MHSC 400DVBNVMH7 Installation & Operation Manual

Direct vent gas fireplace for manufactured homes

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Direct Vent Gas Fireplace
for Manufactured Homes
Models:
400DVBNVMH7,
400DVBPVMH7
Homeowner's Installation &
Operation Manual
WARNING
IF tHe INFoRMAtIoN IN tHese INstRuctIoNs 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 installation, adjustment, alteration,
services or maintenance 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.
this appliance may be installed in an aftermarket*,
permanently located, manufactured home (usA only) or
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, unless a certified
kit is used.
* Aftermarket: completion of sale, not for purpose of resale, from the
manufacturer.
Due to HIGH teMPeRAtuRes, tHe APPlIANce
544500
sHoulD Be locAteD out oF tRAFFIc AND
MHDV cover
AWAy FRoM FuRNItuRe AND DRAPeRIes.
cHIlDReN AND ADults sHoulD Be AleRteD
to t H e H A Z A R D s o F H I G H s u R FA c e
teMPeRAtuRe AND sHoulD stAy AWAy to
AVoID BuRNs oR clotHING IGNItIoN.
youNG cHIlDReN sHoulD Be suPeRVIseD
WHeN tHey ARe IN tHe sAMe RooM As tHe
APPlIANce.
clotHING oR otHeR FlAMMABle MAteRIAl
sHoulD Not Be PlAceD oN oR NeAR tHe
APPlIANce.
KeeP tHe RooM AReA cleAR AND FRee FRoM
coMBustIBle MAteRIAls, GAsolINe, AND
otHeR FlAMMABle VAPoRs AND lIquIDs.
INstAlleR: leave this manual with the appliance.
coNsuMeR: Retain this manual for future refer-
ence.
54D4500 10/09 Rev. 1

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Summary of Contents for MHSC 400DVBNVMH7

  • Page 1 Direct Vent Gas Fireplace for Manufactured Homes Models: 400DVBNVMH7, 400DVBPVMH7 Homeowner’s Installation & Operation Manual WARNING IF tHe INFoRMAtIoN IN tHese INstRuctIoNs Is Not FolloWeD exActly, A FIRe oR exPlosIoN MAy Result cAusING PRoPeRty DAMAGe, PeRsoNAl INjuRy oR loss oF lIFe.
  • Page 2: Table Of Contents

    coNteNts Direct Vent Gas Fireplace for Mobile Homes Important safety Information ........3 checking Gas Pressure ......... 30 code Approval ............4 electrical Installation..........30 Electrical Wiring ..........30 Product Features ............5 Remote control system .......... 31 Pre-Installation Information High Elevations .............
  • Page 3: Direct Vent Gas Fireplace For Mobile Homes

    Direct Vent Gas Fireplace for Mobile Homes IMPoRtANt sAFety INFoRMAtIoN oWNeR INstAlleR Please retain these instructions for future reference. Please leave these instructions with the appliance. • Read this owner’s manual carefully and completely before trying to assemble, operate, or service this fireplace. •...
  • Page 4: Code Approval

    Direct Vent Gas Fireplace for Mobile Homes IMPoRtANt sAFety INFoRMAtIoN 14. Do not use any solid fuels (wood, coal, paper, card- IMPoRtANt: board, etc.) in this fireplace. Use only the gas type PleAse ReAD tHe FolloWING indicated on rating plate. cAReFully 15.
  • Page 5: Product Features

    GAs sPecIFIcAtIoNs & oRIFIce sIZe installations. Max.Input Min. Input Orifice HIGH eleVAtIoNs Model Fuel BTU/h BTU/h Size 400DVBNVMH7 Nat. 4,000 17,000 Input ratings are shown in BTU per hour and are certi- 400DVBPVMH7* 4,000 17,000 fied without deration for elevations up to 4,500 feet (1,370 m) above sea level.
  • Page 6: Fireplace & Framing Dimensions

