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LENNOX HEARTH PRODUCTS  •  MERIT

® 

 SERIES DIRECT-VENT GAS FIREPLACES  •  MODELS MLDVT-30/35/40/45  •  INSTALLATION INSTRUCTIONS

TABLE OF CONTENTS 

Packaging .........................................Page  2
Introduction ......................................Page  2
General Information ..........................Page  2
Requirements for the 

   Commonwealth of Massachusetts

 .

Page  4

New York City Approval .....................

Page  4

Cold Climate Insulation .....................Page  5

Manufactured Home Requirements

 ..Page  5

Location ............................................Page  5
Vent Termination Clearances  ............Page  6
Appliance and Vent Clearances .........Page  8
Pre-Installation Steps ........................Page  9
Typical Installation Sequence  ...........Page  9
Detailed Installation Steps .................Page  9
Step 1. Framing .................................Page  9
Fireplace/Framing Specifications .......Page  10
Step 2. Routing Gas Line ..................Page  11

Step 3. Install the Venting System

 ....Page  12

Vertical Termination Systems ............

Page  13

Vent Section Length Chart ................

Page  13

Vertical Vent Tables and Figures ........Page  16
Horizontal Termination System .........Page  17
Horizontal Vent Tables and Figures ...Page  20
Venting Using Flexible Vent Pipe .......

Page  23

Step 4.  Field Wiring

 .........................

Page  24

Step 5.  Optional Blower Kit Wiring

 ..Page  25

Step 6.  Connecting Gas Line ...........Page  26
Step 7.  Verifying Appliance Operation Page  27
Step 8.  Installing Logs  ...................Page  28
Step 9.  Installing Glass Door  ..........

Page  31

Step 10. Burner Adjustments ............

Page  31

Step 11. Hood Installation .................

Page  33

Finishing Requirements ....................

Page  33

Step 12. Attaching Safety-in-
    Operation Warnings

 .......................

Page  34

Installation Accessories ....................

Page  35

Gas Conversion Kits

 .........................

Page  37

Please read and understand these 

instructions before beginning your 

installation.

PACKAGING

The  assembled vented gas fireplace heater is 

packaged with:

• 

One log set located in firebox area.

• 

One envelope containing the literature pack-

age which consists of the care and operations 

manual,  installation  instructions,  safety  in 

operation warning labels and warranty; en-

velope is located in the control compartment.

• 

One vent restrictor to be applied as shown on 

Page 12 ; restrictor  is taped to the envelope.

• 

One hood located behind the door assembly.

• 

One bag of decorative volcanic stone located 

in the control compartment.

• 

One bag of glowing embers located in the 

control compartment.

INTRODUCTION 

The  Millivolt  appliances  have  a  millivolt  gas 

control valve with piezo ignition system.  If any 

optional accessories that will require electrical 

power are to be installed, the electrical power 

must be provided at the time of appliance in-

stallation. 

The Electronic appliances have an electronic 

intermittent  pilot  ignition  system.  External 

electrical power is required to operate these 

units.  The battery back-up can be used in case 

of a power outage. 

These  vented  gas  fireplace  heaters  are  sealed 

combustion,  air-circulating  gas  fireplaces  de-

signed for residential applications. 

Use Only These Approved Vent Components

These  fireplaces  are  designed,  tested  and 

listed for operation and installation with, the 

following (4-1/2" inner and 7-1/2" outer) vent 

components only:

   

Secure Vent™

 Direct-Vent System Compo-

nents  manufactured  by  Security  Chimneys 

International, 

   

Secure  Flex™

  Flexible  Vent  Components 

manufactured  by  Security  Chimneys  Inter-

national and 

   

Z-FLEX™ Model GA Venting Systems listed 

to UL1777 and ULCS635 manufactured by 

Flexmaster Canada Limited. 

These approved vent system components are 

labeled  for  identification.    DO  NOT  use  any 

other  manufacturer’s  vent  components  with 

these appliances.

