Lennox Hearth MPDR-3328CNE-B User Manual

LENNOX HEARTH PRODUCTS  •  MERIT

®

 PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45)  •  INSTALLATION INSTRUCTIONS

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

77L70

SV4.5L6

6 Inch (152 mm) 

77L71

SV4.5L12

12 Inch (305 mm) 

77L72

SV4.5L24

24 Inch (610 mm) 

77L73

SV4.5L36

36 Inch (914 mm) 

77L74

SV4.5L48

48 Inch (1219 mm) 

77L75

SV4.5LA

Telescopic Length Slip
Section (2" to 7-1/2" rigid)

77L76

SV4.5E45

45 Degree Elbow

77L77

SV4.5E90

90 Degree Elbow

10K81

SFMP

Mill-Pac, Black, High- 

Temperature Sealant

89L40

SFMP-12

Mill-Pac, Black, High-

Temperature Sealant, 

Bulk 12 pack

99L02

SV4.5HRK14 Horizontal Riser Kit, 14", 

99L03

SV4.5HRK36 Horizontal Riser Kit, 36", 

96K93

SV4.5SU

Support Strap

H5816

SV4.5-

TWSK10

Through Wall Shield Kit

(used to shield the 

direct-vent pipe from 

blown insulation)

The following flashings come packaged with a storm collar:

77L78

SV4.5F

Flat Roof Flashing

77L79

SV4.5FA

1/12 to 7/12 Adjustable 

Flashing

77L80

SV4.5FB

7/12 to 12/12 Adjustable 

Flashing

77L81

SV4.5SC6

Storm Collar (6 per box)

H6183

SV4.5HF5

Firestop Spacer, 5", rigid

H6184

SF4.5HF5

Firestop Spacer, 5", flex

H2246

SV4.5HF-10

Firestop / Spacer-Horizon-

tal, rigid (3-1-1 spacing), 

10 Pack

H2247

SV4.5VF-10

Firestop/Spacer-Vertical, 

rigid (1-1-1 spacing), 

10 Pack

96K92

SV4.5SP

Support Plate

H1968

SV4.5HT-2

Horizontal Square  

Termination with 
Firestop/ Spacer (H2246)  
and Adaptor (74L61)

H2152

SV4.5CGV-1

Vertical Termination Cap, 

High Wind

H4687

SV4.5CTS

Chase Top Termination, 

Square  

H4716

SV4.5CTS-B

Chase Top Termination, 

Square, Black  

H4717

SV4.5CTS-TC Chase Top Termination, 

Square, Terra Cotta  

94L10*

SV4.5HTSS

Horizontal Small Square 

Termination with 
Firestop/Spacer (96K80) 
and Adapter (74L61)

98L27*

SV4.5HTSSL

Horizontal Small Square-

Long Termination with 
Firestop/Spacer (96K80) 
and Adapter (74L61)

17M52

SV4.5HGS-1

Termination Guard, 

Square (1 pack)  

17M53

SV4.5HGS-12 Termination Guard, Hori-

zontal  Square  (12  pack)   

87L02

SV4.5HGS

Termination Guard for 

Horizontal Square Termi-

nation (Deluxe) (1 pack) 

H5820

SV4.5HTSK

Termination Shroud 

(Guard) for Horizontal 

Square Termination  

(1 pack)  

H3907

SV4.5ARSA

Attic Insulation Shield w/

adjustable height, 12"-22"

H1988

CTSA-33

Chase Top Shroud Kit, 

Arch Top  3 X 3 Ft.,  

H1985

CTSO-33

Chase Top Shroud Kit, 

Open Top  3 X 3 Ft.,  

H1987

CTSO-44

Chase Top Shroud Kit, 

Open Top  4 X 4 Ft.,  

H1986

CTSO-46

Chase Top Shroud Kit, 

Open Top  4 X 6 Ft.,  

Vent Sections

(Rigid)

*