HTP SuperStor Ultra Indirect Fired Water Heaters - Manual (Page 12)

12
LP-83 Rev. 3.24.14
Use both thread tape and pipe dope to install an NPT brass T&P relief valve for hot water storage tanks, as required by local codes, but
not less than valves certified as meeting the requirements for relief valves for hot water heaters (ANSI Z21.22 and CAN1-4.4) by a
nationally recognized lab that maintains periodic inspection of production listed equipment. Make sure the relief valve is sized to the
BTU/Hour capacity and storage capacity of the water heater. The T&P relief valve must be plumbed down so discharge can exit at least
6” above the structural floor. The relief line cannot be in contact with any live electrical parts. If the relief valve constantly weeps, install
an expansion tank, and see expansion tank
manufacturer’s instructions for suggestions.
Do not thread a cap or plug into the relief valve under any circumstances! Explosion and property damage, serious injury, or death may
result.
To avoid water damage or scalding due to relief valve operation:

Discharge line must be connected to relief valve outlet and run to a safe place of disposal. Terminate the discharge line in a
manner that will prevent possibility of severe burns or property damage should the relief valve discharge.

Discharge line must be as short as possible and the same size as the valve discharge connection throughout its entire length.
 Discharge line must pitch downward from the valve and terminate at least 6” above the floor drain, making discharge clearly
visible.

The discharge line shall terminate plain, not threaded, with a material serviceable for temperatures of 375
o
F or greater.

Do not pipe discharge to any location where freezing could occur.

No valve may be installed between the relief valve and heater or in the discharge line. Do not plug or place any obstruction in
the discharge line.

Test the operation of the relief valve after filling and pressurizing the system by lifting the lever. Make sure the valve
discharges freely. If the valve fails to operate correctly, immediately replace with a new properly rated relief valve.
 Test T&P valve at least once annually to ensure the waterway is clear. If valve does not operate, turn the heater “off” and call
a plumber immediately.

Take care whenever operating relief valve to avoid scalding injury or property damage.
FAILURE TO COMPLY WITH THE ABOVE GUIDELINES COULD RESULT IN FAILURE OF RELIEF VALVE OPERATION,
RESULTING IN POSSIBILITY OF SUBSTANTIAL PROPERTY DAMAGE, SEVERE PERSONAL INJURY, OR DEATH.
RE-INSPECTION OF T&P RELIEF VALVES: T&P valves should be inspected AT LEAST ONCE EVERY THREE YEARS, and
replaced, if necessary, by a licensed plumbing contractor or qualified service technician, to ensure that the product has not been
affected by corrosive water conditions and to ensure that the valve and discharge line have not been altered or tampered with illegally.
Certain naturally occurring conditions may corrode the valve and its components over time, rendering the valve inoperative. Such
conditions can only be detected if the valve and its components are physically removed and inspected. Do not attempt to conduct an
inspection on your own. Contact your plumbing contractor for a re-inspection to assure continued safety.
FAILURE TO RE-INSPECT THIS VALVE AS DIRECTED COULD RESULT IN UNSAFE TEMPERATURE AND/OR PRESSURE
BUILDUP WHICH CAN RESULT IN SEVERE PROPERTY DAMAGE, SERIOUS PERSONAL INJURY, OR DEATH.
E. SCALDING
An ASSE 1017 or ASSE 1070 temperature limiting or mixing valve is recommended in installations servicing disabled or elderly
persons, or children. Mixing valves do not eliminate the risk of scalding.
To avoid scalding:

Set the water heater set point temperature as low as possible.

Feel water before bathing or showering.

If thermostatic valves are required, use devices specifically designed for such purpose. Install these devices in accordance
with instructions provided by the manufacturer.
Failure to install a temperature limiting or mixing valve and follow these instructions could result in property damage, or severe personal
injury or death due to scalds.