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ML195UH Gas Furnace
The ML195UH 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 ML195UH 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 ap-
plications. 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 and flue gases are discharged outdoors. See figure
2 for applications involving roof termination.
FIGURE 2
DIRECT VENT INSTALLATION NON−DIRECT VENT
INSTALLATION
EXHAUST
OUTLET
ML195UH
COMBUSTION
AIR INTAKE INSIDE
OF HOUSE
EXHAUST
OUTLET
COMBUSTION
AIR INTAKE
OUTSIDE OF
HOUSE
ML195UH
Shipping and Packing List
Package 1 of 1 contains
1 − Assembled ML195UH 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
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 in-
staller (or equivalent), service agency or the gas sup-
plier.
CAUTION
As with any mechanical equipment, personal injury
can result from contact with sharp sheet metal
edges. Be careful when you handle this equipment.
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 furnace.
Refer to unit nameplate.
ML195UH 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 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
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.
In order to ensure proper unit operation in non−direct vent
applications, combustion and ventilation air supply must be
provided according to the current National Fuel Gas Code
or CSA-B149 standard.
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