    FIRePlAce DIMeNsIoNs Direct Vent Gas Fireplace for Mobile Homes Minimum Rough 29" (737 mm) Opening  Depth 15 ” ” (1094 mm) (400 mm) 16” (406 mm) 1/2” 5/8” 1/2” 1/2” or 5/8” 5/8” 37 ” (953 mm) Minimum Rough Opening Width Minimum Rough Opening  1 ” (32”) Height 5/8" 41 " 41 ” (1061 mm) 1/2” 2 ” (64 mm) (1054 mm) 20 ”...
  • Page 7: Fireplace Location

    FIRePlAce locAtIoN Direct Vent Gas Fireplace for Mobile Homes FIRePlAce locAtIoN Plan for the installation of your appliance. This includes determining where the unit is to be installed, the vent configuration to be used, framing and finishing details, and whether any optional accessories (i.e.
  • Page 8: Clearances

    cleARANces Direct Vent Gas Fireplace for Mobile Homes cleARANces to coMBustIBles Follow these instructions carefully to ensure safe installation. Failure to follow instructions exactly can create a fire hazard. the appliance cannot be installed on a carpet, tile or other combustible material other than wood flooring.
  • Page 9: Secure Fireplace To Floor Or Framing

    secuRe FIRePlAce to FlooR or FRAMING Direct Vent Gas Fireplace for Mobile Homes The fireplace must be secured to the floor and/or to framing studs as shown in Figure 6. Use two () wood screws or masonry/ concrete screws to secure fireplace to the floor. Use four (4) screws to attach fireplace to framing.
  • Page 10: Installation Information

    Length until Flue • Unauthorized modification of the venting system. Pipe Penetrates • Installation of any component part not manufactured or approved by MHSC. Outside Wall • Installation other than permitted by these instructions. Horizontal sections of this vent system require a minimum of 3”...
  • Page 11: Optional Rear Vent Installation

    VeNtING INstAllAtIoN Direct Vent Gas Fireplace for Mobile Homes oPtIoNAl ReAR VeNt APPlIcAtIoN After conversion to rear vent configuration, The appliance is shipped as a top vent unit. If the instal- the 4” (102 mm) flue pipe should be concentric lation layout requires the unit to be a rear vent configu- within the 7”...
  • Page 12: Vent Installation

    VeNtING INstAllAtIoN Direct Vent Gas Fireplace for Mobile Homes INstAllAtIoN PlANNING Never run the vent pipe down. this may cause There are two basic types of direct-vent installation: excessive temperatures which could cause a • Vertical Termination fire. • Horizontal Termination It is important to select the proper length of vent pipe for the type of termination you choose.
  • Page 13: Vertical/Horizontal Termination Configuration

    3. MHSC assumes no responsibility for the improper  only permitted if veranda, porch, deck or balcony is fully open on a performance of the appliance when the venting system minimum  sides beneath the floor: does not meet these requirements.
  • Page 14: General Information

    Repeat process with 7” flex vent pipe. The same proce- the current National Fuel Code ANSI Z3.1/NFPA 54. dure must be performed on the vent side. Only venting components manufactured by MHSC may be used in Direct Vent systems. canadian Installations...
  • Page 15: Vertical Through-The-Roof

