Lennox Hearth MPD-33 Series, MPD-45 Series Horizontal Vent FIGURES/TABLES, Table H, H1H

Page 19

HORIZONTAL VENT FIGURES/TABLES (continued)

H1H

TABLE H

H+H1 Maximum

H Maximum

V Minimum

feet (meters)

feet (meters)

feet (meters)

(1.524)

 

 

*When using Secure Flex, use Firestop/Spacer SF4.5HF

**When using Secure Flex, use Firestop/Spacer SF4.5VF

V

*Wall

Firestop/Spacer

(SV4.5HF)

**Ceiling Firestop/Spacer

(SV4.5VF)

5

 

2

(0.610)

1

(0.305)

10

(3.048)

4

(1.219)

2

(0.610)

15

(4.572)

6

(1.829)

3

(0.914)

20

(6.096)

8

(2.438)

4

(1.219)

 

V + H + H1 = 40 feet (12.2 m) Max.

 

 

H = 8 feet (2.438 meters) Max.

 

H + H1 = 20 feet (6.096 meters) Max.

Example: If 20 feet of (H) horizontal vent run is needed, then 4 feet minimum of (V) vertical vent will be required.

This table shows a 1 (V) to 5 (H) ratio. For every 1 foot of

(V)vertical, you are allowed 5 feet of (H) horizontal run, up to a maximum horizontal run of 20 feet.

See Table 4 on page 18 as an aid in venting component selection for a particular range of exterior wall thicknesses.

Figure 37 - Rear Vent - TWO 90 DEGREE ELBOWS

(Square termination SV4.5HT-2 shown.)

H1

*When using Secure Flex, use Firestop/Spacer SF4.5HF

**Note - When using Secure Flex, use Firestop/Spacer SF4.5VF

*Wall Firestop/Spacer

 

 

TABLE J

 

(SV4.5HF)

 

H + H1 Maximum

V Minimum

H

 

 

feet

(meters)

feet

(meters)

 

 

 

 

3

(0.914)

Elbow Only

 

V

5

(1.524)

1

(0.305)

 

10

(3.048)

2

(0.610)

 

 

 

 

15

(4.572)

3

(0.914)

*Wall Firestop/Spacer

 

20

(6.096)

4

(1.219)

(SV4.5HF)

 

V + H + H1 = 40 feet (12.2 m) Max.

**Ceiling

 

 

H + H1 = 20 ft. (6.096 m) Max.

 

 

 

 

 

Firestop/Spacer

 

 

 

 

 

(SV4.5VF)

 

 

 

 

 

Example: If 20 feet of (H) horizontal vent run is needed, then 4 feet minimum of (V) vertical vent will be required.

This table shows a 1 (V) to 5 (H) ratio. For every 1 foot of (V) vertical, you are allowed 5 feet of (H) horizontal run, up to a maximum horizontal run of 20 feet.

An elbow is acceptable as 1 foot of vertical rise except where an elbow is the only vertical component in the system. See Figure 35. See Table 4 on page 18 as an aid in venting component selection for a particular range of exterior wall thicknesses.

Figure 38 - Top Vent - TWO 90 DEGREE ELBOWS (Square termination SV4.5HT-2 shown.)

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.

