Lennox Hearth MPD-45 Series 33 1/4 37 3/4 12 7/8 845 959 327, 45 1/4 40 1/4 26 11/16 44 3/4

Page 8

FIREPLACE FRAMING SPECIFICATIONS

FRAMING WITH SQUARE HORIZONTAL TERMINATION (SV4.5HT-2)

VENT FRAMING - TOP VENT WITH ONE 90° ELBOW

Framing should be constructed

of	2x4 or larger lumber.
10-1/2	Framing Dimensions
(267)	Framing Dimensions

VENT FRAMING - REAR VENT WITH NO ELBOWS

5-1/8

7

(178)

	Model No.		A	B	C	D	E
	MPDT-3328	in.	33 1/4	33 1/4	-----	37 3/4	12 7/8

		mm	845	845	-----	959	327
		mm	845	845	-----	959	327

BD

C

1/2 A

A

Inches (mm)

(130)12-1/8

(308)

7

(178)

5-1/8

(130)12-1/8

(308)

E

	MPDR-3328	in.	33 1/4	33 1/4	19 5/8	-----	12 7/8
	MPDR-3328	mm	845	845	498	-----	327
		mm	845	845	498	-----	327

	MPD-3530	in.	35 1/4	35 1/4	21 11/16	39 3/4	16

		mm	895	895	551	1010	406
		mm	895	895	551	1010	406

	MPD-4035	in.	40 1/4	40 1/4	26 11/16	44 3/4	16

		mm	1022	1022	678	1137	406
		mm	1022	1022	678	1137	406

	MPD-4540	in.	45 1/4	40 1/4	26 11/16	44 3/4	16

		mm	1149	1022	678	1137	406
		mm	1149	1022	678	1137	406

8

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

Figure 9

Note-

Venting requirements for rear vent applications in corner installations -

- the horizontal vent length “a” to “b,” must not exceed 28 inches (711 mm)

MPDT-3328 AND MPDR-3328 Models -

Dimensions A to F occur when one 45 degree elbow

is connected directly to the appliance collar.

MPD-3530, MPD-4035 and MPD-4540 Models -

Dimensions D and F occur when one 45 degree

elbow is connected directly to the appliance collar.

b

F

MPD and MPDR units

7 (178)

MPD and MPDT units

Inches

(millimeters)

C

E

D

Model No.

A

B

C

D

E

F

a

MPDT-3328

in.

33 1/8

48 1/2

34 5/16

17 3/16

241/4

5

MPDR-3328

mm

841

1232

872

437

616

127

MPD-3530

in.

35 1/8

57 1/2

40 5/8

19 3/16

28 3/4

6 1/8

mm

892

1461

1032

487

730

156

A

MPD-4035

in.

40 1/8

61 3/16

43 11/32

19 3/16

30 11/16

7 7/8

mm

1019

1554

1101

487

779

200

B

MPD-4540

in.

45 1/8

66 3/8

46 15/16

19 3/16

33 3/16

9 3/4

Back wall of chase/enclosure

mm

1146

1686

1192

487

843

248

(including any finishing materials)

Figure 10

Corner Framing with Square Termination (SV4.5HT-2)

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.

Image 8

Contents OTL Report No -F-13-4 MPD-3530CPE MPD4540CNE-BTable of Contents All Models Input of millivolt models is shown in the following tableElectronic Models Typical Locations LocationAppliance and Vent Clearances Other heating/air conditioning ductingTypical Installation Sequence Vent Termination ClearancesVertical Vent Termination Clearances Roof Pitch FeetRouting GAS Line Detailed Installation StepsFraming Canadian Installation US Installation Meter/regulator assembly= Clearance to service regulator vent outlet Feet 91cm Inches 30cmFraming with Square Horizontal Termination SV4.5HT-2 33 1/4 37 3/4 12 7/8 845 959 32745 1/4 40 1/4 26 11/16 44 3/4 Top View Front View Right Side ViewMassachusetts 33 1/8 30 1/8 27 1/2 19 5/8 21 1/2 10 3/4 13/16 11/32Installation of Vent Restrictor Vent Restrictor Installation Rear VentNew York City, NY Select Venting System Horizontal or VerticalVertical Straight Installation Vent Section Length ChartSV4.5FA or SV4.5SCVertical Offset Installation Vent / Appliance Collar ConnectionFraming Dimensions for Roof Pitch 12/1210-1/2 267 mm 305 mm 10-1/2 17-3/4 267 mm 451 mmVertical Vent FIGURES/TABLES Table aTable B FeetTable D Ceiling Firestop/Spacer Wall SV4.5VFSV4.5HF CeilingInstall firestop/spacer at ceiling Plan the vent runFrame exterior wall opening Support the vertical run sections See Section E onInstall the desired termination For the last step , from outside the exteriorInside the inner until the termination seats SV4.5RCHExterior Wall Thickness Inches mmTable F Table GH1H Horizontal Vent FIGURES/TABLESTable H Ceiling Table KTable L Install the Outer Flex Pipe Install Firestop/Spacers at ceilings and wallsPull and extend the inner flexible vent pipe Pull and extend the outer flexible vent pipeField Wiring Wiring Optional Forced AIR Blower KITSIT and Honeywell Millivolt Wiring Electronic Wiring See orUse an open flame to check for leaks Connecting GAS LinePropane applications Installing the Glass Door SIT Gas Valve Honeywell Piezo IgnitorElectronic Appliance Checkout Checking Appliance OperationBurner Adjustments Flame Appearance and sooting Hood InstallationFinishing Requirements Wall DetailsCold Climate Insulation Mantel ClearancesInches mm TOPInstallation Accessories Cat.No. Model No. DescriptionCat.No Model No Description Support PlateCat Model Description Model DescriptionGAS Conversion Kits CanadaMillivolt SIT Systems Millivolt Honeywell SystemsKits Pilot for Honeywell Millivolt Gas Valve Shown on the tabArrows shown in Figure Orifice Strip Tab PositioningFlare Nut Clip Pilot AssemblyIgnitor Assembly

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.