Weil-McLain WGO User Manual
WGO, WTGO and SGO-WWGO, WTGO and SGO-W
WGO, WTGO and SGO-W
WGO, WTGO and SGO-WWGO, WTGO and SGO-W
Series 3 Series 3
Series 3
Series 3 Series 3
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Oil-Fir
Oil-FirOil-Fir
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ater Boilers
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MaintenanceMaintenance
Maintenance
MaintenanceMaintenance
and Serviceand Service
and Service
and Serviceand Service
GuideGuide
Guide
GuideGuide
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Part No. 550-141-828/1202Part No. 550-141-828/1202
Part No. 550-141-828/1202
Part No. 550-141-828/1202Part No. 550-141-828/1202
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Read This Page First
Hazard Definitions
Following terms are used to bring attention to the presence of hazards of various risk levels, or
to important information concerning product life.
Indicates presence of hazards that will cause severe personal injury, death or
substantial property damage if ignored.
Indicates presence of hazards that can cause severe personal injury, death or
substantial property damage if ignored.
Indicates presence of hazards that will or can cause minor personal injury or
property damage if ignored.
Indicates special instructions on installation, operation, or maintenance that
are important but not related to personal injury hazards.
Symbol Definitions
These symbols indicate information for and procedures to be followed by:
Homeowner or person responsible for simple start-up and routine
maintenance of boiler and system. Pages 2 through 6 must be followed
to assure proper operation of your boiler. Page 7 lists common problems
and possible corrections. In addition, it is your responsibility to:
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Have boiler and burner installed by a qualified installer.
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Have boiler and burner serviced annually by a qualified service
technician.
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Review and understand start-up and routine maintenance
procedures with qualified service technician.
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Perform routine maintenance as described on page 4.
Qualified service technician who has the necessary equipment to
check the boiler and system performance, and is responsible for
start-up and service of boiler and system. Pages 2 and 3 and 8
through 11 must be followed to assure proper operation of this boiler.
In addition, it is the responsibility of this person to:
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Annually service boiler and burner to assure proper operation. See page 8
for service record.
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Review and explain start-up and routine maintenance procedures with
homeowner.
2
For Your Safety
DANGER
Follow instructions below to
prevent severe personal injury, death or substantial property damage:
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Do not use crankcase drainings or any oil
containing gasoline. See burner manual for
proper fuel oil.
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Do not attempt to start burner when excess
oil has accumulated in combustion chamber,
when unit is full of vapor, or when combustion chamber is very hot.
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Do not start burner unless collector hood, flue
cap, jacket cap, breeching and burner mounting door are secured in place.
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Never burn garbage or paper in the boiler.
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Never leave combustible material around
boiler.
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DO NOT TAMPER WITH UNIT OR CONTROLS.
Always follow specific instructions when
starting up boiler or performing routine
maintenance or service.
WARNING
Follow instructions below to
prevent severe personal injury, death or substantial property damage:
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To avoid electric shock, disconnect electrical
supply to burner service switch and additional
external switches before performing service.
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To avoid severe burns, allow boiler to cool
before performing service.
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Do not block flow of combustion or ventilation
air to boiler.
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Boiler must be connected to a flue with
sufficient draft at all times to assure proper
operation.
Do not use this boiler if any part has been
under water. Electrical and mechanical
failures may cause electric shock and fire
risks. Immediately call a qualified service
technician to inspect chimney or vent,
boiler and burner. Have the boiler flueways
cleaned and have the following replaced:
— all electrical and mechanical controls
— electrical wiring
— oil burner and controls
— insulation and chamber lining
Tips for water systems:
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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.
CAUTION
mended 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 systems.
Damage to system components can result,
causing property damage.
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Boiler water pH 7.0 to 8.5 is recommended.
For pH conditions outside 7.0 to 8.5 range or
unusually hard water areas (above 7 grains
hardness), consult local water treatment
company.
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When using antifreeze:
- Use antifreeze especially made for
hydronic systems. Inhibited propylene
glycol is recommended.
ethylene glycol, undiluted or petroleumbased antifreeze. Severe personal injury,
death or substantial property damage can
result.
- 50% solution provides protection to about
0
F.
-30
- Local codes may require back-flow
preventer or actual disconnect from city
water supply.
- Determine quantity according to system
water content. Boiler water content is
listed on back cover of Boiler Manual.
Percent of solution will affect sizing of
heat distribution units, circulator and
expansion tank.
- Follow antifreeze manufacturer's instructions.
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Do not add cold water to hot boiler. Thermal
shock can cause sections to crack.
Failure to maintain recom-
Do not use automotive,
3
Routine Maintenance Schedule
444
444
4
The schedule below is specifically designed for the homeowner.
Please read pages 2 and 3 before proceeding.
Beginning each heating season:
Call a qualified service technician to perform
annual service.
End of heating season:
If tankless heater is installed, boiler will
continue to operate. Check for the following:
Daily during heating season:
Check that boiler area is free from combustible materials, gasoline and other flammable
vapors and liquids.
Weekly during heating season:
Check for and remove any obstructions to flow
of combustion or ventilation air to boiler.
Check that breeching is attached between
boiler and chimney. If breeching is loose or
damaged, immediately turn off switch on
boiler and call service technician to repair.
Check for oil leaks in oil piping and around
burner. If found, immediately call qualified
service technician to correct situation.
Check for water leaks in boiler and piping;
also check for leaks around tankless heater
plate, if installed. If found, immediately call
service technician to repair.
- All daily and weekly instructions listed on
this page must be followed.
- Burner motor may have to be oiled. Some
motors are permanently lubricated and do
not need additional oil. Check for oiling
instructions on burner or motor.
Boiler shutdown:
Do not drain boiler unless exposure to
freezing temperatures will occur.
Always keep manual fuel supply shut off if
burner is shut down for an extended period of
time.
a. Turn off switch at boiler and any external
switch to boiler.
b. Close fuel valves.
c. Turn off water feed valve.
d. Cover burner to protect from dust and
dampness.
4
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