for 3 seconds.

FIGURE 16

Clearing All Alarms

Clearing Alarm Logs and Counters

To clear the alarm log and alarm counters:

1. Press MENU key to go to the Main Menu screen.

2. Use UP or DOWN keys and ENTER key to enter
USER password 2000.

3. Press UP or DOWN keys to scroll to Settings; press
ENTER key.

4. Press UP or DOWN keys to scroll to Initialization.
(Alarm Management 1/2 screen will be displayed.)

5. Press ENTER key to scroll to Clear Alarm Log (see
Figure 17).

6. Press UP or DOWN key to change value to YES;
press ENTER key.

7. Press ENTER key to scroll to Clear Counters.

8. Press UP or DOWN key to value to YES; press
ENTER key.

• Power Loss Input Active on Non-Inverter Model
Number

Alarm Adjustment

Acknowledging 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).

Clearing Alarms

Alarms can only be cleared after the alarm condition
has been corrected. To clear a single alarm, press and
hold the ALARM key for 3 seconds while viewing a
specific alarm screen. To clear all alarms, navigate to

Manual 2100-695
Page 12 of 54

FIGURE 17

Clearing Alarm Logs and Counters

Exporting Alarm Logs

See latest version of Supplemental Instructions manual
7960-815 for information on exporting alarm logs.

Exporting 7 Day Logs

See latest version of Supplemental Instructions manual
7960-816 for information on exporting 7 day I/O logs.

Orphan Mode

FUSION-TEC WR Series wall-mount units have the
capability to run without the LC6000 controller
attached—this feature is called orphan mode. This
keeps the shelter between 60°F and 77°F (factory
default settings) by the use of the factory-installed
return air sensor in each wall-mount unit. In orphan
mode, no auxiliary temperature measurement devices
are required for operation. The wall-mount unit
automatically uses a continuous blower setting to
circulate room air into the return air inlet and uses
the return air temperature sensor to control room
temperature.

To change default setpoints, refer to Setpoints on page 8.

During installation, the ability to run in orphan mode
allows deactivation of one of the existing, older wall­mount units, while keeping the shelter cool with the
other unit still operating. Once the first of the Bard
wall-mount units is installed and powered on, it will
operate in orphan mode—keeping the climate inside
the shelter stable and the installers comfortable while
the remainder of the older equipment is removed and
the remaining Bard wall-mount units and LC6000
controller are installed.

Additionally, should any or all of the FUSION-TEC WR
Series wall-mount units lose communication with the
LC6000 controller (such as during maintenance), they
will continue to serve the shelter’s needs until a repair
can be made.

Zone

When paired with a supervisory controller that uses
zones to control groups of wall units, this unit uses the
zone setting to relay to the supervisory controller what
zone it is set to operate in.

To change the zone:

1. Press MENU key to access 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 Sys Config;

press ENTER key.

4. Press UP or DOWN keys to scroll to Unit Setup A1

screen.

5. Press ENTER key to scroll to Zone (see Figure 18).

6. Press UP or DOWN keys to change to the desired

value.

7. Press ENTER key to save value.

FIGURE 18

Changing Zone

Temperature/Humidity Control

Temperature/Humidity Control Components

Return Air Temperature Sensor

The unit is equipped with a return air temperature
sensor to monitor the space temperature when the unit
is in orphan mode. The return air sensor is located
in the upper part of the return opening in such a way
that it is exposed to the entering airstream. An alarm
signal will be sent to the LC controller if the return air
temperature sensor is disconnected. The temperature is
measured with a 10k ohm NTC thermistor.

This sensor can be verified and adjusted by:

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 I/O Config;
press ENTER key.

4. Press UP or DOWN keys to scroll to Return Air
Sensor C4.

5. Verify the measurement displayed on screen is
accurate (see Figure 19).

FIGURE 19

Adjusting Return Air Sensor

6. If the measurement needs to be adjusted, apply an
offset value by pressing ENTER to scroll to Offset.

7. Press UP or DOWN keys to adjust the offset.

Manual 2100-695
Page 13 of 54

8. The update will not take effect until the cursor is
moved out of the Offset parameter.

9. Once adjusted, press the ESCAPE key several
times to return to Main Menu screen.

Return Air Temperature Alarm

When the return air temperature sensor value is out of
range (-41.0 to 303.0°F), the controller will generate
a sensor failure alarm to indicate the sensor is not
working properly.

This alarm is fixed and cannot be adjusted.

Temperature/Humidity Control Operation

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
orphan mode, 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.

To change or view the unit setpoint:

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 Cool Setpoint or Heat
Setpoint (see Figure 4 on page 8).

3. Press UP or DOWN keys to change the value to
desired heating and/or cooling setpoint.

Cooling Sequence – Economizer Available

NOTE: This description is based on the example shown

in Figure 20 and Figure 23 (page 16).

If the return air temperature is higher than 79°F
(Setpoint of 77°F + Stage 1 On Differential of 2°F) and
outdoor conditions are acceptable for economizing, the
unit will enable economizer operation (free cooling).
If the return air temperature is higher than 80°F
(Setpoint of 77°F + Stage 2 On Differential of 3°F),
the unit will enable mechanical cooling stage 1. If the
return air temperature is higher than 81°F (Setpoint
of 77°F + Stage 3 On Differential of 4°F), the unit
will enable mechanical cooling stage 2. Each stage
will then be disabled when the return air temperature
reaches the setpoint plus the stage off differential.

Economizer Operation in Orphan Mode

In orphan mode,there is a chance that the economizer
will not be given ample time to operate before the
heat load requires more cooling. In this case, there is
a delay that can be enabled in order to allow for the
most amount of free cooling to be utilized before the
compressor is staged on.

Free Cooling

Available

Free Cooling

Mechanical

Cooling Stage 1

Mechanical

Cooling Stage 2

Free Cooling

Not Available

Mechanical

Cooling Stage 1

Mechanical

Cooling Stage 2

Not Used

Heat Stage 1

FIGURE 20

Staging

Setpoint

72°F 73°F 74°F 75°F 76°F 77°F 78°F 79°F 80°F 81°F 82°F 83°F

Off

55°F 56°F 57°F 58°F 59°F 60°F 61°F 62°F 63°F 64°F 65°F 66°F

Off

Deadband

Setpoint

Deadband

On

On

NOTE: Deadband refers to a region where one end limit will turn the heating or cooling function on and the opposite end

limit will turn the heating or cooling function off.

Manual 2100-695
Page 14 of 54

To enable this delay:

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 Adv Sys
Config; press ENTER key.

4. Press UP or DOWN keys to scroll to FC Comp.
Delay B7.

5. Press ENTER key to scroll to Enable (see Figure

21).

6. Press UP or DOWN key to change the value.

7. Press ENTER key to save value and move cursor to
Delay.

8. Press UP or DOWN keys to change the time value.

9. Press ENTER key to save value and move cursor to
top of the screen.

10. Press ESCAPE key several times to return to Main
Menu screen.

FIGURE 21

Enabling Free Cooling Delay

when the return air temperature reaches the setpoint
plus the stage off differential.

Staging

The unit will stage the cooling components based on
the cooling demand referenced in the temperature
control. The unit will stage the economizer on first if
the indoor and outdoor conditions are favorable. The
compressor stage 1 will be enabled next as the demand
increases. Finally, the compressor stage 2 will be
enabled as the demand continues to increase.

The unit is only equipped with one stage of heat and
will turn on based on the heating demand.

To view unit stages:

1. From the Status screen, press UP or DOWN key
until Quick Menu displays Unit Information icon

( ). Press ENTER key.

2. The cooling and heating demand are visible on
this screen. The unit stages will display here when
active as FC, CL1, CL2 or H1 (see Figure 22).

FIGURE 22

Viewing Unit Stages

Cooling Sequence – Economizer Not Available

NOTE: This description is based on the example
shown in Figure 20 and Figure 23.

If the return air temperature is higher than 79°F
(Setpoint of 77°F + Stage 1 On Differential of 2°F),
the unit will enable mechanical cooling stage 1. If the
return air temperature is higher than 80°F (Setpoint
of 77°F + Stage 2 On Differential of 3°F), the unit
will enable mechanical cooling stage 2. Each stage
will then be disabled when the return air temperature
reaches the setpoint plus the stage off differential.

Heating Sequence

NOTE: This description is based on the example
shown in Figure 20 and Figure 23.

If the return air temperature is below 58°F (Setpoint
of 60°F + Stage 1 On Differential of -2°F), the unit
will enable electric heat stage 1. If the return air
temperature is below 57°F (Setpoint of 60°F + Stage
2 On Differential), the unit will enable electric heat
stage 2 (if available). Each stage will then be disabled

Adjusting Cooling Staging

This unit uses staging differentials to control cooling
operation. The on differential for a stage references
the number of degrees above the setpoint at which
the stage turns on. The off differential for a stage
references the number of degrees below the setpoint at
which the stage turns off.

To adjust cooling stage differentials:

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 Adv Sys
Config; press ENTER key.

4. Press UP or DOWN keys to scroll to Cooling Setup
B4.

5. Press ENTER key to scroll to Stage 1 On
Differential (see Figure 23 on page 16).

Press UP or DOWN keys to adjust number of

6.
degrees above setpoint to turn cooling operation on.

Manual 2100-695
Page 15 of 54

7. Press ENTER key to save value and move cursor to
Stage 1 Off Differential.

8. Press UP or DOWN keys to adjust number of
degrees below setpoint to turn cooling operation
off.

9. Press ENTER key to save value and move cursor to
next stage differential.

10. Repeat steps 6 through 9 for Stage 2 and Stage 3
differentials.

11. Press ESCAPE key several times to return to Main
Menu screen.

FIGURE 23

Adjusting Cooling Stage Differentials

Adjusting Heating Staging

This unit uses staging differentials to control heating
operation. The on differential for a stage references
the number of degrees below the setpoint at which
the stage turns on. The off differential for a stage
references the number of degrees above the setpoint at
which the stage turns off.

To adjust heating stage differentials:

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 Adv Sys
Config; press ENTER key.

4. Press UP or DOWN keys to scroll to Heating Setup
B5.

5. Press ENTER key to scroll to Stage 1 On
Differential (see Figure 24).

6. Press UP or DOWN keys to adjust number of
degrees below setpoint to turn heating operation
on.

7. Press ENTER key to save value and move cursor to
Stage 1 Off Differential.

8. Press UP or DOWN keys to adjust number of
degrees above setpoint to turn heating operation
off.

9. Press ENTER key to save value and move cursor to
next stage differential.

10. Repeat steps 6 through 9 for Stage 2 and Stage 3
differentials.

11. Press ESCAPE key several times to return to Main
Menu screen.

FIGURE 24

Adjusting Heating Stage Differentials

Dehumidification

The unit uses a dehumidification sequence that does
not require the electric heat to run at the same time
as the compressor. Instead, the unit will turn on the
compressor to cool down to the heating setpoint.
Once the lower setpoint has been reached, the unit
will heat the space back up to the upper setpoint.
This cycle continues until the humidity level in the
shelter reaches an acceptable level. At this point,
the unit will revert back to normal operation. The
economizer will also be disabled while the unit is in the
dehumidification mode.

NOTE: This feature is dependent upon the LC6000

indoor humidity sensors and a command
from the LC to enter dehumidification mode.
See the latest revision of LC6000 Service
Instructions 2100-669 for adjustment of the
dehumidification setpoint and differentials.

Electronic Expansion Valve (EEV)

EEV Components

Electronic Expansion Valve

The electronic expansion valve is a stepper motor that
is controlled with a step output from the controller. The
valve is capable of 480 steps represented by a 0-100%
signal on the controller. The motor drives a needle valve
that regulates the flow of refrigerant.

EEV Instructions for Vacuum, Reclaim, Charge Unit

The electronic expansion valve moves to the 20% open
position when the unit is not actively cooling. The
valve may need to be manually positioned for service or
troubleshooting. The valve can be positioned by using a
menu override.

Manual 2100-695
Page 16 of 54

To manually override the valve:

NOTE: The unit must be off to perform this override.

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 I/O Config;
press ENTER key.

4. Press UP or DOWN keys to scroll to EEV Service
C15.

Press ENTER key to scroll to Enable (see Figure 25).

5.

6. Press UP or DOWN key to change Disable to
Enable.

7. Press ENTER key to scroll to Position.

8. Press UP or DOWN keys to adjust to the desired
value.

9. Press ENTER key to save.

FIGURE 25

Overriding EEV Output

The valve can also be opened or closed using the EEV
service tool (Bard Part # 2151-021). This magnetic EEV
service tool (shown in Figure 26) is used to manually
open the EEV. To do this, remove the EEV stator coil (red
color with retaining nut on top), slide the magnetic tool
over the shaft where the stator was removed and turn in
a clockwise direction to open the valve to the full open
position (directional arrows are provided on the tool).
Opening the valve to the full open position will aid in the
refrigerant reclamation and evacuation processes.

With the stator removed, the resistance should be 40
ohms +/- 10%. There are two sets of three wires that
will have this resistance.

