Larson Electronics, LLC
Phone: (877) 348-9680
Fax: (903) 498-3364
www.larsonelectronics.com
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of
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EXP-TSTAT-125.250-60.250F-0.25-V1-15L
MOUNTING
Note:
Do not mount thermostat where it will be subject to vibra-
tion, shock, grease, dust, lint or corrosive vapors. Do not mount
adjacent to a large magnetic contactor, as vibration and shock will
cause thermostat to interact erratically — resulting in chattering of
the contactor.
The air temperature in and around the thermostat enclosure
should be kept as near to normal room temperature as possible...
never
above 150°F.
1.
Thermostat must be mount-
ed in a vertical position only.
2.
Use sheet metal or wood
screws through the two
5
/
16
”
diameter mounting holes in
mounting lugs to mount
control (see Figure 2).
3.
For controlling platen or die
temperatures, insert entire
sensing bulb into drilled holes
selected for snug slip fit.
The longer, more sensi-
tive Style 9 bulbs should be
used for controlling air tem-
peratures or pipe line heating.
4. NOTICE:
A.
Bending or deforming
sensing bulb will alter
control calibration —
requiring recalibration after installation. See CALIBRA-
TION section. If necessary, Style 9 bulbs can be
coiled
to 1” I.D. (see Figure 3).
B.
Do not kink capillary tube. The resulting constrictions in
fluid flow can destroy control function or broaden temper-
ature differential. Minimum capillary tube bending diame-
ter is
1
/
2
” I.D. (see Figure 4).
C.
Any deformations of bulb or capillary that result in leakage
of fluid from control renders control inoperative.
D.
Avoid passing control capillary tube through zones whose
temperature is in excess of controlled process temperature.
Erratic control or destruction of control function may result.
Mounting
Lugs
Capillary
Seal
Fitting
3"
3
7 / "
8
Figure 2
Figure 3
(Sensing Bulb)
Figure 4
(Capillary Tube)
Do Not
Bend or Kink
Crimped End
1
/
2
”
Rod
1”
WIRING
WARNING:
Hazard of Electric Shock. Disconnect all
power before wiring or servicing this control.
Failure to comply can result in electrical shock or
electrocution.
1.
Electric wiring to heater must be installed in accordance with
National Electrical Codes and local codes.
WARNING:
Use
copper conductors only.
2.
Entrance for wiring is provided by one
3
/
4
” NPT hole in the top
of the housing. Wiring to control housing must be in rigid con-
duit also in accordance with National Electrical Codes (NEC)
for hazardous locations.
3.
Set thermostat knob to OFF position and remove cover plate by
loosening and removing four (4) fastening screws (see Figure 5).
Figure 5
