DIRECT-VENT FIREPLACE OWNER’S OPERATION AND INSTALLATION MANUAL For more information, visit www.desatech.com NATURAL GAS MODELS V42N-A, VV42NB(1) AND CHDV42NR-B PROPANE/LP GAS MODEL V42P-A AND VV42PB(1) 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. FOR YOUR SAFETY Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.
TABLE OF CONTENTS SAFETY INFORMATION TABLE OF CONTENTS SAFETY INFORMATION ............................................................ 2 CLEANING AND MAINTENANCE ............................................ 29 PRODUCT IDENTIFICATION ..................................................... 3 TROUBLESHOOTING .............................................................. 30 LOCAL CODES ........................................................................... 3 REPLACEMENT PARTS ........................
SAFETY INFORMATION PRODUCT IDENTIFICATION LOCAL CODES SAFETY INFORMATION 3 3 PRODUCT IDENTIFICATION Continued 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. This fireplace reaches high temperatures. Keep children and adults away from hot surfaces to avoid burns or clothing ignition. Fireplace will remain hot for a time after shutdown. Allow surfaces to cool before touching. Carefully supervise young children when they are in the room with fireplace.
PRODUCT FEATURES PRE-INSTALLATION PREPARATION Location and Space Requirements PRODUCT FEATURES These are a few facts that can help you understand and enjoy your direct-vent fireplace: • The venting system may be routed to the outside of your home in several ways. It may vent through the roof (vertical) or it may vent to an outside/exterior wall (horizontal). The vent pipe installation is very important to allow for proper operation.
PRE-INSTALLATION PREPARATION Clearances Framing and Finishing 5 5 PRE-INSTALLATION PREPARATION Continued CLEARANCES Minimum clearances to combustibles for the fireplace are as follows: Back, and sides 0"/mm Perpendicular walls 6" (152mm) 41A5/8" Floor 0"/mm Ceiling to louver opening 42" (1067mm) Front 36" (914mm) Top of Standoffs 0"/mm Vent (See venting instructions for specific venting clearances.) Combustible material with a maximum thickness of 5/8" may be flush with the top front of fireplace .
LOCATION OF TERMINATION CAP LOCATION OF TERMINATION CAP N N D H V L E B C Fixed Closed F B Openable Fixed Closed V Openable V I V G B V B B J X V G G M A V K X V A V TERMINATION CAP A = clearance above grade, veranda, porch, deck, or balcony [*12 inches (30.5mc) minimum] B = clearance to window or door that may be opened [12 inches (30.5cm) minimum] C = clearance to permanently closed window [minimum 12 inches (30.
VENTING INSTALLATION INSTRUCTIONS Installation Precautions 7 7 VENTING INSTALLATION INSTRUCTIONS NOTICE: Read these instructions completely before attempting installation. These models are tested and approved for use with DESA (directvent) pipe components and terminations. The venting system must terminate on the outside of the structure and can not be attached to a chimney or flue system serving a separate solid fuel or gas burning appliance. A direct-vent appliance must have its own venting system.
VENTING INSTALLATION INSTRUCTIONS Installation Planning VENTING INSTALLATION INSTRUCTIONS Continued INSTALLATION PLANNING There are two basic types of direct-vent installation: • Horizontal Termination • Vertical Termination Female Locking Lugs Horizontal Termination Installation IMPORTANT: Horizontal square terminations require only inner portion of wall firestop.
VENTING INSTALLATION INSTRUCTIONS 9 9 Installation Planning (Cont.) VENTING INSTALLATION INSTRUCTIONS Continued WARNING: Do not recess vent termination into any wall. This will cause a fire hazard. 6. 7. 8. Cut Siding Away to Fit Standoff Noncombustible Exterior Wall: Position the horizontal vent cap in the center of the 8 1/2" round hole and attach to the exterior wall with four wood screws provided.
VENTING INSTALLATION INSTRUCTIONS Installation Planning (Cont.) VENTING INSTALLATION INSTRUCTIONS Continued 9. Combustible Exterior Wall Only: Slide wall firestop against interior wall surface and attach with screws provided. See Figure 13 for horizontal termination details. 10. Place fireplace into position and shim with noncombustible material if needed. Nail or screw side flanges to framing to secure unit in place.IMPORTANT: Make sure fireplace is level before securing.
VENTING INSTALLATION INSTRUCTIONS Installation Planning (Cont.) 11 11 VENTING INSTALLATION INSTRUCTIONS Continued Vertical (V) CORNER INSTALLATION Recommended Applications: • Corner ground floor installation • Ground floor installation where pipe vents horizontally through wall (over 12" horizontal pipe) • Basement installation where one foot clearance from ground to termination is possible 46 1/4" min. 57 1/4" min. 69 1/4" min. 81 1/4" min. 93 1/4" min. Horizontal (H) 30" max. 48" max. 60" max.
