Chromalox ChromaFP Series User manual

1
PK568
April 2023
Installation & Operation Manual
ChromaFP Series

2 3
Section Page
Introduction............................................................................................................................................ 6
Chroma-FP Installation notes .............................................................................................................. 7
Wiring the Chroma-FP1, Chroma-FP1-MDB (120V).......................................................................... 8
Wiring the Chroma-FP2, Chroma-FP2-MDB (240V).......................................................................... 9
Operating instructions ........................................................................................................................ 10
Turning the system ON and OFF ..................................................................................................... 11
Selecting temperature scale............................................................................................................ 11
Selecting Automatic or Manual mode ............................................................................................. 11
Heater indication ............................................................................................................................. 12
Snow ake icon and digital time indication..................................................................................... 12
Technician settings.............................................................................................................................. 13
Enter technician settings mode....................................................................................................... 13
P01 - Temperature set point............................................................................................................ 14
P02 - Lower limit temperature for heating....................................................................................... 14
P03 -Time delay before stopping the heater................................................................................... 15
P04 - Manual mode ON time........................................................................................................... 15
P05 - Not in use............................................................................................................................... 15
P06 - Enable/Disable 2nd temperature sensor (Aquastat) .............................................................. 16
P07 - Not in use............................................................................................................................... 16
P08 - MODBUS MAC Address for building automation (option)..................................................... 16
P09 - Test conditions mode ............................................................................................................ 17
P11 - Master/Slave.......................................................................................................................... 17
P15 - Temperature sensor calibration offset................................................................................... 18
Save changes and return to normal display.................................................................................... 18
Restore default values ........................................................................................................................ 18
DIP Switch settings ............................................................................................................................. 19
DIP switch S2 - Short measuring times (test only) ......................................................................... 19
DIP switches S3 and S4 – not in use .............................................................................................. 19
Temperature reading errors................................................................................................................ 20
MODBUS communication error....................................................................................................... 20
Temperature sensor not connected or short circuit ....................................................................... 20
Calibrating and testing the internal GFEP......................................................................................... 21
MODBUS object list ............................................................................................................................ 22
Table of Contents

4 5
Before Powering Up
Chromalox takes great pride in knowing that we have provided to you a product of premium quality and
workman-ship. We have taken every precaution to ensure that your equipment arrives safe and secure.
However, vibration and temperature changes during shipping can cause some components to become
loose. Additionally, throughout the life span of this product, other environmental and application
conditions may have affected the mechanical and electrical continuity of several internal components.
Therefore, for your safety and overall product performance, please take the time to familiarize yourself
with the MAINTENANCE, OPERATION, AND INSTALLATION INSTRUCTIONS technical manual that
was shipped with your panel.
Since it is not uncommon for electrical wiring and mechanical connections to become slightly loosened
during shipment, we ask that you pay particular attention to the section titled Wiring and Connections:
WIRING AND CONNECTIONS
Check wiring and connections as follows:
a. Inspect wiring for wear, fraying, chipping, nicks, and evidence of overheating.
Repair minor defects with a good grade of electrical tape, or replace if needed.
b. Inspect for loose electrical and mechanical connections. Tighten or replace defective crimp-style
lugs. Re-solder loose solder connections. Tighten or replace all loose or missing hardware.
Safety Precautions
IMPORTANT SAFEGUARDS
Safety precautions should always be followed to
reduce the risk of re, electrical shock, injury and
even death to persons.
Please read all instructions before operating the
Control Panel.
To avoid electrical shock or injury, always remove
power before servicing a circuit. Personnel
working with or near high voltages should be
familiar with modern methods of resuscitation.
Contact an area supervisor or safety personnel
for more information.
HIGH VOLTAGE is used in the operation of
this equipment; DEATH ON CONTACT may
result if personnel fail to observe safety
precautions.
Learn the areas containing high-voltage
connections when installing or operating
this equipment.
Be careful not to contact high-voltage
connections when installing or operating
this equipment.
Before working inside the equipment,
turn power off and ground all points of
high potential before touching them.
ELECTRIC SHOCK HAZARD.Any installation
involving control equipment must be
performed by a qualified person and must
be effectively grounded in accordance with
the National Electrical Code to eliminate
shock hazard.

