Comfort Glow CSM2618NR 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
Vent-free 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
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 the manual with the appliance.
CONSUMER Retain this manual for future reference.
For more information, visit www.desatech.com
MODELS CSM2618NR, CSM2618PR,
CSM3624NR AND CSM3624PR

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Summary of Contents for Comfort Glow CSM2618NR

  • Page 1 UNVENTED (VENT FREE) GAS LOG HEATER OWNER’S OPERATION AND INSTALLATION MANUAL MODELS CSM2618NR, CSM2618PR, CSM3624NR AND CSM3624PR Vent-free 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 property damage, personal injury or loss of life.
  • Page 2: Table Of Contents

    TAbLE OF CONTENTS Safety Information ..........2 Wiring Diagram ..........21 Product Identification ........... 4 Service Hints ............. 21 Local Codes............5 Technical Service..........21 Unpacking............5 Specifications ............ 21 Product Features ..........5 Troubleshooting ..........22 Air For Combustion and Ventilation ..... 5 Replacement Parts ..........
  • Page 3 SAFETy INFORMATION Due to high temperatures, the Continued appliance should be located out of traffic and away from furniture DANGER: Carbon monoxide and draperies. poisoning may lead to death! Do not place clothing or other Early signs of Carbon Monoxide Poisoning: flammable material on or near carbon monoxide poisoning resemble the flu, with the appliance.
  • Page 4: Product Identification

    10. Do not run heater where flammable liquids or SAFETy INFORMATION vapors are used or stored, or u n d e r d u s t y Continued conditions. 1. This appliance, as supplied, is only for use 11. Do not use heater to cook food or burn paper with the type of gas indicated on the rating or other objects.
  • Page 5: Local Codes

    LOCAL CODES PRODUCT FEATURES Install and use the heater with care. Follow all OPERATION local codes. In the absence of local codes, use the This heater is clean burning. It requires no outside latest edition of the National Fuel Gas Code ANSI venting.
  • Page 6 AIR FOR COMbUSTION Confined and Unconfined Space The National Fuel Gas Code, ANSI Z223.1/NFPA AND VENTILATION 54 defines a confined space as a space whose vol- Continued ume is less than 50 cubic feet per 1,000 Btu per hour (4.8 m per kw) of the aggregate input rating of all Exhaust fans, fireplaces, clothes dryers and fuel appliances installed in that space and an unconfined...
  • Page 7: Ventilation Air

    AIR FOR COMbUSTION VENTILATION AIR AND VENTILATION Ventilation Air From Inside Building This fresh air would come from an adjoining un- Continued confined space. When ventilating to an adjoining * Do not include direct-vent gas appliances. unconfined space, you must provide two perma- Direct-vent draws combustion air from the nent openings: one within 12"...
  • Page 8: Installation

    INSTALLATION WARNING: Seal any fresh NOTICE: This heater is intended air vents or ash clean-out doors for use as supplemental heat. located on floor or wall of fire- Use this heater along with your place. If not, drafting may cause primary heating system.
  • Page 9 INSTALLATION Continued Example WARNING: This appliance is equipped for (natural or pro- pane/LP) gas. Field conversion is not permitted. INSTALLATION AND CLEARANCES *Minimum 16 inches from Side Wall FOR VENT-FREE OPERATION Figure 4 - Minimum Clearance for WARNING: Maintain the Combustible to Wall minimum clearances.
  • Page 10: Mantel Clearances

    IMPORTANT: If you cannot meet these minimum INSTALLATION clearances, you must operate heater with chimney Continued flue damper open. Go to Installing Damper Clamp Accessory for Vented Operation, page 12. Noncombustible Requirements for Material Distance (A) Safe Installation Mantel Shelf 12"...
  • Page 11 INSTALLATION INSTALLING DAMPER CLAMP ACCESSORY FOR VENTED Continued OPERATION Note: When used as a vented decorative, appliance NOTICE: Surface temperatures must be installed only in a solid-fuel burning of adjacent walls and mantels be- fireplace with a working flue and constructed of come hot during operation.
  • Page 12 INSTALLATION INSTALLING HEATER ASSEMBLY Continued WARNING: If installing in a sunken fireplace, special care Area of Various Standard Round Flues Diameter Area is needed. You must raise the 5" 20 sq. inches fireplace floor to allow access 6" 29 sq. inches to heater control panel.
  • Page 13 INSTALLATION For propane/LP units, the installer must supply an external regulator. The external regulator will Continued reduce incoming gas pressure. You must reduce CONNECTING TO GAS SUPPLY incoming gas pressure to between 11" and 14" of water. If you do not reduce incoming gas pres- WARNING: This appliance sure, heater regulator damage could occur.
  • Page 14 INSTALLATION CHECKING GAS CONNECTIONS Continued WARNING: Test all gas piping We recommend that you install a sediment trap in and connections for leaks after supply line as shown in Figure 14. Locate sediment installing or servicing. Correct trap where it is within reach for cleaning. Install all leaks at once.
  • Page 15: Operating Heater

