Lennox MPD-3530CPM-B, MPDR-3328CPE-B, MPDR-3328CPM-B, MPD-3530CNE-B, MPDR-3328CNE-B User Manual

...

INSTALLATION INSTRUCTIONS

AVERTISSEMENT : Assurez-vous de bien suivre les instructions données dans cette notice pour réduire au minimum le risque d’incindie ou d’explosion ou pour éviter tout dommage matériel, toute blessure ou la mort.

WARNING: If the information in these instructions is not followed exactly, a ﬁre or explosion may result, causing property damage, personal injury, or death.

WARNING /AVERTISSEMENT/AVISO

• HOT GLASS WILL CAUSE BURNS.

• DO NOT TOUCH GLASS UNTIL COOLED.

• NEVER ALLOW CHILDREN TO TOUCH GLASS.

• UNE SURFACE VITRÉE CHAUDE PEUT CAUSER DES BRÛLURES.

• LAISSER REFROIDIR LA SURFACE VITRÉE AVANT D'Y TOUCHER.

• NE PERMETTEZ JAMAIS À UN ENFANT DE TOUCHER LA SURFACE VITRÉE.

• EL VIDRIO CALIENTE CAUSARÁ QUEMADURAS.

• USTED DEBE NUNCA TOCAR EL VIDRIO CALIENTE.

• LOS NIÑOS DEBEN NUNCA TOCAR EL VIDRIO.

- 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.

- Ne pas entreposer ni utilizer d’essence ni d’autres 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 aucan interrupteur. Ne pas vous servir des

téléphones se trouvant dans le bâtiment où 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 incindies.

- L’installation et l’entretien doivent être assurés par un installateur ou un service d’entretien qualiﬁé ou par le fournisseur de gaz.

MPD Direct-Vent Gas Fireplaces

P/N 850014 Rev. V 08/2011

This manual is one of a set of two supporting this product. Refer to P/N 875014M for Care and Operation Instructions.

Ce manuel est disponible en francais, simplement en faire la demande. Numéro de la pièce 850014CF.

INSTALLER: Leave this manual with the appliance. CONSUMER: Retain this manual for future reference.

INSTALLATEUR : Laissez cette notice avec l’appareil. CONSOMMATEUR : Conservez cette notice pour consultation ultérieure.

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.

MODELS

MPDT-3328CNM-B MPDT-3328CPM-B MPDR-3328CNM-B MPDR-3328CPM-B MPD-3530CNM-B MPD-3530CPM-B

OTL Report No. 116-F-13-4

Please read and understand these instructions

MILLIVOLT:

MPD-4035CNM-B MPD-4035CPM-B MPD-4540CNM-B MPD-4540CPM-B

Portland

MPDT-3328CNE-B MPDT-3328CPE-B MPDR-3328CNE-B MPDR-3328CPE-B MPD-3530CNE-B MPD-3530CPE-B

before starting installation.

ELECTRONIC:

MPD-4035CNE-B MPD-4035CPE-B MPD-4540CNE-B MPD-4540CPE-B

LENNOX HEARTH PRODUCTS • MERIT® PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS

TABLE OF CONTENTS

Packaging .................................................... 2

Introduction ................................................. 2

General Information ..................................... 2

Requirements for the

Commonwealth of Massachusetts ............ 4

New York City Approval ................................ 4

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

Manufactured Home Requirements ............. 5

Location 5

Vent Termination Clearances ....................... 6

Appliance and Vent Clearances .................... 8

Pre-Installation Steps ................................. 10

Typical Installation Sequence .................... 10

Detailed Installation Steps .......................... 10

Step 1. Framing .......................................... 10

Fireplace and Framing Speciﬁcations ....... 11

Step 2. Routing Gas Line ........................... 12

Step 3. Preparing Appliance Vent Collar ..... 13

Step 4. Installing Vent System ................... 13

Vertical Termination Systems .................. 14

Vent Section Length Chart ...................... 14

Vertical Vent Tables and Figures .............. 17

Horizontal Termination System ............... 19

Horizontal Vent Tables and Figures ......... 21

Venting Using Flexible Vent Pipe ............. 24

Step 5. Field Wiring ................................... 25

Step 6. Optional Blower Kit Wiring ............ 26

Step 7. Connecting Gas Line ..................... 26

Step 8. Verifying Appliance Operation ........... 27

Step 9. Installing Logs ............................. 28

Step 10. Remove/Install Glass Door .......... 32

Step 11. Burner Adjustments ..................... 32

Step 12. Hood Installation .......................... 34

Finishing Requirements ............................. 34

Step 13. Attaching Safety-in-Operation

Warnings ................................................ 35

Installation Accessories ............................. 36

Gas Conversion Kits .................................. 38

Please read and understand these instructions before beginning your

installation.

PACKAGING

The assembled vented gas ﬁreplace heater is packaged with:

• (1 set) Logs (packaged in a carton inside the

ﬁrebox).

• (1 bag) Glowing Embers (in bottom compart-

ment).

• Literature Kit (envelope in bottom com-

partment containing Care and Operation Instructions, Installation Instructions, Safety- In-Operation Warning Labels, Warranty).

• (1) Vent Restrictor (attached to Literature Kit

envelope).

• (1) Hood (inside ﬁrebox).

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 installation.

The Electronic appliances are designed to operate on natural or propane gas. An electronic intermittent pilot ignition system provides safe, efﬁcient operation. External electrical power is required to operate these units.

These vented gas ﬁreplace heaters are sealed combustion, air-circulating gas ﬁreplaces designed for residential applications.

Approved Vent Components

These ﬁreplaces are designed, tested and listed for operation and installation with the following vent components only:

• Secure Vent™ Direct-Vent System Compo-

nents manufactured by Security Chimneys International,

• Secure Flex™ Flexible Vent Components

manufactured by Security Chimneys International and

• Z-FLEX™ Model GA Venting Systems listed

to UL1777 and ULCS635 manufactured by Flexmaster Canada Limited.