 

Children and adults should be alerted to the 

hazards  of  high  surface  temperature  and 

should stay away to avoid burns or clothing 

ignition. 

Les enfants et les adultes devraient être 

infor-més  des  dangers  que  posent  les 

températures  de  surface  élevées  et  se 

tenir à distance afin d’éviter des brûlures 

ou que leurs vêtements ne s’enflamment.

DO  NOT  ATTEMPT  TO  ALTER  OR  MODIFY 

THE  CONSTRUCTION  OF  THE  APPLIANCE 

OR ITS COMPONENTS. ANY MODIFICATION 

OR ALTERATION MAY VOID THE WARRANTY, 

CERTIFICATION AND LISTINGS OF THIS UNIT.

       WARNING 

Young children should be care-

fully supervised when they are 

in the same room as the appli-

ance. Toddlers, young children 

and others may be susceptible 

to accidental contact burns.  A 

physical barrier is recommended 

if there are at risk individuals in 

the house.  To restrict access to 

a fireplace or stove, install an 

adjustable  safety  gate  to  keep 

toddlers,  young  children  and 

other at risk individuals out of 

the  room  and  away  from  hot 

surfaces.

       AVERTISSEMENT 

Les jeunes enfants devraient être 

surveillés étroitement lorsqu’ils 

se trouvent dans la même pièce 

que l’appareil. Les tout petits, 

les jeunes enfants ou les adultes 

peuvent subir des brûlures s’ils 

viennent en contact avec la sur-

face chaude.  Il est recommandé 

d’installer une barrière physique 

si des personnes à risques habi-

tent la maison.  Pour empêcher 

l’accès à un foyer ou à un poêle, 

installez une barrière de sécu-

rité; cette mesure empêchera les 

tout petits, les jeunes enfants et 

toute  autre  personne  à  risque 

d’avoir accès à la pièce et aux 

surfaces chaudes.

GENERAL INFORMATION

Содержание Meris SeriesM LDVT-45NE

Страница 1: ...T AVISO HOT GLASS WILL CAUSE BURNS DO NOT TOUCH GLASS UNTIL COOLED NEVER ALLOW CHILDREN TO TOUCH GLASS UNE SURFACE VITR E CHAUDE PEUT CAUSER DES BR LURES LAISSER REFROIDIR LA SURFACE VITR E AVANT D Y...

Страница 2: ...lation The Electronic appliances have an electronic intermittent pilot ignition system External electrical power is required to operate these units The battery back up can be used in case of a power o...

Страница 3: ...lation de cet appareil These appliances comply with National Safety Standards and are tested and listed by ETL Intertek Report No 100326540PRT 001 to ANSI Z21 88 in Canada CSA 2 33 and CAN CGA 2 17 M9...

Страница 4: ...jurisdiction and by the USA National Fuel Gas Code NFPA 54 ANSI Z223 1 latest edition or in Canada the CAN CSA B149 1 codes latest edition Installtheapplianceaccordingtotheregulations of the local au...

Страница 5: ...le etc a metal or woodbarriercoveringtheentirebottomsurface must be used Cold Climate Insulation For cold climate installations seal all cracks around your appliance with noncombustible material and w...

Страница 6: ...6 12 to 7 12 1 25 0 38 7 12 to 8 12 1 5 0 46 8 12 to 9 12 2 0 0 61 9 12 to 10 12 2 5 0 76 10 12 to 11 12 3 25 0 99 11 12 to 12 12 4 0 1 22 12 12 to 14 12 5 0 1 52 14 12 to 16 12 6 0 1 83 16 12 to 18 1...

Страница 7: ...e t e m t e e f 5 1 f o t h g i e h a n i h t i w m c 1 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 1 f o t h g i e h a n i h t i w m c 1 9 t e e f 3 y l b m e s...

Страница 8: ...ment door Any hearth extension used is for appearance only and does not have to conform to standard hearth extension installation requirements ShelfHeight Toprovideforthelowestpossibleshelfsurface the...

