Question about Amtrol ST-12-C THERM-X-TROL ASME Expansion Tank, 5 Gallon

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Air in hot water lines only after installing thermal expansion tank. tank is mounted below water line .

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Does you system have an auto air vent - has a cap like tire valve. cap should be left loose.

Posted on Mar 14, 2009

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Sunbeam hot/cold water dispenser is leaking from looks like copper tubing that goes to tank. Model # ylr-5-87h3 what could my problem be


Broken solder connection.
Continual expansion and contraction of metal due to hot and cold extremes will cause metal fatigue. The most vulnerable place is at the join. Other places can fail, but usually the solder join will fail first.
Buy another one and support economy.
Make sure next unit is connected to cold water line, and not hot water line. If hot water dispenser is connected to Hot line, then it will cause water heater to run each time water is drawn through dispenser because cold water immediately enters tank.
http://waterheatertimer.org/Water-heater-dip-tube.html
http://waterheatertimer.org/How-to-install-under-counter-water-heater.html#h-c
http://waterheatertimer.org/9-ways-to-save-with-water-heater.html#pot
You might also consider installing small tank under counter. Tanks are less glamorous than hot water dispensers but tanks are more reliable long term than instantaneous water heaters.

May 28, 2013 | Water Heaters

1 Answer

Leaking hot water heater


If it is older than 15 - 20 years and leaking on the floor under the tank, purchase and install a new appliance, If the T&P valve is leaking, change the valve. If it still leaks, replace the expansion tank which should on the supply water line. Try not to install an expansion tank "on its side". BEFORE YOU DO ANYTHING, make certain your incoming water pressure does not exceed 65 -70 psi. This could be the real problem. If so, install a new water pressure regulator. It is usually located inside the basement wall. In a Garden Home, it may be outside at the curb in the ground by the water meter. It may be in the ground buried near the entry through the foundation. It may be near the water heater.

Feb 02, 2013 | Water Heaters

1 Answer

I have a GE Profile Water Heater Model #SE40M12AA01.


I recommend safety changes to prevent ruptured water heater and assorted leaks.
135 degree hot water.
Maybe replace TP valve if it is dripping.
Drip pan under water heater with 3/4" drain line to outside.
Expansion tank on incoming cold water line to absorb pressure build-up, and prolong life of tank and plumbing.

Here's why:

1) Yes you can have scalding hot water.

2) I recommend 135 degrees since that will burn the evil right out of ya. And generally kill clothes washing bacteria.
http://waterheatertimer.org/How-to-adjust-water-heater-temperature.html

3) 150 is dangerous and can seriously burn skin in 1.5 seconds. Not safe around children and elderly.

4) Temperature settings on electric water heater are approximate, since thermostats are calibrated approximately, and read temperature through tank wall.

5) Also if you want to increase amount of hot water for high-consumption household, then setting tank temperature upward is one solution since more cold water is mixed with hot, so amount of hot inside tank goes further.

6) High temperature can cause TP valve to release water.
TP valve is pressure-temperature safety valve. Do NOT cap off.
Rating should be 125 psi and 180 degrees ... but all things water heater are approximate, and TP valves need replacement now and then.
It is not recommended by water heater manufactures to use 150 psi TP valve when water heater came with 125 psi. Rating shows in small print on end of TP. New TP valves sold at local hardware. Let tank cool before installing new one.

7) Higher temperature and high pressure can rupture tank.
Pressure over 80 psi shortens life of water heaters and plumbing fixtures. Put BTG100 pressure gauge on water heater drain valve to check pressure.

8) You need a drip pan with 3/4" drain line to outdoors, or to drain vent line, to prevent flood caused by ruptured water heater.
Turn water heater off when going on vacation.
Inspect water heater each 6 months.
Drip pan available at local home center or hardware:
http://waterheatertimer.org/9-ways-to-save-with-water-heater.html#drip

9) Heated water expands and puts pressure on tank and pipes.
Water does not compress... so when water gets hotter it expands against tank wall and against pipes.
Especially in closed system (check valve present) when system is without expansion tank.
Expansion tank is installed on incoming cold water line.
http://waterheatertimer.org/9-ways-to-save-with-water-heater.html#expansion

Oct 31, 2012 | Water Heaters

1 Answer

How do i install a pressure tank to my water heater?


Do you mean expansion tank? To relieve pressure?
Expansion tank goes on cold water line before cold enters tank.
See image:
http://waterheatertimer.org/images/water-heater-expansion-tank.jpg

Expansion tanks are installed when TP valve is constantly drizzling hot water due to very hot temperature settings. Or when water pressure is high, etc
It's also smart to install expansion tank so plumbing lasts longer, and older tank is less likely to rupture and cause damage. Inspect tank for leaks each 6 months.
Some regions require expansion tank by local code.
Water heater can be damaged when pressure exceeds 80psi. : Test pressure using pressure gauge at water heater drain valve.

Other resources:
http://waterheatertimer.org/9-ways-to-save-with-water-heater.html
http://waterheatertimer.org/How-to-adjust-temperature-on-water-heater.html
http://waterheatertimer.org/images/BTG-100-Pressure-gauge.jpg

Sep 27, 2011 | General Electric Water Heaters

1 Answer

Black flakes come out when the hot water side of the faucet is used


These black flakes must be in your line or your expansion tank. Remove the filter from your faucet, temporarily, and let just the hot water side run until the water comes out clean. You must flush these black flakes out.

