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Williams 0656542.9 - User Manual

Williams 0656542.9
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Owner’s Manual Save this manual for future reference.
1
Unvented room heaters are for installation in SINGLE FAMILY
TYPE DETACHED RESIDENCES ONLY, and the installation is
limited to ONE (1) unit per residence. Unvented room heaters are
only to be used as supplementary heat and NOT AS PRINCIPAL
SOURCE OF HEAT for the room in which the unit is installed.
Unvented room heaters are for installation in rooms having space
which shall limit the appliance input to a maximum of "20 BTUH"
per cubic foot of room space. Unvented room heaters are NOT
TO BE USED IN BEDROOMS, MOBILE HOMES, TRAILERS
AND RECREATIONAL VEHICLES.
EXCEPTION: If local codes permit, models 0656542.9 and
0656541.9 may be used in a bathroom, bedroom or mobile
home. Models 1056511.9, 1056512.9, 1056541.9 and
1056542.9 may be used in a bedroom or mobile home
(check local codes prior to installation).
In the Canadian provinces of British Columbia and Manitoba,
unvented heaters shall be limited to those having INPUT
RATINGS OF UP TO 25,000 BTU PER HOUR MAXIMUM.
Unvented room heaters are NOT FOR COMMERCIAL OR
INDUSTRIAL USE.
This is an unvented gas-fired heater. It uses air (oxygen) from the
room in which it is installed. Provisions for adequate combustion
and ventilation air must be provided. Refer to page 7.
Blue Flame Unvented
Gas Heater
Model Numbers:
0656542.9; 1056512.9; 1056542.9, 2056512.9; 3056512.9
FOR USE WITH NATURAL GAS ONLY
Model Numbers:
0656541.9; 1056511.9; 1056541.9, 2056511.9; 3056511.9
FOR USE WITH PROPANE GAS ONLY
READ THIS INSTRUCTION MANUAL CAREFULLY BEFORE
YOU INSTALL YOUR NEW WILLIAMS WALL HEATER.
– Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any
other appliance.
– What to do if you smell gas:
• Open all windows.
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use
any phone in your building.
• Extinguish any open flame.
• Immediately call your gas supplier from a
neighbor’s phone. Follow gas supplier’s
instructions; call the fire department.
– If you cannot, installation and service must be
performed by a qualified installer, service
agency or the gas supplier.
WARNING: Improper installation, adjustment,
alteration, service or maintenance can cause injury
or property damage. Refer to this manual. For
assistance or for additional information consult a
qualified installer, service agency or the gas
supplier.
WARNING: Do not install any of these heaters
(Natural or L.P. Gas) in mobile homes, trailers or
recreational vehicles.
30,000
Btu/hr. Model
WARNING: If the information in this manual is
not followed exactly, a fire or explosion may
result causing property damage, personal
injury or loss of life.
6,000 and 10,000
Btu/hr. Model
Williams Furnace Co. 250 West Laurel Street Colton, California 92324 U.S.A.
20,000
Btu/hr. Model
Installation must conform
to local codes. ln the
absence of local codes,
installation must conform
with the current:
National Fuel Gas Code
ANSI Z223.1
and
ANSI z21.11.2

