Desa E18N Owner's Manual
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Desa E18N Owner's Manual

Unvented (vent-free)
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UNVENTED (VENT-FREE) GAS LOG HEATER
OWNER'S OPERATION AND INSTALLATION MANUAL
("A" MODELS) 18", 24" AND 30" REMOTE-READY
("C" MODELS) 18", 24" AND 30" VARIABLE MANUALLY-CONTROLLED
("B" MODELS) 18", 24" AND 30" THERMOSTATICALLY-
Remote-Ready and Variable Manually-Controlled Models Also Design-Certified As
WARNING: If the information in this manual is not fol-
lowed 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.
CONTROLLED
Vented Decorative Appliances
Save this manual for future reference.
For more information, visit www.desatech.com
LO
PILOT
OFF
HI

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  • Page 1 UNVENTED (VENT-FREE) GAS LOG HEATER OWNER’S OPERATION AND INSTALLATION MANUAL PILOT (“A” MODELS) 18", 24" AND 30" REMOTE-READY (“C” MODELS) 18", 24" AND 30" VARIABLE MANUALLY-CONTROLLED (“B” MODELS) 18", 24" AND 30" THERMOSTATICALLY- CONTROLLED Remote-Ready and Variable Manually-Controlled Models Also Design-Certified As Vented Decorative Appliances WARNING: If the information in this manual is not fol- lowed exactly, a fire or explosion may result causing...

  • Page 2: Table Of Contents

    WARNING: Improper installation, adjustment, altera- tion, service or maintenance can cause injury or prop- erty damage. Refer to this manual for correct installation and operational procedures. For assistance or addi- tional information consult a qualified installer, service agency or the gas supplier. WARNING: This appliance is for installation only in a solid-fuel burning masonry or UL127 factory-built fire- place or in a listed ventless firebox enclosure.

  • Page 3: Safety Information

    SAFETY INFORMATION WARNING: Do not allow fans to blow directly into the heater. WARNING: This product con- tains and/or generates chemicals Avoid any drafts that alter burner known to the State of California flame patterns. Ceiling fans can to cause cancer or birth defects create drafts that alter burner flame patterns.

  • Page 4: Local Codes

    SAFETY INFORMATION 10. This heater needs fresh, outside air ventilation to run properly. This heater has an Oxygen Deple- Continued tion Sensing (ODS) safety shutoff system. The 1. This appliance is only for use with the type of ODS shuts down the heater if enough fresh air gas indicated on the rating plate.

  • Page 5: Product Identification

    PRODUCT IDENTIFICATION Crossover Log Rear Rear Front Burner Piezo Ignitor Front Burner Middle Control Knob Base Assembly Crossover Log Front Burner Rear Log Front Rear Burner Piezo Ignitor Control Knob Middle Flame Adjustment Remote Knob Control (Optional) Base Selector Switch Assembly (Optional) Figure 1 - Product Identification...

  • Page 6: Product Features

    PRODUCT FEATURES Exhaust fans, fireplaces, clothes dryers and fuel burning appliances draw air from the house to OPERATION operate. You must provide adequate fresh air for This heater is clean burning. It requires no outside these appliances. This will insure proper venting venting.

  • Page 7: Combustion And Ventilation Air

    AIR FOR COMBUSTION Add the Btu/Hr of all fuel burning appliances in the space. AND VENTILATION Vent-free fireplace __________ Btu/Hr Continued Gas water heater* __________ Btu/Hr Gas furnace __________ Btu/Hr Confined and Unconfined Space The National Fuel Gas Code, ANSI Z223.1/NFPA Vented gas heater __________ Btu/Hr 54 defines a confined space as a space whose...