Reapply the EEV stator coil and retaining nut. Upon
powering the unit back up, the control board will
automatically drive the EEV back to the fully shut
position, and then back to the 20% open position
prior to starting the compressor back up. Once
the compressor starts, the control board will again
modulate the EEV position to control the system
superheat.

FIGURE 26

Electronic Expansion Valve (EEV) and Service Tool

EEV Stator

Coil

EEV

EEV Service

Tool

System Pressures

To view system pressure and temperatures during this
process:

1. From the Status screen, press UP or DOWN key
until Quick Menu displays Information icon
( ). Press ENTER key.

2. Press UP or DOWN keys to scroll to EEV 1 Circuit
and EVD 1 Compressor screens (see Figure 7 on
page 9).

3. Reference the Pressures and Temperatures on EVD
1 Compressor and the Superheat and Subcooling
on EEV 1 Circuit.

Suction Pressure Transducer

The unit has a pressure transducer installed on the
suction line between the evaporator coil and compressor.
The transducer is used for system monitoring of suction
system pressures. The sensor is used with the suction
temperature sensor to provide a real time superheat
calculation that determines the EEV position.

This sensor can be verified and adjusted by:

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 I/O Config;
press ENTER key.

4. Press UP or DOWN keys to scroll to Liquid Pr
Sensor C9.

5. Verify the measurement displayed on screen is
accurate (see Figure 27 on page 18).

6. If the measurement needs to be adjusted, apply an
offset value by pressing ENTER to scroll to Offset.

7. Press UP or DOWN keys to adjust the offset.

Manual 2100-695
Page 17 of 54

8. The update will not take effect until the cursor is
moved out of the Offset parameter.

9. Once adjusted, press the ESCAPE key several
times to return to Main Menu screen.

FIGURE 27

Adjusting Suction Pressure Transducer Values

Troubleshooting the Suction Pressure Transducer

0-250 psig

-5v Nominal .5 – 4.5v Actual

4v/250 psig = .016 volts per 1 psig

Example: 125 psig x .016 + .5 volts = 2.5 volts

Formula for Tech:
Measured Pressure x .016 + Sensor Offset = Expected
Transducer Signal Voltage (see Figure 28).

The suction temperature sensor measurement can be
verified and adjusted by:

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 I/O Config;
press ENTER key.

4. Press UP or DOWN keys to scroll to Suct Temp
Sensor C8.

5. Verify the measurement displayed on screen is
accurate (see Figure 29).

6. If the measurement needs to be adjusted, apply an
offset value by pressing ENTER to scroll to Offset.

7. Press UP or DOWN keys to adjust the offset.

8. The update will not take effect until the cursor is
moved out of the Offset parameter.

FIGURE 29

Adjusting Suction Temperature Sensor Values

FIGURE 28

Voltage to Pressure: Suction Pressure Transducer

Suction Pressure Alarm

When the suction pressure transducer value is out
of range (0-250 PSIG), the controller will generate
a sensor failure alarm to indicate the sensor is not
working properly.

This alarm cannot be adjusted.

Suction Temperature Sensor

The suction temperature sensor is used to calculate
superheat. The EEV uses this value to control the EEV.
The temperature is measured with a 10k ohm NTC
thermistor.

Suction Temperature Alarm

When the suction temperature sensor value is out of
range (-41.0 to 303.0°F), the controller will generate
a sensor failure alarm to indicate the sensor is not
working properly.

This alarm cannot be adjusted.

Evaporator Freeze Condition Alarm

The freeze alarm (evaporator coil freeze protection)
uses the suction temperature sensor to alarm and
manage operation when conditions are favorable for
an evaporator coil freeze condition. Whenever the
compressor is running, the system will constantly
monitor the suction line temperature. If the suction
line temperature falls below the freeze setpoint (32°F
factory default) for a period of time exceeding freeze
alarm delay time (120 seconds factory default), the
system will alarm a freeze condition. Once a freeze
condition is triggered, the system will stop the
compressor operation and increase the blower speed to
80% in order to rapidly warm and thaw the evaporator
coil. After the coil has reached a temperature above the
freeze alarm reset temperature setpoint (55°F factory
default) for a period of time exceeding the freeze alarm

Manual 2100-695
Page 18 of 54

reset hold time (5 minutes factory default), normal
operation will continue.

To adjust the freeze setpoint and/or alarm delay time:

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 System Config;
press ENTER key.

4. Press UP or DOWN keys to scroll to Alarm Setup
A7.

5. Press ENTER key to scroll to Alarm Setpoint (see
Figure 30).

6. Press UP or DOWN keys to change to the desired
value.

7. Press ENTER key to save the value and move
cursor to Alarm Delay.

8. Press UP or DOWN keys to change to the desired
Alarm Delay value.

9. Press ENTER key to save the value.

FIGURE 30

Adjusting Freeze Setpoint and Alarm Delay

EEV Operation

EEV Superheat Control

The electronic expansion valve (EEV) will modulate to
maintain a specific superheat (see Table 3) while the
compressor is running. When the compressor is not
running, the valve will open to 40% to allow system
equalization.

There are two forms of low superheat protection on
the FUSION-TEC WR Series units. One form will be
active once the superheat value is at or below 5°F. At
this point, the control will aggressively close the valve
to prevent flood back. The second form occurs at low
ambient temperatures. This control will slightly raise
the superheat setpoint based on outdoor temperature to
prevent system instability.

Additional EEV Alarms

Low Superheat Alarm

This alarm will become active when the calculated
superheat goes below 5°F. This alarm will clear itself
when the condition is no longer present.

This alarm cannot be adjusted.

Indoor Airflow

Indoor Airflow Components

Blower

The unit is equipped with a blower that is driven by
an electronically commutated motor (ECM). This
blower is controlled by a 0-10v signal provided from
the controller. This 0-10v signal is converted to a
PWM signal with an adapter. The blowers on both the
WR36BP* and WR58BP* models use a 10" diameter
wheel. The WR36BP* operates between 250-850 rpm
while the WR58BP* operates between 250-1400 rpm.

The blower output can be put into an override mode for
verification or troubleshooting. The override will last for
5 minutes or until the Blower Override parameter is set
to OFF again.

To put the blower into override:

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 I/O Config;
press ENTER key.

4. Press UP or DOWN keys to scroll to Blower Output
C12.

5. Press ENTER key to scroll to Blower Override (see
Figure 31).

TABLE 3

Unit Specific Superheat Settings

Unit Size Superheat

WR36 11°F

WR58 12°F

FIGURE 31

Putting Blower Output into Override Mode

Manual 2100-695
Page 19 of 54

6. Press UP or DOWN key to change OFF to ON.

7. Press ENTER key to scroll to OV Speed.

8. Press UP or DOWN keys to adjust the speed to the
desired output. See Table 4A or 4B.

9. Press ENTER key to save.

NOTE: If unit is operating at the time the blower

override is being enabled, adjustments must be
made to OV Speed first before switching Blower

Override on.

TABLE 4A

WR36BP* Blower Speeds

Mode

High Sensible

Full Load Cooling

High Sensible

Part Load Cooling

Standard Full

Load Cooling

Standard Part

Load Cooling

Economizer Standard
Economizer High S/T

Heating 63.0 6.3 v 1200

Dehumidification

Mode

Speed

Percentage

94.0 9.4 v 1500

54.0 5.4 v 1100

63.0 6.3 v 1200

43.0 4.3 v 950

90.0

63.0

19.0 1.9 v 470

Controller

Output Volts

9.0 v

6.3 v

CFM

1450
1200

TABLE 4B

WR58BP* Blower Speeds

Mode

High Sensible Full

Load Cooling

High Sensible Part

Load Cooling

Standard Full Load

Cooling

Standard Part Load

Cooling

Economizer Standard
Economizer High S/T

Heating 35.0 3.5 v 1335

Dehumidification

Mode

Speed

Percentage

75.0 7.5 v 2180

50.0 5.0 v 1705

55.0 5.5 v 1830

35.0 3.5 v 1335

45.0

75.0

35.0 3.5 v 1335

Controller

Output Volts

4.5 v

7.5 v

CFM

1600
1950

TABLE 5

Rated Airflow

Nominal Rated CFM

High Low

WR36BP* 1200 950 0.00

WR58BP* 1800 1400 0.10

Nominal Rated ESP

TABLE 6

Indoor Blower Performance

Speed High Low

ESP

(Inch H

WR36BP* 0.00

WR58BP* 0.10

Dry

0)

Coil

2

1260 1200 995 950

1885 1800 1470 1400

Wet
Coil

Dry

Coil

Wet
Coil

TABLE 7

Maximum ESP of Operation

Electric Heat Only

Model Static Pressure*

-A0Z

-A05

-B0Z

-B06

* Unit is rated for free blow non-ducted

operation with SGR-5W Supply Grille
and RGR-5W Return Grille.

.00"
.00"

.00"
.00"

Blower Status Switch

The unit is equipped with a differential pressure airflow
switch to monitor the blower (see Figure 31). If the
blower is turned on and the switch doesn't close to
indicate there is differential pressure between the inlet
and outlet of the blower, an alarm will be generated.
For switch settings, see Figure 32.

Differential airflow status can be viewed by:

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 I/O Config;
press ENTER key.

4. Press UP or DOWN keys to scroll to Digital In
Config C1.

5. Reference 7 NoAir row and Val column (see Figure

33).

Manual 2100-695
Page 20 of 54

FIGURE 32

Dirty Filter Switch and Blower Status Switch

(Set per Table 8)

(WR36 set @ .012)
(WR58 set @ .020)

Blower Status Alarm

If the blower is commanded on and the fan status
switch (differential pressure) has not indicated the fan
is running within 45 seconds, the system will generate
an alarm.

Disabling the blower status switch in I/O Config
disables this alarm.

This alarm is just a notification and will clear itself
when the conditions are no longer present.

To adjust the air flow alarm delay:

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 System Config;

press ENTER key.

4. Press UP or DOWN keys to scroll to Alarm Setup

A8.

5. Press ENTER key to scroll to Air Flow Alarm Del

(see Figure 34).

FIGURE 33

Verifying Differential Airflow Status

Adjusting Air Flow Alarm Delay

FIGURE 34

TABLE 8

Filter Switch Pressure Settings

Unit Filter Blockage % 0% 10% 20% 30% 40% 50% 60% 70%

WR36BP*

(Default) High S/T

WR36BP*

Standard Airflow

WR58BP*

(Default) High S/T

Switch Static Setting 0.12 0.12 0.12 0.20 0.20 0.35 0.35 0.40

Evaporator Airflow % 100% 99.3% 99.4% 98.7% 96.5% 92.1% 91.3% 87.9%

Switch Static Setting 0.12 0.12 0.12 0.12 0.20 0.20 0.20 0.30

Evaporator Airflow % 100% 99.3% 99.4% 98.8% 97.3% 91.5% 89.8% 88.3%

Switch Static Setting 0.40 0.50 0.60 0.70 0.75 0.80 0.90 1.00

Evaporator Airflow % 100% 98.7% 98.1% 97.5% 91.7% 81.3% 79.1% 78.6%

WR58BP*

Standard Airflow

All units tested equipped with MERV 8 filters. Appropriate supply (SG) and return (RG) grilles installed during testing.
Pressure switch adjustment may be necessary due to variations in filter type, installation and room pressure.

Bard recommends filter switch be set at 50% filter blockage or less. Higher settings may significantly hinder unit performance.

Switch Static Setting 0.30 0.35 0.40 0.45 0.50 0.65 0.70 0.90

Evaporator Airflow % 100% 99.8% 99% 98.5% 96.8% 89.9% 84% 82.2%

Manual 2100-695
Page 21 of 54

6. Press UP or DOWN keys to change to the desired
value.

7. Press ENTER key to save the value.

Filters

The unit is equipped with two (2) 20" x 30" x 2" MERV
8 filters. The filters slide into position making them easy
to service. The filters can be serviced from the outside
by removing either the right or left filter access panel.

Dirty Filter Switch

These units are equipped with a differential pressure
switch to indicate when the filter(s) needs to be
replaced (see Figure 32). The dirty filter switch
measures the pressure difference across the filter
through silicone tubing routed to the blower and vent
areas of the unit.

The switch circuit consists of a normally open filter
pressure switch. The switch will open when the
pressure differential goes above the setting indicated
on the dial. When the pressure difference returns below
the setting on the dial, the switch will close.

FIGURE 35

Dirty Filter Switch and Filter Indicator Light

Adjustment of dirty filter switch may be necessary to
ensure proper operation. See Table 8 and Figure 35 to
aid in setting the filter switch to operate at different
percentages of filter blockage.

Dirty Filter Alarm

The wall-mount unit is equipped with a differential
pressure switch input to the controller (see Figure 32).
When the switch indicates a dirty filter, the controller
will generate an alarm. Once the condition is no longer
present, the alarm will automatically clear. Additionally,
an indicator light will be turned on with the alarm and
turned off when the alarm clears (see Figure 35).

Disabling the dirty filter switch in I/O Config disables
this alarm.

The threshold of this alarm is adjusted by changing the
settings on the switch (see Table 8).

