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This appliance may be installed in an aftermarket per-

manently 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.

In the Commonwealth of Massachusetts:

  Installation must be performed by a licensed plumber or 

gas fitter;

•  See  Table  of  Contents  for  location  of  additional  Com-

monwealth of Massachusetts requirements.

INSTALLATION

INSTRUCTIONS

A French manual is available upon request. Order P/N 506223-03
Ce manuel d’installation est disponible en francais, simplement en 

faire la demande. Numéro de la pièce 506223-03.

MODELS

INSTALLER:  Leave this manual with the appliance.

CONSUMER:  Retain this manual for future reference.

OTL Report No. 6-F-57-5

US

Portland

MLDVT-30NE

MLDVT-35NE

MLDVT-40NE

MLDVT-45NE

Millivolt Models

Electronic Models

MLDVT-30NM

MLDVT-30PM

MLDVT-35NM

MLDVT-35PM

MLDVT-40NM

MLDVT-40PM

MLDVT-45NM

MLDVT-45PM

INSTALLATEUR:  Laissez cette notice avec l'appareil.

CONSOMMATEUR:  Conservez cette notice pour con-

sultation ultérieure.

WARNING: IF THE INFORMATION IN THIS MANUAL 

IS NOT FOLLOWED EXACTLY, A FIRE OR EXPLO-

SION MAY RESULT CAUSING PROPERTY DAMAGE, 

PERSONAL INJURY OR LOSS OF LIFE.

DIRECT

 

VENT

MLDVT-30/35/40/45 SERIES

Do not store or use gasoline or other flammable 

vapors or liquids in the  vicinity of  this or any 

other appliance.

WHAT TO DO IF YOU SMELL GAS:

•  Do not 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 your gas supplier's 

  instructions.

•  If your gas supplier cannot be reached, call

  the fire department.

Installation and service must be performed by 

a qualified installer, service agency or the gas 

supplier

.

AVERTISSEMENT:  ASSUREZ-VOUS  DE  BIEN 

SUIVRE  LES  INSTRUCTIONS  DONNÉES  DANS 

CETTE NOTICE POUR RÉDUIRE AU MINIMUM LE 

RISQUE  D'INCENDIE  D'EXPLOSION  OU  POUR 

ÉVITER  TOUT  DOMMAGE  MATÉRIEL,  TOUTE 

BLESSURE OU LA MORT.

Ne pas entreposer ni utiliser d'essence ni d'autre 

vapeurs ou liquides inflammables dans le voisinage 

de cet appareil ou de tout autre appareil.

QUE  FAIRE  SI  VOUS  SENTEZ  UNE  ODEUR  DE 

GAZ:

•  Ne pas tenter d'allumer d'appareil.

•  Ne touchez à aucun interrupteur.  Ne pas vous 

servir des téléphones se trouvant dans le báti-

ment où vous vous trouvez.

•  Appelez  immédiatement  votre  fournisseur  de 

gaz depuis un voisin.  Suivez les instructions 

du fournisseur.

•  Si vous ne pouvez rejoindre le fournisseur de 

gaz, appelez le service des incendies.

L'installation et l'entretien doivent être assurés 

par un installeur ou un service d'entretien qualifié 

ou par le fournisseur de gaz.

VENTED GAS FIREPLACE HEATERS - DIRECT VENT MODELS

P/N 50605-02 REV. A  06/2009 

Summary of Contents for Merit MLDVT-45NE

Page 1: ...FE DIRECT VENT MLDVT 30 35 40 45 SERIES Do not store or use gasoline or other flammable vapors or liquids in the vicinity of this or any other appliance WHAT TO DO IF YOU SMELL GAS Do not light any ap...

Page 2: ...owing vent com ponents only Secure Vent Direct Vent System Compo nents Secure Flex Flexible Vent Components manufactured by Security Chimneys Inter national and Z FLEX Model GA Venting Systems listed...