Jan 31, 2011 | Amtrol ST-5-C THERM-X-TROL ASME Expansion...

1 Answer

It is leaking out of the top. not out of the hot or cold valves but out of a nut by the cold side.


Your tank is rusted out and needs to be replaced.
Link below is a troubleshoot for leaking water heater.
http://waterheatertimer.org/Leaking-water-heater.html

Protect yourself first:
If your tank is rusted, there is danger of rupture.
My friend welded his leaking tank, but he assumes the risk.
Ruptured tank can cause massive damage and water runs until it is shut off.

Hot water tank is under pressure because hot water expands and pushes against tank wall.
Turn off water to tank.
Turn off power supply:
Electric: turn off circuit breaker.
Gas: rotate knob to pilot so pilot stays lit but burner will not fire. To turn back on, rotate knob to ON.
Open hot side bathtub valve and relieve pressure on tank.

You can limp by with rusted tank by turning water heater on when hot water is needed.
Shower uses 5-9 gallons hot water
Bath uses 12-15 gallon hot water
Ordinary gas heater makes 41 gallons hot water per hour
Ordinary electric heater makes 20 gallons hot water per hour.

I buy water heaters at Lowes, Home Depot, Ace.
Look for scratch and dent models.
Buy drip pan for water heater.
Wrap electric heater totally with insulation except TP valve.
Buy new flexible connectors for water lines.
Offer 15% less than marked price on tank, because the store makes money on additional items.

> Most people can install their own electric heater since you just connect water pipes and electric wire, and it's done. Read link below since there are tips that help you buy and install electric.
> Generally people are nervous about installing gas water heater, so step-by-step instructions are shown on link below. Remember gas line is under less pressure than water line, so if you can install a water pipe, you can install gas line to water heater with crescent wrench, and soapy water to check for leaks.
How to install gas water heater:
http://waterheatertimer.org/How-to-install-gas-water-heater.html

Add a comment for more free help.
Also take advantage of fixya phone service.
For a price, fixya expert speaks with you over phone while you work on water heater, or any do-it-yourself project.

Jan 13, 2011 | Water Heaters

1 Answer

I have installed a new water heater aruond two months ago. The problem is that the T&P valve keeps going off even with an expansion tank put on the water system. The water supplier has a built in check...


Expansion tank is supposed to stop over-expansion due to pressure.
The check valve will stop over-expansion from pushing pressure back into the supply line.
The real question is what is causing the pressure.
If your TP valve is bad that could cause problem.
If the thermostat is set very high, and there is frequent short-term use of hot water, that can cause heat to build up inside tank.
Solution:
Lift TP valve and let out pressure to see if there is something lodged in the valve.
Be careful of the scalding water.
Let the TP lever down slowly.
Next step would be replace TP valve.
Turn down thermostat to 120, or set to 130-5 if objective is to kill most bacteria.
Last. You might check that your expansion tank is correct for water heater.

Oct 31, 2010 | Rheem 81VP6S/430126 Water Heater

1 Answer

My temperture and pressure controlon side of water heater keeps letting off water even after being replaced.


i believe you may need an expansion tank. this would be installed anywhere on the cold water line between the water meter and the hot water tank. the tank would take up the excess pressure in the system

Jan 01, 2010 | RELIANCE ELECTRIC WATER HEATER

1 Answer

I have a propane hot water tank that in discharging the hot water out the relief valve (Champion energy saver series)


possible problems not knowing age of unit the
control valve could be sticking open allowing gas to continue to flow until high limit is reached and shuts down valve another possible problem with the newer style back flow preventer being install by water companys the rapid heating and expansion of the water over pressures the water system causing releif valve to pop open and reclose most water heater manufacters are recommending instalation of an expansion tank to allow the growth in volume of water somewhere to go is valve constantly leaking or only during heating cycle if you could supply additional information does unit only leak when heating
or is steam expelled when releif valve opens
t-stat not opening gas valve sticking partially open
bad high limit bad pressure releif valve no expansion tank to allow for thermal expansion if steam is present and unit is boiling water inside replacement of water heater for safety concerns,would be reccomended if only water and pops couple of times water temp not over 140 degrees after most hot water has been used out of tank and is reheating most of capacity probably lack of expansion tank as the releif valve is the final safety device on a water heater is of great concern
the temp control gas valve or high limit are supposed to shut unit done long before the safety limit of releif valve is reached

Dec 11, 2009 | Water Heaters

1 Answer

Hot Water Overflow


Do you have an expansion tank tank  in the line leading into water heater? If not what is happening is that the water is no longer allowed to go back into the city supply.  You said that you had turned it off while you left so the water heats up and has no place to go so the preasure/ temperature P/T valve  opens and lets out the excess water from the expanded supply (heater water) that has no where else to go. It used to be that the extra expanded water just backed up into the supply pipe and back into the main. That is no longer possible in most places by the  National Plumbing code.    The answer may be to install the expansion tank into the incoming line. You can see then now at  all hardware stores where water heaters are sold.

Jan 04, 2009 | Rheem 81VP6S/430126 Water Heater

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