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ML296UHV Gas Furnace
The ML296UHV Category IV gas furnace is shipped ready
for installation in the upow 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 upow applications with bottom return air.
The ML296UHV 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 tak-
en from outdoors and ue gases are discharged outdoors.
In Non-Direct Vent installations, combustion air is taken
from indoors or ventilated attic or crawlspace and ue
gases are discharged outdoors. See gures 1 and 2 for
applications involving roof termination.
DIRECT VENT INSTALLATION NON-DIRECT VENT
INSTALLATION
EXHAUST
OUTLET
COMBUSTION
AIR INTAKE OUTSIDE
OF HOUSE
COMBUSTION
AIR INTAKE
INSIDE
OF HOUSE
EXHAUST OUTLET
FIGURE 1
NON-DIRECT VENT
INSTALLATION
NON-DIRECT VENT
INSTALLATION
COMBUSTION
AIR INTAKE INSIDE
VENTILATED
CRAWL SPACE
COMBUSTION
AIR INTAKE INSIDE
VENTILATED
ATTIC SPACE
EXHAUST
OUTLET
EXHAUST
OUTLET
FIGURE 2
Shipping and Packing List
Package 1 of 1 contains
1 - Assembled ML296UHV 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 nd any
damage, immediately contact the last carrier.
The following items may also be ordered separately:
1 - Thermostat
1 - LP/Propane changeover kit
1 - Return air base kit
1 - Horizontal suspension kit
1 - High altitude pressure switch
Safety Information
CAUTION
As with any mechanical equipment, contact with sharp
sheet metal edges can result in personal injury. Take
care while handling this equipment and wear gloves and
protective clothing.
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 oor and may be
dicult 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.
ML296UHV units are CSA International certied 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). The National Fuel
Gas Code is available from the following address:
American National Standards Institute, Inc.
11 West 42nd Street
New York, NY 10036
In Canada, installation must conform with current National
Standard of Canada CSA-B149 Natural Gas and Propane
Installation Codes, local plumbing or waste water codes
and other applicable local codes.
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