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UNVENTED (VENT-FREE) GAS LOG HEATER
OWNER'S OPERATION AND INSTALLATION MANUAL
Also Design-Certified
As Vented Decorative
Appliances
18" AND 24" VARIAbLE MANUAL CONTROL MODELS
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.
HDL18(N,P) AND HDL24(N,P)
For more information, visit www.desatech.com
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Summary of Contents for Desa HDL18N
- Page 1 UNVENTED (VENT-FREE) GAS LOG HEATER OWNER’S OPERATION AND INSTALLATION MANUAL Also Design-Certified As Vented Decorative Appliances 18" AND 24" VARIAbLE MANUAL CONTROL MODELS HDL18(N,P) AND HDL24(N,P) 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 Troubleshooting ..........20 Product Identification ........... 5 Parts ..............24 Local Codes............5 Specifications ............ 26 Unpacking............5 Replacement Parts ..........26 Product Features ..........5 Technical Service..........26 Air For Combustion and Ventilation ..... 6 Service Hints ............. - Page 3 SAFETy Continued WARNING: Do not use a WARNING: This product blower insert, heat exchanger contains and/or generates insert or other accessory not ap- chemicals known to the State proved for use with this heater. of California to cause cancer or birth defects or other reproduc- tive harm.
- Page 4 SAFETy Continued 1. This appliance is only for use with the type 11. Before using furniture polish, wax, carpet of gas indicated on the rating plate. This cleaner or similar products, turn heater off. If appliance is not convertible for use with heated, the vapors from these products may other gases.
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Page 5: Product Identification
3. Check heater for any shipping damage. If information. heater is damaged call DESA Heating, LLC at 1-866-672-6040 for replacement parts 1. Remove logs and heater base assembly 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 (6x10... - Page 7 AIR FOR COMbUSTION AND VENTILATION Continued 1. Determine the volume of the space (length room or add ventilation grills between rooms. See Ventilation Air From Inside Building. x width x height). B. Vent room directly to the outdoors. See Length x Width x Height =__________cu. ft. Ventilation Air From Outdoors, page 8.
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Page 8: Installation
AIR FOR COMbUSTION AND VENTILATION Continued Ventilation Air From Outdoors NOTICE: State or local codes may Provide extra fresh air by using ventilation only allow operation of this appli- grills or ducts. You must provide two perma- ance in a vented configuration. nent openings: one within 12"... - Page 9 INSTALLATION Continued LOG SIZING REQUIREMENTS CAUTION: This heater cre- Minimum Firebox Size ates warm air currents. These Height 17", Depth 13", Front Width 28", currents move heat to wall sur- Rear Width* 20.5" faces next to heater. Installing *Measured at 13" Depth heater next to vinyl or cloth wall Carefully follow the instructions below.
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Page 10: Mantel Clearances
INSTALLATION Continued MINIMUM NONCOMBUSTIBLE If Using Mantel MATERIAL CLEARANCES You must have noncombustible material(s) above the fireplace opening. Noncombustible If Not Using Mantel materials (such as slate, marble, tile, etc.) must Note: If using a mantel, proceed to If Using be at least 1/2"... - Page 11 INSTALLATION Continued NOTICE: Surface temperatures of adjacent walls and mantels be- come hot during operation. Walls Combustible and mantels above the firebox Material 14" may become hot to the touch. Min. If installed properly, these tem- peratures meet the requirement Noncombustible Material of the national product standard.
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Page 12: Safety Information
INSTALLATION Continued See chart below for minimum permanent flue WARNING: If installing in a opening you must provide. Attach damper clamp so the minimum permanent flue open- sunken fireplace, special care ing will be maintained at all times. is needed. You must raise the fireplace floor to allow access to Area of Various Standard Round Flues heater control panel. - Page 13 INSTALLATION Continued 4. Place logs in their proper position on heater WARNING: For natural gas base (see Installing Logs, page 16). units, never connect heater to 5. Center heater base and logs front-to-front and side-to-side in fireplace. private (non-utility) gas wells. 6.
- Page 14 INSTALLATION Continued We recommend that you install sediment trap CAUTION: Use only new, in supply line as shown in Figure 14. Locate sediment trap where it is within reach for black iron or steel pipe. Inter- cleaning. Install in piping system between nally-tinned copper tubing may fuel supply and heater.
- Page 15 INSTALLATION Continued 2. Cap off open end of gas pipe where equip- Equipment Open Shutoff Valve ment shutoff valve was connected. 3. Pressurize supply piping system by either opening propane/LP supply tank valve for propane/LP gas or opening main gas Closed valve located on or near gas meter for Figure 15 - Equipment Shutoff Valve...
- Page 16 INSTALLATION Continued INSTALLING LOGS sembly is resting on back tabs of base. There are 2 small notches on front of log WARNING: Failure to posi- that fit onto front tabs and 2 small notches on back that fit over back tabs. tion the parts in accordance 2.
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Page 17: Operation
OPERATION LIGHTING FOR YOUR SAFETY INSTRUCTIONS READ BEFORE LIGHTING WARNING WARNING: If you do not fol- • If fireplace has glass doors, low these instructions exactly, a fire or explosion may result never operate this heater with causing property damage, per- glass doors closed. -
Page 18: Inspecting Burners
OPERATION Continued 5. Press in control knob and turn counter- • If control knob does not pop out when clockwise to the PILOT position released, contact a qualified service (see Figure 21). The ignitor will spark person or gas supplier for repairs. once. -
Page 19: Cleaning And Maintenance
INSPECTING bURNERS Continued Note: Pilot flame on natural gas units will have MAIN BURNER a slight curve, but flame should be blue and Periodically inspect all burner flame holes have no yellow or orange color. with heater running. All slotted burner flame holes should be open with yellow flame pres- BURNER PRIMARY AIR HOLES ent. -
Page 20: Troubleshooting
CLEANING AND MAINTENANCE Continued 5. Blow air into primary air holes on injector LOGS holder. • If you remove logs for cleaning, refer to Install- 6. In case any large clumps of dust have now ing Logs, page 16, to properly replace logs. been pushed into burner, repeat steps 3 •... - Page 21 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. After ODS/pilot lights, keep long enough control knob pressed in 30 seconds...
- Page 22 TROUbLESHOOTING Continued OBSERVED PROBLEM POSSIBLE CAUSE REMEDY Slight smoke or odor during 1. Not enough air 1. Check burner for dirt and initial operation debris. If found, clean burner (see Cleaning and Maintenance, page 19) 2. Gas regulator defective 2. Replace gas regulator 3.
- Page 23 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 24: Parts
PARTS MODELS HDL18(N,P), VDB18(N,P) www.desatech.com 122493-01C... - Page 25 PARTS This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 26 of this manual. NO. PART NO. DESCRIPTION QTY. Log Base • • • • 120783-01 Cast Iron Grate •...
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Page 26: Specifications
Contact authorized dealers of this product. If either contact your nearest Parts Central they can’t supply original replacement part(s), (see page 27) or call DESA Heating, LLC at call DESA Heating, LLC at 1-866-672-6040. 1-866-672-6040 for referral information. A list... -
Page 27: Accessories
Purchase these accessories from your local dealer. If they can not supply these accessories, either contact your nearest Parts Central or call DESA Heating, LLC at 1-866-672-6040 for information. You can also write to the address listed on the back page of this manual. -
Page 28: 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 one (1) year on new products and 30 days on factory reconditioned products from the date of first purchase.
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