Vanguard VMH10TNA Owner's Operation And Installation Manual

Vent-free natural gas compact classic hearth fireplace

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VENT-FREE NATURAL GAS
COMPACT CLASSIC HEARTH
OWNER'S OPERATION AND INSTALLATION MANUAL
VMH10TNA
10,000 Btu/Hr with
Thermostat
WARNING: If the information in this manual
is not followed exactly, a fire or explosion
may result causing property damage, per-
sonal 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 per-
formed by a qualified installer, service
agency, or the gas supplier.
This appliance may be installed in an aftermarket*, permanently located, manufactured
(mobile) home, where not prohibited by local codes.
This appliance is only for use with the type of gas indicated on the rating plate. This
appliance is not convertible for use with other gases.
*Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer
Save this manual for future reference.
®
®
FIREPLACE
Shown with Optional
Cabinet Mantel/Hearth
Base Accessory
WARNING: Improper instal-
lation, adjustment, alteration,
service, or maintenance can
cause injury or property dam-
age. Refer to this manual for
correct installation and op-
erational procedures. For as-
sistance or additional infor-
mation consult a qualified in-
staller, service agency, or the
gas supplier.
WARNING:
This
unvented gas-fired heater. It
uses air (oxygen) from the
room in which it is installed.
Provisions for adequate com-
bustion and ventilation air
must be provided. Refer to
Air for Combustion and Ven-
tilation section on page 5 of
this manual.
is
an

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  • Page 1 VENT-FREE NATURAL GAS COMPACT CLASSIC HEARTH OWNER’S OPERATION AND INSTALLATION MANUAL VMH10TNA 10,000 Btu/Hr with Thermostat WARNING: If the information in this manual is not followed exactly, a fire or explosion may result causing property damage, per- sonal injury, or loss of life.
  • Page 2: Safety Information

    VMH10TNA ® VENT-FREE NATURAL GAS COMPACT FIREPLACE SAFETY INFORMATION WARNINGS WARNING ICON G 001 IMPORTANT: Read this owner’s manual carefully and completely before trying to assemble, oper- ate, or service this fireplace. Im- proper use of this fireplace can cause serious injury or death from...
  • Page 3: Product Identification

    PRODUCT IDENTIFICATION Fireplace Cabinet Ignitor Button Figure 1 - Vent-Free Natural Gas Compact Fireplace LOCAL CODES Install and use fireplace with care. Follow all local codes. In the absence of local codes, use the latest edition of The National Fuel Gas Code ANS Z223.1, also known as NFPA 54*.
  • Page 4 VMH10TNA ® VENT-FREE NATURAL GAS COMPACT FIREPLACE ASSEMBLY WARNING: Always have branch support and screen in place before operating fireplace. This prevents excessive tempera- tures on fireplace surfaces. ASSEMBLING FIREPLACE Tools Required: • Phillips screwdriver • 5/16" hex wrench • slotted screwdriver Installing Log 1.
  • Page 5: Air For Combustion And Ventilation

    AIR FOR COMBUSTION AND VENTILATION WARNING: This heater shall not be installed in a confined space or unusually tight construction unless provisions are provided for adequate combustion and ven- tilation air. Read the following in- structions to insure proper fresh air for this and other fuel-burning appliances in your home.
  • Page 6 VMH10TNA ® VENT-FREE NATURAL GAS COMPACT FIREPLACE AIR FOR COMBUSTION AND VENTILATION Continued DETERMINING FRESH-AIR FLOW FOR FIREPLACE LOCATION Determining if You Have a Confined or Unconfined Space Use this worksheet to determine if you have a confined or unconfined space.
  • Page 7 AIR FOR COMBUSTION AND VENTILATION Continued VENTILATION AIR Ventilation Air From Inside Building This fresh air would come from an adjoining unconfined space. When ventilating to an adjoining unconfined space, you must pro- vide two permanent openings: one within 12" of the ceiling and one within 12" of the floor on the wall connecting the two spaces (see options 1 and 2, Figure 4).
  • Page 8: Installation

    VMH10TNA ® VENT-FREE NATURAL GAS COMPACT FIREPLACE INSTALLATION NOTICE: This heater is intended for use as supplemental heat. Use this heater along with your pri- mary heating system. Do not in- stall this heater as your primary heat source. If you have a central heating system, you may run system’s circulation blower while...
  • Page 9: Built-In Fireplace Installation

    INSTALLATION Continued CEILING 36" Minimum Top Of Mantel Can Be Flush With Wall Right Side Left Side Figure 7 - Mounting Clearances As Viewed From Front of Fireplace Shown with Op- tional Mantel BUILT-IN FIREPLACE INSTALLATION Built-in installation of this fireplace involves installing fireplace into a framed-in enclo- sure.
  • Page 10: Optional Mantel Installation

    VMH10TNA ® VENT-FREE NATURAL GAS COMPACT FIREPLACE INSTALLATION Continued Mantel Clearances for Built-In Installation If placing mantel above built-in fireplace, you must meet minimum clearance between mantel shelf and top of fireplace opening. If your installation does not meet the above minimum clearances, you must: •...
  • Page 11 INSTALLATION Continued Assembling Brass Trim (Brass trim shipped with mantel) 1. Remove packaging from three remain- ing pieces of brass trim. 2. Locate two adjusting plates with set screws, and two shims in the hardware packet. 3. Align shim under adjusting plate as shown in Figure 14.
  • Page 12 Plate Valve Cover Shield Box Cover Figure 17 - Installing Blower Bracket Assembly VMH10TNA 6. Route the wire harness through the hole in left side of baffle. Pull wire harness through lower opening above where the valve shield was removed.
  • Page 13 INSTALLATION Continued For Built-In Installation WARNING: A licensed elec- trician must connect the wiring harness to electrical supply fol- lowing all local codes. Electri- cian must provide a clamp on the box cover to secure the wir- ing. Wiring should be routed through the bushing in the hole on the outer casing of heater.
  • Page 14: Connecting To Gas Supply

