State Industries SHE 50 76N Manuel D’Utilisation

17

discharge opening must not be blocked or reduced in size under 

any circumstances. Excessive length, over 30 feet (9.14 m), or

use of more than four elbows can cause restriction and reduce 

the discharge capacity of the valve.
No valve or other obstruction is to be placed between the 

Temperature-Pressure Relief Valve and the tank. Do not connect 

discharge  piping  directly  to  the  drain  unless  a  6”  (15.2  cm)

air gap is provided. To prevent bodily injury, hazard to life, or 

property damage, the relief valve must be allowed to discharge 

water in adequate quantities should circumstances demand. If 

the discharge pipe is not connected to a drain or other suitable 

means, the water flow may cause property damage.

Temperature-Pressure Relief Valve discharge

  pipe must terminate at adequate drain.

•  Should not be smaller in size than the outlet pipe size of the valve, or 

  have any reducing couplings or other restrictions.
•  Should not be plugged or blocked.
•  Should not be exposed to freezing temperatures.
•  Should be of material listed for hot water distribution.
•  Should be installed so as to allow complete drainage of both the 

  Temperature-Pressure Relief Valve and the discharge pipe.
•  Must terminate a maximum of six inches above a floor drain or external 

  to the building. In cold climates, it is recommended that the discharge 

  pipe be terminated at an adequate drain inside the building.
•  Should not have any valve or other obstruction between the relief 

  valve and the drain.

Burn hazard.

Hot water discharge.

Keep clear of Temperature-

  Pressure Relief Valve

  discharge outlet.

The Temperature-Pressure Relief Valve must be manually operated 

at least twice a year. Caution should be taken to ensure that (1) no

one is in front of or around the outlet of the Temperature-Pressure 

Relief Valve discharge line, and (2) the water manually discharged

will not cause any bodily injury or property damage because the 

water may be extremely hot. If after manually operating the valve, it 

fails to completely reset and continues to release water, immediately 

close the cold water inlet to the water heater, follow the draining 

instructions in this manual, and replace the Temperature-Pressure 

Relief Valve with a properly rated/sized new one.

note: The purpose of a Temperature-Pressure Relief Valve is to 

prevent excessive temperatures and pressures in the storage tank. 

The T&P valve is not intended for the constant relief of thermal 

expansion. A properly sized thermal expansion tank must be installed 

on all closed systems to control thermal expansion, see Closed Water 

Systems and Thermal Expansion on page 15.

If you do not understand these instructions or have any questions 

regarding the Temperature-Pressure Relief Valve call the toll free number 

listed on the back cover of this manual for technical assistance.

This heater is approved for operation up to 5,300 feet (1,615 m)

without alteration. High altitude models are available from the factory 

for elevations between 5,300 feet (1,615 m) and 10,100 feet (3,079

m).  For  elevations  above  10,100  feet  (3,079  m)  the  input  rating

should be reduced at the rate of 4 percent for each 1,000 feet (305

m) above sea level which requires replacement of the burner orifice in

accordance with National Fuel Gas Code (ANSI Z223.1/NFPA 54) or

the Natural Gas and Propane Installation Code (CAN/CSA B149.1).

Contact your local gas supplier for further information.

Failure to replace standard orifice with a high altitude orifice when installed

above 10,100 feet (3,079 m) could result in improper and inefficient

operation of the appliance, producing carbon monoxide gas in excess of 

safe limits, which could result in serious injury or death. Contact your gas 

supplier for any specific changes which may be required in your area.

Do  not   use  water heater with any

gas other than the gas shown on

the rating plate.

Excessive  pressure to gas control

valve can cause serious injury or death
Turn off gas lines during installation.

Contact qualified installer or 

service agency.

Make sure the gas supplied is the same type listed on the model rating 

plate. The inlet gas pressure must not exceed 14 inch water column (3.5

kPa) for natural and propane gas (L.P.). The minimum inlet gas pressure

shown on the rating plate is that which will permit firing at rated input.
All gas piping must comply with local codes and ordinances or with the 

National Fuel Gas Code (ANSI Z223.1/ NFPA-54) or the Natural

Gas and Propane Installation Code (CAN/CSA B149.1) whichever

applies. Copper or brass tubing and fittings (except tin lined copper

tubing) should not be used.
If the gas control valve is subjected to pressures exceeding 1/2 psi 

(3.5 kPa), the damage to the gas control valve could result in a fire

or explosion from leaking gas.
If the main gas line Shut-off serving all gas appliances is used, also 

turn “off” the gas at each appliance. Leave all gas appliances shut

“off” until the water heater installation is complete.