Desa R series Owner's Manual

Unvented (vent-free) gas log heater

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UNVENTED (VENT-FREE) GAS LOG HEATER
OWNER'S OPERATION AND INSTALLATION MANUAL
("R" MODELS) 18", 24", 30" AND 36" REMOTE-READy
("V" MODELS) 18", 24", 30" AND 36" VARIAbLE MANUALLy-
("T" MODELS) 18", 24", 30" AND 36" THERMOSTATICALLy-
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.
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.
For more information, visit www.desatech.com
CONTROLLED
CONTROLLED
Vented Decorative Appliances
LO
PILOT
OFF
HI

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Summary of Contents for Desa R series

  • Page 1 UNVENTED (VENT-FREE) GAS LOG HEATER OWNER’S OPERATION AND INSTALLATION MANUAL PILOT ("R" MODELS) 18", 24", 30" AND 36" REMOTE-READy (“V” MODELS) 18", 24", 30" AND 36" VARIAbLE MANUALLy- CONTROLLED (“T” MODELS) 18", 24", 30" AND 36" THERMOSTATICALLy- CONTROLLED 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

    TAbLE OF CONTENTS Safety Information ..........2 Troubleshooting ..........29 Local Codes............4 Optional Positioning of Thermostat Sensing Bulb ..33 Product Identification ........... 5 Wiring Diagram ..........34 Optional Remote Control Accessories ....5 Service Hints ............. 34 Unpacking............5 Technical Service..........
  • Page 3 SAFETy INFORMATION WARNING: Do not allow fans Continued to blow directly into the heater. Avoid any drafts that alter burner WARNING: This product con- flame patterns. Ceiling fans can tains and/or generates chemicals create drafts that alter burner known to the State of California flame patterns.
  • Page 4: Local Codes

    11. Do not run heater where flammable liquids SAFETy INFORMATION or vapors are used or stored or under dusty Continued conditions. 1. This appliance is only for use with the type of 12. Do not use this heater to cook food or burn gas indicated on the rating plate.
  • Page 5: Product Identification

    PRODUCT UNPACkING IDENTIFICATION CAUTION: Do not remove the Rear Log Rear Burner data plates from the grate as- Middle sembly. The data plates contain Front important warranty and safety information. 1. Remove logs and heater base assembly from carton. Note: Do not pick up heater base as- sembly by burners.
  • Page 6: Air For Combustion And Ventilation

    AIR FOR COMbUSTION Unusually tight construction is defined as construction where: AND VENTILATION a. walls and ceilings exposed to the out- side atmosphere have a continuous WARNING: This heater shall water vapor retarder with a rating of not be installed in a confined one perm (6 x 10 kg per pa-sec-m ) or...
  • Page 7: Combustion And Ventilation Air

    If the actual Btu/Hr used is less than the maximum AIR FOR COMbUSTION Btu/Hr the space can support, the space is an uncon- AND VENTILATION fined space. You will need no additional fresh air ventilation. Continued Example: Space size 20 ft. (length) x 16 ft. (width) x 8 ft.
  • Page 8: Installation

    AIR FOR COMbUSTION NOTICE: State or local codes may AND VENTILATION only allow operation of this appli- Continued ance in a vented configuration. Check your state or local codes. ventilation Air From Outdoors Provide extra fresh air by using ventilation grills or ducts.
  • Page 9 INSTALLATION LOG SIZING REQUIREMENTS Continued Minimum Firebox Size Front Rear* CAUTION: This heater cre- Size Height Depth Width Width ates warm air currents. These 18" 17" 14" 20" 14" currents move heat to wall sur- 24" 17" 14" 26" 18" faces next to heater.
  • Page 10: Mantel Clearances