    VMH10TNA ® VENT-FREE NATURAL GAS COMPACT FIREPLACE INSTALLATION Continued Attaching Wood Base to Solid Floor For attaching base to solid floors (concrete or masonry) Note: Floor anchors and mounting screws are in hardware package. The hardware package is provided with fireplace.
  • Page 15: Connecting Fireplace To Gas Supply

    INSTALLATION Continued CONNECTING FIREPLACE TO GAS SUPPLY Installation Items Needed • Phillips screwdriver • sealant (resistant to propane/LP gas, not provided) 1. Remove fireplace screen. Remove two screws that hold fireplace screen in place for shipping. These screws are located near top of screen. Discard screws.
  • Page 16: Checking Gas Connections

    VMH10TNA ® VENT-FREE NATURAL GAS COMPACT FIREPLACE INSTALLATION Continued CHECKING GAS CONNECTIONS WARNING: Test all gas pip- ing and connections for leaks after installing or servicing. Cor- rect all leaks at once. WARNING: Never use an open flame to check for a leak. Apply a mixture of liquid soap and water to all joints.
  • Page 17: Operating Fireplace

    OPERATING FIREPLACE FOR YOUR SAFETY READ BEFORE LIGHTING WARNING: If you do not fol- low these instructions exactly, a fire or explosion may result caus- ing property damage, personal injury or loss of life. A. This appliance has a pilot which must be lighted by hand.
  • Page 18 VMH10TNA ® VENT-FREE NATURAL GAS COMPACT FIREPLACE OPERATING FIREPLACE Continued TO TURN OFF GAS TO APPLIANCE Shutting Off Fireplace 1. Turn control knob clockwise to the OFF position. 2. Turn off all electric power to the ap- pliance if service is to be performed.
  • Page 19: Inspecting Burner

    INSPECTING BURNER Check pilot flame pattern and burner flame pattern often. PILOT FLAME PATTERN Figure 30 shows a correct pilot flame pattern. Figure 31 shows an incorrect pilot flame pattern. The incorrect pilot flame is not touch- ing the thermocouple. This will cause the thermocouple to cool.
  • Page 20: Troubleshooting

    VMH10TNA ® VENT-FREE NATURAL GAS COMPACT FIREPLACE TROUBLESHOOTING Note: For additional help, visit DESA International’s technical service web site at www.desatech.com. Note: All troubleshooting items are listed in order of operation. OBSERVED PROBLEM When ignitor button is pressed, there is no...
  • Page 21 TROUBLESHOOTING Continued OBSERVED PROBLEM Burner does not light after ODS/pilot is lit Delayed ignition of burner Burner backfiring during combustion Slight smoke or odor during initial operation Fireplace produces a whistling noise when burner is lit White powder residue forming within burner box or on adjacent walls or furniture 104408 POSSIBLE CAUSE...
  • Page 22 VMH10TNA ® VENT-FREE NATURAL GAS COMPACT FIREPLACE 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.
  • Page 23: Cleaning And Maintenance

    CLEANING AND MAINTENANCE WARNING: Turn off fireplace and let cool before cleaning. CAUTION: You must keep control areas, burner, and circu- lating air passageways of fire- place clean. Inspect these areas of fireplace before each use. Have fireplace inspected yearly by a qualified service person.
  • Page 24: Illustrated Parts Breakdown

    VMH10TNA ® VENT-FREE NATURAL GAS COMPACT FIREPLACE ILLUSTRATED PARTS BREAKDOWN VMH10TNA 12-1 12-2 12-1 104408...
  • Page 25: Parts List

    PARTS LIST VMH10TNA This list contains replaceable parts used in your fireplace. When ordering parts, follow the instructions listed under Replacement Parts on page 26 of this manual. 104408 OWNER’S MANUAL VMH10TNA PART NO. DESCRIPTION 102633-02CK Outer Casing Top 102624-02...
  • Page 26: Specifications

    VMH10TNA ® VENT-FREE NATURAL GAS COMPACT FIREPLACE SPECIFICATIONS Input Rate Type Gas Ignition Pressure Regulator Setting Inlet Gas Pressure (in. of water)* Maximum Minimum Dimensions, Inches (H x W x D) Fireplace (including hood and screws) Carton Weight, pounds Fireplace...
  • Page 27 ACCESSORIES Purchase these fireplace accessories from your local dealer. If they cannot supply these accessories call DESA International’s Sales Department at 1-800-458-2472 for referral information. You can also write to the ad- dress listed on the back page of this manual. MANUAL SHUTOFF VALVE GA5010 Manual shutoff valve with 1/8"...
  • Page 28: Warranty Information

    WARRANTY INFORMATION 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. VENT-FREE NATURAL GAS COMPACT CLASSIC HEARTH DESA International warrants this product to be free from defects in materials and components for four (4) years and five (5) years on stainless steel burners from the date of first purchase, provided that the product has been properly installed, operated and...

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