Williams 1403622 User Manual

Williams 1403622

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Owner’s Manual

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Direct-Vent Wall Furnace

Model Numbers:

1403622; 1433622; 1453622; 2203622; 2233622;

2253622; 3003622; 3033622; 3053622

FOR USE WITH NATURAL GAS ONLY

Model Numbers:

1403621; 1433621; 1453621; 2203621; 2233621;

2253621; 3003621; 3033621; 3053621

FOR USE WITH PROPANE GAS ONLY

READ THIS OWNER’S MANUAL CAREFULLY BEFORE YOU

INSTALL YOUR NEW WILLIAMS WALL FURNACE.

– 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 or cell phone in

your building.

• Extinguish any open flame.

• Immediately call your gas supplier from

a neighbor's phone. Follow the gas

supplier's instructions.

• If you cannot reach your gas supplier,

call the fire department.

– 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 additional information, consult

a qualified Installer, service agency or the gas

supplier.

WARNING: Do not install this furnace (Natural or

L.P. Gas) in trailers or recreational vehicles.

WARNING: If the information in these

instructions is not followed exactly, a fire or

explosion may result causing property

damage, personal injury or loss of life.

Williams Furnace Co.  250 West Laurel Street  Colton, California 92324 U.S.A.

14,000 Btu/hr. 22,000 and 30,000

Btu/hr

.

Model

Questions and Answers:

F
fortegaAug 18, 2025
What to do if my Williams 1403622 Furnace won't shut off?
- F
  Frederick DuranAug 18, 2025
  If your furnace continues to run even after reaching the set temperature, there are several potential causes. First, the thermostat wiring may be defective, such as lead wires shorted together by a nail or staple. You can check this by removing the thermostat leads from the valve terminals. Also, the thermostat's location could be the issue. If it's on an outside wall or exposed to cold air, relocate it. The thermostat itself might be defective, so check its calibration or consider replacing it. Finally, dirt under the valve seat or a stuck-open valve can prevent the furnace from shutting off, in which case the valve should be replaced.
M
morgan69Aug 21, 2025
How to fix a pilot outage problem in Williams 1403622 Furnace?
- J
  james52Aug 21, 2025
  If you're experiencing pilot outages, first adjust the pilot flame, as it may be too low or blowing. Inspect the vent tube and air inlet tube. Ensure the pilot lighting door is closed properly. Also, the pilot orifice or aerating hole may be plugged; check for obstructions like spiders or webs. Additionally, check the control and pilot observation doors for broken or missing gaskets; clean and replace them if necessary.
B
Brandon KeyAug 25, 2025
What to do if the blower on my Williams 1403622 doesn't run?
- K
  Kevin BurnsAug 25, 2025
  If the blower isn't running, first ensure the fan switch is properly set to the desired fan speed. Also, check the bearings and add oil as instructed in the blower instructions.
J
Jennifer LawrenceAug 28, 2025
Why is my Williams 1403622 Furnace pilot lit but no gas to the main burner?
- S
  Samuel CruzAug 28, 2025
  If the pilot light is on but the main burner isn't igniting, first ensure the gas valve is turned to the 'ON' position and the thermostat is set to call for heat. A plugged burner orifice can also prevent gas flow, so check, clean, or replace it as needed. Inspect the thermostat wires for proper connection or breaks, and test the thermostat by jumping across the terminals on the valve. Also, the pilot generator may not be generating sufficient millivolts to open the valve, check the pilot flame and clean connections at the valve. If these steps don't resolve the issue, the valve itself may be defective and require replacement.
A
Angela BradleyAug 31, 2025
Why is my Williams Furnace not producing enough heat?
- J
  Joshua LloydAug 31, 2025
  If your furnace isn't producing enough heat, it might be too small for the space you're trying to heat; check the heat calculations to confirm. Also, the furnace may not be burning at its full rate. Check for low gas pressure and inspect the burner orifice for any obstructions.
C
Crystal ArroyoSep 4, 2025
Why does my Williams Furnace turn off before reaching temperature?
- C
  Carol RodriguezSep 4, 2025
  If your furnace shuts off before the room reaches the set temperature, the thermostat's location could be the problem. Ensure it's not in the path of warm air from the furnace, near a lamp, or above heat-generating electronics. Also, the thermostat itself may be defective, so check its calibration or replace it.
M
Mary CastroSep 6, 2025
Why does my Williams 1403622 burner turn on and off?
- S
  snyderwilliamSep 7, 2025
  If the burner turns on but then shuts off unexpectedly, check the vent tube and the air inlet tube to ensure they are properly installed according to the installation instructions. Make sure the joints are tight, both tubes are in place, and only the furnished tubes are used, without extending them beyond their original length. Also, the furnace may be overrated, so check for high pressure at the valve and verify the burner orifice.
L
ljonesSep 10, 2025
How do I fix a noisy blower in my Williams 1403622 Furnace?
- E
  Eugene TaylorSep 12, 2025
  A noisy blower can be caused by several issues. If the housing is rattling, try tightening the blower screws. A dirty blower wheel can also cause noise, so clean it thoroughly. If the blower wheel is bent, attempt to straighten it or replace it if necessary.

Williams 1403622 Specifications

General

Brand	Williams
Model	1403622
Category	Furnace
Language	English

Summary

Direct-Vent Wall Furnace Overview and Safety

Critical Safety Warnings

Highlights essential safety warnings regarding fire, explosion, and gas leaks.

General Safety Guidelines

Comprehensive safety rules for installation, operation, and maintenance.

Gas Leak Emergency Procedure

Step-by-step instructions for handling gas leaks.

Warranty and Introduction

Warranty Terms and Consumer Duties

Details warranty coverage, limitations, and consumer responsibilities.

Installation Procedures

Furnace Placement and Clearances

Guidance on selecting furnace location and required clearances.

Vent and Opening Preparation

Mounting and Component Installation

Thermostat and Cabinet Installation

Gas Supply, Piping, and Orifices

Furnace Operation

Operating Sequence and Pilot Lighting

Operating Instructions and Checks

Troubleshooting and Service Information

Furnace Symptoms and Corrective Actions

Provides a table of common furnace symptoms, causes, and solutions.

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