WIRING
disconnect all supply circuits before wiring device.
wire device in accordance with local and national
electrical codes. MaxiMuM recoMMended wire size is
14 awg and recoMMended tightening torque for field wiring
terMinals is 7 to 17 in-lbs
electrical ratings stated in literature and on naMeplate
Must not be exceeded—overload on a switch can cause
failure on the first cycle.
field wiring Must be rated 90°c MiniMuM. for aMbient
teMperatures below -10°c, use suitable field wiring.
the external grounding terMinal is not to be used as
the priMary equipMent grounding terMinal. the internal
grounding terMinal shall be used as the priMary equip-
Ment grounding Means and the external grounding terMi-
nal is only for a suppleMental (secondary) grounding connection
where local authorities perMit or require such a connection.
to prevent seizure of enclosure cover, do not reMove
lubricant. threads should also be free of dirt, etc.
remove cover and wire device (see figure 2). wire directly to the terminal
block. an internal grounding terminal is located near the right-hand conduit
opening. replace cover and hand tighten to fully engage cover o-ring.
the connection of the device shall be Made by
cable entries or a stopping box suitable for the
conditions of use and correctly installed, and
certified by type of explosion protection - flaMeproof
enclosure ‘d’.
always hold a wrench on the teMperature housing
hex when Mounting the device. do not tighten by
turning the enclosure as this will daMage sensor
and weaKen solder and welded joints.
vertical Mounting (teMperature probe facing down)
is recoMMended; however device can be Mounted in
any orientation with adherence to previous warnings
and exceptions below.
remote mount types e121, e122 & f120 temperature devices may
be mounted vertically (temperature assembly facing down) or hori-
zontally. the conduit connection must be properly sealed (potted)
for horizontal installation. device may be surface mounted via the
four 1/4” screw holes on the enclosure or mounting bracket. it can also be
mounted directly to a rigid pipe using a thermowell.
Types 820E and 822E
units must be surface mounted. drill mounting holes per figure 1.
if a seal fitting is required, install the nipple and
the seal fitting prior to surface Mounting the con-
troller.
Mounting Bulb and Capillary
fully immerse the bulb and 6” of capillary in the control zone. for best con-
trol it is generally desirable to place the bulb close to the heating or cooling
source in order to sense temperature fluctuations quickly. be sure to locate
the bulb so it will not be exposed to temperature beyond the device range
limits.
avoid bending or coiling the capillary tube tighter
than 1/2” radius. exercise caution when MaKing
bends near the capillary ends.
if a separable well or union connector is used follow separate instruc-
tions included with them.
F
igure 1: 820E, 822E Mounting
clearance for 1/4 screw (4) places
iMt120-12
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