Use only the correct size venting (4-1/2" inner and 7-1/2" outer).

These approved vent system components are labeled for identiﬁcation. DO NOT use any other manufacturer’s vent components with these appliances.

GENERAL INFORMATION

WARNING

Young children should be carefully supervised when they are in the same room as the appliance. 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 surface chaude. Il est recommandé d’installer une barrière physique si des personnes à risques habitent la maison. Pour empêcher l’accès à un foyer ou à un poêle, installez une barrière de sécurité; 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.

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.

LENNOX HEARTH PRODUCTS • MERIT® PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS

WARNING

Improper installation, adjustment, alteration, service 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.

WARNING

Failure to comply with these installation instructions will result in an improperly installed and operating appliance, voiding its warranty. Any change to this appliance and/or its operating controls is dangerous.

WARNING

Clothing or other flammable material should not be placed on or near the appliance.

AVERTISSEMENT

On ne devrait pas placer de vêtements ni d’autres matières inﬂammables sur l’appareil ni à proximité.

WARNING

Any safety screen or guard removed for servicing the appliance must be replaced prior to operating the appliance.

AVERTISSEMENT

Tout écran ou protecteur retiré pour permettre l’entretien de l’appareil doit être remis en place avant de mettre l’appareil en marche.

Note: Installation and repair should be done by a qualiﬁed service person. The appliance should be inspected before use and at least annually by a professional service person. More frequent cleaning may be required due to excessive lint from carpeting, bedding material, etcetera. It is imperative that control compartments, burners and circulating air passageways of the appliance be kept clean.

Remarque: L’installation et la réparation devrait être conﬁées à un technicien qualiﬁé. L’appareil devrait faire l’objet d’une inspection par un technicien professionnel avant d’être utilisé et au moins une fois l’an par la suite. Des nettoyages plus fréquents peuvent être nécessaires si les tapis, la literie, et cetera produisent une quantité importante de pous-sière. Il est essentiel que les compartiments abritant les commandes, les brûleurs et les conduits de circulation d’air de l’appareil soient tenus propres.

Do not use these appliances if any part has been under water. Immediately call a qualiﬁed, professional service technician to inspect the appliance and to replace any parts of the control system and any gas control which have been under water.

Ne pas utiliser cet appareil s’il a été plongé, même partiellement, dans l’eau. Appeler un technicien qualiﬁé pour inspecter l’appareil et remplacer toute partie du système de commande et toute commande qui a été plongée dans l’eau.

IMPROPER INSTALLATION OR USE OF THIS APPLIANCE CAN CAUSE SERIOUS INJURY OR DEATH FROM FIRE, BURNS, EXPLOSION OR CARBON MONOXIDE POISONING.

Only trim kit(s) supplied by the manufacturer shall be used in the installation of this appliance.

Seules les trousses de garniture fournies par le fabricant doivent être utilisées pour l’installation de cet appareil.

These appliances comply with National Safety Standards and are tested and listed by OMNI-Test Laboratories, Inc. (Report No. 116-F-13-4) to ANSI Z21.88 (in Canada, CSA-

2.33), and CAN/CGA-2.17-M91 in both USA and Canada, as vented gas ﬁreplace heaters.

Both millivolt and electronic versions of these appliances are listed by OMNI-Test Laboratories for installation in bedrooms and Manufactured Homes.

Misc. Codes / Standards

The Installation must conform to local codes or, in the absence of local codes, with the National

Fuel Gas Code, ANSI Z223.1/NFPA 54 - latest edition (In Canada, the current CAN/CSA-B149.1

installation code).

The appliance, when installed, must be electrically grounded and wired in accordance with local codes or, in the absence of local codes, with the National Electrical Code, ANSI/NFPA

70 - latest edition, or the Canadian Electrical Code, CSA C22.1 - latest edition.

Provide adequate clearances around air openings and adequate accessibility clearance for service and proper operation. Never obstruct the front or back openings of the appliance.

These appliances are designed to operate on natural or propane gas only. The use of other fuels or combination of fuels will degrade the performance of this system and may be dangerous.

These ﬁreplaces are designed as supplemental heaters. Therefore, it is advisable to have an alternate primary heat source when installed in a dwelling.

Millivolt Models - The millivolt appliances are manually controlled and feature a spark igniter (piezo) that allows the appliance's pilot gas to be lit without the use of matches or batteries. This system provides continued service in the event of a power outage.

Millivolt models come standard with a manually modulated gas valve; ﬂame appearance and heat output can be controlled at the gas valve. The BTU Input for these appliances is shown in Table 1.

Electronic Models - Electronic models have a ﬁxed rate gas valve. Input of electronic models is shown in Table 1.

Input (BTU/HR) Gas Valves (all models)

Models

MPDT/R-3328

(Millivolt)

MPD-3530

(Millivolt)

MPD-4035

(Millivolt)

MPD-4540

(Millivolt)

MPDT/R-3328

(Electronic)

MPD3530

(Electronic)

MPD4035

(Electronic)

MPD4540

(Electronic)

Input Rate (BTU / HR)

Nat. Gas Prop. Gas

17,500 high

11,700 low

20,000 high

12,800 low

27,000 high

18,500 low

29,000 high

20,500 low

17,500 17,500

20,000 20,000

27,000 27,000

29,000 29,000

17,500 high

14,000 low

20,000 high

15,200 low

27,000 high

21,500 low

29,000 high

22,500 low

Table 1

LENNOX HEARTH PRODUCTS • MERIT® PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS

Gas Pressure - All Models

Tables 2 and 3 show the appliances' inlet and manifold gas pressure requirements:

Inlet Gas Supply Pressure

(all models)

Fuel # Minimum Maximum

Natural Gas

Propane

4.5" WC

(1.12 kPa)

11.0" WC

(2.74 kPa)

10.5" WC

(2.61 kPa)

13.0" WC

(3.23 kPa)

Table 2

Manifold Gas Supply Pressure

(all models)

Fuel # Low High

Natural

Gas

Propane

(Lo) 1.6" WC

(0.40 kPa)

(Lo) 6.3" WC

(1.57 kPa)

(Hi) 3.5" WC

(0.87 kPa)

(Hi) 10.0" WC

(2.49 kPa)

Table 3

Test gauge connections are provided on the front of the millivolt and electronic gas control valve (identiﬁed IN for the inlet and OUT for the manifold side). The control valves have a 3/8" (10mm) NPT thread inlet and outlet side of the valve (refer to Figures 1 and 2).