    INSTALLATION PRESSURE TESTING HEATER GAS CONNECTIONS Continued 1. Open equipment shutoff valve (see Figure 15). Test Pressures Equal To or Less Than 2. Open main gas valve located on or near gas 1/2 PSIG (3.5 kPa) meter for natural gas or open propane/LP 1.
  • Page 16 OPERATING HEATER WARNING: Burners will Continued come on automatically within LIGHTING one minute when the switch INSTRUCTIONS is in the ON position after the pilot is lit. WARNING 5. Wait five (5) minutes to clear out any gas. • If fireplace has glass doors, Then smell for gas, including near the floor.
  • Page 17 OPERATING HEATER MANUAL LIGHTING Continued PROCEDURE 1. Follow steps 1 through 6 under Lighting 10. Wait one minute and switch selector switch Instructions, page 16. to the ON position to light burners. Note: 2. Depress control knob and light pilot with AUTO is only functional when using match.
  • Page 18 Note: Do not leave the hand-held remote in the OPERATING HEATER AUTO mode close to the fireplace. The radiant Continued heat from the fireplace will turn off the fireplace. Ideally, place the hand-held remote in the center THERMOSTAT SERIES (MODEL of the room facing towards the fireplace.
  • Page 19: Inspecting Burners

    INSPECTING bURNERS BURNER FLAME PATTERN Figure 24 shows correct burner flame pattern. Check pilot flame pattern and burner flame pat- terns often. NOTICE: Do not mistake orange flames with yellow tipping. Dirt PILOT FLAME PATTERN Figure 22 shows a correct pilot flame pattern. or other fine particles are burned Figure 23 shows an incorrect pilot flame pattern.
  • Page 20: Cleaning And Maintenance

    3. Blow air through the ports/slots and holes in CLEANING AND the burner. MAINTENANCE 4. Check the injector holder located at the end of the burner tube again. Remove any large WARNING: Turn off heater particles of dust, dirt, lint or pet hair with a and let cool before cleaning.
  • Page 21: Wiring Diagram

    CLEANING AND SPECIFICATIONS MAINTENANCE CSM2618NR • Rating (Variable): 20,000/30,000 Btu/Hr Continued • Gas Type: Natural Gas Only • Ignition: Piezo • Manifold Pressure: 3.5" - 1.6" W.C. • Inlet Gas Pressure (in. of water): Maximum 10.5" W.C., Minimum* 5.0" W.C.
  • Page 22: 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 23 TROUbLESHOOTING Continued OBSERVED PROBLEM POSSIBLE CAUSE REMEDY ODS/pilot lights but flame goes 1. Control knob not fully pressed in 1. Press in control knob fully out when control knob is re- 2. Control knob not pressed in 2. After ODS/pilot lights, keep leased long enough control knob pressed in 30...
  • Page 24 TROUbLESHOOTING Continued OBSERVED PROBLEM POSSIBLE CAUSE REMEDY Orange flame in burner during 1. Not enough air 1. Check burner(s) for dirt burner combustion and debris. If found, clean burner(s) (see Cleaning and Maintenance, page 20) 2. Gas regulator defective 2. Replace gas regulator Slight smoke or odor during initial 1.
  • Page 25 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 26: Replacement Parts

    REPLACEMENT PARTS ACCESSORIES Note: Use only original replacement parts. This Purchase these heater accessories from your local will protect your warranty coverage for parts dealer. If they can not supply these accessories, call replaced under warranty. DESA at 1-866-672-6040 for referral information. You can also write to the address listed on the back PARTS UNDER WARRANTY page of this manual.
  • Page 27: Parts Central

    ACCESSORIES CLEANING KIT - GCK (Not Shown) Continued For all models. Your vent-free gas appliance re- FB32C (CIRCULATING), FB32NC quires regular cleaning and maintenance to prevent (NON-CIRCULATING) SERIES performance problems. This kit gives you the tools and instructions to make it easy to clean all critical BLOWER (Not Shown) For all models.
  • Page 28: Illustrated Parts Breakdown And Parts List

    ILLUSTRATED PARTS bREAkDOWN MODELS CSM2618NR, CSM2618PR, CSM3624NR AND CSM3624PR www.desatech.com 120163-01A...
  • Page 29: Parts List

    PARTS LIST 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. Grate Assembly • • • • 111800-01 Screw •...
  • Page 30 NOTES _____________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ _____________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ _____________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ www.desatech.com 120163-01A...
  • Page 31 NOTES _____________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ _____________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ _____________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ 120163-01A www.desatech.com...
  • Page 32: Warranty Information

    The only warranty applicable is our standard written warranty. We make no other warranty, expressed or implied. LIMITED WARRANTy COMFORT GLOW VENT-FREE GAS LOG HEATERS DESA warrants this product to be free from defects in materials and components for two (2) years from the date of first purchase, provided that the product has been properly installed, operated and maintained in accordance with all applicable instructions.

This manual is also suitable for:

Csm3624prCsm2618prCsm3624nr

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