Installation – Irritrol RainSensor User Manual
The Sensor/Transmitter should be mounted
vertically with the antenna wire extending
straight down. Avoid installations where the
antenna wire would contact any metal
Mount the Sensor/Transmitter as close to the
Receiver as possible to avoid interference of
the wireless signal. The unit should be exposed
to unobstructed rainfall, but not in contact with
sprinkler spray or runoff from the roof.
Mounting to the outside edge of a rain gutter is
simple with the Quick-Clip
See Figure 11.
The Sensor/Transmitter can also be mounted
on any suitable solid structure using the sup-
plied stainless steel screws. To mount the
Sensor/Transmitter to conduit using the conduit
adapter, simply remove the Quick-Clip
bracket, replace with the provided conduit
adapter and secure the adapter to the conduit.
See Figure 12.
Wireless RainSensor with Freeze Sensor
Please follow the installation instructions for the
basic Wireless RainSensor with the following considerations:
Install the Sensor/Transmitter as close to the controller and Receiver as possible.
Although the Wireless RainSensor with Freeze option has a maximum range of 300',
it is highly recommended that the units be installed no greater than 100' apart. Install
the unit in the coolest location of the controlled area, out of direct sunlight and avoid-
ing direct southern exposure. A northeast to northwest shaded exposure works well.
Important: Avoid installation of the unit near a large heat storing object or
heat producing device such as a dryer vent or chimney.
Note: The installation and operation of a freeze sensor should be used in conjunction
with frequent visual checks of your sprinkler system. While freeze sensors are
designed to prevent inadvertent watering during near or below freezing conditions,
there are instances in which manual intervention is required. Air temperatures may be
above freezing while ground and vegetation temperatures remain below freezing.
Operation of your sprinkler system during these conditions may cause icing. Very
rapid air temperature changes may also result in inadvertent watering, should the
timing of sprinkling coincide with rapid temperature changes.
The Sensor/Transmitter should be inspected for damage and manually tested regularly
to ensure proper operation.
CAUTION: Visual checks and prudent manual watering suspension must be
used in conjunction with any freeze sensor.
A freeze sensor should only be relied upon as an aid along with good watering
practices including frequent visual checks. This device is not intended for
Rain gutter (cross section view)
Do not over-tighten