Page 1
WIRED RAIN-CLIK® & RAIN/FREEZE-CLIK® SENSORS
Rain/Freeze-Clik
Hunter Controllers
SEN
SEN
C
TEST
P MV
Figure 1
Figure 3
Manually depress the spindle
at the top of the Rain-Clik
Rain/Freeze-Clik
Shade
Figure A
Rain/Freeze-Clik
Hunter Controllers
SEN
SEN
C
TEST
P MV
Figure 1
Rain/Freeze-Clik Other Controller
Valves
Common Wire to All Valves
Solenoid
21C 3 4
Figure 3
Manually depress the spindle
at the top of the Rain-Clik
Standard Mount
Figure 4
Vent Ring
Figure 3
Manually depress the spindle
at the top of the Rain-Clik
Rain/Freeze-Clik
Hunter Controllers
SEN
SEN
C
TEST
P MV
Figure 1
Rain/Freeze-Clik Other Controller
Solenoid
21C 3 4
Figure 3
Manually depress the spindle
at the top of the Rain-Clik
Figure 4
Vent Ring
INSTALLATION CARD
Introduction
Your new wired Rain-Clik combines optimal performance, water savings, and
installation convenience in an economical rain sensor package.
The wired Rain-Clik acts as a switch to break the circuit to the solenoid valves
of the irrigation system when it has rained. This allows the timer to advance
as scheduled, but keeps the valves from opening the water flow. Once the
Rain-Clik has dried sufficiently, the switch closes again to allow for normal
operation. The Rain-Clik is supplied with 25' (8 m) of wiring for installation on
your controller.
Unlike other rain sensors, you do not need to determine the setting for rainfall
shuto. The wired Rain-Clik is self-adjusting. With Rain-Clik, your sprinkler
system will shut down within the first few minutes of any rainfall. The total
amount of rain received is registered inside the unit and determines how long
your system will stay o. The wired Rain/Freeze-Clik includes a freeze sensor
that is designed to keep the system from operating at or below 37°F (3°C).
At temperatures above 37°F (3° C), it will close the circuit for normal sprinkler
operation. The freeze sensor prevents ice on landscapes, roadways, and
walkways.
Helpful Hints for Mounting
A. When looking for a suitable
B. Correct placement of the Rain/
C. As described in the “Operation” section of this manual, “reset
Mounting
Standard Model
Using the screws provided within the package, mount the Rain-Clik on any
surface where it will be exposed to unobstructed rainfall, but not in the
path of sprinkler spray. The switch housing portion must be upright
(as pictured), but the swivel-bracket can be moved for mounting on an
angled surface. Loosen the locknut and screw before swiveling the bracket,
and then re-tighten.
Once the Rain-Clik is mounted, run the wire to the controller, and fasten
it every few feet with wire clips or staples for best results. Be careful not
to cut through the wire insulation with fastening hardware or cha the
insulation when routing wire through or around metal materials (e.g.,
gutter, siding, etc.). If an extension to the wire provided is needed, use
the following table to determine the minimum wire gauge needed:
location such as the side of a
Shade
building or post, the closer the
Rain-Clik is to the controller, the
shorter the wire run will be. This
will also minimize the chance for
wire breaks.
Figure A
Rain/Freeze-Clik
Freeze-Clik model is important
for accurate temperature sensing. The best location would be out of
direct sunlight (Figure A).
rate” refers to the amount of time it takes the Rain-Clik to dry out
sufficiently for the sprinkler system to be allowed to come back
on. The mounting location will aect this rate and should be taken
into consideration should extreme conditions exist. For example,
mounting the Rain-Clik on a very sunny, southern end of a building
may cause the Rain-Clik to dry out sooner than desired. Similarly,
mounting on the northern end of a building with constant shade may
keep the Rain-Clik from drying soon enough.
Standard Mount
Gutter Mounting
(SGM Sold Separately):
The gutter mount can be purchased
as an optional accessory for your
Rain-Clik (order p/n SGM). The SGM
allows the Rain-Clik to be mounted
directly to the side of a gutter. To
install your Rain-Clik on a gutter,
remove the screw, nut, and standard
metal extension arm supplied with
the Rain-Clik, and reinstall the screw
and gutter mount. Position the
gutter mount on the edge of the
gutter and twist the thumbscrew to
secure it in place.
Gutter Mount (Optional)
If the extension needed is: 25-50'/8-15 m 50-100'/15-30 m 100'+/30 m
Wiring to Your Irrigation System
IMPORTANT: The Rain-Clik is sold and designed for hookup to
24-volt irrigation controllers only.
Wiring to Hunter Controllers
The Rain-Clik connects directly to the controller. This allows you to easily
override the sensor by using the Sensor switch on the front panel.
1. Remove the jumper from the two “SEN” terminals.
2. Route the wires from the rain sensor up through the same conduit
3. Connect one wire to the terminal labeled “SEN” and the other wire to
opening used for valve wiring.
the other “SEN” terminal (Figure 1).