Propane 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.

These appliances must be isolated from the gas supply piping system (by closing their individual manual shut-off valve) during any pressure testing of the gas supply piping system at test pressures equal to or less than 1/2 psig (3.5 kPa).

These appliances and their individual shut-off valves must be disconnected from the gas supply piping system during any pressure testing of that system at pressures greater than 1/2 psig (3.5 kPa).

These appliances must not be connected to a chimney or ﬂue serving a separate solid fuel burning appliance.

Oriﬁce Sizes - Sea Level to High Altitude (All Models)

These appliances are tested and approved for installation at elevations of 0-4500 feet (0-1372 meters) above sea level using the standard burner oriﬁce sizes (marked with an "*" in Table 4 ).

For elevations above 4500 feet, contact your gas supplier or qualiﬁed service technician.

Deration - At higher elevations, the amount of BTU fuel value delivered must be reduced by either using gas that has been derated by the gas company or by changing the burner oriﬁce to a smaller size as regulated by the local authorities having 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.

Install the appliance according to the regulations of the local authorities having jurisdiction and, in the USA, the National Fuel Gas Code NFPA 54 / ANSI Z223.1 - latest edition or, in Canada, the CAN/CSA-B149.1 - latest edition.

Flame breadth, height and width will dimenish 4% for every 1,000 feet of altitude.

Burner Oriﬁce Sizes

Elevation 0-4500 feet ( 0-1372 meters)

Model

Series

MPDT-3328 MPDR-3328

MPD-3530

MPD-4035

MPD-4540

Table 4

Nat.Gas

drill size (inches)

#45 (0.0820")*

39L66•

#44 (0.0860")*

60J80•

#37 (0.1040")*

24M10•

#36 (0.1065")*

18L40•

* Standard size installed at factory

• Part /Cat. Number

Propane

drill size (inches)

0.048 inch 99K78•

#55 (0.0520")*

19L52•

0.063 inch 21L01•

#52 (0.0635")*

37G00•

Gas Valve Diagrams

See Figure 1 for Millivolt models and Figure 2 For Electronic Models.

Main Gas Control Knob

OFF/PILOT/ON

OUT

Manifold Pressure Tap

Inlet Pressure Tap

Pilot Adjustment

HI/LO Variable Flame Height Adjustment

Screw

HTPTHTPT

Figure 1: SIT Millivolt Gas Valve

Electronic

Gas Control

Valve

P SI

Inlet

Pressure

Port

ON/OFF Switch Manifold Pressure Port

R E

IGN

OFF

CONTROL

Figure 2: Honeywell Electronic Gas Valve

REQUIREMENTS FOR THE COMMONWEALTH OF MASSACHUSETTS

These ﬁreplaces are approved for installation in the US state of Massachusetts if the following additional requirements are met:

• Install this appliance in accordance with Massachusetts Rules and Regulations 248 C.M.R.

• Installation and repair must be done by a plumber or gas ﬁtter licensed in the Commonwealth of Massachusetts.

• The ﬂexible gas line connector used shall not exceed 36 inches (92 centimeters) in length.

• The individual manual shut-off must be a T-handle type valve.

Massachusetts Horizontal Vent Requirements

In the Commonwealth of Massachusetts, horizontal terminations installed less than seven (7) feet above the ﬁnished grade must comply with the following additional requirements:

• A hard wired carbon monoxide detector with an alarm and battery back-up must be installed on the ﬂoor level where the gas ﬁreplace is installed. The carbon monoxide detector must comply with NFPA 720, be ANSI/UL 2034 listed and be ISA certiﬁed.

• A metal or plastic identiﬁcation plate must be permanently mounted to the exterior of the building at a minimum height of eight (8) feet above grade and be directly in line with the horizontal termination. The sign must read, in print size no less than one-half (1/2) inch in size, GAS VENT DIRECTLY BELOW. KEEP CLEAR OF ALL OBSTRUCTIONS.

NEW YORK CITY, NEW YORK (MEA)

Installation of these ﬁreplaces are approved for installation in New York City in the US state of New York.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

LENNOX HEARTH PRODUCTS • MERIT® PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS

COLD CLIMATE INSULATION

For cold climate installations, seal all cracks around your appliance with noncombustible material and wherever cold air could enter the room. It is especially important to insulate outside chase cavity between studs and under ﬂoor on which appliance rests, if ﬂoor is above ground level. Gas line holes and other openings should be caulked or stuffed with unfaced ﬁberglass insulation.

If the ﬁreplace is being installed on a cement slab in cold climates, a sheet of plywood or other raised platform can be placed underneath to prevent conduction of cold transferring to the ﬁreplace and into the room. It also helps to sheetrock inside surfaces and tape for maximum air tightness and caulk ﬁrestops.

MANUFACTURED HOME REQUIREMENTS

This appliance may be installed in an aftermarket permanently located, manufactured 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 Standard for Installation in Mobile Homes, CAN/ CSA Z240 MH Series, in Canada.

