Preferred JC-15D2 Installation & Operation Instructions

Preferred Utilities Mfg Corp
Preferred Instruments div.
31-35 South Street, Danbury CT 06810
203-743-6741
Why should Flue Gas Temperature be Monitored ?

Every 40 F increase in Flue Temperature results in an approximate 1% decrease in Boiler/Furnace Efficiency.
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High Flue Temperature can indicate a need to clean soot or scale build-up on the tubes.
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High Flue Temperature can indicate fallen refractory, baffle damage, short circuiting, or overfiring.

High Flue Temperature can indicate insufficient feedwater
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Hartford Steam records show that Boiler Overheating is the primary reason for Boiler Damage.
be made directly from the faceplate of the instrument by navigating through user friendly menus. JC_Edit PC software can also be
used to configure the JC-15D2 via the USB port and to import the Alarm/Event History into JC_Edit.
Any J or K thermocouple can be used with the JC-15D2 to sense the temperature. The 20" 104087D and the 12" 104087E are
constructed with an Inconel sheath for corrosion protection, ½" male NPT process connection, cast iron head with terminal block,
and ½" female NPT electrical connection.

Table of Contents:

SAFETY .............................................................................. 2
Alarm Sequence ................................................................. 2
Operation ............................................................................ 3
Installation ........................................................................... 4
JC-15D2 Indicator Mounting: ......................................... 4
Temperature Sensor Mounting: ..................................... 4
Wiring: ............................................................................ 4
Menu Map ........................................................................... 5
Screen Settings.............................................................. 6
Alarm Setpoint Parameters ............................................ 6
Configure/Setup Parameters ......................................... 6
SDI-JC-15D2 rev 11-17-21
www.preferred-mfg.com
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Precise digital Temperature Indication

Type J or K thermocouple Input

Field selectable: T/C type, F/C, Alarm Setpoints, Alarm Delays, ....
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Manual Reset High-High "shutdown" Alarm
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Color Touchscreen
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50 pt Alarm/Event History, Time/Date Stamped
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Only 4 7/8" deep, fits in most existing burner control cabinets

Plug-in field wiring terminals

Ethernet, RS485, and 4-20mA outputs for Bldg Automation Systems

USB port for configuration read/write with free JC_Edit Windows software
The JC-15D2 Flue Gas Temperature Monitor is a digital Indicator and Alarm. Flue gas
temperature is displayed on a backlit color touchscreen LCD display. An intuitive
bargraph display and alarm messages provide clear stack temperature status. Bargraph
Scaling, Alarm Setpoints, and Time Delays are all field selectable. All adjustments can
JC-15D2
Flue Gas Temperature Monitor
Installation & Operation Instructions
JC-15D2 Features
Description
Troubleshooting ................................................................. 7
Modbus Communications ................................................... 7
Specifications ..................................................................... 8
Ordering Information: ......................................................... 8
Full Size Template ............................................................. 9
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