Reznor SCE Unit Installation Manual - Manual (Page 4)

Form RZ-NA I-SCE, Page 4
4. Uncrating (cont'd)
For best results, the heater should be placed with certain rules in mind. In general, a unit should
be located from 8 to 12 ft (2.6 to 3.6M) 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).
CAUTION: Do not locate the heater where it may be exposed to water
spray, rain, or dripping water.
Location
Vent Terminal/Combustion Air Inlet
Kit with Concentric Adapter Box -
Required for All Installations
To protect the unit during shipping, blower models have special supports that must be
removed before installation. Follow these instructions to remove:
Blower Support Legs - Remove the blower support legs and screws.
Motor Shipping Block - Remove the wooden block located under the motor bracket. Find
the two rubber pads shipped in the instruction envelope. Place these pads on the ends
of the motor bracket bolts.
Motor Shipping Plate - Units that are equipped with motors of
1-1/2 HP or less have a metal shipping plate attached between the motor and the blower
housing. The shipping plate must be removed and the plate and screws discarded. On
units factory equipped with an optional belt guard, the belt guard must be removed to
reach the shipping plate.
The concentric adapter assembly in the venting/combustion air kit (Option
CC2 or CC6) is required on all separated combustion models. Be sure that the
concentric adapter carton is at the installation site. (See parts lists in Para-
graph 9.)
Options
Some gas control options have parts either shipped loose
with the heater or shipped separately. If your unit is
equipped with any of the gas control options in the table,
be sure these parts are available at the job site.
Before beginning installation, be sure that all other
shipped-separate options ordered are available at the
site, also. Shipped-separate options could include a
shutoff valve, a condensate drain kit, a thermostat, a
remote console, a disconnect switch, or high tempera-
ture vent sealing tape.
Control Side Side Opposite Controls To Combustibles To Non-Combustibles
6"
(152mm)
Bottom Sides
Top
6" (152mm) plus
width of unit
6" (152mm) 6" (152mm) 0" (0mm)
5. Clearances
and Location
For safety and convenience, provide clearances as shown in the following table. 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 above the surrounding ambient tempera-
ture is not exceeded. Minimum clearances are also listed on the heater rating plate.
Minimum
Clearances
- inches (mm)
Application Option Shipped Separate Components
Heating -- Gas
Control Option AG7 Thermostat, P/N 48033
AG3 Control Switch, P/N 29054
Remote Temperature Selector, P/N 48042
Control Switch, P/N 29054
Remote Temperature Selector, P/N 115848
Stage Adder Module, P/N 115849
Control Switch, P/N 29054
Remote Temperature Selector, P/N 115848
Stage Adder Module, P/N 115849
Remote Display Module, P/N 115852
Control Switch, P/N 29054
AG39 Remote Temperature Selector, P/N 174849
Makeup Air -- Gas
Control Options
AG9
AG15
AG16