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

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DIRECT-VENT GAS FIREPLACE

OWNER’S OPERATION AND INSTALLATION MANUAL

®

MDVFST (See Thru) fireplace with manual variable blower, ON/OFF hand-held remote control,

electrical junction box, gas flex line and equipment shutoff valve.

This appliance may be installed as an OEM installation in a manufactured (mobile) home and must
be installed in accordance with the manufacturer's instructions and the Manufactured Home
Construction and Safety Standard, 

Title 24 CFR, Part 3280 in the United States or the Mobile Home

Standard, 

CAN/CSA Z240 MH Series, in Canada.

This appliance is only for use with the type of gas indicated on the rating plate. A conversion kit is
supplied with the appliance.

— 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.

SAVE THIS BOOK

This book is valuable. In addition to instructing
you on how to install and maintain your appli-
ance, it also contains information that will
enable you to obtain replacement parts or
optional accessory items when needed. Keep
it with your other important papers.

WARNING: Improper installation,
adjustment, alteration, service, or
maintenance to this appliance can
cause injury or property damage.
Refer to this manual. For assistance
or additional information consult a
qualified installer, service agency,
or the gas supplier.

CHECK LOCAL CODES PRIOR TO INSTALLATION

WARNING: If the information in these instruc-
tions is not followed exactly, a fire or explosion
may result causing property damage, personal
injury, or loss of life.

WARNING: This direct-vent gas fire-
place series is intended for use with
Natural or Propane/LP gas only. Do
not attempt to burn any solid fuels
in these appliances.

This fireplace meets
the construction and

safety standards of

H.U.D. for application

in mobile homes when

installed according to

these instructions.

This appliance is

shipped ready for natural

gas installation. The

propane/LP conversion

parts are included.

Summary of Contents for MDVFST

Page 1: ...gas supplier call the fire department Installation and service must be performed by a qualified installer service agency or the gas supplier SAVE THIS BOOK This book is valuable In addition to instru...

Page 2: ...nditsapprovedcom ponentsaresafewheninstalledaccordingto this installation manual and operated as recommended by DESA Unless you use DESA approved components tested for this appliance YOUMAYCAUSEASAFET...

Page 3: ...with local codes 6 Never obstruct the openings of the ap pliance or flow of ventilation air Keep the control compartments accessible 7 Do not use this appliance if any part has been under water Immed...

Page 4: ...Gypsum Board Sheetrock Etc Safe Zone for Projection of Combustible Material Note Terminations are not designed for installation prior to transportation Thesemodels areapprovedforusewithboth flex and...

Page 5: ...J clearance to non mechanical air supply inlet to building or the combustion air inlet to any other fireplace 12 inches 305mm minimum K clearance to a mechanical air supply inlet 72 inches 1829mm mini...

Page 6: ...r every 12 of run towards the termination A MDVGFK ground floor horizontal vent kit is specifically designed for common horizontal installations in manufactured mobile homes Additional horizontal in s...

Page 7: ...with pipe seams oriented towards the wall or floor Twist lock Procedure The female ends of the pipes and fittings have four locking lugs indentations These lugs will slide straight into matching slot...

Page 8: ...e outside edge of the vent cap Position the vent cap in the center of the 7 1 2 or 10 hole on the exterior wall with the arrow on the vent cap pointing up Insure proper clearance of 1 to combustibles...

Page 9: ...vertical minimum maximum and horizontal maximum dimensions which must be met All connections must be sealed with high temperaturesiliconesealant outerpipeonly as specified in the second warning state...

Page 10: ...o avoid cutting loadbearing members Note Pay special attention to these installation instructions for re quired clearances air space to combus tibles when passing through ceilings walls roofs enclosur...

Page 11: ...below the ceiling see Figure 23 Align the support box vertically and horizontally using a level Temporarily tack the support box in place through the inside walls and into the roof sheathing 4 Using t...