VENTING INSTALLATION INSTRUCTIONS Installation Planning (Cont.) VENTING INSTALLATION INSTRUCTIONS 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. Venting with Two 90° Elbows Vertical (V) Horizontal (H1) Horizontal (H1) + Horizontal (H2) 5' min. 6' min. 7' min. 8' min. 20' max. 2' max. 4' max. 6' max. 8' max. 8' max. 45°Elbow 6' max. 12' max. 18' max. 20' max.
VENTING INSTALLATION INSTRUCTIONS Installation for Vertical Termination 13 13 VENTING INSTALLATION INSTRUCTIONS Continued INSTALLATION FOR VERTICAL TERMINATION Note: Vertical restrictor must be installed in all vertical installations. 1. Determine the route your vertical venting will take. If ceiling joists, roof rafters, or other framing will obstruct the venting system, consider an offset (see Figure 19) to avoid cutting load bearing members.
VENTING INSTALLATION INSTRUCTIONS Installation for Vertical Termination (Cont.) VENTING INSTALLATION INSTRUCTIONS Continued Vertical Termination Configurations Venting with One 90° Elbow Figures 21 through 24 show four different configurations for vertical termination. Venting with Two 90° Elbows Vertical (V) Horizontal (H1) + Horizontal (H2) 5' min. 6' min. 7' min. 8' min. 20' max. 2' max. 4' max. 6' max. 8' max. 8' max. 45° Elbow Vertical (V) Horizontal (H) 5' min. 6' min. 7' min. 8' min.
VENTING INSTALLATION INSTRUCTIONS Installation for Vertical Termination (Cont.) High Altitude Installation Parts Lists for Venting Kits and Components VENTING INSTALLATION INSTRUCTIONS Continued Vertical Venting V = 40' max. HIGH ALTITUDE INSTALLATION Your DESA direct-vent fireplace has been tested and approved for elevations from 0-2000 feet (USA) and elevations from 0-4500 feet (Canada).
VENTING INSTALLATION INSTRUCTIONS Parts Lists for Venting Kits and Components FIREPLACE INSTALLATION Check Gas Type Installing Optional Blower Accessories VENTING INSTALLATION INSTRUCTIONS 4. Continued 5. PARTS LISTS FOR VENTING KITS AND COMPONENTS (CONT.) Number Description FP-58 SF-58 Firestop Plate Stucco Flashing - For use with HTS-5 FIREPLACE INSTALLATION 6. 7. 8. CHECK GAS TYPE Use proper gas type for the fireplace unit you are installing.
FIREPLACE INSTALLATION Installing Optional Blower Accessories FIREPLACE INSTALLATION Continued Speed Control Switch Bracket Blower Plug-In Control Knob Locknut Control Shaft Duplex Outlet (Located underneath firebox floor against lower right outside wall) Figure 26 - Attaching Speed Control to Firebox hc elba tiw ira Sn V aF B ol w M re oto r nO ffO k ca kc lB al B k eti calB hW k e cal ne tihW B erG 5 .C. 11/0 A.
FIREPLACE INSTALLATION Installing Optional Blower Accessories (Cont.) Installing Gas Piping To Fireplace Location FIREPLACE INSTALLATION Continued Blower Wiring Diagram CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Verify proper operation after servicing. Variable Fan Switch Off Fan Switch (N.O.) 1 2 Black For propane/LP connection only, the installer must supply an external regulator.
FIREPLACE INSTALLATION Installing Gas Piping to Fireplace Location (Cont.) Checking Gas Connections 19 19 FIREPLACE INSTALLATION Continued We recommend that you install a sediment trap/drip leg in supply line as shown in Figure 31. Locate sediment trap/drip leg where it is within reach for cleaning. Install in piping system between fuel supply and fireplace. Locate sediment trap/drip leg where trapped matter is not likely to freeze. A sediment trap traps moisture and contaminants.
FIREPLACE INSTALLATION Checking Gas Connections (Cont.) FIREPLACE INSTALLATION Continued Test Pressures Equal To or Less Than 1/2 PSIG (3.5 kPa) 1. 2. 3. Close equipment shutoff valve (see Figure 33). Pressurize supply piping system by either opening propane/LP supply tank valve for propane/LP gas fireplace or opening main gas valve located on or near gas meter for natural gas fireplace, or using compressed air.
