Question about Intermatic EI210 Electronic Auto Shutoff Timers

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Time Saving Question

Are water heater's timers beneficial?

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A timer on a conventional electric water heater can save 5-12% on your hot water bill. The water in the tank remains hot for up to eight hours or more while the water heater is not in operation, depending on the insulation and age of the unit. However, the hot water is still available for household use until it is completely consumed. Thus, if a household has a fifty-gallon water heater, it will have fifty-gallons of hot water available while the water heater is not in operation. Most households won't notice the interruption unless they have high hot water use patterns in relation to tank size. It is best to set the timer during hours when hot water use is lowest, typically during the work day or at night. Adjusting the timer may be necessary if households experience a shortage of hot water.

Posted on Aug 27, 2008

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I have a Paragon water heater timer model # 4004-20 can't activate please help!


As a plumber, I would say you are better of getting rid of the timer. You aren't saving yourself much money at all using it, we're talking $50 a year at most. They usually wind up causing more trouble than they are worth.

Apr 28, 2015 | Paragon Hardware & Accessories

1 Answer

Can i use a thermal blanket for my Rheem Glasfury 82v40-2 hot water heater


Modern water heaters are well insulated to the point that adding additional insulation is not beneficial. Some units may also suffer from a blanket blocking air vents or causing condensation build up.

Dec 31, 2012 | Rheem 82V40-2 Fury Electric Residential...

1 Answer

Do I need a substrate heater?


No. They are not worth the money. From what I have heard they do more damage than good so I recommend saving your money and spending it elsewhere on something more beneficial for your aquarium.

Aug 28, 2012 | Aquaculture Fish

1 Answer

I have a Paragon model 4004-20 Water Heater Timer and I moved the TIME arrow. Now the water heater is not working at all. I am thinking of just restoring full time power to the water heater. I did not...


You are not supposed to move the time arrow.
http://waterheatertimer.org/Paragon-timers-and-manuals.html

4000 series time arrow is pointed at 8:00.
geno_3245_97.jpg
To set current time, lift and rotate dial clockwise until current time lines up with pointer.
Put X2772 trippers on dial at times you want water heater to turn on.
Minimum on-off with Paragon 4000 is 1-1/2 hours because trippers are so fat.
You can replace 4000 timer with electronic timer and control exact on-off down to the minute:
http://waterheatertimer.org/Boxtype.html

Electric water heater heats about 21 gallons of water per hour.
Shower uses 6-9 gallons hot water.
Bath uses 10-12 gallons hot water.
Average water heater that is not connected to timer, runs about 3 hours a day. You can make timer pay off by keeping time schedule lower than 3 hours.

Following link shows how to figure cost for electric water heater:
http://waterheatertimer.org/Figure-Volts-Amps-Watts-for-water-heater.html

Following link shows several ways to save with water heater, plus general information to save money long-term:
http://waterheatertimer.org/9-ways-to-save-with-water-heater.html

Nov 21, 2010 | Heating & Cooling

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Can i use the timer for a water headter to trun on and off


Paragon 8145-20 is a 240V defrost timer
It is probably not best choice for water heater timer
Timer initiates defrost cycles each 4 hours.

A water heater timer should have more scheduling options.
-For example estimates show average run-time for water heater is 3 hours per day, depending on incoming water temperature, thermostat setting, and number of gallons used.
-To save money using water heater timer, you have to schedule times carefully so water heater runs less than 3 hours per day.
-Now your average electric water heater heats about 20 gallons per hour.
-Average shower uses 4-9 gallons hot water, so water heater needs to run 15-30 minutes (15 summer, 30 winter)
-Average bath uses 12-15 gallons hot water so water heater runs 45-60 minutes
-But lets say you run water heater for 1 hour and make 20 gallons of hot water. Then you take a shower, expecting hot water to remain in tank.
-Here's the problem ... cold water entered the tank to replace the shower water ... and the new cold water is cooling the rest of the tank.
-So a timer means scheduling hot water to match shower and bath events. For example taking shower and bath in immediate succession.
-Or set the timer for each individual hot water event ... for example set timer for 1/2 hour for shower, and later timer turns on 1 hour for bath, or 1-1/2 hr for 2 baths, etc
-> The flexible programming described above is not a characteristic of defrost timers.
I suggest Intermatic WH-31 240V or Intermatic T-104 240V or GE 15207. These are mechanical repeat-24 hour timers with manual override where each day has same schedule.
Digital programmable timers like Intermatic EH40 offer 7-day, 40 event programming. Weekends and weekdays can be different.
To see several box-type timers:
http://waterheatertimer.org/Boxtype.html

Sep 29, 2010 | Paragon 8145-20 Defrost Timer

1 Answer

I have a problem with my wh21 intermatic hot water heater timer.When it trips off the indicating light is still on dimly and there show low 92 volt on load side.


There is a short. The timer mechanism is mechanical, so the problem is not failed electronics.
The WH21 is for 240 volt circuits, so it has 2 hot wires and 1 ground from the breaker box. Only one hot line to the water heater is turned off, but both lines are attached to screw terminals at timer.
To see if the problem is a shorted element or shorted wire in water heater, disconnect hot leads to water heater one at a time, and then test. Then disconnect ground wire from water heater and test again. Then disconnect all wires to water heater, and test again.
If the problem is in the water heater, search for troubleshooting steps on internet. Focus on testing elements.
If the problem is not in the water heater, then a frayed wire on back of timer is next checkpoint. The timer motor is the final suspect. You can detach the timer motor from the housing, and test for stray voltage. Intermatic WH21 is inexpensive to replace.

Aug 23, 2010 | Electric Intermatic Inc Wh21 Water Heater...

1 Answer

Changing out the hot water heater timerswitch


Nema 1 means indoor-only enclosure or box.
For example Nema 3R is raintight for indoor-outdoor box, which is typical for outdoor swimming pool timers.

If you have water heater timer, open following page for common timers with images, manuals and wiring for each.
http://waterheatertimer.org/Boxtype.html

Dec 27, 2009 | Intermatic WH40 - Water Heater Time Switch...

1 Answer

Clock on Intermatic WH40 Timer Switch does not rotate


Timers are a waste of time . I would disconnect it and get rid of it. Water heaters nowadays are so energy efficient and the thermostats take care of when it heats and shuts off. Your timer might save you pennies a year!

Feb 27, 2009 | Intermatic WH40 - Water Heater Time Switch...

4 Answers

How to Save Money?


You can try methods such as adding extra insulation to the tank and lowering the water heater temperature to 120 degrees.

Aug 27, 2008 | Intermatic HEATER DELAY SHUT OFF SWITCH...

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