Service manual

SC Series Boilers – Installation and Service Manual
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2.7 WATER PIPING
The water piping system of a boiler connected to heating coils located in air handling units where they
may be exposed to refrigerated air circulation must be equipped with flow control valves or other
automatic means to prevent gravity circulation of the boiler water during the cooling cycle.
The boiler, when used in connection with a refrigeration system, must be installed so the chilled medium
is piped in parallel with the boiler with appropriate valves to prevent the chilled medium from entering the
boiler.
2.8 CORROSION PREVENTION (INTERNAL)
We specify the use of oxygen barrier tubing to protect the system and its components from corrosion.
Chemical inhibitors are not recommended, as their improper use or maintenance can cause accelerated
corrosion, resulting in premature failure of the boiler heat exchanger and/or system components.
Corrosion is a preventable condition and is not covered by the Super Hot product warranty. Should your
system include "non-oxygen-barrier-tubing" please contact the factory or your heating professional for
recommendations.
2.9 SYSTEM OPERATING REQUIREMENTS
WARNING
If you do not follow these instructions exactly, a fire or explosion may result causing property
damage, personal injury or loss of life.
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;
minerals preferentially deposit in the system and the heat exchanger. Do not draw water from the heating
system for cleaning, flushing, etc.
Figure 7 – Vertical venting installed as a direct vent Figure 8 – Vertical venting installed as non-direct vent