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CONNECTING THE WATER
• All pipes, pipe fittings, valves and other components, including soldering materials, must be
suitable for potable water systems.
• A manual shut off valve must be installed on the cold water inlet to the water heater between the
main water supply line and the water heater.
• Only a gate valve or a ball valve is to be used on the cold water supply.
• Check the cold water pressure. If above 145 psi an approved limiting valve must be fitted.
• Before installing the water heater, flush the water line to remove all debris, and after installation
complete, purge the air from the line. Failure to do so may cause damage to the heater. To prevent
water heater water system damage caused by excessive pressure. At the water outlet of the water
heater, it is necessary to install an appropriate pressure relief valve to protect the water system and
user safety. The pressure relief valve complies with ANSIZ21.22/CSA 4.4
• In the hot water system, the temperature rises continuously, and the volume of water expands.
• If the system is equipped with an expansion tank or a flexible connection bellows can absorb a
part of the expansion amount, the expansion tank or the soft connection bellows cannot absorb
the pressure relief valve needed to protect the pressure relief valve to protect The entire system
prevents breakage of pipes and other components, so the relief valve pressure setting is generally
selected to be slightly less than the maximum pressure (Pmax) that the entire system can withstand.
• In addition, the pressure cannot be the same as the normal operating pressure, too close to the
normal operation of the pressure relief valve will frequently pressure relief, lower temperature and
pressure relief valve service life.
• In order to prevent the damage of the temperature probe or control system and cause the
continuous heating of hot water to reach 212° F(100°C) vaporization, it is necessary to install a
temperature and pressure safety valve, and the temperature and pressure valve temperature
reaches 210° F(99°C) to relieve the pressure, thereby protecting the entire system. So the safety
valve temperature is generally set to 210° F(99°C).
• There is a wire mesh filter to discourage debris from entering your heater. Clean filter after initial
installation to ensure no debris from the pipe work has clogged it.