    INSTALLATION If Using Mantel You must have noncombustible material(s) above Continued the fireplace opening. Noncombustible materials (such as slate, marble, tile, etc.) must be at least MINIMUM NONCOMBUSTIBLE 1/2" thick. With sheet metal, you must have non- MATERIAL CLEARANCES combustible material behind it. Noncombustible If Not Using Mantel material must extend at least 8"...
  • Page 11 INSTALLATION FLOOR CLEARANCES A. If installing appliance on the floor level, you Continued must maintain the minimum distance of 14" Determining Minimum Mantel Clearance to combustibles (see Figure 8). When Using a Hood B. If combustible materials are less than 14" to If minimum clearances in Figure 6, page 10, are the fireplace, you must install appliance at not met, you must have a hood.
  • Page 12 INSTALLATION INSTALLING HEATER BASE ASSEMBLY Continued If reasons number 1 or 2 apply to you, you must WARNING: You must secure permanently open chimney flue damper. You must this heater to fireplace floor. If install the damper clamp accessory (to order, see not, heater will move when you Accessories, page 42).
  • Page 13 5. Remove heater base from fireplace. INSTALLATION 6. Remove mounting brackets from heater base Continued (Variable Manually-Controlled and Thermo- 1. Apply pipe joint sealant lightly to male statically-Controlled Models Only). threads of gas fitting (not provided). For 7. Drill holes at marked locations using 3/16" Variable Manually-Controlled and Ther- drill bit.
  • Page 14 For propane/LP units, the installer must supply INSTALLATION an external regulator. The external regulator will Continued reduce incoming gas pressure. You must reduce incoming gas pressure to between 11 and 14 inches CONNECTING TO GAS SUPPLY of water. If you do not reduce incoming gas pres- sure, heater regulator damage could occur.
  • Page 15 INSTALLATION CSA Design-Certified Equipment Shutoff Valve Continued With 1/8" NPT Tap* Propane/LP Approved From External WARNING: Use pipe joint Flexible Regulator sealant that is resistant to liquid Gas Hose (if (11" W.C.** allowed by petroleum (LP) gas. to 14" W.C. local codes) Pressure) We recommend that you install a sediment trap in...
  • Page 16 INSTALLATION Equipment Thermostat Gas Propane/LP Shutoff Valve Continued Valve or Control Supply Tank Valve Location PRESSURE TESTING GAS SUPPLY PIPING SYSTEM Test Pressures In Excess Of 1/2 PSIG (3.5 kPa) 1. Disconnect appliance with its appliance main gas valve (control valve) and equipment shutoff valve from gas supply piping system.
  • Page 17 INSTALLATION Continued INSTALLING OPTIONAL REMOTE Red Wire ACCESSORIES From Receiver Installing Remote Receiver Unit 1. Disconnect switch wires from the control valve. Valve 2. Remove screws and nuts. White Wire 3. Remove switch plate (see Figure 21). Discard From Receiver after removing.
  • Page 18: Installing Logs

    INSTALLATION Front Log (#1) Continued Installing 9-Volt Battery (Not Included) in Notch Hand-Held Remote Control Unit 1. Remove battery cover on back of remote control unit. Grate 2. Attach terminal wires to the battery. Place Prongs battery into the battery housing. Base 3.
  • 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 Pilot Continued Thermocouple Burner 5. Turn control knob counterclockwise to the PILOT position. Press in control knob for five (5) seconds (see Figure 29). 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 • If fireplace has glass doors, MODELS 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 Pilot Electrode Continued Thermocouple Burner 5. Press in control knob and turn counter- clockwise to the PILOT position. Keep control knob pressed in for five (5) seconds (see Figure 31). Note: You may be running this heater for Figure 32 - Pilot the first time after hooking up to gas sup- 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 WARNING: Make sure the Continued selector switch is in the OFF 5. Wait five (5) minutes to clear out any gas. position when you are away from Then smell for gas, including near the floor. If you smell gas, STOP! Follow “B” in the home for long periods of time.
  • Page 25 ON/OFF SERIES (MODEL HRC100) OPERATING HEATER 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 37). PROCEDURE press both buttons on hand-held TO LOCk 1.
  • Page 26: Inspecting Burners

    OPERATING HEATER Key Pad Lock Feature This feature allows the user to lock/unlock Continued the keypad on the hand-held remote in the Note: Do not leave the hand-held remote in the MANU or AUTO mode to prevent inadvertent AUTO mode close to the fireplace. The radiant operation (i.e.
  • Page 27: Cleaning And Maintenance

