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water boiler
Startup procedure
Follow information below to prevent
severe personal injury, death or sub-
stantial property damage:
• Do not use gasoline crankcase drain-
ings or any oil containing gasoline. See
burner manual for proper fuel oil.
• Do not attempt to start burner when
excess oil has accumulated, when unit
is full of vapor or when combustion
chamber is very hot.
• Do not start burner unless breeching,
burner mounting door and observation
port are secured in place.
• Never burn garbage or paper in the
boiler.
• Never leave combustible material
around the boiler.
When using antifreeze
automotive, ethylene glycol, undiluted
or petroleum-based antifreeze. Severe
personal injury, death or substantial
property damage can result.
• Use antifreeze especially made for
hydronic systems. Inhibited propylene
glycol is recommended.
• 0% solution provides protection to
about -0 °F. Do not exceed 0% mix-
ture.
• Local codes may require back-flow
preventer or actual disconnect from
city water supply.
• Determine quantity according to sys-
tem water content. Boiler water content
is listed on page 9 of this manual.
Percent of solution will affect sizing of
heat distribution units, circulator and
expansion tank.
• Follow antifreeze manufacturer's in-
structions.
Fill the system:
1. Close manual and automatic air vents and boiler
drain cock.
. Fill to correct system pressure. Correct pressure will
vary with each installation. Normal cold water fill
pressure for residential systems is 1 psig. Boiler
water pH 7.0 to 8. is recommended.
. Open automatic air vent one turn.
4. Open other vents.
a. Starting on the lowest floor, open air vents one at a
time until water squirts out. Close vent.
b. Repeat with remaining vents.
. Refill to correct pressure.
— Boiler Manual
Tips for water systems:
• Check boiler and system piping for leaks. Continual makeup water
will reduce boiler life. Minerals can build up in sections, reducing heat
transfer and causing cast iron to overheat, resulting in section failure.
• For pH conditions outside 7.0 to 8. range or unusually hard water areas
(above 7 grains hardness), consult local water treatment company.
To place in operation:
1. Verify boiler is filled with water.
. Open burner mounting door and verify burner door insulation sections
— Do not use
are in proper position. For model UO-, 0.8-GPH firing rate, ensure
the chamber floor insulation blanket is correctly positioned.
. Verify burner mounting door is closed tightly, observation port bolt is
tight and burner wiring harnesses are connected at the jacket crosstie.
4. Factory burner adjustment and settings may not be suitable for specific
job conditions. Always use combustion test equipment to check and
adjust.
a. Follow burner manual for start-up.
b. Allow boiler to heat to design conditions.
c. Using combustion test equipment, adjust the burner and barometric damper
for CO
and –0.0 inches w.c.
. To observe the flame, loosen the observation port center bolt. Rotate
the observation port so the sight glass is at the 6:00 position. Retighten
the center bolt. When finished viewing, loosen the center bolt. Rotate
the observation port so the glass is at the 1:00 position. Then retighten
the bolt. This will prevent soot from depositing on the glass.
6. Vent air from system. Repeat steps 4 and under "Fill the system." Air
in system can interfere with water circulation and cause improper heat
distribution.
7. Check boiler and system piping for leaks. See "Tips for water sys-
tems."
8. Inspect breeching and venting for proper operation.
Follow additional instructions:
Failure to maintain recommended pH and repair leaks can
cause section iron corrosion, leading to section failure and
leaks. Do not use petroleum-based sealing or stop-leak com-
pounds in boiler systems. Damage to system components can
result.
between 11% and 1%, 0 smoke, and breeching draft between –0.01
Make final burner adjustments using combustion test equip-
ment to assure proper operation. Do not fire boiler without
water. Sections will overheat, damaging boiler and resulting
in substantial property damage.
Burner Manual
Read and follow the
tions packed with the boiler or components.
and all other instruc-
Part number 550-141-986/1005
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