Shipping And Packing List; Safety Information - Lennox G51MP SERIES Installation Instructions Manual

G51MP Gas Furnace
The G51MP Category IV gas furnace is shipped ready for
installation in the upflow, downflow, horizontal left air dis-
charge or horizontal right air discharge position. The fur-
nace is shipped with the bottom panel in place. The bot-
tom panel must be removed if the unit is to be installed in
upflow applications with bottom return air. The bottom
panel must also be removed and discarded in all downflow
or horizontal applications.
The furnace is equipped for installation in natural gas ap-
plications. A conversion kit (ordered separately) is re-
quired for use in propane/LP gas applications.
The G51MP can be installed as either a Direct Vent or a
Non−Direct Vent gas central furnace.
NOTE − In Direct Vent installations, combustion air is taken
from outdoors and flue gases are discharged outdoors. In
Non−Direct Vent installations, combustion air is taken from
indoors and flue gases are discharged outdoors. See figure
2 for applications involving roof termination.
DIRECT VENT INSTALLATION
COMBUSTION
EXHAUST
AIR INTAKE
OUTLET
OUTSIDE OF
HOUSE
G51MP
CONDENSATE
DRAIN
FIGURE 2

Shipping and Packing List

Package 1 of 1 contains
1 − Assembled G51MP unit
1 − Bag assembly containing the following:
3 − Screws
3 − Wire nuts
1 − Snap bushing
1 − Snap plug
1 − Wire tie
1 − Condensate trap
1 − Condensate trap cap
2 − 2" diameter vent / intake plugs
1 − 3" diameter cabinet plug (intake)
1 − 2" diameter debris screen
NON−DIRECT VENT
INSTALLATION
EXHAUST
OUTLET
COMBUSTION
AIR INTAKE INSIDE
OF HOUSE
G51MP
CONDENSATE
DRAIN
Page 4
NOTE − G51MP−48C−110 and G51MP−60C−110 units also
include a 2" diameter PVC street elbow, which is shipped
on the blower deck in the heating compartment.
G51MP−60D−135 units are shipped with a 3" to 2" PVC re-
ducing elbow.
Canadian Installations Only − Replace the provided 2"
street elbow shipped with the G51MP−48C−110 and
G51MP−60C−110 units with 2" street elbow Y0162. Re-
place the provided 3" X 2" reducing elbow shipped with the
G51MP−60D−135 units with 3" X 2" reducing elbow 40W22.
Y0162 and 40W22 meet B149 vent requirements.
Check equipment for shipping damage. If you find any
damage, immediately contact the last carrier.
The following items may also be ordered separately:
1 − Thermostat
1 − Propane/LP changeover kit
DANGER
Danger of explosion.
There are circumstances in which odorant used with
LP/propane gas can lose its scent. In case of a leak,
LP/propane gas will settle close to the floor and may
be difficult to smell. An LP/propane leak detector
should be installed in all LP applications.

Safety Information

WARNING
Improper installation, adjustment, alteration, service
or maintenance can cause property damage, person-
al injury or loss of life. Installation and service must
be performed by a licensed professional installer (or
equivalent), service agency or the gas supplier.
CAUTION
As with any mechanical equipment, personal injury
can result from contact with sharp sheet metal
edges. Be careful when you handle this equipment.
Use only the type of gas approved for use with this furnace.
Refer to unit nameplate.
G51MP units are CSA International certified to ANSI
Z21.47 and CSA 2.3 standards.
In the USA, installation of gas furnaces must conform with lo-
cal building codes. In the absence of local codes, units must
be installed according to the current National Fuel Gas Code
(ANSI-Z223.1/NFPA 54). The National Fuel Gas Code is
available from the following address:
American National Standards Institute, Inc.
11 West 42nd Street
New York, NY 10036