Whirlpool Water Heater 318686-000 사용자 설명서

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Water supply pressure should be around 50 to 60 psi 
and should not exceed 80 psi. If this occurs, a pressure 

reducing valve should be installed in the cold water inlet 

line. This should be placed on the supply to the entire 

house in order to maintain equal hot and cold water 

pressures.

: Heat cannot be applied to the water fi ttings 

on the heater as they may contain nonmetallic parts. 

If solder connections are used, solder the pipe to the 

adapter before attaching the adapter to the hot and cold 

water fi ttings.

: Always use a good grade of joint com-

pound and be certain that all fi ttings are drawn up tight.
1.  

Install the water piping and fitting as shown in  

 

 Figure 3. Connect the cold water supply (3/4” NPT)

 

 to the fitting marked “Cold”. Connect the hot water 

 

 supply (3/4” NPT) to the fitting marked “Hot”.

: Some models may contain energy saving

heat traps to prevent the circulation of hot water within 

the pipes. Do not remove these inserts.
2.  

The Installation of dielectric unions in both the hot  

 

 and cold water supply lines is recommended for  

 

 ease of removing the water heater for service or  

 

 replacement.

3.  

Some local codes may require, and the manufac- 

 

 turer of this water heater recommends,

 

 installing a mixing valve in the domestic hot water

 

 line as shown in Figure 4. These valves reduce the

 

 point-of-use temperature of the hot water by mixing

 

 cold and hot water and are readily available.   

 

 Contact a licensed plumber or the local plumbing 

 

 authority.

4.  

If installing the water heater in a closed water

 

 system, install a relief valve or expansion tank in

 

 the cold water line as specified under “Closed

 

 System/Thermal Expansion”.

5.  

Install a shut-off valve in the cold water inlet line. It

 

 should be located close to the water heater and be

 

 easily accessible. Know the location of this valve

 

 and how to shut off the water to the heater.

6.  

Install a discharge line from the temperature and  

 

 pressure relief valve in the opening marked “T & P

 

 RELIEF VALVE”. Install as specified under

 

 “Temperature and Pressure Relief Valve”.

7.  

After piping has been properly connected to the

 

 water heater, open the nearest hot water faucet.  

 

 Then open the cold water shut off valve and

 

 allow the tank to completely fill with water. To purge  

 

 the lines of any excess air and sediment, keep the

 

 hot water faucet open for 3 minutes after a constant

 

 flow of water is obtained. Close the faucet and

 

 check all connections for leaks.

°F/°C

F

Unmixed
Hot Water

Mixed Water
To Fixtures

Cold Water

Inlet

Hot

Water
Outlet

Mixing Valve

(Set To 120  F)

0

Piping, fi ttings, and valves should be installed according

to the installation drawing (Figure 3). If the indoor in-

stallation area is subject to freezing temperatures, the 

water piping must be protected by insulation.