Desa H18N Owner's Operation And Installation Manual
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Desa H18N Owner's Operation And Installation Manual

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UNVENTED (VENT-FREE) GAS LOG HEATER
OWNER'S OPERATION AND INSTALLATION MANUAL
Vintage Oak
18" and 24" Variable
Manually-Controlled
Models
Remote-Ready and Variable Manually-Controlled Models Also Design-Certified As
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.
Vented Decorative Appliances
FLAME-MAX
For more information, visit www.desatech.com
Log Designs
®
Golden Oak
18", 24", 30" and 36"
Remote-Ready Models

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Summary of Contents for Desa H18N

  • Page 1 UNVENTED (VENT-FREE) GAS LOG HEATER OWNER’S OPERATION AND INSTALLATION MANUAL Vintage Oak Golden Oak 18" and 24" Variable 18", 24", 30" and 36" Remote-Ready Models Manually-Controlled Models Remote-Ready and Variable Manually-Controlled Models Also Design-Certified As Vented Decorative Appliances FLAME-MAX Log Designs ®...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS Safety ..............2 Cleaning and Maintenance ........ 27 Local Codes............5 Wiring Diagram ..........28 Product Identification ........... 5 Troubleshooting ..........28 Optional Remote Control Accessories ....5 Specifications ............ 32 Unpacking............5 Replacement Parts ..........32 Product Features ..........
  • Page 3 SAFETy Continued WARNING: Do not use a WARNING: This product con- blower insert, heat exchanger tains and/or generates chemicals insert or other accessory not ap- known to the State of California proved for use with this heater. to cause cancer or birth defects or other reproductive harm.
  • Page 4 SAFETy 8. To prevent the creation of soot, follow the instructions in Cleaning and Maintenance, Continued page 27. 9. Before using furniture polish, wax, carpet Keep the appliance area clear cleaner or similar products, turn heater off. If and free from combustible ma- heated, the vapors from these products may terials, gasoline and other flam- create a white powder residue within burner...

  • Page 5: Local Codes

    3. Check heater for any shipping damage. If information. heater is damaged call DESA Heating, LLC 1. Remove logs and heater base assembly at 1-866-672-6040 for replacement parts from carton. Note: Do not pick up heater before returning to dealer.

  • Page 6: Product Features

    PRODUCT FEATURES OPERATION SAFETY DEVICE This heater is clean burning. It requires no out- This heater has a pilot with an Oxygen Deple- side venting. There is no heat loss out a vent tion Sensing (ODS) safety shutoff system. The or up a chimney.
  • Page 7 AIR FOR COMBUSTION AND VENTILATION Continued Confined and Unconfined Space Vent-free heater ___________Btu/Hr The National Fuel Gas Code, ANSI Z223.1/ Gas water heater* ___________Btu/Hr NFPA 54 defines a confined space as a space Gas furnace ___________Btu/Hr whose volume is less than 50 cubic feet per Vented gas heater ___________Btu/Hr 1,000 Btu/hr (4.8 m...
  • Page 8 AIR FOR COMBUSTION AND VENTILATION Continued ceiling and one within 12" of the floor on the WARNING: If the area in which wall connecting the two spaces (see options the heater may be operated does 1 and 2, Figure 2). You can also remove door into adjoining room (see option 3, Figure 2 not meet the required volume for ).

  • Page 9: Installation

    INSTALLATION NOTICE: This heater is intended WARNING: Seal any fresh for use as supplemental heat. air vents or ash clean-out doors Use this heater along with your located on floor or wall of fire- primary heating system. Do not place. If not, drafting may cause install this heater as your pri- pilot outage or sooting.
  • Page 10 INSTALLATION Continued CHECK GAS TYPE Note: When installing your gas logs into a manufactured firebox, follow firebox Use the correct gas type (natural or propane/ manufacturer’s instructions for minimum LP) for your unit. If your gas supply is not cor- clearances to combustible materials.

