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Desa CFS18NR manual

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Table of contents for the manual

  • Page 1

    UNVENTED (VENT -FREE) NA TURAL GAS LOG HEA TER Variable Manually-Controlled Models Also Design-Certified As Vented Decorative Appliances OWNER’S OPERA TION AND INST ALLA TION MANUAL Save this manual for future reference WARNING: If the information in this manual is not followed exactly, a fire or explosion may result causing property damage, pers[...]

  • Page 2

    2 103449 UNVENTED NA TURAL GAS LOG HEA TER DESA INTERNA TIONAL 1. This appliance is only for use with the type of gas indicated on the rating plate. This appliance is not convertible for use with other gases. 2. 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 phon[...]

  • Page 3

    3 103449 OWNER’S MANUAL PRODUCT IDENTIFICA TION Figure 1 - VS24NR Shown LOCAL CODES Install and use heater with care. Follow all local codes. In the absence of local codes, use the latest edition of The National Fuel Gas Code ANS Z223 , also known as NFPA 54*. *Available from: American National Standards Institute, Inc. 1430 Broadway New York, NY[...]

  • Page 4

    4 103449 UNVENTED NA TURAL GAS LOG HEA TER DESA INTERNA TIONAL Today’s homes are built more energy effi- cient than ever. New materials, increased insulation, and new construction methods help reduce heat loss in homes. Home owners weather strip and caulk around windows and doors to keep the cold air out and the warm air in. During heating months[...]

  • Page 5

    5 103449 OWNER’S MANUAL DETERMINING FRESH-AIR FLOW FOR HEATER LOCATION Determining if You Have a Confined or Unconfined Space Use this work sheet to determine if you have a confined or unconfined space. Space: Includes the room in which you will install heater plus any adjoining rooms with doorless passageways or ventilation grills between the ro[...]

  • Page 6

    6 103449 UNVENTED NA TURAL GAS LOG HEA TER DESA INTERNA TIONAL AIR FOR COMBUSTION AND VENTILA TION Continued VENTILATION AIR Ventilation Air From Inside Building This fresh air would come from an adjoining unconfined space. When ventilating to an adjoining unconfined space, you must pro- vide two permanent openings: one within 12" of the ceili[...]

  • Page 7

    7 103449 OWNER’S MANUAL MINIMUM FIREPLACE CLEARANCE TO COMBUSTIBLE MATERIALS Log Size Side Wall Ceiling Floor 18" 24" 30" 16" 42" 5" NOTICE: A qualified service per- son must install heater. Follow all local codes. WARNING: Before installing in a solid fuel burning fireplace, the chimney flue and firebox must be clea[...]

  • Page 8

    8 103449 UNVENTED NA TURAL GAS LOG HEA TER DESA INTERNA TIONAL Heat Resistant Material (A) Figure 5 - Heat Resistant Material (Slate, Marble, Tile, etc.) Above Fireplace Noncombustible Material Distance (A) Requirements for Safe Installation 12" or more Noncombustible material OK. Between 8" and 12" Install fireplace hood accessory ([...]

  • Page 9

    9 103449 OWNER’S MANUAL MANTEL CLEARANCES In addition to meeting noncombustible mate- rial clearances, you must also meet required clearances between fireplace opening and mantel shelf. If you do not meet the clear- ances listed below, you will need a hood. Determining Minimum Mantel Clearances If you meet minimum clearance between mantel shelf a[...]

  • Page 10

    10 103449 UNVENTED NA TURAL GAS LOG HEA TER DESA INTERNA TIONAL Installation Items Needed • hardware package (provided with heater) • approved flexible gas hose (not provided) (if allowed by local codes) • sealant (resistant to propane (LP) gas, not provided) • electric drill with 3/16" drill bit Note: Install optional GHRCT Receiver a[...]

  • Page 11

    11 103449 OWNER’S MANUAL Installation Items Needed Before installing heater, make sure you have the items listed below. • piping (check local codes) • sealant (resistant to LP gas) • manual shutof f valv e * • test gauge connection * • sediment trap • tee joint • pipe wrench * An A.G.A. design-certified manual shutoff valve with 1/8[...]

  • Page 12

    12 103449 UNVENTED NA TURAL GAS LOG HEA TER DESA INTERNA TIONAL O N POSI T O PO S Open Closed Manual Shutoff Valve Figure 15 - Checking Gas Joints Test Pressures Equal To or Less Than 1/2 PSIG 1. Close manual shutoff v alve (see Fig- ure 14). 2. Pressurize supply piping system by either using compressed air or opening main gas valv e located on or [...]

  • Page 13

    13 103449 OWNER’S MANUAL Top Middle Log (#4) Figure 20 - Installing Crossover Log (#5) Crossover Log (#4) Hole Peg Cutout INST ALLA TION Continued Figure 19 - Installing Top Log (#4) Hole Peg Peg Bottom Middle Log Hole INSTALLING LOGS Figure 16- Installing Front Logs (#1L and #1R) Figure 17 - Installing Bottom Middle Log (#2) Figure 18 - Installi[...]