Rain/Freeze-Clik
Figure 1
Hunter Controllers
use: 20 AWG/0.8 mm 18 AWG/1 mm 16 AWG/1.3 mm
C
P MV
SEN
SEN
TEST
Page 2
Wiring to Your Irrigation System (cont.)
Rain/Freeze-Clik
Hunter Controllers
SEN
SEN
C
TEST
P MV
Figure 1
Figure 3
Manually depress the spindle
at the top of the Rain-Clik
Figure 4
Vent Ring
Vents
Figure 4
Vent Ring
Vents
Wiring to Other Controllers
The most common situation is shown below.
1. 24-Volt Solenoid Valves Only (Figure 2)
With the two wires from the Rain-Clik at the controller, locate the
“common ground” wire of the solenoid valves. If it is connected to the
common terminal on the controller, disconnect it. Attach one wire of
the Rain-Clik to the “common” terminal (usually marked “C”) on the
controller. Attach the other wire of the Rain-Clik to the common wire
leading to the valves.
Note: The common wire to the valves does not have to be interrupted at
the controller. The Rain-Clik can be wired anywhere along the common
wire line.
Operation Check to Verify Correct Wiring
Turn on one zone of the irrigation system that is visible while you
are in reach of the Rain-Clik. Manually depress the spindle at the top
of the Rain-Clik until you hear the switch “click” o. The sprinkler
zone should stop instantaneously. If it does not, check wiring for
correctness. It is not necessary to “wet” test the Rain-Clik, although it
will test the operation suciently, if desired (Figure 3).
Adjustments and Operation
The Rain-Clik can keep the irrigation system from starting or continuing
aer rainfall. The time that it takes the Rain-Clik to reset for normal
sprinkler operation aer the rain has stopped is determined by weather
conditions (wind, sunlight, humidity, etc.). These conditions will
determine how fast the hygroscopic discs dry out, and since the turf
is also experiencing the same conditions, their respective drying rates
will roughly parallel each other. So when the turf needs more water, the
Rain-Clik is already reset to allow the sprinkler system to run at the next
scheduled cycle.
Rain/Freeze-Clik Other Controller
Common Wire to All Valves
Figure 2
Manually depress the spindle
at the top of the Rain-Clik
Figure 3
21C 3 4
Solenoid
Valves
There is an adjustment capability on the
Rain-Clik that will slow down the reset
rate. By closing the “vent” (Figure 4) to
completely or partially cover the ventilation
slots, the hygroscopic discs will dry out more
slowly. This adjustment can compensate for
an “overly sunny” installation location, or
peculiar soil conditions. Experience will best
determine the ideal vent setting.
Rain-Clik utilizes single-disc technology
to turn o your sprinkler system within
the first five minutes of rainfall. For light
showers and amounts of rain less than ¹⁄₈" (3 mm), the single disc will shut
o the system for 30 minutes to 4 hours, depending on weather conditions.
Adjusting the vent cap will not have an eect on the dryout time of the single
disc. For heavier rain showers in excess of ¹⁄₈" (3 mm), the disc stack under the
vent cap will hold the system o for an appropriate amount of time. The disc
stack dryout time is what the vent cap adjustment controls.
Bypassing the Sensor
The Hunter X-Core®, Pro-C®, ICC2, and I-Core® controllers are equipped with a
built-in bypass that allows you to override an active sensor. For controllers not
equipped with this feature, should you desire to bypass the operation of the
Rain-Clik for any reason (i.e., turn on your system even though the Rain-Clik
has shut “o” due to rainfall), there is a simple way to do this: add our Bypass
Switch Box. This mounts on or next to the controller, and by simply moving the
switch, the Rain-Clik is bypassed.
Note: Using the “manual” switch on non-Hunter controllers typically will not
bypass the sensor.
Maintenance
There is no required maintenance for the unit. The Mini-Clik does not have to
be removed or covered for “winterizing” purposes.
Troubleshooting
Follow these simple checks rst before assuming the unit is bad and replacing it. If
the system will not come on at all:
A. First, check to see that the Rain-Clik discs are dry and the switch “clicks” on
and o freely by pressing the top of the spindle.
B. Next, look for breaks in the wire leading to the Rain-Clik and check all wire
junctions.
C. Verify temperature is above 37° F (3°C) (for Rain/Freeze-Clik model).
If the System Will Not Shut O Even Aer Heavy Rainfall:
A. Check wiring for correctness (see “Operation Check to Verify Correct Wiring”).
B. Is the rainfall actually hitting the Rain-Clik? Check for obstructions to
rainfall (e.g., overhangs, trees, or walls).
Manufactured under U.S. Patent Pending
All Rain-Clik models are listed by Underwriters Laboratories, Inc. (UL). Samples of these
devices have been evaluated by UL and meet the applicable UL standards for safety.
© 2018 Hunter Industries Incorporated | www.hunterindustries.com
Need help? Visit hunter.direct/rainclikhelp
P/N 700881 LIT-358 D 2/18
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