Filter Indicator Light

These units are equipped with a 24v indicator light
mounted on side of unit that displays the current status
of the filter (see Figure 35). When the light is on, the

ADJUSTMENT

INDICATOR ARROW

ADJUSTMENT

KNOB

TUBE LOCATED IN

AIRSTREAM AFTER FILTER

FILTER

LIGHT

SCREW TO
REMOVE COVER

COVER

Manual 2100-695
Page 22 of 54

TUBE LOCATED IN
AIRSTREAM BEFORE FILTER

MIS-3901

filter needs to be replaced. Once the filter(s) has been
changed, the indicator light will turn off.

Indoor Airflow Operation

High Sensible Mode

High sensible mode allows for higher airflow through
the indoor air section. In this mode, air circulation is
increased through the cooled space, but less moisture
is removed from the air circulating through the unit.

NOTE: High sensible enable on the wall-mount unit

will only toggle high sensible mode during
orphan mode operation. When connected to the
LC6000 controller, the high sensible mode will
be overridden by the controller operation.

To change these settings:

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 Adv System

Config; press ENTER key.

4. Press UP or DOWN keys to scroll to Blower CFM

Mode B6.

5. Press ENTER key to scroll to High Sensible (see

Figure 36).

6. Press UP or DOWN keys to change ON or OFF

value.

7. Press ENTER key to save.

FIGURE 36

Enabling High Sensible Mode

Additional Indoor Airflow Alarms

Supply Air Temperature Alarm

When the supply air temperature sensor value is out of
range (-41.0 to 303.0°F), the controller will generate
a sensor failure alarm to indicate the sensor is not
working properly.

This alarm is fixed and cannot be adjusted.

Condenser Fan

Condenser Fan Components

Condenser Fan

The unit is equipped with a condenser fan that is driven
by an electronically commutated motor (ECM). This
fan is controlled by a 0-10v signal provided from the
controller. The fan operates between 100-1200 rpm.

To view the output of the condenser fan:

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 I/O Config;
press ENTER key.

4. Press UP or DOWN keys to scroll to Cond. Fan
Output C14.

5. Reference Fan Speed parameter for the current
output to the condenser fan (see Figure 37).

FIGURE 37

Verifying Condenser Fan Output

Blower Speed Control

The blower is capable of changing speeds to best match
the requirements of the system depending on which mode
the system is in (see Table 4A or Table 4B on page 20).

The unit will automatically switch to the required
speed for each mode. High sensible mode and
dehumidification mode are both communicated
separately from the LC. For more information on the
high sensible command from LC, please see LC6000
Service Instructions 2100-669.

If required, the condenser fan output can be manually
set for 5 minutes for troubleshooting purposes. The
override will last for 5 minutes or until the Fan Override
parameter is set to OFF again.

To put the condenser fan into override:

1. Press ENTER key to scroll to the Fan Override
parameter (see Figure 37).

2. Press UP or DOWN keys to change the value from
OFF to ON.

3. Press ENTER key to save the value and move
cursor to OV Speed.

Manual 2100-695
Page 23 of 54

4. Press UP or DOWN keys to change the value to the
desired override speed.

5. The fan should now run at the selected speed. The
output can be verified by again referencing the Fan
Speed parameter.

NOTE: If unit is operating at the time the fan override

is being enabled, adjustments must be made to
OV Speed first before switching Fan Override on.

Due to design considerations of the condenser section
of the wall-mount unit, placement/clearance of the
motor/fan blade is critical to heat dispersal. Should a
change of motor or fan blade be necessary, see Figure
38 for proper clearance adjustment.

FIGURE 38

Fan Blade Setting

.75" (from the closest point on the fan blade)

7. Press UP or DOWN keys to adjust the offset. The
update will not take effect until the cursor is
moved out of the offset parameter.

8. Once adjusted, press the ESCAPE key several
times to return to Main Menu screen.

FIGURE 39

Adjusting Liquid Pressure Transducer Values

Troubleshooting the Liquid Pressure Transducer

0-650 psig
0-5v
4v/650 psig = .00615 volts per 1 psig

Example: 325 psig x .00615 + .5 v = 2.5 volts

Formula for Tech:
Measured Pressure x .00615 + Sensor Offset =
Expected Transducer Signal Voltage (see Figure 40).

Liquid Line Pressure Transducer

The unit has a pressure transducer installed on the
liquid line between the condenser and electronic
expansion valve (EEV). The transducer is used for
system monitoring of the liquid side system pressures.
This information is used to indicate when outdoor coil
cleaning is necessary based on outdoor conditions and
system pressures. The sensor is also used to adapt
the condenser fan speed for high and low ambient
conditions. The liquid line transducer is also referred to
as the discharge pressure sensor.

The discharge pressure sensor input can be verified and
adjusted by:

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 I/O Config;
press ENTER key.

4. Press UP or DOWN keys to scroll to Liquid Pr
Sensor C9.

5. Verify the measurement displayed on screen is
accurate (see Figure 39).

6. If the measurement needs to be adjusted, apply an
offset value by pressing the ENTER key to scroll to

Offset.

FIGURE 40

Voltage to Pressure:

Liquid Pressure Transducer

Liquid Pressure Transducer Alarm

When the liquid line pressure sensor value is out
of range (0-650 PSIG), the controller will generate
a sensor failure alarm to indicate the sensor is not
working properly.

This alarm is fixed and cannot be adjusted.

Liquid Temperature Sensor

The unit is equipped with a liquid line temperature
sensor to monitor the temperature of the liquid
refrigerant leaving the condenser and entering the EEV.

Manual 2100-695
Page 24 of 54

The temperature is measured with a 10k ohm NTC
thermistor.

The liquid temperature sensor can be verified and
adjusted by:

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 I/O Config;

press ENTER key.

4. Press UP or DOWN keys to scroll to Liquid Temp

Sensor C2.

5. Reference the Value to verify the temperature (see

Figure 41).

FIGURE 41

Adjusting Liquid Temperature Values

6. If an offset needs to be applied, press ENTER key

to scroll to Offset.

7. Press UP or DOWN keys to change the offset to

desired value.

8. Press ENTER key to save.

9. Press ESCAPE key several times to return to Main
Menu screen.

Condenser Fan Operation

Condenser Fan Speed Control

The unit is equipped with a variable speed ECM
(electronically commutated motor) condenser fan which
allows the unit to better control head pressures for
more efficient operation. The fan will speed up or slow
down to attempt to maintain a liquid line pressure.
The pressure setpoint that the fan will control to is
determined by the outdoor air temperature. The unit
will allow the liquid line pressure setpoint to increase
for high ambient scenarios or decrease for low ambient
scenarios. Because the control is dependent on both
the outdoor temperature sensor and the liquid line
pressure sensor, the controller will alter its operation
if a sensor is not enabled or failed. When the outdoor
temperature sensor is not enabled or is considered
failed by the controller, a nominal setpoint of 430
psi is used for fan control. When the liquid pressure
transducer is not enabled or is considered failed by the
controller, a nominal fan speed will be used during a
compressor call. See Figure 42.

The condenser fan requires the compressor to be
running in order to operate.

High Pressure Control

Condenser Fan Speed

When the liquid pressure reaches 550 PSI, the
condenser fan will speed up, moving as much air as
possible in an attempt to reduce system pressures. The
condenser fan will operate at increased speed until the
liquid pressure reaches 450 PSI. At this point, the fan
will return to normal operating speed.

FIGURE 42

Liquid Pressure Control Setpoint

Manual 2100-695
Page 25 of 54

Second Stage Drop Out

If the liquid pressure reaches 620 PSI, the second
stage of cooling will be disabled for the remainder
of the current cooling call. This reduces the risk of
tripping the high pressure switch, while still allowing
cooling.

Low Ambient Control

At low ambient outdoor air temperatures, the fan motor
will cycle as a means of controlling the system's head
pressure to protect the system from evaporator coil freeze
conditions. The process for this system is as follows: If
the liquid pressure falls below 275 PSI, the condenser
fan will turn off. The fan will remain off while the
compressor remains running, allowing the head pressure
to build up. Once the liquid pressure reaches 350 PSI,
the fan will then turn back on at the appropriate speed.
At lower ambient outdoor temperatures, this may cycle
regularly as normal operation. In some cases, in higher
wind prone areas, the condenser fan may stay off for
prolonged durations due to low liquid pressures.

Compressor

Compressor Components

Compressor

Three Phase Scroll Compressor Start Up Information

Scroll compressors, like several other types of
compressors, will only compress in one rotational
direction. Direction of rotation is not an issue with
single phase compressors since they will always start
and run in the proper direction.

However, three phase compressors will rotate in either
direction depending upon phasing of the power.
Since there is a 50-50 chance of connecting power
in such a way as to cause rotation in the reverse
direction, verification of proper rotation must be made.
Verification of proper rotation direction is made by
observing that suction pressure drops and discharge
pressure rises when the compressor is energized.
Reverse rotation also results in an elevated sound level
over that with correct rotation, as well as substantially
reduced current draw compared to tabulated values.

Verification of proper rotation must be made at the time
the equipment is put into service. If improper rotation
is corrected at this time, there will be no negative
impact on the durability of the compressor. However,
reverse operation for over 1 hour may have a negative
impact on the bearing due to oil pump out.

NOTE: If compressor is allowed to run in reverse

rotation for an extended period of time, the
compressor’s internal protector will trip.

All three phase compressors are wired identically
internally. As a result, once the correct phasing is
determined for a specific system or installation,
connecting properly phased power leads to the same
Fusite terminal should maintain proper rotation direction.

The direction of rotation of the compressor may be
changed by reversing any two line connections to the
wall-mount unit.

Compressor Control Module (CCM)

Delay-on-Make Timer
Short Cycle Protection/Delay-on-Break
Test Mode
High Pressure Detection
Brownout Protection with Adjustment

The LPC terminals are jumpered in this application.
Instead, the low pressure transducer is used for low
pressure monitoring.

Delay-on-Make Timer

In the event of power loss, a delay-on-make timer is
included to be able to delay startup of the compressor.
This is desired when more than one unit is on a
structure so that all of the units do not start at the
same time which could happen after a power loss or
building shutdown. The delay-on-make time period is
2 minutes plus 10% of the delay-on-break time period.
To ensure that all of the units do not start at the same
time, adjust the delay-on-break timer on each unit to a
slightly different delay time.

Short Cycle Protection/Delay-on-Break

An anti-short cycle timer is included to prevent short
cycling the compressor. This is adjustable from 30
seconds to 5 minutes via the adjustment knob (see Figure

43). Once a compressor call is lost, the time period must
expire before a new call will be initiated.

10% of this time is also considered on the delay-on­make timer (see above).

High Pressure Detection

High pressure switch monitoring allows for a lockout
condition in a situation where the switch is open. If the
high pressure switch opens, the CCM will de-energize
the compressor. If the switch closes, it will then restart
the compressor after the delay-on-break setting has
expired on the device. If the switch trips again during
the same Y call, the compressor will be de-energized.
The ALR terminal will be energized signaling the unit
control board that a high pressure event has occurred
(see Refrigerant High Pressure Alarm on page 28).

Test Mode

By rapidly rotating the potentiometer (POT) clockwise
(see Figure 43), all timing functions will be removed
for testing.

The conditions needed for the unit to enter test mode
are as follows: POT must start at a time less than or
equal to the 40 second mark. The POT must then be
rapidly rotated to a position greater than or equal to
the 280 second mark in less than ¼ second. Normal
operation will resume after power on reset or after the
unit has been in test mode for at least 5 minutes.

Manual 2100-695
Page 26 of 54

FIGURE 43

8201-164 Compressor Control Module

High Pressure Switch Compressor Contactor Output

18-30 VAC Input

Y Input from Thermostat

and High Pressure Switch

Troubleshooting Light

Jumper

Brownout Protection with Adjustment

Brownout protection may be necessary if the utility
power or generator power has inadequate power to
prevent the voltage from dropping when the compressor
starts. This is rare but can happen if the generator
is undersized at the site or if the site is in a remote
location far from the main power grid. Under normal
circumstances, allowing the brownout to be ignored for
a time period should not be needed. The 8201-164 is
shipped with all the DIP switches in the 'off' or 'do not
ignore' position (see Figure 43).

If ignoring the brownout is needed because of the
above conditions, three preset timers can be set by DIP
switches in order to delay signaling a power brownout
for a specific length of time after compressor contactor
is energized. This allows the compressor a time period
to start even if the voltage has dropped and allows the
voltage to recover. This delay only happens when the
CC terminal energizes. The delay can be set to 500
milliseconds (A DIP switch), 1000 milliseconds (B DIP
switch) or 1500 milliseconds (C DIP switch); time is
not cumulative—only the longest setting will apply. If

Alarm Output

Common

Delay-on-Break Time
Adjustment Potentiometer

Brownout Ignore Time DIP Switches*

* Turn on only one switch for that specific ignore time setting

the voltage recovers during the brownout time period,
the compressor will start.

If a brownout condition is detected by the 8201-164,
the troubleshooting light will flash blue. The light will
continue to flash until the cooling call is satisfied or
power is removed from the Y terminal. This condition
does not prevent operation, it only indicates that a
brownout condition was present at some point during
the cooling call. If a brownout condition is detected,
CC will be de-energized and will retry after the delay­on-make timer is satisfied; this process will continue
until call is satisfied.

