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OWNER'S MANUAL
INSTALLATION INSTRUCTIONS
DIRECT VENT GRAVITY
WALL FURNACE
MODEL NUMBERS (natural gas)
DV14N22 / DV22N22 / DV30N22
MODEL NUMBERS (propane gas)
DV14P21 / DV22P21 / DV30P21
SAVE THIS MANUAL FOR FUTURE REFERENCE.
READ THIS OWNER'S MANUAL CAREFULLY BEFORE
YOU INSTALL YOUR NEW WILLIAMS WALL FURNACE.
WARNING: This Direct-Vent furnace is approved for
aftermarket manufactured home installations (once the
manufactured home is sold, installed and stationary) unless
prohibited by local codes. Not for manufactured home
manufacturer (factory) installation. Do not install any of these
furnaces (natural or propane gas) in trailers or recreational vehicles.
WARNING: This product can expose you to chemicals
including epichlorohydrin which is known to the State of California
to cause cancer and birth defects and/or other reproductive harm.
For information go to www.p65warnings.ca.gov
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 or, service agency.
250 West Laurel Street, Colton CA 92324
VISITE NUESTRA PÁGINA WEB PARA LA VERSIÓN EN ESPAÑOL DE ESTE MANUAL
www.williamscomfortprod.com
14,000
BTU/hr.
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.
- 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 the gas supplier, call the fire
department.
– Installation and service must be performed by a
qualified installer, service agency or the gas supplier.
•
www.williamscomfortprod.com
22,000 & 30,000 BTU/hr.
•
1-888-444-1212
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Table of Contents
Related Manuals for Williams DV14N22
Summary of Contents for Williams DV14N22
- Page 1 SAVE THIS MANUAL FOR FUTURE REFERENCE. BTU/hr. READ THIS OWNER’S MANUAL CAREFULLY BEFORE YOU INSTALL YOUR NEW WILLIAMS WALL FURNACE. 22,000 & 30,000 BTU/hr. 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.
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Page 2: Warranty
WARRANTY Some states do not allow limitation on how long an The manufacturer, Williams Furnace Co., warrants this wall furnace or implied warranty lasts, and some states do not allow the heater to the original purchaser under the following conditions:... -
Page 3: Table Of Contents
CONTENTS YOUR WILLIAMS WARRANTY INSTALLATION RECORD TABLE OF CONTENTS SAFETY RULES INTRODUCTION BASIC MATERIALS NEEDED BASIC TOOLS NEEDED OPTIONAL ACCESSORIES INSTALLING YOUR WALL FURNACE LOCATING YOUR WALL FURNACE THERMOSTAT INSTALLATION THERMOSTAT MOUNTING CABINET INSTALLATION GAS SUPPLY AND PIPING ORIFICE SIZES... -
Page 4: Safety Rules
SAFETY RULES 10. NEVER vent flue gases into another room, a fireplace WARNING: READ THESE RULES AND THE or any space inside a building. This could cause property INSTRUCTIONS CAREFULLY. FAILURE TO FOLLOW damage, bodily injury or death. THESE RULES AND INSTRUCTIONS COULD CAUSE A 11. -
Page 5: Introduction
INTRODUCTION Please read our instructions before you install and use your No electric power is required unless furnace is equipped with an furnace. This will help you obtain the full value from this furnace. It optional blower accessory. will also help you avoid any needless service costs if the problem Always consult your local heating or plumbing inspector, building is found within this instruction manual. -
Page 6: Materials Needed
INTRODUCTION Materials Needed Optional Accessories Pipe joint compound resistant to L.P. gases. Vent Extensions: For walls greater than 9 inches thick and up to 24 inches thick, use one of the following Vent Extension Kits: Caulking compound-silicone rubber with a temperature rating of 500°F. -
Page 7: Installing Your Wall Furnace
INSTALLING YOUR FURNACE Locating Your Wall Furnace HOT SPOTS COLD SPOTS Consider the following points before attempting to install the furnace. Concealed pipes/ducts Concealed pipes/ducts Fireplaces Stairwells (drafts) ALL MODELS Registers Doors (drafts) This is a direct-vent wall furnace. It must be installed Unheated rooms on other side of TV sets on an outside wall for proper venting of flue gases. - Page 8 INSTALLING YOUR FURNACE To avoid electrical shock, turn off all electrical circuits that pass FIGURE 3 through the wall where you are going to install the furnace. This furnace must be installed using only the vent tube, air inlet tube and vent cap assembly supplied by the manufacturer.
