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UNVENTED (VENT-FREE) GAS LOG HEATER
OWNER'S OPERATION AND INSTALLATION MANUAL
VARIAbLE MANUALLy-CONTROLLED MODELS
VUL18NV, VUL18PV, VUL24NV, VUL24PV,
VUL30NV, VUL30PV, VUL36NV AND VUL36PV
Also Design-Certified As Vented Decorative Appliances
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.
— 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
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any
phone in your building.
• 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 quali-
fied installer, service agency or the gas supplier.
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.
For more information, visit www.desatech.com
18", 24", 30" AND 36"
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Table of Contents
Troubleshooting
Related Manuals for Desa VUL18NV
Summary of Contents for Desa VUL18NV
- Page 1 UNVENTED (VENT-FREE) GAS LOG HEATER OWNER’S OPERATION AND INSTALLATION MANUAL 18", 24", 30" AND 36" VARIAbLE MANUALLy-CONTROLLED MODELS VUL18NV, VUL18PV, VUL24NV, VUL24PV, VUL30NV, VUL30PV, VUL36NV AND VUL36PV Also Design-Certified As Vented Decorative Appliances 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.
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Page 2: Table Of Contents
TAbLE OF CONTENTS Safety ..............2 Cleaning and Maintenance ........ 20 Product Identification ........... 5 Troubleshooting ..........21 Local Codes............5 Specifications ............ 25 Unpacking............5 Service Hints ............. 25 Product Features ..........5 Technical Service..........25 Air For Combustion and Ventilation ..... 6 Replacement Parts .......... - Page 3 SAFETy Continued WARNING: This product con- WARNING: Do not allow fans tains and/or generates chemicals to blow directly into the fireplace. known to the state of California Avoid any drafts that alter burner to cause cancer or birth defects flame patterns. Ceiling fans can or other reproductive harm.
- Page 4 SAFETy Continued 1. This appliance is only for use with the type 8. To prevent the creation of soot, follow the of gas indicated on the rating plate. This instructions in Cleaning and Maintenance, appliance is not convertible for use with page 20.
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Page 5: Product Identification
3. Check heater for any shipping damage. If heater is damaged call DESA Heating, LLC 1. Remove logs and heater base assembly from carton. at 1-866-672-6040 for replacement parts before returning to dealer. -
Page 6: Air For Combustion And Ventilation
AIR FOR COMbUSTION AND VENTILATION Unusually tight construction is defined as WARNING: This heater shall construction where: not be installed in a room or space a. walls and ceilings exposed to the out- unless the required volume of in- side atmosphere have a continuous door combustion air is provided water vapor retarder with a rating of one perm (6 x 10... - Page 7 AIR FOR COMbUSTION AND VENTILATION Continued 1. Determine the volume of the space (length B. Vent room directly to the outdoors. See Ventilation Air From Outdoors, page 8. x width x height). C. Install a lower Btu/Hr fireplace, if lower Btu/Hr Length x Width x Height =__________cu.
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Page 8: Installation
AIR FOR COMbUSTION AND VENTILATION Continued Ventilation Air From Outdoors Provide extra fresh air by using ventilation Ventilated Outlet grills or ducts. You must provide two perma- Attic nent openings: one within 12" of the ceiling Outlet and one within 12" of the floor. Connect these To Attic items directly to the outdoors or spaces open to the outdoors. - Page 9 INSTALLATION Continued MINIMUM FIREPLACE CLEARANCE TO CAUTION: This heater cre- COMBUSTIBLE MATERIALS ates warm air currents. These Side Wall 16", Ceiling 42", Floor 5", currents move heat to wall sur- Front 36" faces next to heater. Installing LOG SIZING REQUIREMENTS heater next to vinyl or cloth wall Minimum Firebox Size coverings or operating heater...
- Page 10 INSTALLATION Continued Noncombustible NOTICE: Manual control heaters Material Requirements for may be used as a vented product. Distance (A) Safe Installation If so, you must always run heater 12" or more Noncombustible mate- with chimney flue damper open. rial OK. If running heater with damper Between 8"...
- Page 11 INSTALLATION Continued Mantel Shelf 12" NOTICE: Surface temperatures 10" Underside of of adjacent walls and mantels be- Mantel Shelf 8" come hot during operation. Walls 6" 1 /2 " All minimum and mantels above the firebox distances are in inches Minimum may become hot to the touch.
- Page 12 INSTALLATION Continued INSTALLING DAMPER CLAMP Area of Various Standard ACCESSORY FOR VENTED Round Flues Diameter Area OPERATION 5" 20 sq. inches Note: When used as a vented heater, ap- 6" 29 sq. inches pliance must be installed only in a solid-fuel 7"...
- Page 13 INSTALLATION Continued 1. Apply pipe joint sealant lightly to male WARNING: A qualified service threads of gas fitting (provided). Connect approved flexible gas hose to gas regula- person must connect heater to gas tor of heater (see Figure 11). supply. Follow all local codes. IMPORTANT: Hold gas regulator with wrench when connecting flexible gas hose.
- Page 14 INSTALLATION Continued Propane/LP External CAUTION: Use only new, Supply Tank Regulator black iron or steel pipe. Inter- with Vent nally-tinned copper tubing may Pointing Down be used in certain areas. Check your local codes. Use pipe of 1/2" diameter or greater to allow proper gas volume to heater.
