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Engineering Guide-THB
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Section 1 - Receipt & Initial Installation
HANDLING & INSTALLATION
While all equipment is designed for durability and fabricated for sturdy
construction and may present a rugged appearance, great care must be
taken to assure that no force or pressure be applied to the coil, piping
or drain stub-outs during handling. Also, depending on the options and
accessories, some units could contain delicate components that may be
damaged by improper handling. Wherever possible, all units should be
maintained in an upright position and handled by the chassis as close as
possible to the mounting point locations.
In the case of a full cabinet unit, the unit must obviously be handled
by the exterior casing. This is acceptable providing the unit is again
maintained in an upright position and no impact forces are applied that
may damage internal components, access panels, or painted surfaces.
The equipment covered in this manual IS NOT suitable for outdoor
installations or hazardous/explosive environments. The equipment should
never be stored or installed where it may be subjected to a hostile environment
such as rain, snow, extreme temperatures or corrosive or chemical
laden atmospheres.
During and after installation, special care must be taken to prevent foreign
material such as paint, plaster, and drywall dust from being deposited in
the drain pan or on the motor or blower wheels. Failure to do so may have
serious adverse effects on unit operation and in the case of the motor
and blower assembly, may result in immediate or premature failure.
All manufacturers’ warranties are void if foreign material is allowed
to be deposited on the motor or blower wheels of any unit. Some units
and/or job conditions may require some form of temporary covering
during construction.
While the manufacturer does not become involved in the design and
selection of support methods and components, it should be noted that
unacceptable system operating characteristics and/or performance might
result from improper or inadequate unit structural support. In addition,
adequate clearance must be provided for service and removal of the
equipment and its accessory components. Anchoring the equipment
in place is accomplished by using the mounting points provided and
positioning the unit to maintain the unit on a LEVEL plane. All units are
supplied with hanging holes for use with all thread rods.
DRAIN PAN
The optional sloped, insulated drain pan can be equipped with a secondary
drain connection. Standard drain pans are externally insulated, single wall
galvanized steel. The drain pan is easily removable for cleaning. The pan
can be turned around 180 degrees for drainage on the opposite side of
the valve package(s) while capturing condensate from both the coil and
the valve package(s). The optional auxiliary drip pan to catch condensed
moisture from valves and piping is easily attachable to the drain pan. The
drain pan is equipped with external slots and is to be sloped toward the
outlet connection prior to start-up. Care must be taken to insure that the
unit drain pan does not slope away from the outlet connection.
The drain should always be connected and piped to an acceptable disposal
point. For proper moisture carry-off, the drain piping should be sloped
away from the unit at least 1/8” per foot. A drain trap may be required
by local codes and it is strongly recommended for odor containment.
