15
Part Number 550-110-832/1014
OWB & OWT
Series 2
Oil-Fired Water Boilers –
Boiler Manual
8 Start-up
For additional information, refer to instructions packed with boiler or
burner:
• Burner Manual
• Component literature
Follow information below to prevent severe personal
injury, death or substantial property damage:
•
Do not use gasoline crankcase drainings 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 collector hood, breeching
and burner mounting door are secured in place.
• Never burn garbage or paper in the boiler.
• Never leave combustible material around it.
Fill the system
1. Close manual and automatic air vents and boiler drain cock.
2. Fill to correct system pressure. Correct pressure will vary
with each installation. Normal cold water fill pressure for
residential systems is 12 psig. Boiler water pH 7.0 to 8.5 is
recommended.
Failure to maintain recommended pH level can cause
section failure and leaks.
3. 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.
5. Refill to correct pressure.
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.
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 compounds in boiler
system. Damage to system components can
result.
• For pH conditions outside 7.0 to 8.5 range or unusually hard
water areas (above 7 grains hardness), consult local water
treatment company.
• When using antifreeze:
Do not use 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.
• 50% solution provides protection to about -30 °F. Do not exceed
50% mixture.
• Local codes may require backflow preventer or actual
disconnect from city water supply.
•
Determine quantity according to system water content. Boiler
water content is listed on back cover of manual. Percent of
solution will affect sizing of heat distribution units, circulator
and expansion tank.
• Follow antifreeze manufacturer’s instructions.
Place in operation
1. Verify boiler is filled with water.
2. Open burner mounting door and verify rear target wall, floor and
burner door insulations are in proper position and condition.
3. Verify burner mounting door is closed tightly and burner wiring
harness is connected securely.
4. Factory burner adjustment and settings may not be suitable
for specific job conditions. Refer to burner manual for burner
start-up, adjustment and checkout procedures.
5.
Burner should be adjusted to 13% CO2 or less with a smoke
level of zero and over-fire of -0.01
” to -0.02”. Re-adjust burner
combustion to account for environmental conditions. Actual
CO2 value will vary and should be adjusted for clean and safe
combustion operation. Seasonal variations as well as sufficient
combustion air supply can affect proper combustion and boiler
performance. The burner should only be adjusted by a service
professional with appropriate instrumentation.
Make final burner adjustments using combustion
test equipment to assure proper operation. Do not
fire boiler without water. Sections will overheat,
damaging boiler and resulting in substantial property
damage.
6. Vent air from system. Repeat steps 4 and 5 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
systems” on this page.
8. Inspect breeching and venting for proper operation.