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Page 9: Thermostat Installation
WALL MOUNTING From the attic, feed the thermostat wire or a stiff wire 1. Use Williams thermostat kit 8967 or any millivolt thermostat. through the wall until even with thermostat location. 2. If an existing thermostat is being replaced and is in a... -
Page 10: Thermostat Mounting
INSTALLING YOUR FURNACE Route wire to the furnace leaving enough excess wire to FIGURE 9 make the connections at the gas valve. CABINET MOUNTING 1. Locate the knockout on the right side of the furnace to mount the thermostat. Remove the knockout by tapping it lightly with a screwdriver. -
Page 11: Gas Supply And Piping
Gas Supply and Piping FIGURE 10 The gas control valve is shipped with a sealed cover over the gas inlet tapping. Do not remove seal until you are ready to connect piping. WARNING: Danger of property damage, bodily injury or death. -
Page 12: Gas Piping
INSTALLING YOUR FURNACE FIGURE 12 CONVERSION KITS DESCRIPTION MODELS NATURAL GAS TO PROPANE GAS FOR DV14 SERIES 8939 NATURAL GAS TO PROPANE GAS FOR DV22 SERIES 8940 NATURAL GAS TO PROPANE GAS FOR DV30 SERIES 8941 PROPANE GAS TO NATURAL GAS FOR DV14 SERIES 8942 PROPANE GAS TO NATURAL GAS FOR DV22 SERIES 8943... -
Page 13: Installations In The State Of Massachusetts
CHECKING THE GAS PIPING Test all piping for leaks. When checking gas piping to the furnace with gas pressure at less than 1/2 PSI, shut off manual gas valve to the furnace. If the gas piping is to be checked with the pressure at or above 1/2 PSI, the furnace and manual shutoff FIGURE 14 valve must be disconnected during testing. -
Page 14: Operating Your Furnace
OPERATING YOUR FURNACE The furnace operates in the parallel to the gas line) before you can light your furnace. Your furnace is equipped with a 100% safety pilot, which will shut off the following sequence: gas valve in case the pilot is not burning or functioning properly. Make sure the pilot is adjusted properly and that the generator 1. -
Page 15: Operating Instructions
Operating Instructions 1. STOP! Read the safety information above. 2. Set the thermostat to lowest setting. 3. If applicable, tum off all electric power to the appliance. 4. Open the control access panel. 5. Push in the gas control knob slightly and turn it clockwise to “OFF”. -
Page 16: Start-Up Procedure
OPERATING YOUR FURNACE Start-Up Procedure To measure the input using the gas meter, proceed as follows: Start the furnace using the procedures in the section “Operating Your Furnace”. 1. Turn off the gas supply to all other appliances except the furnace. 2. -
Page 17: How To Care For Your Furnace
CARING FOR YOUR FURNACE FIGURE 16 FIGURE 16 from the combustion chamber. Be careful not to damage the control door gasket. 6. Clean all foreign materials from the top of the burner. 7. After cleaning, replace the control door and the burner assembly by reversing the above procedure. - Page 18 CARING FOR YOUR FURNACE FIGURE 17 WARNING: Danger of bodily injury or death. If equipped with accessory blower, turn off the electric power supply at the disconnect switch, fuse box or service panel before removing any access doors or service panels from unit. BLOWER ACCESSORY 2302 &...
- Page 19 DIRECT VENT GRAVITY WALL FURNACE...
