Whirlpool 4 User Manual

15

Manually operate the temperature and pressure relief

valve at least once a year to make sure it is working

properly. To prevent water 

damage, the valve must  

be properly connected to   

a discharge line which 

terminates at an adequate 

drain.
Standing clear of the outlet 

(discharged water may be 

hot), slowly lift and release 

the lever handle on the

temperature and pressure 

relief valve to allow the valve to operate freely and return 

to its closed position. If the valve fails to completely reset 

and continues to release water, immediately disconnect 

the electrical power, close the cold water inlet valve and 

call a qualifi ed person.

It is recommended that the tank be drained and fl ushed

every 6 months to remove sediment which may buildup

during operation. The water heater should be drained if 

being shut down during freezing temperatures. To drain 

the tank, perform the following steps:
1.   T urn off the power to water heater.
2.  

Open a nearby hot water faucet until the water is no  

 

 longer hot.

3.  

Close the cold water inlet valve.

4.    Connect a hose to the drain valve and terminate it

 

 to an adequate drain or external to the building.

5.    Open the water heater drain valve and allow all the

 

 water to drain from the tank. Flush the tank with

 

 water as needed to remove sediment.

6.    Close the drain valve and refi ll the tank (open the cold  

 

 water inlet valve), and restart the heater as directed  

 

 in this manual. CAUTION: Do not turn on power to  

 

 the water heater unless it is completely  fi lled with 

 

 water. To ensure that the tank is full, open a hot water  

 f 

aucet and allow water to run until the air is purged  

 

 and the water fl ows uninterrupted from the  

 

 

 faucet.

7.    Turn the electrical power on to turn the water heater  

       on.  NOTE: the water heater will conduct a system  

 

 diagnostic prior to operation.

If the water heater is going to be shut down for an extend-

ed period, the drain valve should be left open.

1.  

Turn off the power to the water heater.

2.    Shut off the water supply and open a nearby hot

 

 water faucet to depressurize the water tank.

3.    Drain approximately 5 gallons of water from the

 

 tank. (Refer to “Draining and Flushing” for proper

  

 procedures.) Close drain valve.

4.    Remove the old anode rod (See Figure 11).
5.    Use Tefl on

®

 tape or approved pipe sealant on

 

 threads and install new anode rod.

6.    Turn on the water supply and open a nearby hot     

 

 water faucet to purge all air from the water system.

7.    Restart the heater as directed in this manual. Turn the  

 

 electrical power on to turn the water heater on. 

 

 NOTE: the water heater will conduct a system diag- 

 

 nostic prior to operation. See the “Repair Parts Illus- 

 

 tration” for anode rod location on page 22.

Tefl on

®

 

is a registered trademark of E.I. Du Pont De Nemours and Company.

If you lack the necessary skills required to properly service this water heater or you have diffi culty following the

instructions, you should not proceed but have a qualifi ed person perform the maintenance of this water heater.

• Temperature-pressure relief 

valve must comply with ANSI 
Z21.22-CSA 4.4 and ASME 
code.

•  Properly sized temperature-

pressure relief valve must be 
installed in opening provided.

•  Can result in overheating 

and excessive tank pressure.

•  Can cause serious injury or 

death.