  • Page 8: Installation

    AIR FOR COMBUSTION Ventilated AND VENTILATION Outlet Attic Continued Outlet A ir VENTILATION AIR To Attic Ventilation Air From Inside Building This fresh air would come from an adjoining un- Crawl Space confined space. When ventilating to an adjoining Inlet unconfined space, you must provide two permanent Ventilated openings: one within 12"...
  • Page 9 INSTALLATION CAUTION: This heater creates Continued warm air currents. These currents move heat to wall surfaces next WARNING: Before installing in to heater. Installing heater next a solid fuel burning fireplace, the to vinyl or cloth wall coverings or chimney flue and firebox must be operating heater where impurities cleaned of soot, creosote, ashes (such as, but not limited to, to-...
  • Page 10 INSTALLATION Minimum Noncombustible Material Clearances Continued If Not Using Mantel Carefully follow the instructions below. This will Note: If using a mantel proceed to If Using Mantel, ensure safe installation into a masonry, UL127- page 11. If not using a mantel, follow the informa- listed manufactured fireplace, or listed vent-free tion on this page.
  • Page 11 INSTALLATION Continued If Using Mantel You must have noncombustible material(s) above the fireplace opening. Noncombustible materials (such as slate, marble, tile, etc.) must be at least 1/2" thick. With sheet metal, you must have non- combustible material behind it. Noncombustible material must extend at least 8"...
  • Page 12 INSTALLATION Continued MANTEL CLEARANCES Combustible Material 14" In addition to meeting noncombustible material Min. clearances, you must also meet required clearances between fireplace opening and mantel shelf. If Noncombustible Material you do not meet the clearances listed below, you Figure 8 - Minimum Fireplace Clearances will need a hood.
  • Page 13 INSTALLATION Continued Area of Various Standard Round Flues Diameter (in.) Area (sq. in.) 5" 20 sq. inches 6" 29 sq. inches 7" 39 sq. inches 8" 51 sq. inches Chimney Minimum Permanent Height (ft.) Flue Opening (sq. in.) 6' to 15' 39 sq.
  • Page 14 INSTALLATION Continued IMPORTANT: Hold gas regulator with wrench when connecting flexible gas hose (Variable Manually-Controlled and Thermo- statically-Controlled Models Only). Masonry Screw 2. Locate mounting brackets, bolts, and nuts in hardware package (Variable Manually-Con- trolled and Thermostatically-Controlled Models Only). Attach mounting brackets to heater base (see Figure 13).
  • Page 15 INSTALLATION Apply pipe joint sealant lightly to male NPT threads. This will prevent excess sealant from Continued going into pipe. Excess sealant in pipe could result in clogged heater valves. WARNING: Use pipe joint sealant that is resistant to liquid petroleum (LP) gas.
  • Page 16 Figure 16 - Gas Connection (Variable Manually-Controlled and Thermostatically-Controlled Models Only) CSA Design-Certified Equipment Shutoff Valve With 1/8" NPT Tap* Approved Flexible Gas Hose (if allowed by local codes) 3" Min Gas Control Figure 17 - Gas Connection (Remote- Ready Models Only) * Purchase the optional CSA design-certified equipment shutoff valve from your dealer.
  • Page 17 INSTALLATION Equipment Propane/LP Shutoff Valve Continued Supply Tank Test Pressures Equal To or Less Than 1/2 PSIG (3.5 kPa) 1. Close equipment shutoff valve (see Figure 18). 2. Pressurize supply piping system by either opening propane/LP supply tank valve for propane/LP gas or opening main gas valve located on or near gas meter for natural gas, or using compressed air.
  • Page 18 INSTALLATION Groove Rear Log (#3) in Back Continued of Log Groove 2. Rest middle log (#2) behind metal posts on front in Back burner. Make sure the grooves in the bottom of of Log Grate Prong the log fit over the grate. Bring the log forward next to the metal posts.

  • Page 19: Operating Heater

    OPERATING HEATER LIGHTING INSTRUCTIONS THERMOSTAT-CONTROLLED MODELS WARNING: • If fireplace has glass doors, FOR YOUR SAFETY never operate this heater with READ BEFORE LIGHTING glass doors closed. If you op- erate heater with doors closed, WARNING: If you do not fol- heat buildup inside fireplace low these instructions exactly, will cause glass to burst.