Страница 9: ...eir equivalent Unit Being Secured by its Nailing Flanges to the Framing Left Side Front Corner of Fireplace Shown Right side requirements are the same NOTE The nailing flanges combustible mem bers and...

Страница 10: ...Dimensions Model No A B C D MLDVT 30 in 30 1 4 35 1 4 39 1 4 16 mm 768 895 997 406 MLDVT 35 in 35 1 4 35 1 4 39 1 4 16 mm 895 895 997 406 MLDVT 40 in 40 1 4 40 1 4 44 1 4 16 mm 1022 1022 1124 406 MLD...

Страница 11: ...nts outlined in the National Fuel Gas Code NFPA 54 latest edition USA or CAN CSA B149 1 latest edition Canada Also see Figure 13 Figure 15 Route Gas Line 3 76 mm Left Side Front Corner of Fireplace Fr...

Страница 12: ...u foumisseunde gaz Useonlyapprovedventingcomponents See Approved Vent Components on Page 2 These fireplaces must be vented directly to the outside The vent system may not service multiple appliances a...

Страница 13: ...4 1 1 3 5 5 2 4 4 0 2 2 0 1 1 5 1 5 8 3 5 5 7 8 4 4 1 0 0 2 1 1 4 1 9 4 5 5 7 5 4 1 0 2 1 1 1 5 1 8 5 5 5 6 4 0 0 0 0 2 1 2 1 5 2 6 5 5 7 8 6 4 1 0 0 0 2 1 3 1 5 8 6 5 5 7 3 7 4 0 1 0 0 2 1 3 1 3 7 5...

Страница 14: ...nal specifications Where required a telescopic vent section SV4 5LA may be used to provide the installer withanoptionininstallingintightand confined spaces or where the vent run made up of fixed lengt...

Страница 15: ...align with the required direction of the next vent run element Twist elbow sections in a clockwise direction onlysoastoavoidthepossibilityofunlocking any of the previously connected vent sections see...

Страница 16: ...all the way down to at or near level SV4 5VF Secure Vent SF4 5VF Secure Flex firestop spacer must be used anytime vent pipe passes through a combustible floor or ceiling SV4 5HF Secure Vent SF4 5HF S...

Страница 17: ...op Vent three elbows LENNOX HEARTH PRODUCTS MERIT SERIES DIRECT VENT GAS FIREPLACES MODELS MLDVT 30 35 40 45 INSTALLATION INSTRUCTIONS VERTICAL VENT FIGURES TABLES continued Horizontal Outside Wall Te...

Страница 18: ...vent run element Twist elbow sections in a clockwise direction only so as to avoid the possibility of unlocking any ofthepreviouslyconnectedventsections see Figure 19 on Page 14 I Continue installatio...

Страница 19: ...ng the use of the fireplace Young children should be carefully supervised when they are in the same area as a hot termination To prevent contact with hot surfaces we recommend the use of a Termination...

Страница 20: ...NENT IN THE SYSTEM see Figure 31 Use Table 8 as an aid in venting component selection for a particular range of exterior wall thicknesses Figure 32 Top Vent ONE 90 DEGREE ELBOW ELBOW CONNECTION NOT DI...

Страница 21: ...HEARTH PRODUCTS MERIT SERIES DIRECT VENT GAS FIREPLACES MODELS MLDVT 30 35 40 45 INSTALLATION INSTRUCTIONS See Table 8 on Page 20 as an aid in venting component selection for a particular range of ext...

Страница 22: ...g Firestop Spacer SV4 5VF When using Secure FlexTM use Firestop Spacer SF4 5VF When using Secure Flex use Firestop Spacer SF4 5HF Wall Firestop Spacer SV4 5HF See Table 8 on Page 20 as anaidinventingc...

Страница 23: ...proximately 1 2 inch from the end 3 Pull and extend the inner flexible vent pipe 4 Slidetheinnerflexpipeovertheadaptorcol lar Ensure the flexible vent pipe completely engages the adaptor collar to a d...

