Vanguard VMH3000TNSA Owner'S Operation And Installation Manual Download Page 1

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OWNER’S OPERATION AND INSTALLATION MANUAL

VENT-FREE NATURAL GAS

MINI-HEARTH

®

 HEATER

VMH3000TNSA

15,000 to 30,000 Btu/Hr

with Thermostat

This appliance may be installed in an aftermarket*, permanently located, manufac-
tured (mobile) home, where not prohibited by state or local codes.
This appliance is only for use with the types of gas indicated on the rating plate.
This appliance is not converrtible for use with other gases.

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 qualified installer, service agency, or the
gas supplier.

WARNING: Improper installa-
tion, 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 is an unvented
gas-fired heater. It uses air
(oxygen) from the room in
which it is installed. Provisions
for adequate combustion and
ventilation air must be pro-
vided. Refer to 

Air For Com-

bustion and Ventilation sec-
tion on page 5 of this manual.

®

Shown with Optional

Mantel Which Features

a Built-In Base

*Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer.

Summary of Contents for VMH3000TNSA

Page 1: ... 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 byaqualifiedinstaller serviceagency orthe gas supplier WARNING Improper installa tion adjustment alteration service or maintenance can caus...

Page 2: ...ear the appliance Never place any objects on the heater Surface of heater becomes very hot when running heater Keep children and adults away from hot surface to avoid burns or clothing ignition Heater will re main hot for a time after shut down Allow surface to cool be fore touching Carefully supervise young chil dren when they are in same room with heater Make sure screen is in place be fore runn...

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Page 4: ... on front of heater cabinet Attach on top and sides with four brass screws included in hard ware package see Figure 6 9 Reattach front panel to heater if you are going to mount the heater to the base Do not reattach front panel at this time if you are going to mount heater to wall Figure 5 Assembling Brass Trim Figure 6 Attaching Brass Trim to Heater Attaching Brass Front Trim to Front Panel 1 Loc...

Page 5: ...per pa sec m2 or less with open ings gasketed or sealed and b weather stripping has been added on openable windows and doors and c caulking or sealants are applied to areas such as joints around window and door frames be tween sole plates and floors be tween wall ceiling joints be tween wall panels at penetra tions for plumbing electrical and gas lines and at other openings If your home meets all ...

Page 6: ...e direct vent gas appliances Direct vent draws combustion air from the outdoors and vents to the outdoors 4 Compare the maximum Btu Hr the space can support with the actual amount of Btu Hr used _________________ Btu Hr maximum the space can support _________________ Btu Hr actual amount of Btu Hr used Example 51 200 Btu Hr maximum the space can support 60 000 Btu Hr actual amount of Btu Hr used T...

Page 7: ...Inside Building Outlet Air Ventilated Attic Outlet Air Inlet Air Inlet Air Ventilated Crawl Space To Crawl Space To Attic Figure 8 Ventilation Air from Outdoors AIR FOR COMBUSTION AND VENTILATION Continued WARNING Rework work sheet adding the space of the adjoining unconfined space The combined spaces must have enough fresh air to supply all appliances in both spaces Ventilation Air From Outdoors ...

Page 8: ...ave the items listed below piping check local codes sealant resistant to propane LP gas equipment shutoff valve ground joint union test gauge connection sediment trap tee joint pipe wrench An CSA design certified equipment shutoff valve with 1 8 NPT tap is an ac ceptable alternative to test gauge connec tion Purchase the optional CSA design certifiedequipmentshutoffvalvefromyour dealer See Accesso...

Page 9: ...nters Attach mounting bracket to wall in one of two ways 1 Attaching to wall stud 2 Attaching to wall anchor Attaching To Wall Stud This method pro vides the strongest hold Insert mounting screws through mounting bracket and into wall studs Attaching To Wall Anchor This method allows you to attach mounting bracket to hollow walls wall areas between studs or to solid walls concrete or masonry Decid...

Page 10: ...ed hole 8 Tighten both screws until heater is firmly secured to wall Do not over tighten Note Do not replace front panel at this time Replace front panel after making gas connections and checking for leaks see pages 12 and 13 Figure 15 Installing Bottom Mounting Screws Attaching To Wall Anchor Method For attaching mounting bracket to hollow walls wall areas between studs or solid walls concrete or...

Page 11: ...all cut with a sharp knife at marked locations before drilling If securing to a wood floor drill a 3 4 deep hole using a 1 8 diameter drill bit Do not use anchors in wood floors If securing to a concrete floor drill a 1 3 8 deep hole using a 1 4 diameter concrete drill bit Completely insert an chors into each hole 3 Mount heater to hearth base following steps under Mounting Heater to Op tional Hea...

Page 12: ...used in certain areas Check your local codes Use pipe of 1 2 or greater diameter to allow proper gas volume to heater If pipe is too small undue loss of pressure will occur Installation must include an equipment shutoff valve union and plugged 1 8 NPT tap Locate NPT tap within reach for test gauge hook up NPT tap must be upstream from heater see Figure 18 IMPORTANT Installanequipmentshutoff valve ...