FIREPLACE INSTALLATION Installing Optional Wireless Hand-Held Remote Control - RC, (C)GHRCB, (C)GHRCTB Series 21 21 FIREPLACE INSTALLATION Continued INSTALLING OPTIONAL WIRELESS HANDHELD REMOTE CONTROL - (C)GHRCB AND (C)GHRCTB SERIES NOTICE: Use only alkaline batteries (not included). 3. 4. 5. 6. 7. 1. 2. 3. Installing Remote Receiver 1. 2. Installing 9-Volt Alkaline Battery in Hand-Held Remote Control Unit Open bottom louver and locate the switch bracket on the left. Unscrew the switch bracket.
FIREPLACE INSTALLATION Removing/Replacing Glass Door FIREPLACE INSTALLATION Continued REMOVING/REPLACING GLASS DOOR CAUTION: Do not operate this fireplace with a broken glass door panel or without the glass door panel securely in place. For replacement part information see Replacement Parts, page 33. CAUTION: Wear gloves and safety glasses while handling or removing broken glass. Do not remove if glass is hot. Keep children and pets away from glass.
FIREPLACE INSTALLATION Installing Optional Brick Liner Models BL42DA(SA) and BL42DHA(SA) FIREPLACE INSTALLATION Continued INSTALLING OPTIONAL BRICK LINER MODELS BL42DA(SA) AND BL42DHA(SA) WARNING: If fireplace has been running, turn off and unplug fireplace. Let cool before installing brick liner. Rear Brick Panel This brick liner kit is optional. You may purchase brick liner from your local retailer or see Accessories, page 38. CAUTION: Always handle brick panels with two hands.
FIREPLACE INSTALLATION Installing Logs, Lava Rock and Glowing Embers FIREPLACE INSTALLATION Continued 3 INSTALLING LOGS, LAVA ROCK AND GLOWING EMBERS Each log is marked with a number. These numbers will help you identify the log when installing. It is very important to install these logs exactly as instructed. Do not modify logs. Only use logs supplied with fireplace. Open louvers, remove screen, unlock door latches, and open glass door. See Removing/Replacing Glass Door, steps 1 and 2 on page 22.
FIREPLACE INSTALLATION Installing Logs, Lava Rock and Glowing Embers (Cont.) 25 25 FIREPLACE INSTALLATION Continued 6. 7. 8. Place log #6 (left log) onto left pin of front log (#2) and the smooth surface of rear log (#3) as shown in Figure 50. Make sure it is seated properly. For (V)V42A series only, place log #7 onto right pin of top log (#5) as shown in Figure 50. Make sure it is seated properly Place lava rock along sides and front of firebox bottom in areas that are visible only.
OPERATING FIREPLACE For Your Safety Read Before Lighting Lighting Instructions To Turn Off Gas To Appliance Manual Lighting Procedure OPERATING FIREPLACE FOR YOUR SAFETY READ BEFORE LIGHTING LIGHTING INSTRUCTIONS 1. 2. 3. 4. 5. 6. 7. 8. 9. STOP! Read the safety information above. Open lower louver panel. Disconnect the wire that runs from TH to TPTH from the control valve. Turn off all electric power to the fireplace. Push in gas control knob slightly and turn clockwise to “OFF”.
OPERATING FIREPLACE Optional Hand-Held Remote Operation THERMOSTAT SERIES (MODELS GHRCTB AND CGHRCTB) OPERATING FIREPLACE Continued OPTIONAL HAND-HELD REMOTE OPERATION Note: All remote control accessories must be purchased separately (see Accessories, page 38). Follow instructions included with the remote control. NOTICE: You must light the pilot before using the hand-held remote control unit. See Lighting Instructions, page 26. After lighting, let pilot flame burn for about one minute.
OPERATING FIREPLACE Optional Hand-Held Remote (Cont.) Operating Optional GWMT1 Wall Mounted Thermostat Operating Optional Blower Accessory INSPECTING BURNERS Pilot Assembly Burner Flame Pattern OPERATING FIREPLACE INSPECTING BURNERS Continued Check pilot flame pattern and burner flame patterns often. 2. PILOT ASSEMBLY The receiver continuously receives signals from the handheld remote to control the room temperature.
CLEANING AND MAINTENANCE Glass Door Pilot and Burners Logs Venting System 29 29 CLEANING AND MAINTENANCE WARNING: Turn off fireplace and let cool before cleaning. CAUTION: You must keep control areas, burners, and circulating air passageways of fireplace clean. Inspect these areas of fireplace before each use. Have fireplace inspected yearly by a qualified service person. Fireplace may need more frequent cleaning due to excessive lint from carpeting, bedding material, pet hair, etc.
TROUBLESHOOTING TROUBLESHOOTING Note: For additional help, visit DESA’s technical service web site at www.desatech.com. WARNING: Turn off heater and let cool before servicing. Only a qualified service person should service and repair heater. Note: All troubleshooting items are listed in order of operation. CAUTION: Never use a wire, needle, or similar object to clean pilot. This can damage pilot unit.