- Page 15 INSTALLATION Continued 3. Check all joints from gas meter to equip- CAUTION: Make sure exter- ment shutoff valve for natural gas or nal regulator has been installed propane/LP supply to equipment shutoff valve for propane/LP (see Figure 16 or 17). between propane/LP supply Apply noncorrosive leak detection fluid to and heater.
- Page 16 INSTALLATION Continued INSTALLING LOGS 5. Place middle right log over front right and bottom logs as shown in Figure 20. Be sure hole in middle right log seats over WARNING: Failure to posi- pin in bottom log. tion the parts in accordance 6.
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Page 17: Operation
INSTALLATION Continued 8. For VUL36NV/PV models, position left and right control cover logs as shown in Figure 21. These may be placed as de- sired to hide controls. Do not place these logs on heater base or on other logs. Left Small Bracket Front Log... - Page 18 OPERATION Continued 7. Keep control knob pressed in for 30 sec- NOTICE: During initial operation onds after lighting pilot. After 30 seconds, of new heater, burning logs will release control knob. give off a paper-burning smell. • If control knob does not pop out when Orange flame will also be pres- released, turn off gas supply and contact a qualified service person or gas supplier...
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Page 19: Inspecting Burners
OPERATION Continued TO TURN OFF GAS MANUAL LIGHTING PROCEDURE TO APPLIANCE 1. Press in and turn control knob clockwise 1. Follow steps 1 through 5 under Lighting Instructions, page 18. to the HI position. 2. Press control knob and light pilot with 2. -
Page 20: Cleaning And Maintenance
CLEANING AND MAINTENANCE 4. Check injector holder located at the end of WARNING: Turn off heater the burner tube again. Remove any large particles of dust, dirt, lint or pet hair with and let cool before cleaning. a soft cloth or vacuum cleaner nozzle. 5. -
Page 21: Troubleshooting
TROUbLESHOOTING WARNING: Turn off heater and let cool before servicing. Only a qualified service person should service and repair heater. CAUTION: Never use a wire, needle or similar object to clean ODS/pilot. This can damage ODS/pilot unit. Note: All troubleshooting items are listed in order of operation. OBSERVED PROBLEM POSSIBLE CAUSE REMEDY... -
Page 22: Cleaning And Maintenance
TROUbLESHOOTING Continued OBSERVED PROBLEM POSSIBLE CAUSE REMEDY ODS/pilot lights but flame 1. Control knob not fully 1. Press in control knob fully goes out when control knob pressed in is released 2. Control knob not pressed in 2. Wait one minute for safety long enough interlock system to reset. -
Page 23: Troubleshooting
TROUbLESHOOTING Continued OBSERVED PROBLEM POSSIBLE CAUSE REMEDY Slight smoke or odor during 1. Not enough air 1. Check burner(s) for dirt initial operation and debris. If found, clean burner(s) (see Cleaning and Maintenance, page 20) 2. Gas regulator defective 2. Replace gas regulator Yellow flame in front burner 1. - Page 24 TROUbLESHOOTING Continued WARNING: If you smell gas • Shut off gas supply. • Do not try to light any appliance. • Do not touch any electrical switch; do not use any phone in your building. • Immediately call your gas supplier from a neighbor’s phone. Fol- low the gas supplier’s instructions.
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Page 25: Specifications
• propane/LP gas supply may be low serial numbers of your heater ready. You may feel your gas pressure is too low. If You can also visit DESA Heating Products’ so, contact your local propane/LP or natural technical services web site at gas supplier. -
Page 26: Parts
PARTS MODELS VUL18NV, VUL18PV, VUL24NV, VUL24PV, VUL30NV, VUL30PV, VUL36NV, VUL36PV www.desatech.com 119677-01G... - Page 27 PARTS This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 25 of this manual. NO. PART NO. DESCRIPTION QTY. Ramp Burner Assembly • • • • • • 123651-01 Electronic Ignitor •...
- Page 28 PARTS This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 25 of this manual. PART NUMBER VUL18NV VUL24NV VUL30NV VUL18PV VUL24PV VUL30PV DESCRIPTION 121699-05 121699-11 121699-17 Front Right Log...
- Page 29 PARTS MODELS VUL36NV AND VUL36PV LOG SET This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 25 of this manual. PART NO. DESCRIPTION 121699-07 Bottom Log 121699-14 Middle Right Log 121699-15 Middle Left Log 121699-20 Front Left Log...
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Page 30: Accessories
FB32C (CIRCULATING), FB32NC Purchase these heater accessories from your local dealer. If they can not supply these (NON-CIRCULATING) SERIES accessories, call DESA Heating Products at FIREBOXES 1-866-672-6040 for referral information. You For 18" and 24" log models. can also write to the address listed on the back page of this manual. - Page 31 NOTES _____________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ _____________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ _____________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ 119677-01G www.desatech.com...
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Page 32: Warranty
This is DESA Heating, LLC’s exclusive warranty, and to the full extent allowed by law; this express warranty excludes any and all other warranties, express or implied, written or verbal and limits the duration of any and all implied warranties, including warranties of merchantability and fitness for a particular purpose to four (4) years on new products and 30 days on factory reconditioned products from the date of first purchase.
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