    VeNtING INstAllAtIoN Direct Vent Gas Fireplace for Mobile Homes tWIst locK PIPes When using twist lock pipe it is not necessary to use sealant on the joints. The only areas of the venting system that need to be sealed with high temperature sili- cone sealant are the sliding joints of any telescopic vent section used in the system.
  • Page 16 VeNtING INstAllAtIoN Direct Vent Gas Fireplace for Mobile Homes • VeRtIcAl tHRouGH-tHe-RooF The maximum angular variation allowed in the system is 70°. Figure 17 INstAllAtIoN • For the minimum height of the vent above the highest Note: For all top vent vertical through-the-roof installa- point of penetration through the roof refer to Page 17, tions, install the supplied cross-bar flue restrictor onto the Figure 22.
  • Page 17 VeNtING INstAllAtIoN Direct Vent Gas Fireplace for Mobile Homes 9. Install storm collar and seal around the pipe. Horizontal Overhang 10. Add additional vent lengths for proper height. Figure 11. Apply high temperature sealant to 4” and 7” collars of 2 ft. ...
  • Page 18 VeNtING INstAllAtIoN Direct Vent Gas Fireplace for Mobile Homes Note: The flex vent system includes spring spacers The width of the opening should be a minimum of 10” around the flue at intervals of approximately 1 foot apart. to allow the carriage bolts of the roof support assembly These springs are not to be removed, but are necessary to clear the roof framing.
  • Page 19: Roof Flashing

    VeNtING INstAllAtIoN Direct Vent Gas Fireplace for Mobile Homes Figure 26 Figure 30 Figure 27 KT1044 7. Once secured to the roof support assembly, the flex flue and outer venting can be cut off at the fireplace as KT1044 needed to make the lower vent connections. roof flashing 8.
  • Page 20: Rear Wall Vent Application

    (44 mm) Min. vented directly to a termination located on the rear wall behind the appliance. • Only MHSC venting components are approved to be 9B\,” used in these applications (Refer to ‘Venting Compo- (44 mm) nents’ listed for different installation requirements).
  • Page 21 VeNtING INstAllAtIoN Direct Vent Gas Fireplace for Mobile Homes Finish Wall Vent Termination Rise FP147 Figure 36 - There must be a 1/2" rise per foot length Figure 34 - FP94 Side View of Final Unit Location toP VeNt sIDeWAll APPlIcAtIoN ReAR WAll VeNt INstAllAtIoNs - FP2294 FP1472...
  • Page 22 VeNtING INstAllAtIoN Direct Vent Gas Fireplace for Mobile Homes When installing the appliance as a rear vent unit, the installed on the vertical part of the vent system. 90° or 45° transition elbow attached directly to the • The maximum number of elbow degrees in a system is rear of the unit is Not INcluDeD in the following cri- 70°.
  • Page 23: Vertical Sidewall Installation

    VeNtING INstAllAtIoN Direct Vent Gas Fireplace for Mobile Homes VeRtIcAl sIDeWAll INstAllAtIoN - tWIst locK PIPe step 1 Locate vent opening on the wall. It may be necessary to first position the fireplace and measure to obtain hole lo- cation. Depending on whether the wall is combustible or noncombustible, cut opening to size.
  • Page 24 Direct Vent Gas Fireplace for Mobile Homes VeNtING INstAllAtIoN step 7 step 4 Guide the vent terminations 4” and 7” collard into their Install the 4” (10 mm) flex vent pipe to the appliance col- respective vent pipes. Double check that the vent pipes lar as described on Page 14.
  • Page 25: Cathedral Ceiling Installation

    VeNtING INstAllAtIoN Direct Vent Gas Fireplace for Mobile Homes cAtHeDRAl ceIlING INstAllAtIoN 1. Remove shingles or other roof covering as necessary to cut the rectangular hole for the support box. Mark the outline of the cathedral ceiling support box on the roof sheathing using the locating hole as a center point.
  • Page 26: Venting Components

    VeNtING coMPoNeNts Direct Vent Gas Fireplace for Mobile Homes VeRtIcAl VeNtING Description Model Number Vertical Vent Termination Kits Vertical Vent Termination w/ Storm Collar 7TDVSKV (flashing NOT included) Vertical Vent Termination w/ Storm Collar - 8 pack 7TDVSKV/8 (flashing NOT included) Vertical Vent Termination w/ 1/1 - 6/1 Flashing, Storm 7TDVSKVA* Collar and Ceiling Support Kit...
  • Page 27: Horizontal Venting

