Louisville Tin and Stove 90N30A, 90N75A, 90N65A, 90N50A warranty Trouble Shooting Chart Main Burner

Page 15

TROUBLE SHOOTING CHART - MAIN BURNER

SYMPTOM

 

POSSIBLE CAUSES

 

CORRECTIVE ACTION

Flame too large

1.

Defective operator section of gas valve.

1.

Replace complete valve.

 

 

2.

Burner orifice too large.

2.

Check with local gas company for

 

 

 

 

proper orifice size and replace.

 

3.

If installed above 2,000 ft.

3.

Refer to Burner Orifice Section, Pg. 12.

Flame pops back

Too much primary air.

 

Adjust air shutter.

See Page 12.

Noisy Flame

1.

Too much primary air.

1.

Adjust air shutter.

See Page 12.

 

2.

Noisy pilot.

2.

Reduce pilot gas with adjusting screw marked

 

 

 

 

pilot on combination gas control valve. See

 

 

 

 

Page 12.

 

 

 

3.

Burr in orifice (if it whistles or

3.

Remove burr or replace orifice. (Do not

 

 

resonates).

 

enlarge orifices).

 

 

 

4.

Excessive gas input.

4.

See “Flame Too Large” above.

Yellow tip flame (some

1.

Too little primary air.

1.

Adjust air shutter.

See page 12.

yellow tipping on L.P.

2.

Clogged main burner ports.

2.

Clean main burner ports. (Do not enlarge ports).

gas is permissible)

3.

Clogged draft hood.

3.

Clean draft hood.

 

 

 

4.

Linted up air shutter.

4.

Check for dust or lint at air mixer opening and

 

 

 

 

around the shutter.

 

Floating flame

1.

Blocked venting.

1.

Clean flue passage ways to remove blockage.

 

2.

Insufficient primary air.

2.

Adjust air shutter to increase primary air supply.

Gas odor

1.

Chimney or vent obstruction.

1.

Clean chimney or vent - replace if necessary.

 

2.

Drafts around appliance.

2.

Eliminate drafts.

 

 

 

3.

Gas leak.

3.

See Page 1.

 

 

Delayed ignition

1.

Pilot flame too small.

1.

Check pilot orifice, close, increase pilot gas flow if

 

 

 

 

necessary by adjusting at combination control valve.

 

 

 

 

See Page 12.

 

 

 

2.

Burner ports clogged near pilot.

2.

Clean burner ports (Do not enlarge ports).

 

3.

Low gas pressure.

3.

Check gas supply pressure.

 

 

4.

Pilot decreases in size when main burners

4.

Supply piping is inadequately sized. Consult local

 

 

come on.

 

gas utility or competent installer.

 

5.

Air shutter open too far.

5.

Close air shutter to proper setting as outlined in

 

 

 

 

these instructions (slight yellow tipping is

 

 

 

 

allowable on L.P. gas).

 

 

6.

Drafts around appliance.

6.

Eliminate drafts.

 

 

 

7.

Bad venting.

7.

See “Venting”.

 

 

Failure to ignite

1.

Main gas off.

1.

Open all manual gas valves.

 

 

2.

Defective gas valve.

2.

Replace gas valve.

 

 

Condensation of water vapor 1.

Improper venting.

1.

See “Venting.

 

 

Burner won’t turn off

1.

Defective or sticking automatic valve.

1.

Clean or replace valve.

 

 

2.

Excessive gas pressure (The supply gas

2.

To correct this situation contact the utility

 

 

pressure must not exceed 1/2 psi or 14”

 

supplying the gas.

 

 

 

 

water column).

 

 

 

 

Incorrect gas input

1.

Gas input not checked.

1.

Recheck gas input.

 

 

2.

Clogged orifice.

2.

Check orifice for clogging.

If clogged, clean out the

 

 

 

 

hole carefully with a smooth wood toothpick. (Do

 

 

 

 

not in any way enlarge or distort it.

Not enough heat

1.

Appliance undersized

1.

This is especially true when a dwelling or room is

 

 

 

 

enlarged. Have the heat loss calculated and compare to

 

 

 

 

the appliance output (70% of input). Your gas company

 

 

 

 

or installer can supply you with this information. If

 

 

 

 

appliance is undersized, replace with correct size unit.

 

2.

Thermostat set too low.

2.

Setting of thermostat. See “Lighting and Shutting Down

 

 

 

 

Instructions”.

 

 

 

3.

Incorrect supply pressure.

3.

Check supply pressure as outlined above.

Too much heat

1.

Thermostat set too high.

1.

Lower setting of temp. dial.

See “Lighting and Shutting

 

 

 

 

Down Instructions”.

 

 

2.

Combination control valve sticks open.

2.

Replace combination control valve.

 

 

 

TROUBLE SHOOTING CHART - AUTOMATIC PILOT & VALVE

 

 

 

 

 

Burner won’t turn on

1.

Pilot flame too large or too small.

1.

Readjust pilot flame using adjustment screw marked

 

 

 

 

“Pilot” on combination control valve. See Page 10.

 

2.

Dirt in pilot orifice.

2.

Clean pilot orifice with air or solvent, do not ream.

 

3.

Defective automatic pilot section in

3.

Replace entire combination control valve.

 

 

combination control valve.

 

 

 

 

 

4.

Defective Thermocouple.

4.

Replace thermocouple.

 

 

5.

Defective combination control valve.

5.

Replace valve.

 

 

 

 

 

 

 

 

 

Page 15

Image 15
Contents What to do if YOU Smell GAS Millivolt Control System Natural GASIntroduction ContentsFloor Furnace Specifications Safety RulesInstallation Requirements Helpful Installation InformationFresh AIR for Combustion and Venting Floor Furnace LocationFurnace Setting the Floor FurnaceCutting the Floor Opening FloorConnecting the Vent Installing the Draft HoodSafe Unsafe Recommended GAS Supply and Piping GAS Pipe Sizes Capacity *NATURAL GASGAS Tubing and Pipe Sizes Capacity *L.P. GAS Additional L.P. GAS Requirements Connecting the GAS PipingGAS Valve TEE Ground Joint Union Manual Valve Supply Sediment TrapWire AS Indicated See Figure Thermostat InstallationWhat to do if YOU Smell GAS For Your Safety Read Before LightingBurner Orifice Adjusting the Pilot FlameAdjusting the Burner Vent SystemLimit Switch Optional OperationOption Maintenance Instructions To Clean BurnerService Record Symptom Possible Causes Corrective Action Trouble Shooting Chart Main Burner40 34 Burner Assembly for Burner Assembly forModels Included 90N30A 90N50A 90N65A 90N75A If YOU Smell GAS, DON’T Light IT If YOU CAN’T Light IT DON’T Fight ITThis is not AN Advertisement Table a Limited Warranty

90N50A, 90N30A, 90N65A, 90N75A specifications

Louisville Tin and Stove has established a reputation for quality and innovation in the heating and cooling industry with its line of products, particularly the 90N65A, 90N50A, 90N75A, and 90N30A models. Each of these units boasts distinctive features, technologies, and characteristics that cater to a variety of residential and commercial needs.

The 90N65A model stands out for its impressive energy efficiency, designed to operate at an efficiency rating of up to 95%. This model employs advanced condensing technology, which allows it to extract more heat from the combustion process, significantly reducing energy costs for users. Moreover, its variable speed blower promotes quiet operation while optimizing airflow, ensuring that spaces are comfortably heated or cooled without excessive noise.

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