6 7
ON
Temperature sensor
Chroma-FP
Operating panel
Chroma-FP General system layout
Zone 1
Aquastat sensor (option)
Pipe
Sensor
Heater
Chroma-FP Series Installation
PLEASE READ THIS MANUAL AND THE SAFETY WARNINGS CAREFULLY BEFORE
INSTALLING AND USING THE CONTROLLER AND SAVE IT FOR FUTURE USE.
Introduction
The Chroma-FP Series power boxes offer smart
and easy control for HEAT TRACING SYSTEMS.
It can operate one heating zones.
Typical applications include pipes,
valves and gutters.
The backlit LCD screen provides full interface
and information to the system status.
The Chroma-FP offers various operating and
programming options such as:
• Switchable temperature scales (°F or °C)
• Adjustable Lower ambient temperature limit to stop
• Both Automatic and Manual modes heater (lockout)
• Energy saving temperature limit
• Commissioning/Test environment
• Adjustable heater hold on off delay
Installation Notes
1. Familiarize yourself with the markings,
warnings, components and terminology.
2. The Chroma-FP power boxes and its
accessories must be installed by a qualied
electrician in accordance with local
regulations and the requirements of the NEC
(NFPA 72 ) and the CEC part 1.
Ground Fault Equipment Protector (GFEP)
1. The ground fault interrupter/residual
current detector installed in this system
is a Non class A GFCI, intended for
equipment protection.
2. Familiar yourself with its operation and
required setting.
3. The GFEP should be tested monthly.
Please refer to the GFEP testing instructions.
7. Ensure that the main breakers (fuses)
are suitable for the heating systems rating
(80% load).
8. Grounding means must comply with local
regulations and CEC/NEC.
9. Ensure that the heating system/de-icing
system connected to this unit complies with
the UL 499 or UL 515 & CSA 22.2 # 130.3
standard and is certied / listed by an NRTL.
10. Ensure that all wiring is rated for the
application at 60°C (140°F as per UL 515
CSA 22.2 #130 clause 12 table 12.1.)
11. Beware that any holes punched for conduit
are to compromise the integrity of the
enclosure ratings.
Ensure the power is disconnect from all
circuits before mounting the power box
and making any connections. Contact with
components carrying hazardous voltage
can cause electric shock and may result
in severe personal injury or death.
3. Installer must ensure the installation of
approved disconnect means, for all power
supply circuits feeding this unit.
4. The power boxes are suitable for indoor wall
mount installation only.
5. Ensure wiring according to the provided
schematics using copper conductors only.
6. Make sure the wire gauge (AWG) is suitable
for the circuit amperage draw, as specied
in the NEC/CEC table 1.

