Weil-McLain WGO Manuel utilisateur

WGO, WTGO and SGO-WWGO, WTGO and SGO-W

WGO, WTGO and SGO-W

Series 3Series 3

Series 3 Oil-FirOil-Fir

Oil-FirOil-Fir

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ater Boilersater Boilers

ater Boilers

Part No. 550-141-828/1202Part No. 550-141-828/1202

Part No. 550-141-828/1202

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MaintenanceMaintenance

Maintenance

and Serviceand Service

and Service

GuideGuide

Guide

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.

Read This Page First

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:

Have boiler and burner installed by a qualified installer.

Have boiler and burner serviced annually by a qualified service

technician.

Review and understand start-up and routine maintenance

procedures with qualified service technician.

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:

Annually service boiler and burner to assure proper operation. See page 8

for service record.

Review and explain start-up and routine maintenance procedures with

homeowner.

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ForYour Safety

Follow instructions below to

prevent severe personal injury, death or substan-

tial property damage:

Do not use 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 in combustion chamber,

when unit is full of vapor, or when combus-

tion chamber is very hot.

Do not start burner unless collector hood, flue

cap, jacket cap, breeching and burner mount-

ing door are secured in place.

Never burn garbage or paper in the boiler.

Never leave combustible material around

boiler.

DO NOT TAMPER WITH UNIT OR CONTROLS.

Always follow specific instructions when

starting up boiler or performing routine

maintenance or service.

DANGER

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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 recom-

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.

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.

When using antifreeze:

- Use antifreeze especially made for

hydronic systems. Inhibited propylene

glycol is recommended.

Do not use automotive,

ethylene glycol, undiluted or petroleum-

based antifreeze. Severe personal injury,

death or substantial property damage can

result.

- 50% solution provides protection to about

-300F.

- 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 instruc-

tions.

Do not add cold water to hot boiler. Thermal

shock can cause sections to crack.

CAUTION

Follow instructions below to

prevent severe personal injury, death or substan-

tial property damage:

To avoid electric shock, disconnect electrical

supply to burner service switch and additional

external switches before performing service.

To avoid severe burns, allow boiler to cool

before performing service.

Do not block flow of combustion or ventilation

air to boiler.

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

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WARNING

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Routine Maintenance Schedule

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.

Daily during heating season:

Check that boiler area is free from combusti-

ble 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.

End of heating season:

If tankless heater is installed, boiler will

continue to operate. Check for the following:

- 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.

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Start-up

WGO/WTGO (see Figure 1):

1. If burner does not fire, check for:

Service switch on boiler or additional

switches turned off.

Fuses or breaker switch tripped.

Thermostat set below room temperature.

Fuel valves turned off.

Not enough oil in tank to supply burner.

DANGER

WGO and WTGO Boilers

Figure 1

2. Correct problems found in step #1. If burner

does not fire, press reset button on burner

primary control only once. Repeated presses

will deposit oil in combustion chamber.

Burner must never be fired

when oil is in combustion chamber. Immedi-

atelycall qualified service technician.

3. If burner still does not fire, call qualified

service technician.

Service

Switch on

Boiler

Burner Primary

Control

Reset Button on

Burner Primary

Control

Limit Control

(on WGO)

Combination

Limit Control and

Tankless Heater

Control

(on WTGO)

Located in tankless

heater plate

Circulator

Temperature -

Pressure Gauge

Burner

Disconnect

Plug

Water

Relief Valve

Start-up

SGO-W Boiler

Figure 2

2. Correct problems found in step #1. If burner

does not fire, press reset button on burner

primary control only once. Repeated presses

will deposit oil in combustion chamber.

Burner must never be fired

when oil is in combustion chamber. Immedi-

ately call qualified service technician.

3. If burner still does not fire, call qualified

service technician.

SGO-W (see Figure 2):

1. If burner does not fire, check for:

Service switch on boiler or additional

switches turned off.

Fuses or breaker switch tripped.

Thermostat set below room temperature.

Fuel valves turned off.

Not enough oil in tank to supply burner.

DANGER

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Circulator

Limit Control

Reset Button on

Burner Primary

Control

Burner Primary

Control

Temperature -

Pressure Gauge

Tankless Heater

Control

Located in

tankless heater plate

Burner

Disconnect

Plug

Service

Switch

on Boiler

Water Relief Valve

(on back of boiler)

The problems and corrections above represent common situations that can occur.

There may be others not listed above. It is important always to contact a qualified service techni-

cian if you have any questions about the operation of your boiler or system.

COMMON PROBLEMS COMMON CAUSES POSSIBLE CORRECTIONS

Rapid cycling - burner turns on and off

frequently. Thermostat installed where

drafts or heat affect reading. Locate thermostat on inner wall away

from heat sources or cool drafts.

Heat anticipator in

thermostat adjusted

incorrectly.

Adjust heat anticipator to match current

draw. Refer to boiler wiring diagram.

Incorrect limit setting. Have qualified service technician

increase limit setting to decrease cycling.

Maximum setting 220 deg. F.

Need to frequently add makeup water. Leaks in boiler or piping. Have qualified service technician repair

leaks at once to avoid constant use of

makeup water.

Popping or percolating noise heard in boiler. Mineral deposits in sections

due to constant use of

makeup water, or incorrect

pH.

Have qualified service technician de-lime

boiler, repair leaks at once to avoid

constant use of makeup water and check

pH (between 7.0 and 8.5).

Black water condition. Oxygen corrosion due to

leaks in piping. Have qualified service technician repair

leaks at once to avoid constant use of

makeup water and check pH (between

7.0 and 8.5).

Frequent release of water through relief

valve. Expansion tank sized too

small or water-logged. Have qualified service technician check

expansion tank operation.

