UTICA BOILERS JE Installation Manual download pdf (Page 34)

Cleaning The Steam Boiler

Steam boilers must be cleaned prior to use in order to

ensure efcient operation.

Grease, oil, sand and dirt cause scum to form on the

surface of water in new boilers. Heavier particles carried in

grease may settle to bottom of boiler and form sludge. If

permitted to remain in boiler it will prevent generation of

steam, produces foaming and causes an unsteady water

line. Remove accumulation of oil and grease by blowing off

boiler as follows:

Install surface skim connection of at least 1¼” nominal

pipe size in boiler using skim tee. See Figure 35 page

27. Skim line should extend to within 18” of oor or

appropriate drain.

A. Insert valve in line close to boiler.

Bring water line to center of outlet.

A. Raise temperature to just below steaming.

B. While burners are on, open the valve in skim line

and slowly feed clean water into boiler adjusting

inlet water so boiler water remains hot.

C. Continue skimming until water is clean.

Close valves in boiler feed line and skim line.

Bring boiler pressure to about 10 lbs.

A. Turn burners off.

B. Open bottom drain valve permitting all water to

drain from boiler.

After boiler has cooled, ll and ush out several times.

Fill to proper water level and ready for normal service.

Do not use soda or any alkali, vinegar or acid for cleaning

heating boilers, it is difcult to completely remove them.

Injury may occur after cleaning process if these agents are

used.

Boiler Water Treatment

In steam systems where system is tight, free from leaks,

and all steam is returned to boiler as condensate, amount

of make up water is small. Water treatment is not required.

On steam systems with less than 90% of steam being

returned as condensate, or with very hard or corrosive

make up water, treatment may be desirable. Follow

recommendations of ASME (American Society of Mechanical

Engineers) Boiler and Pressure Vessel Code, Section VI,

latest version.

Between Heating Seasons

Boilers should not be drained between heating seasons.

Steam boilers should be entirely lled with water during the

summer months to exclude air.

Low Water Cutoff(s)

Inspect low water cutoff(s) annually or as recommended

by low water cutoff manufacture. Flush oat types per

manufacturer’s instructions.

General Housekeeping

• Keep boiler area clear and free from combustible

materials, gasoline and other ammable vapors and

liquids.

• Keep boiler area clear of obstructions to ow of

combustion and ventilation air.

CLEANING AND MAINTENANCE

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UTICA BOILERS JE Installation Manual Page 34

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