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• The temperature sensor (thermistor) is built into the sensor
enclosure.
• The outdoor sensor can either be mounted directly onto a
wall and the wiring should enter through the back or bottom
of the enclosure. Do not mount the outdoor sensor with the
conduit knockout facing upwards because rain could enter
the enclosure and damage the sensor.
• In order to prevent heat transmitted through the wall from
affecting the sensor reading, it may be necessary to install
an insulating barrier behind the enclosure.
• The outdoor sensor should be mounted on a north-facing
wall. The outdoor sensor should not be exposed to heat
sources such as ventilation or window openings.
• The outdoor sensor should be installed at an elevation above the
ground that will prevent accidental damage or tampering.
Mounting the Outdoor Sensor
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• Connect 18 AWG or similar wire to the two terminals provided
in the enclosure and run the wires from the outdoor sensor
to the control. Do not run the wires parallel to telephone or
power cables. If the sensor wires are located in an area
with strong sources of electromagnetic interference (EMI),
shielded cable or twisted pair should be used or the wires
can be run in a grounded metal conduit. If using shielded
cable, the shield wire should be connected to the Com ter-
minal on the control and not to earth ground.
• Follow the sensor testing instructions in this manual and
connect the wires to the control.
• Replace the front cover of the sensor enclosure.
Wiring the Outdoor Sensor
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-----------------------------------------------------------------------------
Remove
cover by
sliding up-
wards away
from the
base.
To wire from
the back,
remove the
knock-out in
the sensor
base.
S1
S1
If using
conduit,
remove the
flexible plug
from the
base bottom.
S1
S1
Attach the
base to the
wall, soffit
or electrical
box.
S1
S1
Wires from outdoor
sensor to control’s
outdoor sensor and
sensor common
terminals
Sensor is built into
the enclosure
Wires from
outdoor sensor
and sensor
common
terminals on
tekmar control
S1
S1
Sensor Wiring
At the control:
• Connect the outdoor sensor to terminals 16 and 18.
Com
16
Boil
17
Out
18