    VeNtING coMPoNeNts Direct Vent Gas Fireplace for Mobile Homes HoRIZoNtAl VeNtING Description Model Number Horizontal Vent Termination Kits Up and Out Side Wall Termination Kit, includes 1” to 16” 7TBLSCTK Adjustable Termination Pipe, 90° Elbow, Firestops and Cool Touch Termination w/Siding Shield, Additional 1” Section Provided for Min.
  • Page 28: Fireplace Installation

    FIRePlAce INstAllAtIoN Direct Vent Gas Fireplace for Mobile Homes cHecK GAs tyPe Use proper gas type for the fireplace you are installing. If you have conflicting gas type, do not install fireplace. See dealer where you purchased the fireplace for proper fireplace for your gas type or conversion kit.
  • Page 29 FIRePlAce INstAllAtIoN Direct Vent Gas Fireplace for Mobile Homes A manual shutoff valve must be installed only persons licensed to work with gas upstream of the appliance. union tee and piping may make the necessary gas plugged 1/8” NPt pressure tapping point connections to this appliance.
  • Page 30: Checking Gas Pressure

    Direct Vent Gas Fireplace for Mobile Homes MIllIVolt & electRoNIc cHecK GAs PRessuRe and electRIcAl INstAllAtIoN 1. Check gas type. The gas supply must be the same as stated on the appliance’s rating decal. If the gas supply is different from the fireplace, STOP! Do not install the appliance.
  • Page 31: Remote Control System

    electRIcAl INstAllAtIoN / FAN BloWeR systeM Direct Vent Gas Fireplace for Mobile Homes ReMote coNtRol systeM The remote control system is factory installed. Figure 51 - Remote Control System and Door Safety Switch Glass Door PILOT Safety Switch TH/TP Do not connect wall switch to (110 V) circuit.
  • Page 32: Operating Instructions

    Direct Vent Gas Fireplace for Mobile Homes oPeRAtING INstRuctIoNs (MIllIVolt) FoR youR sAFety ReAD BeFoRe lIGHtING If you do not follow these instruction exactly, a fire or explosion may result causing property damage, personal injury or loss of life. A. This appliance is equipped with a pilot which must be lit with built-in piezo ignitor while following these instructions exactly.
  • Page 33: Lighting Pilot

    oPeRAtING INstRuctIoNs (MIllIVolt) Direct Vent Gas Fireplace for Mobile Homes lIGHtING PIlot FoR tHe FIRst tIMe APPRoVeD leAK testING MetHoD If using a soap and water You may check for gas leaks with the following methods solution to test for leaks, only: Do Not spray solution onto •...
  • Page 34: Lighting Burner

    Direct Vent Gas Fireplace for Mobile Homes oPeRAtING INstRuctIoNs (MIllIVolt) lIGHtING BuRNeR MAIN BuRNeR sWItcH Switch The “ON/OFF/RS” switch for the main burner can be found behind door of the fireplace. This switch allows you to turn on and to turn off the main burner without using the gas valve knob.
  • Page 35: Glass Removal

    GlAss ReMoVAl Direct Vent Gas Fireplace for Mobile Homes GlAss FRAMe ReMoVAl 1. Release clamps on bottom of fireplace. Figure 59 . Tilt glass frame out and lift glass frame up until it clears three tabs on top of fireplace. 3.
  • Page 36: Final Installation

    FINAl INstAllAtIoN Direct Vent Gas Fireplace for Mobile Homes RocK Wool PlAceMeNt 1. Place rock wool on burner to provide glowing embers. For best results, pull the rock wool apart into pieces Burner the size of a dime or smaller. .
  • Page 37: Cleaning And Maintenance

    cleANING and MAINteNANce Direct Vent Gas Fireplace for Mobile Homes turn off gas before servicing fireplace. It is recommended that a qualified service technician Thermocouple perform these check-ups at the beginning of each heating season. Thermopile BuRNeR, PIlot AND coNtRol coMPARtMeNt Keep the control compartment, logs, and burner areas surrounding the logs clean by vacuuming or brushing at least twice a year.
  • Page 38: Vent System

