Waterheatertimer.org
is a self-help website
Figure volts amps watts for water heater 9 Ways to save with a water heater How to wire water heater thermostats Compare 16 ways to control water heater
How to install point of use water heater Point of use water heater
               Emergency steps: how to turn off water heater
                               Leaking water heater
                               Flooded water heater
How to install gas water heater  
Type 1 and type 2 surge protection surge protection
2016
Search waterheatertimer.org / all results
Search using Find button  

 Tweet button  

Stacking or short-cycling

Applies to tank-type gas and electric water heaters
How to adjust water heater thermostat
Stacking
Larger image



Gas water heater ECO


Electric water heater ECO
There is a water heater condition called stacking.

Stacking is caused with repeated short draws of hot water.
Each time hot water is drawn out of faucet, cold water immediately enters bottom of water heater tank through the dip tube.
Dip tube is a plastic pipe connected to cold water inlet. Cold water enters at bottom of tank.
So cold water enters bottom of tank near gas water heater thermostat, or near lower thermostat on electric heater

How stacking occurs:
Let's say water heater if fully heated and burner or elements are turned off.
A short draw of hot water causes cold water to enter tank.
Another short draw. And then another short draw, each draw happens near same time as other draws.
Water at top of tank is plenty hot, but bursts of cold water cause thermostat to turn on burner or element.
Water heater heats more hot water, and more hot water rises to top of tank.
Top of tank was hot before, but with added heating, the water becomes hotter than usual.

Larger image
Water at top of tank becomes overheated each time stacking occurs.
This can cause TP valve to release water, and cause ECO energy cut-off to trip on upper thermostat of electric water heater.

Stacking may not be the cause of your water heater problem.
However, remember if single-handled faucet is opened straight upward, then that will draw both hot and cold water out of water lines.
As soon as hot water runs out of faucet, cold water enters tank. This is ingredient for stacking, and is energy-wasteful.

Crossover can cause stacking.
Only when single-handled faucet is lifted with handle fully to the right, does faucet draw only cold water.
But some single-handled faucets have 'crossover' between hot and cold sides because of defect faucet cartridge.
When crossover is present, hot water draws each time any faucet in house is turned on.
To test for crossover: Turn OFF water to heater. Cold water pressure is still ON.  Next, turn on hot side of all faucets in house and wait 10 minutes and check for water flows. There should be no water flowing. If water flows, then that means one or more faucets has crossove problem. To test which faucet, turn off all faucets except hot side on one faucet. Put ear against each single-handled faucet in house and listen for flowing water. Also check mixing valve on water heater if one is installed. Defective check-valve can also cause crossover.
How to save hot water using mixing valve

Crossover can cause Tankless water heater not to turn ON: Read: No error code
Troubleshoot tanklesss
Read 9 ways to save with water heater
How-to-troubleshoot-electric-problems-with-water-heater
broken dip tube
Example show electric water heater: How electric water heater works
Gas water heater
Gas water heater dip tube: How to install gas water heater
Water heater dip tube
Water heater dip tubes
Typical gas valve
Typical LP and NG gas control thermostats
Larger image
Adjust water heater temperature
replace gas water heater
How to install and troubleshoot gas water heater
water heater thermostats
Adjust temperature on gas and electric water heaters
Leaking water heater
Troubleshoot leaking water heater
Additional links

Troubleshoot gas water heater

Low hot water pressure

Remove old element

Adjust water heater temperature

Electricity from pole to breaker box

See basic 120V and 240V water heater circuits

Compare all water heater timers
Do it yourself
Do it yourself water heater

How to twist wire

How to wire off-peak water heater
Cutler Hammer C25BUB230A
Contactors
Recirculation system
Hot water circulation system
Solar water heater
9+ ways to save with water heater

Motorized shut off valve

Anode rods

Clean sediment from tank
Intermatic parts
Intermatic trippers and parts

Troubleshoot electric water heater
Troubleshoot Rheem tankless

Troubleshoot Bosch tankless
Gas and electric water heaters Industrial electric at Amazon

Industrial supplies at Amazon

Industrial and scientific Amazon
Intermatic control centers Intermatic control centers:
+ manuals and parts


Including Z-wave
box timers Compare box timers

Control with Z-wave
programmable timer Compare programmable timers

Control water heater with programmable wall timer
Countdown timers Compare countdown timers

Control water heater with countdown timer
Compare power packs

E-mail: geno03245w@gmail.com
My response might end up in spam folder, check email folders
Site map
Follow newest idea on twitter
Type 1 and type 2 surge protection surge protection Privacy policy
Search