If user chooses the 'do not ignore' position when the
site has inadequate utility or generator power, this
could lead to the compressor never starting. The
control will

see the brownout immediately and not start.

A common scenario and one that has been seen in the
field is when a unit or units switches from utility power
to generator power. With slower transfer switches, the
time delay between the utility power and generator power
didn’t cause a problem. The units lost power, shut off
and came back on line normally. With the introduction of

Manual 2100-695
Page 27 of 54

almost instantaneous transfer switches, the millisecond
long power glitch can be enough that the compressor will
start to run backwards. In this scenario, the CCM will
catch this and restart the units normally.

High Pressure Safety Switch

All units have a high pressure switch as a safety device.
This device will open when pressure in the system
reaches 650 PSIG. The sensor is directly connected
to the dedicated compressor control module (see High

Pressure Detection on page 26).

Refrigerant High Pressure Alarm

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 with TEC-EYE
hand-held diagnostic tool.

In addition to the CCM, the discharge pressure
transducer is used to prevent a high pressure event.
When the discharge pressure is above the discharge
pressure alarm setpoint (set 30 PSI below high
pressure switch, which is 650 PSI), the system will
disable stage 2 of mechanical cooling.

Phase Monitor

Used only on three phase equipment, the phase
monitor is a compressor protection device that will
prohibit operation of the compressor if the device senses
a possible reverse-rotation situation due to incorrect
phasing. On a call for compressor (and only compressor),
the device will check incoming phase, check for severe
voltage imbalance and check for proper frequency.
Under nominal conditions, a green LED light will show
on the face of the monitor. If there is improper phasing,
voltage imbalance or frequency deviation, the device will
show a red LED light and prohibit compressor operation.

If a fault condition occurs, reverse two of the supply
leads to the unit. Do not reverse any of the unit factory

wires as damage may occur.

Compressor Operation

The compressor will be enabled when the unit (in
orphan mode) or LC provide a cooling stage 1 call. The
compressor call from the controller has several delays
that may affect the start or stop time of the compressor
in regards to the cooling demand. The compressor has
a minimum on time of 120 seconds to prevent short
cycling the compressor. The compressor also has a
minimum off time of 120 seconds to prevent start
ups before the pressure in the refrigeration system
equalizes. When the second stage is engaged, it also
has a minimum run time of 120 seconds to allow the
system to stabilize before returning to single stage or
shutting down.

These delays can be changed by:

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 Adv System
Config; press ENTER key.

4. Press UP or DOWN keys to scroll to Compressor
Config B2.

5. Press ENTER key to scroll to Min On or Min Off
(see Figure 44).

6. Press UP or DOWN keys to change the value.

7. Press ENTER key to save value and move the
cursor to next parameter or top of screen.

8. Press ESCAPE key several times to return to Main
Menu screen.

FIGURE 44

Adjusting Compressor Delays

The address-based delay only applies to the wall-mount
unit when in orphan mode. The controller will delay the
unit compressor based on the value entered on screen
B2 multiplied by the unit address. This is intended to
keep multiple units from starting their compressors
at the same time when there is a quick change in the
load. When connected to the LC, this is taken care of
by LC logic.

Compressor Low Temperature Limit

The unit has the ability to protect the compressor
from refrigerant flood-back in low outdoor temperature
conditions (0°F default). This will be automatically
enabled, unless the economizer is disabled by the
model number. This function can also be enabled/
disabled, and limit temp changed by the user.

To adjust compressor low temp limit:

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 Adv System
Config; press ENTER key.

4. Press UP or DOWN keys to scroll to Compressor
Config B3.

Manual 2100-695
Page 28 of 54

5. Press ENTER key to scroll to Comp. Limit (see
Figure 45).

6. Press UP or DOWN keys to change ON or OFF
value.

7. Press ENTER key to save value and move the
cursor to Cutoff Temp.

8. Press UP or DOWN keys to adjust temperature.

9. Press ENTER key to save value.

10. Press ESCAPE key several times to return to Main
Menu screen.

FIGURE 45

Adjusting Compressor Low Temp Limit

Additional Compressor Alarms

Refrigerant Low Pressure Alarm

When the suction pressure transducer indicates a
pressure value below the low pressure alarm setpoint of
40 PSI and the compressor has been running for more
than 180 seconds, or the suction pressure is pulled
into a vacuum for more than 20 seconds, the controller
will disable the compressor. NOTE: The second call

will be delayed based on the delay off value mentioned
in the compressor section. The controller will try to

run the refrigeration system two (2) times within
3600 seconds (1 hour) before the alarm will lock the
compressor out. This alarm needs to be manually
cleared before compressor operation will resume.

To adjust the low pressure alarm settings:

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 System Config;
press ENTER key.

4. Press UP or DOWN keys to scroll to Alarm Setup
A6.

5. Press ENTER key to scroll to Delay to adjust how
long the compressor waits before turning the
compressor off (see Figure 46).

6. Press UP or DOWN keys to adjust the time delay.

7. Press ENTER key to scroll to Two Count Delay.

8. Press UP or DOWN keys to adjust the delay value.

9. Press ENTER key to save.

10. Press the ESCAPE key several times to return to
Main Menu screen.

FIGURE 46

Adjusting Low Pressure Alarm Settings

Economizer

Economizer Components

Actuator

The actuator rotates up to 90° based on a 2-10v signal
sent to it by the controller. The actuator is rated at
90 in-lb and is spring return when power is lost. This
component is what opens and closes the damper blade.

To verify the output from the controller to the actuator:

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 I/O Config;
press ENTER key.

4. Press UP or DOWN keys to scroll to Damper Output
C13.

5. Reference the Damper Position for the current
output to the damper (see Figure 47).

FIGURE 47

Damper Output and Override

6. To override the current position, press ENTER key
to scroll to OV Pos.

7. Press UP or DOWN keys to change the value to the
desired output.

Manual 2100-695
Page 29 of 54

8. Press ENTER key to save the value and move
cursor to Damper Override.

9. Press UP or DOWN keys to change the value from
OFF to ON.

10. The Damper Position will update with the new
override value and the damper will travel to that
position.

The override will last for 5 minutes or until the Damper
Override parameter is set to OFF again.

NOTE: If unit is operating at the time the damper

override is being enabled, adjustments must be
made to OV Speed first before switching Damper

Override on.

Dust Sensor

The unit has a dust sensor installed near the outdoor air
inlet. The dust sensor checks for excessive particulates
in the outdoor air, and will close the economizer if
the dust is excessive. The sensor uses a PWM signal
converted to 0-5v output to the controller.

To ensure proper performance, cleaning may be
required. Vacuuming or blowing the dust off the sensor
with forced air is recommended. Avoid inserting any
objects into the sensor.

The dust sensor can be verified by:

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 I/O Config;
press ENTER key.

4. Press UP or DOWN keys to scroll to Dust Sensor
C7.

5. Reference the Value for the current sensor reading
(see Figure 48).

FIGURE 48
Dust Sensor

NOTE: The sensor can be disabled if required for

troubleshooting.

9. Press ENTER key to scroll to Enable parameter.

10. Press UP or DOWN keys to change the value from
ON to OFF.

11. Press ENTER key to save.

Dust Sensor Failure Alarm

When the sensor reads a value that is outside of
the acceptable 0 to 100% range, an alarm will be
generated indicating the sensor has failed. This alarm
is just a notification and will not disable any other
features on the controller.

This alarm is fixed and cannot be adjusted.

High Dust Limit Alarm

When dust content in the air is high and is a risk
to prematurely reducing airflow through the filters,
the unit will restrict the use of the economizer. The
controller has adjustable software setpoints (default to
80%) to indicate dust levels are too high and to disable
the economizer operation for 5 minutes (unit default).
This alarm is not communicated to the NOC. Once
the conditions are no longer present, the alarm will
automatically clear.

Disabling the dust sensor in I/O Config disables this
alarm.

To adjust the dust sensor alarm setpoint:

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 System Config;
press ENTER key.

4. Press UP or DOWN keys to scroll to Alarm Setup
A9.

5. Press ENTER key to scroll to Setpoint (see Figure

49).

6. Press UP or DOWN keys to change to the desired
value.

7. Press ENTER key to save the value.

6. To apply an offset to the current reading, press
ENTER key to scroll to Offset.

7. Press UP or DOWN keys to adjust the value to the
desired value.

8. Press ENTER key to save the value and move
cursor back to top of screen.

Manual 2100-695
Page 30 of 54

FIGURE 49

Adjusting Dust Sensor Alarm Setpoint

NOTE: When the temperature outside is measured

at or below 0°F, the dust sensor alarm will be
disabled to allow economizer operation. This
is done because the compressor is disabled
below 0°F and the system would not have the
capability to cool.

Damper Blade

The system utilizes three damper blades used to bring
in outdoor air and exhaust space air for economizer
operation. The damper blades are made of sheet metal
and are integrated into the equipment.

Minimum Damper Position

This unit has a minimum damper position feature to
vent the space and intake fresh air whenever the blower
is operating. This feature operates separately from free
cooling operation and minimum position should not
be set to a higher position than needed, as it is not
controlled by room or outdoor conditions. This feature
is disabled by default, but is available if needed.

To enable/disable/adjust the minimum damper position:

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 System Config;

press ENTER key.

4. Press UP or DOWN keys to scroll to Economizer

Setup A3.

5. Press ENTER key to scroll to Minimum Position

Enable (see Figure 50).

6. Press UP or DOWN keys to change ON or OFF

value.

7. Press ENTER key to save value and move the

cursor to Position.

Press UP or DOWN keys to adjust the minimum

8.

position value.

9. Press ENTER key to save value.

10. Press ESCAPE key several times to return to Main

Menu screen.

FIGURE 50

Adjusting Minimum Damper Position

Damper Switch

The economizer utilizes a magnetic switch to determine
if the damper is operating correctly. This switch will be
closed when the damper is closed and open when the
damper is open.

To verify the status of the switch:

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 I/O Config;
press ENTER key.

4. Press UP or DOWN keys to scroll to Digital In
Config C1.

5. Reference the value located at Damper row and Val
column (see Figure 51).

6. The input will display ON when the damper is
closed (reflecting closed circuit on damper switch)
and will display OFF when the damper is open
(reflecting open circuit on damper switch).

FIGURE 51

Damper Switch

Damper Failed to Open Alarm

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 the controller will generate a damper
failed to open alarm. This alarm is just a notification
and will not disable any features on the controller.

Disabling the damper switch in I/O Config disables this
alarm.

To adjust the damper failed to open delay:

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 System Config;
press ENTER key.

4. Press UP or DOWN keys to scroll to Alarm Setup
A4.

5. Press ENTER key to scroll to Open Delay (see
Figure 52 on page 32).

Manual 2100-695
Page 31 of 54

6. Press UP or DOWN keys to change to the desired
value.

7. Press ENTER key to save the value.

FIGURE 52

Adjusting Damper Alarm Delay

The outdoor temperature can be verified by:

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 I/O Config;
press ENTER key.

4. Press UP or DOWN keys to scroll to Outdoor Air
Sensor C3.

5. Reference the Value to see the input of the sensor
(see Figure 54).

6. To apply an offset, press ENTER key to scroll to
Offset.

7. Press UP or DOWN keys to change to the desired
value.

8. Press ENTER key to save the value.

Damper Failed to Close 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 the controller will generate a damper failed
to close alarm. This alarm will disable all functions of
the unit and the status message will display "Off by
Alarm". If the condition is remedied, the alarm will
automatically reset and the unit will resume normal
operation.

Disabling the damper switch in I/O Config disables this
alarm.

To adjust the damper failed to close delay:

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 System Config;
press ENTER key.

4. Press UP or DOWN keys to scroll to Alarm Setup
A4.

5. Press ENTER key to scroll to Close Delay (see
Figure 52).

6. Press UP or DOWN keys to change to the desired
value.

7. Press ENTER key to save the value.

Outdoor Temperature and Humidity Combination
Sensor

The unit is equipped with a combination outdoor
temperature and humidity sensor to monitor
outdoor conditions for the economizer operation.
The temperature is measured with a 10k ohm NTC
thermistor. The humidity is measured with a humidity
sensor that outputs a 4-20mA signal to the controller.
Troubleshooting information for this sensor is included
in the Troubleshooting section of this manual.

FIGURE 53

Outdoor Air Sensor

The outdoor humidity can be verified by:

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 I/O Config;
press ENTER key.

4. Press UP or DOWN keys to scroll to Outdoor Hum
Sensor C6.

5. Reference the Value to see the input of the sensor
(see Figure 54).

FIGURE 54

Outdoor Humidity Sensor

Manual 2100-695
Page 32 of 54

6. To apply an offset, press ENTER key to scroll to
Offset.

7. Press UP or DOWN keys to change to the desired
value.

8. Press ENTER key to save the value.

Outdoor Temperature Sensor Failure Alarm

When the sensor reads a value that is outside of the
acceptable -41 to 303.0° range, an alarm will be
generated indicating the sensor has failed. This alarm
condition will disable the economizer.

This alarm is fixed and cannot be adjusted.