8 9
Wiring the Chroma-RG
Heater Load Connection
Provide terminals L, N with up to
120 VAC, 30 AMP.
Make sure the wire Gauge (AWG) is suitable
for the circuit Amperage draw, as specied
in the NEC/ CEC table 1.
Heater
Load
connection
120 VAC, 30A
CS-HL
(By Chromalox)
LLNN NO NC HE C C1 2
Aquastat
(option)
Heat
Indication
(24VAC)
Chroma-FP1 (120V)
Branch circuit protection
and disconnect provided
by installer. Max. 30A
Main
Supply
120 VAC
GFEP
Indication
Dry Contact
(NO/NC)
*See table
*GFEP Indication -Dry Contact
Branch circuit protection
and disconnect provided
by installer. Max. 30A
Heater
Load
connection
120 VAC, 30A
CS-HL
(By Chromalox)
LLNN NO NC HE C C1 2
Aquastat
(option)
Heat
Indication
(24VAC)
*GFEP Indication -Dry Contact
Main
Supply
120 VAC
Chroma-FP1-MDB (120V)
A B
MODBUS
Communication cable
2x22AWG
Twisted, Shielded
RS485
GFEP
Indication
Dry Contact
(NO/NC)
*See table
NO-COM NC-COM
GFEP Tripped SHORT OPEN
GFEP NOT Tripped OPEN OPEN SHORT
Heater
Load
connection
240 VAC, 30A
CS-HL
(By Chromalox)
NO NC HE C C1 2
Aquastat
(option)
Heat
Indication
(24VAC)
Chroma-FP2 (240V)
L2L2L1L1
*GFEP Indication -Dry Contact
Branch circuit protection
and disconnect provided
by installer. Max. 30A
Main
Supply
240 VAC
GFEP
Indication
Dry Contact
(NO/NC)
*See table
Heater
Load
connection
240 VAC, 30A
CS-HL
(By Chromalox)
L2L2L1L1 NO NC HE C C1 2
Aquastat
(option)
Heat
Indication
(24VAC)
Chroma-FP2-MDB (240V)
A B
MODBUS
Communication cable
2x22AWG
Twisted, Shielded
RS485
*GFEP Indication -Dry Contact
Branch circuit protection
and disconnect provided
by installer. Max. 30A
Main
Supply
240 VAC
GFEP
Indication
Dry Contact
(NO/NC)
*See table
NO-COM NC-COM
GFEP Tripped SHORT OPEN
GFEP NOT Tripped OPEN OPEN SHORT
Incorrect voltage may cause fire or
seriously damage the unit.
Heater Load Connection
Provide terminals L, N with up to
240 VAC, 30 AMP
Make sure the wire Gauge (AWG) is suitable
for the circuit Amperage draw, as specied
in the NEC/ CEC table 1.
Incorrect voltage may cause fire or
seriously damage the unit.

10 11
Operating InstructionsConnecting FPC-02-OD-AB Slaves (Option)
Number of FPC-02-OD Slaves Master’s MAC Addresses Slave’s MAC Addresses
Up to 3 1-63 14-16
These slaves should be connected directly to A2,B2 terminals on the PYROCON19 thermostat
(inside the FPC-02-OD).
PYRO-JBOX junction box with built in 50VA, 110~24VAC transformer can be used,
allowing connection and powering of up to 3 slaves.
Option 1 – Direct Connection of 1 Slave
Option 2 - PYRO-JBOX (up to 3 FPC-02-OD)
Please refer to technician parameter P08 for Salve’s MAC Address
and to parameter P11 for Master/Slave conguration slaves).
PYROCON19
SLAVE #1
MAC
Address
14
A2 B2
PYROCON19
MASTER
MAC Address
for BMS 1...63
Default 1
A2 B2
PYROCON19
MASTER
MAC Address
for BMS 1...63
Default 1
A2 B2
A BR C A BR C A BR C A BR C
110 110
PYROCON19
SLAVE #1
MAC
Address
14
PYROCON19
SLAVE #2
MAC
Address
15
PYROCON19
SLAVE #3
MAC
Address
16
A2 B2A2 B2A2 B2
Turning the System ON and OFF
1. Press and hold the [ON] button for 0.5
seconds to turn the system ON or OFF.
2. The words “ON” or “OFF” will appear on display.
3. When ON, the green LED on the front panel.
Selecting Temperature Scale
1. Press the [+] button for Celsius.
2. Press the [-] button for Fahrenheit.
Selecting Automatic or Manual Mode
1. Press the [SELECT] button to switch
between modes:
“Automatic” Heating will start and stop
automatically depending on the set point
and ambient temperatures.
“Manual ON” Heating will start regardless
of the set point and ambient temperatures
and will stop after a preset time
(pls. refer to the “Manual ON” section in
the tech. settings).
NOTE: Mode will always return to “Automatic”
after switching the unit OFF and ON.

