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OWNER'S OPERATION AND INSTALLATION MANUAL
Patent Pending
NATURAL GAS MODELS (V)KC42N SERIES
PROPANE/LP GAS MODELS (V)KC42P SERIES
WARNING: If the information in this manual is not
followed 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 this manual with the appliance.
CONSUMER: Retain this manual for future reference.
For more information, visit www.desatech.com
DIRECT-VENT FIREPLACE

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  • Page 1 DIRECT-VENT FIREPLACE OWNER’S OPERATION AND INSTALLATION MANUAL Patent Pending NATURAL GAS MODELS (V)KC42N SERIES PROPANE/LP GAS MODELS (V)KC42P SERIES WARNING: If the information in this manual is not followed 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 ..............2 Cleaning and Maintenance ........ 31 Product Identification ........... 4 Troubleshooting ..........33 Local Codes............5 Specifications ............ 37 Product Features ..........5 Replacement Parts ..........37 Pre-Installation Preparation ......... 5 Service Hints ............. 37 Location of Termination Cap ........
  • Page 3 SAFETy Continued Carbon Monoxide Poisoning: Early signs WARNING: Do not allow fans of carbon monoxide poisoning resemble the to blow directly into the fireplace. flu, with headaches, dizziness or nausea. If you have these signs, the fireplace may not Avoid any drafts that alter burner be working properly.
  • Page 4: Product Identification

    SAFETy Continued 2. If you smell gas from carpeting, bedding material, etc. • shut off gas supply Turn off the gas valve and pilot light before • do not try to light any appliance cleaning fireplace. • do not touch any electrical switch; do 6.
  • Page 5: Local Codes

    PRE-INSTALLATION PREPARATION LOCATION AND SPACE REqUIREMENTS Determine the safest and most efficient loca- tion for your DESA Heating, LLC direct-vent Flush with a wall fireplace. Make sure that rafters and wall studs are not in the way of the venting system.
  • Page 6 PRE-INSTALLATION PREPARATION Continued • If your fireplace is to be installed directly on CLEARANCES carpeting, vinyl tile or any combustible ma- Minimum clearances to combustibles for the terial other than wood, it must be installed fireplace are as follows: on a metal or wood panel extending the full *Back and sides 0"...
  • Page 7 PRE-INSTALLATION PREPARATION Continued Wall " Top of Louver Opening " 23" Horizontal Vent " Vertical Vent Figure 4 - Framing Clearances for Installation Against an Exterior Wall Mantel from Mantel Top of Louver Ref. Depth Ref. Opening " " " 14"...
  • Page 8: Location Of Termination Cap

    LOCATION OF TERMINATION CAP Fixed Openable Fixed Closed Closed Openable TERMINATION CAP AIR SUPPLY INLET GAS METER RESTRICTED AREA (TERMINATION PROHIBITED) I = clearance to service regulator vent outlet [*72" (182.9 cm) A = clearance above grade, veranda, porch, deck, or balcony [*12"...
  • Page 9: Venting Installation

    NOTICE: Do not seal termination These models are tested and approved for cap to vent pipe. Cap must be use with DESA Heating, LLC (direct-vent) pipe removable for vent inspection components and terminations. and maintenance. The venting system must terminate on the out-...
  • Page 10 VENTING INSTALLATION Continued INSTALLATION PLANNING 5. Carefully determine location where vent pipe assembly will penetrate outside There are two basic types of direct-vent wall. Center of hole should line up with installation: center line of horizontal vent pipe. Mark • Horizontal Termination wall for a 11 "...
  • Page 11 VENTING INSTALLATION Continued WARNING: Do not recess Apply Mastic to All vent termination into any wall. Four Sides This will cause a fire hazard. Vent Cap 6. Noncombustible Exterior Wall: Position horizontal vent cap in center of 8 " round hole and attach to exterior wall with four wood screws provided.
  • Page 12 VENTING INSTALLATION Continued Minimum Pipe GROUND FLOOR INSTALLATION Siding Standoff Overlap 1 " Recommended Applications: • Installation using cabinet surrounds Direct-Vent • Through the wall using round or square Pipe Screws termination (up to 12" adjustable pipe) • NOT FOR CORNER INSTALLATION Wall Firestop Adjustable...
  • Page 13 VENTING INSTALLATION Continued CORNER INSTALLATION Required Recommended Applications: Vertical (V) Vertical Pipe Horizontal (H) " min. None 30" max. • Corner ground floor installation " min. 1 ft. 48" max. • Ground floor installation where pipe vents " min. 2 ft. 60"...
  • Page 14 VENTING INSTALLATION Continued HORIZONTAL SYSTEM INSTALLATION USING TWO 90° ELBOWS The following configurations show the minimum vertical rise requirements for a horizontal system using two 90° elbows. 45° Elbow Venting with Two 90° Elbows Horizontal (H Vertical (V) Horizontal (H Horizontal (H 5' min.
  • Page 15 VENTING INSTALLATION Continued INSTALLATION FOR VERTICAL should be framed to 11 " x 11 " inside dimensions, as shown in Figure 9 on page TERMINATION 10 using framing lumber the same size as Note: Vertical restrictor must be installed in ceiling joists.
  • Page 16 VENTING INSTALLATION Continued 5. Place flashing over pipe section(s) ex- similar factors may cause poor draft or tending through roof. Secure base of down-drafting in high winds. Increasing flashing to roof and framing with roofing vent height may solve this problem. nails.
  • Page 17 HIGH ALTITUDE INSTALLATION by changing the existing burner orifice to a smaller size. Reduce input 4% for each Your DESA Heating, LLC direct-vent fireplace 1000 feet above sea level. Check with your has been tested and approved for elevations local gas company for proper orifice size from 0-2000 feet (USA) and elevations from identification.
  • Page 18 Termination Kit (Includes Round PARTS LIST FOR VENTING KITS Termination, Wall Firestop, 45° Elbow) AND COMPONENTS HHT-58 High Wind Round Horizontal DESA (5"/8") Pipe & Vent Kits Termination Kit, Galvanized Number Description HTS-58 Horizontal Square Termination, P58-6 6" Section Double Wall Pipe,...
  • Page 19: Fireplace Installation

