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INSTALLATION 

 
Use the 

KilnTroller II

 with either a FireRight “Interface Panel” or “Power 

Controller”.  If you have chosen the interface panel, mount it on the kiln’s electrical 
box, and connected it to the kiln's power relay.  If, instead, your system has a power 
controller, mount it on the wall just below the kiln’s breaker box or immediately 
above its power receptacle.  Please note that the operating temperature for these 
units must not exceed 131

°

F (50

°

C). 

 
Interface panels work with both 120vac and 208-240vac kilns.  If using the Interface 
Panel, hook it up according to diagram “C”, then jumper terminals x1 and x2 
according to either diagram “A” or “B”.  Standard power controllers work with for 
208-240vac kilns only; make the line and kiln connections as shown in diagram 
“D”.  Flush mounting panels may be connected for either 110/120v or 208/240v.  If 
using the panel mounting unit, hook it up according to diagram “C”, then jumper 
terminals x1 and x2 according to either diagram “A” or “B”.   
 

Fasten the temperature sensor to the kiln

, at the sensor port (normally provided for 

“KilnSitter” tubes), or at one of the peepholes.  If the sensor should happen to fall 
out, 

an over-firing will likely spoil the ware being fired, and might seriously

 

damage the kiln

.  Plug the sensor cable into the 

SENSOR CABLE

 receptacle on 

the back of the controller.  Observe polarity when connecting the sensor cable to the 
sensor: connect the (+) side of the element to the yellow wire, and it's (-) side to the 
red wire. 
 
Plug the control cable into the 

CONTROL CABLE

 receptacle on the back on the 

temperature controller.  Connect its other end to a like receptacle on the interface 
panel or power controller. 
 
To avoid problems with electrical interference, please keep both of these cables well 
away from the power line or kiln wiring. 
 

OPERATION 

 

To operate 

the KilnTroller II

, proceed as follows: 

 
1.  Push the 

ON-OFF

 button to turn on the controller. 

2.  Select either the 

SOAK

 or 

SHUT-OFF

 mode. 

3.  While holding  the 

DISPLAY LIMIT

 button in, adjust the recessed 

LIMIT ADJ

 to the desired temperature setting (normally determined 

from standard cone charts).  

4.  If you have selected the soak mode, the firing will begin immediately.  If 

you choose the shut-off mode, the firing will not begin until you press 
the 

RESET

 button. 

5.  In the soak mode, the controller will bring the temperature at the sensor 

up to the limit setting, then switch the kiln on and off as necessary to 
hold it there.  The HEATING 

(Ht)

 light and flashing SOAKING 

(Sk)

 

light will alternate back and forth accordingly. 

6.  In the shut-off mode, the controller will latch the kiln off upon reaching 

the limit setting, and allow it to cool at its own rate.  At shut-off, the 
HEATING 

(Ht)

 light will go off, and the SHUT-OFF 

(S.O.)

 light will 

come on to indicate that the firing is complete.. 

7.  When a personal computer is operating the system, the 

PC 

and 

Ht

 lights 

operate together to indicate that the heating command is coming from 
the computer, not from the controller.  The computer overrides the 
controller's shut-off  latch.. 

8.  When done with the firing, it’s good practice to (a) leave the 

SELECT

 

switch in the 

SHUT-OFF

 mode, (b) turn the 

LIMIT ADJ

 all the way 

down, and (c) turn off the controller. 

 

 

The 

SENSOR

 warning light indicates a  

missing, reversed or burned-out sensor. 

 

 

SERVICE 

 

If you have questions, please give the dealer or kiln manufacturer from 
whom you purchased your controller the first opportunity to assist you. 

Your electrical service carries 

HIGH VOLTAGES

which can cause 

LETHAL ELECTRICAL SHOCKS

Improper connections can produce safety hazards, 

and may damage this device.  If you have no wiring 

experience, or are unsure of your planned hook-up 

please 

REFER THE WIRING OF THIS DEVICE TO 

A SKILLED ELECTRICIAN

 
FireRight Controls warrants 

KilnTroller II

 

units for one-year from the date 

of purchase.  We will repair or replace, without charge, units that fail 
because of defective material or workmanship. 
 
Beyond the warranty period, factory service is available a reasonable flat 
rates, and can be handled through your dealer, or factory-direct.

 

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