Lennox MERIT PLUS SERIES User manual

SPECIFICATIONS
Natural Gas BTU Input 30,000
Propane Gas BTU Input 28,000
Co-axial DV Vent Size 4-1/2" Inner
7-1/2" Outer
EFFICIENCIES
61 % Natural Gas
62 % Propane Gas
• AFUE 65 % Natural Gas
67 % Propane Gas
NOTES
• Annual Fuel Utilization Efficiency
Due to Lennox' ongoing commitment to quality,
all specifications, ratings and dimensions are
subject to change without notice.
Appliance has a factory-installed vent seal cap in
each flue outlet. (see Installation Manual)
22
(559)
35-1/8
(892)
32-5/8
(827)
19
(483)
29 1/2
(749)
39-3/4 (984) 3 (76)
38-3/8 (899) 11 (279)
6-1/4
(159)
25-1/2
(646)
3-1/8 (79)
Louvered Control
Compartment Door Gas
Inlet
Provide additional
space for Side
Vent Seal Cap if
installing against a
solid wall.
Front View
Left Side View Right Side View
Control Switch Wires
Knock-Out
Junction Box
Knock-Out
10-7/8 (264)
11 (279)
(16)
5/8
Framing Spacers
(top and both sides)
Stepped to Accept Drywall
Vent Seal Cap
Top View
***This dimension does
not include the addition
of drywall to the inside
of framing or clearance
for the Side Vent Seal Cap.
Adjust accordingly for your
installation.
Seealso,SideVentSealCap
note below.
5-5/8
(143)
***38-3/4
(984)
35-1/4
(895)
**20-3/4
(527)
10-1/2
(267)
12-1/8
(308) 5-1/8
(130)
12-1/8
(308)
25-1/2
(648)
5-1/8
(130)
Vent Center - Top Vent
with one 90 degree
elbow
Vent Center - Side Vent
with no elbows
**This dimension
based on 5/8" drywall.
For 1/2" drywall use
21" (533 mm). The
finished dimension
should be 22" (558
mm)
• Inches (millimeters)
• Minimum Framing Stud Size is 2 x 4
• See side views of fireplace below for
gas line inlet location options.
Fireplace Framing Specifications
Center of gas line
is 3-1/8 inches
(79 mm) up from
floor.
Notes:
Framing Dimensions for Roof
Inches (millimeters)
Pitch C D
0/12 10-1/2 in.
(267 mm)
10-1/2 in.
(267 mm)
6/12 10-1/2 in.
(267 mm)
12 in.
(305 mm)
12/12 10-1/2 in.
(267 mm)
17-3/4 in.
(451 mm)
C
D
Appliance Specifications
MPD35PF
Page 1 of 2
P/N 506035-04 REV. A 07/2008
MPD35PF-NM MPD35PF-NE
MPD35PF-PM
Millivolt Models Electronic Models
See Ceiling Framing
on Page 2
PRODUCT REFERENCE INFORMATION
Cat.
No.
Model Ship
Weight
Ship.
Volumn
H6945 MPD35PF-NM 220 lbs 46W x 26D x
43H (30 cu.ft.)
H6946 MPD35PF-PM 220 lbs 46W x 26D x
43H (30 cu.ft.)
H6947 MPD35PF-NE 220 lbs 46W x 26D x
43H (30 cu.ft.)
Secure Vent
42-5/8 (1083)
Secure Flex
44-3/8 (1127)

Typical
Installation
1
(25)
2
(51)
3
(76)
1 (25)
2 (51)
3 (76)
4
(102)
4 (102)
5
(127)
5 (127)
6 (152)
7 (178)
8 (203)
9 (229)
10 (250)
Minimum Appliance and Vent
Clearances - Inches (millimeters)
Sides 1/2 (13)
Top Spacers 0 (0)
Floor 0 (0)
Bottom of Appliance
To Ceiling 72 (1829)
Vent 3 (76) Top *
1 (25.4) Sides & Bottom
SERVICE CLEARANCES Feet (meters)
Front & Back Faces 3 ft. (0.9 m)
*Note: 3 in. (75 mm) above any horizontal /
inclined vent component.
Minimum Side Clearances
Combustible Materials
Allowed In Shaded Area
“Safe Zone”
Inches (millimeters)
inches (millimeters)
Minimum Shelf Height Clearances
Shelf Height
(see table)
Shelf Above Fireplace With Side Venting
Shelf Height
(see table)
Shelf Above Fireplace With Top Venting
3 (76)
2
(51)
4
(102)
6
(152)
8
(203)
10
(254)
12
(305)
5 (127)
9 (289)
13 (330)
11 (279)
7 (178)
Mantel Depth
Top of
Appliance
Front or Rear Face
of Appliance
Minimum Mantel Clearances
Model No. Shelf Height - Inches (millimeter)
Side Vent - Straight Out Back Top Vent - with One 90 Degree Elbow
Secure Vent & Secure Flex Secure Vent Secure Flex
MPD35PF 35-1/4 (895) 49-3/8 (1254) 51-1/8 (1299)
Top View of
Fireplace
45o
At 5" minimum side
wall clearance, the wall
(shown in dark gray) can
be any length.
Minimum Distance
to Unprotected
Side Wall
Hearth Extension - A hearth
extension is not required
with this appliance.
Appliance Clearances
MPD35PF
DIRECT VENT PENINSULA
MERIT®PLUS SERIES
MPD35PF-NM MPD35PF-NE
MPD35PF-PM
Millivolt Models Electronic Models
Page 2 of 2
Printed in U.S.A. © 2005 by LENNOX HEARTH PRODUCTS
P/N 506035-04 REV. A 07/2008
10-1/2”
(267mm)
7"
(178)
5-1/8”
(130 mm)
12-1/8”
(308 mm)
3"
(76 mm)
1"
(25.4 mm)
Adapter SV4.5RCH
Square Horizontal Termination (SV4.5HT)
6 to 48 inch Vent Section,
Telescopic vent section,
Elbow or Appliance Collar
SeePage 1 for Min.
Distance to Base of Appliance.
Base ofAppliance
Note: Center line of Vent Piping is NOT
the Same as the Center line of the
Framed Opening.
Firestop / spacer (SV4.5HF) shown on the exterior side
of the wall. It may also be installed on the interior side.
* Ceiling Firestop /
Spacer (SV4.5VF)
Vertical Termination Cap
SV4.5CGV-1 (rated for
high winds and freezing
conditions)
Specifications and clearances are subject to change without notice. Refer to Installation Manual
before installation of these appliances for updated dimensions and instructions.
See Roof Fram-
ing on Page 1
Ceiling Framing
(See Roof Framing on Page 1)
10 1/2 in.
(267 mm)
10 1/2 in.
(267 mm)