DIRECT-VENT FIREPLACE OWNER’S OPERATION AND INSTALLATION MANUAL For more information, visit www.desatech.com NATURAL GAS MODEL (V)K42N SERIES PROPANE/LP GAS MODEL (V)K42P 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. 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 ............................................ 27 PRODUCT IDENTIFICATION ..................................................... 3 TROUBLESHOOTING .............................................................. 28 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. Horizontal installations using round termination require exterior portion of wall firestop. 1.
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. Cut Siding Away to Fit Standoff Noncombustible Exterior Wall: Position the horizontal vent 1 7. 8. cap in the center of the 8 /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. Vertical (V) Horizontal (H) 5' min. 6' min. 7' min. 8' min. 20' max. 2' max. 4' max. 6' max. 8' max. 8' max. Venting with Two 90° Elbows Vertical (V) Horizontal (H1) + Horizontal (H2) 5' min. 6' min. 7' min. 8' min. 20' max.
VENTING INSTALLATION INSTRUCTIONS Installation for Vertical Termination (Cont.) High Altitude Installation Parts Lists for Venting Kits and Components VENTING INSTALLATION INSTRUCTIONS Continued 15 15 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).
FIREPLACE INSTALLATION 16 Check Gas Type Installing Optional Blower Accessories FIREPLACE INSTALLATION . CHECK GAS TYPE 3. Use proper gas type for the fireplace unit you are installing. If your gas supply is not correct, do not install fireplace. See retailer where you purchased the fireplace for proper fireplace according to your gas type or to purchase gas conversion kit (see Accessories, page 36). 4. INSTALLING OPTIONAL BLOWER ACCESSORIES 5.
FIREPLACE INSTALLATION Installing Optional Blower Accessories (Cont.) 17 17 FIREPLACE INSTALLATION Continued 9. Check to make sure that the power cord is completely clear of the blower wheel and that there are no other foreign objects in blower wheel. Turn blower on and check for operation. Turn blower off by turning knob fully counterclockwise before continuing. 10.
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.) Connecting Fireplace to Gas Supply 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.
FIREPLACE INSTALLATION 20 Checking Gas Connections (Cont.) Installing Optional Wall Mount Switch - GWMS2 FIREPLACE INSTALLATION Continued Test Pressures Equal To or Less Than 1/2 PSIG (3.5 kPa) Pressure Testing Fireplace Gas Connections 1. 2. 1. 2. 3. Close equipment shutoff valve (see Figure 33).
FIREPLACE INSTALLATION Installing Optional Wireless Hand-Held Remote Control - GHRCB and GHRCTB Series Removing/Replacing Glass Door 21 21 FIREPLACE INSTALLATION Continued INSTALLING OPTIONAL WIRELESS HANDHELD REMOTE CONTROL - GHRCB AND GHRCTB SERIES 9-Volt Battery Terminal Wires Remote Control Unit NOTICE: Use only alkaline batteries (not included). Battery Cover Installing Remote Receiver 1. 2. 3. 4. 5. 6. Open bottom louver and locate the switch bracket on the left. Unscrew the switch bracket.
FIREPLACE INSTALLATION Removing/Replacing Glass Door (Cont.) Installing Optional Brick Liner Models BL42DA(SA) and BL42DHA(SA) FIREPLACE INSTALLATION Continued Removing Glass Doors If replacement of glass is necessary, the entire assembly, glass and frame, must be replaced. If glass is broken, wear gloves and tape the remaining fragments onto the frame. 1. Remove screen assembly by pushing the rod either left or right and then down and forward to remove screen/rod assembly from the firebox.
FIREPLACE INSTALLATION Installing Logs, Lava Rock and Glowing Embers 23 23 FIREPLACE INSTALLATION Continued INSTALLING LOGS, LAVA ROCK AND GLOWING EMBERS 7. 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.
OPERATING FIREPLACE For Your Safety Read Before Lighting Lighting Instructions To Turn Off Gas To Appliance Manual Lighting Procedure OPERATING FIREPLACE WARNING: If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life. LIGHTING INSTRUCTIONS 1. 2. 3. 4. 5. 6. 7. 8. STOP! Read the safety information above. Open lower louver panel. Turn off all electric power to the fireplace.
OPERATING FIREPLACE Optional Hand-Held Remote Operation 25 25 OPERATING FIREPLACE THERMOSTAT SERIES MODELS GHRCTB Continued The hand-held remote can be operated using either the manual mode (MANU) or thermostatic mode (AUTO) (see Figure 53). To select Fahrenheit/Centigrade mode display, carefully press the ˚C/˚F mode button with the end of a paper clip or similar blunt object.
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 27 27 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 28 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 29 29 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 27) 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 (V)K42N, (V)K42NH, (V)K42P, (V)K42PH ILLUSTRATED PARTS BREAKDOWN MODELS (V)K42N, (V)K42NH, (V)K42P, (V)K42PH 10-9 6 10-6 7 10-7 10-8 8 10-5 1 10-1 10-2 4 9 11 10-3 10-4 3 14 20 16 15 18 19 12 17 21 13 5 2 For more information, visit www.desatech.
PARTS LIST (V)K42N, (V)K42NH, (V)K42P, (V)K42PH PARTS LIST MODELS (V)K42N, (V)K42NH, (V)K42P, (V)K42PH This list contains replaceable parts used in your fireplace. When ordering parts, follow the instructions listed under Replacement Parts on page 31 of this manual. KEY NO.
ILLUSTRATED PARTS BREAKDOWN (V)K42N, (V)K42NH, (V)K42P, (V)K42PH ILLUSTRATED PARTS BREAKDOWN BURNER ASSEMBLY FOR MODELS (V)K42N, (V)K42NH, (V)K42P, (V)K42PH 1 12 12 7 16 2 10 15 3 13 12 4 5 9 TPTH TP TH 5 11 12 6 14 17 8 For more information, visit www.desatech.
PARTS LIST (V)K42N, (V)K42NH, (V)K42P, (V)K42PH PARTS LIST BURNER ASSEMBLY FOR MODELS (V)K42N, (V)K42NH, (V)K42P, (V)K42PH This list contains replaceable parts used in your fireplace. When ordering parts, follow the instructions listed under Replacement Parts on page 31 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 37 37 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 38 Postage Required 2701 Industrial Drive P.O. Box 90004 Bowling Green, KY 42102-9004 For more information, visit www.desatech.
39 NOTES _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ ___________________
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.