Outdoor Humidity Sensor Failure Alarm

When the sensor reads a value that is outside of the
acceptable 0 to 100% RH range, an alarm will be
generated indicating the sensor has failed. This alarm
condition will disable the economizer when the mode is
set to temperature and humidity or enthalpy.

This alarm is fixed and cannot be adjusted.

Supply Temperature Sensor

The unit is equipped with a supply air temperature
sensor to monitor the leaving air temperature of the
unit. The temperature is measured with a 10k ohm
NTC thermistor.

The supply air temperature can be verified by:

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 I/O Config;
press ENTER key.

4. Press UP or DOWN keys to scroll to Supply Air
Sensor C5.

5. Reference the Value to see the input of the sensor
(see Figure 55).

6. To apply an offset, press ENTER key to scroll to
Offset.

7. Press UP or DOWN keys to change to the desired
value.

8. Press ENTER key to save the value.

FIGURE 55

Supply Air Sensor

Supply Temperature Sensor Failure Alarm

When the sensor reads a value that is outside of the
acceptable -41.0 to 303.0° range, an alarm will be
generated indicating the sensor has failed.

This alarm is fixed and cannot be adjusted.

High Supply Air Temperature Alarm

When the supply air temperature is above 80°F for
120 seconds, an alarm will be generated and the
economizer will be disabled until the cooling call has
been removed. This alarm can only be activated during
free cooling and will automatically reset once the
economizer is no longer disabled.

To change the high supply air temperature alarm:

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 System Config;
press ENTER key.

Press UP or DOWN keys to scroll to Alarm Setup A5.

4.

5. Press ENTER key to scroll to Hi and Diff value (see
Figure 56).

6. Press UP or DOWN keys to change the differential
to the desired value.

7. Press ENTER key to save the value.

FIGURE 56

Adjusting Supply Air Temperature Differential

Low Supply Air Temperature Alarm

When the supply air temperature is below 45°F for
120 seconds, an alarm will be generated and the
economizer will be disabled until the cooling call has
been removed. This alarm can only be activated during
free cooling and will automatically reset once the
economizer is no longer disabled..

To change the low supply air temperature alarm:

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 System Config;
press ENTER key.

Manual 2100-695
Page 33 of 54

4. Press UP or DOWN keys to scroll to Alarm Setup
A5.

5. Press ENTER key to scroll to Lo and Diff value (see
Figure 56 on page 33).

6. Press UP or DOWN keys to change the differential
to the desired value.

7. Press ENTER key to save value and scroll to Delay.

8. Press UP or DOWN keys to adjust the delay value.

NOTE: This delay is also applied to the high supply air

temperature alarm.

9. Press ENTER key to save.

Economizer Operation

The economizer has four types of operation. The first
mode is "None" where the economizer is never utilized,
except for emergency purposes. The second mode is
"Dry Bulb" where the outdoor temperature is the only
consideration for economizer use on a free cooling
call. The third mode is "TempHum" where the outdoor
temperature and humidity are considered for economizer
use on a free cooling call. The fourth mode is "Enthalpy"
where the outdoor temperature, humidity and calculated
dew point are considered for economizer operation on a
free cooling call.

To change the economizer type and setpoints:

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 System Config;
press ENTER key.

4. Press UP or DOWN keys to scroll to Economizer
Setup A2.

5. Press ENTER key to scroll to Control Type (see
Figure 57).

6. Press UP or DOWN keys to change the Type
desired value to None, Dry Bulb, TempHum or
Enthalpy.

7. Press ENTER key to save the value and scroll to
the next parameter.

FIGURE 57

Economizer Setup A2

NOTE:

8. If control type is other than None, the cursor

9. Press UP or DOWN keys to change the parameter

10. Press ENTER key to save the value and scroll to

11. Press UP or DOWN keys to change the (outdoor

12. Press ENTER key to save the value and move to

13. If control type is TempHum or Enthalpy, the cursor

14. Press UP or DOWN keys to change the parameter

16. Press UP or DOWN keys to change the (outdoor

17. Press ENTER key to save the value and move to

18. If control type is Enthalpy, the cursor should now

19. Press UP or DOWN keys to change the parameter

20. Press ENTER key to save the value and move to

21. Press UP or DOWN keys to change the (outdoor

22. Press ENTER key to save the value.

To change economizer settings:

1. Press MENU key to go to the Main Menu screen.

2. Press UP or DOWN keys and ENTER key to enter

3. Press UP or DOWN keys to scroll to System Config;

4. Press UP or DOWN keys to scroll to Economizer

5. Press ENTER key to scroll to Mixed Air Temp (see

6. Press UP or DOWN keys to change the parameter

7. Press ENTER key to save the value and move to

8. Press UP or DOWN keys to change the

9. Press ENTER key to save the value.

Some of the following parameters may not be
present until the control type that it is used with
is selected.

should now be on the OD Temp Set parameter.

to the desired value.

the next parameter.

temperature) Off Diff parameter to the desired
value.

the next parameter.

should now be on Humidity Set parameter.

to the desired value.

humidity) On Diff parameter to the desired value.

the next parameter.

be on Dew Pt Set parameter.

to the desired value.

the next parameter.

dew point) On Diff parameter to the desired value.

USER password 2000.

press ENTER key.

Setup A3.

Figure 58).

to the desired value.

the next parameter.

(economizer) Delay parameter to the desired value.

Manual 2100-695
Page 34 of 54

10. Press ESCAPE key several times to return to Main

Menu screen.

NOTE:

The economizer delay parameter adjusts the
time the OD Temp Set, Humidity Set and Dew Pt
Set measurements (found on screen A2) can be
outside of the disabling parameters before the
economizer operation is disabled.

FIGURE 58

Economizer Setup A3

See Table 9 for default settings for economizer
operation.

When the economizer is activated during a free cooling
call only, using any of the previously mentioned modes,
a 0-10v analog signal will be sent to the economizer
actuator. The actuator will then open and close the
damper blades to maintain a supply air temperature of
55°F. If the economizer is active during optimized cooling
mode, the actuator will maintain a mixed air temperature
of 55°F. When the supply/mixed air temperature
increases, the damper will open and when the mixed air
temperature decreases, the damper will close.

The economizer may be disabled by the LC if the
system determines it needs to enter dehumidification
mode. More information about the dehumidification
sequence can be found on page 15 and in the latest
revision of LC6000 Service Instructions 2100-669.
In addition to dehum mode, the economizer may be
disabled for 5 minutes (adjustable) if the dust sensor
indicates the outdoor air may cause particulate buildup

in the air filters. After the time has expired and on a call
for cooling, the economizer will open again to sample
the air. The wall-mount unit will either return to normal
operation or remain locked out for another 5 minutes.

Emergency Cooling Mode

If the shelter temperature is above the high temperature
alarm setpoint on the LC, the unit will be commanded
into emergency cooling mode. In this mode, the
unit will operate the economizer regardless of the
economizer setup, as long as the outdoor temperature is
below the indoor temperature. The cooling demand will
be automatically set to 100% in this mode, meaning
mechanical cooling should be operating at full capacity
while this mode is active. This will stay active until the
LC returns the unit to normal operation. This mode is
only available when connected to the LC.

Emergency Ventilation Mode

If a hydrogen detector is connected to the LC/WR Series
system and there is a hydrogen alarm event, the system
will go into emergency ventilation mode. In emergency
ventilation mode, the economizers on the wall units will
be commanded to 100%. After 2 minutes, the blowers
will turn on in order to exhaust any hydrogen gas buildup
within the shelter. Once the hydrogen alarm clears, the
system will resume normal operation. This mode is only
available when connected to the LC.

Model/Serial Number Configuration

FUSION-TEC WR Series wall-mount units configure
some settings based on the model number that is input
into the unit. The model and serial number are entered
at the factory, and should be retained during a software
update. However, after a software update, it is best
practice to verify that the model and serial number is
still present and accurate. If the model and/or serial
number is missing or incorrect they will need to be re­entered.

NOTE: When re-entering the model number, only valid

model number entries will be accepted by the
PLC.

TABLE 9

Economizer Default Settings

Mode Consideration Economizer Available for Cooling Economizer Not Available for Cooling

Only

Temp

Temp & Humidity

* In Enthalpy mode, outdoor temperature, humidity and calculated dew point are all considered for economizer operation.

Temperature

Humidity

Enthalpy*

Dew Point

When the outdoor air temperature

is below 70°F

LC Online: When the outdoor humidity

is below 80%

LC Offline: When the outdoor humidity

is below 60%

When the outdoor dew point

is below 55°F

When the outdoor air temperature

is above 75°F

LC Online: When the outdoor humidity

is above 80%

LC Offline: When the outdoor humidity

is above 60%

When the outdoor dew point

is above 60°F

Manual 2100-695
Page 35 of 54

To update model/serial numbers:

1. Press MENU key to go to the Main Menu screen.

2. Press UP or DOWN keys and ENTER key to enter
ENGINEER password 9254.

3. Press UP or DOWN keys to scroll to Adv Sys
Config; press ENTER key.

4. Press UP or DOWN keys to scroll to Model/Serial
Set B1.

5. Press ENTER key to advance the cursor to the digit
that needs changed in the model/serial number.

Press UP or DOWN keys to change value of the digit.

6.

NOTE: The characters are in ASCII format and some

digits may not have a character assigned to
them. This will required pressing the UP or
DOWN key until these characters are passed.

7. Continue Steps 5 and 6 until the model/serial
number(s) are correct and reflect the number on
the product label.

For more information on the options and settings
available for specific model numbers, please see the
model number breakdown in Figure 59.

Electric Heat Option

Electric Heat Components

Electric Heating Element

The unit is optionally equipped with a 1.5kw or 5kw
heat strip. The heat strip is located next to the blower
assembly and uses resistive heat.

Thermal Overload

The heater assembly has a thermal overload wired in
series with the heating element. This device has a
cycling limit which opens at 130°F and resets at 80°F.
The limit is also equipped with a redundant thermal
fuse that will open at 150°F.

connection is wired to terminals 5 and 6 on the wall­mount unit. See the latest revision of BG1000 Installation
Instructions 2100-672 for directions on connecting the
wall-mount units to the BG1000 controller.

Smoke Detector Unit Disable Option

The unit is equipped with an input that can be used
with a smoke detector or unit disable switch with a dry
contact. When this input indicates a smoke event, the
system will be shut down. The alarm will automatically
clear when the alarm condition is no longer present.

Inverter Option

The inverter is only used in applications where a generator
is not present and the wall-mount units must run during
a power loss event. The inverter will always keep power
available to the wall-mount units during a power outage.
In the event of a power outage, a power loss relay in the
wall-mount unit will be energized and will only allow
the blower and economizer to run while powering the
controller. The inverter converts either 24 VDC or 48
VDC, depending on the model, to 230 VAC. A relay
output from the inverter will also communicate an alarm
to the supervisory controller in the event of an inverter
failure. This variable can be communicated through the
Ethernet port for integration into a building management
system. The units will continue to run in economizer-only
operation until power has been restored or the battery
power has been depleted.

When the wall-mount unit is operating under inverter
power, shelter economizer cooling will only occur if
outside temperatures fall below indoor temperatures and
blower speeds are slightly reduced to conserve battery
power.

Electric Heat Operation

The heat strip will be activated on a call for heat. This
call can be generated by the LC or the wall-mount unit
operating in orphan mode.

