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M. Excessive Make-Up Water
CAUTION
IF, DURING NORMAL OPERATION, IT IS
NECESSARY TO ADD MORE WATER THAN
INDICATED BELOW, CONSULT A QUALIFIED
SERVICE TECHNICIAN TO CHECK YOUR SYSTEM
FOR LEAKS.
Model No.
Gallons Per
Month
Gallons Per
Year
IN3 0.1 1
IN4 0.1 1
IN5 0.2 2
IN6 0.2 2
IN7 0.2 3
IN8 0.2 3
IN9 0.3 3
IN10 0.3 4
IN11 0.3 4
IN12 0.4 4
A leaky system will increase the volume of make-up
water supplied to the boiler, which can signicantly
shorten the life of the boiler. Entrained in make-up
water are dissolved minerals, salts, and oxygen. When
the fresh, cool make-up water is heated in the boiler, the
minerals fall out as sediment, the salts coat the inside of
the boiler, and the oxygen escapes as a gas. The
accumulation of sediment eventually isolates the water
from contacting the cast iron. When this happens the
cast iron in that area gets extremely hot and eventually
cracks. The presence of free oxygen or chloride slats in
the boiler corrodes the cast iron from the inside. More
make-up water and higher concentrations of contami-
nants damage the boiler sooner. Our warranty does
not cover corrosion and sediment-related damage.
Clearly it is in everyone's best interest to prevent this
type of failure. You can do your part by ensuring that
your system is leak-free, keeping leakage to less than 2
percent of the total water volume each month.