12 13
Technician Settings
Use the technician settings mode to view and
adjust the following parameters:
Number of FPC-02-OD Slaves/Master’s MAC Addresses
P01 Temperature set point P07 Not in use
P02 Lower ambient temperature limit
to stop heater P08 MODBUS MAC Address for home automation system (option)
P03 Time delay before stopping the heater P09 Commissioning / Test mode
P04 ON time for manual mode P11 Master/Slave
P05 Not in use P15 Temperature sensor calibration Offset
P06 Enable/Disable 2nd temperature
sensor logic (Aquastat) Restore defaults
Save changes and exit
technician settings mode
Enter Technician Settings Mode
1. Disconnect power and open the internal door
by releasing the two screws.
2. Move DIP switch S1 located on the side of
thermostat to ON position.
3. Press the [SELECT] and [+] buttons
simultaneously to move forward to the next
technician parameter.
4. Press the [SELECT] and [-] buttons
simultaneously to return to the previous
technician parameter.
Heater Indication
Black icon – Heater ON
White icon – Heater OFF
When ON, the red LED on the front panel
indicating heater operation will also turn ON .
Heater ON Heater OFF
Heater ON Heater OFF
Heater ON Heater OF
F
Heater ON Heater OFF
Operating Instructions
(Cont.)
Snow Flake Icon and
Digital Time Indication
A solid snow ake icon will appear on display
during normal heater operation.
A blinking snow ake icon will appear on display
during heater off delay or when manual mode is
activated.
The digital clock will count down the remaining
time until the heater is turned off.
The snow ake icon will disappear from display
as long as the heater is turned off.
Enter technician settings mode
Save Changes and Exit Technician
Settings Mode
1. Move DIP switch S1 located on the side of
thermostat to OFF position.
IMPORTANT: Changes made to technician
parameters will not take effect as long
as DIP switch S1 is in ON position.

14 15
P02 - Lower limit temperature for heating
1. Press the [SELECT] and [+] buttons
simultaneously.
2. “P02” and the low limit temperature will
appear on display.
When the temperature on the temperature
sensor drops below the low temperature
limit, the heating system will stop.
3. Use the [+] and [-] buttons to adjust the
temperature set point.
Range: -40…+23°F / -40…-5°C
Default: -40°F / -40°C
4. Press the [SELECT] and [+] buttons
simultaneously again.
5. The word “ON” or “OFF” will appear on display.
6. Use the [+] and [-] buttons enable (ON)
or disable (OFF) the P02 parameter.
If disabled, the heating system will operate
without low temperature limitations.
Parameters:
P01 - Temperature set point
1. Move DIP switch S1 located on the side of
thermostat to ON position.
2. “P01” and the temperature set point will
appear on display.
3. Use the [+] and [-] buttons to adjust the
temperature set point.
Range: 5…60°F / -15…+15°C,
Default: 37°F / 3°C
As long as the ambient temperature is lower
than the temperature set point P01, the
Chroma-FP will turn ON.
Temperature
set point
Low limit
Temperature
P02
enabled
P02
disabled
Low limit
Temperature
P02
enabled
P02
disabled
P04 - Manual mode ON time
1. Press the [SELECT] and [+] buttons
simultaneously.
2. “P04”, “On” and the time “Manual ON” mode
time period will appear on display. The hours
will blink.
3. The delay time parameter denes a time
frame in which the heater remains ON after
receiving an “Manual ON” command.
4. Use the [+] and [-] buttons to adjust the hours
of the working time.
Range: 00...99 hours Default: 03 hours
5. Press the [SELECT] and [+] buttons
simultaneously again. The minutes will blink.
6. Use the [+] and [-] buttons to adjust the
minutes of the working time.
Range: 00...59 minutes Default: 00 minutes
Manual ON
(minutes)
P05 -Not in Use
1. Press the [SELECT] and [+] buttons
simultaneously.
2. “P05” will appear on display.
3. Proceed to P06.
P03 – Time delay before stopping the heater
1. Press the [SELECT] and [+] buttons
simultaneously.
2. “P03”, “dL” and the time delay before
stopping the heater (Hold ON) will appear
on display. The hours will blink.
3. Use the [+] and [-] buttons to adjust the hours
of the time delay.
Range: 0000...9999 minutes Default: 120 minutes
Note 1. The time delay countdown will start
when the ambient temperatures rises above the
set point temperature.
Time delay
(minutes)
Technician Settings (Cont.)

