Figure 37.
When checking the
If after manually operating the valve, it fails to completely reset and continues to release water, immediately close the cold water inlet to the water heater, follow the draining instructions, and replace the
If the
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 Figure 1, Features And Components in this manual for the location of the water heater components described below.
Burn harzard.
Hot water discharge.
Keep hands clear of drain valve discharge.
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 the drain valve and terminate it to an adequate drain.
5.Ensure the drain hose is secured before and during the entire flushing procedure. Flushing is performed with system water pressure applied to the water heater.
6.Open the water heater drain valve to flush the storage tank.
7.Flush the water heater storage tank to remove sediment and allow the water to flow until it runs clean.
8.Close the water heater drain valve when flushing is completed.
9.Remove the drain hose.
10.Fill the water heater - see Filling The Water Heater in this manual.
11.Turn on the electrical supply to place the water heater back in operation.
12.Allow the water heater to complete several heating cycles to ensure it is operating properly.
Service
If a condition persists or you are uncertain about the operation of the water heater contact a qualified service agency.
Use this guide to check a “Leaking” water heater. Many suspected “Leakers” are not leaking tanks. Often the source of the water can be found and corrected.
If you are not thoroughly familiar with gas codes, your water heater, and safety practices, contact your gas supplier or qualified installer to check the water heater.
Read this manual first. Then before checking the water heater make sure the gas supply has been turned “OFF”, and never turn the gas “ON” before the tank is completely full of water.
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