TROUBLESHOOTING 31 31 TROUBLESHOOTING Continued OBSERVED PROBLEM POSSIBLE CAUSE REMEDY Burner does not light after pilot is lit 1. Burner orifice clogged 1. Clean burner (see Cleaning and Maintenance, page 29) or replace burner orifice 2. Contact local propane/LP or natural gas company 3. Reconnect leads 2. Inlet gas pressure is too low 3. Thermopile leads disconnected or improperly connected 4. Thermopile is defective Delayed ignition burner 1. Manifold pressure is too low 2.
TROUBLESHOOTING 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. Follow the gas supplier’s instructions. • If you cannot reach your gas supplier, call the fire department. • • • • OBSERVED PROBLEM POSSIBLE CAUSE REMEDY Fireplace produces unwanted odors 1. Gas leak. See Warning statement above 1.
REPLACEMENT PARTS SPECIFICATIONS SERVICE HINTS TECHNICAL SERVICE REPLACEMENT PARTS SERVICE HINTS Note: Use only original replacement parts. This will protect your warranty coverage for parts replaced under warranty. When Gas Pressure Is Too Low PARTS UNDER WARRANTY Contact authorized retailers of this product. If they can not supply original replacement part(s), call DESA’s Customer Service Department at 1-866-672-6040.
ILLUSTRATED PARTS BREAKDOWN Models V42N-A, VV42NSB(1), VV42NHB(1), V42P-A, V42PSB(1), VV42PHB(1), and CHDV42NR-B ILLUSTRATED PARTS BREAKDOWN MODELS V42N-A, VV42NSB(1), VV42NHB(1), V42P-A, V42PSB(1), VV42PHB(1) AND CHDV42NR-B 10-6 6 10-5 7 10-7 8 4 1 10-2 10-1 9 11 3 10-4 21 10-3 19 12 14 13 15 20 18 22 2 17 16 5 16 For more information, visit www.desatech.
PARTS LIST Models V42N-A, VV42NSB(1), VV42NHB(1), V42P-A, V42PSB(1), VV42PHB(1), and CHDV42NR-B PARTS LIST This list contains replaceable parts used in your fireplace. When ordering parts, follow the instructions listed under Replacement Parts on page 33 of this manual. VV42NSB(1) VV42NHB(1) KEY V42N-A VV42PSB(1) NO.
ILLUSTRATED PARTS BREAKDOWN Models V42N-A, VV42NSB(1), VV42NHB(1), V42P-A, VV42PSB(1), VV42PHB(1), CHDV42NR-B ILLUSTRATED PARTS BREAKDOWN 4 BURNER ASSEMBLY FOR MODELS V42N-A, VV42NSB(1), VV42NHB(1), V42P-A, VV42PSB(1), VV42PHB(1), CHDV42NR-B 3 2 21 5 20 22 19 6 7 1 8 19 17 9 16 15 10 14 18 13 12 11 For more information, visit www.desatech.
PARTS LIST Models V42N-A, VV42NSB(1), VV42NHB(1), V42P-A, VV42PSB(1), VV42PHB(1), CHDV42NR-B PARTS LIST BURNER ASSEMBLY FOR MODELS V42N-A, VV42NSB(1), VV42NHB(1), V42P-A, VV42PSB(1), VV42PHB(1) CHDV42NR-B This list contains replaceable parts used in your fireplace. When ordering parts, follow the instructions listed under Replacement Parts on page 33 of this manual. KEY NO.
ACCESSORIES ACCESSORIES Notice: All accessories may not be available for all fireplace models. Purchase these fireplace accessories from your local retailer. If they can not supply these accessories, call DESA’s Sales Department at 1-866-672-6040. for information. You can also write to the address listed on the back page of this manual.
ACCESSORIES OWNER'S REGISTRATION FORM 39 39 In order to provide better customer service for this and future purchases, we recommend that you register your product with us. You can register online at www.desatech.com. If access to our website is not available to you, please complete this Owner’s Registration Form and mail to the address on the back of this owner’s manual. Please provide the following product information: Brand: (Comfort Glow, Vanguard, etc.) Model: (EFP33PR, VTGH33NR, etc.
TAPE 40 Postage Required 2701 Industrial Drive P.O. Box 90004 Bowling Green, KY 42102-9004 For more information, visit www.desatech.
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WARRANTY INFORMATION KEEP THIS WARRANTY Model Serial No. Date Purchased Always specify model and serial numbers when communicating with the factory. We reserve the right to amend these specifications at any time without notice. The only warranty applicable is our standard written warranty. We make no other warranty, expressed or implied.