Ml193Uhegas Furnace; Shipping And Packing List; Safety - Lennox ML193UH030XE36B Installation Instructions Manual

ML193UHE Gas Furnace
The ML193UHE Category IV gas furnace is shipped ready
for installation in the upflow or horizontal 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 horizontal or upflow applications with bottom return air.
The ML193UHE can be installed as either a Direct Vent
or a Non-Direct Vent gas central furnace.
The furnace is equipped for installation in natural gas
applications. A conversion kit (ordered separately) is re-
quired for use in propane/LP gas applications.
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 or ventilated attic or crawlspace and flue gases
are discharged outdoors. See FIGURE 1 and FIGURE 2
for applications involving roof termination.
DIRECT VENT INSTALLATION
EXHAUST OUTLET
COMBUSTION
AIR INTAKE OUTSIDE
OF HOUSE
FIGURE 1
NON-DIRECT VENT
INSTALLATION
EXHAUST
OUTLET
COMBUSTION
AIR INTAKE INSIDE
VENTILATED
ATTIC SPACE
FIGURE 2
NON-DIRECT VENT
INSTALLATION
EXHAUST
OUTLET
COMBUSTION
AIR INTAKE
INSIDE
OF HOUSE
NON-DIRECT VENT
INSTALLATION
EXHAUST
OUTLET
COMBUSTION
AIR INTAKE INSIDE
VENTILATED
CRAWL SPACE
Page 3

Shipping and Packing List

Package 1 of 1 contains
1 - Assembled ML193UHE unit
1 - Bag assembly containing the following:
1 - Snap bushing
1 - Snap plug
1 - Wire tie
1 - Condensate trap
1 - Condensate trap cap
1 - Condensate trap clamp
1 - 2" diameter debris screen
1 - 3/4" Threaded street elbow
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
1 - Return air base kit
1 - Horizontal suspension kit
Safety Information
WARNING
Improper installation, adjustment, alteration, service
or maintenance can cause property damage, personal
injury or loss of life. Installation and service must be
performed by a licensed professional HVAC installer (or
equivalent), service agency, or the gas supplier.
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.
Use only the type of gas approved for use with this fur-
nace.
Refer to unit nameplate.
ML193UHE units are CSA International certified to ANSI
Z21.47 and CSA 2.3 standards.
Building Codes
In the USA, installation of gas furnaces must conform with
local 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).