Bradford-White Corp 238-44422-00G Manual De Usuario

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7
Water Connections continued- 
 
 
WARNING 
For protection against excessive temperatures and pressure, install 
temperature and pressure protective equipment required by local codes, 
but not less than a combination temperature and pressure relief valve 
certified by a nationally recognized testing laboratory that maintains 
periodic inspection of production of listed equipment or materials, as 
meeting the Requirements for Relief Valves and Automatic Gas Shutoff 
Devices for Hot Water Supply Systems, ANSI Z21.22
, and the Standard 
CAN1-4.4 Temperature, Pressure, Temperature and Pressure Relief 
Valves and Vacuum Relief Valves
.  The combination temperature and 
pressure relief valve shall be marked with a maximum set pressure, not to 
exceed the maximum working pressure of the water heater.  The 
combination temperature and pressure relief valve shall also have an 
hourly rated temperature steam BTU discharge capacity not less than the 
hourly input rating of the water heater. 
 
Install the combination temperature and pressure relief valve into the 
opening provided and marked for this purpose on the water heater 
 
Note:  Some models may already be equipped or supplied with a 
combination temperature and pressure relief valve.  Verify that the 
combination temperature and pressure relief valve complies with local 
codes.  If the combination temperature and pressure relief valve does not 
comply with local codes, replace it with one that does.  Follow the 
installation instructions above on this page. 
 
Install a discharge line so that water discharged from the combination 
temperature and pressure relief valve will exit within six (6) inches (15.3 
cm) above, or any distance below the structural floor and cannot contact 
any live electrical part.  The discharge line is to be installed to allow for 
complete drainage of both the temperature and pressure relief valve and 
the discharge line.  The discharge opening must not be subjected to 
blockage or freezing.  DO NOT thread, plug or cap the discharge line.  It is 
recommended that a minimum of four (4) inches (10.2 cm) be provided on 
the side of the water heater for servicing and maintenance of the 
combination temperature and pressure relief valve. 
 
Do not place a valve between the combination temperature and pressure 
relief valve and the tank.