CCI Thermal Technologies XTK-12 - Thermostat Installation Kit (Process Heating Applications) - Manual (Page 2)

3.0CONVERTING FROM TAMPER-PROOF TO KNOB-ADJUST MODE
3.1Disconnect the power to the device. Remove the knurled cover from the housing assembly. Remove the socket-head cap
screw.
3.2Ensuring that the thermostat shaft remains aligned with the cap screw hole, place the knob onto the operating shaft and
thread it into the cap screw hole.
3.3When the operating shaft engages with the thermostat shaft, with
light finger pressure, gently spring the thermostat away from the
bracket assembly, as shown in Figure 3 (DO NOT press down on the
steel bracket). Rotate the knob one more full revolution to assure a
positive engagement of the thermostat. Release the thermostat.
3.4Upon release, the thermostat should spring back into its original
position. If the thermostat remains sprung down, a slight twisting of the
knob in both directions should create a positive engagement. The
knob should be able to turn through the entire temperature range but
should not turn one full revolution. If the knob turns completely around,
repeat 3.3.
4.0CONVERTING FROM KNOB-ADJUST TO TAMPER-PROOF MODE:
4.1Disconnect the power to the device. Remove the knurled cover from the housing assembly. Using finger pressure, gently
spring the thermostat away from the bracket assembly, as shown in Figure 3 (DO NOT press down on the steel bracket). While
the thermostat is sprung down, rotate the thermostat knob counterclockwise to remove the operating shaft.
4.2Ensuring that the thermostat shaft remains aligned with the operating shaft hole, place the socket-head cap screw into the
hole at the front of the housing and tighten. Replace the knurled cover.
5.0OPERATION
5.1TAMPER-PROOF MODE: To set the thermostat temperature:
5.1.1 Disconnect the power to the unit.
5.1.2 Completely remove the socket-head cap screw from the housing
assembly.
5.1.3 Insert a flat-head screwdriver into the slot cut in the thermostat
shaft.
5.1.4 Rotate the screwdriver to set the thermostat to the desired temperature. See Figure 4 to determine the temperature
setting. Turning the shaft clockwise increases the set point temperature, counterclockwise rotation decreases the set point
temperature (As a quick check, note that the thermostat will switch at the ambient temperature when the shaft is rotated).
5.1.5 Read the temperature from the front face of unit, as shown in Figure 4.
5.2KNOB-ADJUST MODE: To set the thermostat temperature:
5.2.1 Rotate the knob to set the thermostat to the desired temperature. Turning the shaft clockwise increases the set point
temperature, counterclockwise rotation decreases the set point temperature.
6.0INSTALLATION
6.1The type XT universal mounting bracket is designed for horizontal (knurled cover at the side) or vertical (knurled cover at
the top) mounting. Use the bracket supplied as a template to locate wall holes before attaching the bracket to the thermostat
and affixing the assembly to the wall.
3 6.2 The model XTW*****L has an external / " NPT fitting for installing into a tank wall. Use an open end wrench to tighten the
8
fitting to a mating tank fitting. Check for leaks and retighten if necessary.
6.3 All other model XTW thermostats are equipped with aluminum fins for increased temperature sensitivity.
PRESS
THERMOSTAT
TO SPRING
THERMOSTAT
IN ‘SPRUNG’
POSITION
Figure 3: ‘Springing’ the thermostat
Figure 4: Thermostat temperature setting
READ TEMPERATURE
HERE
SLOT IN THERMOSTAT SHAFT