The electronic EH40 time switch provides control for electric water heaters with to -the-minute accuracy in programming and time keeping. These time switches. Buy Intermatic EH40 electronic water heater timer. Automatic control for water heaters. Low prices and fast shipping on timers and more at !. Free Shipping. Buy Intermatic EH40 Volt Electronic Water Heater Timer at

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Sign-up for email alerts for products and software updates, new product releases and information about upcoming events. WH21 25 amp, volt.

But it is a very time consuming process to set up the times to operate the water ibtermatic. People who bought this also bought. Browse documentation, including instructions sheets and manuals, for discontinued or obsolete products. Relay switch terminals and are ‘dry’ and receive no voltage when power is connected to terminals 1 and Recirculation system Tankless recirculation.

I purchase this unit to run my well pump at designated times it does a very good job running my well 6 times per night to keep my gallon tank full use this unit and eh4 float switch and you can keep your tanks full without draining your well for slow Wells! Tighten screws very tight against copper wire. Ratings and Reviews Write a review.

Jumper hot wire from terminal 2 to terminal 3. Fits in the old style box I didn’t have to change the old timer box, just change them out.


Discontinued Product Interatic Browse documentation, including instructions sheets and manuals, for discontinued or obsolete products. Terminals 1 and 2 send power to V clock.

Clean wire ends with sandpaper if discolored Tighten screws very tight. Maximum 2 solid copper wires under screw plate Max 2 wires under screw plate Each wire must be same gauge Attach multiple wires with wire connector, and run jumper to screw terminal Resources: Type 3R Rated For protecting time switch from rain, sleet, snow and ice Drawn steel with gray dh40 beige powder coat paint 0.

How to wire EH40 water heater timer/ EH10/ WH40/ WH21

I didn’t have to change the old timer box, just change them out. Generally no, because both wires are Hot. Other than that not a bad timer should pay for itself within 6 months. This is a nice timer had an error on wiring it up with the jumpers supplied as they were not long enough thus they would not work as described in the instructions? Skip to main content. See details for additional description.

Does volt circuit have a Neutral? How to repair EH40 timer. Wire and intematic size charts. No insulation under screw plate Use inhermatic solid copper wire Do not put insulation under screw terminal Take photo of wires before starting. Download our Corporate Brochure. See all 3 brand new listings. Great item I have installed the mechanic type for some friends and they like it but they complain about 5he programing capability. Different arrangement of wires Terminals and are simple on-off relay switches that activate when timer turns on-off.


Type 1 and type 2 surge protection. The directions were poor. Attach stranded wire and solid wire with wire connector, and run solid copper jumper wire to screw terminal. Install and troubleshoot garbage disposal. Trending Price New. Choose correct wire and breaker Wire connectors How to twist wire Wire connectors Basic house wiring. Surge Protective Device with Consumable Modules. The programing capability fh40 all my needs. Bought it over ebay and using it for my 55 Gallons water heater. Show More Show Less.

Always connect ground wires together on the green intermaticc screw. Yes Amps – per pole: Packaging should be the same as what is found in a retail store, iintermatic the item is handmade or was packaged by the manufacturer in non-retail packaging, such as an unprinted box or plastic bag.

EH40 controls volt load Use to power power-indicator light, pump, or any volt load with same schedule as water heater Buy: You may also like.

Intermatic EH40 Electronic Water Heater Timer

See wiring for main breaker box Basic water heater circuit. Intermatic Videos Browse our selection of videos. Neutral wires connect to terminal 1 Ground wires are kept away from other wiring. Nice timer for your water heater just make sure you set the time before installing it as the readout is hard to read.