Metal flakes found in flueway. Contaminated combustion

air supply. Remove sources of hydrocarbons in or

near boiler area. (Bleaches, cleaners,

chemicals, sprays, fabric softeners, paint

remover, etc.)

Condensation of

combustion gases. Have qualified service technician check

boiler operation.

Some radiators or baseboard units do not

heat or are noisy. Air in system. Bleed air from system through air vents

in radiators or baseboard units.

Low system pressure. Have qualified service technician check

for leaks in boiler or piping at once.

High limit set too low. Have qualified service technican adjust

limit to higher setting.

Domestic water from tankless heater is hot

then suddenly turns cold.

Domestic water from tankless heater is

always lukewarm.

Mineral deposits insulate

internal waterways of

heater.

Have qualified service technician delime

or replace coil.

Boiler stop-leak compound

has been added to boiler

water and is insulating

outside of coil.

Have qualified service technician remove

and clean coil AND drain and flush

boiler to remove stop-leak.

Incorrect mixing valve

setting for tankless heater. Have quaified service technican adjust

mixing valve setting.

Domestic flow rate too high. Have qualified service technician install

flow check valve set to rating of tankless

heater.

Incorrect setting on tankless

heater control. Have qualified service technician raise

tankless control setting. Adjust

differential on tankless control to lower

setting.

The procedures and information on pages 7 through 11 are

intended only for a qualified service technician who has the necessary

equipment to inspect and adjust boiler and burner. A homeowner should

never attempt these procedures. Qualified service technician must read

pages 2 and 3 before proceeding.

Annual Service Check List

Any parts of the boiler furnished by Weil-McLain must be replaced by parts listed in

Weil-McLain Boiler and Repair Parts Book.

Annual Service Call Check List

(follow in order listed below)

EComments

1Check that boiler area is free from

combustible materials, gasoline and other

flammable vapors and liquids.

2Check for and remove any obstruction to

combustion and ventilation air flow to boiler.

3Check breeching and chimney or vent for

obstructions, damage, etc. Repair or replace

as necessary.

4Clean boiler flueways. See page 9.

5Perform service on relief valve and circulator.

See page 11.

6Check boiler and piping for leaks and repair if

found. Check for leaks at tankless heater

plate. Tighten nuts only if leaks are found (for

WTGO torque to 20-25 ft.lbs.).

7Inspect and adjust burner. See burner manual

and:

- change nozzle.

- check ignition electrode settings.

- clean blower housing and wheel.

- make sure blower wheel turns freely.

- oil burner motor if required.

- clean air inlet.

- clean or change fuel filter and strainer.

8Make sure boiler is filled with water.

9Start unit and verify combustion settings with

combustion test equipment.

See page 10.

10 Verify operation of all controls on boiler. See

page 11.

Cleaning Boiler Flueways

Figure 3

Thoroughly clean flueways

between all pins at all angles.

Start on top of boiler,

finish from the bottom.

Detailed Service Procedures

Cleaning boiler flueways:

Make sure all electrical connections

to boiler are turned off and wait until boiler is

warm, not hot, before cleaning. Failure to do so

will result in severe personal injury, death or

substantial property damage.

1. Top flue boilers -remove breeching and jacket

top panel.

Rear flue boilers - remove jacket top panel.

2. Remove flue collector hood, saving hardware

for reassembly.

3. Shut off oil valves. Arrange drip pans under

the areas of oil piping that will be discon-

nected. Disconnect oil line at burner so that

you can swing open the door completely.

4. Line combustion chamber floor with news-

paper to catch any soot that will be loosened

in the cleaning process.

5. Starting at the top of the boiler, use a wire

flue brush to thoroughly clean between all

pins at all angles. Be careful not to damage

side walls of rear refractory.

6. Move to the bottom of the flueways and clean

up between the sections to reach pins left

uncleaned in step #5.

DANGER 7. Once the flueways are cleaned, carefully

remove the paper from the floor of the

combustion chamber.

8. Verify sealing rope around flue area is intact.

Visually check condition and position of

insulation in combustion chamber floor,

and the refractories at the rear of boiler and

in the burner mounting door. Replace any

parts as necessary.

9. Close burner mounting door and tighten nut

securely. Place flue collector hood on top of

boiler. Secure with hardware from step #2.

Maintain a gas-tight seal to

avoid possible flue gas leakage and carbon

monoxide emissions, which can lead to severe

personal injury or death.

10. Check breeching for sooting and clean if

necessary. Install jacket top panel and

breeching.

11. Reconnect oil line and all electrical connec-

tions.

Fill the system:

1. Close manual and automatic air vents and

drain cock.

2. Fill to correct system pressure. Correct pres-

sure 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 recom-

mended.

Failure to maintain recom-

mended pH level can cause section failure and

leaks.

3. Open automatic air vent one turn.

4. 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.

NOTICE

Detailed Service Procedures

DANGER

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To place in operation:

Follow information below to prevent

severe personal injury, death or substantial prop-

erty damage:

Do not use 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 in combustion chamber,

when unit is full of vapor, or when combus-

tion chamber is very hot.

Do not start burner unless collector hood, flue

cap, jacket cap, breeching and burner mount-

ing door are secured in place.

Never burn garbage or paper in the boiler.

Never leave combustible material around

boiler.

1. Verify boiler is filled with water.

2. Open burner door and verify rear target wall,

floor and burner door insulations are in

proper condition and position.

3. Verify burner mounting door is closed and

bolted tightly and burner plug is connected.

4. Refer to burner manual for burner start-up,

adjustment and check-out procedures.

Factory burner adjustment and settings may

not be suitable for specific job conditions.

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.

5. Check boiler and system piping for leaks.

6. Inspect breeching and venting for proper

operation.

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