  • Page 14

    14 103449 UNVENTED NA TURAL GAS LOG HEA TER DESA INTERNA TIONAL Ignitor Electrode Pilot Burner Figure 22 - Pilot WARNING: Burners will come on automatically within one minute when the selector switch is in the ON position after the pilot is lit. Figure 21 - Control Knob and Ignitor Button Location 4. Press in and tur n control knob clock- wise to t[...]

  • Page 15

    15 103449 OWNER’S MANUAL OPERA TING HEA TER Continued TO TURN OFF GAS TO APPLIANCE 1. Follow steps 1 thr ough 6 under Light- ing Instructions , page 14. 2. Depress contr ol knob and light pilot with match. 3. Keep contr ol knob pressed in f or 30 seconds after lighting pilot. After 30 seconds, release contr ol knob. No w follo w ste ps 9 thr ough[...]

  • Page 16

    16 103449 UNVENTED NA TURAL GAS LOG HEA TER DESA INTERNA TIONAL OPERA TING HEA TER Continued Figure 23 - Setting the Selector Switch, Control Knob, and Flame Adjustment Knob for Remote Operation O F F P I L O T O N L O I H ON OFF REMOTE Selector Switch in Remote Position Control Knob in On Position Flame Adjustment Knob TEMP ST A TUS HI LO MAN ON A[...]

  • Page 17

    17 103449 OWNER’S MANUAL WARNING: If yellow tipping occurs, your heater could pro- duce increased levels of carbon monoxide. If front burner flame pattern shows yellow tipping, fol- low instructions at bottom of this page. Yellow flame on rear burner is normal. Thermocouple Pilot Burner Figure 25 - Correct Pilot Flame Pattern Figure 26 - Incorrec[...]

  • Page 18

    18 103449 UNVENTED NA TURAL GAS LOG HEA TER DESA INTERNA TIONAL CLEANING AND MAINTENANCE WARNING: Turn off heater and let cool before cleaning. CAUTION: You must keep control areas, burners, and cir- culating air passageways of heater clean. Inspect these areas of heater before each use. Have heater inspected yearly by a quali- fied service person.[...]

  • Page 19

    19 103449 OWNER’S MANUAL WARNING: Turn off and un- plug heater and let cool before servicing. Only a qualified ser- vice 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. POSSIBLE CAUSE 1. Ignitor electrode not connected to igni- tor cable 2. Ignitor [...]

  • Page 20

    20 103449 UNVENTED NA TURAL GAS LOG HEA TER DESA INTERNA TIONAL TROUBLESHOOTING Continued REMEDY 1. Contact local natural gas company 2. Clean burner(s) (see Cleaning and Main- tenance , page 18) or replace burner orifice(s) 3. Contact qualified service person 4. Replace burner orifice(s) 5. Put remote selector in ON position 6. See W iring Diagram[...]

  • Page 21

    21 103449 OWNER’S MANUAL REMEDY 1. This is common with most heaters. If noise is excessi ve, contact qualified ser - vice person 1. Open window to ventilate room. Stop us- ing odor causing products while heater is running 2. Refill supply tank 3. Locate and correct all leaks (see Check- ing Gas Connections , page 12) 1. Open window and/or door fo[...]

  • Page 22

    22 103449 UNVENTED NA TURAL GAS LOG HEA TER DESA INTERNA TIONAL REPLACEMENT PA R T S Note: Use only original replacement parts. This will protect your warranty coverage for parts replaced under warranty. PARTS UNDER WARRANTY Contact authorized dealers of this product. If they can’t supply original replacement part(s), call DESA International’s [...]

  • Page 23

    23 103449 OWNER’S MANUAL Purchase these heater accessories from your local dealer. If they can not supply these accessories, call DESA International’s Parts Department at 1-800-972-7879 for referral information. You can also write to the ad- dress listed on the back page of this manual. FIREPLACE HOOD Black - GA6050 Brass - GA6052 Antique Brass[...]

  • Page 24

    24 103449 UNVENTED NA TURAL GAS LOG HEA TER DESA INTERNA TIONAL ILLUSTRA TED PA R T S BREAKDOWN VARIABLE CONTROL CFS18NR VS18NR VS24NR VS30NR 8 9 10 11 8 8 12 13 23 14 26 27 6 6 16 19 31 21 22 29 30 17 24 20 15 28 18 10-1 10-2 6 7 25 13 4 5 3 2 1R 1L[...]

  • Page 25

    25 103449 OWNER’S MANUAL P ARTS LIST CFS18NR VS18NR VS24NR VS30NR This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 22 of this manual. KEY PART NUMBERS NO. VS18NR/CFS18NR VS24NR VS30NR DESCRIPTION QTY. 1L 103580-01 103580-03 Left Front Log (1L) 1 1R 103580[...]

  • Page 26

    LIMITED WARRANTY VENT-FREE NATURAL GAS LOG HEATERS DESA International warrants this product to be free from defects in materials and components for four (4) years and five (5) years on stainless steel burners from the date of first purchase, provided that the product has been properly installed, operated and maintained in accordance with all applic[...]