  • Page 20: Thermostat Control

    OPERATING HEATER Ignitor Electrode Thermocouple Pilot Burner Continued 5. Turn control knob counterclockwise to the PILOT position. Press in control knob for five (5) seconds (see Figure 25). Note: You may be running this heater for the first time after hooking up to gas sup- ply.
  • Page 21 OPERATING HEATER LIGHTING INSTRUCTIONS Continued WARNING: MANUALLY-CONTROLLED MODELS • If fireplace has glass doors, never operate this heater with FOR YOUR SAFETY glass doors closed. If you op- READ BEFORE LIGHTING erate heater with doors closed, heat buildup inside fireplace WARNING: If you do not fol- will cause glass to burst.
  • Page 22 OPERATING HEATER Ignitor Electrode Thermocouple Pilot Burner Continued 5. Press in control knob and turn counter- clockwise to the PILOT position. Keep control knob pressed in for five (5) seconds (see Figure 27). Note: You may be running this heater for the first time after hooking up to gas sup- Figure 28 - Pilot ply.
  • Page 23 OPERATING HEATER LIGHTING INSTRUCTIONS Continued WARNING: REMOTE-READY MODELS • If fireplace has glass doors, FOR YOUR SAFETY never operate this heater with READ BEFORE LIGHTING glass doors closed. If you op- erate heater with doors closed, WARNING: If you do not fol- heat buildup inside fireplace low these instructions exactly, will cause glass to burst.
  • Page 24 OPERATING HEATER Continued WARNING: Burners will come on automatically within one minute when the selector switch is in the ON position after the pilot is lit. 5. Wait five (5) minutes to clear out any gas. Then smell for gas, including near the floor. If you smell gas, STOP! Follow “B”...
  • Page 25 OPERATING HEATER ON/OFF SERIES (MODEL GHRCB) Hold the control button on the hand-held remote Continued until burner turns on. Hold the control button MANUAL LIGHTING again until burner turns off (see Figure 33). PROCEDURE TO LOCK press both buttons on hand-held 1.

  • Page 26: Inspecting Burners

    OPERATING HEATER INSPECTING BURNERS Continued Check pilot flame pattern and burner flame pat- terns often. Manual Mode 1. Press the POWER and LOCK buttons PILOT FLAME PATTERN together to turn on the hand-held remote Figure 35 shows a correct pilot flame pattern. Figure control.

  • Page 27: Cleaning And Maintenance

    INSPECTING BURNERS CLEANING AND Continued MAINTENANCE FRONT BURNER FLAME PATTERN WARNING: Turn off heater Figure 37 shows correct front burner flame pat- and let cool before cleaning. tern. Figure 38 shows incorrect front burner flame pattern. The incorrect burner flame pattern shows yellow tipping at top of blue flame.
  • Page 28 2. Inspect burner, pilot, and primary air inlet holes on injector holder for dust and dirt (see Figure 39). 3. Blow air through the ports/slots and holes in the burner. 4. Check the injector holder located at the end of the burner tube again. Remove any large particles of dust, dirt, lint, or pet hair with a soft cloth or vacuum cleaner nozzle.

  • Page 29: Troubleshooting

    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. OBSERVED PROBLEM POSSIBLE CAUSE REMEDY...
  • Page 30 TROUBLESHOOTING Continued OBSERVED PROBLEM POSSIBLE CAUSE REMEDY ODS/pilot lights but flame 1. Control knob not fully pressed in 1. Press in control knob fully goes out when control knob is 2. Control knob not pressed in 2. After ODS/pilot lights, keep released long enough control knob pressed in 30...
  • Page 31 TROUBLESHOOTING Continued OBSERVED PROBLEM POSSIBLE CAUSE REMEDY Yellow flame in front burner dur- 1. Not enough air 1. Check burner(s) for dirt ing burner combustion and debris. If found, clean burner(s) (see Cleaning and Maintenance, page 27) 2. Gas regulator defective 2.
  • Page 32 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 33: Optional Positioning Of Thermostat Sensing Bulb

    OPTIONAL POSITIONING OF THERMOSTAT SENSING BULB (Thermostat-Controlled Models Only) FOR MASONRY AND FACTORY- BUILT METAL FIREPLACE If your log set cycles to pilot, but the room tem- perature drops to a lower than ideal comfort level before the log set comes back on, you may want to reposition the thermostat sensing bulb.