Cet appareil peut être installé cómme du matéri-el d'origine dans une maison préfabriquée (É.U. seulement) ou mobile et doit être installé selon les instructions du fabricant et conformément à la norme Manufactured Home Constructions and Safety, Title 24 CFR, Part 3200 aux Unis ou à la norme Can/CSA-Z240 Série MM, Maisons mobiles au Canada.

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.

Cet appareil doit être utilisé uniquement avec le type de gaz indiqué sur la plaque signalétique. Cet appareil ne peut être converti à d'autres gaz, sauf si une trousse de conversion est utilisée.

CAUTION: Ensure that the cross members are not cut or weakened during installation. The structural integrity of the manufactured home ﬂoor, wall, and ceiling / roof must be maintained.

CAUTION: This appliance must be grounded to the chassis of the manufactured home in accordance with local codes or in the absence of local codes, with the National Electrical Code ANSI / NFPA 70

- latest edition or the Canadian Electrical Code CSA C22.1 - latest edition.

REAR VENT

APPLICATION

TOP VENT

APPLICATION

TOP VENT

INSTALLATION

VERTICAL VENT (Rear Vent Application)

HORIZONTAL VENT (Rear Vent Application with a chase)

RECESSED

REAR VENT

APPLICATION

TOP VENT

APPLICATION

TOP VENT

APPLICATION

HORIZONTAL VENT (Rear Vent Application without a chase)

APPLICATION

TOP VENT

APPLICATION

HORIZONTAL VENT (Top Vent Application)

Figure 3: Typical Locations

LOCATION

In selecting the location, the aesthetic and functional use of the appliance are primary concerns. However, vent system routing to the exterior and access to the fuel supply are also important.

Due to high temperatures, the appliance should be located out of trafﬁc and away from furniture and draperies (Figure 3).

En raison des températures élevées, l’appareil devrait être installé dans un endroit où il y a peu de circulation et loin du mobilier et des tentures (Figure 3).

The location should also be free of electrical, plumbing or other heating/air conditioning ducting.

These direct-vent appliances are uniquely suited for installations requiring a utility shelf positioned directly above the ﬁreplace. Utility shelves like these are commonly used for locat-ing television sets and decorative plants.

VERTICAL VENT (Top Vent Application)

Be aware that this is a heat producing appliance. Objects placed above the unit are exposed to elevated temperatures.

Do not insulate the space between the appliance and the area above it (see Figure 8 ).

The minimum height from the base of the appliance to the underside of combustible materials used to construct a utility shelf in this fashion is shown in Figure 8.

The appliance should be mounted on a fully supported base extending the full width and depth of the unit. The appliance may be located on or near conventional construction materials. However, if installed on combustible materials, such as carpeting, vinyl tile, etc., a metal or wood barrier covering the entire bottom surface must be used.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

LENNOX HEARTH PRODUCTS • MERIT® PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS

LOWEST DISCHARGE OPENING OF VENT

TERMINATION HEIGHTS FOR VENTS ABOVE

VENT TERMINATION CLEARANCES

These instructions should be used as a guideline and do not supersede local codes in any way. Install venting according to local codes, these instructions, the current National Fuel Gas Code (ANSI-Z223.1) in the USA or the current standards of CAN/CSA-B149.1 in Canada.

Vertical Vent Termination Clearances

Terminate multiple vent terminations according to the installation codes listed above and Figures 4 and 5.

12”

(305mm)

Minimum

Vertical Vent Termination Clearances

Horizontal Overhang

2 FT MIN.

Termination

Storm Collar

Flashing

Concentric

Vent Pipe

FLAT OR SLOPED ROOFS

Vent

*H = MINIMUM HEIGHT FROM ROOF TO

2 FT MIN.

Lowest

Discharge

Opening

1 inch (25.4 mm) Minimum Clearance to Combustibles

Vertical Wall

Roof Pitch is X/12

Figure 5

Horizontal Vent Termination Clearances

The vent / air intake termination clearances above the high side of an angled roof are as shown in the following chart:

Termination Heights For Vents

bove Flat Or Sloped Roofs ef. NFPA 54 / ANSI Z223.1

oof Pitch *H (ft) *H (m)

Flat to 6/12 1.0 0.3 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 18/12 7.0 2.13 18/12 to 20/12 7.5 2.29 20/12 to 21/12 8.0 2.44

Figure 4 - Multiple Terminations

The horizontal vent termination must have a minimum of 6" (152 mm) clearance to any overhead combustible projection of 2-1/2" (64 mm) or less (see Figure 6). For projections exceeding 2-1/2" (64 mm), see Figure 6. For additional vent location restrictions refer to Figure 7 on Page 7.

Horizontal Vent Termination Clearances

Combustible Projection

inches or less in length

2-1/2

Combustible Projection greater

than 2-1/2 inches in length

Ventilated

Soffit

Unventilated

Soffit

18"

(457 mm)

12"

(305 mm)

(152 mm)

All horizontal terminations may be located as close as 6” (152mm) to any (non-combustible and combustible) exterior sidewall. This distance may be decreased to 2” (51mm) for non-combustible exterior sidewalls only, if the SV4.5HT-2 termination is used.

Termination Kit

Side Elevation View

Termination Kit

Note - See Figure 37 on Page 20 for the exterior wall recess

Figure 6

allowances of the square horizontal termination.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

LENNOX HEARTH PRODUCTS • MERIT® PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS

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EXTERIOR HORIZONTAL VENT TERMINATION CLEARANCE REQUIREMENTS

NOTE: Local Codes Or Regulations

* See Item D in the Text Below.

Exterior Wall

*18”

Horizontal Termination

Inside Corner

6”

Detail D

Ventilated Soffit

Fixed

Closed

Window

= Air Supply Inlet

Inside

Corner Detail

Operable

Window

= Vent Termination

= Area where Termination is not Permitted

May Require Different Clearances.