  • Page 11: Mantel Clearances

    INSTALLATION Continued Mantel Shelf 10" Underside of Noncombustible Requirements for Mantel Shelf 8" Material Distance Safe Installation 6" 1 /2 " 12" or more Noncombustible mate- All minimum rial OK. distances are in inches Between 8" and 12" 24", 30" or 36" Models: Minimum Log Set Noncombustible...
  • Page 12 INSTALLATION Continued INSTALLING DAMPER CLAMP NOTICE: Surface temperatures ACCESSORY FOR VENTED of adjacent walls and mantels OPERATION become hot during operation. Note: When used as a vented heater, ap- Walls and mantels above the pliance must be installed only in a solid-fuel firebox may become hot to burning fireplace with a working flue and con- the touch.
  • Page 13 INSTALLATION Continued Installation Items Needed Area of Various Standard Round Flues • hardware package (provided with heater) Diameter Area • approved flexible gas hose and fittings (not 5" 20 sq. inches provided) (if allowed by local codes) 6" 29 sq. inches •...
  • Page 14 INSTALLATION Continued 5. Center heater base and logs front-to-back CONNECTING TO GAS SUPPLY and side-to-side in fireplace. WARNING: This appliance 6. Carefully remove logs without moving heater base. requires a 1/2" NPT (National 7. Mark screw locations through one hole Pipe Thread) inlet connection to on each side of the mounting bracket the pressure regulator.
  • Page 15 INSTALLATION Continued duce incoming gas pressure, heater regulator We recommend that you install a sediment damage could occur. Install external regulator trap in supply line as shown in Figure 16 or 17, with the vent pointing down as shown in Figure depending on your model.
  • Page 16 INSTALLATION Continued 2. Cap off open end of gas pipe where equip- CAUTION: Avoid damage to ment shutoff valve was connected. regulator. Hold gas regulator 3. Pressurize supply piping system by either opening propane/LP supply tank valve with wrench when connecting for propane/LP gas or opening main gas it to gas piping and/or fittings valve located on or near gas meter for...
  • Page 17 INSTALLATION Continued 4. Check all joints from equipment shutoff CAUTION: After installa- valve to control valve (Manually-Con- trolled Models), or to gas control (Remote- tion and periodically thereafter, Ready Models) (see Figures 19 and 20). check to ensure that no flame Apply noncorrosive leak detection fluid to comes in contact with any log.
  • Page 18 INSTALLATION Continued Log Set One-Piece Burner Ports Log Set Middle Section at Bottom of Log Set Burner Figure 22 - Installing Vintage Oak Log Sets (Top View) Chassis “U”-shaped Vintage Oak and Golden Oak One-Piece Cutout in Chassis Log Set Figure 24 - Installing Golden Oak One- 1.
  • Page 19 INSTALLATION Continued 3. Place rear log (#3) on back portion of 5. Place left top log (#5) over logs #2 and 3. chassis (see Figure 28). Log will "hug" Left top log will fit into indentions in these the burner (see Figure 29). logs.

  • Page 20: Operation

    OPERATION MANUALLy-CONTROLLED MODELS FOR YOUR SAFETY LIGHTING READ BEFORE LIGHTING INSTRUCTIONS WARNING: If you do not fol- WARNING: low these instructions exactly, • If fireplace has glass doors, a fire or explosion may result never operate this heater with causing property damage, per- glass doors closed.
  • Page 21 OPERATION Continued MANUALLy-CONTROLLED MODELS 5. Slightly press and turn control knob coun- Ignitor Electrode Pilot terclockwise to the PILOT position. Burner Thermocouple Keep control knob pressed in for five (5) seconds (see Figure 30). Note: You may be running this heater for the first time after hooking up to gas supply.
  • Page 22 OPERATION Continued REMOTE-READy MODELS LIGHTING FOR YOUR SAFETY INSTRUCTIONS READ BEFORE LIGHTING WARNING: WARNING: If you do not fol- • If fireplace has glass doors, low these instructions exactly, never operate this heater with a fire or explosion may result glass doors closed.
  • Page 23 OPERATION Continued REMOTE-READy MODELS 4. Press in and turn control knob clock- 10. Wait one minute and switch selector wise to the OFF position (see switch to the ON position to light burners. Figure 32). Note: AUTO is only functional when using GWMT1 or GWMS2 optional accessories.
  • Page 24 OPERATION Continued REMOTE-READy MODELS Control Knob TO TURN GAS OFF Flame Adjustment Knob in On Position TO APPLIANCE Shutting Off Heater 1. Turn control knob clockwise to the REMOTE OFF position. 2a. Set selector switch in the OFF position. Selector Switch in Remote Position 2b.
  • Page 25 OPERATION Continued REMOTE-READy MODELS Digital Display Note: Do not hold the hand-held remote for Turns Shows a long time. Body temperature will affect its Hand-Held Temperature AUTO operation in the AUTO mode. Remote On ROOM and Settings TEMP TEMP or Off and Safety Features Locks Allows You...

