HTP EVC115 - Manual (Page 11)

11
LP-379 REV. 3.25.14
Automatic Gas Shutoff Devices for Hot Water Supply Systems, ANSI Z21.22B / CSA 4.4-M99, by a nationally recognized testing
laboratory that maintains periodic inspection of production of listed equipment and materials. This valve must be marked with a
maximum set pressure not to exceed the marked maximum working pressure of the water heater. Install the T&P valve into the opening
provided and marked for this purpose on the water heater so that discharge water from the valve will not come in contact with any live
electrical parts.
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 shutoff 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.
Do not thread a cap or plug into the relief valve under any circumstances! Explosion and property damage, serious injury, or death may
result.
G. FILLING THE HEATER
This water heater DOES NOT ship with installed heating elements. A separate element kit must be acquired (see Table 2 for a list of
element kits). NOTE: Piping and filling this water heater WITHOUT installing an element kit will result in a leakage of water and possible
personal injury. Damages due to such a condition WILL VOID the warranty. HTP, Inc. is not liable for any damages caused by such a
condition.
When filling the water heater, open a hot water tap to release air in the tank and
piping. The tank must be full of water before the heater is turned on. Failure to ensure
the water heater is full before turning it on will result in damage to the water heater,
and could result in property damage. Such damages ARE NOT covered by water
heater warranty.

Make certain that the field installed drain valve is completely closed.

Open the shut-off valve in the cold water supply line.

Open the hot water faucets to allow air to vent from the heater and piping.

Allow sufficient time for the heater to completely fill with water.

Verify elements are installed correctly. Check for leaks.
H. SCALDING
APPROXIMATE TIME / TEMPERATURE RELATIONSHIPS IN SCALDS
120
o
F More than 5 minutes
125
o
F 1 ½ to 2 minutes
130
o
F About 30 seconds
135
o
F About 10 seconds
140
o
F Less than 5 seconds
145 o F Less than 3 seconds
150 o F About 1 ½ seconds
155 o F About 1 second
Table 3