NOTE: Location Of The Vent Termination Must Not Interfere With Access To The Electrical Service.

= 9” in U.S.

= 12” in Canada

3 ft.

Figure 7

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

LENNOX HEARTH PRODUCTS • MERIT® PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS

MINIMUM CLEARANCES TO COMBUSTIBLES

Appliance And Vent Clearances

The appliance is approved with zero clearance to combustible materials on all sides (as detailed in Table 5), with the following exception: 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. In addition, when the unit is recessed, the side walls surrounding

the unit must not extend beyond the front edge of the unit (see Figure 3).

Hearth Extension - A hearth extension is not required with this appliance.

If a hearth extension is used, do not block the lower control compartment door. Any hearth extension used is for appearance only and does not have to conform to standard hearth extension installation requirements.

Shelf Height - To provide for the lowest possible shelf surface, use the

alternate rear vent outlet, the venting attached to the top vent should be routed in a way to minimize obstructions to the space above the appliance.

Do not insulate the space between the appliance and the area above it (see Figure 8). The minimum height from the base of the appliance to

the underside of combustible materials used to construct a utility shelf in this fashion is shown in Figure 8.

MINIMUM CLEARANCES* Inches (millimeters)

Back 1/2 in. (13)

0 (0) from Spacers Or Dimples

Sides 1/2 in. (13)

0 (0) from Spacers Or Dimples **

Top Spacers 0 (0)

Floor 0 (0)

From Bottom of Unit To Ceiling 64 (1626)

Vent 3 (76)

Top* / 1 (25.4) Sides & Bottom

SERVICE CLEARANCES Feet (meters)

Front 3 feet (0.9 meters)

Table 5

*Note: 3 in. (75 mm) above any horizontal/inclined vent component.

**Note: See Page 10, Step 1 for clearance requirements to the nailing ﬂange located at each side of the unit and any screw heads adjacent to it.

Models

MPDT-3328

MPDR-3328

MPD-3530 46-1/2 (1181) 48-1/4 (1226) 35-1/4 (895) 35-1/4 (895) MPD-4035

MPD-4540

Do not insulate the space between the

appliance and the

Shelf Above Fireplace With Rear Venting

Top Vent - With One 90 Degree Elbow Rear Vent - Straight Out The Back

Secure Vent Secure Flex Secure Vent Secure Flex

44-1/2 (1130) 46-1/4 (1175) 33-1/4 (845) 33-1/4 (845)

51-1/2 (1308) 53-1/4 (1353) 40-1/4 (1022) 40-1/4 (1022)

area above it.

Shelf Height

see table)

(

Combustible Shelf Height - Inches (millimeters)

Do not insulate the space between the

appliance and the

area above it.

Shelf Height

see table)

(

Shelf Above Fireplace With Top Venting

Figure 8:

Shelf Height Minimum Clearances

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

LENNOX HEARTH PRODUCTS • MERIT® PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS

12 (305) MANTEL

10 (254) MANTEL

8 (203) MANTEL

6 (152) MANTEL

4 (102) MANTEL

(102)

(356)

(305)

(254)

2 (51) MANTEL

TOP OF APPLIANCE

(152)

NOTE - Hood shown as positioned in louvered front model. The hood position in the flush faced front model is lower than shown.

(203)

MANTEL CLEARANCES

Inches (mm)

17"

14"

Min. Distance To Unprotected Perpendicular Side Wall

8-1/4"

45°

Combustible Materials Allowed In Shaded Area “Safe Zone”

12"

Top View Of

Fireplace

Side Wall

Min. Distance To Protected Perpendicular Side Wall

Wall Finishes / Surrounds / Mantels

Note: Combustible wall ﬁnish materials and/or surround materials must not be allowed to encroach the area deﬁned by the appliance front face (black sheet metal). Never allow combustible materials to be positioned in front of or overlapping the appliance face (see Figures 65 and 66 on Page 34 ).

Non-combustible materials, such as surrounds and other appliance trim, may be installed on the appliance face with these exceptions: they must not cover any portion of the removable glass panel or control compartment.

Vertical installation clearances to combustible mantels vary according to the depth of the mantel. See Figure 9. Mantels constructed of non-combustible materials may be installed at any height above the appliance opening; however, do not allow anything to hang below the ﬁreplace hood.

Figure 9: Minimum Mantel Clearances

Failure to position the parts in accordance with these diagrams or failure to use only parts speciﬁcally approved with this appliance may result in property damage or personal injury.

Risque de dommages ou de blessures si les pièces ne sont pas installées conformément à ces schémas et ou si des pièces autres que celles spéciﬁquement approuvées avec cet appareil sont utilisées.

WARNING

AVERTISSEMENT

Combustible materials may project beyond one side of the ﬁreplace opening as long as they are kept within the shaded areas illustrated here.

Figure 10: Minimum Distance to Side Wall

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

LENNOX HEARTH PRODUCTS • MERIT® PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS

PRE-INSTALLATION STEPS

The appliance is shipped with all gas controls and components installed and pre-wired.

Before installing the appliance, follow these steps:

1. Remove the shipping carton.

2. Remove the shipping pad, exposing the front glass door.

3. Open the two latches securing the glass door (under the ﬁrebox ﬂoor). Remove the door by tilting it outward at the bottom and lifting it up. Set the door aside, taking care to protect it from inadvertent damage. See Removing Glass Panels on Page 32.

4. See Figure 11. Remove the top louvered panel and locate the pressure relief plates. Lift the pressure relief plates, and remove the cardboard from beneath each plate (taking care not to damage the white gasket).

5. Remove the log set from the ﬁrebox. Handle

logs carefully to prevent breakage.

6. Remove the embers and volcanic stone from the control compartment.

Pressure Relief Plates

REMOVE

OAR

CAR

EFORE USING

Remove cardboard before using appliance.