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Contents MPD-3530CPE MPD4540CNE-B OTL Report No -F-13-4Table of Contents Electronic Models Input of millivolt models is shown in the following tableAll Models Other heating/air conditioning ducting Typical LocationsLocation Appliance and Vent ClearancesRoof Pitch Feet Typical Installation SequenceVent Termination Clearances Vertical Vent Termination ClearancesFraming Detailed Installation StepsRouting GAS Line Inches 30cm Canadian Installation US InstallationMeter/regulator assembly = Clearance to service regulator vent outlet Feet 91cm45 1/4 40 1/4 26 11/16 44 3/4 33 1/4 37 3/4 12 7/8 845 959 327Framing with Square Horizontal Termination SV4.5HT-2 33 1/8 30 1/8 27 1/2 19 5/8 21 1/2 10 3/4 13/16 11/32 Top ViewFront View Right Side View MassachusettsSelect Venting System Horizontal or Vertical Installation of Vent RestrictorVent Restrictor Installation Rear Vent New York City, NYSV4.5SC Vertical Straight InstallationVent Section Length Chart SV4.5FA orVent / Appliance Collar Connection Vertical Offset Installation10-1/2 17-3/4 267 mm 451 mm Framing Dimensions for Roof Pitch12/12 10-1/2 267 mm 305 mmFeet Vertical Vent FIGURES/TABLESTable a Table BCeiling Table DCeiling Firestop/Spacer Wall SV4.5VF SV4.5HFSupport the vertical run sections See Section E on Install firestop/spacer at ceilingPlan the vent run Frame exterior wall openingSV4.5RCH Install the desired terminationFor the last step , from outside the exterior Inside the inner until the termination seatsTable G Exterior Wall ThicknessInches mm Table FTable H Horizontal Vent FIGURES/TABLESH1H Table L Table KCeiling Pull and extend the outer flexible vent pipe Install the Outer Flex PipeInstall Firestop/Spacers at ceilings and walls Pull and extend the inner flexible vent pipeElectronic Wiring See or Field WiringWiring Optional Forced AIR Blower KIT SIT and Honeywell Millivolt WiringPropane applications Connecting GAS LineUse an open flame to check for leaks Checking Appliance Operation Installing the Glass DoorSIT Gas Valve Honeywell Piezo Ignitor Electronic Appliance CheckoutWall Details Burner Adjustments Flame Appearance and sootingHood Installation Finishing RequirementsTOP Cold Climate InsulationMantel Clearances Inches mmSupport Plate Installation AccessoriesCat.No. Model No. Description Cat.No Model No DescriptionModel Description Cat Model DescriptionCanada GAS Conversion KitsKits Millivolt Honeywell SystemsMillivolt SIT Systems Orifice Strip Tab Positioning Pilot for Honeywell Millivolt Gas ValveShown on the tab Arrows shown in FigureIgnitor Assembly Pilot AssemblyFlare Nut Clip

MPD-35 Series, MPD-45 Series, MPD-33 Series, MPD-40 Series specifications

The Lennox Hearth MPD-33, MPD-40, MPD-45, and MPD-35 Series are sophisticated and innovative products designed for both aesthetic appeal and functional heating efficiency. These multi-sided gas fireplaces are engineered to bring warmth and style to any space, making them a popular choice for homeowners looking to enhance their living environment.

One of the standout features of the MPD Series is their versatile design. Each model is available in different sizes with stylish options, catering to various room dimensions and decor styles. The MPD-33, MPD-40, and MPD-45 models provide flexibility in installation, while the MPD-35 offers extra depth for a more pronounced fire presence, making them suitable for both contemporary and traditional interiors.

A key characteristic of the Lennox Hearth MPD Series is its high-efficiency operation. These fireplaces are designed to maximize heat output while minimizing fuel consumption, resulting in lower energy bills. The innovative burner system produces a realistic flame effect that can be adjusted to create the perfect ambiance for any occasion. The use of advanced technology ensures that the heat generated is evenly distributed, enhancing overall comfort.

Safety is paramount in the design of the MPD Series. Each model is equipped with a state-of-the-art safety shut-off system that activates if the flame goes out, ensuring peace of mind for users. Additionally, the glass front not only provides a clear view of the flames but is designed to stay cool to the touch, making it safe for families with children and pets.

The efficiency of these models is further complemented by an optional remote control feature, allowing users to adjust the flame height and thermostat settings with ease. The MPD Series is also compatible with smart home systems, providing users with added convenience.

Overall, the Lennox Hearth MPD-33, MPD-40, MPD-45, and MPD-35 Series exemplify the perfect combination of efficiency, safety, and design. Their ability to blend function with visual appeal makes them an ideal choice for creating a cozy atmosphere in any room, from living areas to bedrooms. These fireplaces stand as a testament to Lennox's commitment to quality and innovation in home heating solutions. With advanced technologies and a focus on user comfort, the MPD Series is designed to meet the needs of modern homeowners seeking reliable and stylish heating options.
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