Draining And Flushing; To Drain The Water Heater Storage Tank; To Flush The Water Heater Storage Tank - State Water Heaters SBL 100 76NE Series 100 Instruction Manual

6. If relief valve appears to be limed-up, place it in a clean glass or
plastic container adequate in size so that you can pour enough
UN•LIME® into the container to cover the valve and allow space
for foaming. When foaming stops, run fresh cool water into the
container and rinse the relief valve for a few minutes.
7. If heater does not drain completely after a reasonable length
of time, turn off the main water supply valve to stop water from
entering the tank due to a by-pass problem or defective cold
water inlet valve. Also, check for clogged drain valve opening.
Heater must be completely drained before introducing UN•LIME.
8. Remove the cleanout cover and place a clean plastic bucket next
to the cleanout opening.
Partially open the cold water inlet valve to allow time to accomplish
the following and then close the valve.
While the water is being run through the tank, insert a stiff
wire, copper tube flattened at one end or an opened wire coat
hanger through the cleanout opening and scrape out any loose
deposits of scale or sediment. This is an economical way to avoid
unnecessary usage of the deliming solution.
Repeat the opening and closing of the cold water inlet valve as
necessary but be sure the heater is completely drained when
ready to introduce the UN•LIME.
Upon completion, reinstall the cleanout cover and use a new
cleanout cover gasket (part number 9004099215).
Remove the drain valve.
9. Install the long plastic male adapter insert fitting into the drain
valve opening of heater after applying Teflon tape or paste to
threads. Tighten firmly by hand and use wrench or adjustable
pliers to check for secure connection. Do not over tighten to avoid
damage to threads and fittings.
Prepare the Up-N-Down Transfer Kit
The next step is the preparation on the Up-N-Down Transfer Kit, if
you have not already done so:
1. With the 5 gallon Up-N-Down container in the vertical position,
unscrew plastic vent cap in the handle and pierce the plastic
membrane over the vent boss under cap to allow container to vent.
note: If your container does not have the vent cap and vent boss,
drill a 3/16" hole in the handle. When you have finished deliming
you will be able to plug this drilled vent with the stainless steel
screw that is supplied with the kit.
2. Remove the container's cap and cut the plastic membrane
located in the 3/4" IPT opening in the cap. Take care to not
damage the threads.
3. Find the 3/4" male adapter, apply teflon tape to the threaded end
and screw it into the 3/4" IPT opening in the cap.
4. Put cap with male adapter back on the container and slide
3/4" hose over end of male adapter and fasten in place using
hose clamp provided.
Delime using Flo-Jug Method
5. Slide the hose clamp over end of hose and slide hose over the
male adapter in the water heater drain opening and secure in
place using hose clamp.
6. Lift container to the "Pour" Position, see Figure 29, being careful
to keep the vent in the handle above the liquid level and pour the
UN•LIME into the heater.
7. Lower container, you may have to place container on its empty
carton to prevent the UN•LIME from flowing back into container.
8. Let UN•LIME remain in the heater for 5 minutes and then lower
the container to the "Drain" Position, see Figure 29.
9. Deliming activity is indicated by foaming on the surface of the
UN•LIME. If there is deliming activity, repeat steps 6 thru 8.
Normally, lime removal will be completed within one hour. Severe
build-up of lime may take longer than an hour to complete descaling.
Note: To check UN•LIME for continued use, place some scale or
white chalk in a glass with a small amount of UN•LIME. If the material
is vigorously dissolved by the UN•LIME, it can be reused; if not, the
UN•LIME should be replaced.

draInInG and flushInG

It is recommended that the water heater storage tank be drained
and flushed every 6 months to reduce sediment buildup. The
water heater should be drained if being shut down during freezing
temperatures. See Features And Components in this manual for
the location of the water heater components described below.

to draIn the water heater storaGe tanK:

1. Turn off the electrical supply to the water heater.
2. Turn off the gas supply at the Main Gas Shutoff Valve if the
water heater is going to be shut down for an extended period.
3. Ensure the cold water inlet valve is open.
4. Open a nearby hot water faucet and let the water run until the
water is no longer hot.
5. Close the cold water inlet valve to the water heater.
6. Connect a hose to the water heater drain valve and terminate
it to an adequate drain.
7. Open the water heater drain valve and allow all the water to
drain from the storage tank.
8. close the water heater drain valve when all water in the
storage tank has drained.
9. Close the hot water faucet opened in Step 4.
10. If the water heater is going to be shut down for an extended
period, the drain valve should be left open.

to flush the water heater storaGe tanK:

1. Turn off the electrical supply to the water heater.
2. Ensure the cold water inlet valve is open.
3. Open a nearby hot water faucet and let the water run until the
water is no longer hot. Then close the hot water faucet.
4. Connect a hose to drain valve and terminate it to an adequate drain.
24
fIGure 23.
Burn harzard.
Hot water discharge.
Keep hands clear of drain
valve discharge.