  • Page 34: Wiring Diagram

    OPTIONAL POSITIONING OF THERMOSTAT SENSING BULB Continued 4. The mounting clip must be a minimum of 3" from bottom of fireplace to prevent crimping of capillary. Once you have decided on a location, clean the area thoroughly. Remove the paper backing from the adhesive on back of mounting clip.

  • Page 35: Specifications

    SPECIFICATIONS Thermostat-Controlled Models 18" 24" 30" Btu (Variable) 16,000/26,000 20,000/33,000 21,500/36,000 Type Gas Propane/LP Natural Propane/LP Natural Propane/LP Natural Ignition Piezo Piezo Piezo Piezo Piezo Piezo Manifold Pressure 7.9" W.C. 3.4" W.C. 7.9" W.C. 3.4" W.C. 7.9" W.C. 3.4" W.C. Inlet Gas Pressure (in.

  • Page 36: Illustrated Parts Breakdown And Parts List

    ILLUSTRATED PARTS BREAKDOWN VARIABLE MANUALLY-CONTROLLED SPLIT OAK MODELS VS18NVC, E18N, VS18PVC, E18P, VS24NVC, E24N, VS24PVC, E24P, VS30NVC AND VS30PVC 24" and 30" Models Only 18" Model Only 15 16 www.desatech.com 104415-01M...
  • Page 37 This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 34 of this manual. PART NUMBER KEY VS18NVC VS18PVC VS24NVC VS24PVC VS30NVC VS30PVC NO. E18N E18P E24N E24P DESCRIPTION 104388-01 104388-01 —...
  • Page 38 ILLUSTRATED PARTS BREAKDOWN THERMOSTAT-CONTROLLED MODELS VS18NTB, VS18PTB, VS24NTB, VS24PTB, VS30NTB and VS30PTB 18" Model Only 24" and 30" Models Only www.desatech.com 104415-01M...

  • Page 39: Parts List

    PARTS LIST THERMOSTAT-CONTROLLED MODELS This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 34 of this manual. PART NUMBER NO. VS18NTB VS18PTB VS24NTB VS24PTB VS30NTB VS30PTB DESCRIPTION 104388-01 104388-01 —...
  • Page 40 ILLUSTRATED PARTS BREAKDOWN REMOTE-READY VARIABLE CONTROL MODELS VS18NRA, E18NR, VS18PRA, E18PR, VS24NRA, E24NR, VS24PRA, E24PR, VS30NRA, E30NR, VS30PRA AND E30PR 24" and 30" Models Only 18" Model Only Items 23 and 30 Are For Natural Gas Models Only www.desatech.com 104415-01M...
  • Page 41 PARTS LIST REMOTE-READY VARIABLE CONTROL This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 34 of this manual. PART NUMBERS KEY VS18NRA VS18PRA VS24NRA VS24PRA VS30NRA VS30PRA NO. E18NR E18PR E24NR E24PR...

  • Page 42: Accessories

    ACCESSORIES Purchase these heater accessories from your local dealer. If they can not supply these accessories, call DESA Heating Products at 1-866-672-6040 for referral information. You can also write to the address listed on the back page of this manual.
  • Page 43 ACCESSORIES DAMPER CLAMP - GA6080 (Not Shown) Continued For Remote-Ready and Variable Manually- WALL-MOUNT THERMOSTAT Controlled Models. Permanently opens chimney SWITCH - GWMT1 flue damper for vented operation. (Not Shown) LAVA ROCK - GA6060 For all Remote-Ready Models. The desired com- (Not Shown) fort setting can be selected on the wall thermostat For all models.

  • Page 44: Warranty Information

    This warranty is extended only to the original retail purchaser. This warranty covers the cost of part(s) required to restore this heater to proper operating condition and an allowance for labor when provided by a DESA Heating Products Authorized Service Center. Warranty part(s) MUST be obtained through authorized dealers of this product and/or DESA Heating Products who will provide original factory replacement parts.

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