Water Treatment. HydroTherm EW2-1203

TO TURN OFF GAS TO BOILER

3. Turn gas control knob clockwise to "OFF" position.

1. Set thermostat to lowest setting.

2. Turn off all eletrical power to the appliance if service is to be performed.

MAINTENANCE

This boiler has been designed to provide years of trouble free performance in normal installations. Examination by the homeowner at the beginning of each heating season, and in mid-heating season, should assure continued good performance. In addition, the boiler should be examined by a qualified service professional at least once every year.

BEFORE EACH HEATING SEASON

1. Remove and inspect draft hood and vent piping connecting draft hood to chimney or vent for obstructions, soot accumulation, rust or corrosion. Clean and replace as necessary. Check tightness of joints; seal all joints where necessary.

DANGER: To avoid fire and explosion hazards: Do not store anything against boiler or allow dirt/debris to accumulate in area immediately surrounding boiler. Keep boiler area clear and free from combustible materials, gasoline and other flammable vapors and liquids. Do not allow lint, paper or rags to accumulate near burners. Do not place clothing on boiler to dry.

2. Check boiler flue passageways in the boiler sections for any blockage or soot accumulation. Remove draft hood, jacket top and cast iron dome. Using a flash light, examine all flue passageways.

a. If passageways are free of soot and obstructions, replace dome and seal with furnace cement or high temperature silicone adhesive/sealant.

NOTE: Boiler is not for use in systems where water is replenished. Do not draw water from system for cleaning. Minerals in water can build up on heat transfer surfaces and cause overheating and subsequent failure of cast iron sections.

b. If passageways need cleaning, remove burners as described in paragraph 3 below. Insert long-handle bristle flue brush down between section tubes and upward through sections from combustion chamber in both diagonal directions to remove carbon from finned surfaces.

Vacuum debris. Replace dome and seal with furnace cement or high temperature silicone adhesive/sealant.

WARNING: Do not obstruct the flow of combustion and ventilation air. Failure to comply with this warning can result in carbon monoxide poisoning!

c. Reinstall jacket top panel and draft hood.

NOTE: If boiler is equipped with a low water cutoff, follow manufacturer’s maintenance instructions.

3. Check and clean burner assembly. Remove burner access panel. To remove burners, lift up and to rear until burners are disengaged from orifices. Brush top of burners with soft bristle brush; blow out with air or vacuum.

WATER TREATMENT

Water treatment is recommended in areas where water quality is a problem. A local water treatment company should be consulted to determine the requirements for your particular system.

4. Check gas manifold for proper position and reassemble burners to the manifold. Line up holes in burners with the orifices and slide assembly back into position.

BE SURE TO REINSTALL BURNER WITH PORTS ON

THE TOP SURFACE, UPRIGHT.

FREEZE PROTECTION

Where absolutely necessary, system antifreeze can be utilized. It must be compatible with hydronic heating systems. System must be designed to accommodate necessary changes in heat transfer, pump head, flow rate & expansion. For more information, consult The Hydronics

Institute Technical Topics Number 2A publication.

5. When a low water cut-off has been utilized, follow the manufacturer’s maintenance instructions. As a minimum, test electronic control operation at least once a year. Float type controls should be flushed twice a year.

6. Lubricate circulator motor according to manufacturer’s instructions. This information may be contained in labeling on the pump frame.

Note: Never use an RV-type antifreeze protection solution nor an automotive-type antifreeze as damage to the boiler and other system components may result.

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7. Follow “System Start-Up & Adjustments” procedures in the “Start-up & Operation” section of this manual.