Take care not to damage white gasket.

Figure 11

REMOVE

CAR

EFORE USING

OAR

TYPICAL INSTALLATION SEQUENCE

The typical sequence of installation is outlined below; however, each installation is unique and may result in variations to the steps described.

See the pages referenced in the following steps for detailed procedures.

Step 1. FRAMING (Page 10): Construct the appliance framing. Position the appliance within the framing and secure with nailing brackets.

IMPORTANT! Bend up the appropriate header spacing standoffs for the drywall/ﬁnish material thickness to be used (see Figure 60, page

32). Bend up the outer pair for 1/2" materials

and the inner pair for 5/8" materials. Bend out the appropriate nailing ﬂanges for

the drywall/ﬁnish material to be used. Nailing ﬂanges are provided for ﬂush framing, 1/2-inch and 5/8-inch framing depths (see Figure 12).

Step 2. ROUTING GAS LINE (Page 12): Route gas supply line to appliance location.

Step 3. PREPARING APPLIANCE VENT COLLAR

(MPD-3530/4035/4540 models with combined top/rear vent) (Page 13).

Step 4. INSTALLING VENT SYSTEM (Page 13): Install the vent system and exterior termination.

Step 5. FIELD WIRING (Page 25).

a. Millivolt Appliances – Install the operat-

ing control switch (not factory provided). If installing the optional forced air circulating blower, bring in electrical service line.

b. Electronic Appliances – Field wire and install operating control switch.

Step 6. WIRING - OPTIONAL FORCED AIR BLOWER KIT (Page 26).

Step 7. CONNECTING GAS LINE (Page 26):

Make connection to gas supply. Step 8. VERIFYING APPLIANCE OPERATION

(Page 27).

Step 9. INSTALL LOGS, VOLCANIC STONE, AND GLOWING EMBERS (Page 28).

Step 10. INSTALLING GLASS DOOR ASSEMBLY (Page 32).

Step 11. BURNER ADJUSTMENTS (Page 32):

Adjust burner to ensure proper ﬂame appearance.

Step 12. HOOD INSTALLATION (Page 34). Step 13. ATTACHING SAFETY-IN-OPERATION

WARNINGS (Page 35).

DETAILED INSTALLATION STEPS Step 1. FRAMING

Frame the appliance as illustrated in Figures 13 and 14 on Pages 10 and 11 (Figure 14

applies to corner framing installations only). All framing details must allow for a minimum clearance to combustible framing members as shown in Table 5 on Page 8.

If the appliance is to be elevated above ﬂoor level, a solid continuous platform must be constructed below the appliance.

Headers may be in direct contact with the appliance top standoff spacers when they are bent up vertically, maintaining the 3" clearance to the ﬁreplace top, but must not be supported by them or notched to ﬁt around them. All construction above the appliance must be self-supporting. DO NOT use the appliance

for structural support.

Secure the ﬁreplace to the side framing members using the unit’s nailing ﬂanges — one top and bottom on each side of the ﬁreplace front. See Figure 12. Use 8d nails or their equivalent.

IMPORTANT!

Bend up the appropriate header spacing top standoffs before installing the ﬁreplace.

Header Spacing Top Standoffs

(two pairs on front edge of firebox top)

Lift up outer pair for 1/2" finish materials.

Lift up inner pair for 5/8" finish materials.

Unit Nailing Flange

(No clearance to combustible framing is required.)

Side

Framing

Unit Secured to Framing

by Nailing Flange

Left Side Front Corner of Fireplace Shown

(Right side requirements are the same)

NOTE: The nailing ﬂanges, combustible members, and screw heads in areas directly adjacent to the nailing ﬂanges are EXEMPT from the 1/2" clearance to combustible requirements for the ﬁrebox outer wrapper.

Combustible framing may be in direct contact with the nailing ﬂanges and may be located closer than 1/2" from screw heads and the ﬁrebox wrapper in areas adjacent to the nailing ﬂanges.

Frame the opening to the exact dimensions speciﬁed in the framing details in this manual.

Figure 12

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

LENNOX HEARTH PRODUCTS • MERIT® PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS

.oNledoM A B C D E

8233-TDPM

.ni 4/133 4/133 ----- 4/373 8/721

mm 548 548 ----- 959 723

8233-RDPM

.ni 4/133 4/133 8/591 ----- 8/721

mm 548 548 894 ----- 723

0353-DPM

.ni 4/153 4/153 61/1112 4/393 61

mm 598 598 155 0101 604

5304-DPM

.ni 4/104 4/104 61/1162 4/344 61

mm 2201 2201 876 7311 604

0454-DPM

.ni 4/154 4/104 61/1162 4/344 61

mm 9411 2201 876 7311 604

FIREPLACE AND FRAMING SPECIFICATIONS

Framing

Notes

Diagrams, illustrations and photographs are not to scale. Consult installation instructions. Product designs, materials, dimensions, speciﬁcations, colors, and prices are subject to change or discontinuance without notice.

Vent Size

Coaxial DV Vent Size 4-1/2" Inner; 7-1/2" Outer

Efﬁciencies %

Fireplace

Model

MPDT-3328 62 45 64 49 MPDR-3328 61 53 64 55 MP

D-3530 MPD-4035 67 59 67 60 MP

D-4540

Natural Gas Propane

EnerGuide

AFUE

(P4)

62 53 60 55

67 59 67 59

AFUE

EnerGuide

(P4)

Viewable Glass Size

33" Model

35" Model

40" Model

45" Model

27-1/2" Wide

17" High

29-1/2" Wide 18-7/8" High

34-1/2" Wide

24" High

39-1/2" Wide

24" High

VENT FRAMING: TOP VENT WITH ONE 90° ELBOW

VENT FRAMING: REAR VENT WITH NO ELBOWS

10-1/2

(

)

267

5-1/8 (130)

5-1/8

(130)

(178)

Framing should be constructed of 2x4 or larger lumber.

