Service manual

MSE Series Electric Boilers – Installation and Service Manual
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2.6 SYSTEM OPERATING REQUIREMENTS
MSE series electric boilers are designed for use in closed loop hydronic systems and are not intended for
open systems, such as domestic hot water and pools, where water is continually replenished. Operating
the boiler in an open system will result in premature failure due to corrosion of the boiler. Electric boilers
may be used to heat water in open systems indirectly by installing a heat exchanger, such as the Super
Hot C-coil or Indirect Tank, to separate open and closed systems.
Avoid unnecessary replenishment of system water. It can allow oxygen to enter the system and cause
serious corrosion problems. As well, minerals dissolved in the water supply will precipitate when heated,
thus preferentially depositing in the boiler.
The use of oxygen barrier piping is strongly recommended to protect the system and its components from
corrosion. Chemical inhibitors are not recommended as their improper use or maintenance can cause
accelerated corrosion, and premature failure of the boiler tank and its components. If your system
includes “non-oxygen barrier tubing”, please contact the factory of your heating professional for
recommendations.
Corrosion is a preventable condition and therefore failure due to corrosion is not covered by the
Super Hot product warranty.
MSE series electric boilers must always be used with forced system circulation.