Page 3: ...pane tanks are at pressures that will cause damage to valve components Verify that the tanks have step down regulators to reduce the pressure to safe levels Do not use these appliances if any part has...

Page 4: ...re Tap Manifold Burner Stage Terminal Ground TP PILOT OUT VENT LO TH TP TH TP HI IN IN Regulator Mounting Screw Cold Climate Insulation For cold climate installations seal all cracks around the applia...

Page 5: ...bustible and combustible exterior sidewall This distance may be decreased to 2 5 mm for non combustible exterior sidewalls only if the SV4 5HT 2 termination is used Be aware that this is a heat produc...

Page 6: ...e c n a r a e l C H y l b m e s s a r o t a l u g e r r e t e m t e e f 5 f o t h g i e h a n i h t i w m c 9 t e e f 3 y l b m e s s a r o t a l u g e r r e t e m e h t e v o b a t e e f 5 f o t h g...

Page 7: ...sides as detailed inTable6 withthefollowingexception When the unit is installed with one side flush with a wall the wall on the other side of the unit must not extend beyond the front edge of the unit...

Page 8: ...box floor securing the glass door Remove the door by tilting it outward at the bottom and lifting it up Set the door aside protecting it from inadvertent damage See Figure 46 on Page 30 TYPICAL INSTAL...

Page 9: ...P VENT WITH ONE 90 ELBOW Framing should be constructed of 2x4 or larger lumber Inches mm D 30 D is the required framing depth dimension when the finish material drywall thickness is 2 in 3mm A 2 Frami...

Page 10: ...rlocalcode requirements i e arebelowgradepenetrations of the gas line allowed etc IMPORTANT Ifpropaneisused beawarethat if tank size is too small i e under 100 lbs if this is the only gas appliance in...

Page 11: ...ructions should be used as a guideline and do not supersede local codes in any way Install vent according to local codes theseinstructions thecurrentNational Fuel Gas Code ANSI Z223 1 in the USA or th...

Page 12: ...5 5 5 5 2 6 4 0 1 2 0 0 3 7 5 5 7 4 0 0 1 1 0 2 6 6 5 2 5 0 2 2 0 0 4 5 7 6 5 2 6 5 0 0 3 0 0 3 9 6 5 7 5 0 0 0 2 0 2 2 7 6 1 0 3 0 0 4 5 3 7 5 2 1 6 1 0 0 2 0 3 5 9 7 5 2 6 6 0 1 0 2 0 3 1 8 5 7 6 0...

Page 13: ...are available in net lengths of 4 1 2 114 mm 10 1 2 267 mm 22 1 2 572 mm 34 1 2 876 mm and 46 1 2 1181 mm Refer to the Vent Section Length Charts on Page 12 for an aidinselectinglengthcombinations El...

Page 14: ...supplied with the flashing over the vent flashing joint See Figure 21 Loosen the storm collar screw Slide collar down until it meets the top of the flashing Tighten the ad justingscrew Applynon combus...

Page 15: ...ERE AN ELBOW IS THE ONLY VERTICAL COMPONENT IN THE SYSTEM See Figure 29 uWhenusingSecureFlex useFirestop Spacer SF4 5VF uCeiling Firestop Spacer SV4 5VF A Vent Restrictor as shown in Figure 14 Page 11...

Page 16: ...2 3 0 914 20 6 096 4 1 219 H H1 20 feet 6 096 m Max V V1 H H1 60 ft 18 3 m Max Figure 25 Top Vent three elbows VERTICAL VENT FIGURES TABLES CONTINUED Horizontal Outside Wall Termination System Figure...

Page 17: ...ously connected vent sections See Figure 17 on Page 13 I Continue installation of horizontal inclined sections Continue with the installation of the straightventsectionsinhorizontal inclinedrun as des...

Page 18: ...nations have been designed to perform in a wide range of weather condi tions Our terminations meet or exceed industry standards When selecting the locations of your horizontal terminations do not plac...