    FIREPLACE 5. Mount speed control box to switch bracket by placing plastic control shaft forward INSTALLATION through round opening in switch bracket (see Figure 27). CHECK GAS TYPE 6. While supporting speed control, secure Use proper gas type for the fireplace unit you control shaft with lock nut by pushing are installing.
  • Page 20 FIREPLACE INSTALLATION Continued 3. Place blower against lower rear wall of CAUTION: Never touch the firebox outer wrapper with exhaust port di- rected upward and thermodisc positioned blower wheel while in operation. up near fireplace bottom. Thermodisc must be oriented near fireplace bottom 9.
  • Page 21 FIREPLACE INSTALLATION Continued 7. Check to make sure that power cord is INSTALLING GAS PIPING TO completely clear of blower wheel and FIREPLACE LOCATION that there are no foreign objects in blower wheel. Also double check all wire leads WARNING: A qualified and make sure wire routing is not pinched service person must connect or in a precarious position.
  • Page 22 FIREPLACE We recommend that you install a sediment trap/drip leg in supply line as shown in Figure INSTALLATION 32. Locate sediment trap/drip leg where it is Continued within reach for cleaning. Install in piping sys- tem between fuel supply and fireplace. Locate CAUTION: Use only new, sediment trap/drip leg where trapped matter black iron or steel pipe.
  • Page 23 FIREPLACE 4. Check all joints of gas supply piping sys- tem. Apply noncorrosive leak detection INSTALLATION fluid to all joints. Bubbles forming show a Continued leak. Correct all leaks at once. 5. Reconnect fireplace and equipment To Gas Supply shutoff valve to gas supply. Check recon- (Natural) Equipment nected fittings for leaks.
  • Page 24 FIREPLACE INSTALLATION Continued PRESSURE TESTING FIREPLACE GAS INSTALLING OPTIONAL WIRELESS CONNECTIONS HAND-HELD REMOTE CONTROL 1. Open equipment shutoff valve (see Figure HRC100 AND HRC200 SERIES 34, page 23). NOTICE: Use only alkaline bat- 2. Open propane/LP supply tank valve for teries (not included).
  • Page 25 FIREPLACE INSTALLATION Continued Installing 9-Volt Alkaline Battery in Hand- Removing Louver Panels Held Remote Control Unit Remove top and bottom louver panels by 1. Remove battery cover on back of remote simultaneously pulling both top end spring control unit. latches towards center of appliance until they are disengaged from locating holes 2.
  • Page 26 FIREPLACE INSTALLATION Continued 4. Remount new frame at hinge with five WARNING: The glass door new screws before closing door. This will ensure seating of gasket. must be securely in place before 5. Close glass door frame. Lock latches by running this fireplace.
  • Page 27: Operation

    FIREPLACE OPERATION INSTALLATION FOR YOUR SAFETY Continued READ BEFORE LIGHTING 7. Remove three screws from deflector WARNING: If you do not fol- shield on the inside top of firebox. Set low these instructions exactly, shield and screws aside. a fire or explosion may result 8.
  • Page 28 OPERATION MANUAL LIGHTING PROCEDURE Continued 1. Remove glass door (see Removing/Re- 6. The pilot is located by the main burner and placing Glass Door, page 25). should not require accessing for lighting. 2. Follow steps 1 through 8 under Lighting 7.
  • Page 29 OPERATION Note: Do not leave the hand-held remote in the AUTO mode close to the fireplace. The radiant Continued heat from the fireplace will turn off the fireplace. ON/OFF SERIES MODEL HRC100 Ideally, place the hand-held remote in the center of the room facing towards the fireplace.
  • Page 30: Inspecting Burners

