INSTALLATION, OPERATION AND MAINTENANCE MANUAL
Easco Boiler Corp 1175 Leggett Ave Bronx, NY 1047 T: 718.378.3000 F: 718.378.4560 [email protected] easco.com
Page 23 of 46
by 8.33 lbs/gal to get water content in gallons. Additional containers may be required to
dissolve sufficient chemicals for large boiler models. Remove a safety valve with extra
care to avoid damaging it and add solution to boiler water through the exposed tapping.
CAUTION!
Use Extreme Care in handling tri-sodium phosphate. It is very Corrosive
and Harmful to skin, eyes and clothing. Use of a face mask, goggles, rubber gloves, and
protective clothing is required. Do Not Permit the dry material or concentrated solution
to come into contact with skin, eyes or clothing.
3) Close all valves leading to and from the system to isolate the cleaning solution from
the system.
4) Start burner and operate sufficiently to boil the water without producing steam
pressure. Boil for about 5 hours. Open boiler feed pipe sufficiently to permit a steady
trickle of water from the surface blow-off pipe. Continue this slow boiling and trickle of
overflow for several hours until the water coming from the overflow is clear.
5) Stop burner and drain Boiler in a manner and to a location that hot water can be
discharged with safety.
6) When the Boiler has cooled down to 120 °F or below, refill it to the normal water line.
If water in gauge glass does not appear to be clear, repeat steps (1) through (5) above,
boiling out the Boiler for a longer time.
7) Remove the temporary surface blow-off pipeline and plug the tapping and reinstall
the safety valve. Boil or bring water temperature to 180 °F promptly to drive off any
dissolved gases in the fresh water.
4.11 Cleaning a New Hot Water Boiler
The oil and grease, which accumulate in a new hot water Boiler, can be washed out in
the following manner:
1) Remove a safety relief valve using extreme care to avoid damaging it.
NOTE:
Certain State and local codes may restrict the use of the chemicals listed for
cleaning and maintaining the Boiler. Check with local authorities before proceeding to
use any chemicals.
2) Dissolve caustic soda or tri-sodium phosphate into a container of water at the rate of
1 lb of either chemical per 50 gallons of total boiler water in the system. See Table 1 for
boiler water content in pounds and divide by 8.33 lbs/gal to get water content in gallons.
CAUTION!
Use Extreme Care in handling caustic soda or tri-sodium phosphate. They are
very Corrosive and Harmful to skin, eyes and clothing. Use of a face mask, goggles, rubber
gloves, and protective clothing is required. Do Not Permit the dry material or concentrated
solution to come into contact with skin, eyes or clothing.