1/2

Dimension “E” is the required framing depth when the finish material (drywall) thickness is 1/2 in. (13mm).

Vertical Venting through the Ceiling

Frame ceiling opening: Use a plumb line from the ceiling

above the appliance to locate center of the vertical run. Cut and/or frame an opening, 10-1/2" x 10-1/2" (267 mm x 267 mm) inside dimensions, about this center mark (see Figure 18).

12-1/8

(308)

12-1/8

(308)

Inches (mm)

Top View

(Louvered Front Model Shown)

Rear/Side

Framing Spacers

Header

Spacing

Top

Standoffs

Notes: [1] MPD models have a top and rear vent. MPDR models

have a rear vent only. MPDT models have a top vent only. [2] Collars protrude one inch on MPDT-3328 and MPDR-3328 models.

Concentric Flue: Flue

4-1/2" (114 mm); Combustion Air 7-1/2" (190 mm).

See Notes [1] and [2].

.oNledoM A B C D E F G H J K L M N

.ni 8/133 8/103 71 2/172 8/133 8/591 2/112 4/301 61/316 3 23/118 3/22 31

8233-TDPM

8233-RDPM

Figure 13

mm 148 567 234 996 148 894 645 372 371 67 212 07 033

.ni 8/153 8/123 91 2/192 8/153 61/1112 8/742 1 61/72 9 3 9 3 61

0353-DPM

mm 298 618 384 947 298 155 236 613 022 67 022 67 604

5304-DPM

.ni 8/104 8/173 42 2/143 8/104 61/1162 8/792 1 61/514 9 3 9 3 61 mm 9101 349 016 678 9101 876 957 973 022 67 022 67 604

0454-DPM

.ni 8/104 8/173 42 2/193 8/154 61/1162 8/743 61/771 9 3 9 3 61 mm 6411 349 016 3001 6411 876 688 344 022 67 022 67 604

Front View

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

3 (76)

in louvered front model.

Optional Electrical Inlet

Field-Provided Junction

NOTE: Eyebrow hood

shown as positioned

Gas Inlet (either

side and bottom)

Knockout requiring a

Box (either side)

1-3/8 (35)

6 (152)

Right Side View

1/2 (13)

See Note [2].

1-5/8 (42)

F (rear vent models only)

Electrical Inlet 2-3/4" x 2" (70 x 51 mm) Cover Plate with Knockout

LENNOX HEARTH PRODUCTS • MERIT® PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS

FIREPLACE FRAMING SPECIFICATIONS

.oNledoM A B C D E F

.ni 8/133 2/184 61/543 61/371 4/142 5

8233-TDPM 8233-RDPM

mm 148 2321 278 734 616 721

.ni 8/153 2/175 8/504 61/391 4/382 8/16

0353-DPM

mm 298 1641 2301 784 037 651

.ni 8/104 61/316 23/1134 61/391 61/1103 8/77

5304-DPM

mm 9101 4551 1011 784 977 002

.ni 8/154 8/366 61/5164 61/391 61/333 4/39

0454-DPM

mm 6411 6861 2911 784 348 842

Note:

• Rear Vent Applications in Corner Installations: The horizontal vent length

(from a to b) must not exceed 28 inches (711 mm).

• MPDT-3328 AND MPDR-3328 Models: Dimensions A through F occur when

one 45-degree elbow is connected directly to the appliance collar.

• MPD-3530, MPD-4035, and MPD-4540 Models: Dimensions D through F

occur when one 45-degree elbow is connected directly to the appliance collar.

Figure 14: Corner Framing with Horizontal Termination

Step 2. ROUTING GAS LINE

Route a 1/2" (13 mm) gas line to the left side of the appliance as shown in Figure 15. Gas lines must be routed, constructed and made of materials that are in strict accordance with local codes and regulations. All appliances are factory-equipped with a ﬂexible gas line connector and 1/2-inch shutoff valve. (See Step 6 on Page 25).

Left Side Front

Corner of Fireplace

Framing

Pipe Coupling

(Recommended)

6-1/2"

(152 mm)

(76 mm)

Also see Figure 13.

Figure 15: Route Gas Line

Proper Sizing of Gas Line

Properly size and route the gas supply line from the supply regulator to the area where the appliance is to be installed per requirements outlined in the National Fuel Gas Code, NFPA 54 - latest edition (USA) or CAN/CSA-B149.1

- latest edition (Canada).

MPD and MPDR units

MPD and MPDT units

Back wall of chase/enclosure (including any finishing materials)

Never use galvanized or plastic pipe. Refer to Table 6 for proper sizing of the gas supply line, if black iron pipe is being used. Gas lines must be routed, constructed and made of materials that are in strict accordance with local codes and regulations. We recommend that a qualiﬁed individual such as a plumber or gas ﬁtter be hired to correctly size and route the gas supply line to the appliance. Installing a gas supply line from the fuel supply to the appliance involves numerous considerations of materials, protection, sizing, locations, controls, pressure, sediment, and more. Certainly no one unfamiliar and unqualiﬁed should attempt sizing or installing gas piping.

Schedule 40

Black Iron Pipe

Inside Diameter (Inches)

Schedule 40 Pipe

Length (feet)

Natural

Gas

Propane

Gas

0-10 1/2 3/8

10-40 1/2 1/2

40-100 1/2 1/2 100-150 3/4 1/2 150-200 3/4 1/2

Table 6

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

7" (178 mm)

Notes:

• All appliances are factory-equipped with a ﬂexible gas line connector and 1/2 inch shutoff valve (see Figure 50 on Pagec 25).

• See Massachusetts Requirements on Page 4 for additional requirements for installations in the state of Massachusetts in the USA.