    OPERATION Continued OPERATING OPTIONAL OPERATING OPTIONAL GWMT1 - WALL MOUNTED BLOWER ACCESSORY THERMOSTAT Locate blower controls by opening lower louver panel on fireplace. Blower controls are WARNING: Do not con- located on right side of switch bracket to the left just inside louver panel. nect the thermostat to a power The BK manual blower and BKT thermostati- source.
  • Page 31: Cleaning And Maintenance

    INSPECTING bURNERS Continued BURNER FLAME PATTERN Burner flames will be steady, not lifting or float- ing. Flame patterns will be different from unit to unit and will vary depending on installation type and weather conditions. If vent configuration is installed incorrectly, flames will lift or "ghost".
  • Page 32 CLEANING AND MAINTENANCE Continued If glass has been broken, carefully remove LOGS glass door (see Removing/Replacing Glass • If you remove logs for cleaning, refer to Door, page 25). Vacuum all glass pieces with Installing Lava Rock and Glowing Embers, a shop vac.
  • Page 33: Troubleshooting

    TROUbLEShOOTING WARNING: Turn off 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 pilot. This can damage pilot unit. Note: All troubleshooting items are listed in order of operation. OBSERVED PROBLEM POSSIBLE CAUSE REMEDY...
  • Page 34 TROUbLEShOOTING Continued OBSERVED PROBLEM POSSIBLE CAUSE REMEDY Pilot lights but flame goes 1. Gas control knob not fully 1. Press in gas control knob out when control knob is pressed in fully released 2. Gas control knob not 2. After pilot lights, keep gas pressed in long enough control knob pressed in 30 seconds...
  • Page 35 TROUbLEShOOTING Continued OBSERVED PROBLEM POSSIBLE CAUSE REMEDY Heater produces a whistling 1. Turning gas control knob to 1. Turn gas control knob to LO noise when burner is lit HI position when burner is position and let warm up for cold a minute 2.
  • Page 36 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 37: Specifications

    • fireplace will not produce specified heat serial numbers of your heater ready. • propane/LP gas supply might be low (pro- You can also visit DESA Heating, LLC’s web pane/LP units only) site at www.desatech.com. You may feel your gas pressure is too low. If so, contact your local gas supplier.
  • Page 38: Parts

    PARTS MODELS KC42N, VKC42N, KC42P AND VKC42P SERIES www.desatech.com 116239-01K...
  • Page 39 PARTS MODELS KC42N, VKC42N, KC42P AND VKC42P SERIES This list contains replaceable parts used in your fireplace. When ordering parts, follow the instructions listed under Replacement Parts on page 37 of this manual. NO. PART NO. DESCRIPTION QTY. Firebox Assembly Face Weldment 108328-01 Door Assembly 108328-02 Door Assembly (V Models Only)
  • Page 40 PARTS BURNER ASSEMBLY MODELS KC42N, VKC42N, KC42P AND VKC42P SERIES www.desatech.com 116239-01K...
  • Page 41 PARTS BURNER ASSEMBLY MODELS KC42N, VKC42N, KC42P AND VKC42P SERIES This list contains replaceable parts used in your fireplace. When ordering parts, follow the instructions listed under Replacement Parts on page 37 of this manual. NO. PART NO. DESCRIPTION QTY. Burner Pan Assembly Base Grate Firebox Base Bottom...
  • Page 42: Accessories

    PT42B - Brushed Brass dealer. If they can not supply these accessories PT42P - Platinum call DESA Heating, LLC at 1-866-672-6040 for PT42PB - Polished Brass information. You can also write to the address listed on the back page of this manual.
  • Page 43 ACCESSORIES Continued RECEIVER AND HAND-HELD THERMOSTAT REMOTE CONTROL RECEIVER AND HAND-HELD KIT - HRC200 SERIES ON/OFF REMOTE CONTROL KIT Allows the fireplace to be operated in a manu- HRC100 SERIES ally or thermostatically-controlled mode. You Allows the fireplace to be turned on and off can adjust your heat settings and turn the conveniently.
  • Page 44: Warranty

    This is DESA Heating, LLC’s exclusive warranty, and to the full extent allowed by law; this express warranty excludes any and all other warranties, express or implied, written or verbal and limits the duration of any and all implied warranties, including warranties of merchantability and fitness for a particular purpose to two (2) years on new products and 30 days on factory reconditioned products from the date of first purchase.

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