Bard Guard Anti-Theft System Option

The unit has the option to be shipped from the factory
with a low pressure switch, panel sensors and a speaker.
These devices are used with the Bard Guard BG1000 anti­theft controller to provide an anti-theft measure. These
sensors and switch form a loop that when connected to
the BG1000 controller will cause the system to go into
alarm if any of the front panels or coil assemblies are
removed without being disarmed. The speaker provides an
audible alert that the system is being tampered with. The
Bard Guard anti-theft control sensor connection is wired
to terminals 7 and 8 on the wall-mount unit. The speaker

Manual 2100-695
Page 36 of 54

FUSION-TEC WR Series Wall-Mount Unit Model Nomenclature

UNIT SERIES

MAXIMUM SENSIBLE CAPACITY

36 – 3 Ton 2 Stage Step Capacity
58 – 5 Ton 2 Stage Step Capacity

CONTROL LOGIC AND CLIMATE OPTIONS

0Z – O kW with Circuit Breaker

01 – 1.5 kW with Circuit Breaker

05 – 5 kW with Circuit Breaker

5 – Internal and External Cabinet Component Coating, Coated Evaporator Coil, Coated Condenser Coil

X – Standard accessories including airflow sensor, dirty filter sensor, pressure transducers, crankcase heater

FIGURE 59

WR 58 B P A 0Z E P X X X X

REVISION

B – Revision Level

P – Programmable Logic Board

VOLTS & PHASE

A – 230/208/60/1
B – 230/208/60/3

MZ – O kW with Circuit Breaker and Inverter

M1 – 1.5 kW with Circuit Breaker and Inverter

M5 – 5 kW with Circuit Breaker and Inverter

E – Factory-Installed Economizer (All Units)

X – Copper/Aluminum Evaporator Coil, Copper/Aluminum Condenser Coil

4 – Condenser Section Component Coating, Coated Evaporator Coil, Coated Condenser Coil

S – All standard accessories plus additional Bard Guard

ELECTRIC HEAT

VENT PACKAGE

FILTER

P – MERV8 Disposable Pleated Filter

COLOR AND CABINET FINISH

X – Beige Baked Enamel Finish

1 – White Baked Enamel Finish
4 – Buckeye Gray Baked Enamel Finish
5 – Desert Brown Baked Enamel Finish

8 – Dark Bronze Baked Enamel Finish

COIL AND UNIT COATING OPTIONS

3 – Coated Evaporator Coil, Coated Condenser Coil

ACCESSORIES AND CONTROLS OPTIONS

TM

PLACEHOLDER

X – Future Use

1 – Coated Evaporator Coil
2 – Coated Condenser Coil

security features and security frame

Manual 2100-695
Page 37 of 54

FUSION-TEC WR Series Wall-Mount Unit Control Board 8301-068-004*

Micro USB

Unit Disable Relay/Switch

Dirty Filter Switch

Compressor Alarm Relay

Power Loss Relay (if equipped)

Damper Blade Switch

Airflow Switch

Digital Ground

Liquid Line Temp Sensor
Outdoor Air Temp Sensor

Return Air Temp Sensor
Supply Air Temp Sensor

Outdoor Humidity Sensor

Dust Sensor Board

Suction Temp Sensor

24VDC to Outdoor Humidity Sensor

Liquid Pressure Transducer

Suction Pressure Transducer

Damper Actuator Signal

Condenser Fan Motor Signal

Analog Ground

Ground

Blower Motor Signal

DI1
DI2
DI3
DI4
DI5
DI6
DI7
GND

B1
B2
B3
B4
B5
B6
B7
GND

+Vdc

B8
B9

GND
Y1
Y2
Y3

FIGURE 60

24VAC Hot 24VAC Common

Control
Stand-by

BMS Card

EEV1

Rx+/Tx+

Rx-/Tx-

GND

FieldBus2

Jumper

NO8

NO9

+ Communication Wire

– Communication Wire

C1

NO1

NO2

NO3

C2

NO4

NO5

NO6

NO7

C7

NC7

C8

24VAC +
To CCM Y
Compressor Staging
Solenoid

24VAC +
Stage 1 Heat

24VAC +
Dirty Filter Light

Expansion Valve:

Purple, Yellow – 40 ohms

Red/White – 40 ohms
Red/Green – 40 ohms

White/Green – 80 ohms

Blue/Yellow – 83 ohms

* Asterisk represents letter at end of part number that designates software version (Example: 8301-068-004A).

Manual 2100-695
Page 38 of 54

TABLE 10

FUSION-TEC WR Series Wall-Mount Unit Control Board Terminals

Terminal Function Type Form

Rx+/Tx+ Communication

Rx-/Tx- Communication

DI1 Unit Disable Relay/Switch Digital N/C

DI2 Dirty Filter Switch Digital N/C

DI3 Compressor Alarm Relay Digital N/C

DI4 Power Loss Relay (if used) Digital N/C

DI5 Not Used

DI6 Damper Blade Switch Digital N/C

DI7 Airflow Digital N/C

GND Digital Ground

B1 Liquid Line Temperature Sensor Analog Input 10K Ohm Curve J

B2 Outdoor Air Temperature Sensor Analog Input 10K Ohm Type III (AN)

B3 Return Air Temperature Sensor Analog Input 10K Ohm Curve J

B4 Supply Air Temperature Sensor Analog Input 10K NTC Thermistor

B5 Outdoor Humidity Sensor Analog Input 4mA to 20mA

B6 Dust Sensor Board Analog Input 0-5VDC

B7 Suction Temperature Sensor Analog Input 10K Ohm Curve J

GND Analog Ground

+VDC 24VDC to Outdoor Humidity Sensor

B8 Liquid Pressure Transducer Analog Input .5VDC to 4.5VDC

B9 Suction Pressure Transducer Analog Input .5VDC to 4.5VDC

Y1 Blower Motor Signal Analog Output 0-10VDC

Y2 Damper Actuator Signal Analog Output 0-10VDC

Y3 Condenser Fan Motor Signal Analog Output 0-10VDC

GND Ground

C1 24VAC+ Power

NO1 to CCM "Y" Relay Output

NO2 Compressor Staging Solenoid Relay Output

NO3 Not Used

C2 24VAC+ Power

NO4 Stage 1 Heating Relay Output

NO5 Not Used
NO6 Not Used

NO7 Not Used

C7 Not Used

NC7 Not Used

C8 24VAC+ Power

NO8 Dirty Filter Light Relay Output

GO 24VAC Common

G 24VAC Hot

Manual 2100-695
Page 39 of 54

REFRIGERANT INFORMATION

These units require R-410A refrigerant and
polyol ester oil.

General

1. Use separate service equipment to avoid cross
contamination of oil and refrigerants.

2. Use recovery equipment rated for R-410A
refrigerant.

3. Use manifold gauges rated for R-410A (800
PSI/250 PSI low).

4. R-410A is a binary blend of HFC-32 and HFC-

125.

5. R-410A is nearly azeotropic—similar to R-22 and
R-12. Although nearly azeotropic, charge with
liquid refrigerant.

6. R-410A operates at 40-70% higher pressure than
R-22, and systems designed for R-22 cannot
withstand this higher pressure.

7. R-410A has an ozone depletion potential of zero,
but must be reclaimed due to its global warming
potential.

8. R-410A compressors use polyol ester oil.

9. Polyol ester oil is hygroscopic; it will rapidly absorb
moisture and strongly hold this moisture in the oil.

10. A liquid line dryer must be used—even a deep
vacuum will not separate moisture from the oil.

11. Limit atmospheric exposure to 15 minutes.

12. If compressor removal is necessary, always plug
compressor immediately after removal. Purge with
small amount of nitrogen when inserting plugs.

Topping Off System Charge

If a leak has occurred in the system, Bard
Manufacturing recommends reclaiming, evacuating
(see criteria above) and charging to the nameplate
charge. If done correctly, topping off the system charge
can be done without problems.

With R-410A, there are no significant changes in the
refrigerant composition during multiple leaks and
recharges. R-410A refrigerant is close to being an
azeotropic blend (it behaves like a pure compound or
single component refrigerant). The remaining refrigerant
charge in the system may be used after leaks have
occurred. “Top-off” the charge by utilizing the pressure
charts on the inner control panel cover as a guideline.

REMEMBER: When adding R-410A refrigerant, it must
come out of the charging cylinder/tank as a liquid to
avoid any fractionation and to insure optimal system
performance. Refer to instructions for the cylinder that
is being utilized for proper method of liquid extraction.

Safety Practices

1. Never mix R-410A with other refrigerants.

2. Use gloves and safety glasses. Polyol ester oils can
be irritating to the skin, and liquid refrigerant will
freeze the skin.

3. Never use air and R-410A to leak check; the
mixture may become flammable.

4. Do not inhale R-410A—the vapor attacks
the nervous system, creating dizziness, loss
of coordination and slurred speech. Cardiac
irregularities, unconsciousness and ultimately
death can result from breathing this concentration.

5. Do not burn R-410A. This decomposition produces
hazardous vapors. Evacuate the area if exposed.

6. Use only cylinders rated DOT4BA/4BW 400.

7. Never fill cylinders over 80% of total capacity.

8. Store cylinders in a cool area, out of direct
sunlight.

9. Never heat cylinders above 125°F.

10. Never trap liquid R-410A in manifold sets, gauge
lines or cylinders. R-410A expands significantly at
warmer temperatures. Once a cylinder or line is full
of liquid, any further rise in temperature will cause
it to burst.

Important Installer Note

For improved start-up performance, wash the indoor
coil with a dishwashing detergent.

R410-A Refrigerant Charge

This wall-mount unit was charged at the factory with
the quantity of refrigerant listed on the serial plate.
AHRI capacity and efficiency ratings were determined
by testing with this refrigerant charge quantity.

Table 10 shows nominal pressures for the units. Since
many installation specific situations can affect the
pressure readings, this information should only be used
by certified technicians as a guide for evaluating proper
system performance. They shall not be used to adjust
charge. If charge is in doubt, reclaim, evacuate and
recharge the wall-mount unit to the serial plate charge.

Manual 2100-695
Page 40 of 54

Pressure Service Ports

High and low pressure service ports are installed on all
wall-mount units so that the system operating pressures
can be observed. Pressures are shown in Table 11.

This unit employs high-flow Coremax valves instead of
the typical Schrader type valves.

TABLE 11

Cooling Pressures

Full Load Cooling Air Temperature Entering Outdoor Coil °F

WARNING! Do NOT use a Schrader valve core removal
tool with these valves. Use of such a tool could result
in eye injuries or refrigerant burns!

To change a Coremax valve without first removing the
refrigerant, a special tool is required which can be
obtained at www.fastestinc.com/en/SCCA07H. See the
replacement parts manual for replacement core part
numbers.

Model

WR36

WR58

Model

WR36

WR58

Return Air Temp

(DB/WB)

75/62

80/67

85/72

75/62

80/67

85/72

Part Load Cooling Air Temperature Entering Outdoor Coil °F

Return Air Temp

(DB/WB)

75/62

80/67

85/72

75/62

80/67

85/72

Pressure 75 80 85 90 95 100 105 110 115 120 125

Low Side

High Side

Low Side

High Side

Low Side

High Side

Low Side

High Side

Low Side

High Side

Low Side

High Side

Pressure 75 80 85 90 95 100 105 110 115 120 125

Low Side

High Side

Low Side

High Side

Low Side

High Side

Low Side

High Side

Low Side

High Side

Low Side

High Side

130
290

139
297

144
307

129
318

138
326

143
337

119
268

127
275

131
285

135
283

144
290

149
300

131
312

140
320

145
331

130
340

139
349

144
361

125
288

134
295

139
305

136
304

145
312

150
323

132
334

141
343

146
355

131
365

140
374

145
387

131
308

140
316

145
327

136
327

145
335

150
347

134
359

143
368

148
381

132
389

141
399

146
413

136
331

145
339

150
351

137
350

146
359

151
372

135
384

144
394

149
408

133
414

142
425

147
440

140
354

150
363

155
376

137
375

147
385

152
398

136
411

145
422

150
437

134
440

143
451

148
467

143
378

153
388

158
402

138
402

148
412

153
426

137
439

147
450

152
466

136
467

145
479

150
496

146
405

156
415

161
430

138
428

148
439

154
454

138
468

148
480

153
497

137
495

146
508

151
526

148
432

158
443

164
459

140
456

150
468

155
484

139
498

149
511

154
529

137
527

147
537

152
556

149
460

159
472

165
489

141
486

151
498

156
515

140
530

150
544

155
563

139
553

149
567

154
587

150
490

160
503

166
521

142
416

152
529

157
548

142
564

152
578

157
598

140
584

150
599

155
620

149
522

159
535

165
554

143
547

153
561

158
581

Low side pressure ± 4 PSIG
High side pressure ± 10 PSIG

Tables are based upon rated CFM (airflow) across the evaporator coil. If there is any doubt as to correct operating charge
being in the system, the charge should be removed and system evacuated and recharged to serial plate charge weight.

NOTE: Pressure table based on high speed condenser fan operation. If condensing pressures appear elevated check

condenser fan wiring. See “Condenser Fan Operation” on page 24.

Manual 2100-695
Page 41 of 54

MAINTENANCE

Standard Maintenance Procedures

!

WARNING

Electrical shock hazard.
Disconnect all power supplies before

servicing.

Failure to do so could result in electric shock
or death.

!

CAUTION

Cut hazard.

Wear gloves to avoid contact with sharp
edges.

Failure to do so could result in personal

injury.

1. Disable system from LC6000 controller (see latest
revision of LC6000 Service Instructions 2100-

669).

2. Turn off AC breakers at wall-mount units.

3. Check inlet sides of condenser and evaporator coils
for obstructions/debris—clean if necessary using a
quality manufactured coil cleaning product specific
for the evaporator or condenser coil.

•

Condenser coil: Remove the upper side panels
from the condenser section. This will give
clear access to the inlet side of the coil for
cleaning. Follow the coil cleaner manufacturer’s
directions for necessary safety gear and
precautions, as well as for application and use.
More than one application may be necessary.
Rinse thoroughly.

• Evaporator coil: Open filter access panels

and remove filters. Apply specific evaporator
cleaner directly to the inlet side of coil, being
very careful not to overspray into insulation
or surrounding panels and wiring. Residual
cleaner and dissolved debris should drip into
the drain pan and leave the unit through the
condensate hose. More than one application
may be necessary. Rinse thoroughly.

4. Manually spin fan and blower motors to ensure
they turn freely. All motors are permanently
lubricated, so no oil is necessary.

5. Inspect free cooling damper actuator and linkage.

6. Install new air filter; check for additional filter
grilles internal to the structure.

7. Inspect the control panel of the system.

• Look for insect or rodent activity and remove

any nesting materials.

• Manually push contactor closed, observe for

movement—contactor points should have
minimal discoloration, no spalling or other
signs of arcing. Replace if doubtful.

• Check field and factory wiring for tightness and

look for signs of overheating (discoloration of
terminals or wire insulation).

