Install Instructions

7 of 44 © 2020 654_D - 02/20
Sensor Wiring
Mounting the Outdoor Sensor -------------------------------------------------------------------------- --------------------------------------------------------------------------
• 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 or
Com Sen terminal on the control and not to earth ground.
• Follow the sensor testing instructions in this brochure and
connect the wires to the control.
• Replace the front cover of the sensor enclosure.
Wiring the Outdoor Sensor ----------------------------------------------------------------------------- -----------------------------------------------------------------------------
Mounting the Universal Sensor ------------------------------------------------------------------------- -------------------------------------------------------------------------
The Universal Sensor should be placed downstream of a pump or after an
elbow or similar fitting. This is especially important if large diameter pipes
are used as the thermal stratification within the pipe can result in erroneous
sensor readings. Proper sensor location requires that the fluid is thoroughly
mixed within the pipe before it reaches the sensor.
Strapped to Pipe
The Universal Sensor can be strapped directly to the pipe using the cable tie
provided. Insulation should be placed around the sensor to reduce the effect
of air currents on the sensor measurement.
• The 070 can be mounted directly onto a wall with the wiring
entering through the back or bottom of the enclosure. Do
not mount the 070 with the conduit knockout facing upwards
as 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 070 should be mounted on a wall which best represents
the heat load on the building (a northern wall for most build-
ings and a southern facing wall for buildings with large south
facing glass areas). The 070 should not be exposed to heat
sources such as ventilation or window openings.
• The 070 should be installed at an elevation above the ground
that will prevent accidental damage or tampering.
Remove
cover by
sliding
upwards
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
and sensor
common
terminals on
tekmar control
S1
S1
Slide cover back
over base
These sensors are designed to mount on a pipe or in a temperature immersion well.