Lennox Hearth MPD-35 Series, MPD-45 Series Exterior Wall Thickness, Inches mm, Table F, Table G

Page 18

HORIZONTAL VENT FIGURES/TABLES

Note: Secure Vent components (rigid vent pipe and terminal) are shown in the figures; Secure Flex components (flexible vent pipe and terminal) may also be used.

Note: Two 45 degree elbows may be used in place of one 90 degree elbow. The same rise to run ratios, as shown in the venting figures for 90 elbows,must be followed if 45 degree elbows are used.

Note: It is very important that the horizontal/ inclined run be maintained in a straight (no dips) and recommended to be in a slightly elevated plane, in a direction away from the fireplace of 1/4" rise per foot (20 mm per meter) which is ideal, though rise per foot run ratios that are smaller are acceptable all the way down to at or near level.

Note: SV4.5VF (Secure Vent), SF4.5VF (Secure Flex) firestop/spacer must be used anytime vent pipe passes through a combustible floor or ceiling. SV4.5HF (Secure Vent), SF4.5HF (Se- cure Flex) firestop/spacer must be used anytime vent pipe passes through a combustible wall.

Note: 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 ).

WARNING: UNDER NO CIRCUMSTANCES MAY SEPA- RATE SECTIONS OF CONCENTRIC FLEXIBLE VENT PIPE BE JOINED TOGETHER.

H = 28 in. (711 mm) Maximum.

*When using Secure Flex,

H

use Firestop/Spacer

 

SF4.5HF

 

*Wall Firestop/Spacer

(SV4.5HF)

7 in. (178 mm)

TABLE 4

Venting Components Required for Various Exterior Wall

Thicknesses, When Using The Square Termination (SV4.5HT-2)

Venting Components Required

Exterior Wall Thickness

inches (mm)

 

 

 

Termination Kit Only

6 to 9-1/4

(152 to 235)

 

Termination Kit and 6 in. vent

10-3/4 to 14

section (SV4.5L6)

(273 to 356)

Termination Kit and12 in. vent

16-3/4 to 20

section (SV4.5L12)

(426 to 508)

 

 

Termination Kit and Telescopic

11-3/4 to 20

section (SV4.5LA) and 6 in. vent

(299 to 508)

section (SV4.5L6)

 

 

 

Note: See Figure 33 for wall thickness range reductions when using SV4.5HT-2.

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

Figure 34 - Rear Vent - NO ELBOWS -

Square Horizontal Termination (SV4.5HT-2)

 

TABLE F

 

Square termination

 

 

 

 

 

H Maximum

V Minimum

 

 

(SV4.5HT-2) shown.

feet

(meters)

feet

(meters)

 

 

3

(0.914)

Elbow Only

 

 

TABLE G

H Maximum

V Minimum

 

 

 

 

feet

(meters)

feet

(meters)

5

(1.524)

1

(0.305)

10

(3.048)

2

(0.610)

15

(4.572)

3

(0.914)

20

(6.096)

4

(1.219)

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

H = 20 ft. (6.096 m) 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.

H

V

 

H

*When using Secure Flex,

 

use Firestop/Spacer

V

SF4.5VF

 

*When using Secure Flex,

*Wall

use Firestop/Spacer

Firestop/Spacer

SF4.5HF

(SV4.5HF)

 

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

Figure 35 - Top Vent -

ONE 90 DEGREE ELBOW - ELBOW CONNECTION AT APPLIANCE

*When using Secure Flex,

*Wall Firestop/Spacer

(SV4.5HF)

use Firestop/Spacer

SF4.5HF

*Ceiling

 

 

Firestop/Spacer

Square termination

(SV4.5VF)

 

(SV4.5HT-2) shown.

 

Figure 36 - Top Vent - ONE 90 DEGREE ELBOW -

ELBOW CONNECTION NOT DIRECTLY AT APPLIANCE

18

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.

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Image 18
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Contents OTL Report No -F-13-4 MPD-3530CPE MPD4540CNE-BTable of Contents Input of millivolt models is shown in the following table Electronic ModelsAll Models Appliance and Vent Clearances Typical LocationsLocation Other heating/air conditioning ductingVertical Vent Termination Clearances Typical Installation SequenceVent Termination Clearances Roof Pitch FeetDetailed Installation Steps FramingRouting GAS Line = Clearance to service regulator vent outlet Feet 91cm Canadian Installation US InstallationMeter/regulator assembly Inches 30cm33 1/4 37 3/4 12 7/8 845 959 327 45 1/4 40 1/4 26 11/16 44 3/4Framing with Square Horizontal Termination SV4.5HT-2 Massachusetts Top ViewFront View Right Side View 33 1/8 30 1/8 27 1/2 19 5/8 21 1/2 10 3/4 13/16 11/32New York City, NY Installation of Vent RestrictorVent Restrictor Installation Rear Vent Select Venting System Horizontal or VerticalSV4.5FA or Vertical Straight InstallationVent Section Length Chart SV4.5SCVertical Offset Installation Vent / Appliance Collar Connection10-1/2 267 mm 305 mm Framing Dimensions for Roof Pitch12/12 10-1/2 17-3/4 267 mm 451 mmTable B Vertical Vent FIGURES/TABLESTable a FeetSV4.5HF Table DCeiling Firestop/Spacer Wall SV4.5VF CeilingFrame exterior wall opening Install firestop/spacer at ceilingPlan the vent run Support the vertical run sections See Section E onInside the inner until the termination seats Install the desired terminationFor the last step , from outside the exterior SV4.5RCHTable F Exterior Wall ThicknessInches mm Table GHorizontal Vent FIGURES/TABLES Table HH1H Table K Table LCeiling Pull and extend the inner flexible vent pipe Install the Outer Flex PipeInstall Firestop/Spacers at ceilings and walls Pull and extend the outer flexible vent pipeSIT and Honeywell Millivolt Wiring Field WiringWiring Optional Forced AIR Blower KIT Electronic Wiring See orConnecting GAS Line Propane applicationsUse an open flame to check for leaks Electronic Appliance Checkout Installing the Glass DoorSIT Gas Valve Honeywell Piezo Ignitor Checking Appliance OperationFinishing Requirements Burner Adjustments Flame Appearance and sootingHood Installation Wall DetailsInches mm Cold Climate InsulationMantel Clearances TOPCat.No Model No Description Installation AccessoriesCat.No. Model No. Description Support PlateCat Model Description Model DescriptionGAS Conversion Kits CanadaMillivolt Honeywell Systems KitsMillivolt SIT Systems Arrows shown in Figure Pilot for Honeywell Millivolt Gas ValveShown on the tab Orifice Strip Tab PositioningPilot Assembly Ignitor 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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