Lennox International Inc. MERIT PLUS MPB3530CNM-B - Manual (Page 9)

9
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
LENNOX HEARTH PRODUCTS • MERIT PLUS ® B-VENT GAS FIREPLACES (MPB33/35/40/45) • INSTALLATION INSTRUCTIONS
. o N l e d o M A B C D E F G
. n i 5 3 8 / 1 - 8 / 1 - 2 3 9 1 2 / 1 - 9 2 5 3 8 / 1 - 8 / - 6 1 / 7 - 2 5 8-3/4
13
330
406
16
406
16
406
16
m m 2 9 8 6 1 8 3 8 4 9 4 7 2 9 8 2 3 6 6 1 3 7 2 1 222
. n i 8 / 1 - 0 4 8 / 1 - 7 3 4 2 2 / 1 - 4 3 8 / 1 - 0 4 8 / 7 - 9 2 1 6 1 / 5 1 - 4 5 8-3/4
m m 9 1 0 1 3 4 9 0 1 6 6 7 8 9 1 0 1 9 5 7 9 7 3 7 2 1 22 2
. n i 8 / 1 - 0 4 8 / 1 - 7 3 4 2 2 / 1 - 9 3 8 / 1 - 5 4 8 / 7 - 4 3 6 1 / 7 - 7 1 6 8-3/4
m m 6 4 1 1 3 4 9 0 1 6 3 0 0 1 6 4 1 1 6 8 8 3 4 4 2 5 1 222
MPB33
MPB35
MPB40
MPB45
in.
mm
33-1/8
841 432 765 841 699
21-1/2 33-1/8 4
546 102 273
27-1/2 17 30-1/8
24-7/8
621
12-7/16
10-3/4
J K H
6-1/2
165
Schedule 40 Pipe
Length (feet)
Natural
Gas
Propane
Gas
0–10 1/2 in. 3/8 in.
10–40 1/2 in. 1/2 in.
40–100 1/2 in. 1/2 in.
100–150 3/4 in. 1/2 in.
150–200 3/4 in. 1/2 in.
Table 6: Schedule 40 Black Iron Pipe—
Inside Diameter
PROPER SIZING OF GAS LINE
Properly size and route the gas supply
line from the supply regulator to the area
where the appliance is to be installed per
requirements outlined in the National Fuel
Gas Code, ANSI Z223.1 (NFPA 54)—latest
edition (USA) or CAN/CGA-B149.1—latest
edition (Canada). STEP 2. ROUTING GAS LINE
Route a 1/2" (13 mm) gas line as shown
in Figure 11. Gas lines must be routed,
constructed and made of materials that are
in strict accordance with local codes and
regulations. The appliance, as set up at the
factory, is best suited for use with a gas line
routed from the left side. The gas line may
however be alternately routed from the right
side. All appliances are factory-equipped
with a fl exible gas line connector and 1/2 inch
shutoff valve. (See Step 6 on Page 12).
Never use galvanized or plastic pipe. Refer to
Table 6 for proper sizing of the gas supply
line, if black iron pipe is being used. Gas lines
must be routed, constructed and made of
materials that are in strict accordance with
local codes and regulations. We recommend
that a qualifi ed individual such as a plumber
or gas fi tter be hired to correctly size and
route the gas supply line to the appliance.
Installing a gas supply line from the fuel
supply to the appliance involves numerous
considerations of materials, protection,
sizing, locations, controls, pressure,
sediment, and more. Certainly no one
unfamiliar and unqualifi ed should attempt
sizing or installing gas piping.
Notes:
• All appliances are factory-equipped with
a fl exible gas line connector and 1/2 inch
shutoff valve (see Figure 46 on Page 25).
Also see Figure 12.
Figure 11: Route Gas Line
3"
(76 mm)
6-1/2"
(152 mm)
Pipe Coupling
(Recommended)
• See Massachusetts Requirements on
Page 4 for additional requirements for
installations in the state of Massachusetts
in the USA.
• The gas supply line SHOULD NOT be
connected to the appliance until Step 6 on
Page 12).
• A pipe joint compound rated for gas
should be used on the threaded joints.
Ensure propane resistant compounds are
used in propane applications. Be very
careful that the pipe compound does not
get inside the pipe.
• It is recommended to install a sediment
trap in the supply line as close as possible
to the appliance.
• Check with local building offi cial for local
code requirements.
F
E
B
D
C
G
T op View
FRAMING
STANDOFFS
(Top, Sides,
and Rear)
Front View
3 (76)
A
J
H
Flue Outlet For B-V ent Connection
OPTIONAL ELECTRICAL
INLET KNOCKOU T
REQUIRING A FIELD
PROVIDED JUNCTION
BOX (Either Side)
GAS INLET
(Either Side
and bottom )
NOTE - Hood shown
as positioned
in louvered
front model.
ELECTRICAL INLET
2-3/4 x 2 (70 x 51) COVER
PLA TE with KNOCKOUT)
K
1/2 (13)
3 (76)
1 ³⁄ ₈
(35)
(140)
5-1/2
9-3/8
(238)
2
(53)
Right Side View
(140)
5-1/2
9-3/8
(238)
1-3/8
(35)
Left Side View
GAS INLET
(See Also
Right Side View
)
ELECTRICAL INLET
(See Also
Right Side View )
3
(76)
OUTSIDE AIR
SHUTTER
8-15/16
(227)
7-3/8
(187) ELECTRICAL
INLET
(Optional)
Figure 10: Fireplace Specifi cations