    cleANING and MAINteNANce Direct Vent Gas Fireplace for Mobile Homes VeNt systeM The fireplace and venting system should be inspected before initial use and at least annually by a qualified field service person. Inspect the external vent cap on a regular basis to make sure that no debris is interfering with the airflow.
  • Page 39: Troubleshooting

    tRouBlesHootING Direct Vent Gas Fireplace for Mobile Homes stANDING PIlot IGNItIoN syMPtoM PossIBle cAuse ActIoN 1. Spark ignitor will A. Wire disconnected. A. Open door and check to make sure wire is connected not light pilot after to ignitor. repeated triggering of B.
  • Page 40: Troubleshooting

    tRouBlesHootING Direct Vent Gas Fireplace for Mobile Homes stANDING PIlot IGNItIoN syMPtoM PossIBle cAuse ActIoN 4. Frequent pilot A. Pilot flame may be too high A. Clean and adjust the pilot flame for maximum flame outage problem. or too low, causing pilot impingement on thermocouple.
  • Page 41: Replacement Parts

    RePlAceMeNt PARts Direct Vent Gas Fireplace for Mobile Homes FIReBox coMPoNeNts 544500 MHDV parts 54D4500...
  • Page 42 RePlAceMeNt PARts Direct Vent Gas Fireplace for Mobile Homes FIReBox coMPoNeNts Item Description qty. Part No. standard Features Junction Box 6D18K Black Louver 6D0695 Glass Frame Assembly 54D0340 Factory Installed options Thermostat Sensor 6D870 Firebrick Center - Tavern Brown 54D0184 Firebrick Right - Tavern Brown 54D0187 Firebrick Left - Tavern Brown...
  • Page 43: Standing Pilot Millivolt Control

    RePlAceMeNt PARts Direct Vent Gas Fireplace for Mobile Homes stANDING PIlot - MIllIVolt coNtRol Item Description qty. 400DVBNVMH7 400DVBPVMH7 544500 Gas Valve Assy. 37D0117 37D0118 MHDV millivolt parts Pilot Assembly 37D0018 37D0019 C. Replacement Thermocouple 37D1067 37D1067 I. Replacement Igniter and Wire...
  • Page 44: Logs

    RePlAceMeNt PARts Direct Vent Gas Fireplace for Mobile Homes loGs Ref. Description qty. Part No. 1. Rear Log #1 54D0117 . Bottom Left Log # 54D0118 3. Bottom Right Log #3 54D0119 4. Top Log #4 54D010 540701 DVB log parts 54D4500...
  • Page 45 Direct Vent Gas Fireplace for Mobile Homes 54D4500...
  • Page 46: Massachusetts Residents Only

    Massachusetts Residents only — Please read and follow these special requirements Direct Vent Gas Fireplace for Mobile Homes Note ReGARDING VeNteD PRoDucts . Approved carbon Monoxide Detectors. Each carbon This product must be installed by a licensed plumber or gas fitter monoxide detector as required in accordance with the above when installed within the Commonwealth of Massachusetts.
  • Page 47: Warranty

    This warranty is expressly in lieu of other warranties, express or implied, including the warranty of merchant- ability of fitness for purpose and of all other obligations or liabilities. MHSC does not assume for it any other obligations or liabilities in connection with sale or use of the appliance. It states that do not allow limitations on how long an implied warranty lasts, or do not allow exclusion of indirect damage, those limitations of exclusions may not apply to you.
  • Page 48: Efficiencies

    Ratings Model enerGuide Ratings Fireplace efficiency (%) 400DVBNVMH7 58.4 400DVBPVMH7 58.5 MHsc 149 Cleveland Drive • Paris, Kentucky 40361 www.mhsc.com...

This manual is also suitable for:

400dvbpvmh7

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