Water Level Check; Annual Inspection And Cleaning; Safety Check For Control Systems; Protection From Freezing/Water Treatment - Slant/Fin SE-70 Installation And Operating Instructions Manual

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E. BOILER ROOM AIR SUPPLY: check air vents for contin-
ued POSITIVE supply of air as required. Air needs are
greatest in cold weather. Air vents must be open and
free of obstruction.
F. WATER SYSTEM CHECK:
1. System to be full of water, and pressure to remain
stable at correct setting on gauge.
2. Air control system: noise and air binding in radiation
should not occur.
3. Water lines: slightest leaks should be corrected.
4. Low water cutoff, for operation (see instructions fur-
nished with unit).
2. WATER LEVEL CHECK DURING HEATING SEASON
A. Check water pressure regularly and add water slowly to
system when needed. If much water is added, venting
may be necessary.
B. Regular loss of water from water boiler system may indi-
cate either a system leak, or a faulty air control system,
or a faulty automatic fill valve.

3. ANNUAL INSPECTION AND CLEANING

A. It is important that this boiler be inspected by a competent
serviceperson to help insure safe and reliable operation.
B. Check for gas leaks from valve and gas piping to burn-
ers and pilot. If leaks are found, repair or replace as
required.
C. This inspection should include:
1. Controls check. See "Safety Check for Control
System" (No.4) below.
2. Recheck of input gas rate to burners. See "Initial
Start" paragraph in "Operating instructions" section.
3. Re-adjusting for best flame characteristics of main
flame and pilot(s).
See "Initial Start" paragraph in "Operating
Instructions" section and see "Burner Adjustment"
section.
4. Burner and boiler flue passage cleanliness:
BURNER AND FLUE CLEANING (see figure 13). It
is suggested that paper be placed on burners to col-
lect any foreign material when cleaning flues.
5. Remove jacket top and flue cover.
6. Use wire brush to clean flueways.
7. Replace flue cover and re-seal with furnace cement.
Replace jacket top. Remove and dispose of paper
and accumulated material.
8. If burner surfaces are not clean, or if uneven flame
indicates plugged burner ports, remove and clean
burners.
NOTE-TO REMOVE BURNERS:
1. Disconnect pilot at pilot mount, or disconnect pilot gas
line at gas valve, before removing burners next to pilot.
2. Lift burner and remove burner from orifice.
3. Clean and replace burners* and pilot. Adjust burners as
described on page 9.
*To clean burners run a clean flue brush up the tube until all foreign mat-
ter is removed.
WARNING:
The ceramic combustion chamber in the burner box contains
crystalline silica. Wear proper dust mask and gloves when servic-
ing combustion chamber or burners.Crystalline Silica has been
identified as a carcinogen or possibly carcinogenic to humans.
4. SAFETY CHECK FOR CONTROL SYSTEM
A. High limit control test: Set thermostat high enough for
boiler water temperature to reach high limit control
setting. When this temperature is reached, the high limit
switch should open, and the main gas valve should
close automatically. If the high limit does not operate to
close the main gas valve, the valve, the high limit or the
wiring is faulty. Repair or replace immediately.
B. Gas valve safety shutdown test:
For boilers equipped with Honeywell S8600 intermit-
tent pilot system, with main burners firing, disconnect
the ignition cable from the S8600 IGNITOR BOX.
The gas valve should shut off the main burners.
If the gas valve fails to shut down main burners when
the test is performed, replace the gas valve.
C. Check for gas leaks from valve and gas piping to burn-
ers and pilot. If leaks are found, repair or replace as
required.
5. PROVIDING PROTECTION FROM FREEZING
A. Anti-freeze is sometimes used in hydronic heating sys-
tems to protect against freeze-up in the event of power
failure or control shutdown when the building is unoccu-
pied. It should be recognized that unless the building is
kept above freezing temperature by some means, the
plumbing system is not protected.
Two types of anti-freeze may be used: ETHYLENE
GLYCOL, used in automobiles, has desirable properties,
but is toxic. Its use may be prohibited when system
water/glycol solution is in contact with a potable water
vessel (as with a tankless heater). PROPYLENE GLY-
COL is used in the quick-freeze food industry; it is prac-
tically non-toxic. Its use may be permitted when tankless
heaters are used. When anti-freeze must be used,
inhibited propylene glycol is recommended. Useful infor-
mation on the characteristics, mixing proportions, etc. of
glycol in heating systems is given in Technical Topics
No. 2A, available from the Hydronics Institute 34 Russo
Place, Berkeley Heights, NJ 07922. Consult glycol man-
ufacturers for sources of propylene glycol.
B. Water Treatment:
A good water treatment program will not only extend the
useful life of this boiler but it will also save much of the
time and expense of repairs made necessary by pre-
ventable occurrences.
A reputable water treatment company should be con-
sulted to evaluate and determine the best overall treat-
ment program for your boiler equipment.
6. KEEP THE BOILER AREA CLEAR AND FREE FROM
COMBUSTIBLE MATERIALS, GASOLINE, AND OTHER
FLAMMABLE VAPORS AND LIQUIDS.
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