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AIR11-500.6
6
CONTROLS AND FEATURES / MECHANICAL SPECIFICATIONS
Figure 6.1
Controls and Features
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➁
➉
➃
➇
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Unit Mechanical Specifications
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One-Piece Cabinet Top and Sides (STD)
Cabinet top and sides are formed from a single sheet of 18
gauge steel reducing the number of parting lines common to
multi-piece construction. Fronts are 16 gauge. All louvers are
stamped as standard.
➁
Wrap-Around Partitions and Back Sheet (STD)
Inner partition panels and back sheet are die-formed from a
single sheet of 18 gauge steel. This assures precision fit and
alignment of all internal components and maximum cabinet
rigidity.
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All-Welded Construction (STD)
Cabinet unit heaters utilize five to eight structural
components in the basic cabinet. The components are
fixture-aligned and welded.
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Cabinet End Pockets (STD)
The two cabinet end pockets provide ample space for
convenient installation of piping and electrical wiring. Easy
access reduces costs and installation time.
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Cabinet Finish (STD)
After assembly and welding operations are completed,
the entire cabinet unit is treated for prevention of rust and
corrosion. Entire cabinet is finished with a tan color, durable
polyester powder-coat paint.
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Quick-Change Permanent Filters (STD)
Filters are removable without tools. After opening the unit’s
front panel, the filter easily slides out. Cleanable filters are
provided as standard.
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Insulation (STD)
Sound dampening insulation on all front panels.
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Coils – Steam/Hot Water (STD)
All coils used in cabinet heaters use copper tube, aluminum
fin construction with NPT connections; 3/4" for sizes 2 thru 6,
and 1" for sizes 8 thru 14. Tubes are mechanically expanded
into integral fin collars. Return bends and joints are silver
alloy brazed and the coil is pressure-tested to 200 psig
pressure. Field reversible coils allow piping to be made for
left or right side connection, with left hand piping as factory
standard.
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Power Assembly (STD)
Blower platform, blower, and blower motor on all sizes are
removable as a single unit. A direct drive, multi-speed,
shaded pole motor with built in thermal overload protection
powers the forward curved aluminum blower wheels. Right
hand electrical as factory standard.
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Speed Control (STD)
Solid state infinite speed control with off position.
Access Doors (not shown) (STD)
Tilt type access doors standard on model FC units.
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Cabinet
Floor models shall be provided with stamped louvers and a one
inch high dust barrier at the bottom. The cabinet shall be 18-gauge
steel with 16 gauge front panels. All painted surfaces shall be
treated for corrosion resistance prior to being finished with a tan,
baked on enamel finish, which may be used as a final coat or
repainted. All unpainted steel shall be galvanized. (When specified)
color as selected by architect shall be provided in one of 9 optional
colors as shown on manufacturer’s color chart 75-403.
Wall or ceiling models shall have cabinets with stamped louvers.
The entire bottom of the unit must be enclosed. Access to the speed
control shall be through the easy access 16-gauge front panels.
(Available, when specified, as optional equipment) an access
door shall be provided for speed control access.
All models shall have two 9" minimum wide piping end pockets.
All wall and ceiling units shall have safety hinged access panels
that can be easily removed during installation.
Coils
The heating coils shall provide specified capacities and not
exceed the pressure drop and GPM listed in this catalog. 1 & 2
row coils shall be suitable for 200 PSIG working pressure with
240°F water. 3 & 4 row coils shall be suitable for 200 PSIG
working pressure with 200°F water.
Steam pressure shall not exceed 10 psig on 1 row coils.
Motor Speed Control
The unit shall have a unit-mounted solid state motor speed control,
with high through low speeds and off positions on all models.