Desa CFS18NRA - Manuals - manualsarea.com

Page 2 - DANGER: Carbon monoxide; WARNINGS; WARNING: Any change to

2 104416 UNVENTED NATURAL GAS LOG HEATER DESA INTERNATIONAL 1. This appliance is only for use with thetype of gas indicated on the rating plate.This appliance is not convertible for usewith other gases. 2. If you smell gas• shut off gas supply• do not try to light any appliance• do not touch any ele...

Page 3 - OWNER’S MANUAL; Figure 1 - VS24NR Shown; LOCAL CODES; OPERATION; Control Knob; CAUTION: Do not remove the

3 104416 OWNER’S MANUAL AUT O MAN OFF ST ATUS ON LO HI TEMP PRODUCTIDENTIFICATION Figure 1 - VS24NR Shown LOCAL CODES Install and use heater with care. Follow alllocal codes. In the absence of local codes, usethe latest edition of The National Fuel GasCode ANS Z223.1, also known as NFPA 54*. *Availa...

Page 4 - Unusually Tight Construction; per

4 104416 UNVENTED NATURAL GAS LOG HEATER DESA INTERNATIONAL Today’s homes are built more energy effi-cient than ever. New materials, increasedinsulation, and new construction methodshelp reduce heat loss in homes. Home ownersweather strip and caulk around windows anddoors to keep the cold air out an...

Page 5 - DETERMINING FRESH-AIR FLOW FOR HEATER LOCATION; Determining if You Have a Confined or Unconfined Space; Continued

5 104416 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 ...

Page 6 - Figure 2 - Ventilation Air from Inside Building; Ventilation Air From Outdoors; Do not provide openings; Figure 3 - Ventilation Air from Outdoors

6 104416 UNVENTED NATURAL GAS LOG HEATER DESA INTERNATIONAL AIR FORCOMBUSTION ANDVENTILATION Continued VENTILATION AIR Ventilation Air From InsideBuilding This fresh air would come from an adjoiningunconfined space. When ventilating to anadjoining unconfined space, you must pro-vide two permanent op...

Page 7 - INSTALLATION; CHECK GAS TYPE; B. Clearances from the top of the fireplace

7 104416 OWNER’S MANUAL LOG SIZING REQUIREMENTS Minimum Firebox Size Log Front Rear* Size Height Depth Width Width 18" 17" 14" 20" 14" 24" 17" 14" 26" 18" 30" 17" 14" 32" 22" MINIMUM FIREPLACE CLEARANCE TO COMBUSTIBLE MATERIALS Log Size Sid...

Page 8 - Requirements for Safe Installation; Noncombustible material OK.; If Using Mantel; If using a mantel, proceed to If Using; Installing Damper; If you cannot meet these

8 104416 UNVENTED NATURAL GAS LOG HEATER DESA INTERNATIONAL Heat ResistantMaterial (A) Figure 5 - Heat Resistant Material (Slate, Marble, Tile, etc.) Above Fireplace NoncombustibleMaterial Distance (A) Requirements for Safe Installation 12" or more Noncombustible material OK. Between 8" and ...

Page 9 - MANTEL CLEARANCES; Figure 6 - Minimum Mantel Clearances Without Using Hood; A. If installing appliance on the floor level,; flue damper open

9 104416 OWNER’S MANUAL Minimum Non-Combustible Material Minimum Non-Combustible Material Height Distances to Underside ofMantel Top of FireplaceOpening Underside ofMantel Shelf 12" 8" (A) 18" 14" 20" 16 3/4 " 22" 18 1/2 " 24" 20" All minimum distances arein i...

Page 10 - Installation Items Needed; Figure 10 - Attaching Damper Clamp; Damper; Manufactured Fireplace

10 104416 UNVENTED NATURAL GAS LOG HEATER DESA INTERNATIONAL INSTALLATION Continued INSTALLING HEATER BASEASSEMBLY WARNING: You must secure this heater to fireplace floor. Ifnot, heater will move when youadjust controls. Moving heatermay cause a gas leak. WARNING: If installing in a sunken fireplace...

Page 11 - • manual shutoff valve *; WARNING: Never connect; Figure 13 - Gas Connection

11 104416 OWNER’S MANUAL Installation Items Needed Before installing heater, make sure you havethe items listed below. • piping (check local codes) • sealant (resistant to propane/LP gas) • manual shutoff valve * • test gauge connection * • sediment trap • tee joint • pipe wrench CONNECTING TO GASSU...

Page 12 - Open; Figure 15 - Checking Gas Joints; Gas Meter; Figure 14 - Manual Shutoff Valve; WARNING: Never use an open; Correct all leaks at once.

12 104416 UNVENTED NATURAL GAS LOG HEATER DESA INTERNATIONAL ON POSIT O POS Open Closed ManualShutoffValve Figure 15 - Checking Gas Joints Gas Meter Manual Shutoff Valve Gas ControlLocation Test Pressures Equal To or Less Than1/2 PSIG 1. Close manual shutoff valve (see Fig-ure 14). 2. Pressurize sup...

Page 13 - INSTALLING LOGS; Metal Grate Bar

13 104416 OWNER’S MANUAL 4 4 INSTALLING LOGS Figure 16- Installing Front Log (#1) Figure 17 - Installing Middle Log (#2) Figure 18 - Installing Rear Log (#3) WARNING: Failure to posi- tion the parts in accordance withthese diagrams or failure to useonly parts specifically approvedwith this heater ma...