• The gas supply line should Not be connected to the appliance until Step 6 (Page 25).

• A pipe joint compound rated for gas should be used on the threaded joints. Ensure propane

resistant compounds are used in propane applications. Be very careful that the pipe

compound does not get inside the pipe.

• It is recommended to install a sediment trap in the supply line as close as possible to the appliance. Appliances using Propane should have a sediment trap at the base of the tank.

• Check with local building ofﬁcial for local code requirements (i.e. are below grade penetrations of the gas line allowed?, etc).

IMPORTANT: If propane is used, be aware that if tank size is too small (i.e. under 100-lbs, if this is the only gas appliance in the dwelling. Ref. NPFA 58), there may be loss of pressure, resulting in insufﬁcient fuel delivery (which can result in sooting, severe delayed ignition or other malfunctions). Any damage resulting from an improper installation, such as this, is not covered under the limited warranty.

LENNOX HEARTH PRODUCTS • MERIT® PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS

RESTRICTOR

APPLIANCE REAR

VENT OUTLET

A vent restrictor may be needed when

horzontally terminating the vent system from

the rear of the appliance (when using the

appliance rear vent), install vent restrictor in

the rear vent of the fireplace outlet on

MPD-3530/4035/4540 series models, in any

installation that has a vertical vent run in

excess of three feet (0.914 meters).

VENT RESTRICTOR INSTALLATION

(REAR VENT)

INNER FIREPLACE

COLLAR

If needed, install the restrictor orientated as

shown, either from inside or outside the unit,

in the inner fireplace collar.

Step 3. PREPARING APPLIANCE VENT COLLAR (MPD-3530/4035/4540 models

with combined top/rear vent)

Each of the unit’s two vent collars are sealed with a cover plate and a seal plate and gasket. The cover, and seal plate and gasket must be removed from the vent collar being used. Refer to Figure 16 for top vent usage and Figure 17 for rear, and the following steps to prepare the appropriate collar for use.

From the vent collar being used, remove the four screws securing the vent seal plate and gasket. Remove and discard the seal plate and gasket.

When the top vent collar is being used, from inside the ﬁrebox, loosen the two screws in the keyhole slots of the cover plate and remove the remaining two cover plate securing screws. Remove and discard the cover plate. Reinstall

and securely tighten all four screws. When the rear vent collar is being used, from

inside the ﬁrebox, remove the two screws securing the lintel to the rear wall of the ﬁrebox, then remove the lintel. Remove the four cover plate securing screws. Remove and discard the cover plate.

Reinstall and securely tighten all four cover plate screws. Re-secure the lintel to the rear wall of the ﬁrebox.

Use only approved vent components (see Approved Vent Components on Page 2).

These ﬁreplaces must be vented directly to the outside.

The vent system may not service multiple appliances, and must never be connected to a ﬂue serving a solid fuel burning appliance. The vent pipe is tested to be run inside an enclosed wall (such as a chase). There is no requirement for inspection openings in the enclosing wall at any of the joints in the vent pipe.

Installation of Vent Restrictor

A vent restrictor may be needed with this appliance, install vent restrictor (provided) in the appliance top ﬂue outlet as shown in Figure 18 (MPDT-3328, MPD-3530, MPD-4035 and MPD-

4540) or rear ﬂue outlet as shown in Figure 19 (MPD-3530, MPD-4035 and MPD-4540). It is held in place by friction, only.

Note: The vent restrictor is included in the ﬁrebox.

ON MPD-3530/4035/4540 SERIES MODELS

(COMBINED TOP AND REAR VENT UNITS)

TOP VENT SEAL & COVER PLATE REMOVAL

WHEN USING THE TOP VENT

(OUTSIDE UNIT)

CABINET TOP

GASKET

VENT SEAL PLATE

SECURING SCREWS

Select Venting System - Horizontal or Vertical

With the appliance secured in framing, determine vent routing and identify the exterior termination location. The following sections describe vertical (roof) and horizontal (exterior wall) vent applications. Refer to the section relating to your installation. A list of approved venting

components are shown on Pages 34 and 35.

VENT RESTRICTOR INSTALLATION

(TOP VENT)

A vent restrictor may be needed when

vertically terminating the vent system above

the roof (when using the appliance top vent),

install vent restrictor in the top vent of the

fireplace outlet on MPD-3530/4035/4540

and MPDT-3328 series models.

If needed, install the restrictor orientated as

shown, either from inside or outside the unit,

in the inner fireplace collar.

RESTRICTOR

INNER

FIREPLACE

COLLAR

APPLIANCE TOP

VENT OUTLET

Figure 18

WARNING

Failure to reinstall and securely tighten cover plate screws could result in leakage of ﬂue products into the living space. Vent cover plate and vent seal cap must remain securely in stalled on unused vent collar. Failure to do so could result in leakage of ﬂue products into living space.

Step 4. INSTALLING VENT SYSTEM

Ensure clearances are in accordance with local installation codes and the requirements of the gas supplier.

Dégagement conforme aux codes d'installation locaux et aux exigences du foumisseunde gaz.

TOP VENT

FIREBOX TOP

VENT

COVER PLATE

(INSIDE UNIT)

CROSS SECTION

COVER PLATE SECURING SCREWS

Figure 16

ON MPD-3530/4035/4540 SERIES MODELS

(COMBINED TOP AND REAR VENT UNITS)

REAR VENT SEAL & COVER PLATE REMOVAL

WHEN USING THE REAR VENT

COVER PLATE

SECURING SCREWS

LINTEL

SECURING

SCREWS

LINTEL

(INSIDE UNIT)

REAR VENT

CROSS SECTION

VENT SEAL PLATE

GASKET

SECURING SCREWS

CABINET BACK

(OUTSIDE UNIT)

Figure 17

Figure 19

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

+ 29 hidden pages