HARDY MANUFACTURING CO., INC (MODEL KBP270) PAGE 12
2-7 Filling the Heater with Water
THE FURNACE MUST BE FILLED WITH WATER BEFORE OPERATION.
There is a low water switch located in a fitting on the rear of the
heater
. This low water switch
signals a low water condition in the process control module. The process control module will
enable the automatic water fill valve assembly until the condition no longer exists.
The
Furnace will not operate while in a Low Water Condition.
There are certain parts of the country that have high enough levels of chloride in the water to
be harmful to stainless steel tanks. Even though the USDA allows up to 250 parts per million
of chloride (salt) in the water as acceptable for drinking, experience has shown that chloride
levels as low as 45 parts per million will eventually cause stress corrosion cracking in stainless
steel tanks when water is heated. It is therefore required to use rain water or bottled water with
chloride content of less than 15 parts per million or test the water supply for chloride to assure
that the water supply does not exceed 45 parts per million. Call your Hardy dealer to obtain a
chloride test on your water supply. If the chloride content of your local water supply exceeds
the specifications mentioned above and necessitates the use of bottled or rain water, please
do so to maintain the warranty of your
heater
.
Fill your
heater
with water through the condenser stack opening until the water level is
approximately 1” from top of tank.
