Operating instructions

15
8. BOILER WATER TREATMENT
Boiler water treatment will help maximize the
effectiveness and prolong the life of pressure vessels.
The general objectives of boiler water
treatment are:
A. Remove corrosive gases from feedwater and
boiler water.
B. Prevent sludge and scale deposits on the water
side heating surfaces.
C. Prevent foaming and carryover.
Consult with a local water treatment company
regularly engaged in the treatment of boiler water for
advice in maintaining the proper feedwater, boiler water,
and condensate chemistry.
Certain state and local codes may restrict the use of
some chemicals listed for cleaning and maintaining the
boiler. Check with local authorities before proceeding
with the use of any chemicals.
9. MAKE PH OR ALKALINITY TEST
After boiler and system have been cleaned and
relled as previously described, test the pH of the water
in the system. This can easily be done by drawing a
small sample of boiler water and testing with hydrion
paper which is used in the same manner as litmus
paper, except it gives exact readings. A small color chart
on the side of the hydrion dispenser gives the reading
in pH. Hydrion paper is inexpensive and obtainable
from any chemical supply house or through your local
druggist. The pH should be higher than 8.3 but lower
than 10.5. Add some washout chemical (caustic soda), if
necessary, to bring the pH within the specied range.
NOTICE
10. IMPORTANT
If, during normal operation, it is necessary to add
water to this boiler more frequently than once a month,
consult a qualied service technician to check your
system for leaks. A leaky system will increase the
volume of make-up water supplied to the boiler which
can signicantly shorten the life of the boiler. Entrained
in make-up water are dissolved minerals and oxygen.
When the fresh, cool make-up water is heated to the
boiler the minerals fall out as sediment and the oxygen
escapes as a gas. Both can result in reduced boiler life.
Problems caused by oxygen and mineral
contamination of boiler water are not covered under
Burnham Commercial’s standard warranty. Therefore,
it is in everyone’s best interest to prevent this type of
system failure. The maintenance of the system integrity
is the best method to achieve this.
NOTICE
Recommended Water Quality Requirements
pH - 8.3 - 10.5
TDS - 3500 ppm (Max)
Total alkalinity ppm as CaCO
3
- 1200 (Max)
Total copper ppm - .05
Oily matter ppm -1
total harness ppm -3
chlorides - < 50 ppm