Page 14 - FOR YOUR SAFETY; WARNING; Figure 20 - Control Knob and Ignitor Button Location

14 104416 UNVENTED NATURAL GAS LOG HEATER DESA INTERNATIONAL O F F PI LOT O N LO IH AUTOOFFON OPERATINGHEATER FOR YOUR SAFETY READ BEFORE LIGHTING WARNING: If you do not fol- low these instructions exactly, afire or explosion may result caus-ing property damage, personalinjury or loss of life. A. Th...

Page 15 - Shutting Off Heater; MANUAL LIGHTING; Ignitor Electrode; WARNING: Make sure the

15 104416 OWNER’S MANUAL OPERATINGHEATER Continued TO TURN OFF GAS TO APPLIANCE 1. Follow steps 1 through 6 under Light-ing Instructions, page 14. 2. Depress control knob and light pilotwith match. 3. Keep control knob pressed in for 30seconds after lighting pilot. After 30seconds, release control k...

Page 16 - Flame Adjustment Knob; All remote control accessories must; Thermostat Control Operation; Shows Temperature Setting; OPTIONAL REMOTE; This remote control; Do not leave the se-; Be sure to press the; The hand-held remote

16 104416 UNVENTED NATURAL GAS LOG HEATER DESA INTERNATIONAL TEMP STATUS HI LO MAN ON AUTO OFF O F F PIL O T O N LO IH ONOFFREMOTE OPERATINGHEATER Continued Figure 22 - Setting the Selector switch, Control Knob, and Flame Adjustment Knob forRemote Operation Selector Toggle Switch (OptionalRemote Con...

Page 17 - WARNING: If yellow tipping; Figure 24 - Correct Pilot Flame Pattern; PILOT FLAME PATTERN; • turn heater off (see To Turn Off Gas to; Thermocouple

17 104416 OWNER’S MANUAL WARNING: If yellow tipping occurs, your heater could pro-duce increased levels of carbonmonoxide. If front burner flamepattern shows yellow tipping, fol-low instructions at bottom of thispage. Yellow flame on rear burneris normal. Thermocouple Pilot Burner Figure 24 - Correc...

Page 18 - WARNING: Turn off heater; LOGS; Injector Holder; Figure 29 - Pilot Inlet Air Hole; Pilot Assembly; PARTS UNDER WARRANTY

18 104416 UNVENTED NATURAL GAS LOG HEATER DESA INTERNATIONAL CLEANING ANDMAINTENANCE WARNING: Turn off heater and let cool before cleaning. CAUTION: You must keep control areas, burners, and cir-culating air passageways ofheater clean. Inspect these areasof heater before each use. Haveheater inspect...

Page 19 - POSSIBLE CAUSE; TROUBLESHOOTING; REMEDY; All troubleshooting items are listed in

19 104416 OWNER’S MANUAL WARNING: Turn off and un- plug heater and let cool beforeservicing. Only a qualified ser-vice person should service andrepair heater. CAUTION: Never use a wire, needle, or similar object to cleanODS/pilot. This can damage ODS/pilot unit. POSSIBLE CAUSE 1. Ignitor electrode n...

Page 20 - nance, page 18) or replace burner orifice; OBSERVED PROBLEM

20 104416 UNVENTED NATURAL GAS LOG HEATER DESA INTERNATIONAL TROUBLESHOOTING Continued REMEDY 1. Contact local natural gas company2. Clean burner(s) (see Cleaning and Main- tenance, page 18) or replace burnerorifice(s) 3. Contact qualified service person4. Replace burner orifice(s)5. Put remote sele...

Page 21 - IMPORTANT

21 104416 OWNER’S MANUAL REMEDY 1. This is common with most heaters. If noise is excessive, contact qualified ser-vice person 1. Open window to ventilate room. Stop us- ing odor causing products while heateris running 2. Refill supply tank3. Locate and correct all leaks (see Check- ing Gas Connectio...

Page 23 - PARTS LIST; KEY

23 104416 OWNER’S MANUAL PARTS LIST VARIABLE CONTROLCFS18NRA, VS18NRAVS24NRA, VS30NRA This list contains replaceable parts used in your heater. When ordering parts, follow theinstructions listed under Replacement Parts on page18 of this manual. KEY PART NUMBERS NO. VS18NRA/CFS18NRA VS24NRA VS30NRA D...

Page 24 - WIRING DIAGRAM; SPECIFICATIONS; When Gas Pressure Is Too Low; • pilot will not stay lit; When Gas Quality Is Bad; pilot will not stay lit

24 104416 UNVENTED NATURAL GAS LOG HEATER DESA INTERNATIONAL WIRING DIAGRAM AUT O OFF ON Thermopile SPECIFICATIONS 18" Variable 24" Variable 30" Variable Btu (Variable) 16,000/26,000 20,000/33,000 21,500/36,000 Type Gas Natural Gas Only Natural Gas Only Natural Gas Only Ignition Piezo Pi...

Page 25 - FIREPLACE HOOD; ACCESSORIES

25 104416 OWNER’S MANUAL Purchase these heater accessories from yourlocal dealer. If they can not supply theseaccessories, call DESA International’s PartsDepartment at 1-800-972-7879 for referralinformation. You can also write to the ad-dress listed on the back page of this manual. FIREPLACE HOOD Bl...

Page 26 - For information about this warranty write:; KEEP THIS WARRANTY; WARRANTY INFORMATION; Model; INTERNATIONAL; NOT A UPC

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 onstainless steel burners from the date of first purchase, provided that the product has been properly installed, oper...