Installation & Operating Manual

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 of the

Standard for Relief Valves and Automatic Gas Shutoff Devices for Hot Water

Supply Systems, ANS Z21.22 or the Standard CAN1-4.4. Temperature and

Pressure and the Standard CAN1-4.4, Temperature, Pressure, Temperature

and Pressure Relief Valves and Vacuum Relief Valves. The combination

temperature and pressure relief valve must 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 must also have an

hourly rated temperature steam BTU discharge capacity not less than the

hourly 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 (15.2 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 combination 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 clearance 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.