Slant/Fin XL-2000 dimensions Do not USE Ethylene Glycol Because IT is Toxic, III. OIL Burner

XL-2000 9

6.Use the flue brush to clean the pinned flueways between the sections.† A wire brush may be used to remove any carbon accumulation that may have developed in the combustion chamber. Vacuum the loose soot and debris from the boiler.

7.Inspect the burner combustion head. Clean if nec- essary and make sure all the adjustments are cor- rect. (See burner data pages for the burner installed.) Replace oil nozzle with new one and readjust electrodes. To insure proper burner opera- tion ONLY THE NOZZLES SPECIFIED IN THIS MANUAL OR ON THE BURNER LABEL SHOULD BE USED FOR REPLACEMENT.

8.Protect all of the fireside surfaces by swabbing with neutral mineral oil.

9.Close main cast iron burner door (door on which burner is mounted). Make sure that the entire seal (fiberglass rope) is making good contact with the boiler casting when replacing 3/8-16 x 1” long hex head bolt and tightening.

10.Check the flue collector seal. This is the flat rope seal on top of the heat exchanger. The rope must be in place adjacent to the long bosses on front and rear sections and adjacent to the short bosses on the intermediate sections. The rope should be directly under the flue collector flanges when the flue collector is replaced. Use the two 1/4-20 x 3/4” washer hex head screws to fasten the flue collector. In order to assure a proper seal be sure that the flue collector is compressing the flat rope and not hanging up on the section bosses. Tighten the two

screws.

D.If boiler room is damp, provide ventilation.

II. PROVIDING PROTECTION FOR FREEZING Anti-freeze is sometimes used in hydronic heating sys- tems to protect against freeze-up in the event of power failure, or safety control shutdown when the building is unoccupied. It should be recognized that unless the building is kept above freezing temperature by some means, the plumbing system is not protected.

PROPYLENE GLYCOL is used in the quick-freeze food industry; it is practically non-toxic. Its use may be permit- ted when indirect water heaters are used. When anti- freeze must be used, inhibited propylene glycol is recom-

mended. Useful information on the characteristics, mixing proportions, etc. of glycol in heating systems is given in Technical Topics No. 2A, available from the Hydronics Division of GAMA, 35 Russo Place, Berkeley Heights, NJ 07922. Consult glycol manufacturers for sources of propy- lene glycol.

DO NOT USE ETHYLENE GLYCOL BECAUSE IT IS TOXIC.

III.OIL BURNER

Inspect and clean annually and following any period of improper operation. Recheck and adjust settings as speci- fied for burner model and nozzle size.

Set burner air and draft regulator, using test instruments to obtain recommended CO2 and draft without smoke. See the Burner Data page in this manual that corre- sponds to the burner installed.

IV. GENERAL MAINTENANCE

These operations are recommended to be performed at regular intervals:

A.BOILER HEATING SURFACES: clean off all coatings found. Reseal covers.

B.BOILER CONTROLS: check contacts, settings, correct functioning.

C.PIPING: check piping and accessories for leaks.

D.CHIMNEY or STUB VENT and BREECHING: check for obstructions and leaks.

E.COMBUSTION AIR TO BURNER: check for continued POSITIVE supply of air as required. Air needs are greatest in coldest weather. Refer to AIR SUPPLY, page 3.

F. WATER SYSTEM: check

1.System to be full of water and pressure to remain stable (between 12 psi and 25 psi).

2.Air-control system: noise and air binding in radiation should not occur.

3.Water lines: slightest leaks should be corrected. G.BOILER ROOM AIR SUPPLY: air vents should be open

and free of obstruction. See page 3.

†A flue brush (2-1/4" dia.) is supplied with boiler. Replacements are available from dealer or hardware stores.