Question about Intermatic & Indoor/Outdoor Rain Tight Timer

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Trying to wire a toro rain sensor to Intermantic timer

My timer is 120/240 and the rain gage say not to hook up to 120/240 and the sensor is 24V . The only numbers i was able to locate are R8806 20Y and that was on the mounting plate of the clock.

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  • skdewey May 30, 2009

    The rain gage is model 53769. Unable to find a model number on the unit since that was on the paper tag inside the door that has been gone for years. The unit is a 14 day manual clock timer with pins you add to extend time. and the 14 day wheel you puss the pins in on the days you do not want to run. You have a elec connector that has four screw across the bottom for power in and power out and two leads that go up to a N.O. or N.C. switch operates of the pin on the clock. Using this for my sprinkler system / indexing head.

  • badenhop
    badenhop May 11, 2010

    Could you please add some more information about what you're trying to do with this timer and rain gauge?

    I couldn't find any information about the R8806 20Y timer you're talking about. Could you double-check that model number.

    What's the model number on the Toro gauge?

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It won't operate under mamuel

Posted on Nov 16, 2010

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Just cut the common wire and put one end in each of the 2 pins. The rain sensor just interrupts the signal to the valves when wet.

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Model# 57874


Copy following links to identify timer manual and general wiring illustration:
http://waterheatertimer.org/Woods-timers-and-manuals.html#sprinkler
http://waterheatertimer.org/images/orbit-connections.jpg
Do not connect voltage directly to COM and Pump terminals... these terminals have their own 24Volt AC output when timer turns ON. When timer turns on, the 24V flows to Relay. This action will cause electro-magnet to pull two points together, and that will turn on the pump.
Same with the sensor terminals. Do not connect power to rain sensor terminals. The rain sensor plugs into outlet, and produces it's own 24V ac output. So when rain sensor activates, this cuts power to timer, and then timer will automatically bypass the watering schedule until rain sensor again resumes power output to timer.
Gene

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1 Answer

What does COM. mean


Copy following links to identify timer manual:
http://waterheatertimer.org/Woods-timers-and-manuals.html#sprinkler
http://waterheatertimer.org/images/orbit-connections.jpg
Do not connect voltage to COM and Pump terminals... these terminals have 24Volt AC output when timer turns ON. When timer turns on, then 24V flows to Relay. This action causes electro-magnet to turn on the pump.
Also do not connect power to rain sensor terminals. The rain sensor plugs into outlet, and produces 24V ac output. When rain sensor activates, then timer will automatically bypass the watering schedule until rain sensor resumes power output to timer.
Gene

Jul 25, 2013 | Hardware & Accessories

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Circuitry from fuse box (220v) to timer and to sprinkler pump 220v


Copy following link:
http://waterheatertimer.org/How-to-wire-Intermatic-sprinkler-timers.html
240Volt requires 2 hot wires, but not additional neutral wire. Just cap the neutral.
http://waterheatertimer.org/images/Inside-Main-Breaker-Box-12.jpg
http://waterheatertimer.org/See-inside-main-breaker-box.html
The rain sensor should have it's own power source (for example plug into outlet, or use 1 Hot and 1 Neutral to supply power to rain sensor), and then wires from rain sensor connect to two rain-sensor terminals located on timer.
Do not connect power directly the the rain sensor terminals.
Add a comment for followup.

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Rainbird 4TM says NO PWR


Depends if it is a indoor or outdoor timer. If it is indoor you can easily find a 24V transformer at the local hardware store. If it is a indoor timer the transformer is usually not worth trying to purchase as it will be a manufacturer item usually costing almost as much as a new timer. Replace the timer.

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1 Answer

Can I connect a rain guage to a intermatic T8805P101C sprinkler clock?


1) Not directly to timer, because the T8805P101C 125Volt sprinkler/irrigation timer does not have additional wiring terminals for rain sensor.

2) Buy R8815P101 125Volt timer has additional terminals for sensor.

3) If you are good at wiring projects: Then you can wire rain sensor to 24Volt 8-pin relay, and have relay open and close power to pump or sprinkler head.
http://www.grainger.com/Grainger/DAYTON-Relay-1EGY5?Pid=search
http://waterheatertimer.org/images/Connect-relay-to-timer.jpg

4) Open following link for sprinkler timer resources:
http://waterheatertimer.org/Intermatic-trippers-and-parts.html#sprinkler

Add a comment for more help

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And take advantage of fixya expert assistance live.
For a price, expert works with you while you work on timer or any do-it-yourself project.
Fixya is always less expensive than a service call.

Sep 16, 2011 | Intermatic & Indoor/Outdoor Rain Tight...

1 Answer

How to wire hunter rain clik rain sensor to r8816p101c


1) There are different rain clik model numbers shown in manual
Open 24 volt Rain clik manual:
http://www.hunterindustries.com/resources/pdfs/instructions/domestic/lit358w.pdf
http://waterheatertimer.org/pdf/Hunter-rain-clik-instruction-manual.pdf

2) The rain sensor has two wires.
And two additional wires are needed to run from rain sensor to sprinkler timer. For example, buy thermostat wire from local hardware store if wire is not supplied.

3) The rain sensor has a terminal block where wires are connected. .
Open manual above to identify markings on your terminal block.
For example Figure 1 shows SRC model, and with this model number, the rain sensor wires connect to terminals RS and C, and then two wires going to timer connect to terminals RS and and 1.

4) R8816P101C is 208-240Volt 24-hour irrigation timer.
Timer has two separate terminals for attaching rain sensor.

5) Timer power connections have 4 terminals. Do not connect rain sensor to power terminals.
Connect wires from sensor to the two sensor terminals.

6) Timer slide-switch must be set to ON position for rain sensor operation.
Sensor sends continuous 24Volts to irrigation timer.
When it rains, the rain sensor stops sending 24Volts to timer. Timer responds by not turning on power to irrigation pump.
To by-pass rain sensor, move timer slide-switch to off position.

7) Open following link for Intermatic replacement parts:
http://waterheatertimer.org/Intermatic-trippers-and-parts.html#sprinkler

8) Take a moment and rate answer:
And take advantage of fixya expert assistance live.
For a price, expert works with you while you work on timer or any do-it-yourself project.
Fixya is always less expensive than a service call.

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1 Answer

How do you wire a Toro Rain Sensor 53769 to Intermatic Timer T8845PV


The rain sensor only connects to Intermatic sprinkler timer IF the timer has the rain sensor terminals.
Not all Intermatic sprinkler timers have that connection.
For example R8815P101C and R8816P101C have rain sensor terminals

I think the rain sensor terminals are located to the right of main wiring terminal block.
There are two screw terminals.

The rain sensor plugs into a power source, and then sensor wires connect to the timer.
Apply no voltage to the sprinkler timer terminals.

http://waterheatertimer.org/Intermatic-trippers-and-parts.html#sprinkler

May 01, 2011 | Intermatic & Indoor/Outdoor Rain Tight...

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