Table of Contents

Questions and Answers

  • J
    Jeffery BrooksAug 16, 2025
    What to do if the ODS pilot lights but does not remain lighted on my Williams 0656542.9?
    • D
      Dana FloresAug 16, 2025
      If the ODS pilot lights but doesn't stay lit when you release the control knob on your Williams Gas Heater, ensure the control knob is fully pressed in and held for 30 seconds after the pilot lights. Wait one minute for the safety interlock system to reset, then repeat the ignition operation. Also, make sure the manual shutoff valve is fully open and the thermocouple connection is snug at the control valve, tightened an additional 1/4 turn. A dirty or clogged pilot can also cause this issue; clean the pilot or replace the pilot assembly. In some cases, the thermocouple or control valve may be damaged, requiring replacement of the ODS pilot assembly or the valve itself. Low gas pressure may also be the cause, in which case you should contact your local gas company.
  • R
    Ryan LandryAug 19, 2025
    Why is there no spark at the ODS pilot when I press the igniter button on my Williams 0656542.9 Gas Heater?
    • E
      Edward MilesAug 19, 2025
      If there's no spark at the ODS pilot when you press the igniter button on your Williams Gas Heater, several issues could be the cause. The igniter electrode might be positioned wrong or broken, in which case you should replace the ODS pilot assembly. Ensure the igniter electrode is connected to the igniter cable; reconnect it if necessary. Check if the igniter cable is pinched or wet; free it if pinched and keep it dry. Make sure the piezo igniter is securely pressed to the valve inside the heater cabinet top. A broken igniter cable (replace on thermostat models, or replace the valve on manual models) or a bad piezo igniter (replace on thermostat models, or replace the valve on manual models) could also be the problem.
  • K
    kellysarahAug 22, 2025
    What to do if there's a spark at the ODS pilot but no ignition on my Williams 0656542.9?
    • J
      Jacob HaasAug 22, 2025
      If you see a spark at the ODS pilot but the Williams Gas Heater doesn't ignite, first ensure the gas supply is turned on and the manual shutoff valve is open. Check that the control knob is in the PILOT position and pressed in while in that position. If there's air in the gas lines from a recent installation, hold down the control knob and repeat the ignition process until the air is removed. Also, the ODS pilot might be clogged, requiring cleaning or replacement of the ODS pilot assembly. Finally, the gas regulator setting may be incorrect, necessitating replacement of the gas regulator.
  • S
    stewartchristopherAug 25, 2025
    Why is my Williams 0656542.9 burner backfiring during combustion?
    • M
      Mr. Paul KentAug 26, 2025
      Burner backfiring during combustion in your Williams Gas Heater can occur if the burner orifice is clogged or damaged; clean the burner or replace the burner orifice. A damaged burner or a defective gas regulator could also be the cause, requiring replacement.
  • J
    Joshua GarciaAug 28, 2025
    Why is the burner on my Williams Gas Heater not igniting when the pilot is lit?
    • S
      Shane ThompsonAug 28, 2025
      If the pilot is lit but the burner doesn't ignite on your Williams Gas Heater, the burner orifice might be clogged, so clean or replace it. Alternatively, the inlet gas pressure could be too low, in which case you should contact your local gas company.
  • C
    Connor RussoAug 31, 2025
    Why does my Williams 0656542.9 have a yellow flame during burner combustion?
    • G
      Gregory ReyesAug 31, 2025
      A yellow flame during burner combustion in your Williams Gas Heater indicates that there isn't enough air. Check the burner for dirt and clean it. A defective gas regulator could also be the cause, so consider replacing it.
  • M
    Miss Ashley Miller MDSep 3, 2025
    Why is there a delayed ignition of the burner in my Williams 0656542.9?
    • W
      Walter GuzmanSep 3, 2025
      Delayed ignition of the burner in your Williams Gas Heater can be due to low manifold pressure. Contact your local gas company or replace the regulator. Another cause could be a clogged burner orifice, which requires cleaning.
  • D
    Dominique LawrenceSep 6, 2025
    Why does my Williams 0656542.9 produce unwanted odors?
    • T
      Troy BeckerSep 6, 2025
      Unwanted odors from your Williams Gas Heater can arise if the heater is burning vapors from paint, hair spray, glue, or similar products. Ventilate the room and avoid using these products while the heater is on. A gas leak could also be the source of the odor; locate and correct any leaks.
  • M
    meyerbryanSep 9, 2025
    Why does my Williams 0656542.9 Gas Heater produce a clicking or ticking noise?
    • S
      Scott OnealSep 9, 2025
      A clicking or ticking noise from your Williams Gas Heater just after the burner is lit or shut off is often due to metal expanding while heating or contracting while cooling. This is common in most heaters. If the noise is excessive, contact a qualified service technician.
  • M
    Maureen McculloughSep 12, 2025
    Why does my Williams Gas Heater have a slight smoke or odor during initial operation?
    • S
      Steven GambleSep 12, 2025
      Slight smoke or odor during the initial operation of your Williams Gas Heater is likely due to residues from manufacturing processes. This problem should stop after a few hours of operation.

Williams 0656542.9 Specifications

General IconGeneral
BrandWilliams
Model0656542.9
CategoryGas Heater
LanguageEnglish

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