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I-SCE (09-18) PN207697R9
CLEARANCES
Clearance to combustibles is defined as the minimum distance—from the heater to a surface or object—that is
necessary to ensure that a surface temperature of 90°F (50°C) above the surrounding ambient temperature is not
exceeded. For safety and convenience, ensure that the clearances listed in Table 3 are provide as shown in the
following table. Minimum clearances are also listed on the heater rating plate.
Table 3. Clearances
Unit Surface Minimum Clearances (Inches (mm))
Top 6 (152)
Control side 6 (152) + width of unit
Side opposite controls 6 (152)
Bottom, to combustibles 6 (152)
Bottom, to noncombustibles 0 (0)
LOCATION
⚠ CAUTION ⚠
Do not locate the heater where it may be exposed to water spray, rain, or dripping water.
For best results, the heater should be placed with certain rules in mind. In general, a unit should be located from
8 to 12 feet (2.6 to 3.6 M) above the floor. Units should always be arranged to blow toward or along exposed wall
surfaces, if possible. Where two or more units are installed in the same room, a general scheme of air circulation
should be maintained.
Suspended heaters are most effective when located as close to the working zone as possible, and this fact should
be kept in mind when determining the mounting heights to be used. However, avoid directing the discharged air
directly on the room occupants.
Partitions, columns, counters, or other obstructions should be taken into consideration when locating the unit heater,
so that a minimum quantity of airflow will be deflected by such obstacles. When units are located in the center of the
space to be heated, the air should be discharged toward the exposed walls. In large areas, units should be located
to discharge air along exposed walls with extra units provided to discharge air in toward the center of the area.
At those points where infiltration of cold air is excessive, such as at entrance doors and shipping doors, it is desirable
to locate the unit so that it will discharge directly toward the source of cold air from a distance of 15 to 20 feet (4.5
to 6 M).
WEIGHTS
Before installation, check the supporting structure to ensure that it has sufficient load-carrying capacity to support
the weight of the unit. Refer to Table 4, which lists unit weight based on unit size.
Table 4. Unit Weight
Net Weight
Model
125 150 and 175 200 and 225 250 and 300 350 400
Pounds (kg) 313 (142) 358 (162) 382 (173) 482 (219) 498 (226) 560 (254)
SUSPENSION
⚠ WARNING ⚠
Units must be level for proper operation. Do not place additional weight on or add additional weight
to the suspended unit.
Model SCE has four-point suspension (see hanger center line dimensions shown in Figure 2). At each suspension
point, the unit is factory-equipped with a free-turning, female, 1-inch NPT pipe hanger. Suspend the unit by connecting
the pipe hanger to a 1-inch threaded pipe. See Figure 3 for the standard and alternative suspension methods. The
factory-installed pipe hanger may be removed and the heater may be suspended as shown in the right view of Figure 3.
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