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I-SCE (09-18) PN207697R9
DANGER: A danger statement describes a potentially hazardous situation that if not avoided, will result in severe
personal injury or death and/or property damage.
WARNING: A warning statement describes a potentially hazardous situation that if not avoided, can result in severe
personal injury and/or property damage.
CAUTION: A caution statement describes a potentially hazardous situation that if not avoided, can result in minor
or moderate personal injury and/or property damage.
NOTE: A note provides important information that should not be ignored.
GENERAL INFORMATION
NOTE: Model SCE units are not certified for residential use.
The instructions in this manual apply to the model SCE blower-type unit heater with blower cabinet (see Figure 1).
Installation should be performed by a qualified agency in accordance with the instructions in this manual and in
compliance with all codes and requirements of authorities having jurisdiction.
Model SCE is design-certified by the Canadian Standards Association to ANSI Standards and is available for use with
either natural or propane gas. The type of gas, the rate, and the electrical characteristics are on the unit rating plate.
This separated-combustion unit is designed and manufactured in accordance with the ANSI definition of separated
combustion, which reads, “Separated Combustion System Appliance: A system consisting of an appliance and
a vent cap(s) supplied by the manufacturer, and (1) combustion air connections between the appliance and the
outside atmosphere, and (2) flue gas connections between the appliance and vent cap, of a type(s) specified by the
manufacturer but supplied by the installer, constructed so that, when installed in accordance with the manufacturer’s
instructions, air for combustion is obtained from the outside atmosphere and flue gases are discharged to the outside
atmosphere.”
Separated-combustion units are designed to separate air for combustion and flue products from the environment of
the building in which the unit is installed. Separated-combustion appliances are recommended for use in dust-laden
and some corrosive-fume environments or in buildings with negative pressure (up to 0.15 IN WC). As the definition
states, all separated-combustion, power-vented equipment must be equipped with both combustion-air and exhaust
piping to the outdoors.
INSTALLATION CODES
These units must be installed in accordance with local building codes. In the absence of local codes, in the United
States, the unit must be installed in accordance with the National Fuel Gas Code NFPA 54/ANSI Z223.1 (latest
edition). The code is available from CSA Information Services, 1-800-463-6727. Local authorities having jurisdiction
should be consulted before installation is made to verify local codes and installation procedure requirements.
These gas-fired products are certified by ANSI Z83 family of standards governing the safe usage of heating equipment
in the industrial/commercial marketplace. This includes using the heaters in makeup air applications to supply corridor
pressurization in commercial buildings such as office structures and apartment complexes.
The heaters are not certified as residential heating equipment and should not be used as such.
Clearances from the heater and vent to combustible construction or material in storage must conform with the National
Fuel Gas Code ANSI Z223.1 (latest edition) pertaining to gas-burning devices, and such material must not attain a
temperature over 160°F (71°C) by continued operation of the heater.
Figure 1. Model SCE Unit Heater
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