    INSPECTING bURNERS CLEANING AND Continued MAINTENANCE FRONT BURNER FLAME PATTERN WARNING: Turn off heater Figure 41 shows correct front burner flame pat- and let cool before cleaning. tern. Figure 42 shows incorrect front burner flame pattern. The incorrect burner flame pattern shows yellow tipping at top of blue flame.
  • Page 28 CLEANING AND LOGS • If you remove logs for cleaning, refer to Install- MAINTENANCE ing Logs, page 18, to properly replace logs. Continued • Replace log(s) if broken or chipped (dime-sized 4. Check the injector holder located at the end or larger).
  • 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 con- released long enough trol knob pressed in 30 seconds...
  • 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- Figure 46 - Adhesive-backed Mounting BUILT METAL FIREPLACE Clip If your log set cycles to pilot, but the room tem- perature drops to a lower than ideal comfort level Capillary before the log set comes back on, you may want to reposition the thermostat sensing bulb.
  • Page 34: Wiring Diagram

    1-866-672-6040. When calling please have your thermostat sensing bulb into the clip. model and serial numbers of your heater ready. IMPORTANT: Do not crimp capillary. You can also visit DESA Heating Products’ techni- cal services web site at www.desatech.com. Thermostat Sensing Bulb...
  • Page 35: Specifications

    SPECIFICATIONS 18" Thermostat- 18" Variable 18" Remote-Ready Controlled Manually-Controlled Btu (Variable) 16,000/29,000 (LP) 16,000/29,000 (LP) 16,000/29,000 (LP) 16,000/26,000 (NG) 16,000/26,000 (NG) 16,000/26,000 (NG) Type Gas Propane/LP - Natural Propane/LP - Natural Propane/LP - Natural Ignition Piezo Piezo Piezo Manifold Pressure 7.9"...
  • Page 36: Illustrated Parts Breakdown And Parts List

    ILLUSTRATED PARTS bREAkDOWN VARIABLE MANUALLY-CONTROLLED SPLIT OAK MODELS NVS18NV, NVS18PV, NVS24NV, NVS24PV, NVS30NV, NVS30PV, NVS36NV AND NVS36PV (18", 24" & 30" Models) (36" Models) 13 14 www.desatech.com 110882-01K...
  • Page 37: Parts List

    PARTS LIST VARIABLE MANUALLY-CONTROLLED SPLIT OAK 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 NVS18NV/PV NVS24NV/PV NVS30NV/PV NVS36NV/PV DESCRIPTION QTY. 110881-01 110881-04 110881-07...
  • Page 38 ILLUSTRATED PARTS bREAkDOWN THERMOSTAT-CONTROLLED MODELS NVS18NT, NVS18PT, NVS24NT, NVS24PT, NVS30NT, NVS30PT, NVS36NT AND NVS36PT (36" Models) (18", 24" & 30" Models) www.desatech.com 110882-01K...
  • Page 39 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 NVS18NT/PT NVS24NT/PT NVS30NT/PT NVS36NT/PT DESCRIPTION QTY. 110881-01 110881-04 110881-07 113617-01 Front Log (#1) 110881-02...
  • Page 40 ILLUSTRATED PARTS bREAkDOWN REMOTE-READY vARIABLE CONTROL MODELS NVS18NR, NVS18PR, NVS24NR, NVS24PR, NVS30NR, NVS30PR, NVS36NR AND NVS36PR (18", 24" & 30" Models) (36" Models) www.desatech.com 110882-01K...
  • 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 NUMBER NVS18NR/PR NVS24NR/PR NVS30NR/PR NVS36NR/PR DESCRIPTION QTY. 110881-01 110881-04 110881-07 113617-01 Front Log (#1)
  • 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 LAVA ROCK - GA6060 (Not Shown) Continued For all models. Order when additional rock is desired. (1.8 lb. bag) vENT-FREE LOGMATE FIREBOxES ® (Not Shown) CLEANING kIT - GCk Available in 32", 36" and 42" models. Circu- (Not Shown) lating fireboxes feature louvers and an optional 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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