8. Ensure that supply and return registers are not
obstructed, and more importantly, are not recycling
the air to one another. Adjust supply louvers if
necessary to direct discharge air away from any
direct route to the return grille.

Re-assemble wall-mount unit, turn breakers back on.

9.

10. Enable system to LC6000 controller (see latest
revision of LC6000 Service Instructions 2100-

669).

11. Repeat steps for additional wall-mount units.

Bard Guard Anti-Theft System Option

While the system is powered, push DISARM/RESET
button to disarm the system. Once the button is
pushed, the blue LED will illuminate. As long as
the blue LED is illuminated, the Bard Guard system
is disarmed and will remain disarmed depending
on the preset time for up to 250 minutes (default
approximately 15 minutes). After the preset time
expires, the system will rearm automatically.

For situations that require an individual unit to be
disconnected from the Bard Guard security system for
an extended period of service time (longer than the
maximum 250 minutes disarm time), place a jumper
across the appropriate terminals on the BG1000
terminal block to temporarily remove the unit from the
security system. Be sure to remove the jumper from the

terminals after service has been completed.

See the latest revision of BG1000 Installation
Instructions 2100-672 for information on operating the
BG1000 controller.

Manual 2100-695
Page 42 of 54

8301-067 Outdoor Temperature/Humidity Sensor

8301-067 Sensor Connections

This unit utilizes a two wire 4-10mA signal from
the 8301-067 sensor to communicate outdoor
humidity and a 10KΩ Type III (AN) thermocouple
from the 8301-067 sensor to communicate outdoor
temperature. The humidity sensor is connected to
the sensor control board via the J13 connector. The
thermocouple wires are loose in the sensor housing and
require a butt splice connector or wire nut to connect to
the main unit wiring harness. See Figure 61 and Figure
62 for sensor wiring and terminal location.

FIGURE 61

8301-067 Sensor Electrical Connections

Tables 12 and 13 on pages 44 and 45 are correlation
charts for troubleshooting the sensor with a test meter:

Table 12: Temperature to Thermocouple Resistance
Table 13: Relative Humidity to Humidity Sensor Current

TROUBLESHOOTING

Output

FIGURE 62

8301-067 Sensor Terminal Connections

Manual 2100-695
Page 43 of 54

TABLE 12

8301-067 Sensor: Temperature to Thermocouple Resistance

Temperature Resistance

F C Ω

-25 -31.7 148,453

-24 -31.1 143,910

-23 -30.6 139,521

-22 -30.0 135,281

-21 -29.4 131,182

-20 -28.9 127,221

-19 -28.3 123,393

-18 -27.8 119,692

-17 -27.2 116,113

-16 -26.7 112,654

-15 -26.1 109,308

-14 -25.6 106,073

-13 -25.0 102,943

-12 -24.4 99,917

-11 -23.9 96,988

-10 -23.3 94,155

-9 -22.8 91,414

-8 -22.2 88,761

-7 -21.7 86,194

-6 -21.1 83,709

-5 -20.6 81,304

-4 -20.0 78,976

-3 -19.4 76,721

-2 -18.9 74,538

-1 -18.3 72,425

0 -17.8 70,377

1 -17.2 68,395

2 -16.7 66,474

3 -16.1 64,613

4 -15.6 62,811

5 -15.0 61,064

6 -14.4 59,372

7 -13.9 57,731

8 -13.3 56,142

9 -12.8 54,601

10 -12.2 53,107

11 -11.7 51,658

12 -11.1 50,254

Temperature Resistance

F C Ω

13 -10.6 48,892

14 -10.0 47,572

15 -9.4 46,291

16 -8.9 45,049

17 -8.3 43,844

18 -7.8 42,675

19 -7.2 41,541

20 -6.7 40,441

21 -6.1 39,373

22 -5.6 38,336

23 -5.0 37,330

24 -4.4 36,354

25 -3.9 35,406

26 -3.3 34,486

27 -2.8 33,593

28 -2.2 32,725

29 -1.7 31,883

30 -1.1 31,065

31 -0.6 30,270

32 0.0 29,499

33 0.6 28,749

34 1.1 28,020

35 1.7 27,313

36 2.2 26,625

37 2.8 25,957

38 3.3 25,308

39 3.9 24,676

40 4.4 24,063

41 5.0 23,467

42 5.6 22,887

43 6.1 22,323

44 6.7 21,775

45 7.2 21,242

46 7.8 20,724

47 8.3 20,220

48 8.9 19,730

49 9.4 19,253

50 10.0 18,789

Temperature Resistance

F C Ω

51 10.6 18,338

52 11.1 17,898

53 11.7 17,471

54 12.2 17,055

55 12.8 16,651

56 13.3 16,257

57 13.9 15,873

58 14.4 15,500

59 15.0 15,137

60 15.6 14,783

61 16.1 14,439

62 16.7 14,104

63 17.2 13,777

64 17.8 13,459

65 18.3 13,150

66 18.9 12,848

67 19.4 12,554

68 20.0 12,268

69 20.6 11,989

70 21.1 11,718

71 21.7 11,453

72 22.2 11,195

73 22.8 10,943

74 23.3 10,698

75 23.9 10,460

76 24.4 10,227

77 25.0 10,000

78 25.6 9779

79 26.1 9563

80 26.7 9353

81 27.2 9148

82 27.8 8948

83 28.3 8753

84 28.9 8563

85 29.4 8377

86 30.0 8196

87 30.6 8020

88 31.1 7848

Temperature Resistance

F C Ω

89 31.7 7680

90 32.2 7516

91 32.8 7356

92 33.3 7200

93 33.9 7048

94 34.4 6899

95 35.0 6754

96 35.6 6612

97 36.1 6474

98 36.7 6339

99 37.2 6207

100 37.8 6079

101 38.3 5953

102 38.9 5831

103 39.4 5711

104 40.0 5594

105 40.6 5480

106 41.1 5368

107 41.7 5259

108 42.2 5153

109 42.8 5049

110 43.3 4947

111 43.9 4848

112 44.4 4751

113 45.0 4656

114 45.6 4563

115 46.1 4473

116 46.7 4384

117 47.2 4298

118 47.8 4213

119 48.3 4131

120 48.9 4050

121 49.4 3971

122 50.0 3894

123 50.6 3818

124 51.1 3744

125 51.7 3672

Manual 2100-695
Page 44 of 54

TABLE 13

8301-067 Sensor: Relative Humidity to Humidity Sensor Current Output

Humidity Signal

% RH mA

0 4.000

1 4.160

2 4.320

3 4.480

4 4.640

5 4.800

6 4.960

7 5.120

8 5.280

9 5.440

10 5.600

11 5.760

12 5.920

13 6.080

14 6.240

15 6.400

16 6.560

17 6.720

18 6.880

19 7.040

20 7.200

21 7.360

22 7.520

23 7.680

24 7.840

25 8.000

26 8.160

27 8.320

28 8.480

29 8.640

30 8.800

31 8.960

32 9.120

33 9.280

Humidity Signal

% RH mA

34 9.440

35 9.600

36 9.760

37 9.920

38 10.080

39 10.240

40 10.400

41 10.560

42 10.720

43 10.880

44 11.040

45 11.200

46 11.360

47 11.520

48 11.680

49 11.840

50 12.000

51 12.160

52 12.320

53 12.480

54 12.640

55 12.800

56 12.960

57 13.120

58 13.280

59 13.440

60 13.600

61 13.760

62 13.920

63 14.080

64 14.240

65 14.400

66 14.560

67 14.720

Humidity Signal

% RH mA

68 14.880

69 15.040

70 15.200

71 15.360

72 15.520

73 15.680

74 15.840

75 16.000

76 16.160

77 16.320

78 16.480

79 16.640

80 16.800

81 16.960

82 17.120

83 17.280

84 17.440

85 17.600

86 17.760

87 17.920

88 18.080

89 18.240

90 18.400

91 18.560

92 18.720

93 18.880

94 19.040

95 19.200

96 19.360

97 19.520

98 19.680

99 19.840

100 20.000

Manual 2100-695
Page 45 of 54

8301-067 Humidity Sensor Test Value Outputs

This sensor has the ability to output fixed test signals
when testing/troubleshooting sensor operation.
These settings are to be used for sensor testing/
troubleshooting only and need to be removed before
unit can resume normal operation. These settings allow
the sensor board to output 0% RH, 50% RH and 100%
RH. When these settings are active, the actual humidity
sensor is ignored. DIP switches 1, 2 and 3 are used to
override the output to a test signal. See Figure 63 for
DIP switch/output configuration.

NOTE:

If any DIP switches are disrupted, they will need
to be returned to the off state in order for the
humidity sensor to return to normal operation.

FIGURE 63

8301-067 DIP Switch/Output Configuration

8301-067 Humidity Sensor Calibration

The 8301-067 sensor has the ability to be calibrated
via the sensor control board through the use of the
DIP switches and/or the use of ZERO P1 or SPAN P2.
It is not advised to calibrate this sensor through these
means. Any calibration for the unit operation can be
done by applying an offset to the sensor input channel
using the TEC-EYE service tool.

Manual 2100-695
Page 46 of 54

8301-057 Blower Status Switch/Dirty Filter Switch

FIGURE 64

8301-057 Air Differential Switch Terminals

Terminals

1 − Normally Closed
2 − Normally Open
3 − Common

NOTE: Contact position is in resting state.

P2

P1

P1: Hose Connected
P2: Stub Connected

Manual 2100-695
Page 47 of 54

8612-061 Dust (Particulate) Sensor Control Board

8612-061 Control Board Output Signal Not Responsive
to Dust

1. With a voltmeter, verify 24Vac present across
24VAC pin terminals.

A. If 24Vac is not present, trace back wires to

source.

2. Inspect and re-seat the dust sensor communication
cable.

A. Carefully remove the dust sensor

communication cable from the dust sensor
connector on the dust sensor alarm board and
the dust sensor.

B. Inspect communication cable for the following:

i. Wires pulled out of the connectors.

ii. Scars in insulation exposing bare wire.

C. If communication cable is damaged:

i. Replace communication cable.

D. If communication cable is not damaged:

i. Carefully reconnect the dust sensor

communication cable to the dust sensor
connector on the dust sensor alarm board
and the dust sensor.

3. With a voltmeter, measure voltage between the
following terminals:

A. Component U1 pin 2 and terminal block pin 4

(see Figure 66).

i. Should read 12V

B. Component U1 pin 3 and terminal block pin 4

(see Figure 66).

i. Should read 12V

C. If voltage readings are correct:

i. Replace 8301-073 dust sensor.

D. If voltage readings are not correct:

i. Replace 8612-061 dust sensor alarm

board.

FIGURE 65

8612-061 Dust Sensor Alarm Board

Manual 2100-695
Page 48 of 54

FIGURE 66

Dust Sensor Alarm Board Power Supply Check

Manual 2100-695
Page 49 of 54

8301-073 Dust (Particulate) Sensor

8301-073 Sensor: Dust/Volts

TABLE 14

Dust Signal

ppm Vdc

0 0.00

3 0.05

6 0.10

9 0.15

12 0.19

15 0.24

18 0.29

21 0.34

24 0.39

27 0.44

30 0.49

33 0.53

36 0.58

39 0.63

42 0.68

45 0.73

48 0.78

51 0.83

54 0.87

57 0.92

60 0.97

63 1.02

66 1.07

69 1.12

72 1.17

75 1.21

78 1.26

81 1.31

84 1.36

87 1.41

90 1.46

93 1.50

96 1.55

99 1.60

102 1.65

Dust Signal

ppm Vdc

105 1.70

108 1.75

111 1.80

114 1.84

117 1.89

120 1.94

126 1.99

126 2.04

129 2.09

132 2.14

135 2.18

138 2.23

141 2.28

144 2.33

147 2.38

150 2.43

153 2.48

156 2.52

159 2.57

162 2.62

165 2.67

168 2.72

171 2.77

174 2.82

177 2.86

180 2.91

183 2.96

186 3.01

189 3.06

192 3.11

195 3.16

198 3.20

201 3.25

204 3.30

207 3.35

Dust Signal

ppm Vdc

210 3.40

213 3.45

216 3.50

219 3.54

222 3.59

225 3.64

228 3.69

231 3.74

234 3.79

237 3.83

240 3.88

243 3.93

246 3.98

249 4.03

252 4.08

255 4.13

258 4.17

261 4.22

264 4.27

267 4.32

270 4.37

273 4.42

276 4.47

279 4.51

282 4.56

285 4.61

288 4.66

291 4.71

294 4.76

297 4.81

300 4.85

303 4.90

306 4.95

309 5.00

Manual 2100-695
Page 50 of 54

8408-044 Return Air Sensor/Suction Sensor

TABLE 15

8408-044 Sensor: Temperature/Resistance Curve J

Temperature Resistance Temperature Resistance Temperature Resistance Temperature Resistance