Page 12: ...zontal Run VENTING INSTALLATION Continued Venting with Two 90 Elbows Vertical V1 Horizontal H 5 min 6 max 6 min 12 max 7 min 18 max 8 min 20 max Note Vertical V1 Vertical V2 20 max Figure 27 Vertical...

Page 13: ...strictor Storm Collar 7 x 30 Elbow 7 x 4 GalvanizedPipe 7 x2 Galvanized Pipe 7 AdjustableGalvanizedPipe 7 12 Firestop Support Roof Flashing RTV Silicone Vertical Termination and 26 screws D1000 7 x 12...

Page 14: ...wer Assembly Magnet High Speed ON OFF Low Speed Magnets 1 4 Revolution Figure 32 Blower Speed Control Blower Center to Firebox Bottom Center Along Inside Wall by Flue Exit Peninsula or See Thru Firepl...

Page 15: ...Receiver Note Receiver is preinstalled 1 Remove access panel from lower front face of firebox Lift straight up on ac cess panel until it stops Pull bottom of access panel forward then down 2 Disconne...

Page 16: ...pane and should be applied lightly to ensure excess sealant does not enter the gas line CAUTION Do not kink flex ible gas line WARNING All gas piping and connections must be tested for leaks after the...

Page 17: ...ront Figure 45 Installing Logs A Top View 2 Remove the screen rod by sliding spring clip on one end toward the cen ter Slide rod into screen rod hole until other end of rod is free Remove rod 3 To ope...

Page 18: ...preset to the proper air to gas ratio which resultsinaneven cleanburningflameacross the burner see Figure 50 If readjustment is necessary you can restore the proper air to gas ratio by loosening the...

Page 19: ...Immediately call your gas supplier from a neighbor s phone Follow the gas supplier s instructions If you cannot reach your gas sup plier call the fire department C Use only your hand to push in or tur...

Page 20: ...to press the ON OFF buttons on the hand held remote control unit for up to 3 sec onds to assure proper operation 2 Press ON OFF button to turn the burners on and off When turning burners off the pilo...

Page 21: ...ession nut from the pilot andreplacethepropane LPpilotorificewith supplied orifice from conversion kit see Figure 57 IMPORTANT Be careful not to bend or kink aluminum tubing during the conver sion Mak...

Page 22: ...em Conversion Screw Top SIT Nova Millivolt Valve INSTALLATION INSTRUCTIONS FOR CONVERSION NATURAL TO PROPANE LP Continued TheSITNovamillivoltvalveconvertsfrom natural gas to propane LP gas with the re...

Page 23: ...ireplace 3 Remove debris and dirt inspect and clean any other possible obstructions 4 Contact your gas supplier 5 Refer to section on pilot lighting 6 Have a qualified technician replace pilot line 7...

Page 24: ...shutoff valve 2 Turn control knob to PILOT position 3 Press in control knob while in PILOT position 4 Continue holding down control knob Repeat igniting operation until air is removed 5 Contact local...

Page 25: ...rette smoke cements and glues new carpet or textiles etc create fumes These fumes may mix with combustion air and create odors 1 Gasleak SeeWarning statement above 1 High or gusting winds 2 Low line p...

Page 26: ...delayed ignition fireplace will not produce specified heat propane LP gas supply may be low When Gas Quality Is Bad pilot will not stay lit burner will produce flames and soot fireplace will backfire...

Page 27: ...cian replace it REFRACTORY PIECES Front Bottom 105886 01 25854 Left Right Bottom 105887 01 25856 Rear 106924 01 27374 Front 105888 01 25885 BURNER ASSEMBLY 105885 01 27243 REPLACEMENT PARTS Continued...

Page 28: ...l be the responsibility of the owner TO THE FULL EXTENT ALLOWED BY THE LAW OF THE JURISDICTION THAT GOVERNS THE SALE OF THE PRODUCT THIS EXPRESS WARRANTY EXCLUDES ANY AND ALL OTHER EXPRESSED WARRANTIE...

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