Slant/Fin EC-20 Installation - Manual (Page 14)

EUTECTIC EC-20 14
7. Protect all of the fireside surfaces by swabbing with
neutral mineral oil.
8. Close main cast iron burner door (door on which
burner is mounted). Make sure that the entire seal
is making good contact with the boiler casting when
replacing both 16 mm (5/8") special nuts and
tightening.
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 Slant/Fin
website, go to http://slantfin.com. Go to library, select
current literature, select boiler model. See related topics
and select antifreeze and hydronic systems. Consult
glycol manufacturers for sources of propylene 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 CO
2
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.
Put the baffles in place. Align the convection accelerators with the first fins.
B C D E
EC-25 X X
EC-26 X X X X
EC-27 X X X X
EC-28 X X X X
Figure 5. Baffle plates.