16 17
P06 – Enable/Disable Temperature sensor /
Aquastat logic
1. Press the [SELECT] and [+] buttons
simultaneously.
2. “P06” and the number “0” or “1” will appear
on display.
3. Use the [+] and [-] buttons to select between:
“0” Logic set by both TEMPERATURE
SENSOR
and AQUASTAT (default).
“1” Logic set by TEMPERATURE sensor only.
“2” Logic set by AQUASTAT sensor only
P09 – Test conditions mode /
Technician commissioning mode
Turn ON test conditions to check the functionality
of the system regardless of temperature sensors
parameters (i.e. during the summer).
In test conditions, the Ambient temperature is
always -7°C/19°F.
1. Press the [SELECT] and [+] buttons
simultaneously.
2. “P09” will appear on display. The hours will blink.
3. Use the [+] button to enter
test/commissioning mode – the word “Test”
will appear on display.
4. Use the [-] button to manually exit test/com-
missioning mode – the word “Test” will disap-
pear from display.
Note: If the technician did not manually exit test/
commissioning mode, the unit will automatically
return to normal mode after 5 hours.
P11 – Master/Slave
1. Press the [SELECT] and [+] buttons
simultaneously.
2. “P11” will appear on display.
3. Use the [+] and [-] buttons to select between:
• “ΠA” - Master (When using one FPC-02-OD
or when controlling other
• “SL” - Slave (controlled by another
FPC-02-OD connected to A,B)
P07 – Not in use
1. Press the [SELECT] and [+] buttons simultaneously.
2. “P07” will appear on display.
3. Proceed to P08.
P08 - MODBUS MAC Address
(for MDB models only)
1. Press the [SELECT] and [+] buttons
simultaneously.
2. “P08” and the MODBUS MAC Address will
appear on display.
3. Use the [+] and [-] buttons to set the MAC
Address of the unit.
4. Setting the MAC address for the unit
will make it available through the home
automation system.
Range: 0 – 60. Select “0” for
NO COMMUNICATION system (default).
Logic by temperature
sensor only
Logic by temperatur
e
sensor & aquastat
Logic by aquastat
sensor only
Logic by temperature
sensor only
Logic by temperature
sensor & aquastat
Logic by aquastat
sensor only
MODBUS
MAC Address
Technician Settings (Cont.)
Test
conditions mode
SlaveMaster

18 19
P15 – Temperature sensor calibration offset
1. Press the [SELECT] and [+] buttons
simultaneously.
2. “P10” will appear on display.
3. Use the [+] button to adjust the offset for
calibration of measured temperature.
Range: -9…+9°F / -6…+6°C
Default: 0°F / 0°C
Note: If the technician did not manually exit
testcomissioning mode, the unit will automatically
return to normal mode after 5 hours.
DIP switch S2 - Short measuring times
(test only)
Use DIP switch S2 to short the measuring
times as follows:
• “ON” - Short measuring times – for test/
commissioning only (measuring times will
be divided to 60).
• “OFF” - Normal operation.
Short measuring times:
A real 1 hour will take 1 minute and a real
1 minute will take 1 second.
DIP switches S3 and S4
– Not in use – must remain OFF
Use DIP switch S6 located on the side of
thermostat to select BMS (A,B) network protocol:
• S6 ON – BACnet
• S6 OFF - MODBUS
Restore Default Values
Important: Make sure the unit is turned OFF
(the word “OFF” should appear on display).
1. Move DIP switch S1 to ON position.
2. Press and hold the [ON] button for 10
seconds. The thermostat will beep.
3. Move DIP switch S1 back to OFF position.
Technician Settings (Cont.)
BMS – BACnet/Modbus
(FPC-02-OD-AB only!)
Offset
Save changes and exit
technician settings mode
Save changes and Return to Normal Display
In order to save changes and return to normal
display, move DIP switch S1 back to OFF
position.
IMPORTANT: Changes made to technician
parameters will not take effect as long as
DIP switch S1 is in ON position.
S3 OFF,
S4 OFF
Modbus
BACnet