Страница 24: ...TP TH TP IN ORANGE THTP BLACK TP GREEN TH TO WALL SWITCH OR THERMOSTAT Refer to Section A for millivolt appliances and Section B for electronic appliances The gas valve is set in place and pre wired a...

Страница 25: ...itch to the OFF position 10 After the wiring is complete replace the cover plate Note No batteries to be installed in the battery holderuntilapoweroutage oriftheapplianceis to be operated solely with...

Страница 26: ...ff valve and gas lex line and pull the assembly forward out of the compart ment Separate the shut off valve from the gas flex line Determine the length of pipe needed to route the gas line from the la...

Страница 27: ...he pilot lighting instructions provided in the Care and Operation Instructions manual For piezo igniter location see Figure 41 on Page 26 millivolt appliances only Note Lighting Instructions are also...

Страница 28: ...he rear log 1 as shown Position it on the left rear log bracket 2 Place the left front log 2 as shown Posi tion it against the left front of the log rack 3 Place the right front log 3 as shown Posi ti...

Страница 29: ...35 H7666 Left Rear Log Bracket Right Rear Log Bracket Glowing Embers Do not place glowing ember over burner slots Log Rack Volcanic Stone 4 5 3 2 1 2 3 1 Position on the left rear log bracket Right Re...

Страница 30: ...g bracket 4 2 3 Position the left front log 2 and the right front log 3 against the log rack 3 2 Log Number Description 1 Rear Log 2 Left Front Log 3 Right Front Log 4 Left Cross Log 5 Right Cross Log...

Страница 31: ...hannel above the door Pull the door forward 4 Retrieve the glass door Visually inspect the gasket on the backside of the frame Gasket surface must be clean free of irregularities and seated firmly 5 I...

Страница 32: ...HEARTH PRODUCTS MERIT SERIES DIRECT VENT GAS FIREPLACES MODELS MLDVT 30 35 40 45 INSTALLATION INSTRUCTIONS 1 Locateadjustmentrodandadjustairshutter to the standard setting as shown in Figure 50 adjust...

Страница 33: ...ng flush with the finished wall position framework to accommodate the thickness of the finished wall Figure 53 See Page 5 for Cold Climate Insulation and Page 8 for Clearances Top of Appliance 3 76 mm...

Страница 34: ...estas instrucciones y prosiga de la siguiente manera 1 Identifique el interruptor o el termostato de pared quecontrolalachimenea verifiquequeelinterruptor opera la chimenea encendi ndola y apag ndola...

Страница 35: ...V4 5VF 10 Firestop Spacer Vertical rigid 1 1 1 spacing 10 pack 96K92 SV4 5SP Support Plate LENNOX HEARTH PRODUCTS MERIT SERIES DIRECT VENT GAS FIREPLACES MODELS MLDVT 30 35 40 45 INSTALLATION INSTRUCT...

Страница 36: ...in 190 5 mm for flex 6 pack H7748 FVK36 36 Flex Connector Kit Note Flex attaches to appliance collar at one end and to rigid venting at other end Listed Secure Vent Components Cat Model Description 1...

Страница 37: ...e front glass door assembly See Figure 49 on Page 31 Step 3 Carefully remove the logs Take care not to break the logs Step 4 Refer to Figure 55 on Page 38 Remove the burner assembly with attached vent...

Страница 38: ...sure regulator and diaphragm Discard allremovedcomponents Ensuretheprovided diaphragm is installed properly onto the replacement pressure regulator and install the new pressure regulator using the new...

Страница 39: ...the orifice with the one provided with the kit Exercise extreme care to prevent damagetoorbreakageoftheigniterassembly All Models Step 9 Refer to Figure 55 on Page 38 and Figure 60 VERIFY THE PROPER O...

Страница 40: ...time without notice in design materials specifications prices and also to discontinue colors styles and products Consult your local distributor for fireplace code information 1508 Elm Hill Pike Suite...

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