Instruction/ maintenance manual of the product CFS18NR Desa
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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.
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.
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*.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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 Bo.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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 1.
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.
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.
An important point after buying a device Desa CFS18NR (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Desa CFS18NR yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Desa CFS18NR - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Desa CFS18NR you will learn all the available features of the product, as well as information on its operation. The information that you get Desa CFS18NR will certainly help you make a decision on the purchase.
If you already are a holder of Desa CFS18NR, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Desa CFS18NR.
However, one of the most important roles played by the user manual is to help in solving problems with Desa CFS18NR. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Desa CFS18NR along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
