Watts PM-070, Additional Installation, Operation And Maintenance Instructions

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3
Installation - Outdoor Sensor PM-070
Step One
Mounting The Sensor
NOTE: The temperature sensor (therm-
istor) is built into the PM-070 enclosure.
• The PM-070 can be mounted directly
onto a wall and the wiring should
enter through the back or bottom
of the enclosure. Do not mount the
PM-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 PM-070 should be mounted on
a wall which best represents the heat
load on the building (a northern wall
for most buildings and a southern fac-
ing wall for buildings with large south
facing glass areas). The PM-070
should not be exposed to heat sourc-
es such as ventilation or window
openings.
• The PM-070 should be installed at an
elevation above the ground that will
prevent accidental damage or tam-
pering.
Remove
cover by
sliding
upwards
away from
the base.
To wire from
the back,
remove the
knock-out in
the sensor
base.
If using
conduit,
remove
the flexible
plug from
the base
bottom.
Attach the
base to
the wall,
soffit or
electrical
box.
Sensor with
wiring from back
Sensor with
wiring from
bottom
S1
S1
S1
S1
S1
S1