Page 13: ...kPa 1 Close equipment shutoff valve see Fig ure 19 2 Pressurize supply piping system by either using compressed air or open ing main gas valve located on or near gas meter 3 Check all joints from gas meter to equipment shutoff valve see Figure 20 Apply mixture of liquid soap and water to gas joints Bubbles forming show a leak 4 Correct all leaks at once Pressure Testing Heater Gas Connections 1 Op...

Page 14: ...er to Troubleshooting pages 16 through 18 Also contact a qualified service person or gas supplier for repairs Untilrepairsaremade lightpilotwith match To light pilot with match see Manual Lighting Procedure page 15 FOR YOUR SAFETY READ BEFORE LIGHTING Shutting Off Heater 1 Turn control knob clockwise to the OFF position Note Knobmustbedepressedslightly 2 Turn off all electric power to the ap plian...

Page 15: ...g Instruc tions page 14 5 Replace front panel Figure 23 Correct Pilot Flame Pattern INSPECTING BURNER Figure 24 Incorrect Pilot Flame Pattern Check pilot flame pattern and burner flame pattern often PILOT FLAME PATTERN Figure23showsacorrectpilotflamepattern Figure 24 shows an incorrect pilot flame pattern Theincorrectpilotflameisnottouch ing the thermocouple This will cause the thermocouple to coo...

Page 16: ...e 8 Replace control valve POSSIBLE CAUSE 1 Ignitor electrode positioned wrong 2 Ignitor electrode broken 3 Ignitor electrode not connected to igni tor cable 4 Ignitor cable pinched or wet 5 Piezo ignitor nut is loose 6 Broken ignitor cable 7 Bad piezo ignitor 1 Gas supply turned off or equipment shutoff valve closed 2 Control knob not in PILOT position 3 Control knob not pressed in while in PILOT ...

Page 17: ...19 or replace burner orifice 1 Turn heater off when using furniture polish wax carpet cleaners or similar products TROUBLESHOOTING Continued OBSERVED PROBLEM Burner does not light after ODS pilot is lit Delayed ignition of burner Burner backfiring during combustion Yellow flame during burner combustion Slight smoke or odor during initial operation Heater produces a whistling noise when burner is l...

Page 18: ... during combustion POSSIBLE CAUSE 1 Metal expanding while heating or con tracting while cooling 1 Heater burning vapors from paint hair spray glues etc see IMPORTANT statement above 2 Gas leak SeeWarning statement at top of page 1 Not enough fresh air is available 2 Low line pressure 3 ODS pilot is partially clogged 1 Gas leak SeeWarning statement at top of page 2 Control valve defective 1 Foreign...

Page 19: ...ntact your local natural gas supplier SERVICE HINTS CLEANING BURNER INJECTOR HOLDER AND PILOT AIR INLET HOLE The primary air inlet holes allow the proper amount of air to mix with the gas This provides a clean burning flame Keep these holes clear of dust dirt lint and pet hair Clean these air inlet holes prior to each heating season Blocked air holes will cre ate soot We recommend that you clean t...

Page 20: ...1 NATURAL GAS RESIDENTIAL HEATERS For more information visit www desatech com ILLUSTRATED PARTS BREAKDOWN VMH3000TNSA 1 2 9 10 10 12 13 14 15 17 19 20 23 24 25 6 26 6 7 1 1 3 1 28 5 16 18 4 22 1 1 1 21 11 8 27 ...

Page 21: ...itor Cable 1 11 098249 01 Nut M5 2 12 107485 01 ODS Pilot Assembly 1 13 103447 01 Burner 1 14 099387 03 3 16 Pilot Tubing 1 15 103845 12 Injector 1 16 NJF 8C Nut Hex 1 17 099415 11 Pressure Regulator 1 18 103408 01 Burner Bracket 2 19 105293 01 3 8 Outlet Burner Tubing 1 20 105292 01 3 8 Inlet Tubing 1 21 107218 01 Deflector Baffle 1 22 107060 01 Log Strap 2 23 105291 01 Thermostat Gas Valve 1 24 ...

Page 22: ...vice Department at 1 800 323 5190 You can also visit DESA International s technical service web site at www desatech com SPECIFICATIONS Btu Variable 15 000 30 000 Type Gas Natural Only Ignition Piezo Pressure Regulator Setting 3 W C Inlet Gas Pressure in of water Maximum 10 5 Minimum 5 Dimensions Inches H x W x D Heater 23 75 x 25 9 x 8 5 Carton 25 8 x 28 7 x 10 1 Weight pounds Heater 29 Shipping ...

Page 23: ...llation instructions included EQUIPMENT SHUTOFF VALVE GA5010 Equipmentshutoffvalvewith1 8 NPTtap HEARTH BASE GHB802 Series For locating heater on the floor Includes brass trim Complete installation instruc tions included ACCESSORIES Purchasetheseheateraccessoriesfromyour local dealer If they can not supply these accessoriescallDESAInternational sSales Department at 1 800 458 2472 for infor mation ...

Page 24: ...with all local codes and instructions furnished with the unit This warranty does not apply to parts that are not in original condition because of normal wear and tear or parts that fail or become damaged as a result of misuse accidents lack of proper maintenance or defects caused by improper installation Travel diagnostic cost labor transportationandanyandallsuchothercostsrelatedtorepairingadefect...

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