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Page 20: Furnace Assembly Replacement Parts Dv14 Models
FURNACE ASSEMBLY REPLACEMENT PARTS DV14 MODELS MODEL NUMBERS REF. REPLACEMENT PART DESCRIPTION NATURAL DV14N22 PROPANE DV14P21 Face Panel 4309 4309 Combustion Chamber Shield 8A72 8A72 Combustion Chamber 6303 6303 Flue Tube Gasket (2 Req.) P147001/2 P147001/2 Inner Casing 8B62 8B62... -
Page 21: Control Assembly Replacement Parts Dv14 Models
CONTROL ASSEMBLY REPLACEMENT PARTS DV14 MODELS MODEL NUMBERS NATURAL PROPANE DV14N22 DV14P21 REF. REPLACEMENT PART DESCRIPTION DV14N22 DV14P21 Burner P168400 P168400 Control Door with P500677 Gasket 8A103 8A103 Gas Valve P295200A P295201A Manifold with P147200 Gasket P323659 P323659 Burner Orifice (Sea Level) - Page 22 BLOWER ACCESSORY REPLACEMENT 2303 KIT FOR MODELS DV14N22/DV14P21 KIT NUMBER REF. REPLACEMENT PART DESCRIPTION 2303 Back Plate 8A128 Wire P101000 Fan Blower Assembly 8B94 Blower Casing Assembly 8B93 Louver Assembly 8B90 Heat Sensor Switch P323392 Strain Relief P500158 Fan Switch...
- Page 23 EXPLODED VIEW & REPLACEMENT PARTS CHART DIRECT VENT GRAVITY WALL FURNACE...
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Page 24: Furnace Assembly Replacement Parts Dv22/Dv30 Models
FURNACE ASSEMBLY REPLACEMENT PARTS DV22/DV30 MODELS MODEL NUMBERS REF. NATURAL PROPANE NATURAL PROPANE REPLACEMENT PART DESCRIPTION DV22N22 DV22P21 DV30N22 DV30P21 Face Panel 4313 4313 4313 4313 Combustion Chamber Shield 6B149 6B149 6B149 6B149 Flue Tube Gasket (2 Req.) P147001 P147001 P147001 P147001 Flue Extension (Standard Maximum 9"... -
Page 25: Control Assembly Replacement Parts Dv22/Dv30 Models
CONTROL ASSEMBLY REPLACEMENT PARTS DV22/DV30 MODELS MODEL NUMBERS NATURAL PROPANE DV22N22 DV30N22 DV22P21 DV30P21 REF. REPLACEMENT PARTS DESCRIPTION DV22N22 DV22P21 DV30N22 DV30P21 Burner P168404 P168404 P168404 P168404 Control Door with P500677 Gasket 8A135 8A135 8A135 8A135 Gas Valve P295200A P295201A P295200A P295201A Manifold with P147200 Gasket... -
Page 26: Blower Accessory Replacement 2302 Kit For Dv22 / Dv30 Models
BLOWER ACCESSORY REPLACEMENT 2302 KIT FOR MODELS DV22/DV30 KIT NUMBER REF. REPLACEMENT PART DESCRIPTION 2302 Switch Box Bracket 6A24 Switch Box 6B33 Fan Switch (Pull Chain) P321017 Automatic Fan Switch P332490 Switch Box Cover 6A23 Motor Replacement Kit (Motor & Bracket) 6A94 Motor Support Bracket M118702... - Page 27 EXPLODED VIEW & REPLACEMENT PARTS CHART DIRECT VENT GRAVITY WALL FURNACE...
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Page 28: Troubleshooting Your Furnace
TROUBLESHOOTING YOUR FURNACE For qualified service technicians. CORRECTIVE ACTION ISSUE POSSIBLE CAUSE(S) Check the pilot flame. It must impinge on the generator. Be sure the Pilot will not stay lit after Generator producing generator is fully inserted in the bracket. Make sure the pilot lighting carefully following lighting insufficient millivolts. - Page 29 CORRECTIVE ACTION ISSUE POSSIBLE CAUSE(S) Check the thermostat calibration or replace. Defective thermostat. Replace the valve. Dirt under the valve seat or valve stuck open. Pilot outage problem. Pilot flame may be low or Adjust pilot flame. Check vent tube and air inlet tube. Be sure blowing (High), causing the pilot lighting door is closed.
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Page 30: Hints And Information
PART DESCRIPTION All parts listed herein may be ordered from your equipment supplier. The Model Number of your Williams wall furnace will be found on the nameplate near gas valve, inside control compartment. WHAT TO DO IF YOU SMELL GAS •... -
Page 31: Service Record
SERVICE RECORD DATE MAINTENANCE PERFORMED COMPONENTS REQUIRED DIRECT VENT GRAVITY WALL FURNACE... - Page 32 www.williamscomfortprod.com | 888-444-1212 | 250 West Laurel Street, Colton CA 92324 USA Subject to change without notice | © 2025 P324047_A 04/25...
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