Desa CFS18NR User Manual

UNVENTED (VENT-FREE)NATURAL GAS LOG HEATERVariable Manually-Controlled Models Also Design-Certified AsVented Decorative AppliancesOWNER’S OPERATION AN

10103449UNVENTED NATURAL GAS LOG HEATERDESA INTERNATIONALInstallation Items Needed• hardware package (provided with heater)• approved flexible gas hos

11103449OWNER’S MANUALInstallation Items NeededBefore installing heater, make sure you havethe items listed below.• piping (check local codes)• sealan

12103449UNVENTED NATURAL GAS LOG HEATERDESA INTERNATIONALONPOSITOPOSOpenClosedManualShutoffValveFigure 15 - Checking Gas JointsTest Pressures Equal To

13103449OWNER’S MANUALTop Middle Log (#4)Figure 20 - Installing Crossover Log (#5)CrossoverLog (#4)HolePegCutoutINSTALLATIONContinuedFigure 19 - Insta

14103449UNVENTED NATURAL GAS LOG HEATERDESA INTERNATIONALIgnitor ElectrodePilot BurnerFigure 22 - Pilot WARNING: Burners will comeon automatically wit

15103449OWNER’S MANUALOPERATINGHEATERContinuedTO TURN OFF GAS TOAPPLIANCE1. Follow steps 1 through 6 under Light-ing Instructions, page 14.2. Depress

16103449UNVENTED NATURAL GAS LOG HEATERDESA INTERNATIONALOPERATINGHEATERContinuedFigure 23 - Setting the Selector Switch, Control Knob, and FlameAdjus

17103449OWNER’S MANUAL WARNING: If yellow tippingoccurs, your heater could pro-duce increased levels of carbonmonoxide. If front burner flamepattern s

18103449UNVENTED NATURAL GAS LOG HEATERDESA INTERNATIONALCLEANING ANDMAINTENANCE WARNING: Turn off heaterand let cool before cleaning. CAUTION: You mu

19103449OWNER’S MANUAL WARNING: Turn off and un-plug heater and let cool beforeservicing. Only a qualified ser-vice person should service andrepair he

2103449UNVENTED NATURAL GAS LOG HEATERDESA INTERNATIONAL1. This appliance is only for use with thetype of gas indicated on the rating plate.This appli

20103449UNVENTED NATURAL GAS LOG HEATERDESA INTERNATIONALTROUBLESHOOTINGContinuedREMEDY1. Contact local natural gas company2. Clean burner(s) (see Cle

21103449OWNER’S MANUALREMEDY1. This is common with most heaters. Ifnoise is excessive, contact qualified ser-vice person1. Open window to ventilate ro

22103449UNVENTED NATURAL GAS LOG HEATERDESA INTERNATIONALREPLACEMENTPARTSNote: Use only original replacement parts.This will protect your warranty cov

23103449OWNER’S MANUALPurchase these heater accessories from yourlocal dealer. If they can not supply theseaccessories, call DESA International’s Part

24103449UNVENTED NATURAL GAS LOG HEATERDESA INTERNATIONALILLUSTRATEDPARTSBREAKDOWNVARIABLE CONTROLCFS18NRVS18NRVS24NRVS30NR891011881213231426276616193

25103449OWNER’S MANUALPARTS LISTCFS18NRVS18NRVS24NRVS30NRThis list contains replaceable parts used in your heater. When ordering parts, follow theinst

LIMITED WARRANTYVENT-FREE NATURAL GAS LOG HEATERSDESA International warrants this product to be free from defects in materials and components for four

3103449OWNER’S MANUALPRODUCTIDENTIFICATIONFigure 1 - VS24NR ShownLOCAL CODESInstall and use heater with care. Follow alllocal codes. In the absence of

4103449UNVENTED NATURAL GAS LOG HEATERDESA INTERNATIONALToday’s homes are built more energy effi-cient than ever. New materials, increasedinsulation,

5103449OWNER’S MANUALDETERMINING FRESH-AIR FLOW FOR HEATER LOCATIONDetermining if You Have a Confined or Unconfined SpaceUse this work sheet to determ

6103449UNVENTED NATURAL GAS LOG HEATERDESA INTERNATIONALAIR FORCOMBUSTION ANDVENTILATIONContinuedVENTILATION AIRVentilation Air From InsideBuildingThi

7103449OWNER’S MANUALMINIMUM FIREPLACECLEARANCE TOCOMBUSTIBLE MATERIALSLog Size Side Wall Ceiling Floor18" 24" 30" 16" 42" 5&

8103449UNVENTED NATURAL GAS LOG HEATERDESA INTERNATIONALHeat ResistantMaterial (A)Figure 5 - Heat Resistant Material (Slate, Marble, Tile, etc.) Above

9103449OWNER’S MANUALMANTEL CLEARANCESIn addition to meeting noncombustible mate-rial clearances, you must also meet requiredclearances between firepl