WARNING:
The boiler area should be kept free of combustible materials, gasoline and other flammable liquids.
The boiler and venting system must be kept free of obstructions of the air louvers.
The following procedures must be conducted as outlined to prevent damage to and assure safe operation of the boiler.
All cover plates, enclosures, and guards must be in place at all times, except during maintenance and servicing.
3.1CLEANING THE BOILER AND SYSTEM – NEW SYSTEMS
3.1.1
Much of the dirt and contamination in a new hot water system can be flushed out before the boil out of the system. First, flush the system of waste with clear water. The boiler and circulating pumps must be isolated through the successive zones of the system to waste, carrying metal shavings, dirt, pipe joint compound, etc. with it. Follow with a chemical flush. NOTE! Be CERTAIN that the chemicals used to flush and
In combination with system contamination, bacteria from ground water boiler water may produce objectionable odors, sometimes resembling the odorant used in natural gas. It is
51
Date: 8-4-2010
Revision: 0
Form: 2396
important to keep these fumes from air intakes that would distribute them throughout the building.
3.1.2BOIL OUT PROCEDURE
The boil out of the boiler and system is neither difficult nor expensive. The chemicals needed for cleaning are readily available.
Fill the system with this solution, venting all air. Then, with the circulating pump running, bring the system to design or operating temperature. After circulating water for two to three hours, the system should be drained completely, and refilled with fresh, softened water. Usually enough of the cleaning solution will adhere to the piping to result in an alkaline solution satisfactory for operation. A pH reading between 7 and 8 is preferred. If necessary, to increase the pH, a small amount of cleaner may be added.
WARNING:
The boil out procedure outlined must be performed by, or under the direct supervision of, a qualified technician. The chemicals used present a hazard of burns and physical injury if mishandled. Always use a suitable facemask, goggles, protective gloves, and garments when handling caustic chemicals. Do not permit the chemical to come into contact with skin or clothing. Always follow the safety precautions on the container's label. Add chemicals slowly and in small amounts to prevent excessive heat and agitation.