ºF ºC Ω ºF ºC Ω ºF ºC Ω ºF ºC Ω

-25 -31.7 196,871 13 -10.6 56,985 53 10.6 19,374 89 31.7 7507

-24 -31.1 190,099 14 -10.0 55,284 52 11.1 18,867 90 32.2 7334

-23 -30.6 183,585 15 -9.4 53,640 53 11.7 18,375 91 32.8 7165

-22 -30.0 177,318 16 -8.9 52,051 54 12.2 17,989 92 33.3 7000

-21 -29.4 171,289 17 -8.3 50,514 55 12.8 17,434 93 33.9 6840

-20 -28.9 165,487 18 -7.8 49,028 56 13.3 16,984 94 34.4 6683

-19 -28.3 159,904 19 -7.2 47,590 57 13.9 16,547 95 35.0 6531

-18 -27.8 154,529 20 -6.7 46,200 58 14.4 16,122 96 35.6 6383

-17 -27.2 149,355 21 -6.1 44,855 59 15.0 15,710 97 36.1 6239

-16 -26.7 144,374 22 -5.6 43,554 60 15.6 15,310 98 36.7 6098

-15 -26.1 139,576 23 -5.0 42,295 61 16.1 14,921 99 37.2 5961

-14 -25.6 134,956 24 -4.4 41,077 62 16.7 14,544 100 37.8 5827

-13 -25.0 130,506 25 -3.9 39,898 63 17.2 14,177 101 38.3 5697

-12 -24.4 126,219 26 -3.3 38,757 64 17.8 13,820 102 38.9 5570

-11 -23.9 122,089 27 -2.8 37,652 65 18.3 13,474 103 39.4 5446

-10 -23.3 118,108 28 -2.2 36,583 66 18.9 13,137 104 40.0 5326

-9 -22.8 114,272 29 -1.7 35,548 67 19.4 12,810 105 40.6 5208

-8 -22.2 110,575 30 -1.1 34,545 68 20.0 12,492 106 41.1 5094

-7 -21.7 107,010 31 -0.6 33,574 69 20.6 12,183 107 41.7 4982

-6 -21.1 103,574 32 0.0 32,634 70 21.1 11,883 108 42.2 4873

-5 -20.6 100,260 33 0.6 31,723 71 21.7 11,591 109 42.8 4767

-4 -20.0 97,064 34 1.1 30,840 72 22.2 11,307 110 43.3 4663

-3 -19.4 93,981 35 1.7 29,986 73 22.8 11,031 111 43.9 4562

-2 -18.9 91,008 36 2.2 29,157 74 23.3 10,762 112 44.4 4464

-1 -18.3 88,139 37 2.8 28,355 75 23.9 10,501 113 45.0 4367

0 -17.8 85,371 38 3.3 27,577 76 24.4 10,247 114 45.6 4274

1 -17.2 82,699 39 3.9 26,823 77 25.0 10,000 115 46.1 4182

2 -16.7 80,121 40 4.4 26,092 78 25.6 9760 116 46.7 4093

3 -16.1 77,632 41 5.0 25,383 79 26.1 9526 117 47.2 4006

4 -15.6 75,230 42 5.6 24,696 80 26.7 9299 118 47.8 3921

5 -15.0 72,910 43 6.1 24,030 81 27.2 9077 119 48.3 3838

6 -14.4 70,670 44 6.7 23,384 82 27.8

7 -13.9 68,507 45 7.2 22,758 83 28.3 8653 121 49.4 3678

8 -13.3 66,418 46 7.8 22,150 84 28.9 8449 122 50.0 3601

9 -12.8 64,399 47 8.3 21,561 85 29.4 8250 123 50.6 3526

10 -12.2 62,449 48 8.9 20,989 86 30.0 8057 124 51.1 3452

11 -11.7 60,565 49 9.4 20,435 87 30.6 7869

12 -11.1 58,745 50 10.0 19,896 88 31.1 7686

8862 120 48.9 3757

Manual 2100-695
Page 51 of 54

8301-066 Supply Air Sensor

TABLE 16

8301-066 Sensor: Temperature/Resistance

Temperature Resistance

°F °C Ω

32 0 29,490

33.8 1 28,157

35.6 2 26,891

37.4 3 25,689

39.2 4 24,547

41 5 23,462

42.8 6 22,431

44.6 7 21,450

46.4 8 20,518

48.2 9 19,631

50 10 18,787

51.8 11 17,983

53.6 12 17,219

55.4 13 16,490

57.2 14 15,797

59 15 15,136

60.8 16 14,506

62.6 17 13,906

64.4 18 13,334

66.2 19 12,788

68 20 12,268

69.8 21 11,771

71.6 22 11,297

73.4 23 10,845

75.2 24 10,413

77 25 10,000

78.8 26 9606

80.6 27 9229

82.4 28 8869

84.2 29 8525

86 30 8196

87.8 31 7882

89.6 32 7581

91.4 33 7293

93.2 34 7018

95 35 6754

Temperature Resistance

°F °C Ω

96.8 36 6501

98.6 37 6260

100.4 38 6028

102.2 39 5806

104 40 5594

105.8 41 5390

107.6 42 5195

109.4 43 5007

111.2 44 4828

113 45 4656

114.8 46 4490

116.6 47 4332

118.4 48 4180

120.2 49 4034

122 50 3893

123.8 51 3759

125.6 52 3629

127.4 53 3505

192.2 54 3386

131 55 3271

132.8 56 3160

134.6 57 3054

136.4 58 2952

138.2 59 2854

140 60 2760

141.8 61 2669

143.6 62 2582

145.4 63 2498

147.2 64 2417

149 65 2339

150.8 66 2264

152.6 67 2191

154.4 68 2122

156.2 69 2055

158 70 1990

159.8 71 1928

Temperature Resistance

°F °C Ω

161.6 72 1868

163.4 73 1810

165.2 74 1754

167 75 1700

168.8 76 1648

170.6 77 1598

172.4 78 1550

174.2 79 1503

176 80 1458

177.8 81 1414

179.6 82 1372

181.4 83 1332

183.2 84 1293

185 85 1255

186.8 86 1218

188.6 87 1183

190.4 88 1149

192.2 89 1116

194 90 1084

195.8 91 1053

197.6 92 1023

199.4 93 994

201.2 94 967

203 95 940

204.8 96 913

206.6 97 888

208.4 98 864

210.2 99 840

212 100 817

213.8 101 795

215.6 102 774

217.4 103 753

219.2 104 733

221 105 713

222.8 106 694

224.6 107 676

Manual 2100-695
Page 52 of 54

8406-157 Liquid Line Pressure Transducer

TABLE 17

8406-157 0-650psi Pressure Transducer: Pressure/DC Voltage

Pressure Signal

PSI Bar Vdc

0 0.0 0.500

5 0.3 0.531

10 0.7 0.562

15 1.0 0.592

20 1.4 0.623

25 1.7 0.654

30 2.0 0.685

35 2.4 0.715

40 2.7 0.746

45 3.1 0.777

50 3.4 0.808

55 3.7 0.838

60 4.1 0.869

65 4.4 0.900

70 4.8 0.931

75 5.1 0.962

80 5.4 0.992

85 5.8 1.023

90 6.1 1.054

95 6.5 1.085

100 6.8 1.115

105 7.1 1.146

110 7.5 1.177

115 7.8 1.208

120 8.2 1.238

125 8.5 1.269

130 8.8 1.300

135 9.2 1.331

140 9.5 1.362

145 9.9 1.392

150 10.2 1.423

155 10.5 1.454

160 10.9 1.485

Pressure Signal

PSI Bar Vdc

165 11.2 1.515

170 11.6 1.546

175 11.9 1.577

180 12.2 1.608

185 12.6 1.638

190 12.9 1.669

195 13.3 1.700

200 13.6 1.731

205 13.9 1.762

210 14.3 1.792

215 14.6 1.823

220 15.0 1.854

225 15.3 1.885

230 15.7 1.915

235 16.0 1.946

240 16.3 1.977

245 16.7 2.008

250 17.0 2.039

255 17.4 2.069

260 17.7 2.100

265 18.0 2.131

270 18.4 2.162

275 18.7 2.192

280 19.1 2.223

285 19.4 2.254

290 19.7 2.285

295 20.1 2.315

300 20.4 2.346

305 20.8 2.377

310 21.1 2.408

315 21.4 2.439

320 21.8 2.469

325 22.1 2.500

Pressure Signal

PSI Bar Vdc

330 22.5 2.531

335 22.8 2.562

340 23.1 2.592

345 23.5 2.623

350 23.8 2.654

355 24.2 2.685

360 24.5 2.715

365 24.8 2.746

370 25.2 2.777

375 25.5 2.808

380 25.9 2.839

385 26.2 2.869

390 26.5 2.900

395 26.9 2.931

400 27.2 2.962

405 27.6 2.992

410 27.9 3.023
415 28.2 3.054
420 28.6 3.085

425 28.9 3.115

430 29.3 3.146

435 29.6 3.177

440 29.9 3.208

445 30.3 3.239

450 30.6 3.269

455 31.0 3.300

460 31.3 3.331

465 31.6 3.362

470 32.0 3.392

475 32.3 3.423

480 32.7 3.454

485 33.0 3.485

490 33.3 3.515

Pressure Signal

PSI Bar Vdc

495 33.7 3.546

500 34.0 3.577

505 34.4 3.608

510 34.7 3.639

515 35.0 3.669

520 35.4 3.700

525 35.7 3.731

530 36.1 3.762

535 36.4 3.792

540 36.7 3.823

545 37.1 3.854

550 37.4 3.885

555 37.8 3.915

560 38.1 3.946

565 38.4 3.977

570 38.8 4.008

575 39.1 4.039

580 39.5 4.069

585 39.8 4.100

590 40.1 4.131

595 40.5 4.162

600 40.8 4.192

605 41.2 4.223

610 41.5 4.254

615 41.8 4.285

620 42.2 4.315

625 42.5 4.346

630 42.9 4.377

635 43.2 4.408

640 43.5 4.439

645 43.9 4.469

650 44.2 4.500

Manual 2100-695
Page 53 of 54

8406-158 Suction Pressure Transducer

8406-158 0-250psi Pressure Transducer: Pressure/DC Voltage

TABLE 18

Pressure Signal

PSI Bar Vdc

0 0.0 0.500

2 0.1 0.532

4 0.3 0.564

6 0.4 0.596

8 0.5 0.628

10 0.7 0.660

12 0.8 0.692

14 1.0 0.724

16 1.1 0.756

18 1.2 0.788

20 1.4 0.820

22 1.5 0.852

24 1.6 0.884

26 1.8 0.916

28 1.9 0.948

30 2.0 0.980

32 2.2 1.012

34 2.3 1.044

36 2.4 1.076

38 2.6 1.108

40 2.7 1.140

42 2.9 1.172

44 3.0 1.204

46 3.1 1.236

48 3.3 1.268

50 3.4 1.300

52 3.5 1.332

54 3.7 1.364

56 3.8 1.396

58 3.9 1.428

60 4.1 1.460

62 4.2 1.492

Pressure Signal

PSI Bar Vdc

64 4.4 1.524

66 4.5 1.556

68 4.6 1.588

70 4.8 1.620

72 4.9 1.652

74 5.0 1.684

76 5.2 1.716

78 5.3 1.748

80 5.4 1.780

82 5.6 1.812

84 5.7 1.844

86 5.9 1.876

88 6.0 1.908

90 6.1 1.940

92 6.3 1.972

94 6.4 2.004

96 6.5 2.036

98 6.7 2.068

100 6.8 2.100

102 6.9 2.132

104 7.1 2.164

106 7.2 2.196

108 7.3 2.228

110 7.5 2.260

112 7.6 2.292

114 7.8 2.324

116 7.9 2.356

118 8.0 2.388

120 8.2 2.420

122 8.3 2.452

124 8.4 2.484

126 8.6 2.516

Pressure Signal

PSI Bar Vdc

128 8.7 2.548

130 8.8 2.580

132 9.0 2.612

134 9.1 2.644

136 9.3 2.676

138 9.4 2.708

140 9.5 2.740

142 9.7 2.772

144 9.8 2.804

146 9.9 2.836

148 10.1 2.868

150 10.2 2.900

152 10.3 2.932

154 10.5 2.964

156 10.6 2.996

158 10.8 3.028

160 10.9 3.060
162 11.0 3.092
164 11.2 3.124

166 11.3 3.156

168 11.4 3.188

170 11.6 3.220

172 11.7 3.252

174 11.8 3.284

176 12.0 3.316

178 12.1 3.348

180 12.2 3.380

182 12.4 3.412

184 12.5 3.444

186 12.7 3.476

188 12.8 3.508

190 12.9 3.540

Pressure Signal

PSI Bar Vdc

192 13.1 3.572

194 13.2 3.604

196 13.3 3.636

198 13.5 3.668

200 13.6 3.700

202 13.7 3.732

204 13.9 3.764

206 14.0 3.796

208 14.2 3.828

210 14.3 3.860

212 14.4 3.892

214 14.6 3.924

216 14.7 3.956

218 14.8 3.988

220 15.0 4.020

222 15.1 4.052

224 15.2 4.084

226 15.4 4.116

228 15.5 4.148

230 15.7 4.180

232 15.8 4.212

234 15.9 4.244

236 16.1 4.276

238 16.2 4.308

240 16.3 4.340

242 16.5 4.372

244 16.6 4.404

246 16.7 4.436

248 16.9 4.468

250 17.0 4.500

Manual 2100-695
Page 54 of 54