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

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5 (1)
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.
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
US
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.
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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
3
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
N
O
T
O
it
L
I
P
O
F
F
OUT
IN
Manifold Pressure Tap
Inlet Pressure Tap
Pilot Adjustment
I
P
W
O
L
H
I
HI/LO Variable Flame Height Adjustment
Screw
T
O
L
HTPTHTPT
Figure 1: SIT Millivolt Gas Valve
Electronic
Gas Control
Valve
P SI
Inlet
Pressure
Port
IN
ON/OFF Switch Manifold Pressure Port
R E
IT
IGN
ON
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.
4
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
APPLICATION
TOP VENT
INSTALLATION
VERTICAL VENT (Rear Vent Application)
HORIZONTAL VENT (Rear Vent Application with a chase)
RECESSED
REAR VENT
APPLICATION
TOP VENT
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.
5
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
H*
1 inch (25.4 mm) Minimum Clearance to Combustibles
Vertical Wall
X
12
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
A
bove Flat Or Sloped Roofs ef. NFPA 54 / ANSI Z223.1
R
oof Pitch *H (ft) *H (m)
R
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)
6"
(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.
6
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
B
V
L
V
6”
Detail D
F
V
A
X
Ventilated Soffit
V
Fixed
Closed
Window
V
C
= Air Supply Inlet
C
C
C
V
Inside
Corner Detail
V
A
B
Operable
V
Window
B
B
= Vent Termination
G
B
= 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.
A
= 12” in Canada
3 ft.
X
A
J
A
3 ft.
P
N
V
Q
H
M
V
I
N
O
D
E
V
Figure 7
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
7
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.
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.
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
8
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
4
(102)
14
(356)
12
(305)
10
(254)
2 (51) MANTEL
TOP OF APPLIANCE
6
(152)
NOTE - Hood shown as positioned in louvered front model. The hood position in the flush faced front model is lower than shown.
8
(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"
5"
Top View Of
Fireplace
Side Wall
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
9
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
D
OAR
B
D
CAR
EFORE USING
B
Remove cardboard before using appliance.
Take care not to damage white gasket.
Figure 11
REMOVE
B
D
CAR
EFORE USING
B
D
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.
10
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
B
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
D
(130)
(178)
(178)
7
7
Framing should be constructed of 2x4 or larger lumber.
C
E
A
1/2
A
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.
G
H
Concentric Flue: Flue
4-1/2" (114 mm); Combustion Air 7-1/2" (190 mm).
See Notes [1] and [2].
J
.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
E
A
D
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
3 (76)
in louvered front model.
Optional Electrical Inlet
C
B
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)
K
6 (152)
Right Side View
N
L
1/2 (13)
See Note [2].
1-5/8 (42)
M
F (rear vent models only)
Electrical Inlet 2-3/4" x 2" (70 x 51 mm) Cover Plate with Knockout
11
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)
3"
(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).
12
MPD and MPDR units
MPD and MPDT units
C
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.
b
F
7" (178 mm)
E
D
a
A
B
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
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.
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.
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