Page 19: ...S THE ONLY VERTICAL COMPONENT IN THE SYSTEM See Figure 29 Use Table 10 as an aid in venting component selection for a particular range of exterior wall thicknesses HORIZONTAL VENT FIGURES TABLES Figur...

Page 20: ...6 096 m Max Figure 31 Top Vent TWO 90 DEGREE ELBOWS See Table 10 on Page 19 as an aid in venting component selection for a particular range of exterior wall thicknesses HORIZONTAL VENT FIGURES TABLES...

Page 21: ...Figure 29 V H H V vWall Firestop Spacer SV4 5HF uCeiling Firestop Spacer SV4 5VF uWhen using Secure Flex use Firestop Spacer SF4 5VF vWhen using Secure Flex use Firestop Spacer SF4 5HF vWall Firestop...

Page 22: ...mperature sealant Catalog No 10K81 to the inner adapter collar approximately 1 2 inch from the end 3 Pull and extend the inner flexible vent pipe 4 Slidetheinnerflexpipeovertheadaptercol lar Ensure th...

Page 23: ...he electrical inlet cover plate from the side of the unit by removing the plate s securing screws See Figure 12 on Page 9 3 Removethe coverplate sknockoutandthen feedthepowersupplywirethroughtheknocko...

Page 24: ...artment Accessthevalvecompartmentbyremovingthe lower control compartment panel see Figure 38 by lifting and pulling the panel forward The panel is mounted on supporting tabs at the extreme right and l...

Page 25: ...e gas lines are tested and leak free be sure to rinse off the leak testing solution D Observe the individual tongues of flame on the burner Make sure all ports are open and producing flame evenly acro...

Page 26: ...ted Dis tribute these pieces over the surface of the burner as shown in Figures 44 and 45 Do not use more than is necessary Ensure that the main burner slots remain uncovered by the ember material Pos...

Page 27: ...35 H7666 WARNING Logs get very hot and will remain hot up to one hour after gas supply is turned off Handle only when logs are cool Left Rear Log Bracket Right Rear Log Bracket Rockwool Do Not Place...

Page 28: ...ot Place Rockwool Over Burner Slots Log Rack Volcanic Stone Right Rear Log Bracket 1 Position on the left rear log bracket 4 2 3 Position the left front log 2 and the right front log 3 against the log...

Page 29: ...29 NOTES...

Page 30: ...with the bottom of the door held away from the fireplace Figure 46 Hook the top flange of the door frame over the top of the firebox frame 6 Let the bottom of the door frame swing gentlyintowardsthefi...

Page 31: ...ont glass panel are in place and sealed during adjustment 1 Locate adjustment rod and adjust air shutter to the standard set ting as shown in Figure 49 adjustment rod is located in the lower control c...

Page 32: ...7 7 B F 5 4 V S e l b a t s u j d A 2 1 2 1 o t 2 1 7 g n i h s a l F 1 8 L 7 7 6 C S 5 4 V S 6 s r a l l o C m r o t S x o b s r a l l o c 6 4 2 2 H F H 5 4 V S k c a p 0 1 r e c a p S p o t s e r i...

Page 33: ...o f n i m r e T l a c i t r e V x e l F h t i w 2 1 6 o t t a l f d i g i r f o n o i t c e s r e t p a d A r a l l o c t r o p p u s f o o r t n e v d n a g n i h s a l f f o o r y l b m e s s a r a...

Page 34: ...on kit when performing any gas conversion Gas Conversion Kits Warning This conversion kit shall be installed by a qualified service agency in accordance with the manufacturer s instructionsandallappli...

Page 35: ...o pressure regula tor mounting screws Remove the pressure regulatoranddiaphragm Discardallremoved components Ensure the provided diaphragm is installed properly onto the replacement pressure regulator...

Page 36: ...pe joint compounds on flare fittings PILOT OUT VENT LO TH TP TH TP HI IN IN Pilot Stage Terminal Pressure Tap Inlet Pilot Gas Outlet Supply Gas Inlet Pressure Tap Manifold Burner Stage Terminal Ground...

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