20 21
Temperature Sensor Readings is
Out of Reliable Measuring Range
• Low temperature readings:
Ambient temperature < -31°F/-35°C
• High temperature readings:
Ambient temperature > 91°F/35°C
The GFEP is designed to protect circuits
by sensing when a ground fault or
earth leakage is greater than 30mA and
automatically open the circuit.
The GFEP should be tested regularly, at
least once per month.
• Press TEST button “T”, GFEP should open
automatically and the red indicator should
act.
• Move the handle back to “ON” position to
return to normal operation and reestablish
power and protection.
• Test button should be pressed 3 times and
the GFEP should work normally.
• If the GFEP is not operating normally, it must
be replaced.
Slaves – Communication Error
Aux1 - Slaves Communication Error
• “Aux1” and “00” Will appear on display.
Temperature Readings and
Communication Errors
GFEP
Temperature Sensor is Not Connected
or Short Circuit
• “SensErr 2” Will appear on display.
• “SensErr” Will appear on display with
internal sensor fault
Temperature
Sensor error
2
Slaves
communication
error
TEST
button Handle
“ON”
“TRIPPED”
Indicator
(red)

22 23
Object List - Modbus (FPC-02-OD-AB only!)
Modbus
Use DIP switch S6 located on the side of thermostat
to select BMS (A,B) network protocol - S6 OFF –
Modbus
MODBUS RTU Mode, Address Slave1-127,
Baud rate: 9600, n, 8, 1
Supported Commands:
0x03 = Read Holding Registers (for all).
0x06 = Preset Single Register (For R/W registers only),
Command 0x2B is used to identify controller
Object List - BACnet (FPC-02-OD-AB only!)
Use DIP switch S6 located on the side of
thermostat to select BMS (A,B) network
protocol - S6 ON – BACnet
N° Object Value Object Name Default Access
1 AnalogValue_#0 -10...25°C (14...77°F) SetPoint 3°C (37°F) R/W
2 AnalogValue_#1 -40...0°C (-40...32°F) LowLimitHeat -35°C (-31°F) R/W
3 AnalogValue_#2 1...6000 min HeatersOffDelay 90 min R/W
4 AnalogValue_#3 10...6000 min ManualPeriodTime 240 min R/W
5 AnalogValue_#6 10...1999 min StaggeringTime 120 min R/W
6 AnalogValue_#7 -40...35°C (-40...95°F) TemperatureOutside - R
7 AnalogValue_#8 0...6000 min HeatersOffTimeDelay - R
8 AnalogValue_#9 0...4 HeaterMode 0 R/W
9 AnalogValue_#20 -10...15°C (14...59°F) InternalTemperature(T3) - R
10 AnalogValue_#24 1… 4194303 BacnetDeviceInstanceNumber 315000+MAC R/W
11 AnalogValue_#29 0...2 TemperatureAquastatLogic 0 R/W
0 – No error 1 – Internal sensor 2 – External sensor
12 AnalogValue_#30 0...99 Sensors error 0 R/W