  • Page 26: Inspecting Burners

    INSPECTING BURNERS Check pilot flame pattern and burner flame Pilot Burner Thermocouple patterns often. PILOT FLAME PATTERN Figure 38 shows a correct pilot flame pattern. Figure 39 shows an incorrect pilot flame pat- tern. The incorrect pilot flame is not touching the thermocouple.

  • Page 27: Cleaning And Maintenance

    CLEANING AND MAINTENANCE particles of dust, dirt, lint, or pet hair with WARNING: Turn off heater a soft cloth or vacuum cleaner nozzle. and let cool before cleaning. 5. Blow air into the primary air holes on the injector holder. 6.

  • Page 28: Wiring Diagram

    WIRING DIAGRAM (Remote-Ready Models Only) Thermopile TROUBLESHOOTING WARNING: Turn off and unplug 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.
  • Page 29 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 30 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 27) 2. Gas regulator defective 2. Replace gas control 3.
  • Page 31 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.

  • Page 32: Specifications

    Contact authorized dealers of this product. If they can’t supply original replacement part(s), they can’t supply original replacement part(s), call DESA Heating, LLC at 1-866-672-6040 for call DESA Heating, LLC at 1-866-672-6040. referral information. A list of authorized dealers can be found by visiting www.desatech.com.

  • Page 33: Accessories

    • heater will not produce specified heat serial numbers of your heater ready. • for propane/LP units, propane/LP gas sup- You can also visit DESA Heating, LLC’s web ply may be low site at www.desatech.com. You may feel your gas pressure is too low. If so, contact your local propane/LP or natural gas supplier.

  • Page 34: Parts

    PARTS VARIABLE MANUALLY-CONTROLLED FLAME-MAX VINTAGE OAK LOG MODELS H18P, H18N, H24P AND H24N www.desatech.com 110399-01J...
  • Page 35 PARTS LIST VARIABLE MANUALLY-CONTROLLED FLAME-MAX VINTAGE OAK LOG MODELS ® This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 32 of this manual. NO. PART NO. DESCRIPTION QTY. 110397-01 Two Piece Log Set •...
  • Page 36 PARTS REMOTE-READY FLAME-MAX GOLDEN OAK LOG MODELS ® HD18PR, HD18NR, HD24PR, HD24NR, HD30PR, HD30NR, HD36PR AND HD36NR NO. 18" Models 24" Models 30" Models 36" Models DESCRIPTION QTY. 110397-03 110397-04 110397-05 ––– Five Piece Golden Oak Log Set 1-1 110315-01 110313-01 110320-01 –––...
  • Page 37 PARTS LIST REMOTE-READY FLAME-MAX MODELS ® This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 32 of this manual. NO. PART NO. DESCRIPTION QTY. PP225 ODS Pilot (LP) •...
  • Page 38 NOTES _____________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ _____________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ _____________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ www.desatech.com 110399-01J...
  • Page 39 NOTES _____________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ _____________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ _____________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ 110399-01J www.desatech.com...

  • Page 40: 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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