13 BinaryInput_#2 1-On,0-Off SettingMode - R
14 BinaryInput_#3 1-On,0-Off ShortTimeMode - R
15 BinaryInput_#4 1-On,0-Off StageringMode - R
16 BinaryInput_#5 1-On,0-Off StageringMode - R
17 BinaryInput_#8 1-On,0-Off Aquastat_Signal - R
18 BinaryOutput_#0 1-On,0-Off Heater 1 - R
19 BinaryOutput_#1 1-On,0-Off Heater 2 - R
20 BinaryOutput_#2 1-On,0-Off Heater 3 - R
21 BinaryOutput_#3 1-On,0-Off Heater 4 - R
22 BinaryOutput_#4 1-On,0-Off Heater 5 - R
23 BinaryOutput_#5 1-On,0-Off InternalHeater - R
24 BinaryValue_#0 1-On,0-Off OnOff 0-Off R/W
25 BinaryValue_#2 1-On,0-Off C_F_Scale 0-Off R/W
26 BinaryValue_#4 1-On,0-Off CommissioningMode 0-Off R/W
27 BinaryValue_#5 1-On,0-Off RestoreDefaults 0-Off R/W
28 BinaryValue_#14 1-On,0-Off GroundFault 0-Off R
N° Object Value Object Name Default Access
1 0 [0x00] -40...35°C (-40...95°F) TemperatureOutside - R
2 1 [0x01] -10...25°C (14...77°F) SetPoint 3°C (37°F) R/W
3 2 [0x02] -40...0°C (-40...32°F) LowLimitHeat -35°C (-31°F) R/W
4 3 [0x03] 1...6000 min HeatersOffDelay 90 min R/W
5 4 [0x04] 10...6000 min ManualPeriodTime 240 min R/W
6 5 [0x05] 10...1999 min StaggeringTime 120 min R/W
7 6 [0x06] 0...2 TemperatureAquastatLogic 0 R/W
8 7 [0x07] 0...4 HeaterMode 0 R/W
9 8 [0x08] 1-On,0-Off CommissioningMode 0 R/W
10 9 [0x09] 1-On,0-Off Heater1 - R
11 10 [0x0A] 1-On,0-Off Heater2 - R
12 11 [0x0B] 1-On,0-Off Heater3 - R
13 12 [0x0C] 1-On,0-Off Heater4 - R
14 13 [0x0D] 1-On,0-Off Heater5 - R
15 14 [0x0E] 1-On,0-Off Aquastat_Signal - R
16 15 [0x0F] 1-On,0-Off SettingMode - R
17 16 [0x10] 1-On,0-Off ShortTimeMode - R
18 17 [0x11] 1-On,0-Off StageringMode - R
19 18 [0x12] 1-On,0-Off StageringMode - R
20 19 [0x13] 1-On,0-Off OnOff 0-Off R/W
21 20 [0x14] 1-On,0-Off C_F_Scale 0-Off R/W
22 21 [0x15] 1-On,0-Off RestoreDefaults 0-Off R/W
23 22 [0x16] 1-On,0-Off GroundFault 0-Off R
24 23 [0x17] -40...35°C (-40...95°F) InternalTemperature(T3) 0-Off R
25 24 [0x18] 1-On,0-Off InternalHeater - R
26 25 [0x19] 0...99 SensorsError - R/W
0 – No error 1 – Internal sensor 2 – External sensor
The MODBUS Register No. X is addressed in the MODBUS Register Address (PDU) X-1.
All Registers are signed Integer 16 bit.
BACnet MSTP Baud rate: 9600, 19200, 38400, 76800 no parity, 8 data bits, 1 stop bit

24
Limited Warranty:
Please refer to the Chromalox limited warranty applicable to this product at
http://www.chromalox.com/customer-service/policies/termsofsale.aspx.
Chromalox, Inc.
1347 Heil Quaker Boulevard
Lavergne, TN 37086
[phone]
www.chromalox.com
© 2023 Chromalox, Inc.